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Diffstat (limited to 'tdeui/tdeaction.h')
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diff --git a/tdeui/tdeaction.h b/tdeui/tdeaction.h new file mode 100644 index 000000000..b68ded272 --- /dev/null +++ b/tdeui/tdeaction.h @@ -0,0 +1,676 @@ +/* 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. +*/ +//$Id$ + +#ifndef __kaction_h__ +#define __kaction_h__ + +#include <tqkeysequence.h> +#include <tqobject.h> +#include <tqvaluelist.h> +#include <tqguardedptr.h> +#include <kguiitem.h> +#include <kshortcut.h> +#include <kstdaction.h> +#include <kicontheme.h> + +class TQMenuBar; +class TQPopupMenu; +class TQComboBox; +class TQPoint; +class TQIconSet; +class TQString; +class TDEToolBar; + +class TDEAccel; +class TDEAccelActions; +class TDEConfig; +class TDEConfigBase; +class KURL; +class TDEInstance; +class TDEToolBar; +class TDEActionCollection; +class TDEPopupMenu; +class TDEMainWindow; + +/** + * @short Class to encapsulate user-driven action or event + * + * The TDEAction 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 TDEAction class allows the developer to + * deal with these actions in an easy and intuitive manner. + * + * Specifically, the TDEAction 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 TDEAction 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 TDEAction 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. + * + * TDEAction 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 + * TQSignalMapper . A tiny example: + * + * \code + * TQSignalMapper *desktopNumberMapper = new TQSignalMapper( this ); + * connect( desktopNumberMapper, TQT_SIGNAL( mapped( int ) ), + * this, TQT_SLOT( moveWindowToDesktop( int ) ) ); + * + * for ( uint i = 0; i < numberOfDesktops; ++i ) { + * TDEAction *desktopAction = new TDEAction( i18n( "Move Window to Desktop %i" ).arg( i ), ... ); + * connect( desktopAction, TQT_SIGNAL( activated() ), desktopNumberMapper, TQT_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 TDEAction (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 + * TDEAction *newAct = new TDEAction(i18n("&New"), "filenew", + * TDEStdAccel::shortcut(TDEStdAccel::New), + * this, TQT_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 + * TQPopupMenu *file = new TQPopupMenu; + * 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 TDEAction 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 TDEActionCollection 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 TDEAction 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 TDEActionCollection) 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 TDEUI_EXPORT TDEAction : public TQObject +{ + friend class TDEActionCollection; + Q_OBJECT + TQ_PROPERTY( int containerCount READ containerCount ) + TQ_PROPERTY( TQString plainText READ plainText ) + TQ_PROPERTY( TQString text READ text WRITE setText ) + TQ_PROPERTY( TQString shortcut READ shortcutText WRITE setShortcutText ) + TQ_PROPERTY( bool enabled READ isEnabled WRITE setEnabled ) + TQ_PROPERTY( TQString group READ group WRITE setGroup ) + TQ_PROPERTY( TQString whatsThis READ whatsThis WRITE setWhatsThis ) + TQ_PROPERTY( TQString toolTip READ toolTip WRITE setToolTip ) + TQ_PROPERTY( TQString icon READ icon WRITE setIcon ) +public: + /** + * Constructs an action with text, potential keyboard + * shortcut, and a TQT_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 TDEAction 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 TQT_SLOT to invoke to execute this action. + * @param parent This action's parent. + * @param name An internal name for this action. + */ + TDEAction( const TQString& text, const TDEShortcut& cut, + const TQObject* receiver, const char* slot, + TDEActionCollection* parent, const char* name ); + + /** + * Constructs an action with text, icon, potential keyboard + * shortcut, and a TQT_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 TDEAction 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 TQT_SLOT to invoke to execute this action. + * @param parent This action's parent. + * @param name An internal name for this action. + */ + TDEAction( const TQString& text, const TQIconSet& pix, const TDEShortcut& cut, + const TQObject* receiver, const char* slot, + TDEActionCollection* parent, const char* name ); + + /** + * Constructs an action with text, icon, potential keyboard + * shortcut, and a TQT_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 TDEAction 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 TQT_SLOT to invoke to execute this action. + * @param parent This action's parent. + * @param name An internal name for this action. + */ + TDEAction( const TQString& text, const TQString& pix, const TDEShortcut& cut, + const TQObject* receiver, const char* slot, + TDEActionCollection* 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 TQT_SLOT to invoke to execute this action. + * @param parent This action's parent. + * @param name An internal name for this action. + */ + TDEAction( const KGuiItem& item, const TDEShortcut& cut, + const TQObject* receiver, const char* slot, + TDEActionCollection* parent, const char* name ); + + /** + * @obsolete + */ + TDEAction( const TQString& text, const TDEShortcut& cut = TDEShortcut(), TQObject* parent = 0, const char* name = 0 ); + /** + * @obsolete + */ + TDEAction( const TQString& text, const TDEShortcut& cut, + const TQObject* receiver, const char* slot, TQObject* parent, const char* name = 0 ); + /** + * @obsolete + */ + TDEAction( const TQString& text, const TQIconSet& pix, const TDEShortcut& cut = TDEShortcut(), + TQObject* parent = 0, const char* name = 0 ); + /** + * @obsolete + */ + TDEAction( const TQString& text, const TQString& pix, const TDEShortcut& cut = TDEShortcut(), + TQObject* parent = 0, const char* name = 0 ); + /** + * @obsolete + */ + TDEAction( const TQString& text, const TQIconSet& pix, const TDEShortcut& cut, + const TQObject* receiver, const char* slot, TQObject* parent, const char* name = 0 ); + /** + * @obsolete + */ + TDEAction( const TQString& text, const TQString& pix, const TDEShortcut& cut, + const TQObject* receiver, const char* slot, TQObject* parent, + const char* name = 0 ); + /** + * @obsolete + */ + TDEAction( TQObject* parent = 0, const char* name = 0 ); + + /** + * Standard destructor + */ + virtual ~TDEAction(); + + /** + * "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 TDEAction 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( TQWidget *widget, int index = -1 ); + + /** + * @deprecated. Shouldn't be used. No substitute available. + * + * "Plug" or insert this action into a given TDEAccel. + * + * @param accel The TDEAccel collection which holds this accel + * @param configurable If the shortcut is configurable via + * the TDEAccel configuration dialog (this is somehow deprecated since + * there is now a TDEAction key configuration dialog). + */ + virtual void plugAccel(TDEAccel *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( TQWidget *w ); + + /** + * @deprecated. Complement method to plugAccel(). + * Disconnect this action from the TDEAccel. + */ + 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 TQWidget *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 TQWidget *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 TQWidget *container, const TQWidget *_representative ) const; + + TQWidget* container( int index ) const; + int itemId( int index ) const; + TQWidget* 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 TQString plainText() const; + + /** + * Get the text associated with this action. + */ + virtual TQString text() const; + + /** + * Get the keyboard shortcut associated with this action. + */ + virtual const TDEShortcut& shortcut() const; + /** + * Get the default shortcut for this action. + */ + virtual const TDEShortcut& shortcutDefault() const; + + // These two methods are for TQ_PROPERTY + TQString shortcutText() const; + void setShortcutText( const TQString& ); + + /** + * 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 TQString group() const; + + /** + * Get the What's this text for the action. + */ + virtual TQString whatsThis() const; + + /** + * Get the tooltip text for the action. + */ + virtual TQString toolTip() const; + + /** + * Get the TQIconSet 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 TQIconSet iconSet( KIcon::Group group, int size=0 ) const; + /** + * Remove in KDE4 + */ + TQIconSet iconSet() const { return iconSet( KIcon::Small ); } + + virtual TQString icon() const; + + TDEActionCollection *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 TQString &text); + + /** + * Sets the keyboard shortcut associated with this action. + */ + virtual bool setShortcut( const TDEShortcut& ); + + virtual void setGroup( const TQString& ); + + /** + * 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 TQString& 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 TDEActionCollection class for more details. + * + * @see TDEActionCollection + * + */ + virtual void setToolTip( const TQString& ); + + /** + * Sets the TQIconSet from which the icons used to display this action will + * be chosen. + */ + virtual void setIconSet( const TQIconSet &iconSet ); + + virtual void setIcon( const TQString& 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, TQt::ButtonState state ); // KDE4: make virtual + +protected: + TDEToolBar* toolBar( int index ) const; + TQPopupMenu* popupMenu( int index ) const; + void removeContainer( int index ); + int findContainer( const TQWidget* widget ) const; + int findContainer( int id ) const; + void plugMainWindowAccel( TQWidget *w ); + + void addContainer( TQWidget* parent, int id ); + void addContainer( TQWidget* parent, TQWidget* representative ); + + virtual void updateShortcut( int i ); + virtual void updateShortcut( TQPopupMenu* 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 ); + + TDEActionCollection *m_parentCollection; + TQString 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( TDEAction::ActivationReason reason, TQt::ButtonState state ); + void enabled( bool ); + +private: + void initPrivate( const TQString& text, const TDEShortcut& cut, + const TQObject* receiver, const char* slot ); + TDEAccel* kaccelCurrent(); + bool initShortcut( const TDEShortcut& ); + void plugShortcut(); + bool updateTDEAccelShortcut( TDEAccel* kaccel ); + void insertTDEAccel( TDEAccel* ); + /** @internal To be used exclusively by TDEActionCollection::removeWidget(). */ + void removeTDEAccel( TDEAccel* ); + +#ifndef KDE_NO_COMPAT +public: + /** + * @deprecated. Use shortcut(). + * Get the keyboard accelerator associated with this action. + */ + int accel() const KDE_DEPRECATED; + + TQString 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 TQString &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 TDEActionPrivate; + TDEActionPrivate* const d; +}; + +#include <kactioncollection.h> +#include <kactionclasses.h> + +#endif |