/****************************************************************************
**
** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
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** This file is part of the QtGui module of the Qt Toolkit.
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** License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file.  Alternatively you may (at
** your option) use any later version of the GNU General Public
** License if such license has been publicly approved by Trolltech ASA
** (or its successors, if any) and the KDE Free Qt Foundation. 
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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****************************************************************************/

#ifndef QLISTVIEW_H
#define QLISTVIEW_H

#include <QtGui/qabstractitemview.h>

QT_BEGIN_HEADER

QT_MODULE(Gui)

#ifndef QT_NO_LISTVIEW

class QListViewPrivate;

class Q_GUI_EXPORT QListView : public QAbstractItemView
{
    Q_OBJECT
    Q_ENUMS(Movement Flow ResizeMode LayoutMode ViewMode)
    Q_PROPERTY(Movement movement READ movement WRITE setMovement)
    Q_PROPERTY(Flow flow READ flow WRITE setFlow)
    Q_PROPERTY(bool isWrapping READ isWrapping WRITE setWrapping)
    Q_PROPERTY(ResizeMode resizeMode READ resizeMode WRITE setResizeMode)
    Q_PROPERTY(LayoutMode layoutMode READ layoutMode WRITE setLayoutMode)
    Q_PROPERTY(int spacing READ spacing WRITE setSpacing)
    Q_PROPERTY(QSize gridSize READ gridSize WRITE setGridSize)
    Q_PROPERTY(ViewMode viewMode READ viewMode WRITE setViewMode)
    Q_PROPERTY(int modelColumn READ modelColumn WRITE setModelColumn)
    Q_PROPERTY(bool uniformItemSizes READ uniformItemSizes WRITE setUniformItemSizes)
    Q_PROPERTY(int batchSize READ batchSize WRITE setBatchSize)
    Q_PROPERTY(bool wordWrap READ wordWrap WRITE setWordWrap)
    Q_PROPERTY(bool selectionRectVisible READ isSelectionRectVisible WRITE setSelectionRectVisible)

public:
    enum Movement { Static, Free, Snap };
    enum Flow { LeftToRight, TopToBottom };
    enum ResizeMode { Fixed, Adjust };
    enum LayoutMode { SinglePass, Batched };
    enum ViewMode { ListMode, IconMode };

    explicit QListView(QWidget *parent = 0);
    ~QListView();

    void setMovement(Movement movement);
    Movement movement() const;

    void setFlow(Flow flow);
    Flow flow() const;

    void setWrapping(bool enable);
    bool isWrapping() const;

    void setResizeMode(ResizeMode mode);
    ResizeMode resizeMode() const;

    void setLayoutMode(LayoutMode mode);
    LayoutMode layoutMode() const;

    void setSpacing(int space);
    int spacing() const;

    void setBatchSize(int batchSize);
    int batchSize() const;

    void setGridSize(const QSize &size);
    QSize gridSize() const;

    void setViewMode(ViewMode mode);
    ViewMode viewMode() const;

    void clearPropertyFlags();

    bool isRowHidden(int row) const;
    void setRowHidden(int row, bool hide);

    void setModelColumn(int column);
    int modelColumn() const;

    void setUniformItemSizes(bool enable);
    bool uniformItemSizes() const;

    void setWordWrap(bool on);
    bool wordWrap() const;

    void setSelectionRectVisible(bool show);
    bool isSelectionRectVisible() const;

    QRect visualRect(const QModelIndex &index) const;
    void scrollTo(const QModelIndex &index, ScrollHint hint = EnsureVisible);
    QModelIndex indexAt(const QPoint &p) const;

    void doItemsLayout();
    void reset();
    void setRootIndex(const QModelIndex &index);

Q_SIGNALS:
    void indexesMoved(const QModelIndexList &indexes);

protected:
    QListView(QListViewPrivate &, QWidget *parent = 0);

    bool event(QEvent *e);

    void scrollContentsBy(int dx, int dy);

    void resizeContents(int width, int height);
    QSize contentsSize() const;

    void dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight);
    void rowsInserted(const QModelIndex &parent, int start, int end);
    void rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end);

    void mouseMoveEvent(QMouseEvent *e);
    void mouseReleaseEvent(QMouseEvent *e);

    void timerEvent(QTimerEvent *e);
    void resizeEvent(QResizeEvent *e);
#ifndef QT_NO_DRAGANDDROP
    void dragMoveEvent(QDragMoveEvent *e);
    void dragLeaveEvent(QDragLeaveEvent *e);
    void dropEvent(QDropEvent *e);
    void startDrag(Qt::DropActions supportedActions);

    void internalDrop(QDropEvent *e);
    void internalDrag(Qt::DropActions supportedActions);
#endif // QT_NO_DRAGANDDROP

    QStyleOptionViewItem viewOptions() const;
    void paintEvent(QPaintEvent *e);

    int horizontalOffset() const;
    int verticalOffset() const;
    QModelIndex moveCursor(CursorAction cursorAction, Qt::KeyboardModifiers modifiers);
    QRect rectForIndex(const QModelIndex &index) const;
    void setPositionForIndex(const QPoint &position, const QModelIndex &index);

    void setSelection(const QRect &rect, QItemSelectionModel::SelectionFlags command);
    QRegion visualRegionForSelection(const QItemSelection &selection) const;
    QModelIndexList selectedIndexes() const;

    void updateGeometries();

    bool isIndexHidden(const QModelIndex &index) const;

    void selectionChanged(const QItemSelection &selected, const QItemSelection &deselected);
    void currentChanged(const QModelIndex &current, const QModelIndex &previous);

private:
    friend class QAccessibleItemView;
    int visualIndex(const QModelIndex &index) const;

    Q_DECLARE_PRIVATE(QListView)
    Q_DISABLE_COPY(QListView)
};

#endif // QT_NO_LISTVIEW

QT_END_HEADER

#endif // QLISTVIEW_H
