/****************************************************************************
** $Id$
**
** Implementation of QListView widget class
**
** Created : 970809
**
** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
**
** This file is part of the widgets module of the Qt GUI Toolkit.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Trolltech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
** licenses may use this file in accordance with the Qt Commercial License
** Agreement provided with the Software.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
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**   information about Qt Commercial License Agreements.
** See http://www.trolltech.com/qpl/ for QPL licensing information.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
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**********************************************************************/

#include "qlistview.h"
#ifndef QT_NO_LISTVIEW
#include "qtimer.h"
#include "qheader.h"
#include "qpainter.h"
#include "qcursor.h"
#include "qptrstack.h"
#include "qptrlist.h"
#include "qstrlist.h"
#include "qapplication.h"
#include "qbitmap.h"
#include "qdatetime.h"
#include "qptrdict.h"
#include "qptrvector.h"
#include "qiconset.h"
#include "qcleanuphandler.h"
#include "qpixmapcache.h"
#include "qtl.h"
#include "qdragobject.h"
#include "qlineedit.h"
#include "qvbox.h"
#include "qtooltip.h"
#include "qstyle.h"
#include "../kernel/qinternal_p.h"

const int Unsorted = 16383;

static QCleanupHandler<QBitmap> qlv_cleanup_bitmap;
struct QListViewPrivate
{
    // classes that are here to avoid polluting the global name space

    // the magical hidden mother of all items
    class Root: public QListViewItem {
    public:
	Root( QListView * parent );

	void setHeight( int );
	void invalidateHeight();
	void setup();
	QListView * theListView() const;

	QListView * lv;
    };

    // for the stack used in drawContentsOffset()
    class Pending {
    public:
	Pending( int level, int ypos, QListViewItem * item)
	    : l(level), y(ypos), i(item) {};

	int l; // level of this item; root is -1 or 0
	int y; // level of this item in the tree
	QListViewItem * i; // the item itself
    };

    // to remember what's on screen
    class DrawableItem {
    public:
	DrawableItem( Pending * pi ) { y = pi->y; l = pi->l; i = pi->i; };
	int y;
	int l;
	QListViewItem * i;
    };

    // for sorting
    class SortableItem {
    public:
	/*
	  We could be smarter and keep a pointer to the QListView
	  item instead of numCols, col and asc. This would then allow
	  us to use the physical ordering of columns rather than the
	  logical. Microsoft uses the logical ordering, so there is
	  some virtue in doing so, although it prevents the user from
	  chosing the secondary key.
	*/
	QListViewItem * item;
	int numCols;
	int col;
	bool asc;

	int cmp( const SortableItem& i ) const {
	    int diff = item->compare( i.item, col, asc );
	    if ( diff == 0 && numCols != 1 ) {
		for ( int j = 0; j < numCols; j++ ) {
		    if ( j != col ) {
			diff = item->compare( i.item, j, asc );
			if ( diff != 0 )
			    break;
		    }
		}
	    }
	    return diff;
	}
	bool operator<( const SortableItem& i ) const { return cmp( i ) < 0; }
	bool operator<=( const SortableItem& i ) const { return cmp( i ) <= 0; }
	bool operator>( const SortableItem& i ) const { return cmp( i ) > 0; }
    };

    class ItemColumnInfo {
    public:
	ItemColumnInfo(): pm( 0 ), next( 0 ), truncated( FALSE ), dirty( FALSE ), allow_rename( FALSE ), width( 0 ) {}
	~ItemColumnInfo() { delete pm; delete next; }
	QString text, tmpText;
	QPixmap * pm;
	ItemColumnInfo * next;
	uint truncated : 1;
	uint dirty : 1;
	uint allow_rename : 1;
	int width;
    };

    class ViewColumnInfo {
    public:
	ViewColumnInfo(): align(Qt::AlignAuto), sortable(TRUE), next( 0 ) {}
	~ViewColumnInfo() { delete next; }
	int align;
	bool sortable;
	ViewColumnInfo * next;
    };

    // private variables used in QListView
    ViewColumnInfo * vci;
    QHeader * h;
    Root * r;
    uint rootIsExpandable : 1;
    int margin;

    QListViewItem * focusItem, *highlighted, *oldFocusItem;

    QTimer * timer;
    QTimer * dirtyItemTimer;
    QTimer * visibleTimer;
    int levelWidth;

    // the list of drawables, and the range drawables covers entirely
    // (it may also include a few items above topPixel)
    QPtrList<DrawableItem> * drawables;
    int topPixel;
    int bottomPixel;

    QPtrDict<void> * dirtyItems;

    QListView::SelectionMode selectionMode;

    // Per-column structure for information not in the QHeader
    struct Column {
	QListView::WidthMode wmode;
    };
    QPtrVector<Column> column;

    // suggested height for the items
    int fontMetricsHeight;
    int minLeftBearing, minRightBearing;
    int ellipsisWidth;

    // currently typed prefix for the keyboard interface, and the time
    // of the last key-press
    QString currentPrefix;
    QTime currentPrefixTime;

    // holds a list of iterators
    QPtrList<QListViewItemIterator> *iterators;
    QListViewItem *pressedItem, *selectAnchor;

    QTimer *scrollTimer;
    QTimer *renameTimer;

    // sort column and order   #### may need to move to QHeader [subclass]
    int sortcolumn;
    bool ascending		:1;
    bool sortIndicator		:1;
    // whether to select or deselect during this mouse press.
    bool allColumnsShowFocus	:1;
    bool select			:1;

    // TRUE if the widget should take notice of mouseReleaseEvent
    bool buttonDown		:1;
    // TRUE if the widget should ignore a double-click
    bool ignoreDoubleClick	:1;

    bool clearing		:1;
    bool pressedSelected	:1;
    bool pressedEmptyArea 	:1;

    bool useDoubleBuffer	:1;
    bool toolTips		:1;
    bool fullRepaintOnComlumnChange:1;
    bool updateHeader		:1;

    bool was_visible : 1;

    bool startEdit : 1;

    QListView::RenameAction defRenameAction;

    QSize sizeHint;
    QListViewItem *startDragItem;
    QPoint dragStartPos;
    QListViewToolTip *toolTip;
    int pressedColumn;
    QListView::ResizeMode resizeMode;

};

#ifndef QT_NO_TOOLTIP
class QListViewToolTip : public QToolTip
{
public:
    QListViewToolTip( QWidget *parent, QListView *lv );

    void maybeTip( const QPoint &pos );

private:
    QListView *view;

};

QListViewToolTip::QListViewToolTip( QWidget *parent, QListView *lv )
    : QToolTip( parent ), view( lv )
{
}

void QListViewToolTip::maybeTip( const QPoint &pos )
{
    if ( !parentWidget() || !view || !view->showToolTips() )
	return;

    QListViewItem *item = view->itemAt( pos );
    if ( !item || !item->columns )
	return;
    int col = view->header()->sectionAt( pos.x() );
    QListViewPrivate::ItemColumnInfo *ci = (QListViewPrivate::ItemColumnInfo*)item->columns;
    for ( int i = 0; ci && ( i < col ); ++i )
	ci = ci->next;

    if ( !ci || !ci->truncated )
	return;

    QRect r = view->itemRect( item );
    r.setLeft( view->header()->sectionPos( col ) );
    tip( r, item->text( col ) );
}
#endif

// these should probably be in QListViewPrivate, for future thread safety
static bool activatedByClick;
static QPoint activatedP;


/*!
  \class QListViewItem
  \ingroup advanced
  \brief The QListViewItem class implements a list view item.

  A list view item is a multi-column object capable of displaying
  itself in a QListView.  Its design has the following main goals:
  \list
  \i Work quickly and well for \e large sets of data.
  \i Be easy to use in the simple case.
  \endlist

  The easiest way to use QListViewItem is to construct one with a few
  constant strings.  This creates an item that is a child of \e
  parent with two fixed-content strings, and discards the pointer to
  it:

  \code
    (void) new QListViewItem( parent, "first column", "second column" );
  \endcode

  This object will be deleted when \e parent is deleted, as for
  \l {QObject}s.

  The parent is either another QListViewItem or a QListView.  If the
  parent is a QListView, this item is a top-level item within that
  QListView.  If the parent is another QListViewItem, this item
  becomes a child of that list view item.

  If you keep the pointer, you can set or change the texts using
  setText(), add pixmaps using setPixmap(), change its mode using
  setSelectable(), setSelected(), setOpen() and setExpandable().
  You'll also be able to change its height using setHeight(), and
  traverse the tree. There's no need to retain the pointer however,
  since you can get a pointer to any QListViewItem in a QListView
  using QListView::selectedItem(), QListView::currentItem(),
  QListView::firstChild(), QListView::lastItem(),
  QListView::findItem().

  \l{QCheckListItem}s are list view items that have a checkbox or
  radio button and can be used in place of QListViewItems.

  You can traverse the tree as if it were a doubly-linked list using
  itemAbove() and itemBelow(); they return pointers to the items
  directly above and below this item on the screen (even if none of
  the three are actually visible at the moment).

  You can also traverse it as a tree by using parent(), firstChild(), and
  nextSibling().

    Example:
  \code
    QListViewItem * myChild = myItem->firstChild();
    while( myChild ) {
	doSomething( myChild );
	myChild = myChild->nextSibling();
    }
  \endcode

  There is also an interator class to traverse a tree of list view items.
  To iterate over all items of a list view, do the following:

  \code
    QListViewItemIterator it( listview );
    for ( ; it.current(); ++it )
      doSomething( it.current() ); // it.current() is a QListViewItem*
  \endcode

  Note that the order of the children will change when the sorting
  order changes and is undefined if the items are not visible.  You
  can, however, call enforceSortOrder() at any time; QListView will
  always call it before it needs to show an item.

  Many programs will need to reimplement QListViewItem.  The most
  commonly reimplemented functions are:
  \list
  \i text() returns the text in a column.  Many subclasses will
  compute that on the fly.
  \i key() is used for sorting.  The default key() simply calls
  text(), but judicious use of key can be used to sort by date, for
  example (as QFileDialog does).
  \i setup() is called before showing the item and whenever the font
  changes, for example.
  \i activate() is called whenever the user clicks on the item or
  presses space when the item is the currently highlighted item.
  \endlist

  Some subclasses call setExpandable(TRUE) even when they have no
  children, and populate themselves when setup() or setOpen(TRUE) is
  called.  The dirview/dirview.cpp example program uses this
  technique to start up quickly: The files and subdirectories in a
  directory aren't inserted into the tree until they're actually needed.

  \img qlistviewitems.png List View Items

  \sa QCheckListItem QListView
*/

/*!
    \fn int QCheckListItem::rtti() const

    Returns 1.

  Make your derived classes return their own values for rtti(), and
  you can distinguish between listview items. You should use values
  greater than 1000 preferably a large random number, to allow for
  extensions to this class.

*/

/*!
  Constructs a new top-level list view item in the QListView \a parent.
*/

QListViewItem::QListViewItem( QListView * parent )
{
    init();
    parent->insertItem( this );
}


/*!  Constructs a new list view item that is a child of \a parent and first
  in the parent's list of children. */

QListViewItem::QListViewItem( QListViewItem * parent )
{
    init();
    parent->insertItem( this );
}




/*!  Constructs an empty list view item that is a child of \a parent
  and is after \a after in the parent's list of children. Since \a
  parent is a QListView the item will be a top-level item.
*/

QListViewItem::QListViewItem( QListView * parent, QListViewItem * after )
{
    init();
    parent->insertItem( this );
    moveToJustAfter( after );
}


/*!  Constructs an empty list view item that is a child of \a parent
  and is after \a after in the parent's list of children. */

QListViewItem::QListViewItem( QListViewItem * parent, QListViewItem * after )
{
    init();
    parent->insertItem( this );
    moveToJustAfter( after );
}



/*! Constructs a new list view item in the QListView \a parent,
  \a parent, with up to eight constant strings \a label1, \a label2,
  \a label3, \a label4, \a label5, \a label6, \a label7 and
  \a label8 defining its column contents.

  \sa setText()
*/

QListViewItem::QListViewItem( QListView * parent,
			      QString label1,
			      QString label2,
			      QString label3,
			      QString label4,
			      QString label5,
			      QString label6,
			      QString label7,
			      QString label8 )
{
    init();
    parent->insertItem( this );

    setText( 0, label1 );
    setText( 1, label2 );
    setText( 2, label3 );
    setText( 3, label4 );
    setText( 4, label5 );
    setText( 5, label6 );
    setText( 6, label7 );
    setText( 7, label8 );
}


/*!  Constructs a new list view item as a child of the QListViewItem
  \a parent with optional constant strings \a label1, \a label2, \a
  label3, \a label4, \a label5, \a label6, \a label7 and \a label8 as
  column contents.

  \sa setText()
*/

QListViewItem::QListViewItem( QListViewItem * parent,
			      QString label1,
			      QString label2,
			      QString label3,
			      QString label4,
			      QString label5,
			      QString label6,
			      QString label7,
			      QString label8 )
{
    init();
    parent->insertItem( this );

    setText( 0, label1 );
    setText( 1, label2 );
    setText( 2, label3 );
    setText( 3, label4 );
    setText( 4, label5 );
    setText( 5, label6 );
    setText( 6, label7 );
    setText( 7, label8 );
}

/*!  Constructs a new list view item in the QListView \a parent
  that is included after item \a after and can contain up to
  eight column texts \a label1, \a label2, \a label3, \a label4, \a
  label5, \a label6, \a label7 and\a label8.

  Note that the order is changed according to QListViewItem::key()
  unless the list view's sorting is disabled using
  QListView::setSorting( -1 ).

  \sa setText()
*/

QListViewItem::QListViewItem( QListView * parent, QListViewItem * after,
			      QString label1,
			      QString label2,
			      QString label3,
			      QString label4,
			      QString label5,
			      QString label6,
			      QString label7,
			      QString label8 )
{
    init();
    parent->insertItem( this );
    moveToJustAfter( after );

    setText( 0, label1 );
    setText( 1, label2 );
    setText( 2, label3 );
    setText( 3, label4 );
    setText( 4, label5 );
    setText( 5, label6 );
    setText( 6, label7 );
    setText( 7, label8 );
}


/*!  Constructs a new list view item as a child of the QListViewItem
  \a parent. It is inserted after item \a after and
  may contain up to eight strings \a label1, \a label2, \a label3, \a
  label4, \a label5, \a label6, \a label7 and \a label8 as column
  entries.

  Note that the order is changed according to QListViewItem::key()
  unless the list view's sorting is disabled using
  QListView::setSorting( -1 ).

  \sa setText()
*/

QListViewItem::QListViewItem( QListViewItem * parent, QListViewItem * after,
			      QString label1,
			      QString label2,
			      QString label3,
			      QString label4,
			      QString label5,
			      QString label6,
			      QString label7,
			      QString label8 )
{
    init();
    parent->insertItem( this );
    moveToJustAfter( after );

    setText( 0, label1 );
    setText( 1, label2 );
    setText( 2, label3 );
    setText( 3, label4 );
    setText( 4, label5 );
    setText( 5, label6 );
    setText( 6, label7 );
    setText( 7, label8 );
}

/*!
  (Re)sorts all child items of this item using the last sorting
  configuration (sort column and direction).

  \sa enforceSortOrder()
*/

void QListViewItem::sort()
{
    if ( !listView() )
	 return;
    lsc = Unsorted;
    enforceSortOrder();
    listView()->triggerUpdate();
}

int QListViewItem::RTTI = 0;

/*! Returns 0.

  Make your derived classes return their own values for rtti(), and
  you can distinguish between listview items. You should use values
  greater than 1000 preferably a large random number, to allow for
  extensions to this class.
*/

int QListViewItem::rtti() const
{
    return RTTI;
}

/*!  Performs the initializations that's common to the constructors. */

void QListViewItem::init()
{
    ownHeight = 0;
    maybeTotalHeight = -1;
    open = FALSE;

    nChildren = 0;
    parentItem = 0;
    siblingItem = childItem = 0;

    columns = 0;

    selected = 0;

    lsc = Unsorted;
    lso = TRUE; // unsorted in ascending order :)
    configured = FALSE;
    expandable = FALSE;
    selectable = TRUE;
    is_root = FALSE;
    allow_drag = FALSE;
    allow_drop = FALSE;
    visible = TRUE;
    renameBox = 0;
    enabled = TRUE;
    mlenabled = FALSE;
}

/*! If \a b is TRUE, the item is made visible; otherwise it is hidden.

   If the item is not visible, itemAbove() and itemBelow() will never
   hit this item, although you still can reach it by using e.g. the
   QListViewItemIterator.
*/

void QListViewItem::setVisible( bool b )
{
    if ( b == (bool)visible )
	return;
    QListView *lv = listView();
    if ( !lv )
	return;
    visible = b;
    configured = FALSE;
    setHeight( 0 );
    invalidateHeight();
    if ( parent() )
	parent()->invalidateHeight();
    else
	lv->d->r->invalidateHeight();
    for ( QListViewItem *i = childItem; i; i = i->siblingItem )
	i->setVisible( b );
    if ( lv )
	lv->triggerUpdate();
}

/*! Returns TRUE if the item is visible; otherwise returns FALSE.

  \sa setVisible()
*/

bool QListViewItem::isVisible() const
{
    return (bool)visible;
}

/*! If \a b is TRUE, this item can be in-place renamed in the column
  \a col by the user, otherwise it is not possible. */

void QListViewItem::setRenameEnabled( int col, bool b )
{
    QListViewPrivate::ItemColumnInfo * l = (QListViewPrivate::ItemColumnInfo*)columns;
    if ( !l ) {
	l = new QListViewPrivate::ItemColumnInfo;
	columns = (void*)l;
    }
    for( int c = 0; c < col; c++ ) {
	if ( !l->next )
	    l->next = new QListViewPrivate::ItemColumnInfo;
	l = l->next;
    }

    if ( !l )
	return;
    l->allow_rename = b;
}

/*! Returns TRUE if this item can be in-place renamed in
  column \a col; otherwise returns FALSE. */

bool QListViewItem::renameEnabled( int col ) const
{
    QListViewPrivate::ItemColumnInfo * l = (QListViewPrivate::ItemColumnInfo*)columns;
    if ( !l )
	return FALSE;

    while( col && l ) {
	l = l->next;
	col--;
    }

    if ( !l )
	return FALSE;
    return (bool)l->allow_rename;
}

/*!
    If \a b is TRUE the item is enabled; otherwise it is disabled.
    Disabled items are drawn grayed-out and are not accessable by the user.
*/

void QListViewItem::setEnabled( bool b )
{
    if ( (bool)enabled == b )
	return;
    enabled = b;
    if ( !enabled )
	selected = FALSE;
    QListView *lv = listView();
    if ( lv )
	lv->triggerUpdate();
}

/*! Returns TRUE if this item is enabled; otherwise returns FALSE.

  \sa setEnabled()
*/

bool QListViewItem::isEnabled() const
{
    return (bool)enabled;
}

/*!  If in-place renaming of this item is enabled (see
  renameEnabled()), this function starts renaming the item in cloumn \a col,
  by creating and initializing an edit box.
*/

void QListViewItem::startRename( int col )
{
    if ( !renameEnabled( col ) )
	return;
    if ( renameBox )
	cancelRename( col );
    QListView *lv = listView();
    if ( !lv )
	return;

    if ( lv->d->renameTimer )
	lv->d->renameTimer->stop();

    if ( lv->d->timer->isActive() ) {
	// make sure that pending calculations get finished
	lv->d->timer->stop();
	lv->updateContents();
    }

    if ( lv->currentItem() && lv->currentItem()->renameBox ) {
	if ( lv->d->defRenameAction == QListView::Reject )
	    lv->currentItem()->cancelRename( lv->currentItem()->renameCol );
	else
	    lv->currentItem()->okRename( lv->currentItem()->renameCol );
    }

    if ( this != lv->currentItem() )
	lv->setCurrentItem( this );

    QRect r = lv->itemRect( this );
    r = QRect( lv->viewportToContents( r.topLeft() ), r.size() );
    r.setLeft( lv->header()->sectionPos( col ) );
    r.setWidth( lv->header()->sectionSize( col ) - 1 );
    if ( col == 0 )
	r.setLeft( r.left() + lv->itemMargin() + ( depth() + ( lv->rootIsDecorated() ? 1 : 0 ) ) * lv->treeStepSize() - 1 );
    if ( pixmap( col ) )
	r.setLeft( r.left() + pixmap( col )->width() );
    if ( r.x() - lv->contentsX() < 0 )
	r.setX( lv->contentsX() );
    if ( r.width() > lv->visibleWidth() )
	r.setWidth( lv->visibleWidth() );
    renameBox = new QLineEdit( lv->viewport(), "qt_renamebox" );
    renameBox->setFrameStyle( QFrame::Box | QFrame::Plain );
    renameBox->setLineWidth( 1 );
    renameBox->setText( text( col ) );
    renameBox->selectAll();
    renameBox->installEventFilter( lv );
    lv->addChild( renameBox, r.x(), r.y() );
    renameBox->resize( r.size() );
    lv->viewport()->setFocusProxy( renameBox );
    renameBox->setFocus();
    renameBox->show();
    renameCol = col;
}

/*! This function is called if the user presses Enter during in-place
    renaming of the item in column \a col.

    \sa cancelRename()
*/

void QListViewItem::okRename( int col )
{
    QListView *lv = listView();
    if ( !lv || !renameBox )
	return;
    setText( col, renameBox->text() );
    cancelRename( col );
    emit lv->itemRenamed( this, col );
    emit lv->itemRenamed( this, col, text( col ) );
}

/*! This function is called if the user cancels in-place renaming
  of this item in column \a col.

    \sa okRename()
*/

void QListViewItem::cancelRename( int )
{
    QListView *lv = listView();
    if ( !lv || !renameBox )
	return;
    bool resetFocus = lv->viewport()->focusProxy() == renameBox;
    delete renameBox;
    renameBox = 0;
    if ( resetFocus ) {
	lv->viewport()->setFocusProxy( lv );
	lv->setFocus();
    }
}

/*!  Destroys the item, deleting all its children and freeing up all
  allocated resources.
*/

QListViewItem::~QListViewItem()
{
    QListView *lv = listView();

    if ( lv ) {
	if ( lv->d->oldFocusItem == this )
	    lv->d->oldFocusItem = 0;
	if ( lv->d->iterators ) {
	    QListViewItemIterator *i = lv->d->iterators->first();
	    while ( i ) {
		if ( i->current() == this )
		    i->currentRemoved();
		i = lv->d->iterators->next();
	    }
	}
    }

    if ( parentItem )
	parentItem->takeItem( this );
    QListViewItem * i = childItem;
    childItem = 0;
    while ( i ) {
	i->parentItem = 0;
	QListViewItem * n = i->siblingItem;
	delete i;
	i = n;
    }
    delete (QListViewPrivate::ItemColumnInfo *)columns;
}


/*!
  If \a b is TRUE items may contain multiple lines of text; otherwise
  they may only contain a single line.
*/

void QListViewItem::setMultiLinesEnabled( bool b )
{
    mlenabled = b;
}

/*!
    Returns TRUE if the item can display multiple lines of text; otherwise
    returns FALSE.
*/

bool QListViewItem::multiLinesEnabled() const
{
    return mlenabled;
}

/*!
    If \a allow is TRUE, the listview starts a drag (see
    QListView::dragObject()) when the user presses and moves the mouse
    on this item.
*/


void QListViewItem::setDragEnabled( bool allow )
{
    allow_drag = (uint)allow;
}

/*! If \a allow is TRUE, the listview accepts drops onto the item;
    otherwise drops are not allowed..
*/

void QListViewItem::setDropEnabled( bool allow )
{
    allow_drop = (uint)allow;
}

/*! Returns TRUE if this item can be dragged; otherwise returns FALSE.

  \sa setDragEnabled()
*/

bool QListViewItem::dragEnabled() const
{
    return (bool)allow_drag;
}

/*! Returns TRUE if this item accepts drops; otherwise returns FALSE.

  \sa setDropEnabled(), acceptDrop()
*/

bool QListViewItem::dropEnabled() const
{
    return (bool)allow_drop;
}

/*!  Returns TRUE if the item can accept drops of type QMimeSource \a mime;
    otherwise returns FALSE.

