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authorAlessandro Ghedini <al3xbio@gmail.com>2011-10-19 10:56:04 +0200
committerAlessandro Ghedini <al3xbio@gmail.com>2011-10-19 10:56:04 +0200
commit6451a495637c6e3047a5a56573cffc6e3de9a515 (patch)
tree7c3eb29532e7c4b36a9da13c5890664fb816959b /src/actionGroups/menuGroup.vala
Imported Upstream version 0.2+gitdfdad95upstream/0.2+gitdfdad95
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+/*
+Copyright (c) 2011 by Simon Schneegans
+
+This program is free software: you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the Free
+Software Foundation, either version 3 of the License, or (at your option)
+any later version.
+
+This program 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 General Public License for
+more details.
+
+You should have received a copy of the GNU General Public License along with
+this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+namespace GnomePie {
+
+/////////////////////////////////////////////////////////////////////////
+/// An ActionGroup which displays the user's main menu. It's a bit ugly,
+/// but it supports both, an older version and libgnome-menus-3 at the
+/// same time.
+/////////////////////////////////////////////////////////////////////////
+
+public class MenuGroup : ActionGroup {
+ /////////////////////////////////////////////////////////////////////
+ /// Used to register this type of ActionGroup. It sets the display
+ /// name for this ActionGroup, it's icon name and the string used in
+ /// the pies.conf file for this kind of ActionGroups.
+ /////////////////////////////////////////////////////////////////////
+
+ public static void register(out string name, out string icon, out string settings_name) {
+ name = _("Main menu");
+ icon = "gnome-main-menu";
+ settings_name = "menu";
+ }
+
+ /////////////////////////////////////////////////////////////////////
+ /// True, if this MenuGroup is the top most menu.
+ /////////////////////////////////////////////////////////////////////
+
+ public bool is_toplevel {get; construct set; default = true;}
+
+ /////////////////////////////////////////////////////////////////////
+ /// The menu tree displayed by the MenuGroup. Only set for the
+ /// toplevel MenuGroup.
+ /////////////////////////////////////////////////////////////////////
+
+ private GMenu.Tree menu = null;
+
+ /////////////////////////////////////////////////////////////////////
+ /// A list of all sub menus of this MenuGroup.
+ /////////////////////////////////////////////////////////////////////
+
+ private Gee.ArrayList<MenuGroup?> childs;
+
+ /////////////////////////////////////////////////////////////////////
+ /// Two members needed to avoid useless, frequent changes of the
+ /// stored Actions.
+ /////////////////////////////////////////////////////////////////////
+
+ private bool changing = false;
+ private bool changed_again = false;
+
+ /////////////////////////////////////////////////////////////////////
+ /// C'tor, initializes all members. Used for the toplevel menu.
+ /////////////////////////////////////////////////////////////////////
+
+ public MenuGroup(string parent_id) {
+ GLib.Object(parent_id : parent_id, is_toplevel : true);
+ }
+
+ /////////////////////////////////////////////////////////////////////
+ /// C'tor, initializes all members. Used for sub menus.
+ /////////////////////////////////////////////////////////////////////
+
+ public MenuGroup.sub_menu(string parent_id) {
+ GLib.Object(parent_id : parent_id, is_toplevel : false);
+ }
+
+ construct {
+ this.childs = new Gee.ArrayList<MenuGroup?>();
+
+ if (this.is_toplevel) {
+ #if HAVE_GMENU_3
+ this.menu = new GMenu.Tree("applications.menu", GMenu.TreeFlags.INCLUDE_EXCLUDED);
+ this.menu.changed.connect(this.reload);
+ #endif
+
+ this.load_toplevel();
+ }
+ }
+
+ /////////////////////////////////////////////////////////////////////
+ /// Starts to load the menu.
+ /////////////////////////////////////////////////////////////////////
+
+ private void load_toplevel() {
+ #if HAVE_GMENU_3
+ try {
+ if (this.menu.load_sync()) {
+ this.load_contents(this.menu.get_root_directory(), this.parent_id);
+ }
+ } catch (GLib.Error e) {
+ warning(e.message);
+ }
+ #else
+ this.menu = GMenu.Tree.lookup ("applications.menu", GMenu.TreeFlags.INCLUDE_EXCLUDED);
+ this.menu.add_monitor(this.reload);
+ var dir = this.menu.get_root_directory();
+ this.load_contents(dir, this.parent_id);
+ #endif
+ }
+
+ /////////////////////////////////////////////////////////////////////
+ /// Parses the main menu recursively.
