Imported Upstream version 14.04.10

1 files changed, 559 insertions, 0 deletions

diff --git a/src/menubar.vala b/src/menubar.vala
new file mode 100644
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--- /dev/null
+++ b/src/menubar.vala
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+/* -*- Mode: Vala; indent-tabs-mode: nil; tab-width: 4 -*-
+ *
+ * Copyright (C) 2011,2012 Canonical Ltd
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3 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 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/>.
+ *
+ * Authors: Robert Ancell <robert.ancell@canonical.com>
+ *          Michael Terry <michael.terry@canonical.com>
+ */
+
+private class IndicatorMenuItem : Gtk.MenuItem
+{
+    public unowned Indicator.ObjectEntry entry;
+    private Gtk.Box hbox;
+
+    public IndicatorMenuItem (Indicator.ObjectEntry entry)
+    {
+        this.entry = entry;
+        this.hbox = new Gtk.Box (Gtk.Orientation.HORIZONTAL, 3);
+        this.add (this.hbox);
+        this.hbox.show ();
+
+        if (entry.label != null)
+        {
+            entry.label.show.connect (this.visibility_changed_cb);
+            entry.label.hide.connect (this.visibility_changed_cb);
+            hbox.pack_start (entry.label, false, false, 0);
+        }
+        if (entry.image != null)
+        {
+            entry.image.show.connect (visibility_changed_cb);
+            entry.image.hide.connect (visibility_changed_cb);
+            hbox.pack_start (entry.image, false, false, 0);
+        }
+        if (entry.accessible_desc != null)
+            get_accessible ().set_name (entry.accessible_desc);
+        if (entry.menu != null)
+            set_submenu (entry.menu as Gtk.Widget);
+
+        if (has_visible_child ())
+            show ();
+    }
+
+    public bool has_visible_child ()
+    {
+        return (entry.image != null && entry.image.get_visible ()) ||
+               (entry.label != null && entry.label.get_visible ());
+    }
+
+    public void visibility_changed_cb (Gtk.Widget widget)
+    {
+        visible = has_visible_child ();
+    }
+}
+
+public class MenuBar : Gtk.MenuBar
+{
+    public Background? background { get; construct; default = null; }
+    public bool high_contrast { get; private set; default = false; }
+    public Gtk.Window? keyboard_window { get; private set; default = null; }
+    public Gtk.AccelGroup? accel_group { get; construct; }
+
+    private static const int HEIGHT = 24;
+
+    public MenuBar (Background bg, Gtk.AccelGroup ag)
+    {
+        Object (background: bg, accel_group: ag);
+    }
+
+    public override bool draw (Cairo.Context c)
+    {
+        if (background != null)
+        {
+            int x, y;
+            background.translate_coordinates (this, 0, 0, out x, out y);
+            c.save ();
+            c.translate (x, y);
+            background.draw_full (c, Background.DrawFlags.NONE);
+            c.restore ();
+        }
+
+        c.set_source_rgb (0.1, 0.1, 0.1);
+        c.paint_with_alpha (0.4);
+
+        foreach (var child in get_children ())
+        {
+            propagate_draw (child, c);
+        }
+
+        return false;
+    }
+
+    /* Due to LP #973922 the keyboard has to be loaded after the main window
+     * is shown and given focus. Therefore we don't enable the active state
+     * until now.
