/**
* The Node Utility provides a DOM-like interface for interacting with DOM nodes.
* @module node
* @submodule node-base
*/
/**
* The Node class provides a wrapper for manipulating DOM Nodes.
* Node properties can be accessed via the set/get methods.
* Use Y.get() to retrieve Node instances.
*
* <strong>NOTE:</strong> Node properties are accessed using
* the <code>set</code> and <code>get</code> methods.
*
* @class Node
* @constructor
* @param {DOMNode} node the DOM node to be mapped to the Node instance.
* @for Node
*/
// "globals"
var DOT = '.',
NODE_NAME = 'nodeName',
NODE_TYPE = 'nodeType',
OWNER_DOCUMENT = 'ownerDocument',
TAG_NAME = 'tagName',
UID = '_yuid',
Y_DOM = Y.DOM,
Y_Node = function(node) {
var uid = node[UID];
if (uid && Y_Node._instances[uid] && Y_Node._instances[uid]._node !== node) {
node[UID] = null; // unset existing uid to prevent collision (via clone or hack)
}
uid = Y.stamp(node);
if (!uid) { // stamp failed; likely IE non-HTMLElement
uid = Y.guid();
}
this[UID] = uid;
/**
* The underlying DOM node bound to the Y.Node instance
* @property _node
* @private
*/
this._node = node;
Y_Node._instances[uid] = this;
this._stateProxy = node; // when augmented with Attribute
if (this._initPlugins) { // when augmented with Plugin.Host
this._initPlugins();
}
},
// used with previous/next/ancestor tests
_wrapFn = function(fn) {
var ret = null;
if (fn) {
ret = (typeof fn === 'string') ?
function(n) {
return Y.Selector.test(n, fn);
} :
function(n) {
return fn(Y.one(n));
};
}
return ret;
};
// end "globals"
/**
* The name of the component
* @static
* @property NAME
*/
Y_Node.NAME = 'node';
/*
* The pattern used to identify ARIA attributes
*/
Y_Node.re_aria = /^(?:role$|aria-)/;
/**
* List of events that route to DOM events
* @static
* @property DOM_EVENTS
*/
Y_Node.DOM_EVENTS = {
abort: 1,
beforeunload: 1,
blur: 1,
change: 1,
changedTouches: 1, // iphone
click: 1,
close: 1,
command: 1,
contextmenu: 1,
dblclick: 1,
DOMMouseScroll: 1,
drag: 1,
dragstart: 1,
dragenter: 1,
dragover: 1,
dragleave: 1,
dragend: 1,
drop: 1,
error: 1,
focus: 1,
identifier: 1, // iphone
key: 1,
keydown: 1,
keypress: 1,
keyup: 1,
load: 1,
message: 1,
mousedown: 1,
mouseenter: 1,
mouseleave: 1,
mousemove: 1,
mousemultiwheel: 1,
mouseout: 1,
mouseover: 1,
mouseup: 1,
mousewheel: 1,
reset: 1,
resize: 1,
rotation: 1, // iphone
scale: 1, // iphone
select: 1,
submit: 1,
scroll: 1,
targetTouches: 1, // iphone
textInput: 1,
touches: 1, // iphone
unload: 1
};
// Add custom event adaptors to this list. This will make it so
// that delegate, key, available, contentready, etc all will
// be available through Node.on
Y.mix(Y_Node.DOM_EVENTS, Y.Env.evt.plugins);
/**
* A list of Node instances that have been created
* @private
* @property _instances
* @static
*
*/
Y_Node._instances = {};
/**
* Retrieves the DOM node bound to a Node instance
* @method getDOMNode
* @static
*
* @param {Y.Node || HTMLNode} node The Node instance or an HTMLNode
* @return {HTMLNode} The DOM node bound to the Node instance. If a DOM node is passed
* as the node argument, it is simply returned.
*/
Y_Node.getDOMNode = function(node) {
if (node) {
return (node.nodeType) ? node : node._node || null;
}
return null;
};
/**
* Checks Node return values and wraps DOM Nodes as Y.Node instances
* and DOM Collections / Arrays as Y.NodeList instances.
* Other return values just pass thru. If undefined is returned (e.g. no return)
* then the Node instance is returned for chainability.
* @method scrubVal
* @static
*
* @param {any} node The Node instance or an HTMLNode
* @return {Y.Node | Y.NodeList | any} Depends on what is returned from the DOM node.
