[76] | 1 | /*! |
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| 2 | * Ext JS Library 3.4.0 |
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| 3 | * Copyright(c) 2006-2011 Sencha Inc. |
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| 4 | * licensing@sencha.com |
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| 5 | * http://www.sencha.com/license |
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| 6 | */ |
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| 7 | /** |
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| 8 | * @class Ext.DomHelper |
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| 9 | * <p>The DomHelper class provides a layer of abstraction from DOM and transparently supports creating |
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| 10 | * elements via DOM or using HTML fragments. It also has the ability to create HTML fragment templates |
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| 11 | * from your DOM building code.</p> |
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| 12 | * |
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| 13 | * <p><b><u>DomHelper element specification object</u></b></p> |
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| 14 | * <p>A specification object is used when creating elements. Attributes of this object |
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| 15 | * are assumed to be element attributes, except for 4 special attributes: |
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| 16 | * <div class="mdetail-params"><ul> |
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| 17 | * <li><b><tt>tag</tt></b> : <div class="sub-desc">The tag name of the element</div></li> |
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| 18 | * <li><b><tt>children</tt></b> : or <tt>cn</tt><div class="sub-desc">An array of the |
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| 19 | * same kind of element definition objects to be created and appended. These can be nested |
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| 20 | * as deep as you want.</div></li> |
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| 21 | * <li><b><tt>cls</tt></b> : <div class="sub-desc">The class attribute of the element. |
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| 22 | * This will end up being either the "class" attribute on a HTML fragment or className |
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| 23 | * for a DOM node, depending on whether DomHelper is using fragments or DOM.</div></li> |
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| 24 | * <li><b><tt>html</tt></b> : <div class="sub-desc">The innerHTML for the element</div></li> |
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| 25 | * </ul></div></p> |
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| 26 | * |
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| 27 | * <p><b><u>Insertion methods</u></b></p> |
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| 28 | * <p>Commonly used insertion methods: |
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| 29 | * <div class="mdetail-params"><ul> |
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| 30 | * <li><b><tt>{@link #append}</tt></b> : <div class="sub-desc"></div></li> |
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| 31 | * <li><b><tt>{@link #insertBefore}</tt></b> : <div class="sub-desc"></div></li> |
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| 32 | * <li><b><tt>{@link #insertAfter}</tt></b> : <div class="sub-desc"></div></li> |
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| 33 | * <li><b><tt>{@link #overwrite}</tt></b> : <div class="sub-desc"></div></li> |
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| 34 | * <li><b><tt>{@link #createTemplate}</tt></b> : <div class="sub-desc"></div></li> |
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| 35 | * <li><b><tt>{@link #insertHtml}</tt></b> : <div class="sub-desc"></div></li> |
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| 36 | * </ul></div></p> |
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| 37 | * |
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| 38 | * <p><b><u>Example</u></b></p> |
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| 39 | * <p>This is an example, where an unordered list with 3 children items is appended to an existing |
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| 40 | * element with id <tt>'my-div'</tt>:<br> |
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| 41 | <pre><code> |
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| 42 | var dh = Ext.DomHelper; // create shorthand alias |
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| 43 | // specification object |
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| 44 | var spec = { |
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| 45 | id: 'my-ul', |
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| 46 | tag: 'ul', |
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| 47 | cls: 'my-list', |
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| 48 | // append children after creating |
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| 49 | children: [ // may also specify 'cn' instead of 'children' |
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| 50 | {tag: 'li', id: 'item0', html: 'List Item 0'}, |
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| 51 | {tag: 'li', id: 'item1', html: 'List Item 1'}, |
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| 52 | {tag: 'li', id: 'item2', html: 'List Item 2'} |
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| 53 | ] |
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| 54 | }; |
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| 55 | var list = dh.append( |
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| 56 | 'my-div', // the context element 'my-div' can either be the id or the actual node |
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| 57 | spec // the specification object |
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| 58 | ); |
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| 59 | </code></pre></p> |
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| 60 | * <p>Element creation specification parameters in this class may also be passed as an Array of |
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| 61 | * specification objects. This can be used to insert multiple sibling nodes into an existing |
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| 62 | * container very efficiently. For example, to add more list items to the example above:<pre><code> |
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| 63 | dh.append('my-ul', [ |
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| 64 | {tag: 'li', id: 'item3', html: 'List Item 3'}, |
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| 65 | {tag: 'li', id: 'item4', html: 'List Item 4'} |
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| 66 | ]); |
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| 67 | * </code></pre></p> |