+     */
+    public void set_keyboard_state ()
+    {
+        onscreen_keyboard_item.set_active (UGSettings.get_boolean (UGSettings.KEY_ONSCREEN_KEYBOARD));
+    }
+
+    private string default_theme_name;
+    private List<Indicator.Object> indicator_objects;
+    private Gtk.CheckMenuItem high_contrast_item;
+    private Pid keyboard_pid = 0;
+    private Pid reader_pid = 0;
+    private Gtk.CheckMenuItem onscreen_keyboard_item;
+
+    construct
+    {
+        Gtk.Settings.get_default ().get ("gtk-theme-name", out default_theme_name);
+
+        pack_direction = Gtk.PackDirection.RTL;
+
+        if (UGSettings.get_boolean (UGSettings.KEY_SHOW_HOSTNAME))
+        {
+            var label = new Gtk.Label (Posix.utsname ().nodename);
+            label.show ();
+            var hostname_item = new Gtk.MenuItem ();
+            hostname_item.add (label);
+            hostname_item.sensitive = false;
+            hostname_item.right_justified = true;
+            hostname_item.show ();
+            append (hostname_item);
+
+            /* Hack to get a label showing on the menubar */
+            label.ensure_style ();
+            var fg = label.get_style_context ().get_color (Gtk.StateFlags.NORMAL);
+            label.override_color (Gtk.StateFlags.INSENSITIVE, fg);
+        }
+
+        /* Prevent dragging the window by the menubar */
+        try
+        {
+            var style = new Gtk.CssProvider ();
+            style.load_from_data ("* {-GtkWidget-window-dragging: false;}", -1);
+            get_style_context ().add_provider (style, Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
+        }
+        catch (Error e)
+        {
+            debug ("Internal error loading menubar style: %s", e.message);
+        }
+
+        setup_indicators ();
+
+        UnityGreeter.singleton.starting_session.connect (cleanup);
+    }
+
+    private void close_pid (ref Pid pid)
+    {
+        if (pid > 0)
+        {
+            Posix.kill (pid, Posix.SIGTERM);
+            int status;
+            Posix.waitpid (pid, out status, 0);
+            pid = 0;
+        }
+    }
+
+    public void cleanup ()
+    {
+        close_pid (ref keyboard_pid);
+        close_pid (ref reader_pid);
+    }
+
+    public override void get_preferred_height (out int min, out int nat)
+    {
+        min = HEIGHT;
+        nat = HEIGHT;
+    }
+
+    private void greeter_set_env (string key, string val)
+    {
+        GLib.Environment.set_variable (key, val, true);
+
+        /* And also set it in the DBus activation environment so that any
+         * indicator services pick it up. */
+        try
+        {
+            var proxy = new GLib.DBusProxy.for_bus_sync (GLib.BusType.SESSION,
+                                                         GLib.DBusProxyFlags.NONE, null,
+                                                         "org.freedesktop.DBus",
+                                                         "/org/freedesktop/DBus",
+                                                         "org.freedesktop.DBus",
+                                                         null);
+
+            var builder = new GLib.VariantBuilder (GLib.VariantType.ARRAY);
+            builder.add ("{ss}", key, val);
+
+            proxy.call_sync ("UpdateActivationEnvironment", new GLib.Variant ("(a{ss})", builder), GLib.DBusCallFlags.NONE, -1, null);
+        }
+        catch (Error e)
+        {
+            warning ("Could not get set environment for indicators: %s", e.message);
+            return;
+        }
+    }
+
+    private Gtk.Widget make_a11y_indicator ()
+    {
+        var a11y_item = new Gtk.MenuItem ();
+        var hbox = new Gtk.Box (Gtk.Orientation.HORIZONTAL, 3);
+        hbox.show ();
+        a11y_item.add (hbox);
+        var image = new Gtk.Image.from_file (Path.build_filename (Config.PKGDATADIR, "a11y.svg"));
+        image.show ();
+        hbox.add (image);
+        a11y_item.show ();
+        a11y_item.set_submenu (new Gtk.Menu () as Gtk.Widget);
+        onscreen_keyboard_item = new Gtk.CheckMenuItem.with_label (_("Onscreen keyboard"));
+        onscreen_keyboard_item.toggled.connect (keyboard_toggled_cb);
+        onscreen_keyboard_item.show ();
+        unowned Gtk.Menu submenu = a11y_item.submenu;