  The default implementation does nothing and returns FALSE. A
  subclass must reimplement this to accept drops.
*/

bool QListViewItem::acceptDrop( const QMimeSource * ) const
{
    return FALSE;
}

#ifndef QT_NO_DRAGANDDROP

/*!  This method is called when something was dropped on the item.
  \a e contains all the information about the drop.

  The default implementation does nothing, subclasses may need to
  reimplement this method.
*/

void QListViewItem::dropped( QDropEvent *e )
{
    Q_UNUSED( e );
}

#endif

/*!  This method is called when a drag entered the item's bounding
  rectangle.

  The default implementation does nothing, subclasses may need to
  reimplement this method.
*/

void QListViewItem::dragEntered()
{
}

/*!  This method is called when a drag left the item's bounding
    rectangle.

  The default implementation does nothing, subclasses may need to
  reimplement this method.
*/

void QListViewItem::dragLeft()
{
}

/*!
    Inserts \a newChild into this list view item's list of children.
    You should not need to call this function; it is called
    automatically by the constructor of \a newChild.
*/

void QListViewItem::insertItem( QListViewItem * newChild )
{
    QListView *lv = listView();
    if ( lv && lv->currentItem() && lv->currentItem()->renameBox ) {
	if ( lv->d->defRenameAction == QListView::Reject )
	    lv->currentItem()->cancelRename( lv->currentItem()->renameCol );
	else
	    lv->currentItem()->okRename( lv->currentItem()->renameCol );
    }

    if ( !newChild || newChild->parentItem == this )
	return;
    if ( newChild->parentItem )
	newChild->parentItem->takeItem( newChild );
    if ( open )
	invalidateHeight();
    newChild->siblingItem = childItem;
    childItem = newChild;
    nChildren++;
    newChild->parentItem = this;
    lsc = Unsorted;
    newChild->ownHeight = 0;
    newChild->configured = FALSE;
    if ( !lv )
	return;

    if ( lv && !lv->d->focusItem ) {
	lv->d->focusItem = lv->firstChild();
	lv->repaintItem( lv->d->focusItem );
    }
}


/*!
  \fn void QListViewItem::removeItem( QListViewItem * )
  \obsolete

  This function has been renamed takeItem().
*/


/*!
  Removes \a item from this object's list of children and causes an update
  of the screen display.  The item is not deleted.  You should normally not
  need to call this function because QListViewItem::~QListViewItem() calls it.

  The normal way to delete an item is \c delete.

  If you need to move an item from one place in the hierarchy to
  another you can use takeItem() to remove the item from the list view
  and then insertItem() to put the item back in its new position.

  \warning This function leaves \a item and its children in a state
  where most member functions are unsafe. Only a few functions work
  correctly on an item in this state, most notably insertItem(). The
  functions that work on detached items are explicitly documented as
  such.

  \sa QListViewItem::insertItem()
*/

void QListViewItem::takeItem( QListViewItem * item )
{
    if ( !item )
	return;

    QListView *lv = listView();
    if ( lv && lv->currentItem() && lv->currentItem()->renameBox ) {
	if ( lv->d->defRenameAction == QListView::Reject )
	    lv->currentItem()->cancelRename( lv->currentItem()->renameCol );
	else
	    lv->currentItem()->okRename( lv->currentItem()->renameCol );
    }
    bool was_selected = FALSE;
    bool emit_changed = FALSE;
    QListViewItem *oldCurrent = 0;
    if ( lv && !lv->d->clearing ) {
	if ( lv->d->oldFocusItem == this )
	    lv->d->oldFocusItem = 0;

	if ( lv->d->iterators ) {
	    QListViewItemIterator *i = lv->d->iterators->first();
	    while ( i ) {
		if ( i->current() == item )
		    i->currentRemoved();
		i = lv->d->iterators->next();
	    }
	}

	invalidateHeight();

	if ( lv->d && lv->d->drawables ) {
	    delete lv->d->drawables;
	    lv->d->drawables = 0;
	}

	if ( lv->d->dirtyItems ) {
	    if ( item->childItem ) {
		delete lv->d->dirtyItems;
		lv->d->dirtyItems = 0;
		lv->d->dirtyItemTimer->stop();
		lv->triggerUpdate();
	    } else {
		lv->d->dirtyItems->take( (void *)item );
	    }
	}

	was_selected = item->isSelected();
	item->setSelected( FALSE );

#if 0
	// ##### do we really want that???
	if ( lv->selectedItem() ) {
	    QListViewItem * c = lv->selectedItem();
	    while( c && c != item )
		c = c->parentItem;
	    if ( c == item ) {
		emit lv->selectionChanged( 0 );
	    }
	}
#endif

	if ( lv->d->focusItem ) {
	    const QListViewItem * c = lv->d->focusItem;
	    while( c && c != item )
		c = c->parentItem;
	    if ( c == item ) {
		if ( item->nextSibling() )
		    lv->d->focusItem = item->nextSibling();
		else if ( item->itemAbove() )
		    lv->d->focusItem = item->itemAbove();
		else
		    lv->d->focusItem = 0;
		emit_changed = TRUE;
		oldCurrent = lv->d->focusItem;
	    }
	}

	if ( lv->d->selectAnchor == item )
	    lv->d->selectAnchor = lv->d->focusItem;
    }

    nChildren--;

    QListViewItem ** nextChild = &childItem;
    while( nextChild && *nextChild && item != *nextChild )
	nextChild = &((*nextChild)->siblingItem);

    if ( nextChild && item == *nextChild )
	*nextChild = (*nextChild)->siblingItem;
    item->parentItem = 0;
    item->siblingItem = 0;
    item->ownHeight = 0;
    item->maybeTotalHeight = -1;
    item->configured = FALSE;

    if ( emit_changed )
	emit lv->currentChanged( oldCurrent );
    if ( was_selected )
	emit lv->selectionChanged();
}


/*!
  \fn QString QListViewItem::key( int column, bool ascending ) const

  Returns a key that can be used for sorting by column \a column.
  The default implementation returns text().  Derived classes may
  also incorporate the order indicated by \a ascending into this
  key, although this is not recommended.

    If you want to sort on non-alphabetical data, e.g. dates, numbers,
    etc., reimplement compare().

  \sa compare(), sortChildItems()
*/

QString QListViewItem::key( int column, bool ) const
{
    return text( column );
}


/*!  Compares this listview item to \a i using the column \a col in \a
  ascending order. Returns -1 if this item is less than \a i, 0 if
  they are equal and 1 if this item is greater than \a i.

  This function is used for sorting.

  The default implementation compares the item keys (key()) using
  QString::localeAwareCompare(). A reimplementation may use different
  values and a different comparison function. Here is a
  reimplementation that uses plain Unicode comparison:

  \code
    int MyListViewItem::compare( QListViewItem *i, int col,
				 bool ascending ) const
    {
	return key( col, ascending ).compare( i->key(col, ascending) );
    }
  \endcode
  We don't recommend using \a ascending so your code can safely ignore it.

  \sa key() QString::localeAwareCompare() QString::compare()
*/

int QListViewItem::compare( QListViewItem *i, int col, bool ascending ) const
{
    return key( col, ascending ).localeAwareCompare( i->key( col, ascending ) );
}

/*!
    Sorts the children of this item using column \a column. This is
    done in ascending order if \a ascending is TRUE and in descending
    order if \a ascending is FALSE.

  Asks some of the children to sort their children.  (QListView and
  QListViewItem ensure that all on-screen objects are properly sorted
  but may avoid or defer sorting other objects in order to be more
  responsive.)

  \sa key() compare()
*/

void QListViewItem::sortChildItems( int column, bool ascending )
{
    // we try HARD not to sort.  if we're already sorted, don't.
    if ( column == (int)lsc && ascending == (bool)lso )
	return;

    if ( column < 0 )
	return;

    lsc = column;
    lso = ascending;

    // and don't sort if we already have the right sorting order
    if ( childItem == 0 || childItem->siblingItem == 0 )
	return;

    // make an array for qHeapSort
    QListViewPrivate::SortableItem * siblings
	= new QListViewPrivate::SortableItem[nChildren];
    QListViewItem * s = childItem;
    int nColumns = listView()->columns();
    int i = 0;
    while ( s && i < nChildren ) {
	siblings[i].numCols = nColumns;
	siblings[i].col = column;
	siblings[i].asc = ascending;
	siblings[i].item = s;
	s = s->siblingItem;
	i++;
    }

    // and sort it.
    qHeapSort( siblings, siblings + nChildren );

    // build the linked list of siblings, in the appropriate
    // direction, and finally set this->childItem to the new top
    // child.
    if ( ascending ) {
	for( i = 0; i < nChildren - 1; i++ )
	    siblings[i].item->siblingItem = siblings[i+1].item;
	siblings[nChildren-1].item->siblingItem = 0;
	childItem = siblings[0].item;
    } else {
	for( i = nChildren - 1; i > 0; i-- )
	    siblings[i].item->siblingItem = siblings[i-1].item;
	siblings[0].item->siblingItem = 0;
	childItem = siblings[nChildren-1].item;
    }

    delete[] siblings;
}


/*!  Sets this item's height to \a height pixels.  This implicitly
  changes totalHeight(), too.

  Note that a font change causes this height to be overwritten
  unless you reimplement setup().

  For best results in Windows style we suggest using an even number
  of pixels.

  \sa height() totalHeight() isOpen();
*/

void QListViewItem::setHeight( int height )
{
    if ( ownHeight != height ) {
	if ( visible )
	    ownHeight = height;
	else
	    ownHeight = 0;
	invalidateHeight();
    }
}


/*!  Invalidates the cached total height of this item, including
  all open children.

  \sa setHeight() height() totalHeight()
*/

void QListViewItem::invalidateHeight()
{
    if ( maybeTotalHeight < 0 )
	return;
    maybeTotalHeight = -1;
    if ( parentItem && parentItem->isOpen() )
	parentItem->invalidateHeight();
}


/*!  Opens or closes an item, i.e. shows or hides an item's children.

  If \a o is TRUE all child items are shown initially. The
  user can hide them by clicking the \e - icon to the left of
  the item.
  If \a o is FALSE, the children of this item are initially hidden.
  The user can show them by clicking the \e + icon to the left of the
  item.

  \sa height() totalHeight() isOpen()
*/

void QListViewItem::setOpen( bool o )
{
    if ( o == (bool)open || !enabled )
	return;
    open = o;

    QListView *lv = listView();
    if ( lv && this != lv->d->r ) {
	if ( o )
	    emit lv->expanded( this );
	else
	    emit lv->collapsed( this );
    }


    if ( !nChildren )
	return;
    invalidateHeight();

    if ( !configured ) {
	QListViewItem * l = this;
	QPtrStack<QListViewItem> s;
	while( l ) {
	    if ( l->open && l->childItem ) {
		s.push( l->childItem );
	    } else if ( l->childItem ) {
		// first invisible child is unconfigured
		QListViewItem * c = l->childItem;
		while( c ) {
		    c->configured = FALSE;
		    c = c->siblingItem;
		}
	    }
	    l->configured = TRUE;
	    l->setup();
	    l = (l == this) ? 0 : l->siblingItem;
	    if ( !l && !s.isEmpty() )
		l = s.pop();
	}
    }

    if ( !open )
	return;

    enforceSortOrder();
}


/*!  This virtual function is called before the first time QListView
  needs to know the height or any other graphical attribute of this
  object, and whenever the font, GUI style, or colors of the list view
  change.

  The default calls widthChanged() and sets the item's height to the
  height of a single line of text in the list view's font.  (If you
  use icons, multi-line text, etc., you will probably need to call
  setHeight() yourself or reimplement it.)
*/

void QListViewItem::setup()
{
    widthChanged();
    QListView * v = listView();

    int ph = 0;
    for ( uint i = 0; i < v->d->column.size(); ++i ) {
	if ( pixmap( i ) )
	    ph = QMAX( ph, pixmap( i )->height() );
    }
    int h;
    if ( mlenabled ) {
	h = ph;
	for ( int c = 0; c < v->columns(); ++c ) {
	    int tmph = v->fontMetrics().size( AlignVCenter, text( c ) ).height();
	    h = QMAX( h, tmph );
	}
	h += 2*v->itemMargin();
    } else {
	h = QMAX( v->d->fontMetricsHeight, ph ) + 2*v->itemMargin();
    }

    h = QMAX( h, QApplication::globalStrut().height());

    if ( h % 2 > 0 )
	h++;
    setHeight( h );
}




/*!
  This virtual function is called whenever the user clicks on this
  item or presses Space on it.

  \sa activatedPos()
*/

void QListViewItem::activate()
{
}



/*!
  When called from a reimplementation of activate(), this function
  gives information on how the item was activated. Otherwise the
  behavior is undefined.

  If activate() was caused by a mouse press, the function sets \a
  pos to where the user clicked and returns TRUE; otherwise it returns
  FALSE and does not change \a pos.

  \a pos is relative to the top-left corner of this item.

  We recommend not using this function; it is scheduled to become
  obsolete.

  \sa activate()
*/

bool QListViewItem::activatedPos( QPoint &pos )
{
    if ( activatedByClick )
	pos = activatedP;
    return activatedByClick;
}





/*! \fn bool QListViewItem::isSelectable() const

  Returns TRUE if the item is selectable (as it is by default);
  otherwise returns FALSE

  \sa setSelectable()
*/


/*!  Sets this items to be selectable if \a enable is TRUE (the
  default) or not to be selectable if \a enable is FALSE.

  The user is not able to select a non-selectable item using either
  the keyboard or mouse.  The application programmer still can, e.g.
  using setSelected().

  \sa isSelectable()
*/

void QListViewItem::setSelectable( bool enable )
{
    selectable = enable;
}


/*! \fn bool QListViewItem::isExpandable() const

  Returns TRUE if this item is expandable even when it has no
  children; otherwise returns FALSE.
*/

/*!  Sets this item to be expandable even if it has no children if \a
  enable is TRUE, and to be expandable only if it has children if \a
  enable is FALSE (the default).

  The dirview example uses this in the canonical fashion. It checks
  whether the directory is empty in setup() and calls
  setExpandable(TRUE) if not; in setOpen() it reads the contents
  of the directory and inserts items accordingly.  This strategy means
  that dirview can display the entire file system without reading very
  much at startup.

  Note that root items are not expandable by the user unless
  QListView::setRootIsDecorated() is set to TRUE.

  \sa setSelectable()
*/

void QListViewItem::setExpandable( bool enable )
{
    expandable = enable;
}


/*!  Makes sure that this object's children are sorted appropriately.

  This works only if every item from the root item down to
  this item is already sorted.

  \sa sortChildItems()
*/

void QListViewItem::enforceSortOrder() const
{
    QListView *lv = listView();
    if ( lv && lv->d->clearing )
	return;
    if( parentItem &&
	(parentItem->lsc != lsc || parentItem->lso != lso) &&
	(int)parentItem->lsc != Unsorted )
	((QListViewItem *)this)->sortChildItems( (int)parentItem->lsc,
						 (bool)parentItem->lso );
    else if ( !parentItem &&
	      ( (int)lsc != listView()->d->sortcolumn ||
		(bool)lso != listView()->d->ascending ) &&
	      listView()->d->sortcolumn != Unsorted )
	((QListViewItem *)this)->sortChildItems( listView()->d->sortcolumn,
						 listView()->d->ascending );
}


/*! \fn bool QListViewItem::isSelected() const

  Returns TRUE if this item is selected; otherwise returns FALSE.

  \sa setSelected() QListView::setSelected() QListView::selectionChanged()
*/


/*!
    If \a s is TRUE this item is selected; otherwise it is deselected.

  This function does not maintain any invariants or repaint anything --
  QListView::setSelected() does that.

  \sa height() totalHeight() */

void QListViewItem::setSelected( bool s )
{
    if ( listView() && listView()->selectionMode() != QListView::NoSelection) {
	if ( s && isSelectable() )
	    selected = TRUE;
	else
	    selected = FALSE;
    }
}

/*!  Returns the total height of this object, including any visible
  children.  This height is recomputed lazily and cached for as long
  as possible.

  Functions which can affect the total height are, setHeight() which is
  used to set an item's height, setOpen() to show or hide an item's
  children, and invalidateHeight() to invalidate the cached height.

  \sa height()
*/

int QListViewItem::totalHeight() const
{
    if ( !visible )
	return 0;
    if ( maybeTotalHeight >= 0 )
	return maybeTotalHeight;
    QListViewItem * that = (QListViewItem *)this;
    if ( !that->configured ) {
	that->configured = TRUE;
	that->setup(); // ### virtual non-const function called in const
    }
    that->maybeTotalHeight = that->ownHeight;

    if ( !that->isOpen() || !that->childCount() )
	return that->ownHeight;

    QListViewItem * child = that->childItem;
    while ( child != 0 ) {
	that->maybeTotalHeight += child->totalHeight();
	child = child->siblingItem;
    }
    return that->maybeTotalHeight;
}


/*!  Returns the text in column \a column, or a
  \link QString::operator!() null string \endlink if there
  is no text in that column.

  \sa key() paintCell()
*/

QString QListViewItem::text( int column ) const
{
    QListViewPrivate::ItemColumnInfo * l
	= (QListViewPrivate::ItemColumnInfo*) columns;

    while( column && l ) {
	l = l->next;
	column--;
    }

    return l ? l->text : QString::null;
}


/*!  Sets the text in column \a column to \a text, if \a column is a
  valid column number and \a text is different from the existing text.

  If \a text() has been reimplemented, this function may be a no-op.

  \sa text() key()
*/

void QListViewItem::setText( int column, const QString &text )
{
    if ( column < 0 )
	return;

    QListViewPrivate::ItemColumnInfo * l
	= (QListViewPrivate::ItemColumnInfo*) columns;
    if ( !l ) {
	l = new QListViewPrivate::ItemColumnInfo;
	columns = (void*)l;
    }
    for( int c = 0; c < column; c++ ) {
	if ( !l->next )
	    l->next = new QListViewPrivate::ItemColumnInfo;
	l = l->next;
    }
    if ( l->text == text )
	return;

    int oldLc = 0;
    int newLc = 0;
    if ( mlenabled ) {
	if ( !l->text.isEmpty() )
	    oldLc = l->text.contains( QChar( '\n' ) ) + 1;
	if ( !text.isEmpty() )
	    newLc = text.contains( QChar( '\n' ) ) + 1;
    }

    l->dirty = TRUE;
    l->text = text;
    if ( column == (int)lsc )
	lsc = Unsorted;
    QListView * lv = listView();

    if ( mlenabled && oldLc != newLc )
	setup();
    else
	widthChanged( column );

    if ( lv ) {
	lv->d->useDoubleBuffer = TRUE;
	lv->triggerUpdate();
    }
}


/*!
    Sets the pixmap in column \a column to \a pm, if \a pm is non-null
    and different from the current pixmap, and if \a column is
    non-negative.

  \sa pixmap() setText()
*/

void QListViewItem::setPixmap( int column, const QPixmap & pm )
{
    int oldW = 0;
    int oldH = 0;
    if ( pixmap( column ) ) {
	oldW = pixmap( column )->width();
	oldH = pixmap( column )->height();
    }

    if ( column < 0 )
	return;

    QListViewPrivate::ItemColumnInfo * l
	= (QListViewPrivate::ItemColumnInfo*) columns;
    if ( !l ) {
	l = new QListViewPrivate::ItemColumnInfo;
	columns = (void*)l;
    }

    for( int c = 0; c < column; c++ ) {
	if ( !l->next )
	    l->next = new QListViewPrivate::ItemColumnInfo;
	l = l->next;
    }

    if ( ( pm.isNull() && ( !l->pm || l->pm->isNull() ) ) ||
	 ( l->pm && pm.serialNumber() == l->pm->serialNumber() ) )
	return;

    if ( pm.isNull() ) {
	delete l->pm;
	l->pm = 0;
    } else {
	if ( l->pm )
	    *(l->pm) = pm;
	else
	    l->pm = new QPixmap( pm );
    }

    int newW = 0;
    int newH = 0;
    if ( pixmap( column ) ) {
	newW = pixmap( column )->width();
	newH = pixmap( column )->height();
    }

    if ( oldW != newW || oldH != newH ) {
	setup();
	widthChanged( column );
	invalidateHeight();
    }
    QListView *lv = listView();
    if ( lv ) {
	lv->d->useDoubleBuffer = TRUE;
	lv->triggerUpdate();
    }
}


/*!  Returns a pointer to the pixmap for \a column, or a null pointer
  if there is no pixmap for \a column.

  \sa setText() setPixmap()
*/

const QPixmap * QListViewItem::pixmap( int column ) const
{
    QListViewPrivate::ItemColumnInfo * l
    = (QListViewPrivate::ItemColumnInfo*) columns;

    while( column && l ) {
	l = l->next;
	column--;
    }

    return (l && l->pm) ? l->pm : 0;
}


/*! This virtual function paints the contents of one column of an item
  and aligns it as described by \a align.

  \a p is a QPainter open on the relevant paint device.  \a p is
  translated so (0, 0) is the top-left pixel in the cell and \a width-1,
  height()-1 is the bottom-right pixel \e in the cell.  The other
  properties of \a p (pen, brush, etc) are undefined.  \a cg is the
  color group to use.  \a column is the logical column number within
  the item that is to be painted; 0 is the column which may contain a
  tree.

  This function may use QListView::itemMargin() for readability
  spacing on the left and right sides of data such as text,
  and should honor isSelected() and QListView::allColumnsShowFocus().

  If you reimplement this function, you should also reimplement
  width().

  The rectangle to be painted is in an undefined state when this
  function is called, so you \e must draw on all the pixels.  The
  painter \a p has the right font on entry.

