event-ready-base.js revision e927be37f3d793f6b3a73cb656f34daf191fda54
/**
* DOM event listener abstraction layer
* @module event
*/
(function() {
// Unlike most of the library, this code has to be executed as soon as it is
// introduced into the page -- and it should only be executed one time
// regardless of the number of instances that use it.
var GLOBAL_ENV = YUI.Env,
C = YUI.config,
D = C.doc,
POLL_INTERVAL = C.pollInterval || 20,
_ready = function(e) {
GLOBAL_ENV._ready();
};
if (!GLOBAL_ENV._ready) {
GLOBAL_ENV.windowLoaded = false;
GLOBAL_ENV._ready = function() {
if (!GLOBAL_ENV.DOMReady) {
GLOBAL_ENV.DOMReady=true;
// Remove the DOMContentLoaded (FF/Opera)
if (D.removeEventListener) {
D.removeEventListener("DOMContentLoaded", _ready, false);
}
}
};
// create custom event
/////////////////////////////////////////////////////////////
// DOMReady
// based on work by: Dean Edwards/John Resig/Matthias Miller
// Internet Explorer: use the readyState of a defered script.
// This isolates what appears to be a safe moment to manipulate
// the DOM prior to when the document's readyState suggests
// it is safe to do so.
if (navigator.userAgent.match(/MSIE/)) {
GLOBAL_ENV._dri = setInterval(function() {
try {
// throws an error if doc is not ready
document.documentElement.doScroll('left');
clearInterval(GLOBAL_ENV._dri);
GLOBAL_ENV._dri = null;
_ready();
} catch (ex) {
}
}, POLL_INTERVAL);
// FireFox and Opera: These browsers provide a event for this
// moment. The latest WebKit releases now support this event.
} else {
D.addEventListener("DOMContentLoaded", _ready, false);
}
/////////////////////////////////////////////////////////////
}
})();