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  • Committer: Jiří Janoušek
  • Date: 2011-08-23 23:07:29 UTC
  • Revision ID: janousek.jiri@gmail.com-20110823230729-0lfuuttyps70qd58
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src/frame.vala
 
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/*
 
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Google Music Frame
 
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Copyright 2011 Jiří Janoušek <janousek.jiri@gmail.com>
 
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This program is free software: you can redistribute it and/or modify it 
 
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under the terms of the GNU General Public License version 3, as published 
 
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by the Free Software Foundation.
 
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This program is distributed in the hope that it will be useful, but 
 
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WITHOUT ANY WARRANTY; without even the implied warranties of 
 
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MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR 
 
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PURPOSE.  See the GNU General Public License for more details.
 
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You should have received a copy of the GNU General Public License along 
 
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with this program.  If not, see <http://www.gnu.org/licenses/>.
 
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*/
 
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/* TODO:
 
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 * Save UI state (window dimensions)
 
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 * Handle opening links in web browser
 
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 */
 
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using Gtk;
 
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using WebKit;
 
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using Soup;
 
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using Gee;
 
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using Fenryxo;
 
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namespace GMF{
 
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        public class Frame: Window{
 
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                private const string TITLE = "Google Music Frame";
 
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                private const string HOME_URL = "http://music.google.com/";
 
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                private ConfigFile config;
 
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                private WebView view;
 
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                private unowned WebFrame info_frame;
 
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                public bool can_prev {get; private set;} 
 
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                public bool can_next {get; private set;} 
 
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                public string? playback_state {get; private set;} 
 
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                public string? album_art {get; private set;} 
 
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                public string? artist {get; private set;} 
 
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                public string? song {get; private set;} 
 
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                public signal void song_changed(string? art, string? artist, string? title);
 
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                public signal void playback_state_changed(string state, bool can_prev, bool can_next);
 
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                public class Frame(Application app){
 
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                        this.config = app.config;
 
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                        this.init_ui();
 
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                }
 
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                private void init_ui(){
 
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                        this.destroy.connect(Gtk.main_quit);
 
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                        this.set_default_size(800, 600);
 
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                        this.title = TITLE;
 
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                        this.view = new WebView();
 
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                        var sw = new ScrolledWindow(null, null);
 
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                        sw.set_policy (PolicyType.AUTOMATIC, PolicyType.AUTOMATIC);
 
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                        sw.add(this.view);
 
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                        sw.show_all();
 
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                        this.add(sw);
 
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                        /* Show page title as window title */
 
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                        this.view.title_changed.connect((source, frame, title) => {
 
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                                this.title = title;
 
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                        });
 
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                        /* Save current URI to restore previous view on startup */
 
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                        this.view.notify["uri"].connect((o, p) => {
 
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                                this.config["last_uri"] = (o as WebView).uri;
 
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                                this.config.save();
 
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                                debug("URI: %s\n", (o as WebView).uri);
 
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                        });
 
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                        this.view.document_load_finished.connect(this.load_scripts);
 
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                }
 
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                /**
 
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                 * Load Google Music and show GUI
 
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                 */
 
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                public void start(){
 
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                        this.view.open(this.config["last_uri"] ?? this.HOME_URL);
 
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                        this.show();
 
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                        this.view.get_inspector().show();
 
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                }
 
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                private void load_scripts(WebFrame frame){
 
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                        debug("load scripts");
 
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                        if(frame != this.view.get_main_frame()) return;
 
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                        var script = get_data_file(APPNAME + "/scripts/main.js");
 
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                        string data;
 
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                        if(script.load_contents(null, out data)){
 
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                                debug("execute script");
 
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                                this.view.execute_script(data);
 
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                                debug("get info frame");
 
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                                unowned WebFrame info_frame = frame.find_frame("GMF_iframe");
 
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                                if(info_frame != null){
 
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                                        debug("got info frame");
 
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                                        this.info_frame = info_frame;
 
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                                        this.info_frame.title_changed.connect(() => {this.update_info();} );
 
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                                        this.update_info();
 
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                                }
 
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                                else debug("ERROR: getting frame");
 
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                        }
 
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                        else debug("ERROR: loading script");
 
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                }
 
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                private void update_info(){
 
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                        var title = this.info_frame.title;
 
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                        if(title != null && title != ""){
 
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                                        string[] parts = this.info_frame.title.split("#@!@#");
 
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                                        this.playback_state = parts[0];
 
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                                        this.can_prev = parts[1] == "true";
 
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                                        this.can_next = parts[2] == "true";
 
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                                        if(parts.length == 6){
 
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                                                this.album_art = parts[3];
 
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                                                this.artist = parts[4];
 
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                                                this.song = parts[5];
 
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                                        }
 
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                        }
 
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                        else{
 
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                                this.playback_state = "none";
 
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                                this.can_prev = false;
 
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                                this.can_next = false;
 
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                                this.album_art = null;
 
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                                this.artist = null;
 
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                                this.song = null;
 
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                        }
 
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                        this.playback_state_changed(this.playback_state, this.can_prev, this.can_next);
 
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                        this.song_changed(this.album_art, this.artist, this.song);
 
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                }
 
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                public void command(string cmd){
 
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                        debug("Frame command %s", cmd);
 
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                        this.view.execute_script("SJBpost('" + cmd + "'); $GMF.update();");
 
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                }
 
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        }
 
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}