/* This file is part of the KDE libraries Copyright (C) 2001 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 as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. 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. */ #ifndef _TDEACCELBASE_H #define _TDEACCELBASE_H #include #include #include #include #include #include "tdeaccelaction.h" #include "kkeyserver.h" class TQPopupMenu; class TQWidget; //---------------------------------------------------- /** * @internal * Handle keyboard accelerators. * * Allow an user to configure * key bindings through application configuration files or through the * KKeyChooser GUI. * * A TDEAccel contains a list of accelerator items. Each accelerator item * consists of an action name and a keyboard code combined with modifiers * (Shift, Ctrl and Alt.) * * For example, "Ctrl+P" could be a shortcut for printing a document. The key * codes are listed in ckey.h. "Print" could be the action name for printing. * The action name identifies the key binding in configuration files and the * KKeyChooser GUI. * * When pressed, an accelerator key calls the slot to which it has been * connected. Accelerator items can be connected so that a key will activate * two different slots. * * A TDEAccel object handles key events sent to its parent widget and to all * children of this parent widget. * * Key binding reconfiguration during run time can be prevented by specifying * that an accelerator item is not configurable when it is inserted. A special * group of non-configurable key bindings are known as the * standard accelerators. * * The standard accelerators appear repeatedly in applications for * standard document actions such as printing and saving. Convenience methods are * available to insert and connect these accelerators which are configurable on * a desktop-wide basis. * * It is possible for a user to choose to have no key associated with * an action. * * The translated first argument for insertItem() is used only * in the configuration dialog. *\code * TDEAccel *a = new TDEAccel( myWindow ); * // Insert an action "Scroll Up" which is associated with the "Up" key: * a->insertItem( i18n("Scroll Up"), "Scroll Up", "Up" ); * // Insert an action "Scroll Down" which is not associated with any key: * a->insertItem( i18n("Scroll Down"), "Scroll Down", 0); * a->connectItem( "Scroll up", myWindow, TQ_SLOT( scrollUp() ) ); * // a->insertStdItem( TDEStdAccel::Print ); //not necessary, since it * // is done automatially with the * // connect below! * a->connectItem(TDEStdAccel::Print, myWindow, TQ_SLOT( printDoc() ) ); * * a->readSettings(); *\endcode * * If a shortcut has a menu entry as well, you could insert them like * this. The example is again the TDEStdAccel::Print from above. * * \code * int id; * id = popup->insertItem("&Print",this, TQ_SLOT(printDoc())); * a->changeMenuAccel(popup, id, TDEStdAccel::Print ); * \endcode * * If you want a somewhat "exotic" name for your standard print action, like * id = popup->insertItem(i18n("Print &Document"),this, TQ_SLOT(printDoc())); * it might be a good idea to insert the standard action before as * a->insertStdItem( TDEStdAccel::Print, i18n("Print Document") ) * as well, so that the user can easily find the corresponding function. * * This technique works for other actions as well. Your "scroll up" function * in a menu could be done with * * \code * id = popup->insertItem(i18n"Scroll &up",this, TQ_SLOT(scrollUp())); * a->changeMenuAccel(popup, id, "Scroll Up" ); * \endcode * * Please keep the order right: First insert all functions in the * acceleratior, then call a -> readSettings() and @em then build your * menu structure. * * @short Configurable key binding support. */ class TDECORE_EXPORT TDEAccelBase { public: /** Initialization mode of the TDEAccelBase, used in constructor. */ enum Init { QT_KEYS = 0x00, NATIVE_KEYS = 0x01 }; /** Enum for kinds of signals which may be emitted. */ enum Signal { KEYCODE_CHANGED }; /** Constructor. @p fInitCode should be a bitwise OR of * values from the Init enum. */ TDEAccelBase( int fInitCode ); virtual ~TDEAccelBase(); /** Returns number of actions in this handler. */ uint actionCount() const; /** Returns a list of all the actions in this handler. */ TDEAccelActions& actions(); /** Returns whether this accelerator handler is enabled or not. */ bool isEnabled() const; /** Returns a pointer to the TDEAccelAction named @p sAction. */ TDEAccelAction* actionPtr( const TQString& sAction ); /** Const version of the above. */ const