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| 68 | * |
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| 69 | * <p><b><u>Templating</u></b></p> |
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| 70 | * <p>The real power is in the built-in templating. Instead of creating or appending any elements, |
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| 71 | * <tt>{@link #createTemplate}</tt> returns a Template object which can be used over and over to |
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| 72 | * insert new elements. Revisiting the example above, we could utilize templating this time: |
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| 73 | * <pre><code> |
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| 74 | // create the node |
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| 75 | var list = dh.append('my-div', {tag: 'ul', cls: 'my-list'}); |
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| 76 | // get template |
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| 77 | var tpl = dh.createTemplate({tag: 'li', id: 'item{0}', html: 'List Item {0}'}); |
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| 78 | |
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| 79 | for(var i = 0; i < 5, i++){ |
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| 80 | tpl.append(list, [i]); // use template to append to the actual node |
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| 81 | } |
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| 82 | * </code></pre></p> |
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| 83 | * <p>An example using a template:<pre><code> |
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| 84 | var html = '<a id="{0}" href="{1}" class="nav">{2}</a>'; |
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| 85 | |
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| 86 | var tpl = new Ext.DomHelper.createTemplate(html); |
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| 87 | tpl.append('blog-roll', ['link1', 'http://www.jackslocum.com/', "Jack's Site"]); |
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| 88 | tpl.append('blog-roll', ['link2', 'http://www.dustindiaz.com/', "Dustin's Site"]); |
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| 89 | * </code></pre></p> |
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| 90 | * |
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| 91 | * <p>The same example using named parameters:<pre><code> |
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| 92 | var html = '<a id="{id}" href="{url}" class="nav">{text}</a>'; |
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| 93 | |
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| 94 | var tpl = new Ext.DomHelper.createTemplate(html); |
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| 95 | tpl.append('blog-roll', { |
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| 96 | id: 'link1', |
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| 97 | url: 'http://www.jackslocum.com/', |
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| 98 | text: "Jack's Site" |
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| 99 | }); |
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| 100 | tpl.append('blog-roll', { |
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| 101 | id: 'link2', |
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| 102 | url: 'http://www.dustindiaz.com/', |
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| 103 | text: "Dustin's Site" |
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| 104 | }); |
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| 105 | * </code></pre></p> |
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| 106 | * |
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| 107 | * <p><b><u>Compiling Templates</u></b></p> |
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| 108 | * <p>Templates are applied using regular expressions. The performance is great, but if |
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| 109 | * you are adding a bunch of DOM elements using the same template, you can increase |
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| 110 | * performance even further by {@link Ext.Template#compile "compiling"} the template. |
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| 111 | * The way "{@link Ext.Template#compile compile()}" works is the template is parsed and |
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| 112 | * broken up at the different variable points and a dynamic function is created and eval'ed. |
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| 113 | * The generated function performs string concatenation of these parts and the passed |
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| 114 | * variables instead of using regular expressions. |
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| 115 | * <pre><code> |
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| 116 | var html = '<a id="{id}" href="{url}" class="nav">{text}</a>'; |
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| 117 | |
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| 118 | var tpl = new Ext.DomHelper.createTemplate(html); |
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| 119 | tpl.compile(); |
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| 120 | |
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| 121 | //... use template like normal |
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| 122 | * </code></pre></p> |
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| 123 | * |
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| 124 | * <p><b><u>Performance Boost</u></b></p> |
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| 125 | * <p>DomHelper will transparently create HTML fragments when it can. Using HTML fragments instead |
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| 126 | * of DOM can significantly boost performance.</p> |
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| 127 | * <p>Element creation specification parameters may also be strings. If {@link #useDom} is <tt>false</tt>, |
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| 128 | * then the string is used as innerHTML. If {@link #useDom} is <tt>true</tt>, a string specification |
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| 129 | * results in the creation of a text node. Usage:</p> |
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| 130 | * <pre><code> |
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| 131 | Ext.DomHelper.useDom = true; // force it to use DOM; reduces performance |
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| 132 | * </code></pre> |
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| 133 | * @singleton |
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| 134 | */ |
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| 135 | Ext.DomHelper = function(){ |
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| 136 | var tempTableEl = null, |
