std/streaming.js

   1 /*
   2     Pitchfork Music Player Daemon Client
   3     Copyright (C) 2007  Roger Bystrøm
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; version 2 of the License.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License along
  15     with this program; if not, write to the Free Software Foundation, Inc.,
  16     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17 */
  18
  19 var streaming_info = null;
  20
  21 function StreamingInfo() {
  22         this.open = false;
  23         this.display = null;
  24         var c = setting_get("sap");
  25         if(c==null) {
  26                 this.auto_play = true;
  27                 setting_set("sap", "true");
  28         }
  29         else {
  30                 this.auto_play = c=="true"?true:false;
  31         }
  32         this.auto_play_node = null;
  33         this.applet = null;
  34         this.notification_txt = null;
  35         this.check_delay = 0.3 * 1000;
  36         this.eventListeners = new Array();
  37 }
  38
  39 function streaming_init() {
  40         streaming_info = new StreamingInfo();
  41 }
  42
  43 function streaming_destroy() {
  44         while(streaming_info.eventListeners.length)
  45                 streaming_info.eventListeners.pop().unregister();
  46
  47         remove_node(streaming_info.applet);
  48         remove_node(streaming_info.auto_play_node);
  49         remove_node(streaming_info.notification_txt);
  50         remove_node(streaming_info.display);
  51
  52         streaming_info.applet = null;
  53         streaming_info.auto_play_node = null;
  54         streaming_info.notification_txt = null;
  55         streaming_info.display = null;
  56
  57         streaming_info.open = false;
  58 }
  59
  60 function streaming_open(e) {
  61         var s =streaming_info.display;
  62         if(!s) {
  63                 s = create_node("div", "streaming_display");
  64                 var d2 = create_node("div");
  65                 d2.style.marginLeft = "5px";
  66                 if(!window.SHOUT_URL)
  67                         return;
  68                 /* if someone can make this work in all browsers and not crash/hang
  69                    anyone of them I'd like to know... */
  70
  71                 function make_item(txt) {
  72                         var item = create_node("li");
  73                         item.className = "fakelink";
  74                         item.style.borderLeft = item.style.borderRight = "none";
  75                         add_txt(item, txt);
  76                         return item;
  77                 }
  78
  79                 var obj = "<applet type='application/x-java-applet'" +
  80                           " width='70'" +
  81                           " height='32'" +
  82                           " id='streamplayer'" +
  83                           " style='display: inline; visibility: hidden; position: absolute;'" +
  84                           " archive='../jorbis/jorbis-pitchfork.jar'" +
  85                           " classid='java:JOrbisPlayer.class'" +
  86                           " code='JOrbisPlayer.class'" +
  87                           "<param name='archive' value='../jorbis/jorbis-pitchfork.jar' />" +
  88                           (streaming_info.auto_play?"<param name='jorbis.player.playonstartup' value='yes' />":"") +
  89                           "<param name='jorbis.player.play.0' value='"+SHOUT_URL+"' />" +
  90                           "<param name='jorbis.player.bgcolor' value='" + IMAGE.STREAM_BGCOLOR + "' />" +
  91                           "</applet>";
  92                 d2.innerHTML = obj;
  93                 s.appendChild(d2);
  94                 var txt = create_node("ul");
  95                 //txt.className = "fakelink";
  96                 txt.className = "nomargin";
  97                 //txt.style.margin = "0px 2px 0px 0px";
  98                 txt.style.padding = "0px 0px 0px 0px";
  99                 txt.style.fontSize = "smaller";
 100
 101                 var sp = create_node("span");
 102                 sp.style.fontWeight = "bold";
 103                 sp.style.padding = "5px 0px 5px 0px";
 104                 add_txt(sp, LANG.STREAMING);
 105                 txt.appendChild(sp);
 106
 107                 var item = make_item(LANG.CLOSE);
 108                 streaming_info.eventListeners.push(add_listener(item, "click", streaming_destroy));
 109                 txt.appendChild(item);
 110
 111                 item = make_item(LANG.HIDE);
 112                 streaming_info.eventListeners.push(add_listener(item, "click", streaming_hide));
