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+/* This file is part of the KDE libraries
+    Copyright (C) 1999 Reginald Stadlbauer <reggie@kde.org>
+              (C) 1999 Simon Hausmann <hausmann@kde.org>
+              (C) 2000 Nicolas Hadacek <haadcek@kde.org>
+              (C) 2000 Kurt Granroth <granroth@kde.org>
+              (C) 2000 Michael Koch <koch@kde.org>
+              (C) 2001 Holger Freyther <freyther@kde.org>
+              (C) 2002 Ellis Whitehead <ellis@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 version 2 as published by the Free Software Foundation.
+
+    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.
+*/
+//$Id$
+
+#ifndef __kaction_h__
+#define __kaction_h__
+
+
+//US #include <qkeysequence.h>
+#include <qobject.h>
+#include <qvaluelist.h>
+#include <qguardedptr.h>
+#include <kguiitem.h>
+#include <kshortcut.h>
+#include <kstdaction.h>
+//US#include <kicontheme.h>
+
+//US added the following files
+#include <kiconloader.h>
+
+class QMenuBar;
+class QPopupMenu;
+//USclass QComboBox;
+//USclass QPoint;
+class QIconSet;
+class QString;
+class KToolBar;
+
+class KAccel;
+//USclass KAccelActions;
+//USclass KConfig;
+//USclass KConfigBase;
+//USclass KURL;
+//USclass KInstance;
+//USclass KToolBar;
+class KActionCollection;
+//USclass KPopupMenu;
+class KMainWindow;
+
+/**
+ * The KAction class (and derived and super classes) provides a way to
+ * easily encapsulate a "real" user-selected action or event in your
+ * program.
+ *
+ * For instance, a user may want to @p paste the contents of
+ * the clipboard or @p scroll @p down a document or @p quit the
+ * application.  These are all @p actions -- events that the
+ * user causes to happen.  The KAction class allows the developer to
+ * deal with these actions in an easy and intuitive manner.
+ *
+ * Specifically, the KAction class encapsulated the various attributes
+ * to an event/action.  For instance, an action might have an icon
+ * that goes along with it (a clipboard for a "paste" action or
+ * scissors for a "cut" action).  The action might have some text to
+ * describe the action.  It will certainly have a method or function
+ * that actually @p executes the action!  All these attributes
+ * are contained within the KAction object.
+ *
+ * The advantage of dealing with Actions is that you can manipulate
+ * the Action without regard to the GUI representation of it.  For
+ * instance, in the "normal" way of dealing with actions like "cut",
+ * you would manually insert a item for Cut into a menu and a button
+ * into a toolbar.  If you want to disable the cut action for a moment
+ * (maybe nothing is selected), you woud have to hunt down the pointer
+ * to the menu item and the toolbar button and disable both
+ * individually.  Setting the menu item and toolbar item up uses very
+ * similar code - but has to be done twice!
+ *
+ * With the Action concept, you simply "plug" the Action into whatever
+ * GUI element you want.  The KAction class will then take care of
+ * correctly defining the menu item (with icons, accelerators, text,
+ * etc) or toolbar button.. or whatever.  From then on, if you
+ * manipulate the Action at all, the effect will propogate through all
+ * GUI representations of it.  Back to the "cut" example: if you want
+ * to disable the Cut Action, you would simply do
+ * 'cutAction->setEnabled(false)' and the menuitem and button would
+ * instantly be disabled!
+ *
+ * This is the biggest advantage to the Action concept -- there is a
+ * one-to-one relationship between the "real" action and @p all
+ * GUI representations of it.
+ *
+ * KAction emits the activated() signal if the user activated the
+ * corresponding GUI element ( menu item, toolbar button, etc. )
+ *
+ * If you are in the situation of wanting to map the activated()
+ * signal of multiple action objects to one slot, with a special
+ * argument bound to each action, then you might consider using
+ * @ref QSignalMapper . A tiny example:
+ *
+ * <PRE>
+ * QSignalMapper *desktopNumberMapper = new QSignalMapper( this );
+ * connect( desktopNumberMapper, SIGNAL( mapped( int ) ),
+ *          this, SLOT( moveWindowToDesktop( int ) ) );
+ *
+ * for ( uint i = 0; i < numberOfDesktops; ++i ) {
+ *     KAction *desktopAction = new KAction( i18n( "Move Window to Desktop %i" ).arg( i ), ... );
+ *     connect( desktopAction, SIGNAL( activated() ), desktopNumberMapper, SLOT( map() ) );
+ *     desktopNumberMapper->setMapping( desktopAction, i );
+ * }
+ * </PRE>
+ *
+ * @sect General Usage:
+ *
+ * The steps to using actions are roughly as follows
+ *
+ * @li Decide which attributes you want to associate with a given
+ *     action (icons, text, keyboard shortcut, etc)
+ * @li Create the action using KAction (or derived or super class).
