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keybindings: Allow to add/remove keybindings at runtime
Add meta_display_add_keybinding()/meta_display_remove_keybinding(), which allow to add/remove keybindings dynamically at runtime. https://bugzilla.gnome.org/show_bug.cgi?id=663428
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@ -77,6 +77,9 @@ gboolean meta_prefs_add_keybinding (const char *name,
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MetaKeyBindingAction action,
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MetaKeyBindingFlags flags);
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gboolean meta_prefs_remove_keybinding (const char *name);
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#endif
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@ -59,6 +59,49 @@ static gboolean add_builtin_keybinding (MetaDisplay *display,
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MetaKeyHandlerFunc handler,
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int handler_arg);
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static void
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meta_key_binding_free (MetaKeyBinding *binding)
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{
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g_slice_free (MetaKeyBinding, binding);
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}
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static MetaKeyBinding *
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meta_key_binding_copy (MetaKeyBinding *binding)
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{
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return g_slice_dup (MetaKeyBinding, binding);
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}
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GType
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meta_key_binding_get_type (void)
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{
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static GType type_id = 0;
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if (G_UNLIKELY (type_id == 0))
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type_id = g_boxed_type_register_static (g_intern_static_string ("MetaKeyBinding"),
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(GBoxedCopyFunc)meta_key_binding_copy,
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(GBoxedFreeFunc)meta_key_binding_free);
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return type_id;
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}
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const char *
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meta_key_binding_get_name (MetaKeyBinding *binding)
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{
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return binding->name;
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}
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MetaVirtualModifier
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meta_key_binding_get_modifiers (MetaKeyBinding *binding)
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{
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return binding->modifiers;
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}
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guint
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meta_key_binding_get_mask (MetaKeyBinding *binding)
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{
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return binding->mask;
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}
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/* These can't be bound to anything, but they are used to handle
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* various other events. TODO: Possibly we should include them as event
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* handler functions and have some kind of flag to say they're unbindable.
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@ -501,13 +544,15 @@ display_get_keybinding (MetaDisplay *display,
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}
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static gboolean
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add_builtin_keybinding (MetaDisplay *display,
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const char *name,
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const char *schema,
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MetaKeyBindingFlags flags,
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MetaKeyBindingAction action,
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MetaKeyHandlerFunc func,
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int data)
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add_keybinding_internal (MetaDisplay *display,
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const char *name,
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const char *schema,
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MetaKeyBindingFlags flags,
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MetaKeyBindingAction action,
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MetaKeyHandlerFunc func,
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int data,
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gpointer user_data,
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GDestroyNotify free_data)
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{
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MetaKeyHandler *handler;
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@ -520,18 +565,103 @@ add_builtin_keybinding (MetaDisplay *display,
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handler->default_func = func;
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handler->data = data;
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handler->flags = flags;
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handler->user_data = user_data;
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handler->user_data_free_func = free_data;
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g_hash_table_insert (key_handlers, g_strdup (name), handler);
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return TRUE;
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}
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static gboolean
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add_builtin_keybinding (MetaDisplay *display,
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const char *name,
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const char *schema,
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MetaKeyBindingFlags flags,
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MetaKeyBindingAction action,
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MetaKeyHandlerFunc handler,
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int handler_arg)
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{
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return add_keybinding_internal (display, name, schema,
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flags | META_KEY_BINDING_BUILTIN,
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action, handler, handler_arg, NULL, NULL);
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}
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/**
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* meta_display_add_keybinding:
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* @display: a #MetaDisplay
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* @name: the binding's name
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* @schema: the #GSettings schema where @name is stored
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* @flags: flags to specify binding details
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* @handler: function to run when the keybinding is invoked
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* @user_data: the data to pass to @handler
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* @free_data: function to free @user_data
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*
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* Add a keybinding at runtime. The key @name in @schema needs to be of
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* type %G_VARIANT_TYPE_STRING_ARRAY, with each string describing a
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* keybinding in the form of "<Control>a" or "<Shift><Alt>F1". The parser
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* is fairly liberal and allows lower or upper case, and also abbreviations
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* such as "<Ctl>" and "<Ctrl>". If the key is set to the empty list or a
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* list with a single element of either "" or "disabled", the keybinding is
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* disabled.
