widget-base-debug.js revision 8f943638800c6b5b82cb3c907e03f02186b562f8
YUI.add('widget-base', function(Y) {
/**
* Provides the base Widget class
*
* @module widget
*/
var L = Y.Lang,
Node = Y.Node,
ClassNameManager = Y.ClassNameManager,
_getClassName = ClassNameManager.getClassName,
_getWidgetClassName,
_toInitialCap = Y.cached(function(str) {
return str.substring(0, 1).toUpperCase() + str.substring(1);
}),
// K-Weight, IE GC optimizations
CONTENT = "content",
VISIBLE = "visible",
HIDDEN = "hidden",
DISABLED = "disabled",
FOCUSED = "focused",
WIDTH = "width",
HEIGHT = "height",
BOUNDING_BOX = "boundingBox",
CONTENT_BOX = "contentBox",
PARENT_NODE = "parentNode",
OWNER_DOCUMENT = "ownerDocument",
OFFSET_HEIGHT = "offsetHeight",
AUTO = "auto",
SRC_NODE = "srcNode",
BODY = "body",
TAB_INDEX = "tabIndex",
ID = "id",
RENDER = "render",
RENDERED = "rendered",
DESTROYED = "destroyed",
STRINGS = "strings",
DIV = "<div></div>",
CHANGE = "Change",
LOADING = "loading",
_UISET = "_uiSet",
EMPTY_STR = "",
EMPTY_FN = function() {},
UI_EVENT_REGEX = /(\w+):(\w+)/,
UI_EVENT_REGEX_REPLACE = "$2",
TRUE = true,
FALSE = false,
UI,
ATTRS = {},
UI_ATTRS = [VISIBLE, DISABLED, HEIGHT, WIDTH, FOCUSED],
WEBKIT = Y.UA.webkit,
IE = Y.UA.ie,
ContentUpdate = "contentUpdate",
// Map of Node instances serving as a delegation containers for a specific
// event type to Widget instances using that delegation container.
_delegates = {},
// Widget nodeguid-to-instance map.
_instances = {},
moduleName = arguments[1];
/**
* A base class for widgets, providing:
* <ul>
* <li>The render lifecycle method, in addition to the init and destroy
* lifecycle methods provide by Base</li>
* <li>Abstract methods to support consistent MVC structure across
* widgets: renderer, renderUI, bindUI, syncUI</li>
* <li>Support for common widget attributes, such as boundingBox, contentBox, visible,
* disabled, focused, strings</li>
* </ul>
*
* @param config {Object} Object literal specifying widget configuration properties.
*
* @class Widget
* @constructor
* @extends Base
*/
function Widget(config) {
Y.log('constructor called', 'life', 'widget');
this._strs = {};
this._cssPrefix = this.constructor.CSS_PREFIX || _getClassName(this.constructor.NAME.toLowerCase());
Widget.superclass.constructor.apply(this, arguments);
var render = this.get(RENDER), parentNode;
if (render) {
// Render could be a node or boolean
if (render !== TRUE) {
parentNode = render;
}
this.render(parentNode);
}
}
/**
* Static property provides a string to identify the class.
* <p>
* Currently used to apply class identifiers to the bounding box
* and to classify events fired by the widget.
* </p>
*
* @property Widget.NAME
* @type String
* @static
*/
Widget.NAME = "widget";
/**
* Constant used to identify state changes originating from
* the DOM (as opposed to the JavaScript model).
*
* @property Widget.UI_SRC
* @type String
* @static
* @final
*/
UI = Widget.UI_SRC = "ui";
/**
* Static property used to define the default attribute
* configuration for the Widget.
*
* @property Widget.ATTRS
* @type Object
* @static
*/
Widget.ATTRS = ATTRS;
// Trying to optimize kweight by setting up attrs this way saves about 0.4K min'd
/**
* @attribute id
* @writeOnce
* @default Generated using guid()
* @type String
*/
ATTRS[ID] = {
valueFn: "_guid",
writeOnce: TRUE
};
/**
* Flag indicating whether or not this Widget
* has been through the render lifecycle phase.
*
* @attribute rendered
* @readOnly
* @default false
* @type boolean
*/
ATTRS[RENDERED] = {
value:FALSE,
readOnly: TRUE
};
/**
* @attribute boundingBox
* @description The outermost DOM node for the Widget, used for sizing and positioning
* of a Widget as well as a containing element for any decorator elements used
* for skinning.
* @type String | Node
* @writeOnce
*/
ATTRS[BOUNDING_BOX] = {
value:null,
setter: "_setBB",
writeOnce: TRUE
};
/**
* @attribute contentBox
* @description A DOM node that is a direct descendent of a Widget's bounding box that
* houses its content.
* @type String | Node
* @writeOnce
*/
ATTRS[CONTENT_BOX] = {
valueFn:"_defaultCB",
setter: "_setCB",
writeOnce: TRUE
};
/**
* @attribute tabIndex
* @description Number (between -32767 to 32767) indicating the widget's
* position in the default tab flow. The value is used to set the
* "tabIndex" attribute on the widget's bounding box. Negative values allow
* the widget to receive DOM focus programmatically (by calling the focus
* method), while being removed from the default tab flow. A value of
* null removes the "tabIndex" attribute from the widget's bounding box.
* @type Number
* @default 0
*/
ATTRS[TAB_INDEX] = {
value: null,
validator: "_validTabIndex"
};
/**
* @attribute focused
* @description Boolean indicating if the Widget, or one of its descendants,
* has focus.