+ * @li "Plug" the Action into whatever GUI element you want.  Typically,
+ *      this will be a menu or toolbar.
+ *
+ * @sect Detailed Example:
+ *
+ * Here is an example of enabling a "New [document]" action
+ * <PRE>
+ * KAction *newAct = new KAction(i18n("&New"), "filenew",
+ *                               KStdAccel::shortcut(KStdAccel::New),
+ *                               this, SLOT(fileNew()),
+ *                               actionCollection(), "new");
+ * </PRE>
+ * This line creates our action.  It says that wherever this action is
+ * displayed, it will use "&New" as the text, the standard icon, and
+ * the standard shortcut.  It further says that whenever this action
+ * is invoked, it will use the fileNew() slot to execute it.
+ *
+ * <PRE>
+ * QPopupMenu *file = new QPopupMenu;
+ * newAct->plug(file);
+ * </PRE>
+ * That just inserted the action into the File menu.  The point is, it's not
+ * important in which menu it is: all manipulation of the item is
+ * done through the newAct object.
+ *
+ * <PRE>
+ * newAct->plug(toolBar());
+ * </PRE>
+ * And this inserted the Action into the main toolbar as a button.
+ *
+ * That's it!
+ *
+ * If you want to disable that action sometime later, you can do so
+ * with
+ * <PRE>
+ * newAct->setEnabled(false)
+ * </PRE>
+ * and both the menuitem in File and the toolbar button will instantly
+ * be disabled.
+ *
+ * Do not delete a KAction object without unplugging it from all its
+ * containers. The simplest way to do that is to use the unplugAll()
+ * as in the following example:
+ * <PRE>
+ * newAct->unplugAll();
+ * delete newAct;
+ * </PRE>
+ * Normally you will not need to do this as KActionCollection manages
+ * everything for you.
+ *
+ * Note: if you are using a "standard" action like "new", "paste",
+ * "quit", or any other action described in the KDE UI Standards,
+ * please use the methods in the @ref KStdAction class rather than
+ * defining your own.
+ *
+ * @sect Usage Within the XML Framework:
+ *
+ * If you are using KAction within the context of the XML menu and
+ * toolbar building framework, then there are a few tiny changes.  The
+ * first is that you must insert your new action into an action
+ * collection.  The action collection (a @ref KActionCollection) is,
+ * logically enough, a central collection of all of the actions
+ * defined in your application.  The XML UI framework code in KXMLGUI
+ * classes needs access to this collection in order to build up the
+ * GUI (it's how the builder code knows which actions are valid and
+ * which aren't).
+ *
+ * Also, if you use the XML builder framework, then you do not ever
+ * have to plug your actions into containers manually.  The framework
+ * does that for you.
+ *
+ * @see KStdAction
+ * @short Class to encapsulate user-driven action or event
+ */
+class KAction : public QObject
+{
+  friend class KActionCollection;
+  Q_OBJECT
+  Q_PROPERTY( int containerCount READ containerCount )
+  Q_PROPERTY( QString plainText READ plainText )
+  Q_PROPERTY( QString text READ text WRITE setText )
+  Q_PROPERTY( QString shortcut READ shortcutText WRITE setShortcutText )
+  Q_PROPERTY( bool enabled READ isEnabled WRITE setEnabled )
+  Q_PROPERTY( QString group READ group WRITE setGroup )
+  Q_PROPERTY( QString whatsThis READ whatsThis WRITE setWhatsThis )
+  Q_PROPERTY( QString toolTip READ toolTip WRITE setToolTip )
+  Q_PROPERTY( QString icon READ icon WRITE setIcon )
+public:
+    /**
+     * Constructs an action with text, potential keyboard
+     * shortcut, and a SLOT to call when this action is invoked by
+     * the user.