  \sa paintBranches(), QListView::drawContentsOffset()
*/

void QListViewItem::paintCell( QPainter * p, const QColorGroup & cg,
			       int column, int width, int align )
{
    // Change width() if you change this.

    if ( !p )
	return;

    QListView *lv = listView();
    if ( !lv )
	return;
    QFontMetrics fm( p->fontMetrics() );

    // had, but we _need_ the column info for the ellipsis thingy!!!
    if ( !columns ) {
	for ( uint i = 0; i < lv->d->column.size(); ++i ) {
	    setText( i, text( i ) );
	}
    }

    QString t = text( column );

    if ( columns ) {
	QListViewPrivate::ItemColumnInfo *ci = 0;
	// try until we have a column info....
	while ( !ci ) {
	    ci = (QListViewPrivate::ItemColumnInfo*)columns;
	    for ( int i = 0; ci && (i < column); ++i )
		ci = ci->next;

	    if ( !ci ) {
		setText( column, t );
		ci = 0;
	    }
	}

	// if the column width changed and this item was not painted since this change
	if ( ci && ( ci->width != width || ci->text != t || ci->dirty ) ) {
	    ci->dirty = FALSE;
	    ci->width = width;
	    ci->truncated = FALSE;
	    // if we have to do the ellipsis thingy calc the truncated text
	    int pw = pixmap( column ) ? pixmap( column )->width() + lv->itemMargin() : lv->itemMargin();
	    if ( !mlenabled && fm.width( t ) + pw > width ) {
		// take care of arabic shaping in width calculation (lars)
		ci->truncated = TRUE;
		ci->tmpText = "...";
		int i = 0;
		while ( fm.width( ci->tmpText + t[ i ] ) + pw < width )
		    ci->tmpText += t[ i++ ];
		ci->tmpText.remove( 0, 3 );
		if ( ci->tmpText.isEmpty() )
		    ci->tmpText = t.left( 1 );
		ci->tmpText += "...";
	    } else if ( mlenabled && fm.width( t ) + pw > width ) {
		QStringList list = QStringList::split( QChar('\n'), t, TRUE );
		for ( QStringList::Iterator it = list.begin(); it != list.end(); ++it ) {
		    QString z = (*it).latin1();
		    if ( fm.width( z ) + pw > width ) {
			ci->truncated = TRUE;
			QString tempText = "...";
			int i = 0;
			while ( fm.width( tempText + z[ i ]) + pw < width )
			    tempText += z[i++];
			tempText.remove( 0, 3 );
			if ( tempText.isEmpty() )
			    tempText = z.left( 1 );
			tempText += "...";
			*it = tempText;
		    }
		}

		if ( ci->truncated )
		    ci->tmpText = list.join( QString("\n") );
	    }
	}

	// if we have to draw the ellipsis thingy, use the truncated text
	if ( ci && ci->truncated )
	    t = ci->tmpText;
    }

    int marg = lv->itemMargin();
    int r = marg;
    const QPixmap * icon = pixmap( column );

    const BackgroundMode bgmode = lv->viewport()->backgroundMode();
    const QColorGroup::ColorRole crole = QPalette::backgroundRoleFromMode( bgmode );
    if ( cg.brush( crole ) != lv->colorGroup().brush( crole ) )
	p->fillRect( 0, 0, width, height(), cg.brush( crole ) );
    else
	lv->paintEmptyArea( p, QRect( 0, 0, width, height() ) );

    // (lars) what does this do???
#if 0 // RS: ####
    if ( align != AlignLeft )
	marg -= lv->d->minRightBearing;
#endif
    if ( isSelected() &&
	 (column == 0 || listView()->allColumnsShowFocus()) ) {
	p->fillRect( r - marg, 0, width - r + marg, height(),
		     cg.brush( QColorGroup::Highlight ) );
	if ( enabled || !lv )
	    p->setPen( cg.highlightedText() );
	else if ( !enabled && lv)
	    p->setPen( lv->palette().disabled().highlightedText() );
    } else {
	if ( enabled || !lv )
	    p->setPen( cg.text() );
	else if ( !enabled && lv)
	    p->setPen( lv->palette().disabled().text() );
    }


#if 0
    bool reverse = QApplication::reverseLayout();
#else
    bool reverse = FALSE;
#endif
    int iconWidth = 0;

    if ( icon ) {
	iconWidth = icon->width() + listView()->itemMargin();
	int x = r;
	if ( reverse )
	    x = width - 2*marg - iconWidth;
	p->drawPixmap( x, (height()-icon->height())/2, *icon );
    }

    if ( !t.isEmpty() ) {
	if ( !mlenabled ) {
	    if ( !(align & AlignTop || align & AlignBottom) )
		align |= AlignVCenter;
	} else {
	    if ( !(align & AlignVCenter || align & AlignBottom) )
		align |= AlignTop;
	}
	if ( !reverse )
	    r += iconWidth;

	if ( !mlenabled ) {
	    p->drawText( r, 0, width-marg-r, height(), align, t );
	} else {
	    p->drawText( r, marg, width-marg-r, height(), align, t );
	}
    }

    if ( mlenabled && column == 0 && isOpen() && childCount() ) {
	int textheight = fm.size( align, t ).height() + 2 * lv->itemMargin();
	textheight = QMAX( textheight, QApplication::globalStrut().height() );
	if ( textheight % 2 > 0 )
	    textheight++;
	if ( textheight < height() ) {
	    int w = lv->treeStepSize() / 2;
	    lv->style().drawComplexControl( QStyle::CC_ListView, p, lv,
					    QRect( 0, textheight, w + 1, height() - textheight + 1 ), cg,
					    lv->isEnabled() ? QStyle::Style_Enabled : QStyle::Style_Default,
					    QStyle::SC_ListViewExpand,
					    QStyle::SC_All, QStyleOption( this ) );
	}
    }
}

/*!
  Returns the number of pixels of width required to draw column \a c
  of list view \a lv, using the metrics \a fm without cropping.
  The list view containing this item may use
  this information depending on the QListView::WidthMode settings
  for the column.

  The default implementation returns the width of the bounding
  rectangle of the text of column \a c.

  \sa listView() widthChanged() QListView::setColumnWidthMode()
  QListView::itemMargin()
*/
int QListViewItem::width( const QFontMetrics& fm,
			  const QListView* lv, int c ) const
{
    int w;
    if ( mlenabled )
	w = fm.size( AlignVCenter, text( c ) ).width() + lv->itemMargin() * 2
	    - lv->d->minLeftBearing - lv->d->minRightBearing;
    else
	w = fm.width( text( c ) ) + lv->itemMargin() * 2
	    - lv->d->minLeftBearing - lv->d->minRightBearing;
    const QPixmap * pm = pixmap( c );
    if ( pm )
	w += pm->width() + lv->itemMargin(); // ### correct margin stuff?
    return QMAX( w, QApplication::globalStrut().width() );
}


/*!  Paints a focus indication on the rectangle \a r using painter \a p
  and colors \a cg.

  \a p is already clipped.

  \sa paintCell() paintBranches() QListView::setAllColumnsShowFocus()
*/

void QListViewItem::paintFocus( QPainter *p, const QColorGroup &cg,
				const QRect & r )
{
    listView()->style().drawPrimitive( QStyle::PE_FocusRect, p, r, cg,
				       (isSelected() ?
					QStyle::Style_FocusAtBorder :
					QStyle::Style_Default),
				       QStyleOption(isSelected() ? cg.highlight() : cg.base() ));
}


/*! Paints a set of branches from this item to (some of) its children.

  Painter \a p is set up with clipping and translation so that you can
  draw only in the rectangle you need to; \a cg is the color group to
  use; the update rectangle is at (0, 0) and has size width \a w by
  height \a h.  The top of the rectangle you own is at \a y (which is
  never greater than 0 but can be outside the window system's allowed
  coordinate range).

  The update rectangle is in an undefined state when this function is
  called; this function must draw on \e all of the pixels.

  \sa paintCell(), QListView::drawContentsOffset()
*/

void QListViewItem::paintBranches( QPainter * p, const QColorGroup & cg,
				   int w, int y, int h )
{
    listView()->paintEmptyArea( p, QRect( 0, 0, w, h ) );
    if ( !visible )
	return;
    QListView *lv = listView();
    if ( lv ) {
	lv->style().drawComplexControl( QStyle::CC_ListView, p, lv,
					QRect( 0, y, w, h ),
					cg,
					lv->isEnabled() ? QStyle::Style_Enabled :
					QStyle::Style_Default,
					(QStyle::SC_ListViewBranch |
					 QStyle::SC_ListViewExpand),
					QStyle::SC_None, QStyleOption(this));
    }
}


QListViewPrivate::Root::Root( QListView * parent )
    : QListViewItem( parent )
{
    lv = parent;
    setHeight( 0 );
    setOpen( TRUE );
}


void QListViewPrivate::Root::setHeight( int )
{
    QListViewItem::setHeight( 0 );
}


void QListViewPrivate::Root::invalidateHeight()
{
    QListViewItem::invalidateHeight();
    lv->triggerUpdate();
}


QListView * QListViewPrivate::Root::theListView() const
{
    return lv;
}


void QListViewPrivate::Root::setup()
{
    // explicitly nothing
}



/*!
\internal
If called after a mouse click, tells the list view to ignore a
following double click. This state is reset after the next mouse click.
*/

void QListViewItem::ignoreDoubleClick()
{
    QListView *lv = (QListView*)listView();
    lv->d->ignoreDoubleClick = TRUE;
}



/*! \fn void  QListView::onItem( QListViewItem *i )

  This signal is emitted when the user moves the mouse cursor onto the
  item \a i, similar to the QWidget::enterEvent() function.
*/

// ### bug here too? see qiconview.cppp onItem/onViewport

/*! \fn void  QListView::onViewport()
  This signal is emitted when the user moves the mouse cursor from an
  item to an empty part of the list view.
*/

/*! \enum QListView::SelectionMode

  This enumerated type is used by QListView to indicate how it reacts
  to selection by the user.  It has four values:

  \value Single  When the user selects an item, any already-selected
  item becomes unselected, and the user cannot unselect the selected
  item. This means that the user can never clear the selection, even
  though the selection may be cleared by the application programmer
  using QListView::clearSelection().

  \value Multi  When the user selects an item in the most ordinary
  way, the selection status of that item is toggled and the other
  items are left alone.

  \value Extended When the user selects an item in the most
  ordinary way, the selection is cleared and the new item selected.
  However, if the user presses the CTRL key when clicking on an item,
  the clicked item gets toggled and all other items are left untouched. And
  if the user presses the SHIFT key while clicking on an item, all items
  between the current item and the clicked item get selected or unselected,
  depending on the state of the clicked item.
  Also, multiple items can be selected by dragging the mouse while the
  left mouse button stays pressed.

  \value NoSelection  Items cannot be selected.

  In other words, \c Single is a real single-selection list view, \c
  Multi a real multi-selection list view, \c Extended is a list view
  where users can select multiple items but usually want to select
  either just one or a range of contiguous items, and \c NoSelection
  is a list view where the user can look but not touch.
*/

/*! \enum QListView::ResizeMode

  This enum describes how the header adjusts to resize events which
  affect the width of the listview.

  \value NoColumn The columns do not get resized in resize events.

  \value AllColumns All columns are resized equally to fit the width
  of the listview.

  \value LastColumn The last columns is resized to fit the with of the
  listview.

*/

/*! \enum QListView::RenameAction

  This enum describes whether a rename operation is accepted if the
  rename editor loses focus without the user pressing Enter.

  \value Accept Rename if Enter is pressed or focus is lost.

  \value Reject Discard the rename operation if focus is lost (and
  Enter has not been pressed).

*/

/*!
  \class QListView
  \brief The QListView class implements a list/tree view.
  \ingroup advanced
  \mainclass

  It can display and control a hierarchy of multi-column items, and
  provides the ability to add new items at any time. Among others the user
  may select one or many items and sort the list in increasing or decreasing
  order by any column.

  The simplest mode of use is to create a QListView, add some column
  headers using addColumn() and create one or more QListViewItem or
  QCheckListItem objects with the QListView as parent:

  \quotefile xml/tagreader-with-features/structureparser.h
  \skipto QListView * table
  \printline
  \quotefile xml/tagreader-with-features/structureparser.cpp
  \skipto addColumn
  \printline addColumn
  \printline
  \skipto new QListViewItem( table
  \printline

  Further nodes can be added to the listview object (the root of the
  tree) or as child nodes to QListViewItems:

  \skipto for ( int i = 0 ; i < attributes.length();
  \printuntil }

  (From
  \link xml/tagreader-with-features/structureparser.cpp
  xml/tagreader-with-features/structureparser.cpp \endlink )

  The main setup functions are
  \list
  \i \l addColumn() - adds a column with text and perhaps width.

  \i \l setColumnWidthMode() - sets the column to be resized
  automatically or not.

  \i \l setAllColumnsShowFocus() - sets whether items should show
  keyboard focus using all columns or just column 0.  The default is
  to show focus using just column 0.

  \i \l setRootIsDecorated() - sets whether root items can be opened
  and closed by the user and have open/close decoration to their left.
  The default is FALSE.

  \i \l setTreeStepSize() - sets how many pixels an item's
  children are indented relative to their parent.  The default is 20.
  This is mostly a matter of taste.

  \i \l setSorting() - sets whether the items should be sorted,
  whether it should be in ascending or descending order, and by what
  column it should be sorted. By default the list view is sorted by
  the first column; to switch this off call setSorting( -1 ).
  \endlist

  To handle events such as mouse presses on the list view, derived classes
  can reimplement the QScrollView functions
\link QScrollView::contentsMousePressEvent() contentsMousePressEvent\endlink,
\link QScrollView::contentsMouseReleaseEvent() contentsMouseReleaseEvent\endlink,
\link QScrollView::contentsMouseDoubleClickEvent() contentsMouseDoubleClickEvent\endlink,
\link QScrollView::contentsMouseMoveEvent() contentsMouseMoveEvent\endlink,
\link QScrollView::contentsDragEnterEvent() contentsDragEnterEvent\endlink,
\link QScrollView::contentsDragMoveEvent() contentsDragMoveEvent\endlink,
\link QScrollView::contentsDragLeaveEvent() contentsDragLeaveEvent\endlink,
\link QScrollView::contentsDropEvent() contentsDropEvent\endlink, and
\link QScrollView::contentsWheelEvent() contentsWheelEvent\endlink.

  There are also several functions for mapping between items and
  coordinates.  itemAt() returns the item at a position on-screen,
  itemRect() returns the rectangle an item occupies on the screen, and
  itemPos() returns the position of any item (not on-screen in the
  list view).  firstChild() returns the item at the top of the view
  (not necessarily on-screen) so you can iterate over the items using
  either QListViewItem::itemBelow() or a combination of
  QListViewItem::firstChild() and QListViewItem::nextSibling().

  If you need to move a list view item you can use takeItem() and
  insertItem(). Item's are deleted with delete; to delete all items
  use clear(). See the QListViewItem documentation for examples of
  traversal.

  There are a variety of selection modes described in the
  QListView::SelectionMode documentation. The default is
  Single selection, which you can change using setSelectionMode().

  Because QListView offers multiple selection it has to display keyboard
  focus and selection state separately.  Therefore there are functions
  both to set the selection state of an item (setSelected()) and to
  select which item displays keyboard focus (setCurrentItem()).

  QListView emits two groups of signals; one group signals changes in
  selection/focus state and one signals selection.  The first group
  consists of selectionChanged() (applicable to all list views),
  selectionChanged( QListViewItem * ) (applicable only to Single
  selection list view), and currentChanged( QListViewItem * ). The
  second group consists of doubleClicked( QListViewItem * ),
  returnPressed( QListViewItem * ) and rightButtonClicked(
  QListViewItem *, const QPoint&, int ), etc.

  In Motif style, QListView deviates fairly strongly from the look and
  feel of the Motif hierarchical tree view.  This is done mostly to
  provide a usable keyboard interface and to make the list view look
  better with a white background.

    If selectionMode() is Single (the default) the user can select one
    item at a time, e.g. by clicking an item with the mouse, see
    \l QListView::SelectionMode for details.

   The listview can be navigated either using the mouse or the
   keyboard. Clicking an \e - icon closes an item (hides its
   children) and clicking an \e + icon opens an item (shows its
   children). The keyboard controls are these:
   \list
   \i \e Home - Make the first item current and visible.
   \i \e End - Make the last item current and visible.
   \i \e{Page Up} - Make the item above the top visible item current
   and visible.
   \i \e{Page Down} - Make the item below the bottom visible item current
   and visible.
   \i \e{Up Arrow} - Make the item above the current item current and
   visible.
   \i \e{Down Arrow} - Make the item below the current item current and
   visible.
   \i \e{Left Arrow} - If the current item is closed (\e + icon) or has
   no children make its parent item current and visible. If the
   current item is open (\e - icon) close it, i.e. hide its children.
   Exception: if the current item is the first item and is closed and
   the horizontal scrollbar is offset to the right the listview will
   be scrolled left.
   \i \e{Right Arrow} - If the current item is closed (\e + icon) and
   has children the item is opened. If the current item is opened (\e
   - icon) and has children the item's first child is made current and
   visible. If the current item has no children the listview is
   scrolled right.
   \endlist
   If the user starts typing letters with the focus in the listview an
   incremental search will occur. For example if the user types 'd'
   the current item will change to the first item that begins with the
   letter 'd'; if they then type 'a', the current item will change to
   the first item that begins with 'da', and so on. If no item begins
   with the letters they type the current item doesn't change.

  \warning The list view assumes ownership of all list view items
  and will delete them when it does not need them any more.

  <img src=qlistview-m.png> <img src=qlistview-w.png>

  \sa QListViewItem QCheckListItem
*/

/*! \fn void QListView::itemRenamed (QListViewItem * item, int col )

  \overload

  This signal is emitted when \a item has been renamed, e.g. by
  in-place renaming, in column \a col.
*/

/*! \fn void QListView::itemRenamed (QListViewItem * item, int col, const QString &text)

  This signal is emitted when \a item has been renamed to \a text,
  e.g. by in in-place renaming, in column \a col.
*/

/*! Constructs a new empty list view, with \a parent as a parent and \a name
  as object name.

  Performance is boosted by modifying the widget flags \a f so that only
  part of the QListViewItem children is redrawn.  This may be unsuitable
  for custom QListViewItem classes, in which case \c WStaticContents and
  \c WRepaintNoErase should be cleared.

  \sa QWidget::clearWFlags() Qt::WidgetFlags
*/
QListView::QListView( QWidget * parent, const char *name, WFlags f )
    : QScrollView( parent, name, f | WStaticContents | WRepaintNoErase )
{
    init();
}

void QListView::init()
{
    d = new QListViewPrivate;
    d->vci = 0;
    d->timer = new QTimer( this );
    d->levelWidth = 20;
    d->r = 0;
    d->rootIsExpandable = 0;
    d->h = new QHeader( this, "list view header" );
    d->h->installEventFilter( this );
    d->focusItem = 0;
    d->oldFocusItem = 0;
    d->drawables = 0;
    d->dirtyItems = 0;
    d->dirtyItemTimer = new QTimer( this );
    d->visibleTimer = new QTimer( this );
    d->renameTimer = new QTimer( this );
    d->margin = 1;
    d->selectionMode = QListView::Single;
    d->sortcolumn = 0;
    d->ascending = TRUE;
    d->allColumnsShowFocus = FALSE;
    d->fontMetricsHeight = fontMetrics().height();
    d->h->setTracking(TRUE);
    d->buttonDown = FALSE;
    d->ignoreDoubleClick = FALSE;
    d->column.setAutoDelete( TRUE );
    d->iterators = 0;
    d->scrollTimer = 0;
    d->sortIndicator = FALSE;
    d->clearing = FALSE;
    d->minLeftBearing = fontMetrics().minLeftBearing();
    d->minRightBearing = fontMetrics().minRightBearing();
    d->ellipsisWidth = fontMetrics().width( "..." ) * 2;
    d->highlighted = 0;
    d->pressedItem = 0;
    d->selectAnchor = 0;
    d->select = TRUE;
    d->useDoubleBuffer = FALSE;
    d->startDragItem = 0;
    d->was_visible = FALSE;
    d->toolTips = TRUE;
#ifndef QT_NO_TOOLTIP
    d->toolTip = new QListViewToolTip( viewport(), this );
#endif
    d->updateHeader = FALSE;
    d->fullRepaintOnComlumnChange = FALSE;
    d->resizeMode = NoColumn;
    d->defRenameAction = Reject;
    d->pressedEmptyArea = FALSE;

    setMouseTracking( TRUE );
    viewport()->setMouseTracking( TRUE );

    connect( d->timer, SIGNAL(timeout()),
	     this, SLOT(updateContents()) );
    connect( d->dirtyItemTimer, SIGNAL(timeout()),
	     this, SLOT(updateDirtyItems()) );
    connect( d->visibleTimer, SIGNAL(timeout()),
	     this, SLOT(makeVisible()) );
    connect( d->renameTimer, SIGNAL(timeout()),
	     this, SLOT(startRename()) );

    connect( d->h, SIGNAL(sizeChange( int, int, int )),
	     this, SLOT(handleSizeChange( int, int, int )) );
    connect( d->h, SIGNAL(moved( int, int )),
	     this, SLOT(triggerUpdate()) );
    connect( d->h, SIGNAL(sectionClicked( int )),
	     this, SLOT(changeSortColumn( int )) );
    connect( horizontalScrollBar(), SIGNAL(sliderMoved(int)),
	     d->h, SLOT(setOffset(int)) );
    connect( horizontalScrollBar(), SIGNAL(valueChanged(int)),
	     d->h, SLOT(setOffset(int)) );

    // will access d->r
    QListViewPrivate::Root * r = new QListViewPrivate::Root( this );
    r->is_root = TRUE;
    d->r = r;
    d->r->setSelectable( FALSE );

    viewport()->setFocusProxy( this );
    viewport()->setFocusPolicy( WheelFocus );
    viewport()->setBackgroundMode( PaletteBase );
    setBackgroundMode( PaletteBackground, PaletteBase );
}

/*! \property QListView::showSortIndicator
    \brief whether the list view header should display a sort indicator or not

  If this property is TRUE, an arrow is drawn in the header of the
  list view to indicate the sort order of the list view contents. The
  arrow will be drawn in the correct column and will point up or down,
  depending on the current sort direction. The default is FALSE (don't
  show an indicator).

  \sa QHeader::setSortIndicator()
*/

void QListView::setShowSortIndicator( bool show )
{
    if ( show == d->sortIndicator )
	return;

    d->sortIndicator = show;
    if ( d->sortcolumn != Unsorted && d->sortIndicator )
	d->h->setSortIndicator( d->sortcolumn, d->ascending );
    else
	d->h->setSortIndicator( -1 );
}

bool QListView::showSortIndicator() const
{
    return d->sortIndicator;
}

/*! \property QListView::showToolTips
    \brief whether this list view should show tooltips for truncated column
    texts

    The default is TRUE.
*/

void QListView::setShowToolTips( bool b )
{
    d->toolTips = b;
}

bool QListView::showToolTips() const
{
    return d->toolTips;
}

/*! \property QListView::resizeMode
    \brief whether all, none or the last column should be resized

  Specifies whether all, none or the last column should be resized to
  fit the full width of the listview. The values for this property can
  be one of the following: \c NoColumn (the default), \c AllColumns or
  \c LastColumn.

  \sa QHeader, header()
*/

void QListView::setResizeMode( ResizeMode m )
{
    d->resizeMode = m;
    if ( m == NoColumn )
	header()->setStretchEnabled( FALSE );
    else if ( m == AllColumns )
	header()->setStretchEnabled( TRUE );
    else
	header()->setStretchEnabled( TRUE, header()->count() - 1 );
}

QListView::ResizeMode QListView::resizeMode() const
{
    return d->resizeMode;
}

/*!
  Destroys the list view, deleting all its items, and frees up all
  allocated resources.
*/

QListView::~QListView()
{
    if ( d->iterators ) {
	QListViewItemIterator *i = d->iterators->first();
	while ( i ) {
	    i->listView = 0;
	    i = d->iterators->next();
	}
	delete d->iterators;
    }

    d->focusItem = 0;
    delete d->r;
    d->r = 0;
    delete d->dirtyItems;
    d->dirtyItems = 0;
    delete d->drawables;
    d->drawables = 0;
    delete d->vci;
    d->vci = 0;
#ifndef QT_NO_TOOLTIP
    delete d->toolTip;
    d->toolTip = 0;
#endif
    delete d;
    d = 0;
}


/*! Calls QListViewItem::paintCell() and/or
  QListViewItem::paintBranches() for all list view items that
  require repainting in the \a cw pixels wide and \a ch pixels high
  bounding rectangle starting at position \a cx, \a cy with offset \a
  ox, \a oy. Uses the painter \a p.
*/

void QListView::drawContentsOffset( QPainter * p, int ox, int oy,
				    int cx, int cy, int cw, int ch )
{
    if ( !d->drawables ||
	 d->drawables->isEmpty() ||
	 d->topPixel > cy ||
	 d->bottomPixel < cy + ch - 1 ||
	 d->r->maybeTotalHeight < 0 )
	buildDrawableList();

    if ( d->dirtyItems ) {
	QRect br( cx - ox, cy - oy, cw, ch );
	QPtrDictIterator<void> it( *(d->dirtyItems) );
	QListViewItem * i;
	while( (i = (QListViewItem *)(it.currentKey())) != 0 ) {
	    ++it;
	    QRect ir = itemRect( i ).intersect( viewport()->rect() );
	    if ( ir.isEmpty() || br.contains( ir ) )
		// we're painting this one, or it needs no painting: forget it
		d->dirtyItems->remove( (void *)i );
	}
	if ( d->dirtyItems->count() ) {
	    // there are still items left that need repainting
	    d->dirtyItemTimer->start( 0, TRUE );
	} else {
	    // we're painting all items that need to be painted
	    delete d->dirtyItems;
	    d->dirtyItems = 0;
	    d->dirtyItemTimer->stop();
	}
    }

    p->setFont( font() );

    QPtrListIterator<QListViewPrivate::DrawableItem> it( *(d->drawables) );

    QRect r;
    int fx = -1, x, fc = 0, lc = 0;
    int tx = -1;
    QListViewPrivate::DrawableItem * current;

    while ( (current = it.current()) != 0 ) {
	++it;
	if ( !current->i->isVisible() )
	    continue;
	int ih = current->i->height();
	int ith = current->i->totalHeight();
	int c;
	int cs;