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* If %META_KEY_BINDING_REVERSES is specified in @flags, the binding
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* may be reversed by holding down the "shift" key; therefore, "<Shift>"
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* cannot be one of the keys used. @handler is expected to check for the
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* "shift" modifier in this case and reverse its action.
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*
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* Use meta_display_remove_keybinding() to remove the binding.
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*
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* Returns: %TRUE if the keybinding was added successfully,
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* otherwise %FALSE
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*/
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gboolean
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meta_display_add_keybinding (MetaDisplay *display,
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const char *name,
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const char *schema,
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MetaKeyBindingFlags flags,
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MetaKeyHandlerFunc handler,
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gpointer user_data,
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GDestroyNotify free_data)
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{
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return add_keybinding_internal (display, name, schema, flags,
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META_KEYBINDING_ACTION_NONE,
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handler, 0, user_data, free_data);
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}
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/**
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* meta_display_remove_keybinding:
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* @display: the #MetaDisplay
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* @name: name of the keybinding to remove
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*
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* Remove keybinding @name; the function will fail if @name is not a known
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* keybinding or has not been added with meta_display_add_keybinding().
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*
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* Returns: %TRUE if the binding has been removed sucessfully,
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* otherwise %FALSE
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*/
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gboolean
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meta_display_remove_keybinding (MetaDisplay *display,
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const char *name)
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{
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if (!meta_prefs_remove_keybinding (name))
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return FALSE;
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g_hash_table_remove (key_handlers, name);
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return TRUE;
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}
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/**
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* meta_display_get_keybinding_action:
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* @display: A #MetaDisplay
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* @keycode: Raw keycode
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* @mask: Event mask
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*
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* Get the #MetaKeyBindingAction bound to %keycode. Only builtin
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* keybindings have an associated #MetaKeyBindingAction, for
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* bindings added dynamically with meta_display_add_keybinding()
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* the function will always return %META_KEYBINDING_ACTION_NONE.
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*
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* Returns: The action that should be taken for the given key, or
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* %META_KEYBINDING_ACTION_NONE.
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*/
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@ -1919,8 +1919,9 @@ meta_prefs_add_keybinding (const char *name,
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if (settings == NULL)
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{
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settings = g_settings_new (schema);
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g_signal_connect (settings, "changed",
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G_CALLBACK (bindings_changed), NULL);
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if ((flags & META_KEY_BINDING_BUILTIN) != 0)
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g_signal_connect (settings, "changed",
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G_CALLBACK (bindings_changed), NULL);
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g_hash_table_insert (settings_schemas, g_strdup (schema), settings);
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}
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@ -1931,6 +1932,7 @@ meta_prefs_add_keybinding (const char *name,
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pref->bindings = NULL;
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pref->add_shift = (flags & META_KEY_BINDING_REVERSES) != 0;
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pref->per_window = (flags & META_KEY_BINDING_PER_WINDOW) != 0;
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pref->builtin = (flags & META_KEY_BINDING_BUILTIN) != 0;
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strokes = g_settings_get_strv (settings, name);
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update_binding (pref, strokes);
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@ -1938,11 +1940,55 @@ meta_prefs_add_keybinding (const char *name,
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g_hash_table_insert (key_bindings, g_strdup (name), pref);
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if (!pref->builtin)
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{
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guint id;
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char *changed_signal = g_strdup_printf ("changed::%s", name);
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id = g_signal_connect (settings, changed_signal,
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G_CALLBACK (bindings_changed), NULL);
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g_free (changed_signal);
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g_object_set_data (G_OBJECT (settings), name, GUINT_TO_POINTER (id));
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queue_changed (META_PREF_KEYBINDINGS);
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}
