AbstractElement.traversal.html
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<!DOCTYPE html>
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<title>The source code</title>
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<pre class="prettyprint lang-js"><span id='Ext-dom-AbstractElement'>/**
</span> * @class Ext.dom.AbstractElement
*/
Ext.dom.AbstractElement.override({
<span id='Ext-dom-AbstractElement-method-findParent'> /**
</span> * Looks at this node and then at parent nodes for a match of the passed simple selector (e.g. div.some-class or span:first-child)
* @param {String} selector The simple selector to test
* @param {Number/String/HTMLElement/Ext.Element} [limit]
* The max depth to search as a number or an element which causes the upward traversal to stop
* and is <b>not</b> considered for inclusion as the result. (defaults to 50 || document.documentElement)
* @param {Boolean} [returnEl=false] True to return a Ext.Element object instead of DOM node
* @return {HTMLElement} The matching DOM node (or null if no match was found)
*/
findParent: function(simpleSelector, limit, returnEl) {
var target = this.dom,
topmost = document.documentElement,
depth = 0,
stopEl;
limit = limit || 50;
if (isNaN(limit)) {
stopEl = Ext.getDom(limit);
limit = Number.MAX_VALUE;
}
while (target && target.nodeType == 1 && depth < limit && target != topmost && target != stopEl) {
if (Ext.DomQuery.is(target, simpleSelector)) {
return returnEl ? Ext.get(target) : target;
}
depth++;
target = target.parentNode;
}
return null;
},
<span id='Ext-dom-AbstractElement-method-findParentNode'> /**
</span> * Looks at parent nodes for a match of the passed simple selector (e.g. div.some-class or span:first-child)
* @param {String} selector The simple selector to test
* @param {Number/String/HTMLElement/Ext.Element} [limit]
* The max depth to search as a number or an element which causes the upward traversal to stop
* and is <b>not</b> considered for inclusion as the result. (defaults to 50 || document.documentElement)
* @param {Boolean} [returnEl=false] True to return a Ext.Element object instead of DOM node
* @return {HTMLElement} The matching DOM node (or null if no match was found)
*/
findParentNode: function(simpleSelector, limit, returnEl) {
var p = Ext.fly(this.dom.parentNode, '_internal');
return p ? p.findParent(simpleSelector, limit, returnEl) : null;
},
<span id='Ext-dom-AbstractElement-method-up'> /**
</span> * Walks up the dom looking for a parent node that matches the passed simple selector (e.g. div.some-class or span:first-child).
* This is a shortcut for findParentNode() that always returns an Ext.dom.Element.
* @param {String} selector The simple selector to test
* @param {Number/String/HTMLElement/Ext.Element} [limit]
* The max depth to search as a number or an element which causes the upward traversal to stop
* and is <b>not</b> considered for inclusion as the result. (defaults to 50 || document.documentElement)
* @return {Ext.Element} The matching DOM node (or null if no match was found)
*/
up: function(simpleSelector, limit) {
return this.findParentNode(simpleSelector, limit, true);
},
<span id='Ext-dom-AbstractElement-method-select'> /**
</span> * Creates a {@link Ext.CompositeElement} for child nodes based on the passed CSS selector (the selector should not contain an id).
* @param {String} selector The CSS selector
* @param {Boolean} [unique] True to create a unique Ext.Element for each element. Defaults to a shared flyweight object.
* @return {Ext.CompositeElement} The composite element
*/
select: function(selector, composite) {
return Ext.dom.Element.select(selector, this.dom, composite);
},
<span id='Ext-dom-AbstractElement-method-query'> /**
</span> * Selects child nodes based on the passed CSS selector (the selector should not contain an id).
* @param {String} selector The CSS selector
* @return {HTMLElement[]} An array of the matched nodes
*/
query: function(selector) {
return Ext.DomQuery.select(selector, this.dom);
},
<span id='Ext-dom-AbstractElement-method-down'> /**
</span> * Selects a single child at any depth below this element based on the passed CSS selector (the selector should not contain an id).