	// need to paint current?
	if ( ih > 0 && current->y < cy+ch && current->y+ih >= cy ) {
	    if ( fx < 0 ) {
		// find first interesting column, once
		x = 0;
		c = 0;
		cs = d->h->cellSize( 0 );
		while ( x + cs <= cx && c < d->h->count() ) {
		    x += cs;
		    c++;
		    if ( c < d->h->count() )
			cs = d->h->cellSize( c );
		}
		fx = x;
		fc = c;
		while( x < cx + cw && c < d->h->count() ) {
		    x += cs;
		    c++;
		    if ( c < d->h->count() )
			cs = d->h->cellSize( c );
		}
		lc = c;
	    }

	    x = fx;
	    c = fc;
	    // draw to last interesting column

	    bool drawActiveSelection = hasFocus() ||
			    !style().styleHint( QStyle::SH_ItemView_ChangeHighlightOnFocus, this ) ||
			    ( qApp->focusWidget() && qApp->focusWidget()->isPopup() ) ||
			    ( currentItem() && currentItem()->renameBox && currentItem()->renameBox->hasFocus() );
	    const QColorGroup &cg = ( drawActiveSelection ? colorGroup() : palette().inactive() );

	    while ( c < lc && d->drawables ) {
		int i = d->h->mapToLogical( c );
		cs = d->h->cellSize( c );
		r.setRect( x - ox, current->y - oy, cs, ih );
		if ( i == 0 && current->i->parentItem )
		    r.setLeft( r.left() + current->l * treeStepSize() );

		p->save();
		p->translate( r.left(), r.top() );
		int ac = d->h->mapToLogical( c );
		// map to Left currently. This should change once we
		// can really reverse the listview.
		int align = columnAlignment( ac );
		if ( align == AlignAuto ) align = AlignLeft;
		if ( d->useDoubleBuffer ) {
		    QSharedDoubleBuffer buffer( TRUE, FALSE );
		    QRect a( QPoint( 0, 0 ), QSize( r.width(), current->i->height() ) );
		    buffer.begin( p, a );
		    if ( buffer.isBuffered() )
			paintEmptyArea( buffer.painter(), a );
		    buffer.painter()->setFont( p->font() );
		    buffer.painter()->setPen( p->pen() );
		    buffer.painter()->setBrush( p->brush() );
		    current->i->paintCell( buffer.painter(), cg, ac, r.width(),
					   align );
		} else {
		    current->i->paintCell( p, cg, ac, r.width(),
					   align );
		}
		p->restore();
		x += cs;
		c++;
	    }
	    if ( current->i == d->focusItem && hasFocus() &&
		 !d->allColumnsShowFocus ) {
		p->save();
		int c = d->h->mapToActual( 0 );
		QRect r( d->h->cellPos( c ) - ox, current->y - oy, d->h->cellSize( c ), ih );
		if ( current->i->parentItem )
		    r.setLeft( r.left() + current->l * treeStepSize() );
		current->i->paintFocus( p, colorGroup(), r );
		p->restore();
	    }
	}

	// does current need focus indication?
	if ( current->i == d->focusItem && hasFocus() &&
	     d->allColumnsShowFocus ) {
	    p->save();
	    int x = -contentsX();
	    int w = header()->cellPos( header()->count() - 1 ) +
		    header()->cellSize( header()->count() - 1 );

	    r.setRect( x, current->y - oy, w, ih );
	    if ( d->h->mapToActual( 0 ) == 0 || ( current->l == 0 && !rootIsDecorated() ) ) {
		r.setLeft( r.left() + current->l * treeStepSize() );
		current->i->paintFocus( p, colorGroup(), r );
	    } else {
		int xdepth = treeStepSize() * ( current->i->depth() + ( rootIsDecorated() ? 1 : 0) )
			     + itemMargin();
		xdepth += d->h->cellPos( d->h->mapToActual( 0 ) );
		QRect r1( r );
		r1.setRight( d->h->cellPos( d->h->mapToActual( 0 ) ) - 1 );
		QRect r2( r );
		r2.setLeft( xdepth - 1 );
		current->i->paintFocus( p, colorGroup(), r1 );
		current->i->paintFocus( p, colorGroup(), r2 );
	    }
	    p->restore();
	}

	if ( tx < 0 )
	    tx = d->h->cellPos( d->h->mapToActual( 0 ) );

	// do any children of current need to be painted?
	if ( ih != ith &&
	     (current->i != d->r || d->rootIsExpandable) &&
	     current->y + ith > cy &&
	     current->y + ih < cy + ch &&
	     tx + current->l * treeStepSize() < cx + cw &&
	     tx + (current->l+1) * treeStepSize() > cx ) {
	    // compute the clip rectangle the safe way

	    int rtop = current->y + ih;
	    int rbottom = current->y + ith;
	    int rleft = tx + current->l*treeStepSize();
	    int rright = rleft + treeStepSize();

	    int crtop = QMAX( rtop, cy );
	    int crbottom = QMIN( rbottom, cy+ch );
	    int crleft = QMAX( rleft, cx );
	    int crright = QMIN( rright, cx+cw );

	    r.setRect( crleft-ox, crtop-oy,
		       crright-crleft, crbottom-crtop );

	    if ( r.isValid() ) {
		p->save();
		p->translate( rleft-ox, crtop-oy );
		current->i->paintBranches( p, colorGroup(), treeStepSize(),
					   rtop - crtop, r.height() );
		p->restore();
	    }
	}
    }

    if ( d->r->totalHeight() < cy + ch )
	paintEmptyArea( p, QRect( cx - ox, d->r->totalHeight() - oy,
				  cw, cy + ch - d->r->totalHeight() ) );

    int c = d->h->count()-1;
    if ( c >= 0 &&
	 d->h->cellPos( c ) + d->h->cellSize( c ) < cx + cw ) {
	c = d->h->cellPos( c ) + d->h->cellSize( c );
	paintEmptyArea( p, QRect( c - ox, cy - oy, cx + cw - c, ch ) );
    }
}



/*!  Paints \a rect so that it looks like empty background using
  painter \a p.  \a rect is is widget coordinates, ready to be fed to \a
  p.

  The default function fills \a rect with the viewport()->backgroundBrush()
*/

void QListView::paintEmptyArea( QPainter * p, const QRect & rect )
{
    QStyleOption opt( d->sortcolumn, 0 ); // ### hack; in 3.1, add a property in QListView and QHeader
    QStyle::SFlags how = QStyle::Style_Default;
    if ( isEnabled() )
	how |= QStyle::Style_Enabled;

    style().drawComplexControl( QStyle::CC_ListView,
				p, this, rect, colorGroup(),
				how, QStyle::SC_ListView, QStyle::SC_None,
				opt );
}


/*! Rebuilds the list of drawable QListViewItems.  This function is
  const so that const functions can call it without requiring
  d->drawables to be mutable.
*/

void QListView::buildDrawableList() const
{
    d->r->enforceSortOrder();

    QPtrStack<QListViewPrivate::Pending> stack;
    stack.push( new QListViewPrivate::Pending( ((int)d->rootIsExpandable)-1,
					       0, d->r ) );

    // could mess with cy and ch in order to speed up vertical
    // scrolling
    int cy = contentsY();
    int ch = ((QListView *)this)->visibleHeight();
    // ### hack to help sizeHint().  if not visible, assume that we'll
    // ### use 200 pixels rather than whatever QScrollView thinks.
    // ### this lets sizeHint() base its width on a more realistic
    // ### number of items.
    if ( !isVisible() && ch < 200 )
	ch = 200;
    d->topPixel = cy + ch; // one below bottom
    d->bottomPixel = cy - 1; // one above top

    QListViewPrivate::Pending * cur;

    // used to work around lack of support for mutable
    QPtrList<QListViewPrivate::DrawableItem> * dl;

    dl = new QPtrList<QListViewPrivate::DrawableItem>;
    dl->setAutoDelete( TRUE );
    if ( d->drawables )
	delete ((QListView *)this)->d->drawables;
    ((QListView *)this)->d->drawables = dl;

    while ( !stack.isEmpty() ) {
	cur = stack.pop();

	int ih = cur->i->height();
	int ith = cur->i->totalHeight();

	// is this item, or its branch symbol, inside the viewport?
	if ( cur->y + ith >= cy && cur->y < cy + ch ) {
	    dl->append( new QListViewPrivate::DrawableItem(cur));
	    // perhaps adjust topPixel up to this item?  may be adjusted
	    // down again if any children are not to be painted
	    if ( cur->y < d->topPixel )
		d->topPixel = cur->y;
	    // bottompixel is easy: the bottom item drawn contains it
	    d->bottomPixel = cur->y + ih - 1;
	}

	// push younger sibling of cur on the stack?
	if ( cur->y + ith < cy+ch && cur->i->siblingItem )
	    stack.push( new QListViewPrivate::Pending(cur->l,
						      cur->y + ith,
						      cur->i->siblingItem));

	// do any children of cur need to be painted?
	if ( cur->i->isOpen() && cur->i->childCount() &&
	     cur->y + ith > cy &&
	     cur->y + ih < cy + ch ) {
	    cur->i->enforceSortOrder();

	    QListViewItem * c = cur->i->childItem;
	    int y = cur->y + ih;

	    // if any of the children are not to be painted, skip them
	    // and invalidate topPixel
	    while ( c && y + c->totalHeight() <= cy ) {
		y += c->totalHeight();
		c = c->siblingItem;
		d->topPixel = cy + ch;
	    }

	    // push one child on the stack, if there is at least one
	    // needing to be painted
	    if ( c && y < cy+ch )
		stack.push( new QListViewPrivate::Pending( cur->l + 1,
							   y, c ) );
	}

	delete cur;
    }
}

/*! \property QListView::treeStepSize
    \brief the number of pixels a child is offset from its parent

  The default is 20 pixels.

  Of course, this property is only meaningful for hierarchical list
  views.
*/

int QListView::treeStepSize() const
{
    return d->levelWidth;
}

void QListView::setTreeStepSize( int size )
{
    if ( size != d->levelWidth ) {
	d->levelWidth = size;
	viewport()->repaint( FALSE );
    }
}

/*!  Inserts item \a i into the list view as a top-level item.  You do not
  need to call this unless you've called takeItem(\a i) or
  QListViewItem::takeItem(\a i) and need to reinsert \a i elsewhere.

  \sa QListViewItem::takeItem() takeItem()
*/

void QListView::insertItem( QListViewItem * i )
{
    if ( d->r ) // not for d->r itself
	d->r->insertItem( i );
}


/*!
  Removes and deletes all the items in this list view and triggers an
  update.

  \sa triggerUpdate()
*/

void QListView::clear()
{
    bool wasUpdatesEnabled = viewport()->isUpdatesEnabled();
    viewport()->setUpdatesEnabled( FALSE );
    setContentsPos( 0, 0 );
    viewport()->setUpdatesEnabled( wasUpdatesEnabled );
    bool block = signalsBlocked();
    blockSignals( TRUE );
    d->clearing = TRUE;
    clearSelection();
    if ( d->iterators ) {
	QListViewItemIterator *i = d->iterators->first();
	while ( i ) {
	    i->curr = 0;
	    i = d->iterators->next();
	}
    }

    if ( d->drawables )
	d->drawables->clear();
    delete d->dirtyItems;
    d->dirtyItems = 0;
    d->dirtyItemTimer->stop();

    d->focusItem = 0;
    d->selectAnchor = 0;

    // if it's down its downness makes no sense, so undown it
    d->buttonDown = FALSE;

    QListViewItem *c = (QListViewItem *)d->r->firstChild();
    QListViewItem *n;
    while( c ) {
	n = (QListViewItem *)c->nextSibling();
	delete c;
	c = n;
    }
    resizeContents( d->h->sizeHint().width(), contentsHeight() );
    delete d->r;
    d->r = 0;
    QListViewPrivate::Root * r = new QListViewPrivate::Root( this );
    r->is_root = TRUE;
    d->r = r;
    d->r->setSelectable( FALSE );
    blockSignals( block );
    triggerUpdate();
    d->clearing = FALSE;
}

/*!
  \reimp
*/

void QListView::setContentsPos( int x, int y )
{
    updateGeometries();
    QScrollView::setContentsPos( x, y );
}

/*! Adds a \a width pixels wide column with the column header \a label
  to \e this QListView, and returns the index of the new column.

  All columns apart from the first one are inserted to the right of the
  existing ones.

  If \a width is negative, the new column's \l WidthMode is set
  to Maximum instead of Manual.

  \sa setColumnText() setColumnWidth() setColumnWidthMode()
*/
int QListView::addColumn( const QString &label, int width )
{
    int c = d->h->addLabel( label, width );
    d->column.resize( c+1 );
    d->column.insert( c, new QListViewPrivate::Column );
    d->column[c]->wmode = width >=0 ? Manual : Maximum;
    updateGeometries();
    return c;
}

/*! \overload

  Adds a \a width pixels wide new column with the header \a label and
  \a iconset to \e this QListView, and returns the index of the
  column.

  If \a width is negative, the new column's \l WidthMode is set
  to Maximum,
  and to Manual otherwise.

  \sa setColumnText() setColumnWidth() setColumnWidthMode()
*/
int QListView::addColumn( const QIconSet& iconset, const QString &label, int width )
{
    int c = d->h->addLabel( iconset, label, width );
    d->column.resize( c+1 );
    d->column.insert( c, new QListViewPrivate::Column );
    d->column[c]->wmode = width >=0 ? Manual : Maximum;
    updateGeometries();
    return c;
}

/*! \property QListView::columns
    \brief the number of columns in this list view

  \sa addColumn(), removeColumn()
*/

int QListView::columns() const
{
    return d->column.count();
}

/*!
  Removes the column at position \a index.
*/

void QListView::removeColumn( int index )
{
    if ( index < 0 || index > (int)d->column.count() - 1 )
	return;

    if ( d->vci ) {
	QListViewPrivate::ViewColumnInfo *vi = d->vci, *prev = 0, *next = 0;
	for ( int i = 0; i < index; ++i ) {
	    if ( vi ) {
		prev = vi;
		vi = vi->next;
	    }
	}
	if ( vi ) {
	    next = vi->next;
	    if ( prev )
		prev->next = next;
	    vi->next = 0;
	    delete vi;
	    if ( index == 0 )
		d->vci = next;
	}
    }

    QListViewItemIterator it( this );
    for ( ; it.current(); ++it ) {
	QListViewPrivate::ItemColumnInfo *ci = (QListViewPrivate::ItemColumnInfo*)it.current()->columns;
	if ( ci ) {
	    QListViewPrivate::ItemColumnInfo *prev = 0, *next = 0;
	    for ( int i = 0; i < index; ++i ) {
		if ( ci ) {
		    prev = ci;
		    ci = ci->next;
		}
	    }
	    if ( ci ) {
		next = ci->next;
		if ( prev )
		    prev->next = next;
		ci->next = 0;
		delete ci;
		if ( index == 0 )
		    it.current()->columns = next;
	    }
	}
    }

    for ( int i = index; i < (int)d->column.count() - 1; ++i ) {
	d->column.take( i );
	d->column.insert( i, d->column[ i + 1 ] );
    }
    d->column.take( d->column.size() - 1 );
    d->column.resize( d->column.size() - 1 );

    d->h->removeLabel( index );

    updateGeometries();
    if ( d->column.count() == 0 )
	clear();
}

/*! Sets the heading of column \a column to \a label. The leftmost
  column is 0.

  \sa columnText()
*/
void QListView::setColumnText( int column, const QString &label )
{
    if ( column < d->h->count() ) {
	d->h->setLabel( column, label );
	updateGeometries();
    }
}

/*! \overload

  Sets the heading of column \a column to \a iconset and \a
  label.  The leftmost column is 0.

  \sa columnText()
*/
void QListView::setColumnText( int column, const QIconSet& iconset, const QString &label )
{
    if ( column < d->h->count() ) {
	d->h->setLabel( column, iconset, label );
	updateGeometries();
    }
}

/*! Sets the width of column \a column to \a w pixels.  Note that if the
  column has a WidthMode other than Manual, this width setting may be
  subsequently overridden.  The leftmost column is 0.

  \sa columnWidth()
*/
void QListView::setColumnWidth( int column, int w )
{
    if ( column < d->h->count() && d->h->sectionSize( column ) != w ) {
	d->h->resizeSection( column, w );
	viewport()->update();
    }
}


/*! Returns the text of column \a c.

  \sa setColumnText()
*/

QString QListView::columnText( int c ) const
{
    return d->h->label(c);
}

/*! Returns the width of column \a c.

  \sa setColumnWidth()
*/

int QListView::columnWidth( int c ) const
{
    int actual = d->h->mapToActual( c );
    return d->h->cellSize( actual );
}


/*! \enum QListView::WidthMode

  This enum type describes how the width of a column in the view
  changes.  The currently defined modes are:

  \value Manual the column width does not change automatically.

  \value Maximum  the column is automatically sized according to the
  widths of all items in the column.  (Note: The column never shrinks
  in this case.) This means the column is always resized to the
  width of the item with the largest width in the column.

  \sa setColumnWidth() setColumnWidthMode() columnWidth()
*/


/*!
  Sets column \a{c}'s width mode to \a mode.  The default depends
  on whether the width argument to addColumn was positive or negative.

  \sa QListViewItem::width()
*/

void QListView::setColumnWidthMode( int c, WidthMode mode )
{
    if ( c < d->h->count() )
	 d->column[c]->wmode = mode;
}


/*!
  Returns the WidthMode for column \a c.
  \sa setColumnWidthMode()
*/

QListView::WidthMode QListView::columnWidthMode( int c ) const
{
    if ( c < d->h->count() )
	return d->column[c]->wmode;
    else
	return Manual;
}


/*!
  Sets column \a{column}'s alignment to \a align.
  The alignment is ultimately passed to QListViewItem::paintCell()
  for each item in the view.

  \sa Qt::AlignmentFlags
*/

void QListView::setColumnAlignment( int column, int align )
{
    if ( column < 0 )
	return;
    if ( !d->vci )
	d->vci = new QListViewPrivate::ViewColumnInfo;
    QListViewPrivate::ViewColumnInfo * l = d->vci;
    while( column ) {
	if ( !l->next )
	    l->next = new QListViewPrivate::ViewColumnInfo;
	l = l->next;
	column--;
    }
    if ( l->align == align )
	return;
    l->align = align;
    triggerUpdate();
}


/*!
  Returns the alignment of column \a column.  The default
  is \c AlignAuto.

  \sa Qt::AlignmentFlags
*/

int QListView::columnAlignment( int column ) const
{
    if ( column < 0 || !d->vci )
	return AlignAuto;
    QListViewPrivate::ViewColumnInfo * l = d->vci;
    while( column ) {
	if ( !l->next )
	    l->next = new QListViewPrivate::ViewColumnInfo;
	l = l->next;
	column--;
    }
    return l ? l->align : AlignAuto;
}



/*! \reimp
 */
void QListView::show()
{
    // Reimplemented to setx the correct background mode and viewed
    // area size.
    if ( !isVisible() ) {
	reconfigureItems();
	updateGeometries();
    }
    QScrollView::show();
}


/*!  Updates the sizes of the viewport, header, scroll bars and so on.
  Don't call this directly; call triggerUpdate() instead.
*/

void QListView::updateContents()
{
    if ( d->updateHeader )
	header()->adjustHeaderSize();
    d->updateHeader = FALSE;
    if ( !isVisible() ) {
	// Not in response to a setText/setPixmap any more.
	d->useDoubleBuffer = FALSE;

	return;
    }
    if ( d && d->drawables ) {
	delete d->drawables;
	d->drawables = 0;
    }
    viewport()->setUpdatesEnabled( FALSE );
    updateGeometries();
    viewport()->setUpdatesEnabled( TRUE );
    viewport()->repaint( FALSE );
    d->useDoubleBuffer = FALSE;
}


void QListView::updateGeometries()
{
    int th = d->r->totalHeight();
    int tw = d->h->headerWidth();
    if ( d->h->offset() &&
	 tw < d->h->offset() + d->h->width() )
	horizontalScrollBar()->setValue( tw - QListView::d->h->width() );
#if 0
    if ( QApplication::reverseLayout() && d->h->offset() != horizontalScrollBar()->value() )
	horizontalScrollBar()->setValue( d->h->offset() );
#endif
    verticalScrollBar()->raise();
    resizeContents( tw, th );
    if ( d->h->isHidden() ) {
	setMargins( 0, 0, 0, 0 );
    } else {
	QSize hs( d->h->sizeHint() );
	setMargins( 0, hs.height(), 0, 0 );
	d->h->setGeometry( viewport()->x(), viewport()->y()-hs.height(),
			   visibleWidth(), hs.height() );
    }
}


/*! Updates the display when the section \a section has changed size
  from the old size, \a os, to the new size, \a ns.
*/

void QListView::handleSizeChange( int section, int os, int ns )
{
    bool upe = viewport()->isUpdatesEnabled();
    viewport()->setUpdatesEnabled( FALSE );
    int sx = horizontalScrollBar()->value();
    bool sv = horizontalScrollBar()->isVisible();
    updateGeometries();
    bool fullRepaint = d->fullRepaintOnComlumnChange || sx != horizontalScrollBar()->value()
		       || sv != horizontalScrollBar()->isVisible();
    d->fullRepaintOnComlumnChange = FALSE;
    viewport()->setUpdatesEnabled( upe );

    if ( fullRepaint ) {
	viewport()->repaint( FALSE );
	return;
    }

    int actual = d->h->mapToActual( section );
    int dx = ns - os;
    int left = d->h->cellPos( actual ) - contentsX() + d->h->cellSize( actual );
    if ( dx > 0 )
	left -= dx;
    if ( left < visibleWidth() )
	viewport()->scroll( dx, 0, QRect( left, 0, visibleWidth() - left, visibleHeight() ) );
    viewport()->repaint( left - 4 - d->ellipsisWidth, 0, 4 + d->ellipsisWidth,
			 visibleHeight(), FALSE ); // border between the items and ellipses width

    // map auto to left for now. Need to fix this once we support
    // reverse layout on the listview.
    int align = columnAlignment( section );
    if ( align == AlignAuto ) align = AlignLeft;
    if ( align != AlignAuto && align != AlignLeft )
	viewport()->repaint( d->h->cellPos( actual ) - contentsX(), 0,
			     d->h->cellSize( actual ), visibleHeight() );

    if ( currentItem() && currentItem()->renameBox ) {
	QRect r = itemRect( currentItem() );
	r = QRect( viewportToContents( r.topLeft() ), r.size() );
	r.setLeft( header()->sectionPos( currentItem()->renameCol ) );
	r.setWidth( header()->sectionSize( currentItem()->renameCol ) - 1 );
	if ( currentItem()->renameCol == 0 )
	    r.setLeft( r.left() + itemMargin() + ( currentItem()->depth() +
						   ( rootIsDecorated() ? 1 : 0 ) ) * treeStepSize() - 1 );
	if ( currentItem()->pixmap( currentItem()->renameCol ) )
	    r.setLeft( r.left() + currentItem()->pixmap( currentItem()->renameCol )->width() );
	if ( r.x() - contentsX() < 0 )
	    r.setX( contentsX() );
	if ( r.width() > visibleWidth() )
	    r.setWidth( visibleWidth() );
	addChild( currentItem()->renameBox, r.x(), r.y() );
	currentItem()->renameBox->resize( r.size() );
    }
}


/*!  Very smart internal slot that repaints \e only the items that need
  to be repainted.  Don't use this directly; call repaintItem()
  instead.
*/

void QListView::updateDirtyItems()
{
    if ( d->timer->isActive() || !d->dirtyItems )
	return;
    QRect ir;
    QPtrDictIterator<void> it( *(d->dirtyItems) );
    QListViewItem * i;
    while( (i = (QListViewItem *)(it.currentKey())) != 0 ) {
	++it;
	ir = ir.unite( itemRect(i) );
    }
    if ( !ir.isEmpty() )  {		      // rectangle to be repainted
	if ( ir.x() < 0 )
	    ir.moveBy( -ir.x(), 0 );
	viewport()->repaint( ir, FALSE );
    }
}


void QListView::makeVisible()
{
    if ( d->focusItem )
	ensureItemVisible( d->focusItem );
}


/*! Ensures that the header is correctly sized and positioned
  when the resize event \a e occurs.
*/

void QListView::resizeEvent( QResizeEvent *e )
{
    QScrollView::resizeEvent( e );
    d->fullRepaintOnComlumnChange = TRUE;
    d->h->resize( visibleWidth(), d->h->height() );
}