+        submenu.append (onscreen_keyboard_item);
+        high_contrast_item = new Gtk.CheckMenuItem.with_label (_("High Contrast"));
+        high_contrast_item.toggled.connect (high_contrast_toggled_cb);
+        high_contrast_item.add_accelerator ("activate", accel_group, Gdk.Key.h, Gdk.ModifierType.CONTROL_MASK, Gtk.AccelFlags.VISIBLE);
+        high_contrast_item.show ();
+        submenu.append (high_contrast_item);
+        high_contrast_item.set_active (UGSettings.get_boolean (UGSettings.KEY_HIGH_CONTRAST));
+        var item = new Gtk.CheckMenuItem.with_label (_("Screen Reader"));
+        item.toggled.connect (screen_reader_toggled_cb);
+        item.add_accelerator ("activate", accel_group, Gdk.Key.s, Gdk.ModifierType.CONTROL_MASK, Gtk.AccelFlags.VISIBLE);
+        item.show ();
+        submenu.append (item);
+        item.set_active (UGSettings.get_boolean (UGSettings.KEY_SCREEN_READER));
+        return a11y_item;
+    }
+
+    private Indicator.Object? load_indicator_file (string indicator_name)
+    {
+        string dir = Config.INDICATOR_FILE_DIR;
+        string path;
+        Indicator.Object io;
+
+        /* To stay backwards compatible, use com.canonical.indicator as the default prefix */
+        if (indicator_name.index_of_char ('.') < 0)
+            path = @"$dir/com.canonical.indicator.$indicator_name";
+        else
+            path = @"$dir/$indicator_name";
+
+        try
+        {
+            io = new Indicator.Ng.for_profile (path, "desktop_greeter");
+        }
+        catch (FileError error)
+        {
+            /* the calling code handles file-not-found; don't warn here */
+            return null;
+        }
+        catch (Error error)
+        {
+            warning ("unable to load %s: %s", indicator_name, error.message);
+            return null;
+        }
+
+        return io;
+    }
+
+    private Indicator.Object? load_indicator_library (string indicator_name)
+    {
+        // Find file, if it exists
+        string[] names_to_try = {"lib" + indicator_name + ".so",
+                                 indicator_name + ".so",
+                                 indicator_name};
+        foreach (var filename in names_to_try)
+        {
+            var full_path = Path.build_filename (Config.INDICATORDIR, filename);
+            var io = new Indicator.Object.from_file (full_path);
+            if (io != null)
+                return io;
+        }
+
+        return null;
+    }
+
+    private void load_indicator (string indicator_name)
+    {
+        if (indicator_name == "ug-accessibility")
+        {
+            var a11y_item = make_a11y_indicator ();
+            insert (a11y_item, (int) get_children ().length () - 1);
+        }
+        else
+        {
+            var io = load_indicator_file (indicator_name);
+
+            if (io == null)
+                io = load_indicator_library (indicator_name);
+
+            if (io != null)
+            {
+                indicator_objects.append (io);
+                io.entry_added.connect (indicator_added_cb);
+                io.entry_removed.connect (indicator_removed_cb);
+                foreach (var entry in io.get_entries ())
+                    indicator_added_cb (io, entry);
+            }
+        }
+    }
+
+    private void setup_indicators ()
+    {
+        /* Set indicators to run with reduced functionality */
+        greeter_set_env ("INDICATOR_GREETER_MODE", "1");
+
+        /* Don't allow virtual file systems? */
+        greeter_set_env ("GIO_USE_VFS", "local");
+        greeter_set_env ("GVFS_DISABLE_FUSE", "1");
+
+        /* Hint to have unity-settings-daemon run in greeter mode */
+        greeter_set_env ("RUNNING_UNDER_GDM", "1");
+
+        /* Let indicators know about our unique dbus name */
+        try
+        {
+            var conn = Bus.get_sync (BusType.SESSION);
+            greeter_set_env ("UNITY_GREETER_DBUS_NAME", conn.get_unique_name ());
+        }
+        catch (IOError e)
+        {
+            debug ("Could not set DBUS_NAME: %s", e.message);
+        }
+
+        debug ("LANG=%s LANGUAGE=%s", Environment.get_variable ("LANG"), Environment.get_variable ("LANGUAGE"));
+
+        var indicator_list = UGSettings.get_strv(UGSettings.KEY_INDICATORS);
