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Diffstat (limited to 'libdbusmenu-gtk/parser.c')
| -rw-r--r-- | libdbusmenu-gtk/parser.c | 887 |
1 files changed, 887 insertions, 0 deletions
diff --git a/libdbusmenu-gtk/parser.c b/libdbusmenu-gtk/parser.c new file mode 100644 index 0000000..f516dde --- /dev/null +++ b/libdbusmenu-gtk/parser.c @@ -0,0 +1,887 @@ +/* +Parse to take a set of GTK Menus and turn them into something that can +be sent over the wire. + +Copyright 2011 Canonical Ltd. + +Authors: + Numerous (check Bazaar) + +This program is free software: you can redistribute it and/or modify it +under the terms of either or both of the following licenses: + +1) the GNU Lesser General Public License version 3, as published by the +Free Software Foundation; and/or +2) the GNU Lesser General Public License version 2.1, as published by +the Free Software Foundation. + +This program is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranties of +MERCHANTABILITY, SATISFACTORY QUALITY or FITNESS FOR A PARTICULAR +PURPOSE. See the applicable version of the GNU Lesser General Public +License for more details. + +You should have received a copy of both the GNU Lesser General Public +License version 3 and version 2.1 along with this program. If not, see +<http://www.gnu.org/licenses/> +*/ + +#include "parser.h" +#include "menuitem.h" +#include "serializablemenuitem.h" + +#define CACHED_MENUITEM "dbusmenu-gtk-parser-cached-item" +#define PARSER_DATA "dbusmenu-gtk-parser-data" + +typedef struct _ParserData +{ + GtkWidget *label; + GtkAction *action; + GtkWidget *widget; + GtkWidget *shell; + GtkWidget *image; +} ParserData; + +typedef struct _RecurseContext +{ + GtkWidget * toplevel; + DbusmenuMenuitem * parent; +} RecurseContext; + +static void parse_menu_structure_helper (GtkWidget * widget, RecurseContext * recurse); +static DbusmenuMenuitem * construct_dbusmenu_for_widget (GtkWidget * widget); +static void accel_changed (GtkWidget * widget, + gpointer data); +static void checkbox_toggled (GtkWidget * widget, + DbusmenuMenuitem * mi); +static void update_icon (DbusmenuMenuitem * menuitem, + GtkImage * image); +static GtkWidget * find_menu_label (GtkWidget * widget); +static void label_notify_cb (GtkWidget * widget, + GParamSpec * pspec, + gpointer data); +static void image_notify_cb (GtkWidget * widget, + GParamSpec * pspec, + gpointer data); +static void action_notify_cb (GtkAction * action, + GParamSpec * pspec, + gpointer data); +static void child_added_cb (GtkContainer * menu, + GtkWidget * widget, + gpointer data); +static void theme_changed_cb (GtkIconTheme * theme, + gpointer data); +static void item_activated (DbusmenuMenuitem * item, + guint timestamp, + gpointer user_data); +static gboolean item_about_to_show (DbusmenuMenuitem * item, + gpointer user_data); +static void widget_notify_cb (GtkWidget * widget, + GParamSpec * pspec, + gpointer data); +static gboolean should_show_image (GtkImage * image); +static void menuitem_notify_cb (GtkWidget * widget, + GParamSpec * pspec, + gpointer data); + +/** + * dbusmenu_gtk_parse_menu_structure: + * @widget: A #GtkMenuItem or #GtkMenuShell to turn into a #DbusmenuMenuitem + * + * Goes through the GTK