Imported Upstream version 0.2+gitdfdad95upstream/0.2+gitdfdad95

7 files changed, 879 insertions, 0 deletions

diff --git a/src/actionGroups/actionGroup.vala b/src/actionGroups/actionGroup.vala
new file mode 100644
index 0000000..a6b52ff
--- /dev/null
+++ b/src/actionGroups/actionGroup.vala
@@ -0,0 +1,75 @@
+/* 
+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 {
+
+/////////////////////////////////////////////////////////////////////////	
+// A base class storing a set of Actions. Derived classes may define
+// how these Actions are created. This base class serves for custom
+// actions, defined by the user.
+/////////////////////////////////////////////////////////////////////////
+
+public class ActionGroup : GLib.Object {
+
+    /////////////////////////////////////////////////////////////////////
+    /// A list of all stored actions.
+    /////////////////////////////////////////////////////////////////////
+    
+    public Gee.ArrayList<Action?> actions { get; private set; }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// The ID of the pie to which this group is attached.
+    /////////////////////////////////////////////////////////////////////
+    
+    public string parent_id { get; construct set; }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// C'tor, initializes all members.
+    /////////////////////////////////////////////////////////////////////
+    
+    public ActionGroup(string parent_id) {
+        GLib.Object(parent_id : parent_id);
+    }
+    
+    construct {
+        this.actions = new Gee.ArrayList<Action?>();
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// This one is called, when the ActionGroup is deleted.
+    /////////////////////////////////////////////////////////////////////
+    
+    public virtual void on_remove() {}
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Adds a new Action to the group.
+    /////////////////////////////////////////////////////////////////////
+    
+    public void add_action(Action new_action) {
+       this.actions.add(new_action);
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Removes all Actions from the group.
+    /////////////////////////////////////////////////////////////////////
+    
+    public void delete_all() {
+        actions.clear();
+    }
+}
+
+}
diff --git a/src/actionGroups/bookmarkGroup.vala b/src/actionGroups/bookmarkGroup.vala
new file mode 100644
index 0000000..f4ba66e
--- /dev/null
+++ b/src/actionGroups/bookmarkGroup.vala
@@ -0,0 +1,148 @@
+/* 
+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 {
+
+/////////////////////////////////////////////////////////////////////////    
+/// A group of Actions, which represent the users gtk-bookmarks, his home
+/// directory, desktop and trash. It stay up-to-date, even if the 
+/// bookmarks change.
+/////////////////////////////////////////////////////////////////////////
+
+public class BookmarkGroup : 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 = _("Bookmarks");
+        icon = "user-bookmarks";
+        settings_name = "bookmarks";
+    }
+
+    /////////////////////////////////////////////////////////////////////
+    /// 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.
+    /////////////////////////////////////////////////////////////////////
+    
+    public BookmarkGroup(string parent_id) {
+        GLib.Object(parent_id : parent_id);
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Construct block loads the bookmarks of the user and adds a file
+    /// monitor in order to update the BookmarkGroup when the bookmarks
+    /// of the user change.
+    /////////////////////////////////////////////////////////////////////
+    
+    construct {
+        this.load();
+        
+        // add monitor
+        var bookmark_file = GLib.File.new_for_path(
+            GLib.Environment.get_home_dir()).get_child(".gtk-bookmarks");
+            
+        if (bookmark_file.query_exists()) {
+            try {
+                var monitor = bookmark_file.monitor(GLib.FileMonitorFlags.NONE);
+                monitor.changed.connect(this.reload);
+            } catch (GLib.Error e) {
+                warning(e.message);
+            }
+        }
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Adds Actions for each gtk-bookmark of the user and for his home
+    /// folder, desktop and trash.