* @param {String} selector The CSS selector
* @param {Boolean} [returnDom=false] True to return the DOM node instead of Ext.dom.Element
* @return {HTMLElement/Ext.dom.Element} The child Ext.dom.Element (or DOM node if returnDom = true)
*/
down: function(selector, returnDom) {
var n = Ext.DomQuery.selectNode(selector, this.dom);
return returnDom ? n : Ext.get(n);
},
<span id='Ext-dom-AbstractElement-method-child'> /**
</span> * Selects a single *direct* child based on the passed CSS selector (the selector should not contain an id).
* @param {String} selector The CSS selector
* @param {Boolean} [returnDom=false] True to return the DOM node instead of Ext.dom.Element.
* @return {HTMLElement/Ext.dom.Element} The child Ext.dom.Element (or DOM node if returnDom = true)
*/
child: function(selector, returnDom) {
var node,
me = this,
id;
// Pull the ID from the DOM (Ext.id also ensures that there *is* an ID).
// If this object is a Flyweight, it will not have an ID
id = Ext.id(me.dom);
// Escape "invalid" chars
id = Ext.escapeId(id);
node = Ext.DomQuery.selectNode('#' + id + " > " + selector, me.dom);
return returnDom ? node : Ext.get(node);
},
<span id='Ext-dom-AbstractElement-method-parent'> /**
</span> * Gets the parent node for this element, optionally chaining up trying to match a selector
* @param {String} [selector] Find a parent node that matches the passed simple selector
* @param {Boolean} [returnDom=false] True to return a raw dom node instead of an Ext.dom.Element
* @return {Ext.dom.Element/HTMLElement} The parent node or null
*/
parent: function(selector, returnDom) {
return this.matchNode('parentNode', 'parentNode', selector, returnDom);
},
<span id='Ext-dom-AbstractElement-method-next'> /**
</span> * Gets the next sibling, skipping text nodes
* @param {String} [selector] Find the next sibling that matches the passed simple selector
* @param {Boolean} [returnDom=false] True to return a raw dom node instead of an Ext.dom.Element
* @return {Ext.dom.Element/HTMLElement} The next sibling or null
*/
next: function(selector, returnDom) {
return this.matchNode('nextSibling', 'nextSibling', selector, returnDom);
},
<span id='Ext-dom-AbstractElement-method-prev'> /**
</span> * Gets the previous sibling, skipping text nodes
* @param {String} [selector] Find the previous sibling that matches the passed simple selector
* @param {Boolean} [returnDom=false] True to return a raw dom node instead of an Ext.dom.Element
* @return {Ext.dom.Element/HTMLElement} The previous sibling or null
*/
prev: function(selector, returnDom) {
return this.matchNode('previousSibling', 'previousSibling', selector, returnDom);
},
<span id='Ext-dom-AbstractElement-method-first'> /**
</span> * Gets the first child, skipping text nodes
* @param {String} [selector] Find the next sibling that matches the passed simple selector
* @param {Boolean} [returnDom=false] True to return a raw dom node instead of an Ext.dom.Element
* @return {Ext.dom.Element/HTMLElement} The first child or null
*/
first: function(selector, returnDom) {
return this.matchNode('nextSibling', 'firstChild', selector, returnDom);
},
<span id='Ext-dom-AbstractElement-method-last'> /**
</span> * Gets the last child, skipping text nodes
* @param {String} [selector] Find the previous sibling that matches the passed simple selector
* @param {Boolean} [returnDom=false] True to return a raw dom node instead of an Ext.dom.Element
* @return {Ext.dom.Element/HTMLElement} The last child or null
*/
last: function(selector, returnDom) {
return this.matchNode('previousSibling', 'lastChild', selector, returnDom);
},
matchNode: function(dir, start, selector, returnDom) {
if (!this.dom) {
return null;
}
var n = this.dom[start];
while (n) {
if (n.nodeType == 1 && (!selector || Ext.DomQuery.is(n, selector))) {
return !returnDom ? Ext.get(n) : n;
}
n = n[dir];
}
return null;
},
isAncestor: function(element) {
return this.self.isAncestor.call(this.self, this.dom, element);
}
});
</pre>
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