2 * Ext JS Library 2.2.1
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3 * Copyright(c) 2006-2009, Ext JS, LLC.
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4 * licensing@extjs.com
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6 * http://extjs.com/license
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10 * @class Ext.DomHelper
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11 * Utility class for working with DOM and/or Templates. It transparently supports using HTML fragments or DOM.<br>
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12 * This is an example, where an unordered list with 5 children items is appended to an existing element with id 'my-div':<br>
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14 var dh = Ext.DomHelper;
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15 var list = dh.append('my-div', {
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16 id: 'my-ul', tag: 'ul', cls: 'my-list', children: [
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17 {tag: 'li', id: 'item0', html: 'List Item 0'},
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18 {tag: 'li', id: 'item1', html: 'List Item 1'},
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19 {tag: 'li', id: 'item2', html: 'List Item 2'},
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20 {tag: 'li', id: 'item3', html: 'List Item 3'},
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21 {tag: 'li', id: 'item4', html: 'List Item 4'}
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25 * <p>Element creation specification parameters in this class may also be passed as an Array of
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26 * specification objects. This can be used to insert multiple sibling nodes into an existing
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27 * container very efficiently. For example, to add more list items to the example above:<pre><code>
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28 dh.append('my-ul', [
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29 {tag: 'li', id: 'item5', html: 'List Item 5'},
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30 {tag: 'li', id: 'item6', html: 'List Item 6'} ]);
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32 * <p>Element creation specification parameters may also be strings. If {@link useDom} is false, then the string is used
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33 * as innerHTML. If {@link useDom} is true, a string specification results in the creation of a text node.</p>
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34 * For more information and examples, see <a href="http://www.jackslocum.com/blog/2006/10/06/domhelper-create-elements-using-dom-html-fragments-or-templates/">the original blog post</a>.
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37 Ext.DomHelper = function(){
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38 var tempTableEl = null;
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39 var emptyTags = /^(?:br|frame|hr|img|input|link|meta|range|spacer|wbr|area|param|col)$/i;
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40 var tableRe = /^table|tbody|tr|td$/i;
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42 // build as innerHTML where available
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43 var createHtml = function(o){
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44 if(typeof o == 'string'){
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48 if (Ext.isArray(o)) {
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49 for (var i = 0, l = o.length; i < l; i++) {
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50 b += createHtml(o[i]);
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59 if(attr == "tag" || attr == "children" || attr == "cn" || attr == "html" || typeof o[attr] == "function") continue;
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60 if(attr == "style"){
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62 if(typeof s == "function"){
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65 if(typeof s == "string"){
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66 b += ' style="' + s + '"';
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67 }else if(typeof s == "object"){
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70 if(typeof s[key] != "function"){
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71 b += key + ":" + s[key] + ";";
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78 b += ' class="' + o["cls"] + '"';
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79 }else if(attr == "htmlFor"){
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80 b += ' for="' + o["htmlFor"] + '"';
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82 b += " " + attr + '="' + o[attr] + '"';
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86 if(emptyTags.test(o.tag)){
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90 var cn = o.children || o.cn;
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92 b += createHtml(cn);
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96 b += "</" + o.tag + ">";
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103 var createDom = function(o, parentNode){
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105 if (Ext.isArray(o)) { // Allow Arrays of siblings to be inserted
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106 el = document.createDocumentFragment(); // in one shot using a DocumentFragment
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107 for(var i = 0, l = o.length; i < l; i++) {
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108 createDom(o[i], el);
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110 } else if (typeof o == "string") { // Allow a string as a child spec.