/*! \reimp */

void QListView::viewportResizeEvent( QResizeEvent *e )
{
    QScrollView::viewportResizeEvent( e );
    d->h->resize( visibleWidth(), d->h->height() );
    if ( resizeMode() != NoColumn && currentItem() && currentItem()->renameBox ) {
	QRect r = itemRect( currentItem() );
	r = QRect( viewportToContents( r.topLeft() ), r.size() );
	r.setLeft( header()->sectionPos( currentItem()->renameCol ) );
	r.setWidth( header()->sectionSize( currentItem()->renameCol ) - 1 );
	if ( currentItem()->renameCol == 0 )
	    r.setLeft( r.left() + itemMargin() + ( currentItem()->depth() +
						   ( rootIsDecorated() ? 1 : 0 ) ) * treeStepSize() - 1 );
	if ( currentItem()->pixmap( currentItem()->renameCol ) )
	    r.setLeft( r.left() + currentItem()->pixmap( currentItem()->renameCol )->width() );
	if ( r.x() - contentsX() < 0 )
	    r.setX( contentsX() );
	if ( r.width() > visibleWidth() )
	    r.setWidth( visibleWidth() );
	addChild( currentItem()->renameBox, r.x(), r.y() );
	currentItem()->renameBox->resize( r.size() );
    }
}

/*!  Triggers a size, geometry and content update during the next
  iteration of the event loop.  Ensures that there'll be
  just one update to avoid flicker.
*/

void QListView::triggerUpdate()
{
    if ( !isVisible() || !isUpdatesEnabled() ) {
	// Not in response to a setText/setPixmap any more.
	d->useDoubleBuffer = FALSE;

	return; // it will update when shown, or something.
    }

    d->timer->start( 0, TRUE );
}


/*! Redirects the event \a e relating to object \a o, for the viewport to
 mousePressEvent(), keyPressEvent() and friends.
*/

bool QListView::eventFilter( QObject * o, QEvent * e )
{
    if ( o == d->h &&
	 e->type() >= QEvent::MouseButtonPress &&
	 e->type() <= QEvent::MouseMove ) {
	QMouseEvent * me = (QMouseEvent *)e;
	QMouseEvent me2( me->type(),
			 QPoint( me->pos().x(),
				 me->pos().y() - d->h->height() ),
			 me->button(), me->state() );
	switch( me2.type() ) {
	case QEvent::MouseButtonDblClick:
	    if ( me2.button() == RightButton )
		return TRUE;
	    break;
	case QEvent::MouseMove:
	    if ( me2.state() & RightButton ) {
		viewportMouseMoveEvent( &me2 );
		return TRUE;
	    }
	    break;
	default:
	    break;
	}
    } else if ( o == viewport() ) {
	QFocusEvent * fe = (QFocusEvent *)e;

	switch( e->type() ) {
	case QEvent::FocusIn:
	    focusInEvent( fe );
	    return TRUE;
	case QEvent::FocusOut:
	    focusOutEvent( fe );
	    return TRUE;
	default:
	    // nothing
	    break;
	}
    } else if ( o->inherits( "QLineEdit" ) ) {
	if ( currentItem() && currentItem()->renameBox ) {
	    if ( e->type() == QEvent::KeyPress ) {
		QKeyEvent *ke = (QKeyEvent*)e;
		if ( ke->key() == Key_Return ||
		     ke->key() == Key_Enter ) {
		    currentItem()->okRename( currentItem()->renameCol );
		    return TRUE;
		} else if ( ke->key() == Key_Escape ) {
		    currentItem()->cancelRename( currentItem()->renameCol );
		    return TRUE;
		}
	    } else if ( e->type() == QEvent::FocusOut ) {
		if ( ( (QFocusEvent*)e )->reason() != QFocusEvent::Popup ) {
		    QCustomEvent *e = new QCustomEvent( 9999 );
		    QApplication::postEvent( o, e );
		    return TRUE;
		}
	    } else if ( e->type() == 9999 ) {
		if ( d->defRenameAction == Reject )
		    currentItem()->cancelRename( currentItem()->renameCol );
		else
		    currentItem()->okRename( currentItem()->renameCol );
		return TRUE;
	    }
	}
    } else if ( e->type() == QEvent::Hide && o->inherits( "QPopupMenu" ) ) {
	bool db = d->useDoubleBuffer;
	d->useDoubleBuffer = TRUE;
	viewport()->repaint( FALSE );
	d->useDoubleBuffer = db;
	o->removeEventFilter( this );
    }

    return QScrollView::eventFilter( o, e );
}


/*! Returns a pointer to the list view containing this item.
*/

QListView * QListViewItem::listView() const
{
    const QListViewItem* c = this;
    while ( c && !c->is_root )
	c = c->parentItem;
    if ( !c )
	return 0;
    return ((QListViewPrivate::Root*)c)->theListView();
}


/*!
  Returns the depth of this item.
*/
int QListViewItem::depth() const
{
    return parentItem ? parentItem->depth()+1 : -1; // -1 == the hidden root
}


/*!
  Returns a pointer to the item immediately above this item on the
  screen.  This is usually the item's closest older sibling, but it may
  also be its parent or its next older sibling's youngest child, or
  something else if anyoftheabove->height() returns 0.  Returns a null
  pointer if there is no item immediately above this item.

  This function assumes that all parents of this item are open
  (i.e. that this item is visible, or can be made visible by
  scrolling).

  \sa itemBelow() QListView::itemRect()
*/

QListViewItem * QListViewItem::itemAbove()
{
    if ( !parentItem )
	return 0;

    QListViewItem * c = parentItem;
    if ( c->childItem != this ) {
	c = c->childItem;
	while( c && c->siblingItem != this )
	    c = c->siblingItem;
	if ( !c )
	    return 0;
	while( c->isOpen() && c->childItem ) {
	    c = c->childItem;
	    while( c->siblingItem )
		c = c->siblingItem;		// assign c's sibling to c
	}
    }
    if ( c && ( !c->height() || !c->isEnabled() ) )
	return c->itemAbove();
    return c;
}


/*!
  Returns a pointer to the item immediately below this item on the
  screen.  This is usually the item's eldest child, but it may also be
  its next younger sibling, its parent's next younger sibling,
  grandparent's, etc., or something else if anyoftheabove->height()
  returns 0.  Returns a null pointer if there is no item immediately
  below this item.

  This function assumes that all parents of this item are open
  (i.e. that this item is visible or can be made visible by
  scrolling).

  \sa itemAbove() QListView::itemRect()
*/

QListViewItem * QListViewItem::itemBelow()
{
    QListViewItem * c = 0;
    if ( isOpen() && childItem ) {
	c = childItem;
    } else if ( siblingItem ) {
	c = siblingItem;
    } else if ( parentItem ) {
	c = this;
	do {
	    c = c->parentItem;
	} while( c->parentItem && !c->siblingItem );
	if ( c )
	    c = c->siblingItem;
    }
    if ( c && ( !c->height() || !c->isEnabled() ) )
	return c->itemBelow();
    return c;
}


/*! \fn bool QListViewItem::isOpen () const

  Returns TRUE if this list view item has children \e and they are
  potentially visible. Returns FALSE if the item has no children or
  they are hidden.

  \sa setOpen()
*/

/*!
  Returns a pointer to the first (top) child of this item, or a null
  pointer if this item has no children.

  Note that the children are not guaranteed to be sorted properly.
  QListView and QListViewItem try to postpone or avoid sorting to the
  greatest degree possible, in order to keep the user interface
  snappy.

  \sa nextSibling()
*/

QListViewItem* QListViewItem::firstChild() const
{
    enforceSortOrder();
    return childItem;
}


/*!
  Returns a pointer to the parent of this item, or a null pointer if this
  item has no parent.

  \sa firstChild(), nextSibling()
*/

QListViewItem* QListViewItem::parent() const
{
    if ( !parentItem || parentItem->is_root ) return 0;
    return parentItem;
}


/*! \fn QListViewItem* QListViewItem::nextSibling() const

  Returns a pointer to the sibling item below this item, or a
  null pointer if there is no sibling item after this item.

  Note that the siblings are not guaranteed to be sorted properly.
  QListView and QListViewItem try to postpone or avoid sorting to the
  greatest degree possible, in order to keep the user interface
  snappy.

  \sa firstChild()
*/

/*! \fn int QListViewItem::childCount () const

  Returns how many children this item has.
*/


/*!
  Returns the height of this item in pixels.  This does not include
  the height of any children; totalHeight() returns that.
*/
int QListViewItem::height() const
{
    QListViewItem * that = (QListViewItem *)this;
    if ( !that->configured ) {
	that->configured = TRUE;
	that->setup(); // ### virtual non-const function called in const
    }

    return visible ? ownHeight : 0;
}

/*!
  Call this function when the value of width() may have changed
  for column \a c.  Normally, you should call this if text(c) changes.
  Passing -1 for \a c indicates that all columns may have changed.
  For efficiency, you should do this if more than one
  call to widthChanged() is required.

  \sa width()
*/
void QListViewItem::widthChanged( int c ) const
{
    listView()->widthChanged( this, c );
}

/*! \fn void  QListView::dropped ( QDropEvent * e )

  This signal is emitted, when a drop event occurred onto the viewport
  (not onto an item).

  \a e gives you all information about the drop.
*/

/*! \fn void QListView::selectionChanged()

  This signal is emitted whenever the set of selected items has
  changed (normally before the screen update).  It is available both
  in Single selection and Multi selection mode but is most useful
  in Multi selection mode.

  Note that you may not delete any QListViewItem objects in slots
  connected to this signal.

  \sa setSelected() QListViewItem::setSelected()
*/


/*! \fn void QListView::pressed( QListViewItem *item )

  This signal is emitted whenever the user presses the mouse button
  in a list view.
  \a item is the pointer to the list view item on which the user pressed the
  mouse button, or 0 if the user didn't press the mouse on an item.

  Note that you may not delete any QListViewItem objects in slots
  connected to this signal.
*/

/*! \fn void QListView::pressed( QListViewItem *item, const QPoint &pnt, int c )

  \overload

  This signal is emitted whenever the user presses the mouse button
  in a list view.
  \a item is the pointer to the list view item on which the user pressed the
  mouse button, or 0 if the user didn't press the mouse on an item.
  \a pnt is the position of the mouse cursor, and \a c is the
  column where the mouse cursor was when the user pressed the mouse
  button.

  Note that you may not delete any QListViewItem objects in slots
  connected to this signal.
*/

/*! \fn void QListView::clicked( QListViewItem *item )

  This signal is emitted whenever the user clicks (mouse pressed \e and
  mouse released) in the list view. \a item is the pointer to the
  clicked list view item, or 0 if the user didn't click on an item.

  Note that you may not delete any QListViewItem objects in slots
  connected to this signal.
*/

/*! \fn void QListView::mouseButtonClicked(int button, QListViewItem * item, const QPoint & pos, int c)

  This signal is emitted whenever the user clicks (mouse pressed \e
  and mouse released) in the list view at position \a pos. \a button
  is the mouse button that the user pressed, \a item is the pointer to
  the clicked list view item or 0 if the user didn't click on an
  item. If \a item is not 0, \a c is the list view column into which
  the user pressed; if \a item is 0 \a{c}'s value is undefined.

  Note that you may not delete any QListViewItem objects in slots
  connected to this signal.
*/

/*! \fn void QListView::mouseButtonPressed(int button, QListViewItem * item, const QPoint & pos, int c)

  This signal is emitted whenever the user pressed the mouse button
  in the list view at position \a pos. \a button is the mouse button
  which the user pressed, \a item is the pointer to the pressed list
  view item or 0 if the user didn't press on an item. If \a item is
  not 0, \a c is the list view column into which the user pressed; if
  \a item is 0 \a{c}'s value is undefined.

  Note that you may not delete any QListViewItem objects in slots
  connected to this signal.
*/

/*! \fn void QListView::clicked( QListViewItem *item, const QPoint &pnt, int c )

  \overload

  This signal is emitted whenever the user clicks (mouse pressed \e
  and mouse released) in the list view. \a item is the pointer to
  the clicked list view item, or 0 if the user didn't click on an
  item. \a pnt is the position where the user has clicked. If \a item
  is not 0, \a c is the list view column into which the user pressed;
  if \a item is 0 \a{c}'s value is undefined.

  Note that you may not delete any QListViewItem objects in slots
  connected to this signal.
*/

/*! \fn void QListView::selectionChanged( QListViewItem * )

  \overload

  This signal is emitted whenever the selected item has changed in
  Single selection mode (normally after the screen update).  The
  argument is the newly selected item.

  The no argument overload of this signal is more useful in Multi
  selection mode.

  Note that you may not delete any QListViewItem objects in slots
  connected to this signal.

  \sa setSelected() QListViewItem::setSelected() currentChanged()
*/


/*! \fn void QListView::currentChanged( QListViewItem * )

  This signal is emitted whenever the current item has changed
  (normally after the screen update).  The current item is the item
  responsible for indicating keyboard focus.

  The argument is the newly current item, or 0 if the change was to
  make no item current.  This can happen, for example, if all items in
  the list view are deleted.

  Note that you may not delete any QListViewItem objects in slots
  connected to this signal.

  \sa setCurrentItem() currentItem()
*/


/*! \fn void QListView::expanded( QListViewItem *item )

  This signal is emitted when \a item has been expanded, i.e.
  when the children of \a item are shown.

  \sa setOpen() collapsed()
*/

/*! \fn void QListView::collapsed( QListViewItem *item )

  This signal is emitted when the \a item has been collapsed, i.e.
  when the children of \a item are hidden.

  \sa setOpen() expanded()
*/

/*! Processes the mouse move event \a e on behalf of the viewed widget.
*/
void QListView::contentsMousePressEvent( QMouseEvent * e )
{
    contentsMousePressEventEx( e );
}

void QListView::contentsMousePressEventEx( QMouseEvent * e )
{
    if ( !e )
	return;

    d->startEdit = TRUE;
    if ( currentItem() && currentItem()->renameBox ) {
	d->startEdit = FALSE;
	if ( d->defRenameAction == Reject )
	    currentItem()->cancelRename( currentItem()->renameCol );
	else
	    currentItem()->okRename( currentItem()->renameCol );
    }

    d->startDragItem = 0;
    d->dragStartPos = e->pos();
    QPoint vp = contentsToViewport( e->pos() );

    d->ignoreDoubleClick = FALSE;
    d->buttonDown = TRUE;

    QListViewItem * i = itemAt( vp );
    d->pressedEmptyArea = e->y() > contentsHeight();
    if ( i && !i->isEnabled() )
	return;
    if ( d->startEdit && i != currentItem() )
	d->startEdit = FALSE;
    QListViewItem *oldCurrent = currentItem();

    if ( !i ) {
	if ( !( e->state() & ControlButton ) )
	    clearSelection();
	goto emit_signals;
    } else {
	d->selectAnchor = i;
    }

    if ( (i->isExpandable() || i->childCount()) &&
	 d->h->mapToLogical( d->h->cellAt( vp.x() ) ) == 0 ) {
	int x1 = vp.x() +
		 d->h->offset() -
		 d->h->cellPos( d->h->mapToActual( 0 ) );
	QPtrListIterator<QListViewPrivate::DrawableItem> it( *(d->drawables) );
	while( it.current() && it.current()->i != i )
	    ++it;

	if ( it.current() ) {
	    x1 -= treeStepSize() * (it.current()->l - 1);
	    QStyle::SubControl ctrl =
		style().querySubControl( QStyle::CC_ListView,
					 this, QPoint(x1, e->pos().y()),
					 QStyleOption(i) );
	    if( ctrl == QStyle::SC_ListViewExpand) {
		if ( e->button() == LeftButton ) {
		    bool close = i->isOpen();
		    setOpen( i, !i->isOpen() );
		    qApp->processEvents();
		    if ( !d->focusItem ) {
			d->focusItem = i;
			repaintItem( d->focusItem );
			emit currentChanged( d->focusItem );
		    }
		    if ( close ) {
			bool newCurrent = FALSE;
			QListViewItem *ci = d->focusItem;
			while ( ci ) {
			    if ( ci->parent() && ci->parent() == i ) {
				newCurrent = TRUE;
				break;
			    }
			    ci = ci->parent();
			}
			if ( newCurrent ) {
			    setCurrentItem( i );
			}
		    }
		}
		d->buttonDown = FALSE;
		d->ignoreDoubleClick = TRUE;
		d->buttonDown = FALSE;
		return;
	    }
	}
    }

    d->select = d->selectionMode == Multi ? !i->isSelected() : TRUE;
    {// calculate activatedP
	activatedByClick = TRUE;
	QPoint topLeft = itemRect( i ).topLeft(); //### inefficient?
	activatedP = vp - topLeft;
	int xdepth = treeStepSize() * (i->depth() + (rootIsDecorated() ? 1 : 0))
		     + itemMargin();
	xdepth += d->h->sectionPos( d->h->mapToSection( 0 ) );
	activatedP.rx() -= xdepth;
    }
    i->activate();
    activatedByClick = FALSE;

    if ( i != d->focusItem )
	setCurrentItem( i );
    else
	repaintItem( i );

    d->pressedSelected = i && i->isSelected();

    if ( i->isSelectable() && selectionMode() != NoSelection ) {
	if ( selectionMode() == Single )
	    setSelected( i, TRUE );
	else if ( selectionMode() == Multi  )
	    setSelected( i, d->select );
	else if ( selectionMode() == Extended ) {
	    bool changed = TRUE;
	    if ( !(e->state() & (ControlButton | ShiftButton)) ) {
		if ( !i->isSelected() ) {
		    bool blocked = signalsBlocked();
		    blockSignals( TRUE );
		    clearSelection();
		    blockSignals( blocked );
		    i->setSelected( TRUE );
		    changed = TRUE;
		}
	    } else {
		if ( e->state() & ShiftButton )
		    d->pressedSelected = FALSE;
		if ( e->state() & ControlButton && i ) {
		    i->setSelected( !i->isSelected() );
		    changed = TRUE;
		    d->pressedSelected = FALSE;
		} else if ( !oldCurrent || !i || oldCurrent == i ) {
		    if ( (bool)i->selected != d->select ) {
			changed = TRUE;
			i->setSelected( d->select );
		    }
		} else {
		    bool down = oldCurrent->itemPos() < i->itemPos();
		    QListViewItemIterator lit( down ? oldCurrent : i );
		    for ( ;; ++lit ) {
			if ( !lit.current() ) {
			    triggerUpdate();
			    goto emit_signals;
			}
			if ( down && lit.current() == i ) {
			    if ( (bool)i->selected != d->select ) {
				i->setSelected( d->select );
				changed = TRUE;
			    }
			    triggerUpdate();
			    break;
			}
			if ( !down && lit.current() == oldCurrent ) {
			    oldCurrent->setSelected( d->select );
			    triggerUpdate();
			    break;
			}
			if ( (bool)lit.current()->selected != d->select ) {
			    lit.current()->setSelected( d->select );
			    changed = TRUE;
			}
		    }
		}
	    }
	    if ( changed )
		emit selectionChanged();
	}
    }

 emit_signals:

    if ( i && vp.x() + contentsX() < itemMargin() + ( i->depth() + ( rootIsDecorated() ? 1 : 0 ) ) * treeStepSize() )
	i = 0;
    d->pressedItem = i;

    int c = i ? d->h->mapToLogical( d->h->cellAt( vp.x() ) ) : -1;
    if ( !i || ( i && i->isEnabled() ) ) {
	emit pressed( i );
	emit pressed( i, viewport()->mapToGlobal( vp ), d->h->mapToLogical( c ) );
    }
    emit mouseButtonPressed( e->button(), i, viewport()->mapToGlobal( vp ), c );

    if ( e->button() == RightButton && i == d->pressedItem ) {
	if ( !i )
	    clearSelection();

	emit rightButtonPressed( i, viewport()->mapToGlobal( vp ), c );
    }
}

/*! \reimp
*/

void QListView::contentsContextMenuEvent( QContextMenuEvent *e )
{
    if ( receivers( SIGNAL(contextMenuRequested(QListViewItem *, const QPoint &, int)) ) )
	e->accept();
    if ( e->reason() == QContextMenuEvent::Keyboard ) {
	QListViewItem *item = currentItem();
	if ( item ) {
	    QRect r = itemRect( item );
	    QPoint p = r.topLeft();
	    if ( allColumnsShowFocus() )
		p += QPoint( width() / 2, ( r.height() / 2 )+ ( header()->isVisible() ? header()->height() : 0 ) );
	    else
		p += QPoint( columnWidth( 0 ) / 2, ( r.height() / 2 )+ ( header()->isVisible() ? header()->height() : 0 ) );
	    emit contextMenuRequested( item, mapToGlobal( p ), -1 );
	}
    } else {
	QPoint vp = contentsToViewport( e->pos() );
	QListViewItem * i = itemAt( vp );
	int c = i ? d->h->mapToLogical( d->h->cellAt( vp.x() ) ) : -1;
	emit contextMenuRequested( i, viewport()->mapToGlobal( vp ), c );
    }
}

/*! Processes the mouse move event \a e on behalf of the viewed widget.
*/
void QListView::contentsMouseReleaseEvent( QMouseEvent * e )
{
    d->startDragItem = 0;
    bool emitClicked = !d->pressedItem || d->buttonDown;
    d->buttonDown = FALSE;
    // delete and disconnect autoscroll timer, if we have one
    if ( d->scrollTimer ) {
	disconnect( d->scrollTimer, SIGNAL(timeout()),
		    this, SLOT(doAutoScroll()) );
	d->scrollTimer->stop();
	delete d->scrollTimer;
	d->scrollTimer = 0;
    }

    if ( !e )
	return;

    if ( d->selectionMode == Extended &&
	 d->focusItem == d->pressedItem &&
	 d->pressedSelected && d->focusItem &&
	 e->button() == LeftButton) {
	bool block = signalsBlocked();
	blockSignals( TRUE );
	clearSelection();
	blockSignals( block );
	d->focusItem->setSelected( TRUE );
	emit selectionChanged();
    }

    QPoint vp = contentsToViewport(e->pos());
    QListViewItem *i = itemAt( vp );
    if ( i && !i->isEnabled() )
	return;
    if ( i == d->pressedItem && i && i->isSelected() && e->button() == LeftButton && d->startEdit ) {
	QRect r = itemRect( currentItem() );
	r = QRect( viewportToContents( r.topLeft() ), r.size() );
	d->pressedColumn = header()->sectionAt(  e->pos().x() );
	r.setLeft( header()->sectionPos( d->pressedColumn ) );
	r.setWidth( header()->sectionSize( d->pressedColumn ) - 1 );
	if ( d->pressedColumn == 0 )
	    r.setLeft( r.left() + itemMargin() + ( currentItem()->depth() +
						   ( rootIsDecorated() ? 1 : 0 ) ) * treeStepSize() - 1 );
	if ( r.contains( e->pos() ) &&
	     !( e->state() & ( ShiftButton | ControlButton ) ) )
	    d->renameTimer->start( QApplication::doubleClickInterval(), TRUE );
    }
    if ( i && vp.x() + contentsX() < itemMargin() + ( i->depth() + ( rootIsDecorated() ? 1 : 0 ) ) * treeStepSize() )
	i = 0;
    emitClicked = emitClicked && d->pressedItem == i;
    d->pressedItem = 0;

    if ( emitClicked ) {
	if ( !i || ( i && i->isEnabled() ) ) {
	    emit clicked( i );
	    emit clicked( i, viewport()->mapToGlobal( vp ), d->h->mapToLogical( d->h->cellAt( vp.x() ) ) );
	}
	emit mouseButtonClicked( e->button(), i, viewport()->mapToGlobal( vp ),
				 i ? d->h->mapToLogical( d->h->cellAt( vp.x() ) ) : -1 );

	if ( e->button() == RightButton ) {
	    if ( !i ) {
		clearSelection();
		emit rightButtonClicked( 0, viewport()->mapToGlobal( vp ), -1 );
		return;
	    }

	    int c = d->h->mapToLogical( d->h->cellAt( vp.x() ) );
	    emit rightButtonClicked( i, viewport()->mapToGlobal( vp ), c );
	}
    }
}


/*! Processes the mouse double-click event \a e on behalf of the viewed widget.
*/
void QListView::contentsMouseDoubleClickEvent( QMouseEvent * e )
{
    d->renameTimer->stop();
    d->startEdit = FALSE;
    if ( !e || e->button() != LeftButton )
	return;

    // ensure that the following mouse moves and eventual release is
    // ignored.
    d->buttonDown = FALSE;

    if ( d->ignoreDoubleClick ) {
	d->ignoreDoubleClick = FALSE;
	return;
    }

    QPoint vp = contentsToViewport(e->pos());

