/django/contrib/admin/media/js/core.js

  1// Core javascript helper functions
  2
  3// basic browser identification & version
  4var isOpera = (navigator.userAgent.indexOf("Opera")>=0) && parseFloat(navigator.appVersion);
  5var isIE = ((document.all) && (!isOpera)) && parseFloat(navigator.appVersion.split("MSIE ")[1].split(";")[0]);
  6
  7// Cross-browser event handlers.
  8function addEvent(obj, evType, fn) {
  9    if (obj.addEventListener) {
 10        obj.addEventListener(evType, fn, false);
 11        return true;
 12    } else if (obj.attachEvent) {
 13        var r = obj.attachEvent("on" + evType, fn);
 14        return r;
 15    } else {
 16        return false;
 17    }
 18}
 19
 20function removeEvent(obj, evType, fn) {
 21    if (obj.removeEventListener) {
 22        obj.removeEventListener(evType, fn, false);
 23        return true;
 24    } else if (obj.detachEvent) {
 25        obj.detachEvent("on" + evType, fn);
 26        return true;
 27    } else {
 28        return false;
 29    }
 30}
 31
 32// quickElement(tagType, parentReference, textInChildNode, [, attribute, attributeValue ...]);
 33function quickElement() {
 34    var obj = document.createElement(arguments[0]);
 35    if (arguments[2] != '' && arguments[2] != null) {
 36        var textNode = document.createTextNode(arguments[2]);
 37        obj.appendChild(textNode);
 38    }
 39    var len = arguments.length;
 40    for (var i = 3; i < len; i += 2) {
 41        obj.setAttribute(arguments[i], arguments[i+1]);
 42    }
 43    arguments[1].appendChild(obj);
 44    return obj;
 45}
 46
 47// ----------------------------------------------------------------------------
 48// Cross-browser xmlhttp object
 49// from http://jibbering.com/2002/4/httprequest.html
 50// ----------------------------------------------------------------------------
 51var xmlhttp;
 52/*@cc_on @*/
 53/*@if (@_jscript_version >= 5)
 54    try {
 55        xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
 56    } catch (e) {
 57        try {
 58            xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
 59        } catch (E) {
 60            xmlhttp = false;
 61        }
 62    }
 63@else
 64    xmlhttp = false;
 65@end @*/
 66if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
 67  xmlhttp = new XMLHttpRequest();
 68}
 69
 70// ----------------------------------------------------------------------------
 71// Find-position functions by PPK
 72// See http://www.quirksmode.org/js/findpos.html
 73// ----------------------------------------------------------------------------
 74function findPosX(obj) {
 75    var curleft = 0;
 76    if (obj.offsetParent) {
 77        while (obj.offsetParent) {
 78            curleft += obj.offsetLeft - ((isOpera) ? 0 : obj.scrollLeft);
 79            obj = obj.offsetParent;
 80        }
 81        // IE offsetParent does not include the top-level
 82        if (isIE && obj.parentElement){
 83            curleft += obj.offsetLeft - obj.scrollLeft;
 84        }
 85    } else if (obj.x) {
 86        curleft += obj.x;
 87    }
 88    return curleft;
 89}
 90
 91function findPosY(obj) {
 92    var curtop = 0;
 93    if (obj.offsetParent) {
 94        while (obj.offsetParent) {
 95            curtop += obj.offsetTop - ((isOpera) ? 0 : obj.scrollTop);
 96            obj = obj.offsetParent;
 97        }
 98        // IE offsetParent does not include the top-level
 99        if (isIE && obj.parentElement){
100            curtop += obj.offsetTop - obj.scrollTop;
101        }
102    } else if (obj.y) {
103        curtop += obj.y;
104    }
105    return curtop;
106}
107
108//-----------------------------------------------------------------------------
109// Date object extensions
110// ----------------------------------------------------------------------------
111Date.prototype.getCorrectYear = function() {