*/
Y_Node.scrubVal = function(val, node) {
if (node && val) { // only truthy values are risky
if (typeof val === 'object' || typeof val === 'function') { // safari nodeList === function
if (NODE_TYPE in val || Y_DOM.isWindow(val)) {// node || window
val = Y.one(val);
} else if ((val.item && !val._nodes) || // dom collection or Node instance
(val[0] && val[0][NODE_TYPE])) { // array of DOM Nodes
val = Y.all(val);
}
}
} else if (val === undefined) {
val = node; // for chaining
}
return val;
};
/**
* Adds methods to the Y.Node prototype, routing through scrubVal.
* @method addMethod
* @static
*
* @param {String} name The name of the method to add
* @param {Function} fn The function that becomes the method
* @param {Object} context An optional context to call the method with
* (defaults to the Node instance)
* @return {any} Depends on what is returned from the DOM node.
*/
Y_Node.addMethod = function(name, fn, context) {
if (name && fn && typeof fn === 'function') {
Y_Node.prototype[name] = function() {
context = context || this;
var args = Y.Array(arguments, 0, true),
ret;
if (args[0] && args[0] instanceof Y_Node) {
args[0] = args[0]._node;
}
if (args[1] && args[1] instanceof Y_Node) {
args[1] = args[1]._node;
}
args.unshift(this._node);
ret = Y_Node.scrubVal(fn.apply(context, args), this);
return ret;
};
} else {
Y.log('unable to add method: ' + name, 'warn', 'Node');
}
};
/**
* Imports utility methods to be added as Y.Node methods.
* @method importMethod
* @static
*
* @param {Object} host The object that contains the method to import.
* @param {String} name The name of the method to import
* @param {String} altName An optional name to use in place of the host name
* @param {Object} context An optional context to call the method with
*/
Y_Node.importMethod = function(host, name, altName) {
if (typeof name === 'string') {
altName = altName || name;
Y_Node.addMethod(altName, host[name], host);
} else {
Y.Array.each(name, function(n) {
Y_Node.importMethod(host, n);
});
}
};
/**
* Returns a single Node instance bound to the node or the
* first element matching the given selector. Returns null if no match found.
* <strong>Note:</strong> For chaining purposes you may want to
* use <code>Y.all</code>, which returns a NodeList when no match is found.
* @method Y.one
* @static
* @param {String | HTMLElement} node a node or Selector
* @return {Y.Node | null} a Node instance or null if no match found.
*/
Y_Node.one = function(node) {
var instance = null,
cachedNode,
uid;
if (node) {
if (typeof node === 'string') {
if (node.indexOf('doc') === 0) { // doc OR document
node = Y.config.doc;
} else if (node.indexOf('win') === 0) { // win OR window
node = Y.config.win;
} else {
node = Y.Selector.query(node, null, true);
}
if (!node) {
return null;
}
} else if (node instanceof Y_Node) {
return node; // NOTE: return
}
uid = node._yuid;
instance = Y_Node._instances[uid]; // reuse exising instances
cachedNode = instance ? instance._node : null;
if (!instance || (cachedNode && node !== cachedNode)) { // new Node when nodes don't match
instance = new Y_Node(node);
}
}
return instance;
};
/**
* Returns a single Node instance bound to the node or the
* first element matching the given selector.
* @method Y.get
* @deprecated Use Y.one
* @static
* @param {String | HTMLElement} node a node or Selector
* @param {Y.Node || HTMLElement} doc an optional document to scan. Defaults to Y.config.doc.
*/
Y_Node.get = function() {
Y.log('Y.get is deprecated, use Y.one', 'warn', 'deprecated');
return Y_Node.one.apply(Y_Node, arguments);
};
/**
* Creates a new dom node using the provided markup string.
* @method create
* @static
* @param {String} html The markup used to create the element
* @param {HTMLDocument} doc An optional document context
* @return {Node} A Node instance bound to a DOM node or fragment
*/
Y_Node.create = function() {
return Y.one(Y_DOM.create.apply(Y_DOM, arguments));
};
/**
* Static collection of configuration attributes for special handling
* @property ATTRS
* @static
* @type object
*/
Y_Node.ATTRS = {
/**
* Allows for getting and setting the text of an element.
* Formatting is preserved and special characters are treated literally.
* @config text
* @type String
*/
text: {
getter: function() {
return Y_DOM.getText(this._node);
},
setter: function(content) {
Y_DOM.setText(this._node, content);
return content;
}
},
'options': {
getter: function() {
return this._node.getElementsByTagName('option');
}
},
// IE: elements collection is also FORM node which trips up scrubVal.