TDEAccelAction* actionPtr( const TQString& sAction ) const; /** Returns a pointer to the TDEAccelAction associated with * the key @p key. This function takes into account the * key mapping defined in the constructor. * * May return 0 if no (or more than one) * action is associated with the key. */ TDEAccelAction* actionPtr( const KKey& key ); /** Basically the same as above, except a KKeyServer::Key * already has a key mapping defined (either NATIVE_KEYS or not). */ TDEAccelAction* actionPtr( const KKeyServer::Key& key ); /** Returns the name of the configuration group these * accelerators are stored in. The default is "Shortcuts". */ const TQString& configGroup() const { return m_sConfigGroup; } /** Set the group (in the configuration file) for storing * accelerators. */ void setConfigGroup( const TQString& group ); void setConfigGlobal( bool global ); /** Enables or disables the accelerator. * @param bEnabled determines whether the accelerator should be enabled or * disabled. */ virtual void setEnabled( bool bEnabled ) = 0; /** Returns whether autoupdate is enabled for these accelerators. */ bool getAutoUpdate() { return m_bAutoUpdate; } /** Enables (or disables) autoupdate for these accelerators. * @return the value of autoupdate before the call. */ bool setAutoUpdate( bool bAuto ); // Procedures for manipulating Actions. //void clearActions(); TDEAccelAction* insert( const TQString& sName, const TQString& sDesc ); TDEAccelAction* insert( const TQString& sAction, const TQString& sDesc, const TQString& sHelp, const TDEShortcut& rgCutDefaults3, const TDEShortcut& rgCutDefaults4, const TQObject* pObjSlot, const char* psMethodSlot, bool bConfigurable = true, bool bEnabled = true ); bool remove( const TQString& sAction ); bool setActionSlot( const TQString& sAction, const TQObject* pObjSlot, const char* psMethodSlot ); bool updateConnections(); bool setShortcut( const TQString& sAction, const TDEShortcut& cut ); // Modify individual Action sub-items bool setActionEnabled( const TQString& sAction, bool bEnable ); /** * Read all key associations from @p config, or (if @p config * is zero) from the application's configuration file * TDEGlobal::config(). * * The group in which the configuration is stored can be * set with setConfigGroup(). */ void readSettings( TDEConfigBase* pConfig = 0 ); /** * Write the current configurable associations to @p config, * or (if @p config is zero) to the application's * configuration file. */ void writeSettings( TDEConfigBase* pConfig = 0 ) const; TQPopupMenu* createPopupMenu( TQWidget* pParent, const KKeySequence& ); // Protected methods protected: void slotRemoveAction( TDEAccelAction* ); struct X; /** Constructs a list of keys to be connected, sorted highest priority first. * @param rgKeys constructed list of keys */ void createKeyList( TQValueVector& rgKeys ); bool insertConnection( TDEAccelAction* ); bool removeConnection( TDEAccelAction* ); /** Emits a signal. * @param signal signal to be emitted */ virtual bool emitSignal( Signal signal ) = 0; /** Defines a key which activates the accelerator and executes the action * @param action action to be executed when key is pressed * @param key key which causes the action to be executed */ virtual bool connectKey( TDEAccelAction& action, const KKeyServer::Key& key ) = 0; /** Defines a key which activates the accelerator * @param key key which causes the action to be executed */ virtual bool connectKey( const KKeyServer::Key& key) = 0; /** Removes the key from accelerator so it no longer executes the action */ virtual bool disconnectKey( TDEAccelAction&, const KKeyServer::Key& ) = 0; /** Removes the key from accelerator */ virtual bool disconnectKey( const KKeyServer::Key& ) = 0; protected: virtual bool isEnabledInternal() const; struct ActionInfo { TDEAccelAction* pAction; uint iSeq, iVariation; //ActionInfo* pInfoNext; // nil if only one action uses this key. ActionInfo() { pAction = 0; iSeq = 0xffff; iVariation = 0xffff; } ActionInfo( TDEAccelAction* _pAction, uint _iSeq, uint _iVariation ) { pAction = _pAction; iSeq = _iSeq; iVariation = _iVariation; } }; typedef TQMap KKeyToActionMap; TDEAccelActions m_rgActions; KKeyToActionMap m_mapKeyToAction; TQValueList m_rgActionsNonUnique; bool m_bNativeKeys; // Use native key codes instead of Qt codes bool m_bEnabled; bool m_bConfigIsGlobal; TQString m_sConfigGroup; bool m_bAutoUpdate; TDEAccelAction* mtemp_pActionRemoving; private: TDEAccelBase& operator =( const TDEAccelBase& ); friend class TDEAccelActions; }; #endif // _TDEACCELBASE_H