    QListViewItem * i = itemAt( vp );

    if ( !i || !i->isEnabled() )
	return;

    if ( !i->isOpen() ) {
	if ( i->isExpandable() || i->childCount() )
	    setOpen( i, TRUE );
    } else {
	setOpen( i, FALSE );
    }

    emit doubleClicked( i );
}


/*! Processes the mouse move event \a e on behalf of the viewed widget.
*/
void QListView::contentsMouseMoveEvent( QMouseEvent * e )
{
    if ( !e )
	return;

    bool needAutoScroll = FALSE;

    QPoint vp = contentsToViewport(e->pos());

    QListViewItem * i = itemAt( vp );
    if ( i && !i->isEnabled() )
	return;
    if ( i != d->highlighted ) {
	if ( i ) {
	    emit onItem( i );
	} else {
	    emit onViewport();
	}
	d->highlighted = i;
    }

    if ( d->startDragItem )
	i = d->startDragItem;

    if ( !d->buttonDown ||
	 ( ( e->state() & LeftButton ) != LeftButton &&
	   ( e->state() & MidButton ) != MidButton &&
	   ( e->state() & RightButton ) != RightButton ) )
	return;

    if ( i && i == d->pressedItem &&
	 ( i->isSelected() || d->selectionMode == NoSelection ) &&
	 i->dragEnabled() ) {
	if ( !d->startDragItem ) {
	    setSelected( i, TRUE );
	    d->startDragItem = i;
	}
	if ( ( d->dragStartPos - e->pos() ).manhattanLength() > QApplication::startDragDistance() ) {
	    d->buttonDown = FALSE;
#ifndef QT_NO_DRAGANDDROP
	    startDrag();
#endif
	}
	return;
    }

    // check, if we need to scroll
    if ( vp.y() > visibleHeight() || vp.y() < 0 )
	needAutoScroll = TRUE;

    // if we need to scroll and no autoscroll timer is started,
    // connect the timer
    if ( needAutoScroll && !d->scrollTimer ) {
	d->scrollTimer = new QTimer( this );
	connect( d->scrollTimer, SIGNAL(timeout()),
		 this, SLOT(doAutoScroll()) );
	d->scrollTimer->start( 100, FALSE );
	// call it once manually
	doAutoScroll();
    }

    // if we don't need to autoscroll
    if ( !needAutoScroll ) {
	// if there is a autoscroll timer, delete it
	if ( d->scrollTimer ) {
	    disconnect( d->scrollTimer, SIGNAL(timeout()),
			this, SLOT(doAutoScroll()) );
	    d->scrollTimer->stop();
	    delete d->scrollTimer;
	    d->scrollTimer = 0;
	}
	// call this to select an item
	doAutoScroll();
    }
}


/*!  This slot handles auto-scrolling when the mouse button is pressed
and the mouse is outside the widget.
*/

void QListView::doAutoScroll()
{
    QPoint pos = QCursor::pos();
    pos = viewport()->mapFromGlobal( pos );

    if ( !d->focusItem || ( d->pressedEmptyArea && pos.y() > contentsHeight() ) )
	return;

    bool down = pos.y() > itemRect( d->focusItem ).y();

    int g = pos.y() + contentsY();

    if ( down && pos.y() > height()  )
	g = height() + contentsY();
    else if ( pos.y() < 0 )
	g = contentsY();

    QListViewItem *c = d->focusItem, *old = 0;
    if ( down ) {
	int y = itemRect( d->focusItem ).y() + contentsY();
	while( c && y + c->height() <= g ) {
	    y += c->height();
	    old = c;
	    c = c->itemBelow();
	}
	if ( !c && old )
	    c = old;
    } else {
	int y = itemRect( d->focusItem ).y() + contentsY();
	while( c && y >= g ) {
	    old = c;
	    c = c->itemAbove();
	    if ( c )
		y -= c->height();
	}
	if ( !c && old )
	    c = old;
    }

    if ( !c || c == d->focusItem )
	return;

    if ( d->focusItem ) {
	if ( d->selectionMode == Multi ) {
	    // also (de)select the ones in between
	    QListViewItem * b = d->focusItem;
	    bool down = ( itemPos( c ) > itemPos( b ) );
	    while( b && b != c ) {
		if ( b->isSelectable() )
		    setSelected( b, d->select );
		b = down ? b->itemBelow() : b->itemAbove();
	    }
	    if ( c->isSelectable() )
		setSelected( c, d->select );
	} else if ( d->selectionMode == Extended ) {
	    if ( d->focusItem == d->pressedItem && d->pressedSelected ) {
		d->pressedItem = 0;
		bool block = signalsBlocked();
		blockSignals( TRUE );
		clearSelection();
		blockSignals( block );
		c->setSelected( TRUE );
		emit selectionChanged();
	    } else {
		// also (de)select the ones in between
		QListViewItem * b = d->focusItem;
		bool down = ( itemPos( c ) > itemPos( b ) );
		while( b && b != c ) {
		    if ( b->isSelectable() )
			setSelected( b, d->select );
		    b = down ? b->itemBelow() : b->itemAbove();
		}
		if ( c->isSelectable() )
		    setSelected( c, d->select );
	    }
	}
    }

    setCurrentItem( c );
    d->visibleTimer->start( 1, TRUE );
}

/*!\reimp
*/

void QListView::focusInEvent( QFocusEvent *e )
{
    Q_UNUSED(e) // I need this to get rid of a Borland warning
    if ( d->focusItem )
	repaintItem( d->focusItem );
    else if ( firstChild() && e->reason() != QFocusEvent::Mouse ) {
	d->focusItem = firstChild();
	emit currentChanged( d->focusItem );
	repaintItem( d->focusItem );
    }
    if ( style().styleHint( QStyle::SH_ItemView_ChangeHighlightOnFocus, this ) ) {
	bool db = d->useDoubleBuffer;
	d->useDoubleBuffer = TRUE;
	viewport()->repaint( FALSE );
	d->useDoubleBuffer = db;
    }

    QRect mfrect = itemRect( d->focusItem );
    if ( mfrect.isValid() ) {
	if ( header() && header()->isVisible() )
	    setMicroFocusHint( mfrect.x(), mfrect.y()+header()->height(), mfrect.width(), mfrect.height(), FALSE );
	else
	    setMicroFocusHint( mfrect.x(), mfrect.y(), mfrect.width(), mfrect.height(), FALSE );
    }
}


/*!\reimp
*/

void QListView::focusOutEvent( QFocusEvent *e )
{
    Q_UNUSED(e) // I need this to get rid of a Borland warning
    if ( style().styleHint( QStyle::SH_ItemView_ChangeHighlightOnFocus, this ) ) {
	if ( e->reason() != QFocusEvent::Popup ) {
	    bool db = d->useDoubleBuffer;
	    d->useDoubleBuffer = TRUE;
	    viewport()->repaint( FALSE );
	    d->useDoubleBuffer = db;
	} else {
	    QWidget *widget = qApp->focusWidget();
	    if ( widget && widget->inherits( "QPopupMenu" ) )
		widget->installEventFilter( this );
	}
    }

    if ( d->focusItem )
	repaintItem( d->focusItem );
}


/*!\reimp
*/

void QListView::keyPressEvent( QKeyEvent * e )
{
    if ( currentItem() && currentItem()->renameBox )
	return;
    if ( !e || !firstChild() ) {
	e->ignore();
	return; // subclass bug
    }

    QListViewItem* oldCurrent = currentItem();
    if ( !oldCurrent ) {
	setCurrentItem( firstChild() );
	if ( d->selectionMode == Single )
	    setSelected( firstChild(), TRUE );
	return;
    }

    QListViewItem * i = currentItem();
    QListViewItem *old = i;

    if ( ( d->selectionMode == Multi || d->selectionMode == Extended ) && i->isSelectable() && e->ascii() == ' ' ) {
	setSelected( i, !i->isSelected() );
	d->currentPrefix.truncate( 0 );
	return;
    }

    QRect r( itemRect( i ) );
    QListViewItem * i2;

    bool singleStep = FALSE;
    bool selectCurrent = TRUE;

    switch( e->key() ) {
    case Key_Backspace:
    case Key_Delete:
	d->currentPrefix.truncate( 0 );
	break;
    case Key_Enter:
    case Key_Return:
	d->currentPrefix.truncate( 0 );
	if ( i && !i->isSelectable() && i->isEnabled() &&
	     ( i->childCount() || i->isExpandable() || i->isOpen() ) ) {
	    i->setOpen( !i->isOpen() );
	    return;
	}
	e->ignore();
	if ( currentItem() && !currentItem()->isEnabled() )
	    break;
	emit returnPressed( currentItem() );
	// do NOT accept.  QDialog.
	return;
    case Key_Down:
	selectCurrent = FALSE;
	i = i->itemBelow();
	d->currentPrefix.truncate( 0 );
	singleStep = TRUE;
	break;
    case Key_Up:
	selectCurrent = FALSE;
	i = i->itemAbove();
	d->currentPrefix.truncate( 0 );
	singleStep = TRUE;
	break;
    case Key_Home:
	selectCurrent = FALSE;
	i = firstChild();
	d->currentPrefix.truncate( 0 );
	break;
    case Key_End:
	selectCurrent = FALSE;
	i = firstChild();
	while ( i->nextSibling() )
	    i = i->nextSibling();
	while ( i->itemBelow() )
	    i = i->itemBelow();
	d->currentPrefix.truncate( 0 );
	break;
    case Key_Next:
	selectCurrent = FALSE;
	i2 = itemAt( QPoint( 0, visibleHeight()-1 ) );
	if ( i2 == i || !r.isValid() ||
	     visibleHeight() <= itemRect( i ).bottom() ) {
	    if ( i2 )
		i = i2;
	    int left = visibleHeight();
	    while( (i2 = i->itemBelow()) != 0 && left > i2->height() ) {
		left -= i2->height();
		i = i2;
	    }
	} else {
	    if ( !i2 ) {
		// list is shorter than the view, goto last item
		while( (i2 = i->itemBelow()) != 0 )
		    i = i2;
	    } else {
		i = i2;
	    }
	}
	d->currentPrefix.truncate( 0 );
	break;
    case Key_Prior:
	selectCurrent = FALSE;
	i2 = itemAt( QPoint( 0, 0 ) );
	if ( i == i2 || !r.isValid() || r.top() <= 0 ) {
	    if ( i2 )
		i = i2;
	    int left = visibleHeight();
	    while( (i2 = i->itemAbove()) != 0 && left > i2->height() ) {
		left -= i2->height();
		i = i2;
	    }
	} else {
	    i = i2;
	}
	d->currentPrefix.truncate( 0 );
	break;
    case Key_Plus:
	d->currentPrefix.truncate( 0 );
	if (  !i->isOpen() && (i->isExpandable() || i->childCount()) )
	    setOpen( i, TRUE );
	else
	    return;
	break;
    case Key_Right:
	d->currentPrefix.truncate( 0 );
	if ( i->isOpen() && i->childItem ) {
	    i = i->childItem;
	} else if ( !i->isOpen() && (i->isExpandable() || i->childCount()) ) {
	    setOpen( i, TRUE );
	} else if ( contentsX() + visibleWidth() < contentsWidth() ) {
	    horizontalScrollBar()->addLine();
	    return;
	} else {
	    return;
	}
	break;
    case Key_Minus:
	d->currentPrefix.truncate( 0 );
	if ( i->isOpen() )
	    setOpen( i, FALSE );
	else
	    return;
	break;
    case Key_Left:
	d->currentPrefix.truncate( 0 );
	if ( i->isOpen() ) {
	    setOpen( i, FALSE );
	} else if ( i->parentItem && i->parentItem != d->r ) {
	    i = i->parentItem;
	} else if ( contentsX() ) {
	    horizontalScrollBar()->subtractLine();
	    return;
	} else {
	    return;
	}
	break;
    case Key_Space:
	activatedByClick = FALSE;
	i->activate();
	d->currentPrefix.truncate( 0 );
	if ( currentItem() && !currentItem()->isEnabled() )
	    break;
	emit spacePressed( currentItem() );
	break;
    case Key_Escape:
	e->ignore(); // For QDialog
	return;
    case Key_F2:
	if ( currentItem() && currentItem()->renameEnabled( 0 ) )
	    currentItem()->startRename( 0 );
    default:
	if ( e->text().length() > 0 && e->text()[ 0 ].isPrint() ) {
	    selectCurrent = FALSE;
	    QString input( d->currentPrefix );
	    QListViewItem * keyItem = i;
	    QTime now( QTime::currentTime() );
	    bool tryFirst = TRUE;
	    while( keyItem ) {
		// try twice, first with the previous string and this char
		if ( d->currentPrefixTime.msecsTo( now ) <= 1500 )
		    input = input + e->text().lower();
		else
		    input = e->text().lower();
		if ( input.length() == 1 ) {
		    if ( keyItem->itemBelow() ) {
			keyItem = keyItem->itemBelow();
			tryFirst = TRUE;
		    } else {
			keyItem = firstChild();
			tryFirst = FALSE;
		    }
		}
		QString keyItemKey;
		QString prefix;
		while( keyItem ) {
		    // Look for text in column 0, then left-to-right
		    keyItemKey = keyItem->text(0);
		    for (int col = 0; col < d->h->count() && !keyItemKey; col++ )
			keyItemKey = keyItem->text( d->h->mapToLogical(col) );
		    if ( !keyItemKey.isEmpty() ) {
			prefix = keyItemKey;
			prefix.truncate( input.length() );
			prefix = prefix.lower();
			if ( prefix == input ) {
			    d->currentPrefix = input;
			    d->currentPrefixTime = now;
			    i = keyItem;
				// nonoptimal double-break...
			    keyItem = 0;
			    input.truncate( 0 );
			    tryFirst = FALSE;
			}
		    }
		    if ( keyItem )
			keyItem = keyItem->itemBelow();
		    if ( !keyItem && tryFirst ) {
			keyItem = firstChild();
			tryFirst = FALSE;
		    }
		}
		// then, if appropriate, with just this character
		if ( input.length() > 1 ) {
		    input.truncate(0);
		    keyItem = i;
		}
	    }
	} else {
	    d->currentPrefix.truncate( 0 );
	    if ( e->state() & ControlButton ) {
		d->currentPrefix = QString::null;
		switch ( e->key() ) {
		case Key_A:
		    selectAll( TRUE );
		    break;
		}
	    }
	    e->ignore();
	    return;
	}
    }

    if ( !i )
	return;

    if ( !( e->state() & ShiftButton ) || !d->selectAnchor )
	d->selectAnchor = i;

    setCurrentItem( i );
    if ( i->isSelectable() ) {
	handleItemChange( old, e->state() & ShiftButton, e->state() & ControlButton );
    }

    if ( d->focusItem && !d->focusItem->isSelected() && d->selectionMode == Single && selectCurrent )
	setSelected( d->focusItem, TRUE );

    if ( singleStep )
	d->visibleTimer->start( 1, TRUE );
    else
	ensureItemVisible( i );
}


/*!  Returns a pointer to the QListViewItem at \a viewPos.  Note
  that \a viewPos is in the coordinate system of viewport(), not in
  the list view's own, much larger, coordinate system.

  itemAt() returns 0 if there is no such item.

  Note that you also get the pointer to the item if \a viewPos points
  to the root decoration (see setRootIsDecorated()) of the item. To
  check whether or not \a viewPos is on the root decoration of the
  item, you can do something like this:

  \code
  QListViewItem *i = itemAt( p );
  if ( i ) {
      if ( p.x() > header()->cellPos( header()->mapToActual( 0 ) ) +
	     treeStepSize() * ( i->depth() + ( rootIsDecorated() ? 1 : 0) ) + itemMargin() ||
	     p.x() < header()->cellPos( header()->mapToActual( 0 ) ) ) {
	  ; // p is not on root decoration
      else
	  ; // p is on the root decoration
  }
  \endcode

  This might be interesting if you use this function to find out where the user
  clicked and if you want to start a drag (which you do not want to do if the
  user clicked onto the root decoration of an item).

  \sa itemPos() itemRect()
*/

QListViewItem * QListView::itemAt( const QPoint & viewPos ) const
{
    if ( viewPos.x() > contentsWidth() - contentsX() )
	return 0;

    if ( !d->drawables || d->drawables->isEmpty() )
	buildDrawableList();

    QListViewPrivate::DrawableItem * c = d->drawables->first();
    int g = viewPos.y() + contentsY();

    while( c && c->i && ( c->y + c->i->height() <= g ||
			  !c->i->isVisible() ||
			  c->i->parent() && !c->i->parent()->isVisible() ) )
	c = d->drawables->next();

    QListViewItem *i = (c && c->y <= g) ? c->i : 0;
    return i;
}


/*!  Returns the y-coordinate of \a item in the list view's
  coordinate system.  This function is normally much slower than
  itemAt() but it works for all items, whereas itemAt() normally works
  only for items on the screen.

  This is a thin wrapper around QListViewItem::itemPos().

  \sa itemAt() itemRect()
*/

int QListView::itemPos( const QListViewItem * item )
{
    return item ? item->itemPos() : 0;
}


/*! \property QListView::multiSelection
    \brief whether the list view is in multi-selection or single selection mode

  If you enable multi-selection mode, it is possible to specify
  whether or not this mode should be extended. Extended means that the
  user can select multiple items only when pressing the Shift or
  Ctrl key at the same time.

  The default selection mode is \c Single.

  \sa selectionMode()
*/

void QListView::setMultiSelection( bool enable )
{
    if ( !enable )
	d->selectionMode = QListView::Single;
    else if (  d->selectionMode != Multi && d->selectionMode != Extended )
	d->selectionMode = QListView::Multi;
}

bool QListView::isMultiSelection() const
{
    return d->selectionMode == QListView::Extended || d->selectionMode == QListView::Multi;
}

/*! \property QListView::selectionMode
    \brief the list view's multi-selection mode

    The mode can be \c Single (the default), \c Extended, \c Multi or
    \c NoSelection.

  \sa multiSelection
 */

void QListView::setSelectionMode( SelectionMode mode )
{
    if ( d->selectionMode == mode )
	return;    
    
    if ( ( d->selectionMode == Multi || d->selectionMode == Extended ) && 
	 ( mode == QListView::Single || mode == QListView::NoSelection ) ){
	clearSelection();
	if ( ( mode == QListView::Single ) && currentItem() )
	    currentItem()->selected = TRUE;
    }

    d->selectionMode = mode;
}

QListView::SelectionMode QListView::selectionMode() const
{
    return d->selectionMode;
}


/*!
    If \a selected is TRUE the \a item is selected; otherwise it is
    unselected.

  If the list view is in Single selection mode and \a selected is
  TRUE, the currently selected item is unselected and \a item is made
  current.  Unlike QListViewItem::setSelected(), this function updates
  the list view as necessary and emits the selectionChanged() signals.

  \sa isSelected() setMultiSelection() isMultiSelection() setCurrentItem()
*/

void QListView::setSelected( QListViewItem * item, bool selected )
{
    if ( !item || item->isSelected() == selected ||
	 !item->isSelectable() || selectionMode() == NoSelection )
	return;

    bool emitHighlighted = FALSE;
    if ( selectionMode() == Single && d->focusItem != item ) {
	QListViewItem *o = d->focusItem;
	if ( d->focusItem && d->focusItem->selected )
	    d->focusItem->setSelected( FALSE );
	d->focusItem = item;
	if ( o )
	    repaintItem( o );
	emitHighlighted = TRUE;
    }

    item->setSelected( selected );

    repaintItem( item );

    if ( d->selectionMode == Single && selected )
	emit selectionChanged( item );
    emit selectionChanged();

    if ( emitHighlighted )
	emit currentChanged( d->focusItem );
}


/*! Sets all items to be not selected, updates the list view as
necessary and emits the selectionChanged() signals.  Note that for
Multi selection list views this function needs to iterate over \e all
items.

\sa setSelected(), setMultiSelection()
*/

void QListView::clearSelection()
{
    selectAll( FALSE );
}

/*!
  If \a select is TRUE, all items get selected; otherwise all items
  get unselected. This works only in the selection modes Multi and
  Extended. In Single and NoSelection mode the selection of the
  current item is just set to \a select.
*/

void QListView::selectAll( bool select )
{
    if ( d->selectionMode == Multi || d->selectionMode == Extended ) {
	bool b = signalsBlocked();
	blockSignals( TRUE );
	bool anything = FALSE;
	QListViewItem * i = firstChild();
	QPtrStack<QListViewItem> s;
	while ( i ) {
	    if ( i->childItem )
		s.push( i->childItem );
	    if ( (bool)i->selected != select ) {
		i->setSelected( select );
		anything = TRUE;
		repaintItem( i );
	    }
	    i = i->siblingItem;
	    if ( !i )
		i = s.pop();
	}
	blockSignals( b );
	if ( anything )
	    emit selectionChanged();
    } else if ( d->focusItem ) {
	QListViewItem * i = d->focusItem;
	setSelected( i, select );
    }
}

/*!
  Inverts the selection. Works only in Multi and Extended selection mode.
*/

void QListView::invertSelection()
{
    if ( d->selectionMode == Single ||
	 d->selectionMode == NoSelection )
	return;

    bool b = signalsBlocked();
    blockSignals( TRUE );
    QListViewItemIterator it( this );
    for ( ; it.current(); ++it )
	it.current()->setSelected( !it.current()->isSelected() );
    blockSignals( b );
    emit selectionChanged();
    triggerUpdate();
}


/*!
    Returns TRUE if the list view item \a i is selected; otherwise
    returns FALSE.

  \sa QListViewItem::isSelected()
*/

bool QListView::isSelected( const QListViewItem * i ) const
{
    return i ? i->isSelected() : FALSE;
}


/*!  Returns a pointer to the selected item if the list view is in
single-selection mode and an item is selected.

If no items are selected or the list view is in multi-selection mode
this function returns 0.

\sa setSelected() setMultiSelection()
*/

QListViewItem * QListView::selectedItem() const
{
    if ( d->selectionMode != Single )
	return 0;
    if ( d->focusItem && d->focusItem->isSelected() )
	return d->focusItem;
    return 0;
}


/*!  Sets item \a i to be the current highlighted item and repaints
  appropriately.  This highlighted item is used for keyboard
  navigation and focus indication; it doesn't mean anything else, e.g.
  it is different from selection.

  \sa currentItem() setSelected()
*/

void QListView::setCurrentItem( QListViewItem * i )
{
    if ( !i || d->focusItem == i || !i->isEnabled() )
	return;

    if ( currentItem() && currentItem()->renameBox ) {
	if ( d->defRenameAction == Reject )
	    currentItem()->cancelRename( currentItem()->renameCol );
	else
	    currentItem()->okRename( currentItem()->renameCol );
    }

    QListViewItem * prev = d->focusItem;
    d->focusItem = i;

    QRect mfrect = itemRect( i );
    if ( mfrect.isValid() ) {
	if ( header() && header()->isVisible() )
	    setMicroFocusHint( mfrect.x(), mfrect.y()+header()->height(), mfrect.width(), mfrect.height(), FALSE );
	else
	    setMicroFocusHint( mfrect.x(), mfrect.y(), mfrect.width(), mfrect.height(), FALSE );
    }

    if ( i != prev) {
	if ( i && d->selectionMode == Single ) {
	    bool changed = FALSE;
	    if ( prev && prev->selected ) {
		changed = TRUE;
		prev->setSelected( FALSE );
	    }
	    if ( i && !i->selected && d->selectionMode != NoSelection && i->isSelectable() ) {
		i->setSelected( TRUE );
		changed = TRUE;
		emit selectionChanged( i );
	    }
	    if ( changed )
		emit selectionChanged();
	}

	if ( i )
	    repaintItem( i );
	if ( prev )
	    repaintItem( prev );
	emit currentChanged( i );
    }
}


/*!  Returns a pointer to the currently highlighted item, or 0 if
  there isn't one.

  \sa setCurrentItem()
*/

QListViewItem * QListView::currentItem() const
{
    return d ? d->focusItem : 0;
}


/*!  Returns the rectangle on the screen that item \a i occupies in
  viewport()'s coordinates, or an invalid rectangle if \a i is a null
  pointer or is not currently visible.