structures and turns them into the appropraite + * Dbusmenu structures along with setting up all the relationships + * between the objects. It also stores the dbusmenu items as a cache + * on the GTK items so that they'll be reused if necissary. + * + * Return value: (transfer full): A dbusmenu item representing the menu structure + */ +DbusmenuMenuitem * +dbusmenu_gtk_parse_menu_structure (GtkWidget * widget) +{ + g_return_val_if_fail(GTK_IS_MENU_ITEM(widget) || GTK_IS_MENU_SHELL(widget), NULL); + + RecurseContext recurse = {0}; + + recurse.toplevel = gtk_widget_get_toplevel(widget); + + parse_menu_structure_helper(widget, &recurse); + + return recurse.parent; +} + +/* Called when the dbusmenu item that we're keeping around + is finalized */ +static void +dbusmenu_cache_freed (gpointer data, GObject * obj) +{ + /* If the dbusmenu item is killed we don't need to remove + the weak ref as well. */ + g_object_steal_data(G_OBJECT(data), CACHED_MENUITEM); + + ParserData *pdata = (ParserData *)g_object_get_data(G_OBJECT(obj), PARSER_DATA); + + if (pdata != NULL && pdata->label != NULL) { + g_signal_handlers_disconnect_by_func(pdata->label, G_CALLBACK(label_notify_cb), obj); + g_object_remove_weak_pointer(G_OBJECT(pdata->label), (gpointer*)&pdata->label); + } + + if (pdata != NULL && pdata->action != NULL) { + g_signal_handlers_disconnect_by_func(pdata->action, G_CALLBACK(action_notify_cb), obj); + g_object_remove_weak_pointer(G_OBJECT(pdata->action), (gpointer*)&pdata->action); + } + + if (pdata != NULL && pdata->widget != NULL) { + g_signal_handlers_disconnect_by_func(pdata->widget, G_CALLBACK(widget_notify_cb), obj); + g_object_remove_weak_pointer(G_OBJECT(pdata->widget), (gpointer*)&pdata->widget); + } + + if (pdata != NULL && pdata->shell != NULL) { + g_signal_handlers_disconnect_by_func(pdata->shell, G_CALLBACK(child_added_cb), obj); + g_object_remove_weak_pointer(G_OBJECT(pdata->shell), (gpointer*)&pdata->shell); + } + + if (pdata != NULL && pdata->image != NULL) { + g_signal_handlers_disconnect_by_func(pdata->image, G_CALLBACK(image_notify_cb), obj); + g_object_remove_weak_pointer(G_OBJECT(pdata->image), (gpointer*)&pdata->image); + } + + return; +} + +/* Called if we replace the cache on the object with a new + dbusmenu menuitem */ +static void +object_cache_freed (gpointer data) +{ + // TODO: make this have access to both data and obj so we can call these + //if (!G_IS_OBJECT(obj)) return; + //g_object_weak_unref(G_OBJECT(obj), dbusmenu_cache_freed, data); + //dbusmenu_cache_freed(data, obj); + + g_signal_handlers_disconnect_by_func(gtk_icon_theme_get_default(), G_CALLBACK(theme_changed_cb), data); + + return; +} + +/* Gets the positon of the child with its' parent if it has one. + Returns -1 if the position is unable to be calculated. */ +static gint +get_child_position (GtkWidget * child) +{ + GtkWidget * parent = gtk_widget_get_parent (child); + if (parent == NULL || !GTK_IS_CONTAINER (parent)) + return -1; + + GList * children = gtk_container_get_children (GTK_CONTAINER (parent)); + GList * iter; + gint position = 0; + + for (iter = children; iter != NULL; iter = iter->next) { + if (iter->data == child) + break; + ++position; + } + + g_list_free (children); + + if (iter == NULL) + return -1; + else + return position; +} + +/* Creates a new menu item that is attached to the widget and has + the data linkages hooked up. Also allocates the ParserData */ +static DbusmenuMenuitem * +new_menuitem (GtkWidget * widget) +{ + DbusmenuMenuitem * item = dbusmenu_menuitem_new(); + + ParserData *pdata = g_new0 (ParserData, 1); + g_object_set_data_full(G_OBJECT(item), PARSER_DATA, pdata, g_free); + + g_object_set_data_full(G_OBJECT(widget), CACHED_MENUITEM, item, object_cache_freed); + g_object_weak_ref(G_OBJECT(item), dbusmenu_cache_freed, widget); + + return item; +} + +static void +parse_menu_structure_helper (GtkWidget * widget, RecurseContext * recurse) +{ + + /* If this is a shell, then let's handle the items in it. */ + if (GTK_IS_MENU_SHELL (widget)) { + /* Okay, this is a little janky and all.. but some applications update some + * menuitem properties such as sensitivity on the activate callback. This + * seems a little weird, but it's not our place to judge when all this code + * is so crazy. So we're going to get ever crazier and activate all the + * menus that are directly below the menubar and force the applications to + * update their sensitivity. The menus won't actually popup in the app + * window due to our gtk+ patches. + * + * Note that this will not force menuitems in submenus to be updated as well. + */ + if (recurse->parent == NULL && GTK_IS_MENU_BAR(widget)) { + GList *children = gtk_container_get_children (GTK_CONTAINER (widget)); + GList *iter; + + for (iter = children; iter != NULL; iter = iter->next) { + gtk_menu_shell_activate_item (GTK_MENU_SHELL (widget), + iter->data, + TRUE); + } + + g_list_free (children); + } + + if (recurse->parent == NULL) { + recurse->parent = new_menuitem(widget); + } + + ParserData *pdata = (ParserData *)g_object_get_data(G_OBJECT(recurse->parent), PARSER_DATA); + + pdata->shell = widget; + g_signal_connect (G_OBJECT (widget), + "child-added", + G_CALLBACK (child_added_cb), + recurse->parent); + g_object_add_weak_pointer(G_OBJECT (widget), (gpointer*)&pdata->shell); + + gtk_container_foreach (GTK_CONTAINER (widget), + (GtkCallback)parse_menu_structure_helper, + recurse); + return; + } + + if (GTK_IS_MENU_ITEM(widget)) { + DbusmenuMenuitem * thisitem = NULL; + + /* Check to see if we're cached already */ + gpointer pmi = g_object_get_data(G_OBJECT(widget), CACHED_MENUITEM); + if (pmi != NULL) { + thisitem = DBUSMENU_MENUITEM(pmi); + g_object_ref(G_OBJECT(thisitem)); + } + + /* We don't have one, so we'll need to build it */ + if (thisitem == NULL) { + thisitem = construct_dbusmenu_for_widget (widget); + + if (!gtk_widget_get_visible (widget)) { + g_signal_connect (G_OBJECT (widget), + "notify::visible", + G_CALLBACK (menuitem_notify_cb), + recurse->toplevel); + } + + if (GTK_IS_TEAROFF_MENU_ITEM (widget)) { + dbusmenu_menuitem_property_set_bool (thisitem, + DBUSMENU_MENUITEM_PROP_VISIBLE, + FALSE); + } + } + + /* Check to see if we're in our parents list of children, if we have + a parent. */ + if (recurse->parent != NULL) { + GList * children = dbusmenu_menuitem_get_children (recurse->parent); + GList * peek = NULL; + + if (children != NULL) { + peek = g_list_find (children, thisitem); + } + + /* Oops, let's tell our parents about us */ + if (peek == NULL) { + /* TODO: Should we set a weak ref on the parent? */ + g_object_set_data (G_OBJECT (thisitem), + "dbusmenu-parent", + recurse->parent); + gint pos = get_child_position (widget); + if (pos >= 0) + dbusmenu_menuitem_child_add_position (recurse->parent, + thisitem, + pos); + else + dbusmenu_menuitem_child_append (recurse->parent, + thisitem); + } + } + + GtkWidget *menu = gtk_menu_item_get_submenu (GTK_MENU_ITEM (widget)); + if (menu != NULL) { + DbusmenuMenuitem * parent_save = recurse->parent; + recurse->parent = thisitem; + parse_menu_structure_helper (menu, recurse); + recurse->parent = parent_save; + } + + if (recurse->parent == NULL) { + recurse->parent = thisitem; + } else { + g_object_unref(thisitem); + } + } + + return; +} + +/* Turn a widget into a dbusmenu item depending on the type of GTK + object that it is. */ +static DbusmenuMenuitem * +construct_dbusmenu_for_widget (GtkWidget * widget) +{ + /* If it's a subclass of our serializable menu item then we can + use its own build function */ + if (DBUSMENU_IS_GTK_SERIALIZABLE_MENU_ITEM(widget)) { + DbusmenuGtkSerializableMenuItem * smi = DBUSMENU_GTK_SERIALIZABLE_MENU_ITEM(widget); + return dbusmenu_gtk_serializable_menu_item_build_menuitem(smi); + } + + /* If it's a standard GTK Menu Item we need to do some of our own work */ + if (GTK_IS_MENU_ITEM (widget)) + { + DbusmenuMenuitem *mi = new_menuitem(widget); + + ParserData *pdata = (ParserData *)g_object_get_data(G_OBJECT(mi), PARSER_DATA); + + gboolean visible = FALSE; + gboolean sensitive = FALSE; + if (GTK_IS_SEPARATOR_MENU_ITEM (widget)) + { + dbusmenu_menuitem_property_set (mi, + "type", + "separator"); + + visible = gtk_widget_get_visible (widget); + sensitive = gtk_widget_get_sensitive (widget); + } + else + { + g_signal_connect (widget, + "accel-closures-changed", + G_CALLBACK (accel_changed), + mi); + + if (GTK_IS_CHECK_MENU_ITEM (widget)) + { + dbusmenu_menuitem_property_set (mi, + DBUSMENU_MENUITEM_PROP_TOGGLE_TYPE, + gtk_check_menu_item_get_draw_as_radio (GTK_CHECK_MENU_ITEM (widget)) ? DBUSMENU_MENUITEM_TOGGLE_RADIO : DBUSMENU_MENUITEM_TOGGLE_CHECK); + + dbusmenu_menuitem_property_set_int (mi, + DBUSMENU_MENUITEM_PROP_TOGGLE_STATE, + gtk_check_menu_item_get_active (GTK_CHECK_MENU_ITEM (widget)) ? DBUSMENU_MENUITEM_TOGGLE_STATE_CHECKED : DBUSMENU_MENUITEM_TOGGLE_STATE_UNCHECKED); + + g_signal_connect (widget, + "activate", + G_CALLBACK (checkbox_toggled), + mi); + } + + if (GTK_IS_IMAGE_MENU_ITEM (widget)) + { + GtkWidget *image; + + image = gtk_image_menu_item_get_image (GTK_IMAGE_MENU_ITEM (widget)); + + if (GTK_IS_IMAGE (image)) + { + update_icon (mi, GTK_IMAGE (image)); + + /* Watch for theme changes because if gicon changes, we want to send a + different pixbuf. */ + g_signal_connect(G_OBJECT(gtk_icon_theme_get_default()), + "changed", G_CALLBACK(theme_changed_cb), widget); + + pdata->image = image; + g_signal_connect (G_OBJECT (image), + "notify", + G_CALLBACK (image_notify_cb), + mi); + g_object_add_weak_pointer(G_OBJECT (image), (gpointer*)&pdata->image); + } + } + + GtkWidget *label = find_menu_label (widget); + + if (label) + { + // Sometimes, an app will directly find and modify the label + // (like empathy), so watch the label especially for that. + dbusmenu_menuitem_property_set (mi, + "label", + gtk_label_get_text (GTK_LABEL (label))); + + pdata->label = label; + g_signal_connect (G_OBJECT (label), + "notify", + G_CALLBACK (label_notify_cb), + mi); + g_object_add_weak_pointer(G_OBJECT (label), (gpointer*)&pdata->label); + } + + if (GTK_IS_ACTIVATABLE (widget)) + { + GtkActivatable *activatable = GTK_ACTIVATABLE (widget); + + if (gtk_activatable_get_use_action_appearance (activatable)) + { + GtkAction *action = gtk_activatable_get_related_action (activatable); + + if (action) + { + visible = gtk_action_is_visible (action); + sensitive = gtk_action_is_sensitive (action); + + pdata->action = action; + g_signal_connect_object (action, "notify", + G_CALLBACK (action_notify_cb), + mi, + G_CONNECT_AFTER); + g_object_add_weak_pointer(G_OBJECT (action), (gpointer*)&pdata->action); + } + } + } + + if (!g_object_get_data (G_OBJECT (widget), "gtk-empty-menu-item") && !GTK_IS_TEAROFF_MENU_ITEM (widget)) + { + visible = gtk_widget_get_visible (widget); + sensitive = gtk_widget_get_sensitive (widget); + } + + dbusmenu_menuitem_property_set_shortcut_menuitem (mi, GTK_MENU_ITEM (widget)); + + g_signal_connect (G_OBJECT (mi), + DBUSMENU_MENUITEM_SIGNAL_ITEM_ACTIVATED, + G_CALLBACK (item_activated), + widget); + + g_signal_connect (G_OBJECT (mi), + DBUSMENU_MENUITEM_SIGNAL_ABOUT_TO_SHOW, + G_CALLBACK (item_about_to_show), + widget); + } + + dbusmenu_menuitem_property_set_bool (mi, + DBUSMENU_MENUITEM_PROP_VISIBLE, + visible); + + dbusmenu_menuitem_property_set_bool (mi, + DBUSMENU_MENUITEM_PROP_ENABLED, + sensitive); + + pdata->widget = widget; + g_signal_connect (widget, + "notify", + G_CALLBACK (widget_notify_cb), + mi); + g_object_add_weak_pointer(G_OBJECT (widget), (gpointer*)&pdata->widget); + + return mi; + } + + /* If it's none of those we're going to just create a + generic menuitem as a place holder for it. */ + return new_menuitem(widget); +} + +static void +menuitem_notify_cb (GtkWidget *widget, + GParamSpec *pspec, + gpointer data) +{ + if (pspec->name == g_intern_static_string ("visible")) + { + GtkWidget * new_toplevel = gtk_widget_get_toplevel (widget); + GtkWidget * old_toplevel = GTK_WIDGET(data); + + if (new_toplevel == old_toplevel) { + /* TODO: Figure this out -> rebuild (context->bridge, window); */ + } + + /* We only care about this once, so let's disconnect now. */ + g_signal_handlers_disconnect_by_func (widget, + G_CALLBACK (menuitem_notify_cb), + data); + } +} + +static void +accel_changed (GtkWidget *widget, + gpointer data) +{ + DbusmenuMenuitem *mi = (DbusmenuMenuitem *)data; + dbusmenu_menuitem_property_set_shortcut_menuitem (mi, GTK_MENU_ITEM (widget)); +} + +static void +checkbox_toggled (GtkWidget *widget, DbusmenuMenuitem *mi) +{ + dbusmenu_menuitem_property_set_int (mi, + DBUSMENU_MENUITEM_PROP_TOGGLE_STATE, + gtk_check_menu_item_get_active (GTK_CHECK_MENU_ITEM (widget)) ? DBUSMENU_MENUITEM_TOGGLE_STATE_CHECKED : DBUSMENU_MENUITEM_TOGGLE_STATE_UNCHECKED); +} + +static void +update_icon (DbusmenuMenuitem *menuitem, GtkImage *image) +{ + GdkPixbuf * pixbuf = NULL; + const gchar * icon_name = NULL; + GtkStockItem stock; + GIcon * gicon; + GtkIconInfo * info; + gint width; + + if (image != NULL && should_show_image (image)) { + switch (gtk_image_get_storage_type (image)) { + case GTK_IMAGE_PIXBUF: + pixbuf = g_object_ref (gtk_image_get_pixbuf (image)); + break; + + case GTK_IMAGE_ICON_NAME: + gtk_image_get_icon_name (image, &icon_name, NULL); + break; + + case GTK_IMAGE_STOCK: + gtk_image_get_stock (image, (gchar **) &icon_name, NULL); + if (gtk_stock_lookup (icon_name, &stock)) { + /* Now set label too */ + const gchar * label = NULL; + label = dbusmenu_menuitem_property_get (menuitem, + DBUSMENU_MENUITEM_PROP_LABEL); + if (stock.label != NULL && label != NULL) { + dbusmenu_menuitem_property_set (menuitem, + DBUSMENU_MENUITEM_PROP_LABEL, + stock.label); + } + } + break; + + case GTK_IMAGE_GICON: + /* Load up a pixbuf and send that over. We don't bother differentiating + between icon-name gicons and pixbuf gicons because even when given a + icon-name gicon, there's no easy way to lookup which icon-name among + its set is present and should be used among the icon themes available. + So instead, we render to a pixbuf and watch icon theme changes. */ + gtk_image_get_gicon (image, &gicon, NULL); + gtk_icon_size_lookup(GTK_ICON_SIZE_MENU, &width, NULL); + info = gtk_icon_theme_lookup_by_gicon (gtk_icon_theme_get_default (), + gicon, width, + GTK_ICON_LOOKUP_FORCE_SIZE); + if (info != NULL) { + pixbuf = gtk_icon_info_load_icon (info, NULL); + gtk_icon_info_free (info); + } + break; + + default: + g_debug ("Could not handle image type %i\n", gtk_image_get_storage_type (image)); + break; + } + } + + if (icon_name != NULL) { + dbusmenu_menuitem_property_set (menuitem, + DBUSMENU_MENUITEM_PROP_ICON_NAME, + icon_name); + dbusmenu_menuitem_property_remove (menuitem, + DBUSMENU_MENUITEM_PROP_ICON_DATA); + } + else if (pixbuf != NULL) { + dbusmenu_menuitem_property_remove (menuitem, + DBUSMENU_MENUITEM_PROP_ICON_NAME); + dbusmenu_menuitem_property_set_image (menuitem, + DBUSMENU_MENUITEM_PROP_ICON_DATA, + pixbuf); + } + else { + dbusmenu_menuitem_property_remove (menuitem, + DBUSMENU_MENUITEM_PROP_ICON_NAME); + dbusmenu_menuitem_property_remove (menuitem, + DBUSMENU_MENUITEM_PROP_ICON_DATA); + } + + if (pixbuf != NULL) { + g_object_unref (pixbuf); + } +} + +static GtkWidget * +find_menu_label (GtkWidget *widget) +{ + GtkWidget *label = NULL; + + if (GTK_IS_LABEL (widget)) + return widget; + + if (GTK_IS_CONTAINER (widget)) + { + GList *children; + GList *l; + + children = gtk_container_get_children (GTK_CONTAINER (widget)); + + for (l = children; l; l = l->next) + { + label = find_menu_label (l->data); + + if (label) + break; + } + + g_list_free (children); + } + + return label; +} + +static void +label_notify_cb (GtkWidget *widget, + GParamSpec *pspec, + gpointer data) +{ + DbusmenuMenuitem *child = (DbusmenuMenuitem *)data; + + if (pspec->name == g_intern_static_string ("label")) + { + dbusmenu_menuitem_property_set (child, + DBUSMENU_MENUITEM_PROP_LABEL, + gtk_label_get_text (GTK_LABEL (widget))); + } +} + +static void +image_notify_cb (GtkWidget *widget, + GParamSpec *pspec, + gpointer data) +{ + DbusmenuMenuitem *mi = (DbusmenuMenuitem *)data; + + if (pspec->name == g_intern_static_string ("file") || + pspec->name == g_intern_static_string ("gicon") || + pspec->name == g_intern_static_string ("icon-name") || + pspec->name == g_intern_static_string ("icon-set") || + pspec->name == g_intern_static_string ("image") || + pspec->name == g_intern_static_string ("mask") || + pspec->name == g_intern_static_string ("pixbuf") || + pspec->name == g_intern_static_string ("pixbuf-animation") || + pspec->name == g_intern_static_string ("pixmap") || + pspec->name == g_intern_static_string ("stock") || + pspec->name == g_intern_static_string ("storage-type")) + { + update_icon (mi, GTK_IMAGE (widget)); + } +} + +static void +action_notify_cb (GtkAction *action, + GParamSpec *pspec, + gpointer data) +{ + DbusmenuMenuitem *mi = (DbusmenuMenuitem *)data; + + if (pspec->name == g_intern_static_string ("sensitive")) + { + dbusmenu_menuitem_property_set_bool (mi, + DBUSMENU_MENUITEM_PROP_ENABLED, + gtk_action_is_sensitive (action)); + } + else if (pspec->name == g_intern_static_string ("visible")) + { + dbusmenu_menuitem_property_set_bool (mi, + DBUSMENU_MENUITEM_PROP_VISIBLE, + gtk_action_is_visible (action)); + } + else if (pspec->name == g_intern_static_string ("active")) + { + dbusmenu_menuitem_property_set_int (mi, + DBUSMENU_MENUITEM_PROP_TOGGLE_STATE, + gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action)) ? DBUSMENU_MENUITEM_TOGGLE_STATE_CHECKED : DBUSMENU_MENUITEM_TOGGLE_STATE_UNCHECKED); + } + else if (pspec->name == g_intern_static_string ("label")) + { + dbusmenu_menuitem_property_set (mi, + DBUSMENU_MENUITEM_PROP_LABEL, + gtk_action_get_label (action)); + } +} + +static void +item_activated (DbusmenuMenuitem *item, guint timestamp, gpointer user_data) +{ + GtkWidget *child; + + if (user_data != NULL) + { + child = (GtkWidget *)user_data; + + if (GTK_IS_MENU_ITEM (child)) + { + gtk_menu_item_activate (GTK_MENU_ITEM (child)); + } + } +} + +static gboolean +item_about_to_show (DbusmenuMenuitem *item, gpointer user_data) +{ + GtkWidget *child; + + if (user_data != NULL) + { + child = (GtkWidget *)user_data; + + if (GTK_IS_MENU_ITEM (child)) + { + // Only called for items with submens. So we activate it here in + // case the program dynamically creates menus (like empathy does) + gtk_menu_item_activate (GTK_MENU_ITEM (child)); + } + } + + return TRUE; +} + +static void +widget_notify_cb (GtkWidget *widget, + GParamSpec *pspec, + gpointer data) +{ + DbusmenuMenuitem *child = (DbusmenuMenuitem *)data; + + if (pspec->name == g_intern_static_string ("sensitive")) + { + dbusmenu_menuitem_property_set_bool (child, + DBUSMENU_MENUITEM_PROP_ENABLED, + gtk_widget_get_sensitive (widget)); + } + else if (pspec->name == g_intern_static_string ("label")) + { + dbusmenu_menuitem_property_set (child, + DBUSMENU_MENUITEM_PROP_LABEL, + gtk_menu_item_get_label (GTK_MENU_ITEM (widget))); + } + else if (pspec->name == g_intern_static_string ("visible")) + { + dbusmenu_menuitem_property_set_bool (child, + DBUSMENU_MENUITEM_PROP_VISIBLE, + gtk_widget_get_visible (widget)); + } + else if (pspec->name == g_intern_static_string ("image") || + pspec->name == g_intern_static_string ("always-show-image")) + { + GtkWidget *image; + image = gtk_image_menu_item_get_image (GTK_IMAGE_MENU_ITEM (widget)); + update_icon (child, GTK_IMAGE (image)); + } + else if (pspec->name == g_intern_static_string ("parent")) + { + /* + * We probably should have added a 'remove' method to the + * UbuntuMenuProxy early on, but it's late in the cycle now. + */ + if (gtk_widget_get_parent (widget) == NULL) + { + g_signal_handlers_disconnect_by_func (widget, + G_CALLBACK (widget_notify_cb), + child); + + DbusmenuMenuitem *parent = g_object_get_data (G_OBJECT (child), "dbusmenu-parent"); + + if (DBUSMENU_IS_MENUITEM (parent) && DBUSMENU_IS_MENUITEM (child)) + { + dbusmenu_menuitem_child_delete (parent, child); + } + } + } + else if (pspec->name == g_intern_static_string ("submenu")) + { + /* The underlying submenu got swapped out. Let's see what it is now. */ + /* First, delete any children that may exist currently. */ + DbusmenuMenuitem * item = DBUSMENU_MENUITEM(g_object_get_data(G_OBJECT(widget), CACHED_MENUITEM)); + if (item != NULL) + { + GList * children = dbusmenu_menuitem_take_children (item); + GList * child = children; + while (child != NULL) { + g_object_unref (G_OBJECT(child->data)); + child = child->next; + } + g_list_free(children); + } + + /* Now parse new submenu. */ + RecurseContext recurse = {0}; + recurse.toplevel = gtk_widget_get_toplevel(widget); + recurse.parent = item; + + if (item != NULL) { + GtkWidget * menu = gtk_menu_item_get_submenu (GTK_MENU_ITEM (widget)); + parse_menu_structure_helper(menu, &recurse); + } else { + /* Note: it would be really odd that we wouldn't have a cached + item, but we should handle that appropriately. */ + parse_menu_structure_helper(widget, &recurse); + g_object_unref(G_OBJECT(recurse.parent)); + } + } +} + +/* A child item was added to a menu we're watching. Let's try to integrate it. */ +static void +child_added_cb (GtkContainer *menu, GtkWidget *widget, gpointer data) +{ + DbusmenuMenuitem *menuitem = (DbusmenuMenuitem *)data; + + RecurseContext recurse = {0}; + recurse.toplevel = gtk_widget_get_toplevel(GTK_WIDGET(menu)); + recurse.parent = menuitem; + + parse_menu_structure_helper(widget, &recurse); +} + +static void +theme_changed_cb (GtkIconTheme *theme, gpointer data) +{ + GtkWidget *image; + + image = gtk_image_menu_item_get_image (GTK_IMAGE_MENU_ITEM (data)); + + gpointer pmi = g_object_get_data(G_OBJECT(data), CACHED_MENUITEM); + if (pmi != NULL) { + update_icon(DBUSMENU_MENUITEM(pmi), GTK_IMAGE(image)); + } + + /* Switch signal to new theme */ + g_signal_handlers_disconnect_by_func(theme, G_CALLBACK(theme_changed_cb), data); + g_signal_connect(gtk_icon_theme_get_default(), "changed", G_CALLBACK(theme_changed_cb), data); +} + +static gboolean +should_show_image (GtkImage *image) +{ + GtkWidget *item; + + item = gtk_widget_get_ancestor (GTK_WIDGET (image), + GTK_TYPE_IMAGE_MENU_ITEM); + + if (item) + { + GtkSettings *settings; + gboolean gtk_menu_images; + + settings = gtk_widget_get_settings (item); + + g_object_get (settings, "gtk-menu-images", >k_menu_images, NULL); + + if (gtk_menu_images) + return TRUE; + + return gtk_image_menu_item_get_always_show_image (GTK_IMAGE_MENU_ITEM (item)); + } + + return FALSE; +} + |