+ /////////////////////////////////////////////////////////////////////
+
+ private void load_contents(GMenu.TreeDirectory dir, string parent_id) {
+ #if HAVE_GMENU_3
+ var item = dir.iter();
+
+ while (true) {
+ var type = item.next();
+ if (type == GMenu.TreeItemType.INVALID)
+ break;
+
+ if (type == GMenu.TreeItemType.DIRECTORY && !item.get_directory().get_is_nodisplay()) {
+ // create a MenuGroup for sub menus
+ string[] icons = item.get_directory().get_icon().to_string().split(" ");
+ string final_icon = "application-default-icon";
+
+ // search for available icons
+ foreach (var icon in icons) {
+ if (Gtk.IconTheme.get_default().has_icon(icon)) {
+ final_icon = icon;
+ break;
+ }
+ }
+
+ var sub_menu = PieManager.create_dynamic_pie(item.get_directory().get_name(), final_icon);
+ var group = new MenuGroup.sub_menu(sub_menu.id);
+ group.add_action(new PieAction(parent_id, true));
+ group.load_contents(item.get_directory(), sub_menu.id);
+ childs.add(group);
+
+ sub_menu.add_group(group);
+
+ this.add_action(new PieAction(sub_menu.id));
+
+ } else if (type == GMenu.TreeItemType.ENTRY ) {
+ // create an AppAction for entries
+ if (!item.get_entry().get_is_excluded()) {
+ this.add_action(ActionRegistry.new_for_app_info(item.get_entry().get_app_info()));
+ }
+ }
+ }
+ #else
+ foreach (var item in dir.get_contents()) {
+ switch(item.get_type()) {
+ case GMenu.TreeItemType.DIRECTORY:
+ // create a MenuGroup for sub menus
+ if (!((GMenu.TreeDirectory)item).get_is_nodisplay()) {
+ var sub_menu = PieManager.create_dynamic_pie(
+ ((GMenu.TreeDirectory)item).get_name(),
+ ((GMenu.TreeDirectory)item).get_icon());
+ var group = new MenuGroup.sub_menu(sub_menu.id);
+ group.add_action(new PieAction(parent_id, true));
+ group.load_contents((GMenu.TreeDirectory)item, sub_menu.id);
+ childs.add(group);
+
+ sub_menu.add_group(group);
+
+ this.add_action(new PieAction(sub_menu.id));
+ }
+ break;
+
+ case GMenu.TreeItemType.ENTRY:
+ // create an AppAction for entries
+ if (!((GMenu.TreeEntry)item).get_is_nodisplay() && !((GMenu.TreeEntry)item).get_is_excluded()) {
+ this.add_action(new AppAction(((GMenu.TreeEntry)item).get_name(),
+ ((GMenu.TreeEntry)item).get_icon(),
+ ((GMenu.TreeEntry)item).get_exec()));
+ }
+ break;
+ }
+ }
+ #endif
+ }
+
+ /////////////////////////////////////////////////////////////////////
+ /// Reloads the menu.
+ /////////////////////////////////////////////////////////////////////
+
+ private void reload() {
+ // avoid too frequent changes...
+ if (!this.changing) {
+ this.changing = true;
+ Timeout.add(500, () => {
+ if (this.changed_again) {
+ this.changed_again = false;
+ return true;
+ }
+
+ // reload
+ message("Main menu changed...");
+ #if !HAVE_GMENU_3
+ this.menu.remove_monitor(this.reload);
+ #endif
+
+ this.clear();
+ this.load_toplevel();
+
+ this.changing = false;
+ return false;
+ });
+ } else {
+ this.changed_again = true;
+ }
+ }
+
+ /////////////////////////////////////////////////////////////////////
+ /// Deletes all generated Pies, when the toplevel menu is deleted.
+ /////////////////////////////////////////////////////////////////////
+
+ public override void on_remove() {
+ if (this.is_toplevel)
+ this.clear();
+ }
+
+ /////////////////////////////////////////////////////////////////////
+ /// Clears this ActionGroup recursively.
+ /////////////////////////////////////////////////////////////////////
+
+ private void clear() {
+ foreach (var child in childs)
+ child.clear();
+
+ if (!this.is_toplevel)
+ PieManager.remove_pie(this.parent_id);
+
+ this.delete_all();
+
+ this.childs.clear();
+
+ #if !HAVE_GMENU_3
+ this.menu = null;
+ #endif
+
+ }
+}
+
+}