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Clean up Event.requestAnimationFrame.

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This commit is contained in:
Jürg Lehni 2011-03-14 22:19:06 +01:00
parent 6d8379f885
commit 8179d7bf7e
1 changed files with 16 additions and 18 deletions
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34
src/util/Event.js
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@ -81,28 +81,26 @@ Event.requestAnimationFrame = new function() {
slowRate = 1000,
timer;
// Checks all installed callbacks for element visibility and execute if
// needed.
function checkCallbacks() {
if (!focused)
return;
for (var i = callbacks.length - 1; i >= 0; i--) {
var entry = callbacks[i],
func = entry[0],
element = entry[1];
if (!element || Element.isVisible(element)) {
// Handle callback and remove it from callbacks list.
callbacks.splice(i, 1);
func(+new Date);
}
}
}
// Installs interval timer that checks all callbacks. This results in much
// faster animations than repeatedly installing timout timers.
function setTimer(timeout) {
window.clearInterval(timer);
timer = window.setInterval(checkCallbacks, timeout);
timer = window.setInterval(function() {
// Checks all installed callbacks for element visibility and execute
// if needed.
if (!focused)
return;
for (var i = callbacks.length - 1; i >= 0; i--) {
var entry = callbacks[i],
func = entry[0],
element = entry[1];
if (!element || Element.isVisible(element)) {
// Handle callback and remove it from callbacks list.
callbacks.splice(i, 1);
func(+new Date);
}
}
}, timeout);
}
var focused = true;