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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., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA.
- */
- //$Id: kaction.h 465272 2005-09-29 09:47:40Z mueller $
-
- #ifndef __kaction_h__
- #define __kaction_h__
-
- #include <qkeysequence.h>
- #include <qobject.h>
- #include <qvaluelist.h>
- #include <qguardedptr.h>
- #include <kguiitem.h>
- #include <kshortcut.h>
- #include <kstdaction.h>
- #include <kicontheme.h>
-
- class QMenuBar;
- class QPopupMenu;
- class QComboBox;
- class QPoint;
- class QIconSet;
- class QString;
- class KToolBar;
-
- class KAccel;
- class KAccelActions;
- class KConfig;
- class KConfigBase;
- class KURL;
- class KInstance;
- class KToolBar;
- class KActionCollection;
- class KPopupMenu;
- class KMainWindow;
-
- /**
- * @short Class to encapsulate user-driven action or event
- *
- * 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 would 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
- * QSignalMapper . A tiny example:
- *
- * \code
- * 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 );
- * }
- * \endcode
- *
- * <b>General Usage:</b>\n
- *
- * 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.
- *
- * <b>Detailed Example:</b>\n
- *
- * Here is an example of enabling a "New [document]" action
- * \code
- * KAction *newAct = new KAction(i18n("&New"), "filenew",
- * KStdAccel::shortcut(KStdAccel::New),
- * this, SLOT(fileNew()),
- * actionCollection(), "new");
- * \endcode
- * 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.
- *
- * \code
- * QPopupMenu *file = new QPopupMenu;
- * newAct->plug(file);
- * \endcode
- * 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.
- *
- * \code
- * newAct->plug(toolBar());
- * \endcode
- * 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
- * \code
- * newAct->setEnabled(false)
- * \endcode
- * 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:
- * \code
- * newAct->unplugAll();
- * delete newAct;
- * \endcode
- * 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 KStdAction class rather than
- * defining your own.
- *
- * <b>Usage Within the XML Framework:</b>\n
- *
- * 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 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
- */
- class KDEUI_EXPORT 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.
- * @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 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 widget The GUI element to display this action
- * @param index The position into which the action is plugged. If
- * this is negative, the action is inserted at the end.
- */
- virtual int plug( QWidget *widget, 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) KDE_DEPRECATED;
-
- /**
- * "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 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() KDE_DEPRECATED;
-
- /**
- * 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.
- *
- * In KDE4 set group default to KIcon::Small while removing the other
- * iconSet() function.
- */
- virtual QIconSet iconSet( KIcon::Group group, int size=0 ) const;
- /**
- * Remove in KDE4
- */
- QIconSet iconSet() const { return iconSet( KIcon::Small ); }
-
- virtual QString icon() const;
-
- KActionCollection *parentCollection() const;
-
- /**
- * @internal
- * Generate a toolbar button id. Made public for reimplementations.
- */
- static int getToolButtonID();
-
-
- void unplugAll();
-
- /**
- * @since 3.4
- */
- enum ActivationReason { UnknownActivation, EmulatedActivation, AccelActivation, PopupMenuActivation, ToolBarActivation };
-
- 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.
- *
- * For the tooltip to show up on the statusbar you will need to connect
- * a couple of the actionclass signals to the toolbar.
- * The easiest way of doing this is in your main window class, when you create
- * a statusbar. See the KActionCollection class for more details.
- *
- * @see KActionCollection
- *
- */
- 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);
-
- /**
- * Calls setEnabled( !disable ).
- * @since 3.5
- */
- void setDisabled(bool disable) { return setEnabled(!disable); }
-
- /**
- * 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();
- /// @since 3.4
- void slotPopupActivated(); // KDE4: make virtual
- /// @since 3.4
- void slotButtonClicked( int, Qt::ButtonState state ); // KDE4: make virtual
-
- protected:
- KToolBar* toolBar( int index ) const;
- QPopupMenu* popupMenu( int index ) const;
- void removeContainer( int index );
- int findContainer( const QWidget* widget ) const;
- int findContainer( int id ) 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;
- /**
- * Return the underlying KGuiItem
- * @since 3.3
- */
- const KGuiItem& guiItem() const;
-
- signals:
- /**
- * Emitted when this action is activated
- */
- void activated();
- /**
- * This signal allows to know the reason why an action was activated:
- * whether it was due to a toolbar button, popupmenu, keyboard accel, or programmatically.
- * In the first two cases, it also allows to know which mouse button was
- * used (Left or Middle), and whether keyboard modifiers were pressed (e.g. CTRL).
- *
- * Note that this signal is emitted before the normal activated() signal.
- * Yes, BOTH signals are always emitted, so that connecting to activated() still works.
- * Applications which care about reason and state can either ignore the activated()
- * signal for a given action and react to this one instead, or store the
- * reason and state until the activated() signal is emitted.
- *
- * @since 3.4
- */
- void activated( KAction::ActivationReason reason, Qt::ButtonState state );
- 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 KDE_DEPRECATED;
-
- QString statusText() const
- { return toolTip(); }
-
- /**
- * @deprecated. Use setShortcut().
- * Sets the keyboard accelerator associated with this action.
- */
- void setAccel( int key ) KDE_DEPRECATED;
-
- /**
- * @deprecated. Use setToolTip instead (they do the same thing now).
- */
- void setStatusText( const QString &text )
- { setToolTip( text ); }
-
- /**
- * @deprecated. for backwards compatibility. Use itemId()
- */
- int menuId( int i ) { return itemId( i ); }
- #endif // !KDE_NO_COMPAT
-
- protected:
- virtual void virtual_hook( int id, void* data );
- private:
- class KActionPrivate;
- KActionPrivate* const d;
- };
-
- #include <kactioncollection.h>
- #include <kactionclasses.h>
-
- #endif
-