File indexing completed on 2024-04-21 03:54:10

 /*
     This file is part of the KDE libraries
     SPDX-FileCopyrightText: 2001, 2002 Ellis Whitehead <ellis@kde.org>
     SPDX-FileCopyrightText: 2006 Hamish Rodda <rodda@kde.org>
     SPDX-FileCopyrightText: 2007 Andreas Hartmetz <ahartmetz@gmail.com>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #ifndef _KGLOBALACCEL_H_
 #define _KGLOBALACCEL_H_
 
 #include "kglobalshortcutinfo.h"
 #include <kglobalaccel_export.h>
 
 #include <QKeySequence>
 #include <QList>
 #include <QObject>
 
 class QAction;
 class OrgKdeKglobalaccelComponentInterface;
 
 /**
  * @short Configurable global shortcut support
  *
  * KGlobalAccel allows you to have global accelerators that are independent of
  * the focused window.  Unlike regular shortcuts, the application's window does not need focus
  * for them to be activated.
  *
  * @see KKeyChooser
  * @see KKeyDialog
  */
 class KGLOBALACCEL_EXPORT KGlobalAccel : public QObject
 {
     Q_OBJECT
 
 public:
     /**
      * An enum about global shortcut setter semantics
      */
     enum GlobalShortcutLoading {
         /// Look up the action in global settings (using its main component's name and text())
         /// and set the shortcut as saved there.
         /// @see setGlobalShortcut()
         Autoloading = 0x0,
         /// Prevent autoloading of saved global shortcut for action
         NoAutoloading = 0x4,
     };
 
     /**
      * Index for actionId QStringLists
      */
     enum actionIdFields {
         ComponentUnique = 0, //!< Components Unique Name (ID)
         ActionUnique = 1, //!< Actions Unique Name(ID)
         ComponentFriendly = 2, //!< Components Friendly Translated Name
         ActionFriendly = 3, //!< Actions Friendly Translated Name
     };
 
     /**
      * Keysequence match semantics.
      *
      * Assuming we have an Emacs-style shortcut, for example (Alt+B, Alt+F, Alt+G) already assigned,
      * how a new shortcut is compared depends on which value of the enum is used:
      * @c Equal : Exact matching: (Alt+B, Alt+F, Alt+G)
      * @c Shadows : Sequence shadowing: (Alt+B, Alt+F), (Alt+F, Alt+G)
      * @c Shadowed : Sequence being shadowed: (Alt+B, Alt+F, Alt+G, <any key>), (<any key>, Alt+B, Alt+F, Alt+G)
      *
      * @since 5.90
      */
     enum MatchType {
         Equal,
         Shadows,
         Shadowed,
     };
     Q_ENUM(MatchType)
 
     /**
      * Returns (and creates if necessary) the singleton instance
      */
     static KGlobalAccel *self();
 
     /**
      * Take away the given shortcut from the named action it belongs to.
      * This applies to all actions with global shortcuts in any KDE application.
      *
      * @see promptStealShortcutSystemwide()
      */
     static void stealShortcutSystemwide(const QKeySequence &seq);
 
     /**
      * Clean the shortcuts for component @a componentUnique.
      *
      * If the component is not active all global shortcut registrations are
      * purged and the component is removed completely.
      *
      * If the component is active all global shortcut registrations not in use
      * will be purged. If there is no shortcut registration left the component
      * is purged too.
      *
      * If a purged component or shortcut is activated the next time it will
      * reregister itself. All you probably will lose on wrong usage are the
      * user's set shortcuts.
      *
      * If you make sure your component is running and all global shortcuts it
      * has are active this function can be used to clean up the registry.
      *
      * Handle with care!
      *
      * If the method return @c true at least one shortcut was purged so handle
      * all previously acquired information with care.
      */
     static bool cleanComponent(const QString &componentUnique);
 
     /**
      * Check if @a component is active.
      *
      * @param componentUnique the components unique identifier
      * @return @c true if active, @false if not
      */
     static bool isComponentActive(const QString &componentName);
 
     /**
      * Returns a list of global shortcuts registered for the shortcut @p seq.
      *
      * If the list contains more that one entry it means the component
      * that registered the shortcuts uses global shortcut contexts. All
      * returned shortcuts belong to the same component.
      *
      * @param type a value from the KGlobalAccel::MatchType enum
      *
      * @since 5.90
      */
     static QList<KGlobalShortcutInfo> globalShortcutsByKey(const QKeySequence &seq, MatchType type = Equal);
 
     /**
      * Check if the shortcut @seq is available for the @p component. The
      * component is only of interest if the current application uses global shortcut
      * contexts. In that case a global shortcut by @p component in an inactive
      * global shortcut contexts does not block the @p seq for us.
      *
      * @since 4.2
      */
     static bool isGlobalShortcutAvailable(const QKeySequence &seq, const QString &component = QString());
 
     /**
      * Show a messagebox to inform the user that a global shortcut is already occupied,
      * and ask to take it away from its current action(s). This is GUI only, so nothing will
      * be actually changed.
      *
      * @see stealShortcutSystemwide()
      *
      * @since 4.2
      */
     static bool promptStealShortcutSystemwide(QWidget *parent, const QList<KGlobalShortcutInfo> &shortcuts, const QKeySequence &seq);
 
     /**
      * Assign a default global shortcut for a given QAction.
      * For more information about global shortcuts @see setShortcut
      * Upon shortcut change the globalShortcutChanged will be triggered so other applications get notified
      *
      * @sa globalShortcutChanged
      *
      * @since 5.0
      */
     bool setDefaultShortcut(QAction *action, const QList<QKeySequence> &shortcut, GlobalShortcutLoading loadFlag = Autoloading);
 