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111 el = document.createTextNode(o);
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113 el = document.createElement(o.tag||'div');
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114 var useSet = !!el.setAttribute; // In IE some elements don't have setAttribute
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115 for(var attr in o){
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116 if(attr == "tag" || attr == "children" || attr == "cn" || attr == "html" || attr == "style" || typeof o[attr] == "function") continue;
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118 el.className = o["cls"];
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120 if(useSet) el.setAttribute(attr, o[attr]);
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121 else el[attr] = o[attr];
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124 Ext.DomHelper.applyStyles(el, o.style);
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125 var cn = o.children || o.cn;
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129 el.innerHTML = o.html;
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133 parentNode.appendChild(el);
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138 var ieTable = function(depth, s, h, e){
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139 tempTableEl.innerHTML = [s, h, e].join('');
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140 var i = -1, el = tempTableEl;
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141 while(++i < depth){
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142 el = el.firstChild;
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147 // kill repeat to save bytes
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148 var ts = '<table>',
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150 tbs = ts+'<tbody>',
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151 tbe = '</tbody>'+te,
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152 trs = tbs + '<tr>',
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157 * Nasty code for IE's broken table implementation
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159 var insertIntoTable = function(tag, where, el, html){
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161 tempTableEl = document.createElement('div');
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166 if(where == 'afterbegin' || where == 'beforeend'){ // INTO a TD
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169 if(where == 'beforebegin'){
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171 el = el.parentNode;
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173 before = el.nextSibling;
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174 el = el.parentNode;
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176 node = ieTable(4, trs, html, tre);
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178 else if(tag == 'tr'){
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179 if(where == 'beforebegin'){
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181 el = el.parentNode;
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182 node = ieTable(3, tbs, html, tbe);
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183 } else if(where == 'afterend'){
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184 before = el.nextSibling;
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185 el = el.parentNode;
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186 node = ieTable(3, tbs, html, tbe);
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187 } else{ // INTO a TR
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188 if(where == 'afterbegin'){
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189 before = el.firstChild;
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191 node = ieTable(4, trs, html, tre);
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193 } else if(tag == 'tbody'){
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194 if(where == 'beforebegin'){
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196 el = el.parentNode;
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197 node = ieTable(2, ts, html, te);
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198 } else if(where == 'afterend'){
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199 before = el.nextSibling;
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200 el = el.parentNode;
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201 node = ieTable(2, ts, html, te);
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203 if(where == 'afterbegin'){
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204 before = el.firstChild;
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206 node = ieTable(3, tbs, html, tbe);
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209 if(where == 'beforebegin' || where == 'afterend'){ // OUTSIDE the table
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212 if(where == 'afterbegin'){
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213 before = el.firstChild;
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215 node = ieTable(2, ts, html, te);
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217 el.insertBefore(node, before);
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223 /** True to force the use of DOM instead of html fragments @type Boolean */
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227 * Returns the markup for the passed Element(s) config.
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228 * @param {Object} o The DOM object spec (and children)
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231 markup : function(o){
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232 return createHtml(o);
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236 * Applies a style specification to an element.
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237 * @param {String/HTMLElement} el The element to apply styles to
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238 * @param {String/Object/Function} styles A style specification string eg "width:100px", or object in the form {width:"100px"}, or
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239 * a function which returns such a specification.
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241 applyStyles : function(el, styles){
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244 if(typeof styles == "string"){
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245 var re = /\s?([a-z\-]*)\:\s?([^;]*);?/gi;
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247 while ((matches = re.exec(styles)) != null){
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248 el.setStyle(matches[1], matches[2]);
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250 }else if (typeof styles == "object"){
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251 for (var style in styles){
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252 el.setStyle(style, styles[style]);
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254 }else if (typeof styles == "function"){
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255 Ext.DomHelper.applyStyles(el, styles.call());
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261 * Inserts an HTML fragment into the DOM.
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262 * @param {String} where Where to insert the html in relation to el - beforeBegin, afterBegin, beforeEnd, afterEnd.
