/*!
* Ext JS Library 3.0.3
* Copyright(c) 2006-2009 Ext JS, LLC
* licensing@extjs.com
* http://www.extjs.com/license
*/
/**
* @class Ext.DomHelper
* <p>The DomHelper class provides a layer of abstraction from DOM and transparently supports creating
* elements via DOM or using HTML fragments. It also has the ability to create HTML fragment templates
* from your DOM building code.</p>
*
* <p><b><u>DomHelper element specification object</u></b></p>
* <p>A specification object is used when creating elements. Attributes of this object
* are assumed to be element attributes, except for 4 special attributes:
* <div class="mdetail-params"><ul>
* <li><b><tt>tag</tt></b> : <div class="sub-desc">The tag name of the element</div></li>
* <li><b><tt>children</tt></b> : or <tt>cn</tt><div class="sub-desc">An array of the
* same kind of element definition objects to be created and appended. These can be nested
* as deep as you want.</div></li>
* <li><b><tt>cls</tt></b> : <div class="sub-desc">The class attribute of the element.
* This will end up being either the "class" attribute on a HTML fragment or className
* for a DOM node, depending on whether DomHelper is using fragments or DOM.</div></li>
* <li><b><tt>html</tt></b> : <div class="sub-desc">The innerHTML for the element</div></li>
* </ul></div></p>
*
* <p><b><u>Insertion methods</u></b></p>
* <p>Commonly used insertion methods:
* <div class="mdetail-params"><ul>
* <li><b><tt>{@link #append}</tt></b> : <div class="sub-desc"></div></li>
* <li><b><tt>{@link #insertBefore}</tt></b> : <div class="sub-desc"></div></li>
* <li><b><tt>{@link #insertAfter}</tt></b> : <div class="sub-desc"></div></li>
* <li><b><tt>{@link #overwrite}</tt></b> : <div class="sub-desc"></div></li>
* <li><b><tt>{@link #createTemplate}</tt></b> : <div class="sub-desc"></div></li>
* <li><b><tt>{@link #insertHtml}</tt></b> : <div class="sub-desc"></div></li>
* </ul></div></p>
*
* <p><b><u>Example</u></b></p>
* <p>This is an example, where an unordered list with 3 children items is appended to an existing
* element with id <tt>'my-div'</tt>:<br>
<pre><code>
var dh = Ext.DomHelper; // create shorthand alias
// specification object
var spec = {
id: 'my-ul',
tag: 'ul',
cls: 'my-list',
// append children after creating
children: [ // may also specify 'cn' instead of 'children'
{tag: 'li', id: 'item0', html: 'List Item 0'},
{tag: 'li', id: 'item1', html: 'List Item 1'},
{tag: 'li', id: 'item2', html: 'List Item 2'}
]
};
var list = dh.append(
'my-div', // the context element 'my-div' can either be the id or the actual node
spec // the specification object
);
</code></pre></p>
* <p>Element creation specification parameters in this class may also be passed as an Array of
* specification objects. This can be used to insert multiple sibling nodes into an existing
* container very efficiently. For example, to add more list items to the example above:<pre><code>
dh.append('my-ul', [
{tag: 'li', id: 'item3', html: 'List Item 3'},
{tag: 'li', id: 'item4', html: 'List Item 4'}
]);
* </code></pre></p>
*
* <p><b><u>Templating</u></b></p>
* <p>The real power is in the built-in templating. Instead of creating or appending any elements,
* <tt>{@link #createTemplate}</tt> returns a Template object which can be used over and over to
* insert new elements. Revisiting the example above, we could utilize templating this time:
* <pre><code>
// create the node
var list = dh.append('my-div', {tag: 'ul', cls: 'my-list'});
// get template
