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+
+
+
+
+ The source code
+
+
+
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+
+
+
/**
+ * @class Ext.Element
+ */
+Ext.Element.addMethods({
+ /**
+ * 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} maxDepth (optional)
+ * The max depth to search as a number or element (defaults to 50 || document.body)
+ * @param {Boolean} returnEl (optional) 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, maxDepth, returnEl) {
+ var p = this.dom,
+ b = document.body,
+ depth = 0,
+ stopEl;
+
+ maxDepth = maxDepth || 50;
+ if (isNaN(maxDepth)) {
+ stopEl = Ext.getDom(maxDepth);
+ maxDepth = Number.MAX_VALUE;
+ }
+ while (p && p.nodeType == 1 && depth < maxDepth && p != b && p != stopEl) {
+ if (Ext.DomQuery.is(p, simpleSelector)) {
+ return returnEl ? Ext.get(p) : p;
+ }
+ depth++;
+ p = p.parentNode;
+ }
+ return null;
+ },
+
+ /**
+ * 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} maxDepth (optional)
+ * The max depth to search as a number or element (defaults to 10 || document.body)
+ * @param {Boolean} returnEl (optional) 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, maxDepth, returnEl) {
+ var p = Ext.fly(this.dom.parentNode, '_internal');
+ return p ? p.findParent(simpleSelector, maxDepth, returnEl) : null;
+ },
+
+ /**
+ * 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.Element.
+ * @param {String} selector The simple selector to test
+ * @param {Number/String/HTMLElement/Ext.Element} maxDepth (optional)
+ * The max depth to search as a number or element (defaults to 10 || document.body)
+ * @return {Ext.Element} The matching DOM node (or null if no match was found)
+ */
+ up : function(simpleSelector, maxDepth) {
+ return this.findParentNode(simpleSelector, maxDepth, true);
+ },
+
+ /**
+ * 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
+ * @return {Ext.CompositeElement/Ext.CompositeElement} The composite element
+ */
+ select : function(selector) {
+ return Ext.Element.select(selector, false, this.dom);
+ },
+
+ /**
+ * 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);
+ },
+
+ /**
+ * 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 (optional) True to return the DOM node instead of Ext.Element (defaults to false)
+ * @return {HTMLElement/Ext.Element} The child Ext.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);
+ },
+
+ /**
+ * 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 (optional) True to return the DOM node instead of Ext.Element (defaults to false)
+ * @return {HTMLElement/Ext.Element} The child Ext.Element (or DOM node if returnDom = true)
+ */
+ child : function(selector, returnDom) {
+ var node,
+ me = this,
+ id;
+ id = Ext.get(me).id;
+ // Escape . or :
+ id = id.replace(/[\.:]/g, "\\$0");
+ node = Ext.DomQuery.selectNode('#' + id + " > " + selector, me.dom);
+ return returnDom ? node : Ext.get(node);
+ },
+
+ /**
+ * Gets the parent node for this element, optionally chaining up trying to match a selector
+ * @param {String} selector (optional) Find a parent node that matches the passed simple selector
+ * @param {Boolean} returnDom (optional) True to return a raw dom node instead of an Ext.Element
+ * @return {Ext.Element/HTMLElement} The parent node or null
+ */
+ parent : function(selector, returnDom) {
+ return this.matchNode('parentNode', 'parentNode', selector, returnDom);
+ },
+
+ /**
+ * Gets the next sibling, skipping text nodes
+ * @param {String} selector (optional) Find the next sibling that matches the passed simple selector
+ * @param {Boolean} returnDom (optional) True to return a raw dom node instead of an Ext.Element
+ * @return {Ext.Element/HTMLElement} The next sibling or null
+ */
+ next : function(selector, returnDom) {
+ return this.matchNode('nextSibling', 'nextSibling', selector, returnDom);
+ },
+
+ /**
+ * Gets the previous sibling, skipping text nodes
+ * @param {String} selector (optional) Find the previous sibling that matches the passed simple selector
+ * @param {Boolean} returnDom (optional) True to return a raw dom node instead of an Ext.Element
+ * @return {Ext.Element/HTMLElement} The previous sibling or null
+ */
+ prev : function(selector, returnDom) {
+ return this.matchNode('previousSibling', 'previousSibling', selector, returnDom);
+ },
+
+
+ /**
+ * Gets the first child, skipping text nodes
+ * @param {String} selector (optional) Find the next sibling that matches the passed simple selector
+ * @param {Boolean} returnDom (optional) True to return a raw dom node instead of an Ext.Element
+ * @return {Ext.Element/HTMLElement} The first child or null
+ */
+ first : function(selector, returnDom) {
+ return this.matchNode('nextSibling', 'firstChild', selector, returnDom);
+ },
+
+ /**
+ * Gets the last child, skipping text nodes
+ * @param {String} selector (optional) Find the previous sibling that matches the passed simple selector
+ * @param {Boolean} returnDom (optional) True to return a raw dom node instead of an Ext.Element
+ * @return {Ext.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;
+ }
+});
+