Imported Upstream version 0.2+gitdfdad95upstream/0.2+gitdfdad95

1 files changed, 254 insertions, 0 deletions

diff --git a/src/actionGroups/menuGroup.vala b/src/actionGroups/menuGroup.vala
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+++ b/src/actionGroups/menuGroup.vala
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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
+        
+    }
+}
+
+}