// preconverting to NodeList
// TODO: break out for IE only
'elements': {
getter: function() {
return Y.all(this._node.elements);
}
},
/**
* Returns a NodeList instance of all HTMLElement children.
* @readOnly
* @config children
* @type NodeList
*/
'children': {
getter: function() {
var node = this._node,
children = node.children,
childNodes, i, len;
if (!children) {
childNodes = node.childNodes;
children = [];
for (i = 0, len = childNodes.length; i < len; ++i) {
if (childNodes[i][TAG_NAME]) {
children[children.length] = childNodes[i];
}
}
}
return Y.all(children);
}
},
value: {
getter: function() {
return Y_DOM.getValue(this._node);
},
setter: function(val) {
Y_DOM.setValue(this._node, val);
return val;
}
},
/*
* Flat data store for off-DOM usage
* @config data
* @type any
* @deprecated Use getData/setData
*/
data: {
getter: function() {
return this._dataVal;
},
setter: function(val) {
this._dataVal = val;
return val;
},
value: null
}
};
/**
* The default setter for DOM properties
* Called with instance context (this === the Node instance)
* @method DEFAULT_SETTER
* @static
* @param {String} name The attribute/property being set
* @param {any} val The value to be set
* @return {any} The value
*/
Y_Node.DEFAULT_SETTER = function(name, val) {
var node = this._stateProxy,
strPath;
if (name.indexOf(DOT) > -1) {
strPath = name;
name = name.split(DOT);
// only allow when defined on node
Y.Object.setValue(node, name, val);
} else if (node[name] !== undefined) { // pass thru DOM properties
node[name] = val;
}
return val;
};
/**
* The default getter for DOM properties
* Called with instance context (this === the Node instance)
* @method DEFAULT_GETTER
* @static
* @param {String} name The attribute/property to look up
* @return {any} The current value
*/
Y_Node.DEFAULT_GETTER = function(name) {
var node = this._stateProxy,
val;
if (name.indexOf && name.indexOf(DOT) > -1) {
val = Y.Object.getValue(node, name.split(DOT));
} else if (node[name] !== undefined) { // pass thru from DOM
val = node[name];
}
return val;
};
Y.augment(Y_Node, Y.Event.Target);
Y.mix(Y_Node.prototype, {
/**
* The method called when outputting Node instances as strings
* @method toString
* @return {String} A string representation of the Node instance
*/
toString: function() {
var str = '',
errorMsg = this[UID] + ': not bound to a node',
node = this._node,
id = node.getAttribute('id'); // form.id may be a field name
if (node) {
str += node[NODE_NAME];
if (id) {
str += '#' + id;
}
if (node.className) {
str += '.' + node.className.replace(' ', '.');
}
// TODO: add yuid?
str += ' ' + this[UID];
}
return str || errorMsg;
},
/**
* Returns an attribute value on the Node instance.
* Unless pre-configured (via Node.ATTRS), get hands
* off to the underlying DOM node. Only valid
* attributes/properties for the node will be set.
* @method get
* @param {String} attr The attribute
* @return {any} The current value of the attribute
*/
get: function(attr) {
var val;
if (this._getAttr) { // use Attribute imple
val = this._getAttr(attr);
} else {
val = this._get(attr);
}
if (val) {
val = Y_Node.scrubVal(val, this);
}
return val;
},
/**
* Helper method for get.
* @method _get
* @private
* @param {String} attr The attribute
* @return {any} The current value of the attribute
*/
_get: function(attr) {
var attrConfig = Y_Node.ATTRS[attr],
val;
if (attrConfig && attrConfig.getter) {
val = attrConfig.getter.call(this);
} else if (Y_Node.re_aria.test(attr)) {
val = this._node.getAttribute(attr, 2);
} else {
val = Y_Node.DEFAULT_GETTER.apply(this, arguments);
}
return val;
},
/**
* Sets an attribute on the Node instance.
* Unless pre-configured (via Node.ATTRS), set hands
* off to the underlying DOM node. Only valid
* attributes/properties for the node will be set.
* To set custom attributes use setAttribute.
* @method set
* @param {String} attr The attribute to be set.
* @param {any} val The value to set the attribute to.