+    /////////////////////////////////////////////////////////////////////
+    
+    private void load() {
+        // add home folder
+        this.add_action(ActionRegistry.new_for_uri("file://" + GLib.Environment.get_home_dir()));
+        
+        // add .gtk-bookmarks
+        var bookmark_file = GLib.File.new_for_path(
+            GLib.Environment.get_home_dir()).get_child(".gtk-bookmarks");
+            
+        if (!bookmark_file.query_exists()) {
+            warning("Failed to find file \".gtk-bookmarks\"!");
+            return;
+        }
+        
+        try {
+            var dis = new DataInputStream(bookmark_file.read());
+            string line;
+            while ((line = dis.read_line(null)) != null) {
+                var parts = line.split(" ");
+                
+                string uri = parts[0];
+                string name = parts[1];
+
+                this.add_action(ActionRegistry.new_for_uri(uri, name));
+            }
+        } catch (Error e) {
+            error ("%s", e.message);
+        }
+        
+        // add trash
+        this.add_action(ActionRegistry.new_for_uri("trash:///"));
+        
+        // add desktop
+        this.add_action(ActionRegistry.new_for_uri("file://" + GLib.Environment.get_user_special_dir(GLib.UserDirectory.DESKTOP)));
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Reloads all Bookmarks. Is called when the user's gtk-bookmarks
+    /// file changes.
+    /////////////////////////////////////////////////////////////////////
+    
+    private void reload() {
+        // avoid too frequent changes...
+        if (!this.changing) {
+            this.changing = true;
+            Timeout.add(200, () => {
+                if (this.changed_again) {
+                    this.changed_again = false;
+                    return true;
+                }
+
+                // reload
+                message("Bookmarks changed...");
+                this.delete_all();
+                this.load();
+                
+                this.changing = false;
+                return false;
+            });
+        } else {
+            this.changed_again = true;
+        }    
+    }
+}
+
+}
diff --git a/src/actionGroups/clipboardGroup.vala b/src/actionGroups/clipboardGroup.vala
new file mode 100644
index 0000000..0e95b65
--- /dev/null
+++ b/src/actionGroups/clipboardGroup.vala
@@ -0,0 +1,116 @@
+/* 
+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 {
+
+/////////////////////////////////////////////////////////////////////////    
+/// This Group keeps a history of the last used Clipboard entries.
+/////////////////////////////////////////////////////////////////////////
+
+public class ClipboardGroup : ActionGroup {
+
+    /////////////////////////////////////////////////////////////////////
+    /// 
+    /////////////////////////////////////////////////////////////////////
+
+    private class ClipboardItem : GLib.Object {
+        
+        public string name { get; private set; }
+        public string icon { get; private set; }
+        
+        private Gtk.SelectionData contents;
+    
+        public ClipboardItem(Gtk.SelectionData contents) {
+            this.contents = contents.copy();
+            this.name = this.contents.get_text() ?? "";
+            this.icon = "edit-paste";
+        }
+        
+        public void paste() {
+            debug(name);
+        }
+    }
+    
+    public ClipboardGroup(string parent_id) {
+        GLib.Object(parent_id : parent_id);
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /////////////////////////////////////////////////////////////////////
+    
+    /////////////////////////////////////////////////////////////////////
+    /// 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 = _("Clipboard");
+        icon = "edit-paste";
+        settings_name = "clipboard";
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// The clipboard to be monitored.
+    /////////////////////////////////////////////////////////////////////
+    
+    private Gtk.Clipboard clipboard;
+    
+    
+    /////////////////////////////////////////////////////////////////////
+    /// The maximum remembered items of the clipboard.
+    /////////////////////////////////////////////////////////////////////
+    
+    private const int max_items = 6;
+    
+    private Gee.ArrayList<ClipboardItem?> items;
+    
+    construct {
+        this.items = new Gee.ArrayList<ClipboardItem?>();
+        this.clipboard = Gtk.Clipboard.get(Gdk.SELECTION_CLIPBOARD);
+        this.clipboard.owner_change.connect(this.on_change);
+    }
+    
+    private void on_change() {
+        if (this.clipboard.wait_is_text_available()) {
+            this.clipboard.request_contents(Gdk.Atom.intern("text/plain", false), this.add_item);
+        }
+    }
+    
+    private void add_item(Gtk.Clipboard c, Gtk.SelectionData contents) {
+        var new_item = new ClipboardItem(contents);
+        
+        if (this.items.size == this.max_items)
+            this.items.remove_at(0);
+        
+        this.items.add(new_item);
+        
+        // update slices
+        this.delete_all();
+        
+        for (int i=0; i<this.items.size; ++i) {
+            var action = new SigAction(items[i].name, items[i].icon, i.to_string());
+            action.activated.connect(() => {
+                this.items[int.parse(action.real_command)].paste();
+            });
+            this.add_action(action);
+        }
+
+    }
+}
+
+}
diff --git a/src/actionGroups/devicesGroup.vala b/src/actionGroups/devicesGroup.vala
new file mode 100644
index 0000000..3d2ced0
--- /dev/null
+++ b/src/actionGroups/devicesGroup.vala
@@ -0,0 +1,129 @@
+/* 
+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 contains all currently plugged-in devices, 
+/// such as CD-ROM's or USB-sticks.