     /**
      * Assign a global shortcut for the given action. Global shortcuts
      * allow an action to respond to key shortcuts independently of the focused window,
      * i.e. the action will trigger if the keys were pressed no matter where in the X session.
      *
      * The action must have a per main component unique
      * action->objectName() to enable cross-application bookkeeping. If the action->objectName() is empty this method will
      * do nothing and will return false.
      *
      * It is mandatory that the action->objectName() doesn't change once the shortcut has been successfully registered.
      *
      * \note KActionCollection::insert(name, action) will set action's objectName to name so you often
      * don't have to set an objectName explicitly.
      *
      * When an action, identified by main component name and objectName(), is assigned
      * a global shortcut for the first time on a KDE installation the assignment will
      * be saved. The shortcut will then be restored every time setGlobalShortcut() is
      * called with @p loading == Autoloading.
      *
      * If you actually want to change the global shortcut you have to set
      * @p loading to NoAutoloading. The new shortcut will be automatically saved again.
      *
      * @param action the action for which the shortcut will be assigned
      * @param shortcut global shortcut(s) to assign. Will be ignored unless @p loading is set to NoAutoloading or this is the first time ever you call this
      * method (see above).
      * @param loadFlag if Autoloading, assign the global shortcut this action has previously had if any.
      *                   That way user preferences and changes made to avoid clashes will be conserved.
      *                if NoAutoloading the given shortcut will be assigned without looking up old values.
      *                   You should only do this if the user wants to change the shortcut or if you have
      *                   another very good reason. Key combinations that clash with other shortcuts will be
      *                   dropped.
      *
      * \note the default shortcut will never be influenced by autoloading - it will be set as given.
      * @sa shortcut()
      * @sa globalShortcutChanged
      * @since 5.0
      */
     bool setShortcut(QAction *action, const QList<QKeySequence> &shortcut, GlobalShortcutLoading loadFlag = Autoloading);
 
     /**
      * Convenient method to set both active and default shortcut.
      *
      * If more control for loading the shortcuts is needed use the variants offering more control.
      *
      * @sa setShortcut
      * @sa setDefaultShortcut
      * @since 5.0
      **/
     static bool setGlobalShortcut(QAction *action, const QList<QKeySequence> &shortcut);
 
     /**
      * Convenient method to set both active and default shortcut.
      *
      * This method is suited for the case that only one shortcut is to be configured.
      *
      * If more control for loading the shortcuts is needed use the variants offering more control.
      *
      * @sa setShortcut
      * @sa setDefaultShortcut
      * @since 5.0
      **/
     static bool setGlobalShortcut(QAction *action, const QKeySequence &shortcut);
 
     /**
      * Get the global default shortcut for this action, if one exists. Global shortcuts
      * allow your actions to respond to accellerators independently of the focused window.
      * Unlike regular shortcuts, the application's window does not need focus
      * for them to be activated.
      *
      * @sa setDefaultShortcut()
      * @since 5.0
      */
     QList<QKeySequence> defaultShortcut(const QAction *action) const;
 
     /**
      * Get the global shortcut for this action, if one exists. Global shortcuts
      * allow your actions to respond to accellerators independently of the focused window.
      * Unlike regular shortcuts, the application's window does not need focus
      * for them to be activated.
      *
      * @note that this method only works together with setShortcut() because the action pointer
      * is used to retrieve the result. If you would like to retrieve the shortcut as stored
      * in the global settings, use the globalShortcut(componentName, actionId) instead.
      *
      * @sa setShortcut()
      * @since 5.0
      */
     QList<QKeySequence> shortcut(const QAction *action) const;
 
     /**
      * Retrieves the shortcut as defined in global settings by
      * componentName (e.g. "kwin") and actionId (e.g. "Kill Window").
      *
      * @since 5.10
      */
     QList<QKeySequence> globalShortcut(const QString &componentName, const QString &actionId) const;
 
     /**
      * Unregister and remove all defined global shortcuts for the given action.
      *
      * @since 5.0
      */
     void removeAllShortcuts(QAction *action);
 
     /**
      * Returns true if a shortcut or a default shortcut has been registered for the given action
      *
      * @since 5.0
      */
     bool hasShortcut(const QAction *action) const;
 
 Q_SIGNALS:
     /**
      * Emitted when the global shortcut is changed. A global shortcut is
      * subject to be changed by the global shortcuts kcm.
      *
      * @param action pointer to the action for which the changed shortcut was registered
      * @param seq the key sequence that corresponds to the changed shortcut
      *
      * @see setGlobalShortcut
      * @see setDefaultShortcut
      * @since 5.0
      */
     void globalShortcutChanged(QAction *action, const QKeySequence &seq);
     void globalShortcutActiveChanged(QAction *action, bool active);
 
 private:
     /// Creates a new KGlobalAccel object
     KGLOBALACCEL_NO_EXPORT KGlobalAccel();
 
     /// Destructor
     KGLOBALACCEL_NO_EXPORT ~KGlobalAccel() override;
 
     //! get component @p componentUnique
     KGLOBALACCEL_NO_EXPORT OrgKdeKglobalaccelComponentInterface *getComponent(const QString &componentUnique);
 
     class KGlobalAccelPrivate *const d;
 
     friend class KGlobalAccelSingleton;
 };
 
 KGLOBALACCEL_EXPORT QDBusArgument &operator<<(QDBusArgument &argument, const KGlobalAccel::MatchType &type);
 KGLOBALACCEL_EXPORT const QDBusArgument &operator>>(const QDBusArgument &argument, KGlobalAccel::MatchType &type);
 
 #endif // _KGLOBALACCEL_H_