* @chainable
*/
set: function(attr, val) {
var attrConfig = Y_Node.ATTRS[attr];
if (this._setAttr) { // use Attribute imple
this._setAttr.apply(this, arguments);
} else { // use setters inline
if (attrConfig && attrConfig.setter) {
attrConfig.setter.call(this, val);
} else if (Y_Node.re_aria.test(attr)) { // special case Aria
this._node.setAttribute(attr, val);
} else {
Y_Node.DEFAULT_SETTER.apply(this, arguments);
}
}
return this;
},
/**
* Sets multiple attributes.
* @method setAttrs
* @param {Object} attrMap an object of name/value pairs to set
* @chainable
*/
setAttrs: function(attrMap) {
if (this._setAttrs) { // use Attribute imple
this._setAttrs(attrMap);
} else { // use setters inline
Y.Object.each(attrMap, function(v, n) {
this.set(n, v);
}, this);
}
return this;
},
/**
* Returns an object containing the values for the requested attributes.
* @method getAttrs
* @param {Array} attrs an array of attributes to get values
* @return {Object} An object with attribute name/value pairs.
*/
getAttrs: function(attrs) {
var ret = {};
if (this._getAttrs) { // use Attribute imple
this._getAttrs(attrs);
} else { // use setters inline
Y.Array.each(attrs, function(v, n) {
ret[v] = this.get(v);
}, this);
}
return ret;
},
/**
* Creates a new Node using the provided markup string.
* @method create
* @param {String} html The markup used to create the element
* @param {HTMLDocument} doc An optional document context
* @return {Node} A Node instance bound to a DOM node or fragment
*/
create: Y_Node.create,
/**
* Compares nodes to determine if they match.
* Node instances can be compared to each other and/or HTMLElements.
* @method compareTo
* @param {HTMLElement | Node} refNode The reference node to compare to the node.
* @return {Boolean} True if the nodes match, false if they do not.
*/
compareTo: function(refNode) {
var node = this._node;
if (refNode instanceof Y_Node) {
refNode = refNode._node;
}
return node === refNode;
},
/**
* Determines whether the node is appended to the document.
* @method inDoc
* @param {Node|HTMLElement} doc optional An optional document to check against.
* Defaults to current document.
* @return {Boolean} Whether or not this node is appended to the document.
*/
inDoc: function(doc) {
var node = this._node;
doc = (doc) ? doc._node || doc : node[OWNER_DOCUMENT];
if (doc.documentElement) {
return Y_DOM.contains(doc.documentElement, node);
}
},
getById: function(id) {
var node = this._node,
ret = Y_DOM.byId(id, node[OWNER_DOCUMENT]);
if (ret && Y_DOM.contains(node, ret)) {
ret = Y.one(ret);
} else {
ret = null;
}
return ret;
},
/**
* Returns the nearest ancestor that passes the test applied by supplied boolean method.
* @method ancestor
* @param {String | Function} fn A selector string or boolean method for testing elements.
* @param {Boolean} testSelf optional Whether or not to include the element in the scan
* If a function is used, it receives the current node being tested as the only argument.
* @return {Node} The matching Node instance or null if not found
*/
ancestor: function(fn, testSelf) {
return Y.one(Y_DOM.ancestor(this._node, _wrapFn(fn), testSelf));
},
/**
* Returns the previous matching sibling.
* Returns the nearest element node sibling if no method provided.
* @method previous
* @param {String | Function} fn A selector or boolean method for testing elements.
* If a function is used, it receives the current node being tested as the only argument.
* @return {Node} Node instance or null if not found
*/
previous: function(fn, all) {
return Y.one(Y_DOM.elementByAxis(this._node, 'previousSibling', _wrapFn(fn), all));
},
/**
* Returns the next matching sibling.
* Returns the nearest element node sibling if no method provided.
* @method next
* @param {String | Function} fn A selector or boolean method for testing elements.
* If a function is used, it receives the current node being tested as the only argument.
* @return {Node} Node instance or null if not found
*/
next: function(fn, all) {
return Y.one(Y_DOM.elementByAxis(this._node, 'nextSibling', _wrapFn(fn), all));
},
/**
* Returns all matching siblings.
* Returns all siblings if no method provided.
* @method siblings
* @param {String | Function} fn A selector or boolean method for testing elements.
* If a function is used, it receives the current node being tested as the only argument.
* @return {NodeList} NodeList instance bound to found siblings
*/
siblings: function(fn) {
return Y.all(Y_DOM.siblings(this._node, _wrapFn(fn)));
},
/**
* Retrieves a Node instance of nodes based on the given CSS selector.
