django/media/js/core.js

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JavaScript
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// Core javascript helper functions
// Cross-browser event handlers.
function addEvent(obj, evType, fn) {
if (obj.addEventListener) {
obj.addEventListener(evType, fn, false);
return true;
} else if (obj.attachEvent) {
var r = obj.attachEvent("on" + evType, fn);
return r;
} else {
return false;
}
}
function removeEvent(obj, evType, fn) {
if (obj.removeEventListener) {
obj.removeEventListener(evType, fn, false);
return true;
} else if (obj.detachEvent) {
obj.detachEvent("on" + evType, fn);
} else {
return false;
}
}
// quickElement(tagType, parentReference, textInChildNode, [, attribute, attributeValue ...]);
function quickElement() {
var obj = document.createElement(arguments[0]);
if (arguments[2] != '' && arguments[2] != null) {
var textNode = document.createTextNode(arguments[2]);
obj.appendChild(textNode);
}
var len = arguments.length;
for (var i = 3; i < len; i += 2) {
obj.setAttribute(arguments[i], arguments[i+1]);
}
arguments[1].appendChild(obj);
return obj;
}
// ----------------------------------------------------------------------------
// Cross-browser xmlhttp object
// from http://jibbering.com/2002/4/httprequest.html
// ----------------------------------------------------------------------------
var xmlhttp;
/*@cc_on @*/
/*@if (@_jscript_version >= 5)
try {
xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try {
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
} catch (E) {
xmlhttp = false;
}
}
@else
xmlhttp = false;
@end @*/
if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
xmlhttp = new XMLHttpRequest();
}
// ----------------------------------------------------------------------------
// Find-position functions by PPK
// See http://www.xs4all.nl/~ppk/js/index.html?/~ppk/js/findpos.html
// ----------------------------------------------------------------------------
function findPosX(obj) {
var curleft = 0;
if (obj.offsetParent) {
while (obj.offsetParent) {
curleft += obj.offsetLeft
obj = obj.offsetParent;
}
} else if (obj.x) {
curleft += obj.x;
}
return curleft;
}
function findPosY(obj) {
var curtop = 0;
if (obj.offsetParent) {
while (obj.offsetParent) {
curtop += obj.offsetTop
obj = obj.offsetParent;
}
} else if (obj.y) {
curtop += obj.y;
}
return curtop;
}
//-----------------------------------------------------------------------------
// Date object extensions
// ----------------------------------------------------------------------------
Date.prototype.getCorrectYear = function() {
// Date.getYear() is unreliable --
// see http://www.quirksmode.org/js/introdate.html#year
var y = this.getYear() % 100;
return (y < 38) ? y + 2000 : y + 1900;
}
Date.prototype.getTwoDigitMonth = function() {
return (this.getMonth() < 9) ? '0' + (this.getMonth()+1) : (this.getMonth()+1);
}
Date.prototype.getTwoDigitDate = function() {
return (this.getDate() < 10) ? '0' + this.getDate() : this.getDate();
}
Date.prototype.getTwoDigitHour = function() {
return (this.getHours() < 10) ? '0' + this.getHours() : this.getHours();
}
Date.prototype.getTwoDigitMinute = function() {
return (this.getMinutes() < 10) ? '0' + this.getMinutes() : this.getMinutes();
}
Date.prototype.getISODate = function() {
return this.getCorrectYear() + '-' + this.getTwoDigitMonth() + '-' + this.getTwoDigitDate();
}
Date.prototype.getHourMinute = function() {
return this.getTwoDigitHour() + ':' + this.getTwoDigitMinute();
}
// ----------------------------------------------------------------------------
// String object extensions
// ----------------------------------------------------------------------------
String.prototype.pad_left = function(pad_length, pad_string) {
new_string = this;
for (var i = 0; new_string.length < pad_length; i++) {
new_string = pad_string + new_string;
}
return new_string;
}