  The rectangle returned does not include any children of the
  rectangle (i.e. it uses QListViewItem::height(), rather than
  QListViewItem::totalHeight()).  If you want the rectangle to include
  children you can use something like this:

  \code
    QRect r( listView->itemRect( item ) );
    r.setHeight( (QCOORD)(QMIN( item->totalHeight(),
				listView->viewport->height() - r.y() ) ) )
  \endcode

  Note the way it avoids too-high rectangles.  totalHeight() can be
  much larger than the window system's coordinate system allows.

  itemRect() is comparatively slow.  It's best to call it only for
  items that are probably on-screen.
*/

QRect QListView::itemRect( const QListViewItem * i ) const
{
    if ( !d->drawables || d->drawables->isEmpty() )
	buildDrawableList();

    QListViewPrivate::DrawableItem * c = d->drawables->first();

    while( c && c->i && c->i != i )
	c = d->drawables->next();

    if ( c && c->i == i ) {
	int y = c->y - contentsY();
	if ( y + c->i->height() >= 0 &&
	     y < ((QListView *)this)->visibleHeight() ) {
	    QRect r( -contentsX(), y, d->h->width(), i->height() );
	    return r;
	}
    }

    return QRect( 0, 0, -1, -1 );
}


/*! \fn void QListView::doubleClicked( QListViewItem *item )

  This signal is emitted whenever an item is double-clicked.  It's
  emitted on the second button press, not the second button release.
  \a item is the list view item on which the user did the double-click.
*/


/*! \fn void QListView::returnPressed( QListViewItem * )

  This signal is emitted when Enter or Return is pressed.  The
  argument is the currentItem().
*/

/*! \fn void QListView::spacePressed( QListViewItem * )

  This signal is emitted when Space is pressed. The argument
  is currentItem().
*/


/*! Sets the list view to be sorted by \a column and
  in ascending order if \a ascending is TRUE or descending order if it
  is FALSE.

  If \a column is -1, sorting is disabled and the user cannot sort
  columns by clicking on the column headers.
*/

void QListView::setSorting( int column, bool ascending )
{
    if ( column == -1 )
	column = Unsorted;

    if ( d->sortcolumn == column && d->ascending == ascending )
	return;

    d->ascending = ascending;
    d->sortcolumn = column;
    if ( d->sortcolumn != Unsorted && d->sortIndicator )
	d->h->setSortIndicator( d->sortcolumn, d->ascending );
    else
	d->h->setSortIndicator( -1 );

    triggerUpdate();
}


/*! Determines the \a column the list view is sorted by.

  Sorting is triggered by choosing a header section.
*/

void QListView::changeSortColumn( int column )
{
    if ( d->sortcolumn != Unsorted ) {
	int lcol = d->h->mapToLogical( column );
	setSorting( lcol, d->sortcolumn == lcol ? !d->ascending : TRUE);
    }
}

/*!
  (Re)sorts the list view using the last sorting configuration (sort column
  and ascending/descending).
*/

void QListView::sort()
{
    if ( d->r )
	d->r->sort();
}

/*! \property QListView::itemMargin
    \brief the advisory item margin that list items may use

  The item margin defaults to one pixel and is the margin between the
  item's edges and the area where it draws its contents.
  QListViewItem::paintFocus() draws in the margin.

  \sa QListViewItem::paintCell()
*/

void QListView::setItemMargin( int m )
{
    if ( d->margin == m )
	return;
    d->margin = m;
    if ( isVisible() ) {
	if ( d->drawables )
	    d->drawables->clear();
	triggerUpdate();
    }
}

int QListView::itemMargin() const
{
    return d->margin;
}


/*! \fn void QListView::rightButtonClicked( QListViewItem *, const QPoint&, int )

  This signal is emitted when the right button is clicked (i.e. when
  it's released).  The arguments are the relevant QListViewItem (may
  be 0), the point in global coordinates and the relevant column (or -1 if the
  click was outside the list).
*/


/*! \fn void QListView::rightButtonPressed (QListViewItem *, const QPoint &, int)

  This signal is emitted when the right button is pressed.  Arguments
  are then the relevant QListViewItem (may be 0), the point in global
  coordinates and the relevant column (or -1 if the click was outside
  the list).
*/

/*!
  \fn void QListView::contextMenuRequested( QListViewItem *item, const QPoint & pos, int col )

  This signal is emitted when the user invokes a context menu with the
  right mouse button or with special system keys, with \a item being
  the item under the mouse cursor or the current item, respectively.

  \a pos is the position for the context menu in the global coordinate system.

  \a col is the column on which the user pressed, or -1 if the signal
  was triggered by a key event.
*/

/*!\reimp
*/
void QListView::styleChange( QStyle& old )
{
    d->sizeHint = QSize();		// invalidate size hint
    reconfigureItems();
    QScrollView::styleChange( old );
}


/*!  \reimp
*/
void QListView::setFont( const QFont & f )
{
    d->sizeHint = QSize();		// invalidate size hint
    QScrollView::setFont( f );
    reconfigureItems();
}


/*!\reimp
*/
void QListView::setPalette( const QPalette & p )
{
    d->h->setPalette( p );
    QScrollView::setPalette( p );
    reconfigureItems();
}


/*!  Ensures that setup() is called for all currently visible items,
  and that it will be called for currently invisible items as soon as
  their parents are opened.

  (A visible item, here, is an item whose parents are all open.  The
  item may happen to be offscreen.)

  \sa QListViewItem::setup()
*/

void QListView::reconfigureItems()
{
    d->fontMetricsHeight = fontMetrics().height();
    d->minLeftBearing = fontMetrics().minLeftBearing();
    d->minRightBearing = fontMetrics().minRightBearing();
    d->ellipsisWidth = fontMetrics().width( "..." ) * 2;
    d->r->setOpen( FALSE );
    d->r->configured = FALSE;
    d->r->setOpen( TRUE );
}

/*!
  Ensures the width mode of column \a c is updated according
  to the width of \a item.
*/

void QListView::widthChanged( const QListViewItem* item, int c )
{
    if ( c >= d->h->count() )
	return;


    QFontMetrics fm = fontMetrics();
    int col = c < 0 ? 0 : c;
    while ( col == c || ( c < 0 && col < d->h->count() ) ) {
	if ( d->column[col]->wmode == Maximum ) {
	    int w = item->width( fm, this, col );
	    if ( showSortIndicator() ) {
		QString title = header()->label( col );
		int tw = fm.width( title );
		tw += 40;
		w = QMAX( w, tw );
	    }
	    if ( col == 0 ) {
		int indent = treeStepSize() * item->depth();
		if ( rootIsDecorated() )
		    indent += treeStepSize();
		w += indent;
	    }
	    if ( w > columnWidth( col ) && !d->h->isStretchEnabled() ) {
		d->updateHeader = TRUE;
		setColumnWidth( col, w );
	    }
	}
	col++;
    }
}

/*! \property QListView::allColumnsShowFocus
    \brief whether items should show keyboard focus using all columns

  If this property is TRUE all columns will show focus and selection
  states, otherwise only column 0 will show focus.

  The default is FALSE.

  Setting this to TRUE if it's not necessary may cause noticeable
  flicker.
*/

void QListView::setAllColumnsShowFocus( bool enable )
{
    d->allColumnsShowFocus = enable;
}

bool QListView::allColumnsShowFocus() const
{
    return d->allColumnsShowFocus;
}


/*!  Returns the first item in this QListView.  You can use its \link
  QListViewItem::firstChild() firstChild() \endlink and \link
  QListViewItem::nextSibling() nextSibling() \endlink functions to
  traverse the entire tree of items.

  Returns 0 if there is no first item.

  \sa itemAt() QListViewItem::itemBelow() QListViewItem::itemAbove()
*/

QListViewItem * QListView::firstChild() const
{
    d->r->enforceSortOrder();
    return d->r->childItem;
}

/*! Returns the last item in the list view tree.

    Returns 0 if there are no items in the QListView.

    This function is slow.
*/

QListViewItem* QListView::lastItem() const
{
    QListViewItem* item = firstChild();
    if ( item ) {
	while ( item->nextSibling() || item->firstChild() ) {
	    if ( item->nextSibling() )
		item = item->nextSibling();
	    else
		item = item->firstChild();
	}
    }
    return item;
}

/*!  Repaints this item on the screen if it is currently visible. */

void QListViewItem::repaint() const
{
    listView()->repaintItem( this );
}


/*!  Repaints \a item on the screen if \a item is currently visible.
  Takes care to avoid multiple repaints. */

void QListView::repaintItem( const QListViewItem * item ) const
{
    if ( !item )
	return;
    d->dirtyItemTimer->start( 0, TRUE );
    if ( !d->dirtyItems )
	d->dirtyItems = new QPtrDict<void>();
    d->dirtyItems->replace( (void *)item, (void *)item );
}



/*!
  \class QCheckListItem
  \ingroup advanced
  \brief The QCheckListItem class provides checkable list view items.

  QCheckListItems are used in \l{QListView}s to provide
  \l{QListViewItem}s that are checkboxes, radio buttons or
  controllers.

  Checkbox and controller check list items may be inserted at any
  level in a list view. Radio button check list items must be children
  of a controller check list item.

  The item can be checked or unchecked with setOn(). Its type can be
  retrieved with type() and its text retrieved with text().

  \img qlistviewitems.png List View Items

  \sa QListViewItem QListView
*/

// ### obscenity is warranted.

/*! \enum QCheckListItem::Type

  This enum type specifies a QCheckListItem's type:

  \value RadioButton
  \value CheckBox
  \value Controller
*/

/* XPM */
static const char * const def_item_xpm[] = {
"16 16 4 1",
"	c None",
".	c #000000000000",
"X	c #FFFFFFFF0000",
"o	c #C71BC30BC71B",
"                ",
"                ",
" ..........     ",
" .XXXXXXXX.     ",
" .XXXXXXXX.oo   ",
" .XXXXXXXX.oo   ",
" .XXXXXXXX.oo   ",
" .XXXXXXXX.oo   ",
" .XXXXXXXX.oo   ",
" .XXXXXXXX.oo   ",
" .XXXXXXXX.oo   ",
" ..........oo   ",
"   oooooooooo   ",
"   oooooooooo   ",
"                ",
"                "};




static QPixmap *defaultIcon = 0;
static const int BoxSize = 16;

/*!
  Constructs a checkable item with parent \a parent, text \a text and type
  \a tt. Note that a RadioButton must be the child of a Controller,
  otherwise it will not toggle.
 */
QCheckListItem::QCheckListItem( QCheckListItem *parent, const QString &text,
				Type tt )
    : QListViewItem( parent, text, QString::null )
{
    myType = tt;
    init();
    if ( myType == RadioButton ) {
	if ( parent->type() != Controller )
	    qWarning( "QCheckListItem::QCheckListItem(), radio button must be "
		     "child of a controller" );
	else
	    exclusive = parent;
    }
}

/*!
  Constructs a checkable item with parent \a parent, text \a text and type
  \a tt. Note that this item must \e not be a RadioButton. Radio
  buttons must be children of a Controller.
 */
QCheckListItem::QCheckListItem( QListViewItem *parent, const QString &text,
				Type tt )
    : QListViewItem( parent, text, QString::null )
{
    myType = tt;
    if ( myType == RadioButton ) {
      qWarning( "QCheckListItem::QCheckListItem(), radio button must be "
	       "child of a QCheckListItem" );
    }
    init();
}

/*!
  Constructs a checkable item with parent \a parent, text \a text and type
  \a tt. Note that \a tt must \e not be RadioButton. Radio
  buttons must be children of a Controller.

 */
QCheckListItem::QCheckListItem( QListView *parent, const QString &text,
				Type tt )
    : QListViewItem( parent, text )
{
    myType = tt;
    if ( tt == RadioButton )
	qWarning( "QCheckListItem::QCheckListItem(), radio button must be "
		 "child of a QCheckListItem" );
    init();
}

int QCheckListItem::RTTI = 1;

/* \reimp */

int QCheckListItem::rtti() const
{
    return RTTI;
}

/*!
  Constructs a Controller item with parent \a parent, text \a text and pixmap
  \a p.
 */
QCheckListItem::QCheckListItem( QListView *parent, const QString &text,
				const QPixmap & p )
    : QListViewItem( parent, text )
{
    myType = Controller;
    setPixmap( 0, p );
    init();
}

/*!
  Constructs a Controller item with parent \a parent, text \a text and pixmap
  \a p.
 */
QCheckListItem::QCheckListItem( QListViewItem *parent, const QString &text,
				const QPixmap & p )
    : QListViewItem( parent, text )
{
    myType = Controller;
    setPixmap( 0, p );
    init();
}

void QCheckListItem::init()
{
    on = FALSE;
    if ( !defaultIcon )
	defaultIcon = new QPixmap( (const char **)def_item_xpm );
    if ( myType == Controller ) {
	if ( !pixmap(0) )
	    setPixmap( 0, *defaultIcon );
    }
    exclusive = 0;
}

/*!  Destroys the item, deleting all its children, freeing up all
  allocated resources.
*/
QCheckListItem::~QCheckListItem()
{
    if ( myType == RadioButton && exclusive && exclusive->exclusive == this )
	exclusive->turnOffChild();
    exclusive = 0; // so the children won't try to access us.
}

/*! \fn QCheckListItem::Type QCheckListItem::type() const

  Returns the type of this item.
*/

/*! \fn  bool QCheckListItem::isOn() const
  Returns TRUE if the item is toggled on; otherwise returns FALSE.
*/


/*! \fn QString QCheckListItem::text() const

  Returns the text of the item.
*/


/*!
  If this is a Controller that has RadioButton children, turn off the
  child that is on.
 */
void QCheckListItem::turnOffChild()
{
    if ( myType == Controller && exclusive )
	exclusive->setOn( FALSE );
}

/*!
  Toggle check box or set radio button to on.
 */
void QCheckListItem::activate()
{
    QListView * lv = listView();

    if ( lv && !lv->isEnabled() || !isEnabled() )
	return;

    QPoint pos;
    if ( activatedPos( pos ) ) {
	//ignore clicks outside the box
	QRect r;
	if ( parent() && parent()->rtti() == 1  &&
	     ((QCheckListItem*) parent())->type() == Controller )
	    r.setRect( 0, 2, BoxSize-3, BoxSize-3 );
	else
	    r.setRect( 3, 2, BoxSize-3, BoxSize-3 );
	// columns might have been swapped
	r.moveBy( lv->header()->sectionPos( 0 ), 0 );
	if ( lv && lv->columnAlignment( 0 ) == AlignCenter ) {
	    QFontMetrics fm( lv->font() );
	    r.moveBy( (lv->columnWidth( 0 ) - (BoxSize + fm.width( text() ))) / 2, 0 );
	}
	if ( !r.contains( pos ) )
	    return;
    }
    if ( myType == CheckBox ) {
	setOn( !on );
	ignoreDoubleClick();
    } else if ( myType == RadioButton ) {
	setOn( TRUE );
	ignoreDoubleClick();
    }
}

/*!
  Sets the button on if \a b is TRUE, otherwise sets it off. Maintains
  radio button exclusivity.
 */
void QCheckListItem::setOn( bool b  )
{
    if ( b == on )
	return;
    if ( myType == CheckBox ) {
	on = b;
	stateChange( b );
    } else if ( myType == RadioButton ) {
	if ( b ) {
	    if ( exclusive && exclusive->exclusive != this )
		exclusive->turnOffChild();
	    on = TRUE;
	    if ( exclusive )
		exclusive->exclusive = this;
	} else {
	    if ( exclusive && exclusive->exclusive == this )
		exclusive->exclusive = 0;
	    on = FALSE;
	}
	stateChange( b );
    }
    repaint();
}


/*!
  This virtual function is called when the item changes its on/off state.
 */
void QCheckListItem::stateChange( bool )
{
}

/*!
    \reimp

  Performs setup.
 */
void QCheckListItem::setup()
{
    QListViewItem::setup();
    int h = height();
    h = QMAX( BoxSize, h );
    h = QMAX( h, QApplication::globalStrut().height() );
    setHeight( h );
}

/*!
  \reimp
 */

int QCheckListItem::width( const QFontMetrics& fm, const QListView* lv, int column) const
{
    int r = QListViewItem::width( fm, lv, column );
    if ( column == 0 ) {
	r += lv->itemMargin();
	if ( myType == Controller && pixmap( 0 ) ) {
	    //	     r += 0;
	} else {
	    r += BoxSize + 4;
	}
    }
    return QMAX( r, QApplication::globalStrut().width() );
}

/*! Paints the item using the painter \a p and the color group \a cg.
    The item is in column \a column, has width \a width and is aligned
    \a align. (See Qt::AlignmentFlags for valid alignments.)
 */
void QCheckListItem::paintCell( QPainter * p, const QColorGroup & cg,
			       int column, int width, int align )
{
    if ( !p )
	return;

    QListView *lv = listView();
    if ( !lv )
	return;

    const BackgroundMode bgmode = lv->viewport()->backgroundMode();
    const QColorGroup::ColorRole crole = QPalette::backgroundRoleFromMode( bgmode );
    if ( cg.brush( crole ) != lv->colorGroup().brush( crole ) )
	p->fillRect( 0, 0, width, height(), cg.brush( crole ) );
    else
	lv->paintEmptyArea( p, QRect( 0, 0, width, height() ) );

    if ( column != 0 ) {
	// The rest is text, or for subclasses to change.
	QListViewItem::paintCell( p, cg, column, width, align );
	return;
    }

    int marg = lv->itemMargin();
    int r = marg;

    bool winStyle = lv->style().styleHint(QStyle::SH_GUIStyle) == WindowsStyle;
    QFontMetrics fm( lv->fontMetrics() );

    if ( myType == Controller ) {
	if ( !pixmap( 0 ) )
	    r += BoxSize + 4;
    } else {
	Q_ASSERT( lv ); //###
	//	QFontMetrics fm( lv->font() );
	//	int d = fm.height();
	bool parentControl = FALSE;
	if ( parent() && parent()->rtti() == 1  &&
	     ((QCheckListItem*) parent())->type() == Controller )
	    parentControl = TRUE;
	int x = 0;
	if ( !parentControl )
	    x += 3;
	if ( align == AlignCenter )
	    x = (width - BoxSize - fm.width(text()))/2;
	int y = (fm.height() + 2 + lv->itemMargin() - BoxSize) / 2;
	//	p->setPen( QPen( cg.text(), winStyle ? 2 : 1 ) );
	if ( myType == CheckBox ) {
	    if ( isEnabled() )
		p->setPen( QPen( cg.text(), 2 ) );
	    else
		p->setPen( QPen( lv->palette().color( QPalette::Disabled, QColorGroup::Text ), 2 ) );
	    if ( isSelected() && !lv->rootIsDecorated() && !parentControl ) {
		p->fillRect( 0, 0, x + marg + BoxSize + 4, height(),
			     cg.brush( QColorGroup::Highlight ) );
		if ( isEnabled() )
		    p->setPen( QPen( cg.highlightedText(), 2 ) );
	    }

	    p->drawRect( x+marg, y+2, BoxSize-4, BoxSize-4 );
	    /////////////////////
	    x++;
	    y++;
	    if ( on ) {
		QPointArray a( 7*2 );
		int i, xx, yy;
		xx = x+1+marg;
		yy = y+5;
		for ( i = 0; i < 3; i++ ) {
		    a.setPoint( 2*i,   xx, yy );
		    a.setPoint( 2*i+1, xx, yy+2 );
		    xx++; yy++;
		}
		yy -= 2;
		for ( i = 3; i < 7; i++ ) {
		    a.setPoint( 2*i,   xx, yy );
		    a.setPoint( 2*i+1, xx, yy+2 );
		    xx++; yy--;
		}
		p->drawLineSegments( a );
	    }
	    ////////////////////////
	} else { //radio button look
	    if ( winStyle ) {
#define QCOORDARRLEN(x) sizeof(x)/(sizeof(QCOORD)*2)

		static const QCOORD pts1[] = {		// dark lines
		    1,9, 1,8, 0,7, 0,4, 1,3, 1,2, 2,1, 3,1, 4,0, 7,0, 8,1, 9,1 };
		static const QCOORD pts2[] = {		// black lines
		    2,8, 1,7, 1,4, 2,3, 2,2, 3,2, 4,1, 7,1, 8,2, 9,2 };
		static const QCOORD pts3[] = {		// background lines
		    2,9, 3,9, 4,10, 7,10, 8,9, 9,9, 9,8, 10,7, 10,4, 9,3 };
		static const QCOORD pts4[] = {		// white lines
		    2,10, 3,10, 4,11, 7,11, 8,10, 9,10, 10,9, 10,8, 11,7,
		    11,4, 10,3, 10,2 };
		// static const QCOORD pts5[] = {		// inner fill
		//    4,2, 7,2, 9,4, 9,7, 7,9, 4,9, 2,7, 2,4 };
		//QPointArray a;
		//	p->eraseRect( x, y, w, h );

		if ( isEnabled() )
		    p->setPen( cg.text() );
		else
		    p->setPen( QPen( listView()->palette().color( QPalette::Disabled, QColorGroup::Text ) ) );
		QPointArray a( QCOORDARRLEN(pts1), pts1 );
		a.translate( x, y );
		//p->setPen( cg.dark() );
		p->drawPolyline( a );
		a.setPoints( QCOORDARRLEN(pts2), pts2 );
		a.translate( x, y );
		p->drawPolyline( a );
		a.setPoints( QCOORDARRLEN(pts3), pts3 );
		a.translate( x, y );
		//		p->setPen( black );
		p->drawPolyline( a );
		a.setPoints( QCOORDARRLEN(pts4), pts4 );
		a.translate( x, y );
		//			p->setPen( blue );
		p->drawPolyline( a );
		//		a.setPoints( QCOORDARRLEN(pts5), pts5 );
		//		a.translate( x, y );
		//	QColor fillColor = isDown() ? g.background() : g.base();
		//	p->setPen( fillColor );
		//	p->setBrush( fillColor );
		//	p->drawPolygon( a );
		if ( on     ) {
		    p->setPen( NoPen );
		    p->setBrush( cg.text() );
		    p->drawRect( x+5, y+4, 2, 4 );
		    p->drawRect( x+4, y+5, 4, 2 );
		}

	    } else { //motif
		if ( isEnabled() )
		    p->setPen( QPen( cg.text() ) );
		else
		    p->setPen( QPen( listView()->palette().color( QPalette::Disabled, QColorGroup::Text ) ) );
		QPointArray a;
		int cx = BoxSize/2 - 1;
		int cy = ( fm.height() + 2 + lv->itemMargin() )/2;
		int e = BoxSize/2 - 1;
		for ( int i = 0; i < 3; i++ ) { //penWidth 2 doesn't quite work
		    a.setPoints( 4, cx-e, cy, cx, cy-e,  cx+e, cy,  cx, cy+e );
		    p->drawPolygon( a );
		    e--;
		}
		if ( on ) {
		    if ( isEnabled() )
			p->setPen( QPen( cg.text()) );
		    else
			p->setPen( QPen( listView()->palette().color( QPalette::Disabled, QColorGroup::Text ) ) );
		    QBrush   saveBrush = p->brush();
		    p->setBrush( cg.text() );
		    e = e - 2;
		    a.setPoints( 4, cx-e, cy, cx, cy-e,  cx+e, cy,  cx, cy+e );
		    p->drawPolygon( a );
		    p->setBrush( saveBrush );
		}
	    }
	}
	r += BoxSize + 4;
    }

    if ( align == AlignCenter ) {
	QFontMetrics fm( lv->font() );
	r += (width - BoxSize - fm.width(text()))/2;
	// the text should not be centered when we have a centered checkbox
	align &= ~AlignCenter;
    }

    p->translate( r, 0 );
    p->setPen( QPen( cg.text() ) );
    QListViewItem::paintCell( p, cg, column, width - r, align );
}

/*! Draws the focus rectangle \a r using the color group \a cg on
  the painter \a p.
*/
void QCheckListItem::paintFocus( QPainter *p, const QColorGroup & cg,
				 const QRect & r )
{
    bool intersect = TRUE;
    QListView *lv = listView();
    if ( lv && lv->header()->mapToActual( 0 ) != 0 ) {
	int xdepth = lv->treeStepSize() * ( depth() + ( lv->rootIsDecorated() ? 1 : 0) ) + lv->itemMargin();
	int p = lv->header()->cellPos( lv->header()->mapToActual( 0 ) );
	xdepth += p;
	intersect = r.intersects( QRect( p, r.y(), xdepth - p + 1, r.height() ) );
    }
    bool parentControl = FALSE;
    if ( parent() && parent()->rtti() == 1  &&
	 ((QCheckListItem*) parent())->type() == Controller )
	parentControl = TRUE;
    if ( myType != Controller && intersect &&
	 (lv->rootIsDecorated() || myType == RadioButton ||
	  (myType == CheckBox && parentControl) ) ) {
	QRect rect;
	if ( lv->columnAlignment(0) == AlignCenter ) {
	    QFontMetrics fm( lv->font() );
	    int bx = (lv->columnWidth(0) - (BoxSize + fm.width(text())))/2 + BoxSize;
	    if ( bx < 0 ) bx = 0;
	    rect.setRect( r.x() + bx + 5, r.y(), r.width() - bx - 5,
			  r.height() );
	} else
	    rect.setRect( r.x() + BoxSize + 5, r.y(), r.width() - BoxSize - 5,
			  r.height() );
	QListViewItem::paintFocus(p, cg, rect);
    } else {
	QListViewItem::paintFocus(p, cg, r);
    }
}

/*!\reimp
*/
QSize QListView::sizeHint() const
{
    if ( ( isVisibleTo(0) || d->was_visible ) && d->sizeHint.isValid() ) {
	d->was_visible = TRUE;
	return d->sizeHint;
    }

    //    This is as wide as QHeader::sizeHint() recommends and tall
    //    enough for perhaps 10 items.

    constPolish();
    if ( !isVisible() &&
	 (!d->drawables || d->drawables->isEmpty()) )
	// force the column widths to sanity, if possible
	buildDrawableList();

    QSize s( d->h->sizeHint() );
    s.setWidth( s.width() + style().pixelMetric(QStyle::PM_ScrollBarExtent) );
    s += QSize(frameWidth()*2,frameWidth()*2);
    QListViewItem * l = d->r;
    while( l && !l->height() )
	l = l->childItem ? l->childItem : l->siblingItem;

    if ( l && l->height() )
	s.setHeight( s.height() + 10 * l->height() );
    else
	s.setHeight( s.height() + 140 );

    if ( s.width() > s.height() * 3 )
	s.setHeight( s.width() / 3 );
    else if ( s.width() *3 < s.height() )
	s.setHeight( s.width() * 3 );

    d->sizeHint = s;
    return d->sizeHint;
}


/*!
  \reimp
*/

QSize QListView::minimumSizeHint() const
{
    //###should be implemented
    return QScrollView::minimumSizeHint();
}



/*!  Sets \a item to be open if \a open is TRUE and \a item is
  expandable, and to be closed if \a open is FALSE.  Repaints
  accordingly.