+     *
+     * If you do not want or have a keyboard shortcut,
+     * set the @p cut param to 0.
+     *
+     * This is the most common KAction used when you do not have a
+     * corresponding icon (note that it won't appear in the current version
+     * of the "Edit ToolBar" dialog, because an action needs an icon to be
+     * plugged in a toolbar...).
+     *
+     * @param text The text that will be displayed.
+     * @param cut The corresponding keyboard shortcut.
+     * @param receiver The SLOT's parent.
+     * @param slot The SLOT to invoke to execute this action.
+     * @param parent This action's parent.
+     * @param name An internal name for this action.
+     */
+    KAction( const QString& text, const KShortcut& cut,
+             const QObject* receiver, const char* slot,
+             KActionCollection* parent, const char* name );
+    /**
+     * Constructs an action with text, icon, potential keyboard
+     * shortcut, and a SLOT to call when this action is invoked by
+     * the user.
+     *
+     * If you do not want or have a keyboard shortcut, set the
+     * @p cut param to 0.
+     *
+     * This is the other common KAction used.  Use it when you
+     * @p do have a corresponding icon.
+     *
+     * @param text The text that will be displayed.
+     * @param pix The icon to display.
+     * @param cut The corresponding keyboard shortcut.
+     * @param receiver The SLOT's parent.
+     * @param slot The SLOT to invoke to execute this action.
+     * @param parent This action's parent.
+     * @param name An internal name for this action.
+     */
+     
+    KAction( const QString& text, const QIconSet& pix, const KShortcut& cut,
+             const QObject* receiver, const char* slot,
+             KActionCollection* parent, const char* name );
+
+    /**
+     * Constructs an action with text, icon, potential keyboard
+     * shortcut, and a SLOT to call when this action is invoked by
+     * the user.  The icon is loaded on demand later based on where it
+     * is plugged in.
+     *
+     * If you do not want or have a keyboard shortcut, set the
+     * @p cut param to 0.
+     *
+     * This is the other common KAction used.  Use it when you
+     * @p do have a corresponding icon.
+     *
+     * @param text The text that will be displayed.
+     * @param pix The icon to display.
+     * @param cut The corresponding keyboard shortcut (shortcut).
+     * @param receiver The SLOT's parent.
+     * @param slot The SLOT to invoke to execute this action.
+     * @param parent This action's parent.
+     * @param name An internal name for this action.
+     */
+    KAction( const QString& text, const QString& pix, const KShortcut& cut,
+             const QObject* receiver, const char* slot,
+             KActionCollection* parent, const char* name );
+
+    /**
+     * The same as the above constructor, but with a KGuiItem providing
+     * the text and icon.
+     *
+     * @param item The KGuiItem with the label and (optional) icon.
+     */
+    KAction( const KGuiItem& item, const KShortcut& cut,
+             const QObject* receiver, const char* slot,
+             KActionCollection* parent, const char* name );
+        /**
+         * @obsolete
+         */
+        KAction( const QString& text, const KShortcut& cut = KShortcut(), QObject* parent = 0, const char* name = 0 );
+        /**
+         * @obsolete
+         */
+        KAction( const QString& text, const KShortcut& cut,
+                const QObject* receiver, const char* slot, QObject* parent, const char* name = 0 );
+        /**
+         * @obsolete
+         */
+        KAction( const QString& text, const QIconSet& pix, const KShortcut& cut = KShortcut(),
+                QObject* parent = 0, const char* name = 0 );
+        /**
+         * @obsolete
+         */
+        KAction( const QString& text, const QString& pix, const KShortcut& cut = KShortcut(),
+                QObject* parent = 0, const char* name = 0 );
+        /**
+         * @obsolete
+         */
+        KAction( const QString& text, const QIconSet& pix, const KShortcut& cut,
+                const QObject* receiver, const char* slot, QObject* parent, const char* name = 0 );
+        /**
+         * @obsolete
+         */
+        KAction( const QString& text, const QString& pix, const KShortcut& cut,
+                const QObject* receiver, const char* slot, QObject* parent,
+                const char* name = 0 );
+        /**
+         * @obsolete
+         */
+  KAction( QObject* parent = 0, const char* name = 0 );
+
+    /**
+     * Standard destructor
+     */
+    virtual ~KAction();
+
+    /**
+     * "Plug" or insert this action into a given widget.