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| 137 | emptyTags = /^(?:br|frame|hr|img|input|link|meta|range|spacer|wbr|area|param|col)$/i, |
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| 138 | tableRe = /^table|tbody|tr|td$/i, |
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| 139 | confRe = /tag|children|cn|html$/i, |
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| 140 | tableElRe = /td|tr|tbody/i, |
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| 141 | cssRe = /([a-z0-9-]+)\s*:\s*([^;\s]+(?:\s*[^;\s]+)*);?/gi, |
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| 142 | endRe = /end/i, |
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| 143 | pub, |
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| 144 | // kill repeat to save bytes |
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| 145 | afterbegin = 'afterbegin', |
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| 146 | afterend = 'afterend', |
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| 147 | beforebegin = 'beforebegin', |
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| 148 | beforeend = 'beforeend', |
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| 149 | ts = '<table>', |
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| 150 | te = '</table>', |
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| 151 | tbs = ts+'<tbody>', |
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| 152 | tbe = '</tbody>'+te, |
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| 153 | trs = tbs + '<tr>', |
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| 154 | tre = '</tr>'+tbe; |
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| 155 | |
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| 156 | // private |
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| 157 | function doInsert(el, o, returnElement, pos, sibling, append){ |
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| 158 | var newNode = pub.insertHtml(pos, Ext.getDom(el), createHtml(o)); |
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| 159 | return returnElement ? Ext.get(newNode, true) : newNode; |
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| 160 | } |
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| 161 | |
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| 162 | // build as innerHTML where available |
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| 163 | function createHtml(o){ |
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| 164 | var b = '', |
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| 165 | attr, |
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| 166 | val, |
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| 167 | key, |
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| 168 | cn; |
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| 169 | |
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| 170 | if(typeof o == "string"){ |
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| 171 | b = o; |
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| 172 | } else if (Ext.isArray(o)) { |
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| 173 | for (var i=0; i < o.length; i++) { |
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| 174 | if(o[i]) { |
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| 175 | b += createHtml(o[i]); |
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| 176 | } |
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| 177 | }; |
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| 178 | } else { |
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| 179 | b += '<' + (o.tag = o.tag || 'div'); |
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| 180 | for (attr in o) { |
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| 181 | val = o[attr]; |
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| 182 | if(!confRe.test(attr)){ |
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| 183 | if (typeof val == "object") { |
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| 184 | b += ' ' + attr + '="'; |
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| 185 | for (key in val) { |
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| 186 | b += key + ':' + val[key] + ';'; |
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| 187 | }; |
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| 188 | b += '"'; |
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| 189 | }else{ |
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| 190 | b += ' ' + ({cls : 'class', htmlFor : 'for'}[attr] || attr) + '="' + val + '"'; |
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| 191 | } |
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| 192 | } |
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| 193 | }; |
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| 194 | // Now either just close the tag or try to add children and close the tag. |
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| 195 | if (emptyTags.test(o.tag)) { |
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| 196 | b += '/>'; |
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| 197 | } else { |
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| 198 | b += '>'; |
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| 199 | if ((cn = o.children || o.cn)) { |
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| 200 | b += createHtml(cn); |
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| 201 | } else if(o.html){ |
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| 202 | b += o.html; |
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| 203 | } |
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| 204 | b += '</' + o.tag + '>'; |
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| 205 | } |
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| 206 | } |
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| 207 | return b; |
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| 208 | } |
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| 209 | |
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| 210 | function ieTable(depth, s, h, e){ |
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| 211 | tempTableEl.innerHTML = [s, h, e].join(''); |
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| 212 | var i = -1, |
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| 213 | el = tempTableEl, |
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| 214 | ns; |
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| 215 | while(++i < depth){ |
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| 216 | el = el.firstChild; |
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| 217 | } |
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| 218 | // If the result is multiple siblings, then encapsulate them into one fragment. |
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| 219 | if(ns = el.nextSibling){ |
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| 220 | var df = document.createDocumentFragment(); |
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| 221 | while(el){ |