+
+        var update_indicator_list = false;
+        for (var i = 0; i < indicator_list.length; i++)
+        {
+            if (indicator_list[i] == "ug-keyboard")
+            {
+                indicator_list[i] = "com.canonical.indicator.keyboard";
+                update_indicator_list = true;
+            }
+        }
+
+        if (update_indicator_list)
+            UGSettings.set_strv(UGSettings.KEY_INDICATORS, indicator_list);
+
+        foreach (var indicator in indicator_list)
+            load_indicator(indicator);
+
+        indicator_objects.sort((a, b) => {
+            int pos_a = a.get_position ();
+            int pos_b = b.get_position ();
+
+            if (pos_a < 0)
+                pos_a = 1000;
+            if (pos_b < 0)
+                pos_b = 1000;
+
+            return pos_a - pos_b;
+        });
+
+        debug ("LANG=%s LANGUAGE=%s", Environment.get_variable ("LANG"), Environment.get_variable ("LANGUAGE"));
+    }
+
+    private void keyboard_toggled_cb (Gtk.CheckMenuItem item)
+    {
+        /* FIXME: The below would be sufficient if gnome-session were running
+         * to notice and run a screen keyboard in /etc/xdg/autostart...  But
+         * since we're not running gnome-session, we hardcode onboard here. */
+        /* var settings = new Settings ("org.gnome.desktop.a11y.applications");*/
+        /*settings.set_boolean ("screen-keyboard-enabled", item.active);*/
+
+        UGSettings.set_boolean (UGSettings.KEY_ONSCREEN_KEYBOARD, item.active);
+
+        if (keyboard_window == null)
+        {
+            int id = 0;
+
+            try
+            {
+                string[] argv;
+                int onboard_stdout_fd;
+
+                Shell.parse_argv ("onboard --xid", out argv);
+                Process.spawn_async_with_pipes (null,
+                                                argv,
+                                                null,
+                                                SpawnFlags.SEARCH_PATH,
+                                                null,
+                                                out keyboard_pid,
+                                                null,
+                                                out onboard_stdout_fd,
+                                                null);
+                var f = FileStream.fdopen (onboard_stdout_fd, "r");
+                var stdout_text = new char[1024];
+                if (f.gets (stdout_text) != null)
+                    id = int.parse ((string) stdout_text);
+
+            }
+            catch (Error e)
+            {
+                warning ("Error setting up keyboard: %s", e.message);
+                return;
+            }
+
+            var keyboard_socket = new Gtk.Socket ();
+            keyboard_socket.show ();
+            keyboard_window = new Gtk.Window ();
+            keyboard_window.accept_focus = false;
+            keyboard_window.focus_on_map = false;
+            keyboard_window.add (keyboard_socket);
+            keyboard_socket.add_id (id);
+
+            /* Put keyboard at the bottom of the screen */
+            var screen = get_screen ();
+            var monitor = screen.get_monitor_at_window (get_window ());
+            Gdk.Rectangle geom;
+            screen.get_monitor_geometry (monitor, out geom);
+            keyboard_window.move (geom.x, geom.y + geom.height - 200);
+            keyboard_window.resize (geom.width, 200);
+        }
+
+        keyboard_window.visible = item.active;
+    }
+
+    private void high_contrast_toggled_cb (Gtk.CheckMenuItem item)
+    {
+        var settings = Gtk.Settings.get_default ();
+        if (item.active)
+            settings.set ("gtk-theme-name", "HighContrastInverse");
+        else
+            settings.set ("gtk-theme-name", default_theme_name);
+        high_contrast = item.active;
+        UGSettings.set_boolean (UGSettings.KEY_HIGH_CONTRAST, high_contrast);
+    }
+
+    private void screen_reader_toggled_cb (Gtk.CheckMenuItem item)
+    {
+        /* FIXME: The below would be sufficient if gnome-session were running
+         * to notice and run a screen reader in /etc/xdg/autostart...  But
+         * since we're not running gnome-session, we hardcode orca here.
