service.vala: move menu handling into sound-menu.vala

This makes service.vala a lot more readable and makes way for exporting a
second - slightly different - menu for the phone profile.

1 files changed, 160 insertions, 0 deletions

diff --git a/src/sound-menu.vala b/src/sound-menu.vala
new file mode 100644
index 0000000..acb9adf
--- /dev/null
+++ b/src/sound-menu.vala
@@ -0,0 +1,160 @@
+/*
+ * Copyright 2013 Canonical Ltd.
+ *
+ * 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; version 3.
+ *
+ * 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors:
+ *      Lars Uebernickel <lars.uebernickel@canonical.com>
+ */
+
+class SoundMenu: Object
+{
+	public SoundMenu () {
+		/* A sound menu always has at least two sections: the volume section (this.volume_section)
+		 * at the start of the menu, and the settings section at the end. Between those two,
+		 * it has a dynamic amount of player sections, one for each registered player.
+		 */
+
+		this.volume_section = new Menu ();
+		volume_section.append (_("Mute"), "indicator.mute");
+		volume_section.append_item (this.create_slider_menu_item ("indicator.volume", 0.0, 1.0, 0.01,
+																  "audio-volume-low-zero-panel",
+																  "audio-volume-low-high-panel"));
+
+		this.menu = new Menu ();
+		this.menu.append_section (null, volume_section);
+		this.menu.append (_("Sound Settings…"), "indicator.settings");
+
+		var root_item = new MenuItem (null, "indicator.root");
+		root_item.set_attribute ("x-canonical-type", "s", "com.canonical.indicator.root");
+		root_item.set_submenu (this.menu);
+
+		this.root = new Menu ();
+		root.append_item (root_item);
+	}
+
+	public void export (DBusConnection connection, string object_path) throws Error {
+		connection.export_menu_model (object_path, this.root);
+	}
+
+	public bool show_mic_volume {
+		get {
+			return this.volume_section.get_n_items () == 3;
+		}
+		set {
+			if (value && this.volume_section.get_n_items () < 3) {
+				var slider = this.create_slider_menu_item ("indicator.mic-volume", 0.0, 1.0, 0.01,
+														   "audio-input-microphone-low-zero-panel",
+														   "audio-input-microphone-high-panel");
+				volume_section.append_item (slider);
+			}
+			else if (!value && this.volume_section.get_n_items () > 2) {
+				this.volume_section.remove (2);
+			}
+		}
+	}
+
+	public void add_player (MediaPlayer player) {
+		/* Add new players to the end of the player sections, just before the settings */
+		var player_item = new MenuItem (player.name, "indicator." + player.id);
+		player_item.set_attribute ("x-canonical-type", "s", "com.canonical.unity.media-player");
+		player_item.set_attribute_value ("icon", g_icon_serialize (player.icon));
+
+		var playback_item = new MenuItem (null, null);
+		playback_item.set_attribute ("x-canonical-type", "s", "com.canonical.unity.playback-item");
+		playback_item.set_attribute ("x-canonical-play-action", "s", "indicator.play." + player.id);
+		playback_item.set_attribute ("x-canonical-next-action", "s", "indicator.next." + player.id);
+		playback_item.set_attribute ("x-canonical-previous-action", "s", "indicator.previous." + player.id);
+
+		var section = new Menu ();
+		section.append_item (player_item);
+		section.append_item (playback_item);
+
+		player.playlists_changed.connect (this.update_playlists);
+		player.notify["is-running"].connect ( () => this.update_playlists (player) );
+		update_playlists (player);
+
+		this.menu.insert_section (this.menu.get_n_items () -1, null, section);
+	}
+
+	public void remove_player (MediaPlayer player) {
+		int index = this.find_player_section (player);
+		if (index >= 0)
+			this.menu.remove (index);
+	}
+
+	Menu root;
+	Menu menu;
+	Menu volume_section;
+
+	/* returns the position in this.menu of the section that's associated with @player */
+	int find_player_section (MediaPlayer player) {
+		string action_name = @"indicator.$(player.id)";
+		int n = this.menu.get_n_items () -1;
+		for (int i = 1; i < n; i++) {
+			var section = this.menu.get_item_link (i, Menu.LINK_SECTION);
+			string action;
+			section.get_item_attribute (0, "action", "s", out action);
+			if (action == action_name)
+				return i;
+		}
+
+		return -1;
+	}
+
+	void update_playlists (MediaPlayer player) {
+		int index = find_player_section (player);
+		if (index < 0)
+			return;
+
+		var player_section = this.menu.get_item_link (index, Menu.LINK_SECTION) as Menu;
+
+		/* if a section has three items, the playlists menu is in it */
+		if (player_section.get_n_items () == 3)
+			player_section.remove (2);
+
+		if (!player.is_running)
+			return;
+
+		var count = player.get_n_playlists ();
+		if (count == 0)
+			return;
+
+		var playlists_section = new Menu ();
+		for (int i = 0; i < count; i++) {
+			var playlist_id = player.get_playlist_id (i);
+			playlists_section.append (player.get_playlist_name (i),
+									  @"indicator.play-playlist.$(player.id)::$playlist_id");
+								   
+		}
+
+		var submenu = new Menu ();
+		submenu.append_section (null, playlists_section);
+		player_section.append_submenu ("Choose Playlist", submenu);
+	}
+
+	MenuItem create_slider_menu_item (string action, double min, double max, double step, string min_icon_name, string max_icon_name) {
+		var min_icon = new ThemedIcon.with_default_fallbacks (min_icon_name);
+		var max_icon = new ThemedIcon.with_default_fallbacks (max_icon_name);
+
+		var slider = new MenuItem (null, action);
+		slider.set_attribute ("x-canonical-type", "s", "com.canonical.unity.slider");
+		slider.set_attribute_value ("min-icon", g_icon_serialize (min_icon));
+		slider.set_attribute_value ("max-icon", g_icon_serialize (max_icon));
+		slider.set_attribute ("min-value", "d", min);
+		slider.set_attribute ("max-value", "d", max);
+		slider.set_attribute ("step", "d", step);
+
+		return slider;
+	}
+}