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+/*****************************************************************
+
+Copyright (c) 1996-2000 the kicker authors. See file AUTHORS.
+ (c) 2001 Michael Goffioul <kdeprint@swing.be>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************/
+
+#ifndef __KPANELMENU_H__
+#define __KPANELMENU_H__
+
+#include <qstring.h>
+#include <kpopupmenu.h>
+#include <kgenericfactory.h>
+
+class KPanelMenuPrivate;
+
+/**
+ * @short Base class to build dynamically loaded menu entries for the K-menu, or the panel.
+ *
+ * This class allows to build menu entries that will be dynamically added either to
+ * the K-menu, or to the panel as a normal button. These dynamic menus are located
+ * in shared libraries that will be loaded at runtime by Kicker (the %KDE panel).
+ *
+ * To build such a menu, you have to inherit this class and implement the pure virtual
+ * functions #initialize() and slotExec(). You also have to provide a factory
+ * object in your library, see KLibFactory. This factory is only used to construct
+ * the menu object.
+ *
+ * Finally, you also have to provide a desktop file describing your dynamic menu. The
+ * relevant entries are: Name, Comment, Icon and X-KDE-Library (which contains the
+ * library name without any extension). This desktop file has to be installed in
+ * $KDEDIR/share/apps/kicker/menuext/.
+ *
+ * @author The kicker maintainers, Michael Goffioul <kdeprint@swing.be>
+ */
+class KDEUI_EXPORT KPanelMenu : public KPopupMenu
+{
+ Q_OBJECT
+
+public:
+ /**
+ * Construct a KPanelMenu object. This is the normal constructor to use when
+ * building extrernal menu entries.
+ */
+ KPanelMenu(QWidget *parent=0, const char *name=0);
+ /**
+ * Constructor used internally by Kicker. You don't really want to use it.
+ * @param startDir a directory to associate with this menu
+ * @param parent parent object
+ * @param name name of the object
+ * @see path(), setPath()
+ */
+ KPanelMenu(const QString &startDir, QWidget *parent=0, const char *name=0);
+ /**
+ * Destructor.
+ */
+ virtual ~KPanelMenu();
+
+ /**
+ * Get the directory path associated with this menu, or QString::null if
+ * there's no such associated path.
+ * @return the associated directory path
+ * @see setPath()
+ */
+ const QString& path() const;
+ /**
+ * Set a directory path to be associated with this menu.
+ * @param p the directory path
+ * @see path()
+ */
+ void setPath(const QString &p);
+ /**
+ * Tell if the menu has been initialized, that is it already contains items.
+ * This is useful when you need to know if you have to clear the menu, or to
+ * fill it.
+ * @return the initial state
+ * @see setInitialized(), initialize()
+ */
+ bool initialized() const;
+ /**
+ * Set the initial state. Set it to true when you menu is filled with the items
+ * you want.
+ * @param on the initial state
+ * @see initialized(), initialize()
+ */
+ void setInitialized(bool on);
+
+ /**
+ * Disable the automatic clearing of the menu. Kicker uses a cache system for
+ * its menus. After a specific configurable delay, the menu will be cleared.
+ * Use this function if you want to disable kicker's cache system, and avoid
+ * the clearing of your menu.
+ */
+ void disableAutoClear();
+
+public slots:
+ /**
+ * Reinitialize the menu: the menu is first cleared, the initial state is set
+ * to false, and finally #initialize() is called. Use this if you want to
+ * refill your menu immediately.
+ */
+ void reinitialize();
+ /**
+ * Deinitialize the menu: the menu is cleared and the initialized state is set to
+ * false. #initialize() is NOT called. It will be called before the menu is
+ * next shown, however. Use this slot if you want a delayed reinitialization.
+ * @since 3.1
+ */
+ void deinitialize();
+
+protected slots:
+ /**
+ * This slot is called just before the menu is shown. This allows your menu
+ * to update itself if needed. However you should instead re-implement
+ * #initialize to provide this feature. This function is responsible for
+ * the cache system handling, so if you re-implement it, you should call
+ * the base function also. Calls #initialize().
+ * @see disableAutoClear()
+ */
+ virtual void slotAboutToShow();
+ /**
+ * This is slot is called when an item from the menu has been selected. Your
+ * applet is then supposed to perform some action. You must re-implement this
+ * function.
+ * @param id the ID associated with the selected item
+ */
+ virtual void slotExec(int id) = 0;
+ /**
+ * This slots is called to initialize the menu. It is called automatically by
+ * slotAboutToShow(). By re-implementing this functions, you can reconstruct
+ * the menu before it is being shown. At the end of this function, you should
+ * call setInitialize() with true to tell the system that the menu is OK.
+ * You applet must re-implement this function.
+ * @see slotAboutToShow(), initialized(), setInitialized()
+ */
+ virtual void initialize() = 0;
+ /**
+ * Clears the menu, and update the initial state accordingly.
+ * @see initialized()
+ */
+ void slotClear();
+
+protected:
+ /**
+ * Re-implemented for internal reasons.
+ */
+ virtual void hideEvent(QHideEvent *ev);
+ /**
+ * For internal use only. Used by constructors.
+ */
+ void init(const QString& path = QString::null);
+
+protected:
+ virtual void virtual_hook( int id, void* data );
+private:
+ void internalInitialize();
+ KPanelMenuPrivate *d;
+};
+
+#define K_EXPORT_KICKER_MENUEXT( libname, classname ) \
+ K_EXPORT_COMPONENT_FACTORY( \
+ kickermenu_##libname, \
+ KGenericFactory<classname>("libkickermenu_" #libname) )
+
+#endif