* @method one
*
* @param {string} selector The CSS selector to test against.
* @return {Node} A Node instance for the matching HTMLElement.
*/
one: function(selector) {
return Y.one(Y.Selector.query(selector, this._node, true));
},
/**
* Retrieves a Node instance of nodes based on the given CSS selector.
* @method query
* @deprecated Use one()
* @param {string} selector The CSS selector to test against.
* @return {Node} A Node instance for the matching HTMLElement.
*/
query: function(selector) {
Y.log('query() is deprecated, use one()', 'warn', 'deprecated');
return this.one(selector);
},
/**
* Retrieves a nodeList based on the given CSS selector.
* @method all
*
* @param {string} selector The CSS selector to test against.
* @return {NodeList} A NodeList instance for the matching HTMLCollection/Array.
*/
all: function(selector) {
var nodelist = Y.all(Y.Selector.query(selector, this._node));
nodelist._query = selector;
nodelist._queryRoot = this._node;
return nodelist;
},
/**
* Retrieves a nodeList based on the given CSS selector.
* @method queryAll
* @deprecated Use all()
* @param {string} selector The CSS selector to test against.
* @return {NodeList} A NodeList instance for the matching HTMLCollection/Array.
*/
queryAll: function(selector) {
Y.log('queryAll() is deprecated, use all()', 'warn', 'deprecated');
return this.all(selector);
},
// TODO: allow fn test
/**
* Test if the supplied node matches the supplied selector.
* @method test
*
* @param {string} selector The CSS selector to test against.
* @return {boolean} Whether or not the node matches the selector.
*/
test: function(selector) {
return Y.Selector.test(this._node, selector);
},
/**
* Removes the node from its parent.
* Shortcut for myNode.get('parentNode').removeChild(myNode);
* @method remove
* @chainable
*
*/
remove: function(destroy) {
var node = this._node,
parentNode = node.parentNode;
if (parentNode) {
parentNode.removeChild(node);
}
if (destroy) {
this.destroy(true);
}
return this;
},
/**
* Replace the node with the other node. This is a DOM update only
* and does not change the node bound to the Node instance.
* Shortcut for myNode.get('parentNode').replaceChild(newNode, myNode);
* @method replace
* @param {Y.Node || HTMLNode} newNode Node to be inserted
* @chainable
*
*/
replace: function(newNode) {
var node = this._node;
node.parentNode.replaceChild(Y_Node.getDOMNode(newNode), node);
return this;
},
/**
* Removes event listeners from the node and (optionally) its subtree
* @method purge
* @param {Boolean} recurse (optional) Whether or not to remove listeners from the
* node's subtree
* @param {String} type (optional) Only remove listeners of the specified type
* @chainable
*
*/
purge: function(recurse, type) {
Y.Event.purgeElement(this._node, recurse, type);
return this;
},
/**
* Nulls internal node references, removes any plugins and event listeners
* @method destroy
* @param {Boolean} recursivePurge (optional) Whether or not to remove listeners from the
* node's subtree (default is false)
*
*/
destroy: function(recursivePurge) {
delete Y_Node._instances[this[UID]];
this.purge(recursivePurge);
if (this.unplug) { // may not be a PluginHost
this.unplug();
}
this._node._yuid = null;
this._node = null;
this._stateProxy = null;
},
/**
* Invokes a method on the Node instance
* @method invoke
* @param {String} method The name of the method to invoke
* @param {Any} a, b, c, etc. Arguments to invoke the method with.
* @return Whatever the underly method returns.
* DOM Nodes and Collections return values
* are converted to Node/NodeList instances.
*
*/
invoke: function(method, a, b, c, d, e) {
var node = this._node,
ret;
if (a && a instanceof Y_Node) {
a = a._node;
}
if (b && b instanceof Y_Node) {
b = b._node;
}
ret = node[method](a, b, c, d, e);
return Y_Node.scrubVal(ret, this);
},
/**
* Applies the given function to each Node in the NodeList.
* @method each
* @deprecated Use NodeList
* @param {Function} fn The function to apply
* @param {Object} context optional An optional context to apply the function with
* Default context is the NodeList instance
* @chainable
*/
each: function(fn, context) {
context = context || this;
Y.log('each is deprecated on Node', 'warn', 'deprecated');
return fn.call(context, this);
},
/**
* Retrieves the Node instance at the given index.
* @method item
* @deprecated Use NodeList
*
* @param {Number} index The index of the target Node.
