--- a/scripts/ajax.js Sun Mar 23 15:24:06 2008 -0400
+++ b/scripts/ajax.js Sun Mar 23 20:24:33 2008 -0400
@@ -1,1 +1,244 @@
-// Hello world
+/**
+ * AJAX functions
+ *
+ * Web control interface script for Amarok
+ * Written by Dan Fuhry - 2008
+ *
+ * This script is in the public domain. Use it for good, not evil.
+ */
+
+var ajax;
+var is_playing = false, current_track = -1, current_track_length, current_track_pos, ct_advance_timeout = false, ct_counter = false, playlist_md5 = false;
+
+function ajaxGet(uri, f)
+{
+ if (window.XMLHttpRequest)
+ {
+ ajax = new XMLHttpRequest();
+ }
+ else
+ {
+ if (window.ActiveXObject) {
+ ajax = new ActiveXObject("Microsoft.XMLHTTP");
+ }
+ else
+ {
+ alert('AmaroK client-side runtime error: No AJAX support, unable to continue');
+ return;
+ }
+ }
+ ajax.onreadystatechange = f;
+ ajax.open('GET', uri, true);
+ ajax.setRequestHeader( "If-Modified-Since", "Sat, 1 Jan 2000 00:00:00 GMT" );
+ ajax.send(null);
+}
+
+function ajaxPost(uri, parms, f)
+{
+ if (window.XMLHttpRequest)
+ {
+ ajax = new XMLHttpRequest();
+ }
+ else
+ {
+ if (window.ActiveXObject)
+ {
+ ajax = new ActiveXObject("Microsoft.XMLHTTP");
+ }
+ else
+ {
+ alert('AmaroK client-side runtime error: No AJAX support, unable to continue');
+ return;
+ }
+ }
+ ajax.onreadystatechange = f;
+ ajax.open('POST', uri, true);
+ ajax.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
+ // Setting Content-length in Safari triggers a warning
+ if ( !is_Safari )
+ {
+ ajax.setRequestHeader("Content-length", parms.length);
+ }
+ ajax.setRequestHeader("Connection", "close");
+ ajax.send(parms);
+}
+
+function setAjaxLoading()
+{
+ $('ajax_status').object.src = img_ajax;
+}
+
+function unsetAjaxLoading()
+{
+ $('ajax_status').object.src = 'about:blank';
+}
+
+var refresh_playlist = function()
+{
+ setAjaxLoading();
+ ajaxGet('/action.json/refresh', function()
+ {
+ if ( ajax.readyState == 4 && ajax.status == 200 )
+ {
+ unsetAjaxLoading();
+ var response = (' ' + ajax.responseText).substr(1);
+ // quickie JSON parser :)
+ response = eval('(' + response + ')');
+ // has the playlist been modified?
+ if ( playlist_md5 )
+ {
+ if ( response.playlist_hash != playlist_md5 )
+ {
+ // playlist has changed, reload
+ window.location.reload();
+ return false;
+ }
+ }
+ playlist_md5 = response.playlist_hash;
+ // update track number
+ if ( response.current_track != current_track )
+ {
+ var ot_id = 'track_' + current_track;
+ var nt_id = 'track_' + response.current_track;
+ current_track = response.current_track;
+ if ( $(ot_id).hasClass('current') )
+ {
+ $(ot_id).rmClass('current');
+ }
+ if ( ! $(nt_id).hasClass('current') )
+ {
+ $(nt_id).addClass('current');
+ }
+ }
+ // update playing status
+ var img = $('btn_playpause').object.getElementsByTagName('img')[0];
+ is_playing = response.is_playing;
+ if ( is_playing )
+ {
+ img.src = img_pause;
+ }
+ else
+ {
+ img.src = img_play;
+ }
+ // update volume
+ if ( response.volume != current_volume )
+ {
+ set_volume_fill(response.volume);
+ current_volume = response.volume;
+ }
+ // auto-refresh on track advance
+ if ( ct_advance_timeout )
+ {
+ clearTimeout(ct_advance_timeout);
+ }
+ var time_remaining = response.current_track_length - response.current_track_pos;
+ current_track_length = response.current_track_length;
+ current_track_pos = response.current_track_pos;
+ if ( ct_counter )
+ clearInterval(ct_counter);
+ update_clock();
+ if ( is_playing )
+ {
+ ct_advance_timeout = setTimeout(refresh_playlist, ( 1000 * time_remaining ));
+ ct_counter = setInterval(update_clock, 1000);
+ }
+ }
+ });
+}
+
+function player_action(action)
+{
+ var act2 = action;
+ setAjaxLoading();
+ ajaxGet('/action.json/' + action, function()
+ {
+ if ( ajax.readyState == 4 && ajax.status == 200 )
+ {
+ unsetAjaxLoading();
+ refresh_playlist();
+ }
+ });
+}
+
+function jump_to_song(tid)
+{
+ setAjaxLoading();
+ if ( tid == current_track )
+ return false;
+ ajaxGet('/action.json/jump/' + tid, function()
+ {
+ if ( ajax.readyState == 4 && ajax.status == 200 )
+ {
+ unsetAjaxLoading();
+ var response = (' ' + ajax.responseText).substr(1);
+ // quickie JSON parser :)
+ response = eval('(' + response + ')');
+
+ // update track number
+ var ot_id = 'track_' + current_track;
+ var nt_id = 'track_' + tid;
+ current_track = tid;
+ if ( $(ot_id).hasClass('current') )
+ {
+ $(ot_id).rmClass('current');
+ }
+ if ( ! $(nt_id).hasClass('current') )
+ {
+ $(nt_id).addClass('current');
+ }
+ // update playing status
+ var img = $('btn_playpause').object.getElementsByTagName('img')[0];
+ is_playing = true;
+ img.src = img_play;
+ // auto-refresh on track advance
+ if ( ct_advance_timeout )
+ {
+ clearTimeout(ct_advance_timeout);
+ }
+ if ( ct_counter )
+ clearInterval(ct_counter);
+ var time_remaining = response.current_track_length - response.current_track_pos;
+ current_track_length = response.current_track_length;
+ current_track_pos = response.current_track_pos;
+ if ( is_playing )
+ {
+ ct_advance_timeout = setTimeout(refresh_playlist, ( 1000 * time_remaining ));
+ update_clock();
+ ct_counter = setInterval(update_clock, 1000);
+ }
+ }
+ });
+}
+
+function update_clock()
+{
+ var str = secs_to_string(current_track_pos) + '/' + secs_to_string(current_track_length);
+ $('playmeter').object.innerHTML = str;
+ current_track_pos++;
+}
+
+function secs_to_string(time)
+{
+ var count_seconds = time % 60;
+ var count_minutes = ( time - count_seconds ) / 60;
+ return fill_zeroes(count_minutes) + ':' + fill_zeroes(count_seconds);
+}
+
+function fill_zeroes(str, len)
+{
+ if ( !len )
+ len = 2;
+ if ( typeof(str) == 'number' && str == 0 )
+ str = '0';
+ str = String(str);
+ while ( str.length < len )
+ {
+ str = '0' + str;
+ }
+ return str;
+}
+
+window.onload = refresh_playlist;
+setInterval(refresh_playlist, 10000);
+