+     *
+     * This will
+     * typically be a menu or a toolbar.  From this point on, you will
+     * never need to directly manipulate the item in the menu or
+     * toolbar.  You do all enabling/disabling/manipulation directly
+     * with your KAction object.
+     *
+     * @param w The GUI element to display this action
+     */
+    virtual int plug( QWidget *w, int index = -1 );
+
+    /**
+     * @deprecated.  Shouldn't be used.  No substitute available.
+     *
+     * "Plug" or insert this action into a given KAccel.
+     *
+     * @param accel The KAccel collection which holds this accel
+     * @param configurable If the shortcut is configurable via
+     * the KAccel configuration dialog (this is somehow deprecated since
+     * there is now a KAction key configuration dialog).
+     */
+    virtual void plugAccel(KAccel *accel, bool configurable = true);
+
+    /**
+     * "Unplug" or remove this action from a given widget.
+     *
+     * This will typically be a menu or a toolbar.  This is rarely
+     * used in "normal" application.  Typically, it would be used if
+     * your application has several views or modes, each with a
+     * completely different menu structure.  If you simply want to
+     * disable an action for a given period, use @ref setEnabled()
+     * instead.
+     *
+     * @param w Remove the action from this GUI element.
+     */
+    virtual void unplug( QWidget *w );
+
+    /**
+     * @deprecated.  Complement method to plugAccel().
+     * Disconnect this action from the KAccel.
+     */
+    virtual void unplugAccel();
+
+    /**
+     * returns whether the action is plugged into any container widget or not.
+     * @since 3.1
+     */
+    virtual bool isPlugged() const;
+
+    /**
+     * returns whether the action is plugged into the given container
+     */
+    bool isPlugged( const QWidget *container ) const;
+
+    /**
+     * returns whether the action is plugged into the given container with the given, container specific, id (often
+     * menu or toolbar id ) .
+     */
+    virtual bool isPlugged( const QWidget *container, int id ) const;
+
+    /**
+     * returns whether the action is plugged into the given container with the given, container specific, representative
+     * container widget item.
+     */
+    virtual bool isPlugged( const QWidget *container, const QWidget *_representative ) const;
+
+    QWidget* container( int index ) const;
+    int itemId( int index ) const;
+    QWidget* representative( int index ) const;
+    int containerCount() const;
+    /// @since 3.1
+    uint kaccelCount() const;
+
+    virtual bool hasIcon() const;
+#ifndef KDE_NO_COMPAT
+    bool hasIconSet() const { return hasIcon(); }
+#endif
+    virtual QString plainText() const;
+
+    /**
+     * Get the text associated with this action.
+     */
+    virtual QString text() const;
+
+    /**
+     * Get the keyboard shortcut associated with this action.
+     */
+    virtual const KShortcut& shortcut() const;
+    /**
+     * Get the default shortcut for this action.
+     */
+    virtual const KShortcut& shortcutDefault() const;
+
+    // These two methods are for Q_PROPERTY
+    QString shortcutText() const;
+    void setShortcutText( const QString& );
+
+    /**
+     * Returns true if this action is enabled.
+     */
+    virtual bool isEnabled() const;
+
+    /**
+     * Returns true if this action's shortcut is configurable.
+     */
+    virtual bool isShortcutConfigurable() const;
+
+    virtual QString group() const;
+
+    /**
+     * Get the What's this text for the action.
+     */
+    virtual QString whatsThis() const;
+
+    /**
+     * Get the tooltip text for the action.
+     */
+    virtual QString toolTip() const;
+
+    /**
+     * Get the QIconSet from which the icons used to display this action will
+     * be chosen.
+     */
+    virtual QIconSet iconSet( KIcon::Group group, int size=0 ) const;
+
+#ifndef KDE_NO_COMPAT
+    QIconSet iconSet() const
+    {
+      return iconSet( KIcon::Small );
+    }
+#endif
+
+    virtual QString icon() const;
+
+    KActionCollection *parentCollection() const;
+
+    /**
+     * @internal
+     * Generate a toolbar button id. Made public for reimplementations.