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| 222 | ns = el.nextSibling; |
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| 223 | df.appendChild(el); |
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| 224 | el = ns; |
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| 225 | } |
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| 226 | el = df; |
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| 227 | } |
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| 228 | return el; |
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| 229 | } |
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| 230 | |
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| 231 | /** |
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| 232 | * @ignore |
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| 233 | * Nasty code for IE's broken table implementation |
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| 234 | */ |
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| 235 | function insertIntoTable(tag, where, el, html) { |
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| 236 | var node, |
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| 237 | before; |
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| 238 | |
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| 239 | tempTableEl = tempTableEl || document.createElement('div'); |
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| 240 | |
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| 241 | if(tag == 'td' && (where == afterbegin || where == beforeend) || |
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| 242 | !tableElRe.test(tag) && (where == beforebegin || where == afterend)) { |
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| 243 | return; |
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| 244 | } |
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| 245 | before = where == beforebegin ? el : |
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| 246 | where == afterend ? el.nextSibling : |
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| 247 | where == afterbegin ? el.firstChild : null; |
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| 248 | |
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| 249 | if (where == beforebegin || where == afterend) { |
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| 250 | el = el.parentNode; |
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| 251 | } |
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| 252 | |
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| 253 | if (tag == 'td' || (tag == 'tr' && (where == beforeend || where == afterbegin))) { |
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| 254 | node = ieTable(4, trs, html, tre); |
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| 255 | } else if ((tag == 'tbody' && (where == beforeend || where == afterbegin)) || |
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| 256 | (tag == 'tr' && (where == beforebegin || where == afterend))) { |
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| 257 | node = ieTable(3, tbs, html, tbe); |
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| 258 | } else { |
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| 259 | node = ieTable(2, ts, html, te); |
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| 260 | } |
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| 261 | el.insertBefore(node, before); |
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| 262 | return node; |
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| 263 | } |
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| 264 | |
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| 265 | /** |
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| 266 | * @ignore |
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| 267 | * Fix for IE9 createContextualFragment missing method |
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| 268 | */ |
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| 269 | function createContextualFragment(html){ |
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| 270 | var div = document.createElement("div"), |
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| 271 | fragment = document.createDocumentFragment(), |
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| 272 | i = 0, |
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| 273 | length, childNodes; |
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| 274 | |
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| 275 | div.innerHTML = html; |
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| 276 | childNodes = div.childNodes; |
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| 277 | length = childNodes.length; |
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| 278 | |
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| 279 | for (; i < length; i++) { |
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| 280 | fragment.appendChild(childNodes[i].cloneNode(true)); |
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| 281 | } |
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| 282 | |
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| 283 | return fragment; |
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| 284 | } |
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| 285 | |
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| 286 | pub = { |
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| 287 | /** |
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| 288 | * Returns the markup for the passed Element(s) config. |
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| 289 | * @param {Object} o The DOM object spec (and children) |
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| 290 | * @return {String} |
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| 291 | */ |
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| 292 | markup : function(o){ |
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| 293 | return createHtml(o); |
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| 294 | }, |
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| 295 | |
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| 296 | /** |
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| 297 | * Applies a style specification to an element. |
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| 298 | * @param {String/HTMLElement} el The element to apply styles to |
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| 299 | * @param {String/Object/Function} styles A style specification string e.g. 'width:100px', or object in the form {width:'100px'}, or |
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| 300 | * a function which returns such a specification. |
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| 301 | */ |
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| 302 | applyStyles : function(el, styles){ |
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| 303 | if (styles) { |