  Does nothing if \a item is not expandable.

  \sa QListViewItem::setOpen() QListViewItem::setExpandable()
*/

void QListView::setOpen( QListViewItem * item, bool open )
{
    if ( !item ||
	item->isOpen() == open ||
	(open && !item->childCount() && !item->isExpandable()) )
	return;

    QListViewItem* nextParent = 0;
    if ( open && !(item->isOpen()) )
	nextParent = item->itemBelow();

    item->setOpen( open );

    if ( open ) {
	QListViewItem* lastChild;
	if ( !nextParent ) {
	    lastChild = item;
	    for ( int i = 0; i < item->childCount() && lastChild; ++i ) {
		lastChild = lastChild->itemBelow();
	    }
	} else {
	    lastChild = nextParent->itemAbove();
	}
	ensureItemVisible( lastChild );
	ensureItemVisible( item );
    }
    if ( d->drawables )
	d->drawables->clear();
    buildDrawableList();

    QListViewPrivate::DrawableItem * c = d->drawables->first();

    while( c && c->i && c->i != item )
	c = d->drawables->next();

    if ( c && c->i == item ) {
	d->dirtyItemTimer->start( 0, TRUE );
	if ( !d->dirtyItems )
	    d->dirtyItems = new QPtrDict<void>();
	while( c && c->i ) {
	    d->dirtyItems->insert( (void *)(c->i), (void *)(c->i) );
	    c = d->drawables->next();
	}
    }
}


/*! Identical to \a{item}->isOpen().  Provided for completeness.

  \sa setOpen()
*/

bool QListView::isOpen( const QListViewItem * item ) const
{
    return item->isOpen();
}


/*! \property QListView::rootIsDecorated
    \brief whether the list view show open/close signs on root items

  Open/close signs are small + or - symbols in windows style, or
  arrows in Motif style. The default is FALSE.
*/

void QListView::setRootIsDecorated( bool enable )
{
    if ( enable != (bool)d->rootIsExpandable ) {
	d->rootIsExpandable = enable;
	if ( isVisible() )
	    triggerUpdate();
    }
}

bool QListView::rootIsDecorated() const
{
    return d->rootIsExpandable;
}


/*!
    Ensures that item \a i is made visible, scrolling the list view
    vertically as required and also opening (expanding) any parent items
    if this is necessary to show the item.

  \sa itemRect() QScrollView::ensureVisible()
*/

void QListView::ensureItemVisible( const QListViewItem * i )
{
    if ( !i )
	return;

    QListViewItem *parent = i->parent();
    while ( parent ) {
	if ( !parent->isOpen() )
	    parent->setOpen( TRUE );
	parent = parent->parent();
    }

    if ( d->r->maybeTotalHeight < 0 )
	updateGeometries();
    int y = itemPos( i );
    int h = i->height();
    if ( isVisible() && y + h > contentsY() + visibleHeight() )
	setContentsPos( contentsX(), y - visibleHeight() + h );
    else if ( !isVisible() || y < contentsY() )
	setContentsPos( contentsX(), y );
}


/*! \fn QString QCheckListItem::text( int n ) const

  \reimp
*/

/*!  Returns a pointer to the QHeader object that manages this list
  view's columns.  Please don't modify the header behind the list
  view's back.

  You may safely call QHeader::setClickEnabled(),
  QHeader::setResizeEnabled(), QHeader::setMovingEnabled() and all the
  const QHeader functions.
*/

QHeader * QListView::header() const
{
    return d->h;
}


/*! \property QListView::childCount
    \brief the number of parentless (top level) QListViewItem objects in this QListView

  Represents the current number of parentless (top level)
  QListViewItem objects in this QListView, like
  QListViewItem::childCount() returns the number of child items for a
  QListViewItem.

  \sa QListViewItem::childCount()
*/

int QListView::childCount() const
{
    return d->r->childCount();
}


/*!  Moves this item to just after \a olderSibling.  \a olderSibling
  and this object must have the same parent.

  If you need to move an item in the hierarchy use takeItem() and
  insertItem().
*/

void QListViewItem::moveToJustAfter( QListViewItem * olderSibling )
{
    if ( parentItem && olderSibling &&
	 olderSibling->parentItem == parentItem && olderSibling != this ) {
	if ( parentItem->childItem == this ) {
	    parentItem->childItem = siblingItem;
	} else {
	    QListViewItem * i = parentItem->childItem;
	    while( i && i->siblingItem != this )
		i = i->siblingItem;
	    if ( i )
		i->siblingItem = siblingItem;
	}
	siblingItem = olderSibling->siblingItem;
	olderSibling->siblingItem = this;
    }
}

/*! Moves this item after the item \a after. This means it will get
the sibling exactly after the item \a after. To move an item in the
hierarchy, use takeItem() and insertItem().
*/

void QListViewItem::moveItem( QListViewItem *after )
{
    if ( !after || after == this )
	return;
    if ( parent() != after->parent() ) {
	if ( parentItem )
	    parentItem->takeItem( this );
	if ( after->parentItem ) {
	    int tmpLsc = after->parentItem->lsc;
	    after->parentItem->insertItem( this );
	    after->parentItem->lsc = tmpLsc;
	}
    }
    moveToJustAfter( after );
    QListView *lv = listView();
    if ( lv )
	lv->triggerUpdate();
}

/*!
  Recursively sorts items, from the root to this item.
  (enforceSortOrder() won't work the other way around, as
  documented.)
*/
void QListViewItem::enforceSortOrderBackToRoot()
{
    if ( parentItem ) {
	parentItem->enforceSortOrderBackToRoot();
	parentItem->enforceSortOrder();
    }
}

/*!  \reimp */
void QListView::showEvent( QShowEvent * )
{
    if ( d->drawables )
	d->drawables->clear();
    delete d->dirtyItems;
    d->dirtyItems = 0;
    d->dirtyItemTimer->stop();
    d->fullRepaintOnComlumnChange = TRUE;

    updateGeometries();
}


/*!  Returns the y coordinate of \e this item in the list view's
  coordinate system.  This function is normally much slower than
  QListView::itemAt(), but it works for all items whereas
  QListView::itemAt() normally only works for items on the screen.

  \sa QListView::itemAt() QListView::itemRect() QListView::itemPos()
*/

int QListViewItem::itemPos() const
{
    QPtrStack<QListViewItem> s;
    QListViewItem * i = (QListViewItem *)this;
    while( i ) {
	s.push( i );
	i = i->parentItem;
    }

    int a = 0;
    QListViewItem * p = 0;
    while( s.count() ) {
	i = s.pop();
	if ( p ) {
	    if ( !p->configured ) {
		p->configured = TRUE;
		p->setup(); // ### virtual non-const function called in const
	    }
	    a += p->height();
	    QListViewItem * s = p->firstChild();
	    while( s && s != i ) {
		a += s->totalHeight();
		s = s->nextSibling();
	    }
	}
	p = i;
    }
    return a;
}


/*!
  \fn void QListView::removeItem( QListViewItem * )
  \obsolete

  This function has been renamed takeItem().
*/

/*!  Removes item \a i from the list view; \a i must be a top-level item.
  The warnings regarding QListViewItem::takeItem() apply to this
  function, too.

  \sa insertItem()
*/
void QListView::takeItem( QListViewItem * i )
{
    d->r->takeItem( i );
}

#ifndef QT_NO_DRAGANDDROP

/*! \reimp */

void QListView::contentsDragEnterEvent( QDragEnterEvent *e )
{
    d->oldFocusItem = d->focusItem;
    QListViewItem *i = d->focusItem;
    d->focusItem = itemAt( contentsToViewport( e->pos() ) );
    if ( i )
	i->repaint();
    if ( d->focusItem )
	d->focusItem->repaint();
    e->accept();
}

/*! \reimp */

void QListView::contentsDragMoveEvent( QDragMoveEvent *e )
{
    QListViewItem *i = d->focusItem;
    d->focusItem = itemAt( contentsToViewport( e->pos() ) );
    if ( i )
	i->repaint();
    if ( d->focusItem )
	d->focusItem->repaint();
    e->accept();
}

/*! \reimp */

void QListView::contentsDragLeaveEvent( QDragLeaveEvent * )
{
    setCurrentItem( d->oldFocusItem );
    d->oldFocusItem = 0;
}

/*! \reimp */

void QListView::contentsDropEvent( QDropEvent *e )
{
    setCurrentItem( d->oldFocusItem );
    QListViewItem *i = itemAt( contentsToViewport( e->pos() ) );
    if ( i )
	i->dropped( e );
    else
	emit dropped( e );
}

/*!
    If the user presses the mouse on an item and starts moving the
    mouse, and the items allow dragging (see
    QListViewItem::setDragEnabled()), this function is called to get a
    drag object and a drag is started unless dragObject() returns 0.

  By default this function returns 0. You should reimplement it and
  create a QDragObject depending on the selected items.
*/

QDragObject *QListView::dragObject()
{
    return 0;
}

/*! Starts a drag. */

void QListView::startDrag()
{
    if ( !d->startDragItem )
	return;

    d->startDragItem = 0;
    d->buttonDown = FALSE;

    QDragObject *drag = dragObject();
    if ( !drag )
	return;

    drag->drag();
}

#endif // QT_NO_DRAGANDDROP

/*! \property QListView::defaultRenameAction
    \brief whether the list view accepts the rename operation by default

    If this property is Accept, and the user renames an item and the
    editor looses focus (without the user pressing Enter), the item
    will still be renamed. If the property's value is Reject, the item
    will not be renamed unless the user presses Enter. The default is
    Reject.
*/

void QListView::setDefaultRenameAction( RenameAction a )
{
    d->defRenameAction = a;
}

QListView::RenameAction QListView::defaultRenameAction() const
{
    return d->defRenameAction;
}

/*! Returns whether currently an item of the listview is being renamed
  */

bool QListView::isRenaming() const
{
    return currentItem() && currentItem()->renameBox;
}

/**********************************************************************
 *
 * Class QListViewItemIterator
 *
 **********************************************************************/


/*! \class QListViewItemIterator
  \ingroup advanced

  \brief The QListViewItemIterator class provides an iterator for collections of QListViewItems.

  Construct an instance of a QListViewItemIterator, with either a
  QListView* or a QListViewItem* as argument, to operate on the tree
  of QListViewItems.

  A QListViewItemIterator iterates over all items of a list view. This
  means that it always makes the first child of the current item the new
  current item. If there is no child, the next sibling becomes the new
  current item; and if there is no next sibling, the next sibling of
  the parent becomes current.

  The following example function gets a list of all the items that
  have been selected by the user, storing pointers to the items in a
  QPtrList:
  \code
    QPtrList<QListViewItem> lst;
    QListViewItemIterator it( lv );
    while ( it.current() != 0 ) {
	if ( it.current()->isSelected() )
	    lst.append( it.current() );
	++it;
    }
  \endcode

    A QListViewItemIterator provides a convenient and easy way to
    traverse a hierarchical QListView.

  Multiple QListViewItemIterators can operate on the tree of
  QListViewItems.  A QListView knows about all iterators
  operating on its QListViewItems.  So when a QListViewItem gets
  removed all iterators that point to this item are updated and point
  to the following item.

  \sa QListView, QListViewItem
*/

/*! Constructs an empty iterator. */

QListViewItemIterator::QListViewItemIterator()
    : curr( 0 ), listView( 0 )
{
}

/*! Constructs an iterator for the QListView of the \a item. The
  current iterator item is set to point to the \a item.
*/

QListViewItemIterator::QListViewItemIterator( QListViewItem *item )
    : curr( item ), listView( 0 )
{
    if ( item ) {
	item->enforceSortOrderBackToRoot();
	listView = item->listView();
    }
    addToListView();
}

/*! Constructs an iterator for the same QListView as \a it. The
  current iterator item is set to point on the current item of \a it.
*/

QListViewItemIterator::QListViewItemIterator( const QListViewItemIterator& it )
    : curr( it.curr ), listView( it.listView )
{
    addToListView();
}

/*! Constructs an iterator for the QListView \a lv. The current
  iterator item is set to point on the first child (QListViewItem)
  of \a lv.
*/

QListViewItemIterator::QListViewItemIterator( QListView *lv )
    : curr( lv->firstChild() ), listView( lv )
{
    addToListView();
}

/*! Assignment. Makes a copy of \a it and returns a reference to its
  iterator.
*/

QListViewItemIterator &QListViewItemIterator::operator=( const QListViewItemIterator &it )
{
    if ( listView ) {
	if ( listView->d->iterators->removeRef( this ) ) {
	    if ( listView->d->iterators->count() == 0 ) {
		delete listView->d->iterators;
		listView->d->iterators = 0;
	    }
	}
    }

    listView = it.listView;
    addToListView();
    curr = it.curr;

    return *this;
}

/*! Destroys the iterator.
*/

QListViewItemIterator::~QListViewItemIterator()
{
    if ( listView ) {
	if ( listView->d->iterators->removeRef( this ) ) {
	    if ( listView->d->iterators->count() == 0 ) {
		delete listView->d->iterators;
		listView->d->iterators = 0;
	    }
	}
    }
}

/*! Prefix ++ makes the next item in the QListViewItem tree of the
  QListView of the iterator the current item and returns it. If the
  current item was the last item in the QListView or null, null is
  returned.
*/

QListViewItemIterator &QListViewItemIterator::operator++()
{
    if ( !curr )
	return *this;

    QListViewItem *item = curr->firstChild();
    if ( !item ) {
	while ( (item = curr->nextSibling()) == 0 ) {
	    curr = curr->parent();
	    if ( curr == 0 )
		break;
	}
    }
    curr = item;
    return *this;
}

/*! \overload

  Postfix ++ makes the next item in the QListViewItem tree of the
  QListView of the iterator the current item and returns the item
  which was previously current.
*/

const QListViewItemIterator QListViewItemIterator::operator++( int )
{
    QListViewItemIterator oldValue = *this;
    ++( *this );
    return oldValue;
}

/*!
  Sets the current item to the item \a j positions after the current
  item in the QListViewItem hierarchy. If this item is beyond the last
  item, the current item is set to null.

  The new current item (or null, if the new current item is null) is returned.
*/

QListViewItemIterator &QListViewItemIterator::operator+=( int j )
{
    while ( curr && j-- )
	++( *this );

    return *this;
}

/*!
  Prefix -- makes the previous item in the QListViewItem tree of the
  QListView of the iterator the current item and returns it. If the
  current item was the last first in the QListView or null, null is
  returned.
*/

QListViewItemIterator &QListViewItemIterator::operator--()
{
    if ( !curr )
	return *this;

    if ( !curr->parent() ) {
	// we are in the first depth
       if ( curr->listView() ) {
	    if ( curr->listView()->firstChild() != curr ) {
		// go the previous sibling
		QListViewItem *i = curr->listView()->firstChild();
		while ( i && i->siblingItem != curr )
		    i = i->siblingItem;

		curr = i;

		if ( i && i->firstChild() ) {
		    // go to the last child of this item
		    QListViewItemIterator it( curr->firstChild() );
		    for ( ; it.current() && it.current()->parent(); ++it )
			curr = it.current();
		}

		return *this;
	    } else {
		//we are already the first child of the list view, so it's over
		curr = 0;
		return *this;
	    }
	} else
	    return *this;
    } else {
	QListViewItem *parent = curr->parent();

	if ( curr != parent->firstChild() ) {
	    // go to the previous sibling
	    QListViewItem *i = parent->firstChild();
	    while ( i && i->siblingItem != curr )
		i = i->siblingItem;

	    curr = i;

	    if ( i && i->firstChild() ) {
		// go to the last child of this item
		QListViewItemIterator it( curr->firstChild() );
		for ( ; it.current() && it.current()->parent() != parent; ++it )
		    curr = it.current();
	    }

	    return *this;
	} else {
	    // make our parent the current item
	    curr = parent;
	    return *this;
	}
    }
}

/*! \overload

  Postfix -- makes the previous item in the QListViewItem tree of
  the QListView of the iterator the current item and returns the item.
*/

const QListViewItemIterator QListViewItemIterator::operator--( int )
{
    QListViewItemIterator oldValue = *this;
    --( *this );
    return oldValue;
}

/*! Sets the current item to the item \a j positions before the
  current item in the QListViewItem hierarchy. If this item is before
  the first item, the current item is set to null.  The new current
  item (or null, if the new current item is null) is returned.
*/

QListViewItemIterator &QListViewItemIterator::operator-=( int j )
{
    while ( curr && j-- )
	--( *this );

    return *this;
}

/*! Returns a pointer to the current item of the iterator.
*/

QListViewItem *QListViewItemIterator::current() const
{
    return curr;
}

/*! Adds the iterator to the list of iterators of the iterator's QListViewItem.
*/

void QListViewItemIterator::addToListView()
{
    if ( listView ) {
	if ( !listView->d->iterators ) {
	    listView->d->iterators = new QPtrList<QListViewItemIterator>;
	    Q_CHECK_PTR( listView->d->iterators );
	}
	listView->d->iterators->append( this );
    }
}

/*!
  This function is called to notify the iterator that the current item
  has been deleted, and sets the current item point to another (valid)
  item or null.
*/

void QListViewItemIterator::currentRemoved()
{
    if ( !curr ) return;

    if ( curr->parent() )
	curr = curr->parent();
    else if ( curr->nextSibling() )
	curr = curr->nextSibling();
    else if ( listView && listView->firstChild() &&
	      listView->firstChild() != curr )
	curr = listView->firstChild();
    else
	curr = 0;
}

void QListView::handleItemChange( QListViewItem *old, bool shift, bool control )
{
    if ( d->selectionMode == Single ) {
	// nothing
    } else if ( d->selectionMode == Extended ) {
	if ( control ) {
	    // nothing
	} else if ( shift ) {
	    selectRange( d->selectAnchor ? d->selectAnchor : old,
			 d->focusItem, FALSE, TRUE, d->selectAnchor ? TRUE : FALSE );
	} else {
	    bool block = signalsBlocked();
	    blockSignals( TRUE );
	    selectAll( FALSE );
	    blockSignals( block );
	    setSelected( d->focusItem, TRUE );
	}
    } else if ( d->selectionMode == Multi ) {
	if ( shift )
	    selectRange( old, d->focusItem, TRUE, FALSE );
    }
}

void QListView::startRename()
{
    if ( !currentItem() )
	return;
    currentItem()->startRename( d->pressedColumn );
    d->buttonDown = FALSE;
}

void QListView::selectRange( QListViewItem *from, QListViewItem *to, bool invert, bool includeFirst, bool clearSel )
{
    if ( !from || !to )
	return;
    bool swap = FALSE;
    if ( to == from->itemAbove() )
	swap = TRUE;
    if ( !swap && from != to && from != to->itemAbove() ) {
	QListViewItemIterator it( from );
	bool found = FALSE;
	for ( ; it.current(); ++it ) {
	    if ( it.current() == to ) {
		found = TRUE;
		break;
	    }
	}
	if ( !found )
	    swap = TRUE;
    }
    if ( swap ) {
	QListViewItem *i = from;
	from = to;
	to = i;
	if ( !includeFirst )
	    to = to->itemAbove();
    } else {
	if ( !includeFirst )
	    from = from->itemBelow();
    }

    bool changed = FALSE;
    if ( clearSel ) {
	QListViewItemIterator it( firstChild() );
	for ( ; it.current(); ++it ) {
	    if ( it.current()->selected ) {
		it.current()->setSelected( FALSE );
		changed = TRUE;
		repaintItem( it.current() );
	    }
	}
	it = QListViewItemIterator( to );
	for ( ; it.current(); ++it ) {
	    if ( it.current()->selected ) {
		it.current()->setSelected( FALSE );
		changed = TRUE;
		repaintItem( it.current() );
	    }
	}
    }

    for ( QListViewItem *i = from; i; i = i->itemBelow() ) {
	if ( !invert ) {
	    if ( !i->selected && i->isSelectable() ) {
		i->setSelected( TRUE );
		changed = TRUE;
		repaintItem( i );
	    }
	} else {
	    bool sel = !i->selected;
	    if ( (bool)i->selected != sel && sel && i->isSelectable() || !sel ) {
		i->setSelected( sel );
		changed = TRUE;
		repaintItem( i );
	    }
	}
	if ( i == to )
	    break;
    }
    if ( changed )
	emit selectionChanged();
}

/*!
  Finds the first list view item in column \a column, that matches \a
  text and returns the item, or returns 0 of no such item could be
  found. Pass OR-ed together \l Qt::StringComparisonMode values in the
  \a compare flag, to control how the matching is performed. The
  default comparison mode is case-sensitive, exact match.
*/

QListViewItem *QListView::findItem( const QString& text, int column,
				    ComparisonFlags compare ) const
{
    if ( text.isEmpty() )
	return 0;

    QString itmtxt;
    QString comtxt = text;
    if ( !(compare & CaseSensitive) )
	comtxt = comtxt.lower();

    QListViewItemIterator it( d->focusItem );
    QListViewItem *sentinel = 0;
    QListViewItem *item;

    for ( int pass = 0; pass < 2; pass++ ) {
	while ( (item = it.current()) != sentinel ) {
	    itmtxt = item->text( column );
	    if ( !(compare & CaseSensitive) )
		itmtxt = itmtxt.lower();

	    if ( compare & BeginsWith ) {
		if ( itmtxt.startsWith( comtxt ) )
		    return item;
	    } else if ( compare & EndsWith ) {
		if ( itmtxt.endsWith( comtxt ) )
		    return item;
	    } else if ( compare & Contains ) {
		if ( itmtxt.contains( comtxt ) )
		    return item;
	    } else { /* ExactMatch */
		if ( itmtxt == comtxt )
		    return item;
	    }
	    ++it;
	}

	if ( !d->focusItem )
	    break;
	it = QListViewItemIterator( firstChild() );
	sentinel = d->focusItem;
    }
    return 0;
}

/*! \reimp */
void QListView::windowActivationChange( bool )
{
    if ( !isVisible() )
	return;

    if ( palette().active() != palette().inactive() )
	viewport()->update();
}

#endif // QT_NO_LISTVIEW