+     */
+    static int getToolButtonID();
+
+
+    void unplugAll();
+
+public slots:
+    /**
+     * Sets the text associated with this action. The text is used for menu
+     * and toolbar labels etc.
+     */
+    virtual void setText(const QString &text);
+
+    /**
+     * Sets the keyboard shortcut associated with this action.
+     */
+    virtual bool setShortcut( const KShortcut& );
+
+    virtual void setGroup( const QString& );
+
+    /**
+     * Sets the What's this text for the action. This text will be displayed when
+     * a widget that has been created by plugging this action into a container
+     * is clicked on in What's this mode.
+     *
+     * The What's this text can include QML markup as well as raw text.
+     */
+    virtual void setWhatsThis( const QString& text );
+
+    /**
+     * Sets the tooltip text for the action.
+     * This will be used as a tooltip for a toolbar button, as a
+     * statusbar help-text for a menu item, and it also appears
+     * in the toolbar editor, to describe the action.
+     */
+    virtual void setToolTip( const QString& );
+
+    /**
+     * Sets the QIconSet from which the icons used to display this action will
+     * be chosen.
+     */
+    virtual void setIconSet( const QIconSet &iconSet );
+
+    virtual void setIcon( const QString& icon );
+
+    /**
+     * Enables or disables this action. All uses of this action (eg. in menus
+     * or toolbars) will be updated to reflect the state of the action.
+     */
+    virtual void setEnabled(bool enable);
+
+    /**
+     * Indicate whether the user may configure the action's shortcut.
+     */
+    virtual void setShortcutConfigurable( bool );
+
+    /**
+     * Emulate user's interaction programmatically, by activating the action.
+     * The implementation simply emits activated().
+     */
+    virtual void activate();
+
+protected slots:
+    virtual void slotDestroyed();
+    virtual void slotKeycodeChanged();
+    virtual void slotActivated();
+
+protected:
+    KToolBar* toolBar( int index ) const;
+    QPopupMenu* popupMenu( int index ) const;
+    void removeContainer( int index );
+    int findContainer( const QWidget* widget ) const;
+    void plugMainWindowAccel( QWidget *w );
+
+    void addContainer( QWidget* parent, int id );
+    void addContainer( QWidget* parent, QWidget* representative );
+
+    virtual void updateShortcut( int i );
+    virtual void updateShortcut( QPopupMenu* menu, int id );
+    virtual void updateGroup( int id );
+    virtual void updateText(int i );
+    virtual void updateEnabled(int i);
+    virtual void updateIconSet(int i);
+    virtual void updateIcon( int i);
+    virtual void updateToolTip( int id );
+    virtual void updateWhatsThis( int i );
+
+    KActionCollection *m_parentCollection;
+    QString whatsThisWithIcon() const;
+
+signals:
+    void activated();
+    void enabled( bool );
+
+private:
+    void initPrivate( const QString& text, const KShortcut& cut,
+                  const QObject* receiver, const char* slot );
+    KAccel* kaccelCurrent();
+    bool initShortcut( const KShortcut& );
+    void plugShortcut();
+    bool updateKAccelShortcut( KAccel* kaccel );
+    void insertKAccel( KAccel* );
+    /** @internal To be used exclusively by KActionCollection::removeWidget(). */
+    void removeKAccel( KAccel* );
+
+#ifndef KDE_NO_COMPAT
+public:
+    /**
+     * @deprecated.  Use shortcut().
+     * Get the keyboard accelerator associated with this action.
+     */
+    int accel() const;
+
+    QString statusText() const
+        { return toolTip(); }
+
+    /**
+     * @deprecated.  Use setShortcut().
+     * Sets the keyboard accelerator associated with this action.
+     */
+    void setAccel( int key );
+
+    /**
+     * @deprecated. Use setToolTip instead (they do the same thing now).
+     */
+    void setStatusText( const QString &text )
+         { setToolTip( text ); }
+
+    /**
+     * @deprecated. for backwards compatibility.
+     */
+    int menuId( int i ) { return itemId( i ); }
+#endif // !KDE_NO_COMPAT
+
+protected:
+    virtual void virtual_hook( int id, void* data );
+private:
+    class KActionPrivate;
+    KActionPrivate *d;
+};
+
+#include <kactioncollection.h>
+#include <kactionclasses.h>
+
+#endif