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263 * @param {HTMLElement} el The context element
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264 * @param {String} html The HTML fragmenet
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265 * @return {HTMLElement} The new node
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267 insertHtml : function(where, el, html){
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268 where = where.toLowerCase();
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269 if(el.insertAdjacentHTML){
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270 if(tableRe.test(el.tagName)){
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272 if(rs = insertIntoTable(el.tagName.toLowerCase(), where, el, html)){
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277 case "beforebegin":
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278 el.insertAdjacentHTML('BeforeBegin', html);
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279 return el.previousSibling;
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281 el.insertAdjacentHTML('AfterBegin', html);
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282 return el.firstChild;
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284 el.insertAdjacentHTML('BeforeEnd', html);
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285 return el.lastChild;
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287 el.insertAdjacentHTML('AfterEnd', html);
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288 return el.nextSibling;
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290 throw 'Illegal insertion point -> "' + where + '"';
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292 var range = el.ownerDocument.createRange();
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295 case "beforebegin":
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296 range.setStartBefore(el);
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297 frag = range.createContextualFragment(html);
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298 el.parentNode.insertBefore(frag, el);
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299 return el.previousSibling;
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302 range.setStartBefore(el.firstChild);
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303 frag = range.createContextualFragment(html);
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304 el.insertBefore(frag, el.firstChild);
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305 return el.firstChild;
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307 el.innerHTML = html;
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308 return el.firstChild;
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312 range.setStartAfter(el.lastChild);
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313 frag = range.createContextualFragment(html);
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314 el.appendChild(frag);
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315 return el.lastChild;
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317 el.innerHTML = html;
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318 return el.lastChild;
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321 range.setStartAfter(el);
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322 frag = range.createContextualFragment(html);
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323 el.parentNode.insertBefore(frag, el.nextSibling);
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324 return el.nextSibling;
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326 throw 'Illegal insertion point -> "' + where + '"';
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330 * Creates new DOM element(s) and inserts them before el.
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331 * @param {Mixed} el The context element
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332 * @param {Object/String} o The DOM object spec (and children) or raw HTML blob
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333 * @param {Boolean} returnElement (optional) true to return a Ext.Element
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334 * @return {HTMLElement/Ext.Element} The new node
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336 insertBefore : function(el, o, returnElement){
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337 return this.doInsert(el, o, returnElement, "beforeBegin");
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341 * Creates new DOM element(s) and inserts them after el.
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342 * @param {Mixed} el The context element
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343 * @param {Object} o The DOM object spec (and children)
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344 * @param {Boolean} returnElement (optional) true to return a Ext.Element
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345 * @return {HTMLElement/Ext.Element} The new node
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347 insertAfter : function(el, o, returnElement){
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348 return this.doInsert(el, o, returnElement, "afterEnd", "nextSibling");
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352 * Creates new DOM element(s) and inserts them as the first child of el.
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353 * @param {Mixed} el The context element
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354 * @param {Object/String} o The DOM object spec (and children) or raw HTML blob
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355 * @param {Boolean} returnElement (optional) true to return a Ext.Element
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356 * @return {HTMLElement/Ext.Element} The new node
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358 insertFirst : function(el, o, returnElement){
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359 return this.doInsert(el, o, returnElement, "afterBegin", "firstChild");
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363 doInsert : function(el, o, returnElement, pos, sibling){
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364 el = Ext.getDom(el);
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367 newNode = createDom(o, null);
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368 (sibling === "firstChild" ? el : el.parentNode).insertBefore(newNode, sibling ? el[sibling] : el);
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370 var html = createHtml(o);
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371 newNode = this.insertHtml(pos, el, html);
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373 return returnElement ? Ext.get(newNode, true) : newNode;
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377 * Creates new DOM element(s) and appends them to el.
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378 * @param {Mixed} el The context element
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379 * @param {Object/String} o The DOM object spec (and children) or raw HTML blob
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380 * @param {Boolean} returnElement (optional) true to return a Ext.Element
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381 * @return {HTMLElement/Ext.Element} The new node
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383 append : function(el, o, returnElement){
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384 el = Ext.getDom(el);
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387 newNode = createDom(o, null);
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388 el.appendChild(newNode);
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390 var html = createHtml(o);
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391 newNode = this.insertHtml("beforeEnd", el, html);
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393 return returnElement ? Ext.get(newNode, true) : newNode;
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397 * Creates new DOM element(s) and overwrites the contents of el with them.
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398 * @param {Mixed} el The context element
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399 * @param {Object/String} o The DOM object spec (and children) or raw HTML blob
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400 * @param {Boolean} returnElement (optional) true to return a Ext.Element
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401 * @return {HTMLElement/Ext.Element} The new node
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403 overwrite : function(el, o, returnElement){
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404 el = Ext.getDom(el);
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405 el.innerHTML = createHtml(o);
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406 return returnElement ? Ext.get(el.firstChild, true) : el.firstChild;
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410 * Creates a new Ext.Template from the DOM object spec.
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411 * @param {Object} o The DOM object spec (and children)
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412 * @return {Ext.Template} The new template
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414 createTemplate : function(o){
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415 var html = createHtml(o);
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416 return new Ext.Template(html);
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