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return TRUE;
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}
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gboolean
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meta_prefs_remove_keybinding (const char *name)
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{
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MetaKeyPref *pref;
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GSettings *settings;
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guint id;
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pref = g_hash_table_lookup (key_bindings, name);
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if (!pref)
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{
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meta_warning ("Trying to remove non-existent keybinding \"%s\".\n", name);
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return FALSE;
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}
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if (pref->builtin)
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{
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meta_warning ("Trying to remove builtin keybinding \"%s\".\n", name);
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return FALSE;
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}
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settings = SETTINGS (pref->schema);
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id = GPOINTER_TO_UINT (g_object_steal_data (G_OBJECT (settings), name));
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g_signal_handler_disconnect (settings, id);
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g_hash_table_remove (key_bindings, name);
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queue_changed (META_PREF_KEYBINDINGS);
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return TRUE;
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}
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/**
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* meta_prefs_get_keybindings: (skip)
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* meta_prefs_get_keybindings:
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* Return: (element-type MetaKeyPref) (transfer container):
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*/
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GList *
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@ -124,6 +124,16 @@ void meta_display_end_grab_op (MetaDisplay *display,
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MetaGrabOp meta_display_get_grab_op (MetaDisplay *display);
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gboolean meta_display_add_keybinding (MetaDisplay *display,
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const char *name,
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const char *schema,
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MetaKeyBindingFlags flags,
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MetaKeyHandlerFunc handler,
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gpointer user_data,
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GDestroyNotify free_data);
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gboolean meta_display_remove_keybinding (MetaDisplay *display,
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const char *name);
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MetaKeyBindingAction meta_display_get_keybinding_action (MetaDisplay *display,
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unsigned int keycode,
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unsigned long mask);
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@ -23,6 +23,11 @@
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#include <meta/display.h>
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#include <meta/common.h>
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#define META_TYPE_KEY_BINDING (meta_key_binding_get_type ())
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const char *meta_key_binding_get_name (MetaKeyBinding *binding);
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MetaVirtualModifier meta_key_binding_get_modifiers (MetaKeyBinding *binding);
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guint meta_key_binding_get_mask (MetaKeyBinding *binding);
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gboolean meta_keybindings_set_custom_handler (const gchar *name,
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MetaKeyHandlerFunc handler,
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@ -238,8 +238,9 @@ typedef enum
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{
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META_KEY_BINDING_NONE,
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META_KEY_BINDING_PER_WINDOW = 1 << 0,
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META_KEY_BINDING_REVERSES = 1 << 1,
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META_KEY_BINDING_IS_REVERSED = 1 << 2
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META_KEY_BINDING_BUILTIN = 1 << 1,
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META_KEY_BINDING_REVERSES = 1 << 2,
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META_KEY_BINDING_IS_REVERSED = 1 << 3
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} MetaKeyBindingFlags;
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typedef struct
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@ -250,7 +251,8 @@ typedef struct
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} MetaKeyCombo;
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/**
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* MetaKeyHandlerFunc: (skip)
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* MetaKeyHandlerFunc:
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* @event: (type gpointer):
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*
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*/
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typedef void (* MetaKeyHandlerFunc) (MetaDisplay *display,
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@ -262,7 +264,6 @@ typedef void (* MetaKeyHandlerFunc) (MetaDisplay *display,
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typedef struct _MetaKeyHandler MetaKeyHandler;
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typedef struct
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{
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char *name;
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@ -282,8 +283,13 @@ typedef struct
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/** for keybindings that apply only to a window */
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gboolean per_window:1;
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/** for keybindings not added with meta_display_add_keybinding() */
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gboolean builtin:1;
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} MetaKeyPref;
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GType meta_key_binding_get_type (void);
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GList *meta_prefs_get_keybindings (void);
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MetaKeyBindingAction meta_prefs_get_keybinding_action (const char *name);
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