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| 304 | var matches; |
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| 305 | |
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| 306 | el = Ext.fly(el); |
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| 307 | if (typeof styles == "function") { |
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| 308 | styles = styles.call(); |
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| 309 | } |
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| 310 | if (typeof styles == "string") { |
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| 311 | /** |
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| 312 | * Since we're using the g flag on the regex, we need to set the lastIndex. |
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| 313 | * This automatically happens on some implementations, but not others, see: |
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| 314 | * http://stackoverflow.com/questions/2645273/javascript-regular-expression-literal-persists-between-function-calls |
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| 315 | * http://blog.stevenlevithan.com/archives/fixing-javascript-regexp |
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| 316 | */ |
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| 317 | cssRe.lastIndex = 0; |
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| 318 | while ((matches = cssRe.exec(styles))) { |
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| 319 | el.setStyle(matches[1], matches[2]); |
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| 320 | } |
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| 321 | } else if (typeof styles == "object") { |
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| 322 | el.setStyle(styles); |
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| 323 | } |
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| 324 | } |
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| 325 | }, |
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| 326 | /** |
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| 327 | * Inserts an HTML fragment into the DOM. |
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| 328 | * @param {String} where Where to insert the html in relation to el - beforeBegin, afterBegin, beforeEnd, afterEnd. |
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| 329 | * @param {HTMLElement} el The context element |
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| 330 | * @param {String} html The HTML fragment |
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| 331 | * @return {HTMLElement} The new node |
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| 332 | */ |
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| 333 | insertHtml : function(where, el, html){ |
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| 334 | var hash = {}, |
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| 335 | hashVal, |
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| 336 | range, |
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| 337 | rangeEl, |
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| 338 | setStart, |
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| 339 | frag, |
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| 340 | rs; |
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| 341 | |
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| 342 | where = where.toLowerCase(); |
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| 343 | // add these here because they are used in both branches of the condition. |
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| 344 | hash[beforebegin] = ['BeforeBegin', 'previousSibling']; |
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| 345 | hash[afterend] = ['AfterEnd', 'nextSibling']; |
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| 346 | |
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| 347 | if (el.insertAdjacentHTML) { |
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| 348 | if(tableRe.test(el.tagName) && (rs = insertIntoTable(el.tagName.toLowerCase(), where, el, html))){ |
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| 349 | return rs; |
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| 350 | } |
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| 351 | // add these two to the hash. |
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| 352 | hash[afterbegin] = ['AfterBegin', 'firstChild']; |
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| 353 | hash[beforeend] = ['BeforeEnd', 'lastChild']; |
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| 354 | if ((hashVal = hash[where])) { |
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| 355 | el.insertAdjacentHTML(hashVal[0], html); |
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| 356 | return el[hashVal[1]]; |
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| 357 | } |
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| 358 | } else { |
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| 359 | range = el.ownerDocument.createRange(); |
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| 360 | setStart = 'setStart' + (endRe.test(where) ? 'After' : 'Before'); |
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| 361 | if (hash[where]) { |
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| 362 | range[setStart](el); |
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| 363 | if (!range.createContextualFragment) { |
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| 364 | frag = createContextualFragment(html); |
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| 365 | } |
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| 366 | else { |
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| 367 | frag = range.createContextualFragment(html); |
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| 368 | } |
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| 369 | el.parentNode.insertBefore(frag, where == beforebegin ? el : el.nextSibling); |
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| 370 | return el[(where == beforebegin ? 'previous' : 'next') + 'Sibling']; |
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| 371 | } else { |
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| 372 | rangeEl = (where == afterbegin ? 'first' : 'last') + 'Child'; |
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| 373 | if (el.firstChild) { |
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| 374 | range[setStart](el[rangeEl]); |
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| 375 | if (!range.createContextualFragment) { |
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| 376 | frag = createContextualFragment(html); |
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| 377 | } |
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| 378 | else { |
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| 379 | frag = range.createContextualFragment(html); |
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| 380 | } |
