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+/* This file is part of the KDE libraries
+ Copyright (C) 2001 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 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., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+*/
+
+#ifndef _KACCELBASE_H
+#define _KACCELBASE_H
+
+#include <qmap.h>
+#include <qptrvector.h>
+#include <qstring.h>
+#include <qvaluevector.h>
+#include <qvaluelist.h>
+
+#include "kaccelaction.h"
+#include "kkeyserver_x11.h"
+
+class QPopupMenu;
+class QWidget;
+
+//----------------------------------------------------
+
+/**
+ * @internal
+ * Handle keyboard accelerators.
+ *
+ * Allow an user to configure
+ * key bindings through application configuration files or through the
+ * @ref KKeyChooser GUI.
+ *
+ * A @ref KAccel 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
+ * @ref 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 KAccel 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 @ref insertItem() is used only
+ * in the configuration dialog.
+ *<pre>
+ * KAccel *a = new KAccel( 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, SLOT( scrollUp() ) );
+ * // a->insertStdItem( KStdAccel::Print ); //not necessary, since it
+ * // is done automatially with the
+ * // connect below!
+ * a->connectItem(KStdAccel::Print, myWindow, SLOT( printDoc() ) );
+ *
+ * a->readSettings();
+ *</pre>
+ *
+ * If a shortcut has a menu entry as well, you could insert them like
+ * this. The example is again the @ref KStdAccel::Print from above.
+ *
+ * <pre>
+ * int id;
+ * id = popup->insertItem("&Print",this, SLOT(printDoc()));
+ * a->changeMenuAccel(popup, id, KStdAccel::Print );
+ * </pre>
+ *
+ * If you want a somewhat "exotic" name for your standard print action, like
+ * id = popup->insertItem(i18n("Print &Document"),this, SLOT(printDoc()));
+ * it might be a good idea to insert the standard action before as
+ * a->insertStdItem( KStdAccel::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
+ *
+ * <pre>
+ * id = popup->insertItem(i18n"Scroll &up",this, SLOT(scrollUp()));
+ * a->changeMenuAccel(popup, id, "Scroll Up" );
+ * </pre>
+ *
+ * Please keep the order right: First insert all functions in the
+ * acceleratior, then call a -> @ref readSettings() and @em then build your
+ * menu structure.
+ *
+ * @short Configurable key binding support.
+ * @version $Id: kaccelbase.h,v 1.22 2002/10/06 18:19:39 ellis Exp $
+ */
+
+class KAccelBase
+{
+ public:
+ enum Init { QT_KEYS = 0x00, NATIVE_KEYS = 0x01 };
+ enum Signal { KEYCODE_CHANGED };
+
+ KAccelBase( int fInitCode );
+ virtual ~KAccelBase();
+
+ uint actionCount() const;
+ KAccelActions& actions();
+ bool isEnabled() const;
+
+ KAccelAction* actionPtr( const QString& sAction );
+ const KAccelAction* actionPtr( const QString& sAction ) const;
+ KAccelAction* actionPtr( const KKey& key );
+ KAccelAction* actionPtr( const KKeyServer::Key& key );
+
+ const QString& configGroup() const { return m_sConfigGroup; }
+ void setConfigGroup( const QString& group );
+ void setConfigGlobal( bool global );
+ virtual void setEnabled( bool bEnabled ) = 0;
+ bool getAutoUpdate() { return m_bAutoUpdate; }
+ // return value of AutoUpdate flag before this call.
+ bool setAutoUpdate( bool bAuto );
+
+// Procedures for manipulating Actions.
+ //void clearActions();
+
+ KAccelAction* insert( const QString& sName, const QString& sDesc );
+ KAccelAction* insert(
+ const QString& sAction, const QString& sDesc, const QString& sHelp,
+ const KShortcut& rgCutDefaults3, const KShortcut& rgCutDefaults4,
+ const QObject* pObjSlot, const char* psMethodSlot,
+ bool bConfigurable = true, bool bEnabled = true );
+ bool remove( const QString& sAction );
+ bool setActionSlot( const QString& sAction, const QObject* pObjSlot, const char* psMethodSlot );
+
+ bool updateConnections();
+
+ bool setShortcut( const QString& sAction, const KShortcut& cut );
+
+// Modify individual Action sub-items
+ bool setActionEnabled( const QString& sAction, bool bEnable );
+
+ /**
+ * Read all key associations from @p config, or (if @p config
+ * is zero) from the application's configuration file
+ * @ref KGlobal::config().
+ *
+ * The group in which the configuration is stored can be
+ * set with @ref setConfigGroup().
+ */
+ void readSettings( KConfigBase* pConfig = 0 );
+
+ /**
+ * Write the current configurable associations to @p config,
+ * or (if @p config is zero) to the application's
+ * configuration file.
+ */
+ void writeSettings( KConfigBase* pConfig = 0 ) const;
+
+ QPopupMenu* createPopupMenu( QWidget* pParent, const KKeySequence& );
+
+ // Protected methods
+ protected:
+ void slotRemoveAction( KAccelAction* );
+
+ void createKeyList( QValueVector<struct X>& rgKeys );
+ bool insertConnection( KAccelAction* );
+ bool removeConnection( KAccelAction* );
+
+ virtual bool emitSignal( Signal ) = 0;
+ virtual bool connectKey( KAccelAction&, const KKeyServer::Key& ) = 0;
+ virtual bool connectKey( const KKeyServer::Key& ) = 0;
+ virtual bool disconnectKey( KAccelAction&, const KKeyServer::Key& ) = 0;
+ virtual bool disconnectKey( const KKeyServer::Key& ) = 0;
+
+ protected:
+ struct ActionInfo
+ {
+ KAccelAction* pAction;
+ uint iSeq, iVariation;
+ //ActionInfo* pInfoNext; // nil if only one action uses this key.
+
+ ActionInfo() { pAction = 0; iSeq = 0xffff; iVariation = 0xffff; }
+ ActionInfo( KAccelAction* _pAction, uint _iSeq, uint _iVariation )
+ { pAction = _pAction; iSeq = _iSeq; iVariation = _iVariation; }
+ };
+ typedef QMap<KKeyServer::Key, ActionInfo> KKeyToActionMap;
+
+ KAccelActions m_rgActions;
+ KKeyToActionMap m_mapKeyToAction;
+ QValueList<KAccelAction*> m_rgActionsNonUnique;
+ bool m_bNativeKeys; // Use native key codes instead of Qt codes
+ bool m_bEnabled;
+ bool m_bConfigIsGlobal;
+ QString m_sConfigGroup;
+ bool m_bAutoUpdate;
+ KAccelAction* mtemp_pActionRemoving;
+
+ private:
+ KAccelBase& operator =( const KAccelBase& );
+
+ friend class KAccelActions;
+};
+
+#endif // _KACCELBASE_H