/*
   Copyright (c) 2000 Matthias Elter <elter@kde.org>
   Copyright (c) 2003 Daniel Molkentin <molkentin@kde.org>
   Copyright (c) 2003 Matthias Kretz <kretz@kde.org>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.

*/

#ifndef KCMULTIDIALOG_H
#define KCMULTIDIALOG_H

#include <qptrdict.h>

#include <kdialogbase.h>
#include <kservice.h>
#include <klocale.h>

class KCModuleProxy;
class KCModuleInfo;

/**
 * @short A method that offers a KDialogBase containing arbitrary
 *        KControl Modules.
 *
 * @author Matthias Elter <elter@kde.org>, Daniel Molkentin <molkentin@kde.org>
 * @since 3.2
 */
class KCMultiDialog : public KDialogBase
{
    Q_OBJECT

public:
    /**
     * Constructs a new KCMultiDialog
     *
     * @param parent The parent widget
     * @param name The widget name
     * @param modal If you pass true here, the dialog will be modal
     **/
    KCMultiDialog( QWidget *parent=0, const char *name=0, bool modal=false );

    /**
     * Construct a personalized KCMultiDialog.
     *
     * @param dialogFace You can use TreeList, Tabbed, Plain, Swallow or
     *        IconList.
     * @param caption The dialog caption. Do not specify the application name
     *        here. The class will take care of that.
     * @param parent Parent of the dialog.
     * @param name Dialog name (for internal use only).
     * @param modal Controls dialog modality. If @p false, the rest of the
     *        program interface (example: other dialogs) is accessible while
     *        the dialog is open.
     */
    KCMultiDialog( int dialogFace, const QString & caption, QWidget * parent = 0, const char * name = 0, bool modal = false );


   /**
     * Constructor for the predefined layout mode where you specify the
     * kind of layout (face) and also add buttons. Note that the User1 button
     * of KDialogBase is already used to provide a "Reset" button so only
     * two more buttons are available to users of KCMultiDialog. When clicked 
     * they trigger slotUser2() and slotUser3(). 
     *
     * @param dialogFace You can use TreeList, Tabbed, Plain, Swallow or
     *        IconList.
     * @param user2 User button2 text item.
     * @param user3 User button3 text item.
     * @param buttonMask Specifies which buttons will be visible. If zero
     *        (0) no extra buttons will be added. You can only use the User2 and
     *        User3 buttons. The User1 button is already used internally. @see
     *        KDialogBase for more information on this.
     * @param caption The dialog caption. Do not specify the application name
     *        here. The class will take care of that.
     * @param parent Parent of the dialog.
     * @param name Dialog name (for internal use only).
     * @param modal Controls dialog modality. If @p false, the rest of the
     *        program interface (example: other dialogs) is accessible while
     *        the dialog is open.
     */
    KCMultiDialog( int dialogFace, const KGuiItem &user2,
            const KGuiItem &user3=KGuiItem(), int buttonMask=User2,
            const QString &caption=i18n("Configure"), QWidget *parent=0,
            const char *name=0, bool modal=false );

    /**
     * Destructor
     **/
   virtual ~KCMultiDialog();

    /**
     * Add a module.
     *
     * @param module Specify the name of the module that is to be added
     *               to the list of modules the dialog will show.
     *
     * @param withfallback Try harder to load the module. Might result
     *                     in the module appearing outside the dialog.
     **/
    void addModule(const QString& module, bool withfallback=true);

    /**
     * Add a module.
     *
     * @param moduleinfo Pass a KCModuleInfo object which will be
     *                   used for creating the module. It will be added
     *                   to the list of modules the dialog will show.
     *
     * @param parentmodulenames The names of the modules that should appear as
     *                          parents in the TreeList. Look at the
     *                          KDialogBase::addPage documentation for more info
     *                          on this.
     *
     * @param withfallback Try harder to load the module. Might result
     *                     in the module appearing outside the dialog.
     **/
    void addModule(const KCModuleInfo& moduleinfo, QStringList
            parentmodulenames = QStringList(), bool withfallback=false);

    /**
     * Remove all modules from the dialog.
     */
    void removeAllModules();

    /**
     * @internal
     * Re-implemented for internal reasons.
     */
    void show();

signals:
    /**
     * Emitted after all KCModules have been told to save their configuration.
     *
     * The applyClicked and okClicked signals are emitted before the
     * configuration is saved.
     */
    void configCommitted();

    /**
     * Emitted after the KCModules have been told to save their configuration.
     * It is emitted once for every instance the KCMs that were changed belong
     * to.
     *
     * You can make use of this if you have more than one component in your
     * application. instanceName tells you the instance that has to reload its
     * configuration.
     *
     * The applyClicked and okClicked signals are emitted before the
     * configuration is saved.
     *
     * @param instanceName The name of the instance that needs to reload its
     *                     configuration.
     */
    void configCommitted( const QCString & instanceName );

protected slots:
    /**
     * This slot is called when the user presses the "Default" Button.
     * You can reimplement it if needed.
     *
     * @note Make sure you call the original implementation!
     **/
    virtual void slotDefault();

    /**
     * This slot is called when the user presses the "Reset" Button.
     * You can reimplement it if needed.
     *
     * @note Make sure you call the original implementation!
     */
    virtual void slotUser1();

    /**
     * This slot is called when the user presses the "Apply" Button.
     * You can reimplement it if needed.
     *
     * @note Make sure you call the original implementation!
     **/
    virtual void slotApply();

    /**
     * This slot is called when the user presses the "OK" Button.
     * You can reimplement it if needed.
     *
     * @note Make sure you call the original implementation!
     **/
    virtual void slotOk();

    /**
     * This slot is called when the user presses the "Help" Button.
     * It reads the DocPath field of the currently selected KControl
     * module's .desktop file to find the path to the documentation,
     * which it then attempts to load.
     * 
     * You can reimplement this slot it if needed.
     *
     * @note Make sure you call the original implementation!
     **/
    virtual void slotHelp();

private slots:

    void slotAboutToShow(QWidget *);

    void clientChanged(bool state);

private:
    void init();
    void apply();

    struct CreatedModule
    {
        KCModuleProxy * kcm;
        KService::Ptr service;
    };
    typedef QValueList<CreatedModule> ModuleList;
    ModuleList m_modules;

    typedef QMap<KService::Ptr, KCModuleProxy*> OrphanMap;
    OrphanMap m_orphanModules;

    QPtrDict<QStringList> moduleParentComponents;
    QString _docPath;
    int dialogface;

    // For future use
    class KCMultiDialogPrivate;
    KCMultiDialogPrivate *d;
};

#endif //KCMULTIDIALOG_H

// vim: sw=4 sts=4 et