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| 381 | if(where == afterbegin){ |
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| 382 | el.insertBefore(frag, el.firstChild); |
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| 383 | }else{ |
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| 384 | el.appendChild(frag); |
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| 385 | } |
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| 386 | } else { |
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| 387 | el.innerHTML = html; |
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| 388 | } |
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| 389 | return el[rangeEl]; |
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| 390 | } |
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| 391 | } |
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| 392 | throw 'Illegal insertion point -> "' + where + '"'; |
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| 393 | }, |
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| 394 | |
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| 395 | /** |
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| 396 | * Creates new DOM element(s) and inserts them before el. |
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| 397 | * @param {Mixed} el The context element |
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| 398 | * @param {Object/String} o The DOM object spec (and children) or raw HTML blob |
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| 399 | * @param {Boolean} returnElement (optional) true to return a Ext.Element |
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| 400 | * @return {HTMLElement/Ext.Element} The new node |
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| 401 | */ |
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| 402 | insertBefore : function(el, o, returnElement){ |
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| 403 | return doInsert(el, o, returnElement, beforebegin); |
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| 404 | }, |
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| 405 | |
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| 406 | /** |
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| 407 | * Creates new DOM element(s) and inserts them after el. |
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| 408 | * @param {Mixed} el The context element |
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| 409 | * @param {Object} o The DOM object spec (and children) |
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| 410 | * @param {Boolean} returnElement (optional) true to return a Ext.Element |
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| 411 | * @return {HTMLElement/Ext.Element} The new node |
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| 412 | */ |
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| 413 | insertAfter : function(el, o, returnElement){ |
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| 414 | return doInsert(el, o, returnElement, afterend, 'nextSibling'); |
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| 415 | }, |
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| 416 | |
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| 417 | /** |
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| 418 | * Creates new DOM element(s) and inserts them as the first child of el. |
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| 419 | * @param {Mixed} el The context element |
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| 420 | * @param {Object/String} o The DOM object spec (and children) or raw HTML blob |
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| 421 | * @param {Boolean} returnElement (optional) true to return a Ext.Element |
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| 422 | * @return {HTMLElement/Ext.Element} The new node |
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| 423 | */ |
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| 424 | insertFirst : function(el, o, returnElement){ |
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| 425 | return doInsert(el, o, returnElement, afterbegin, 'firstChild'); |
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| 426 | }, |
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| 427 | |
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| 428 | /** |
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| 429 | * Creates new DOM element(s) and appends them to el. |
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| 430 | * @param {Mixed} el The context element |
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| 431 | * @param {Object/String} o The DOM object spec (and children) or raw HTML blob |
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| 432 | * @param {Boolean} returnElement (optional) true to return a Ext.Element |
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| 433 | * @return {HTMLElement/Ext.Element} The new node |
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| 434 | */ |
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| 435 | append : function(el, o, returnElement){ |
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| 436 | return doInsert(el, o, returnElement, beforeend, '', true); |
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| 437 | }, |
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| 438 | |
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| 439 | /** |
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| 440 | * Creates new DOM element(s) and overwrites the contents of el with them. |
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| 441 | * @param {Mixed} el The context element |
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| 442 | * @param {Object/String} o The DOM object spec (and children) or raw HTML blob |
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| 443 | * @param {Boolean} returnElement (optional) true to return a Ext.Element |
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| 444 | * @return {HTMLElement/Ext.Element} The new node |
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| 445 | */ |
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| 446 | overwrite : function(el, o, returnElement){ |
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| 447 | el = Ext.getDom(el); |
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| 448 | el.innerHTML = createHtml(o); |
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| 449 | return returnElement ? Ext.get(el.firstChild) : el.firstChild; |
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| 450 | }, |
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| 451 | |
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| 452 | createHtml : createHtml |
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| 453 | }; |
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| 454 | return pub; |
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| 455 | }(); |
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