+/////////////////////////////////////////////////////////////////////
+
+public class DevicesGroup : 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 = _("Devices");
+        icon = "harddrive";
+        settings_name = "devices";
+    }
+
+    /////////////////////////////////////////////////////////////////////
+    /// Two members needed to avoid useless, frequent changes of the 
+    /// stored Actions.
+    /////////////////////////////////////////////////////////////////////
+
+    private bool changing = false;
+    private bool changed_again = false;
+    
+    /////////////////////////////////////////////////////////////////////
+    /// The VolumeMonitor used to check for added or removed devices.
+    /////////////////////////////////////////////////////////////////////
+    
+    private GLib.VolumeMonitor monitor;
+    
+    /////////////////////////////////////////////////////////////////////
+    /// C'tor, initializes all members.
+    /////////////////////////////////////////////////////////////////////
+    
+    public DevicesGroup(string parent_id) {
+        GLib.Object(parent_id : parent_id);
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Construct block loads all currently plugged-in devices and
+    /// connects signal handlers to the VolumeMonitor.
+    /////////////////////////////////////////////////////////////////////
+    
+    construct {
+        this.monitor = GLib.VolumeMonitor.get();
+        
+        this.load();
+
+        // add monitor
+        this.monitor.mount_added.connect(this.reload);
+        this.monitor.mount_removed.connect(this.reload);
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Loads all currently plugged-in devices.
+    /////////////////////////////////////////////////////////////////////
+    
+    private void load() {
+        // add root device
+        this.add_action(new UriAction(_("Root"), "harddrive", "file:///"));
+    
+        // add all other devices
+        foreach(var mount in this.monitor.get_mounts()) {
+            // get icon
+            var icon_names = mount.get_icon().to_string().split(" ");
+            
+            string icon = "";
+            foreach (var icon_name in icon_names) {
+                if (Gtk.IconTheme.get_default().has_icon(icon_name)) {
+                    icon = icon_name;
+                    break;
+                }
+            }
+            
+            this.add_action(new UriAction(mount.get_name(), icon, mount.get_root().get_uri()));
+        }
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Reloads all devices. Is called when the VolumeMonitor changes.
+    /////////////////////////////////////////////////////////////////////
+    
+    private void reload() {
+        // avoid too frequent changes...
+        if (!this.changing) {
+            this.changing = true;
+            Timeout.add(200, () => {
+                if (this.changed_again) {
+                    this.changed_again = false;
+                    return true;
+                }
+
+                // reload
+                message("Devices changed...");
+                this.delete_all();
+                this.load();
+                
+                this.changing = false;
+                return false;
+            });
+        } else {
+            this.changed_again = true;
+        }    
+    }
+}
+
+}
diff --git a/src/actionGroups/groupRegistry.vala b/src/actionGroups/groupRegistry.vala
new file mode 100644
index 0000000..94169d5
--- /dev/null
+++ b/src/actionGroups/groupRegistry.vala
@@ -0,0 +1,89 @@
+/* 
+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 {
+
+/////////////////////////////////////////////////////////////////////////    
+/// A which has knowledge on all possible acion group types.
+/////////////////////////////////////////////////////////////////////////
+
+public class GroupRegistry : GLib.Object {
+    
+    /////////////////////////////////////////////////////////////////////
+    /// A list containing all available ActionGroup types.
+    /////////////////////////////////////////////////////////////////////
+    
+    public static Gee.ArrayList<Type> types { get; private set; }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Three maps associating a displayable name for each ActionGroup, 
+    /// an icon name and a name for the pies.conf file with it's type.
+    /////////////////////////////////////////////////////////////////////
+    
+    public static Gee.HashMap<Type, string> names { get; private set; }
+    public static Gee.HashMap<Type, string> icons { get; private set; }
+    public static Gee.HashMap<Type, string> settings_names { get; private set; }
+    
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Registers all ActionGroup types.