+        /*var settings = new Settings ("org.gnome.desktop.a11y.applications");*/
+        /*settings.set_boolean ("screen-reader-enabled", item.active);*/
+
+        UGSettings.set_boolean (UGSettings.KEY_SCREEN_READER, item.active);
+
+        /* Hardcoded orca: */
+        if (item.active)
+        {
+            try
+            {
+                string[] argv;
+                Shell.parse_argv ("orca --replace --no-setup --disable splash-window,", out argv);
+                Process.spawn_async (null,
+                                     argv,
+                                     null,
+                                     SpawnFlags.SEARCH_PATH,
+                                     null,
+                                     out reader_pid);
+                // This is a workaroud for bug https://launchpad.net/bugs/944159
+                // The problem is that orca seems to not notice that it's in a
+                // password field on startup.  We just need to kick orca in the
+                // pants.  We do this two ways:  a racy way and a non-racy way.
+                // We kick it after a second which is ideal if we win the race,
+                // because the user gets to hear what widget they are in, and
+                // the first character will be masked.  Otherwise, if we lose
+                // that race, the first time the user types (see
+                // DashEntry.key_press_event), we will kick orca again.  While
+                // this is not racy with orca startup, it is racy with whether
+                // orca will read the first character or not out loud.  Hence
+                // why we do both.  Ideally this would be fixed in orca itself.
+                UnityGreeter.singleton.orca_needs_kick = true;
+                Timeout.add_seconds (1, () => {
+                    Signal.emit_by_name ((get_toplevel () as Gtk.Window).get_focus ().get_accessible (), "focus-event", true);
+                    return false;
+                });
+            }
+            catch (Error e)
+            {
+                warning ("Failed to run Orca: %s", e.message);
+            }
+        }
+        else
+            close_pid (ref reader_pid);
+    }
+
+    private uint get_indicator_index (Indicator.Object object)
+    {
+        uint index = 0;
+
+        foreach (var io in indicator_objects)
+        {
+            if (io == object)
+                return index;
+            index++;
+        }
+
+        return index;
+    }
+
+    private Indicator.Object? get_indicator_object_from_entry (Indicator.ObjectEntry entry)
+    {
+        foreach (var io in indicator_objects)
+        {
+            foreach (var e in io.get_entries ())
+            {
+                if (e == entry)
+                    return io;
+            }
+        }
+
+        return null;
+    }
+
+    private void indicator_added_cb (Indicator.Object object, Indicator.ObjectEntry entry)
+    {
+        var index = get_indicator_index (object);
+        var pos = 0;
+        foreach (var child in get_children ())
+        {
+            if (!(child is IndicatorMenuItem))
+                break;
+
+            var menuitem = (IndicatorMenuItem) child;
+            var child_object = get_indicator_object_from_entry (menuitem.entry);
+            var child_index = get_indicator_index (child_object);
+            if (child_index > index)
+                break;
+            pos++;
+        }
+
+        debug ("Adding indicator object %p at position %d", entry, pos);
+
+        var menuitem = new IndicatorMenuItem (entry);
+        insert (menuitem, pos);
+    }
+
+    private void indicator_removed_cb (Indicator.Object object, Indicator.ObjectEntry entry)
+    {
+        debug ("Removing indicator object %p", entry);
+
+        foreach (var child in get_children ())
+        {
+            var menuitem = (IndicatorMenuItem) child;
+            if (menuitem.entry == entry)
+            {
+                remove (child);
+                return;
+            }
+        }
+
+        warning ("Indicator object %p not in menubar", entry);
+    }
+}