112    // Date.getYear() is unreliable --
113    // see http://www.quirksmode.org/js/introdate.html#year
114    var y = this.getYear() % 100;
115    return (y < 38) ? y + 2000 : y + 1900;
116}
117
118Date.prototype.getTwelveHours = function() {
119    hours = this.getHours();
120    if (hours == 0) {
121        return 12;
122    }
123    else {
124        return hours <= 12 ? hours : hours-12
125    }
126}
127
128Date.prototype.getTwoDigitMonth = function() {
129    return (this.getMonth() < 9) ? '0' + (this.getMonth()+1) : (this.getMonth()+1);
130}
131
132Date.prototype.getTwoDigitDate = function() {
133    return (this.getDate() < 10) ? '0' + this.getDate() : this.getDate();
134}
135
136Date.prototype.getTwoDigitTwelveHour = function() {
137    return (this.getTwelveHours() < 10) ? '0' + this.getTwelveHours() : this.getTwelveHours();
138}
139
140Date.prototype.getTwoDigitHour = function() {
141    return (this.getHours() < 10) ? '0' + this.getHours() : this.getHours();
142}
143
144Date.prototype.getTwoDigitMinute = function() {
145    return (this.getMinutes() < 10) ? '0' + this.getMinutes() : this.getMinutes();
146}
147
148Date.prototype.getTwoDigitSecond = function() {
149    return (this.getSeconds() < 10) ? '0' + this.getSeconds() : this.getSeconds();
150}
151
152Date.prototype.getISODate = function() {
153    return this.getCorrectYear() + '-' + this.getTwoDigitMonth() + '-' + this.getTwoDigitDate();
154}
155
156Date.prototype.getHourMinute = function() {
157    return this.getTwoDigitHour() + ':' + this.getTwoDigitMinute();
158}
159
160Date.prototype.getHourMinuteSecond = function() {
161    return this.getTwoDigitHour() + ':' + this.getTwoDigitMinute() + ':' + this.getTwoDigitSecond();
162}
163
164Date.prototype.strftime = function(format) {
165    var fields = {
166        c: this.toString(),
167        d: this.getTwoDigitDate(),
168        H: this.getTwoDigitHour(),
169        I: this.getTwoDigitTwelveHour(),
170        m: this.getTwoDigitMonth(),
171        M: this.getTwoDigitMinute(),
172        p: (this.getHours() >= 12) ? 'PM' : 'AM',
173        S: this.getTwoDigitSecond(),
174        w: '0' + this.getDay(),
175        x: this.toLocaleDateString(),
176        X: this.toLocaleTimeString(),
177        y: ('' + this.getFullYear()).substr(2, 4),
178        Y: '' + this.getFullYear(),
179        '%' : '%'
180    };
181    var result = '', i = 0;
182    while (i < format.length) {
183        if (format.charAt(i) === '%') {
184            result = result + fields[format.charAt(i + 1)];
185            ++i;
186        }
187        else {
188            result = result + format.charAt(i);
189        }
190        ++i;
191    }
192    return result;
193}
194
195// ----------------------------------------------------------------------------
196// String object extensions
197// ----------------------------------------------------------------------------
198String.prototype.pad_left = function(pad_length, pad_string) {
199    var new_string = this;
200    for (var i = 0; new_string.length < pad_length; i++) {
201        new_string = pad_string + new_string;
202    }
203    return new_string;
204}
205
206// ----------------------------------------------------------------------------
207// Get the computed style for and element
208// ----------------------------------------------------------------------------
209function getStyle(oElm, strCssRule){
210    var strValue = "";
211    if(document.defaultView && document.defaultView.getComputedStyle){
212        strValue = document.defaultView.getComputedStyle(oElm, "").getPropertyValue(strCssRule);
213    }
214    else if(oElm.currentStyle){
215        strCssRule = strCssRule.replace(/\-(\w)/g, function (strMatch, p1){
216            return p1.toUpperCase();
217        });
218        strValue = oElm.currentStyle[strCssRule];
219    }
220    return strValue;
221}