 113                 txt.appendChild(item);
 114
 115                 item = make_item( streaming_info.auto_play?LANG.AUTOPLAY:LANG.NO_AUTOPLAY );
 116                 txt.appendChild(item);
 117                 streaming_info.eventListeners.push(add_listener(item, "click", streaming_toggle_auto_play));
 118                 streaming_info.auto_play_node = item;
 119
 120                 item = make_item("");
 121                 streaming_info.notification_txt = item;
 122                 txt.appendChild(streaming_info.notification_txt);
 123                 streaming_info.eventListeners.push(add_listener(streaming_info.notification_txt, "click", streaming_toggle_event));
 124
 125                 // insert container first in area
 126                 insert_first(txt, s);
 127
 128                 document.getElementById('player_control').appendChild(s);
 129                 streaming_info.display = s;
 130                 streaming_info.applet = document.applets['streamplayer'];
 131
 132                 streaming_check_playing();
 133                 document.body.focus();
 134         }
 135         if(streaming_info.open) {
 136                 streaming_hide(e);
 137         }
 138         else {
 139                 s.style.visibility = "";
 140                 streaming_info.open = true;
 141                 streaming_try_autoplay();
 142                 if(e) {
 143                         stop_event(e);
 144                 }
 145         }
 146 }
 147
 148 /* hides the whole streaming area */
 149 function streaming_hide(e) {
 150         if(streaming_info.display) {
 151                 streaming_info.display.style.visibility = "hidden";
 152         }
 153         streaming_info.open = false;
 154         if(e) {
 155                 stop_event(e);
 156         }
 157 }
 158
 159 /* toggles the autoplay feature */
 160 function streaming_toggle_auto_play(e) {
 161         if(e) stop_event(e);
 162         if(streaming_info.auto_play_node) {
 163                 var s = streaming_info.auto_play_node;
 164                 remove_children(s);
 165                 streaming_info.auto_play = !streaming_info.auto_play;
 166                 add_txt(s, streaming_info.auto_play?LANG.AUTOPLAY:LANG.NO_AUTOPLAY);
 167                 setting_set("sap", streaming_info.auto_play?"true":"false");
 168         }
 169 }
 170
 171 /* checks whether the applet is currently streaming or not,
 172  * returns false on error or non-existing applet */
 173 function streaming_is_playing() {
 174         if(streaming_info.applet) {
 175                 try {
 176                         return streaming_info.applet.isPlaying();
 177                 } catch(e) { }
 178         }
 179         return false;
 180 }
 181
 182 /* tries to start playback if the applet is available */
 183 function streaming_try_play() {
 184         if(streaming_info.applet) {
 185                 try {
 186                         streaming_info.applet.play_sound();
 187                 } catch(e) { }
 188         }
 189 }
 190
 191 /* tries to stop playback if the applet is available */
 192 function streaming_try_stop() {
 193         if(streaming_info.applet) {
 194                 try {
 195                         streaming_info.applet.stop_sound();
 196                 } catch(e) { }
 197         }
 198 }
 199
 200 /* tries to start playing if autoplay is enabled */
 201 function streaming_try_autoplay() {
 202         if(streaming_info.auto_play&&streaming_info.display&&streaming_info.applet) {
 203                 streaming_try_play();
 204         }
 205 }
 206
 207 /* tries to stop the audio playback if autoplay is enabled */
 208 function streaming_try_autostop() {
 209         if(streaming_info.auto_play&&streaming_info.display) {
 210                 streaming_try_stop();
 211         }
 212 }
 213
 214 function streaming_update_stat() {
 215         remove_children(streaming_info.notification_txt);
 216         streaming_info.notification_txt.appendChild(create_txt(streaming_info.stat?LANG.STOP:LANG.PLAY));
 217 }
 218
 219 function streaming_check_playing() {
 220         var stat = streaming_is_playing();
 221         if(streaming_info.stat != stat) {
 222                 streaming_info.stat = stat;
 223                 streaming_update_stat();
 224         }
 225         setTimeout(streaming_check_playing, streaming_info.check_delay);
 226 }
 227 function streaming_toggle_event(e) {
 228         if(e) stop_event(e);
 229         if(!streaming_is_playing()) {
 230                 streaming_try_play();
 231         } else {
 232                 streaming_try_stop();
 233         }
 234 }