/* jQuery hash change event
*
* Copyright (c) 2009 Sergey Berezhnoy <veged mail ru>
*/
(function($){
var $document = $(document),
iframe,
hash = '',
needHistoryAdd = /MSIE/.test(navigator.userAgent),
afterHistoryRead = false,
afterHistoryAdd = false;
function check() {
if (hash != (hash = document.location.hash)) {
if (!afterHistoryRead && needHistoryAdd) historyAdd(hash);
afterHistoryRead = false;
$document.trigger('hashChange', [hash]);
// console.log('hashChange: ' + hash);
}
setTimeout(check, 42);
}
function historyAdd(hash) {
if (!iframe) iframe = $(';').appendTo('body')[0];
var d = iframe.contentDocument ||
(iframe.contentWindow ? iframe.contentWindow.document : iframe.document);
d.open();
d.write('' + document.title + '');
d.write($(';').append($('').text(hash)).html());
d.write(
'<script>' +
'window._hash = document.getElementById("hashdiv").innerText;' +
'window.onload = parent._historyRead;' +
'</script>'
);
afterHistoryAdd = true;
d.write('');
d.close();
// console.log('historyAdd: ' + hash);
}
if ('onpropertychange' in document && 'attachEvent' in document) {
document.attachEvent('onpropertychange', function(){
if (event.propertyName == 'location') {
check();
// console.log('onpropertychange: ' + document.location.hash);
}
});
}
if (needHistoryAdd) {
window._historyRead = function(){
// console.log('try historyRead: ' + this._hash);
if (!afterHistoryAdd) {
var newHash = this._hash;
// console.log('newHash: ' + newHash + ', currentHash: ' + document.location.hash);
if (document.location.hash != newHash) {
afterHistoryRead = true;
document.location.hash = newHash;
// console.log('historyRead: ' + newHash);
}
}
afterHistoryAdd = false;
};
}
$(function(){ setTimeout(check, 1) });
})(jQuery);