* @return {Node} The Node instance at the given index.
*/
item: function(index) {
Y.log('item is deprecated on Node', 'warn', 'deprecated');
return this;
},
/**
* Returns the current number of items in the Node.
* @method size
* @deprecated Use NodeList
* @return {Int} The number of items in the Node.
*/
size: function() {
Y.log('size is deprecated on Node', 'warn', 'deprecated');
return this._node ? 1 : 0;
},
/**
* Inserts the content before the reference node.
* @method insert
* @param {String | Y.Node | HTMLElement} content The content to insert
* @param {Int | Y.Node | HTMLElement | String} where The position to insert at.
* @chainable
*/
insert: function(content, where) {
var node = this._node;
if (content) {
if (typeof where === 'number') { // allow index
where = this._node.childNodes[where];
} else if (where && where._node) { // Node
where = where._node;
}
if (typeof content !== 'string') { // allow Node or NodeList/Array instances
if (content._node) { // Node
content = content._node;
} else if (content._nodes || (!content.nodeType && content.length)) { // NodeList or Array
content = Y.all(content);
Y.each(content._nodes, function(n) {
Y_DOM.addHTML(node, n, where);
});
return this; // NOTE: early return
}
}
Y_DOM.addHTML(node, content, where);
} else {
Y.log('unable to insert content ' + content, 'warn', 'node');
}
return this;
},
/**
* Inserts the content as the firstChild of the node.
* @method prepend
* @param {String | Y.Node | HTMLElement} content The content to insert
* @chainable
*/
prepend: function(content) {
return this.insert(content, 0);
},
/**
* Inserts the content as the lastChild of the node.
* @method append
* @param {String | Y.Node | HTMLElement} content The content to insert
* @chainable
*/
append: function(content) {
return this.insert(content, null);
},
/**
* Replaces the node's current content with the content.
* @method setContent
* @param {String | Y.Node | HTMLElement} content The content to insert
* @chainable
*/
setContent: function(content) {
if (content) {
if (content._node) { // map to DOMNode
content = content._node;
} else if (content._nodes) { // convert DOMNodeList to documentFragment
content = Y_DOM._nl2Frag(content._nodes);
}
}
Y_DOM.addHTML(this._node, content, 'replace');
return this;
},
/**
* @method swap
* @description Swap DOM locations with the given node.
* This does not change which DOM node each Node instance refers to.
* @param {Node} otherNode The node to swap with
* @chainable
*/
swap: document.documentElement.swapNode ?
function(otherNode) {
this._node.swapNode(Y_Node.getDOMNode(otherNode));
} :
function(otherNode) {
otherNode = Y_Node.getDOMNode(otherNode);
var node = this._node,
parent = otherNode.parentNode,
nextSibling = otherNode.nextSibling;
if (nextSibling === node) {
parent.insertBefore(node, otherNode);
} else if (otherNode === node.nextSibling) {
parent.insertBefore(otherNode, node);
} else {
node.parentNode.replaceChild(otherNode, node);
Y_DOM.addHTML(parent, node, nextSibling);
}
return this;
},
/**
* @method getData
* @description Retrieves arbitrary data stored on a Node instance.
* This is not stored with the DOM node.
* @param {string} name Optional name of the data field to retrieve.
* If no name is given, all data is returned.
* @return {any | Object} Whatever is stored at the given field,
* or an object hash of all fields.
*/
getData: function(name) {
var ret;
this._data = this._data || {};
if (arguments.length) {
ret = this._data[name];
} else {
ret = this._data;
}
return ret;
},
/**
* @method setData
* @description Stores arbitrary data on a Node instance.
* This is not stored with the DOM node.
* @param {string} name The name of the field to set. If no name
* is given, name is treated as the data and overrides any existing data.
* @chainable
*/
setData: function(name, val) {
this._data = this._data || {};
if (arguments.length > 1) {
this._data[name] = val;
} else {
this._data = name;
}
return this;
},
/**
* @method clearData
* @description Clears stored data.
* @param {string} name The name of the field to clear. If no name
* is given, all data is cleared..
* @chainable
*/
clearData: function(name) {
if (arguments.length) {
delete this._data[name];
} else {
this._data = {};
}
return this;
},
hasMethod: function(method) {
var node = this._node;
return (node && node[method] && (typeof node[method] === 'function'));
}
}, true);
Y.Node = Y_Node;
Y.get = Y.Node.get;
Y.one = Y.Node.one;