+    /////////////////////////////////////////////////////////////////////
+    
+    public static void init() {
+        types = new Gee.ArrayList<Type>();
+    
+        names = new Gee.HashMap<Type, string>();
+        icons = new Gee.HashMap<Type, string>();
+        settings_names = new Gee.HashMap<Type, string>();
+    
+        string name = "";
+        string icon = "";
+        string settings_name = "";
+        
+        BookmarkGroup.register(out name, out icon, out settings_name);
+        types.add(typeof(BookmarkGroup));
+        names.set(typeof(BookmarkGroup), name);
+        icons.set(typeof(BookmarkGroup), icon);
+        settings_names.set(typeof(BookmarkGroup), settings_name);
+        
+        DevicesGroup.register(out name, out icon, out settings_name);
+        types.add(typeof(DevicesGroup));
+        names.set(typeof(DevicesGroup), name);
+        icons.set(typeof(DevicesGroup), icon);
+        settings_names.set(typeof(DevicesGroup), settings_name);
+        
+        MenuGroup.register(out name, out icon, out settings_name);
+        types.add(typeof(MenuGroup));
+        names.set(typeof(MenuGroup), name);
+        icons.set(typeof(MenuGroup), icon);
+        settings_names.set(typeof(MenuGroup), settings_name);
+        
+        SessionGroup.register(out name, out icon, out settings_name);
+        types.add(typeof(SessionGroup));
+        names.set(typeof(SessionGroup), name);
+        icons.set(typeof(SessionGroup), icon);
+        settings_names.set(typeof(SessionGroup), settings_name);
+        
+//        ClipboardGroup.register(out name, out icon, out settings_name);
+//        types.add(typeof(ClipboardGroup));
+//        names.set(typeof(ClipboardGroup), name);
+//        icons.set(typeof(ClipboardGroup), icon);
+//        settings_names.set(typeof(ClipboardGroup), settings_name);
+    }
+}
+
+}
diff --git a/src/actionGroups/menuGroup.vala b/src/actionGroups/menuGroup.vala
new file mode 100644
index 0000000..07a4bd1
--- /dev/null
+++ b/src/actionGroups/menuGroup.vala
@@ -0,0 +1,254 @@
+/* 
+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
+        
+    }
+}
+
+}
diff --git a/src/actionGroups/sessionGroup.vala b/src/actionGroups/sessionGroup.vala
new file mode 100644
index 0000000..9fcab1d
--- /dev/null
+++ b/src/actionGroups/sessionGroup.vala
@@ -0,0 +1,68 @@
+/* 
+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 has three Actions: Logout, Shutdown and
+/// Reboot.
+/////////////////////////////////////////////////////////////////////
+
+public class SessionGroup : 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 = _("Session Control");
+        icon = "gnome-logout";
+        settings_name = "session";
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// C'tor, initializes all members.
+    /////////////////////////////////////////////////////////////////////
+    
+    public SessionGroup(string parent_id) {
+        GLib.Object(parent_id : parent_id);
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Construct block adds the three Actions.
+    /////////////////////////////////////////////////////////////////////
+    
+    construct {
+        this.add_action(new AppAction(_("Shutdown"), "gnome-shutdown", 
+            "dbus-send --print-reply --dest=org.gnome.SessionManager /org/gnome/SessionManager org.gnome.SessionManager.RequestShutdown"));
+            
+        this.add_action(new AppAction(_("Logout"), "gnome-session-logout", 
+            "dbus-send --print-reply --dest=org.gnome.SessionManager /org/gnome/SessionManager org.gnome.SessionManager.Logout uint32:1"));
+            
+        this.add_action(new AppAction(_("Reboot"), "gnome-session-reboot", 
+            "dbus-send --print-reply --dest=org.gnome.SessionManager /org/gnome/SessionManager org.gnome.SessionManager.RequestReboot"));
+    }
+    
+    // TODO: check for available interfaces --- these may work too:
+    // dbus-send --print-reply --system --dest=org.freedesktop.Hal /org/freedesktop/Hal/devices/computer org.freedesktop.Hal.Device.SystemPowerManagement.Shutdown
+    // dbus-send --print-reply --dest=org.kde.ksmserver /KSMServer org.kde.KSMServerInterface.logout 0 2 2 
+    // dbus-send --system --print-reply --dest="org.freedesktop.ConsoleKit" /org/freedesktop/ConsoleKit/Manager org.freedesktop.ConsoleKit.Manager.Stop
+}
+
+}