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changeset 626:1a2fc3a93b3e

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don't poll on the ascoltami page if it's not the visible tab Ignore-this: 4c9cbccacecc6bd198fe38aa1abef7e6
author drewp@bigasterisk.com
date Wed, 15 Jun 2011 05:46:36 +0000
parents ad41fdc33a91
children f0f56076658d
files light9/ascoltami/index.html
diffstat 1 files changed, 13 insertions(+), 3 deletions(-) [+]
line wrap: on
line diff
--- a/light9/ascoltami/index.html	Wed Jun 15 05:32:23 2011 +0000
+++ b/light9/ascoltami/index.html	Wed Jun 15 05:46:36 2011 +0000
@@ -45,7 +45,7 @@
     var currentDuration = 0;
     var currentHighlightedSong = "";
     var lastPlaying;
-    function updateCurrent() {
+    function updateCurrent(doneCallback) {
 	$.getJSON("time", {}, function (data, status) {
 	    $("#currentSong").text(data.song);
 	    if (data.song != currentHighlightedSong) {
@@ -63,6 +63,7 @@
 		$(data.playing ? "#cmd-play" : "#cmd-stop").addClass("active");
 		lastPlaying = data.playing;
 	    }
+	    doneCallback();
 	});
     }
     function showCurrentSong(uri) {
@@ -131,11 +132,20 @@
 	},
     });
     
+    var raf = window.requestAnimationFrame ||
+	window.mozRequestAnimationFrame || 
+	window.webkitRequestAnimationFrame;
+
     function updateLoop() {
-	updateCurrent();
-	setTimeout(updateLoop, 200);
+	var whenDone = function () {
+	    setTimeout(function () { 
+		raf(updateLoop);
+	    }, 50);
+	};
+	updateCurrent(whenDone);
     }
     updateLoop();
+
 });
 // ]]>
 </script>