/* This file is part of the KDE libraries Copyright (C) 1999 Reginald Stadlbauer (C) 1999 Simon Hausmann (C) 2000 Nicolas Hadacek (C) 2000 Kurt Granroth (C) 2000 Michael Koch (C) 2001 Holger Freyther (C) 2002 Ellis Whitehead 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 #include #include #include #include #include #include //US#include //US added the following files #include 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: * * 
 * 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 );
 * }
 *
* * @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 * 
 * KAction *newAct = new KAction(i18n("&New"), "filenew",
 *                               KStdAccel::shortcut(KStdAccel::New),
 *                               this, SLOT(fileNew()),
 *                               actionCollection(), "new");
 *
* 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. * * 
 * QPopupMenu *file = new QPopupMenu;
 * newAct->plug(file);
 *
* 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. * * 
 * newAct->plug(toolBar());
 *
* 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 * 
 * newAct->setEnabled(false)
 *
* 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: * 
 * newAct->unplugAll();
 * delete newAct;
 *
* 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 #include #endif