var tpl = dh.createTemplate({tag: 'li', id: 'item{0}', html: 'List Item {0}'});
for(var i = 0; i < 5, i++){
tpl.append(list, [i]); // use template to append to the actual node
}
* </code></pre></p>
* <p>An example using a template:<pre><code>
var html = '<a id="{0}" href="{1}" class="nav">{2}</a>';
var tpl = new Ext.DomHelper.createTemplate(html);
tpl.append('blog-roll', ['link1', 'http://www.jackslocum.com/', "Jack's Site"]);
tpl.append('blog-roll', ['link2', 'http://www.dustindiaz.com/', "Dustin's Site"]);
* </code></pre></p>
*
* <p>The same example using named parameters:<pre><code>
var html = '<a id="{id}" href="{url}" class="nav">{text}</a>';
var tpl = new Ext.DomHelper.createTemplate(html);
tpl.append('blog-roll', {
id: 'link1',
url: 'http://www.jackslocum.com/',
text: "Jack's Site"
});
tpl.append('blog-roll', {
id: 'link2',
url: 'http://www.dustindiaz.com/',
text: "Dustin's Site"
});
* </code></pre></p>
*
* <p><b><u>Compiling Templates</u></b></p>
* <p>Templates are applied using regular expressions. The performance is great, but if
* you are adding a bunch of DOM elements using the same template, you can increase
* performance even further by {@link Ext.Template#compile "compiling"} the template.
* The way "{@link Ext.Template#compile compile()}" works is the template is parsed and
* broken up at the different variable points and a dynamic function is created and eval'ed.
* The generated function performs string concatenation of these parts and the passed
* variables instead of using regular expressions.
* <pre><code>
var html = '<a id="{id}" href="{url}" class="nav">{text}</a>';
var tpl = new Ext.DomHelper.createTemplate(html);
tpl.compile();
//... use template like normal
* </code></pre></p>
*
* <p><b><u>Performance Boost</u></b></p>
* <p>DomHelper will transparently create HTML fragments when it can. Using HTML fragments instead
* of DOM can significantly boost performance.</p>
* <p>Element creation specification parameters may also be strings. If {@link #useDom} is <tt>false</tt>,
* then the string is used as innerHTML. If {@link #useDom} is <tt>true</tt>, a string specification
* results in the creation of a text node. Usage:</p>
* <pre><code>
Ext.DomHelper.useDom = true; // force it to use DOM; reduces performance
* </code></pre>
* @singleton
*/
Ext.DomHelper = function(){
var tempTableEl = null,
emptyTags = /^(?:br|frame|hr|img|input|link|meta|range|spacer|wbr|area|param|col)$/i,
tableRe = /^table|tbody|tr|td$/i,
pub,
// kill repeat to save bytes
afterbegin = 'afterbegin',
afterend = 'afterend',
beforebegin = 'beforebegin',
beforeend = 'beforeend',
ts = '<table>',
te = '</table>',
tbs = ts+'<tbody>',
tbe = '</tbody>'+te,
trs = tbs + '<tr>',
tre = '</tr>'+tbe;
// private
function doInsert(el, o, returnElement, pos, sibling, append){
var newNode = pub.insertHtml(pos, Ext.getDom(el), createHtml(o));
return returnElement ? Ext.get(newNode, true) : newNode;
}
// build as innerHTML where available
function createHtml(o){
var b = '',
attr,
val,
key,
keyVal,
cn;
if(Ext.isString(o)){
b = o;
} else if (Ext.isArray(o)) {
Ext.each(o, function(v) {
b += createHtml(v);
});
} else {
b += '<' + (o.tag = o.tag || 'div');
Ext.iterate(o, function(attr, val){
if(!/tag|children|cn|html$/i.test(attr)){
if (Ext.isObject(val)) {
b += ' ' + attr + '="';
Ext.iterate(val, function(key, keyVal){
b += key + ':' + keyVal + ';';
});
b += '"';
}else{
b += ' ' + ({cls : 'class', htmlFor : 'for'}[attr] || attr) + '="' + val + '"';
}
}
});
// Now either just close the tag or try to add children and close the t