* @readOnly
* @default false
* @type boolean
*/
ATTRS[FOCUSED] = {
value: FALSE,
readOnly:TRUE
};
/**
* @attribute disabled
* @description Boolean indicating if the Widget should be disabled. The disabled implementation
* is left to the specific classes extending widget.
* @default false
* @type boolean
*/
ATTRS[DISABLED] = {
value: FALSE
};
/**
* @attribute visible
* @description Boolean indicating weather or not the Widget is visible.
* @default TRUE
* @type boolean
*/
ATTRS[VISIBLE] = {
value: TRUE
};
/**
* @attribute height
* @description String with units, or number, representing the height of the Widget. If a number is provided,
* the default unit, defined by the Widgets DEF_UNIT, property is used.
* @default EMPTY_STR
* @type {String | Number}
*/
ATTRS[HEIGHT] = {
value: EMPTY_STR
};
/**
* @attribute width
* @description String with units, or number, representing the width of the Widget. If a number is provided,
* the default unit, defined by the Widgets DEF_UNIT, property is used.
* @default EMPTY_STR
* @type {String | Number}
*/
ATTRS[WIDTH] = {
value: EMPTY_STR
};
/**
* @attribute strings
* @description Collection of strings used to label elements of the Widget's UI.
* @default null
* @type Object
*/
ATTRS[STRINGS] = {
valueFn: "_defStrValue",
setter: "_strSetter",
getter: "_strGetter"
};
/**
* Whether or not to render the widget automatically after init, and optionally, to which parent node.
*
* @attribute render
* @type boolean | Node
* @writeOnce
*/
ATTRS[RENDER] = {
value:FALSE,
writeOnce:TRUE
};
/**
* The css prefix which the static Widget.getClassName method should use when constructing class names
*
* @property Widget.CSS_PREFIX
* @type String
* @default Widget.NAME.toLowerCase()
* @private
* @static
*/
Widget.CSS_PREFIX = _getClassName(Widget.NAME.toLowerCase());
/**
* Generate a standard prefixed classname for the Widget, prefixed by the default prefix defined
* by the <code>Y.config.classNamePrefix</code> attribute used by <code>ClassNameManager</code> and
* <code>Widget.NAME.toLowerCase()</code> (e.g. "yui-widget-xxxxx-yyyyy", based on default values for
* the prefix and widget class name).
* <p>
* The instance based version of this method can be used to generate standard prefixed classnames,
* based on the instances NAME, as opposed to Widget.NAME. This method should be used when you
* need to use a constant class name across different types instances.
* </p>
* @method getClassName
* @param {String*} args* 0..n strings which should be concatenated, using the default separator defined by ClassNameManager, to create the class name
*/
Widget.getClassName = function() {
// arguments needs to be array'fied to concat
return _getClassName.apply(ClassNameManager, [Widget.CSS_PREFIX].concat(Y.Array(arguments), true));
};
_getWidgetClassName = Widget.getClassName;
/**
* Returns the widget instance whose bounding box contains, or is, the given node.
* <p>
* In the case of nested widgets, the nearest bounding box ancestor is used to
* return the widget instance.
* </p>
* @method Widget.getByNode
* @static
* @param node {Node | String} The node for which to return a Widget instance. If a selector
* string is passed in, which selects more than one node, the first node found is used.
* @return {Widget} Widget instance, or null if not found.
*/
Widget.getByNode = function(node) {
var widget,
widgetMarker = _getWidgetClassName();
node = Node.one(node);
if (node) {
node = node.ancestor("." + widgetMarker, true);
if (node) {
widget = _instances[Y.stamp(node, TRUE)];
}
}
return widget || null;
};
Y.extend(Widget, Y.Base, {
/**
* Returns a class name prefixed with the the value of the
* <code>YUI.config.classNamePrefix</code> attribute + the instances <code>NAME</code> property.
* Uses <code>YUI.config.classNameDelimiter</code> attribute to delimit the provided strings.
* e.g.
* <code>
* <pre>
* // returns "yui-slider-foo-bar", for a slider instance
* var scn = slider.getClassName('foo','bar');
*
* // returns "yui-overlay-foo-bar", for an overlay instance
* var ocn = overlay.getClassName('foo','bar');
* </pre>
* </code>
*
* @method getClassName
* @param {String}+ One or more classname bits to be joined and prefixed
*/
getClassName: function () {
return _getClassName.apply(ClassNameManager, [this._cssPrefix].concat(Y.Array(arguments), true));
},
/**
* Returns the name of the skin that's currently applied to the widget.
* This is only really useful after the widget's DOM structure is in the
* document, either by render or by progressive enhancement. Searches up
* the Widget's ancestor axis for a class yui3-skin-(name), and returns the
* (name) portion. Otherwise, returns null.
*
* @method getSkinName
* @return {String} the name of the skin, or null (yui3-skin-sam => sam)
*/
getSkinName: function () {
var root = this.get( CONTENT_BOX ) || this.get( BOUNDING_BOX ),
search = new RegExp( '\\b' + _getClassName( 'skin' ) + '-(\\S+)' ),
match;
if ( root ) {
root.ancestor( function ( node ) {
match = node.get( 'className' ).match( search );
return match;
} );
}
return ( match ) ? match[1] : null;
},
/**
* Initializer lifecycle implementation for the Widget class. Registers the
* widget instance, and runs through the Widget's HTML_PARSER definition.
*
* @method initializer
* @protected
* @param config {Object} Configuration object literal for the widget
*/
initializer: function(config) {
Y.log('initializer called', 'life', 'widget');
_instances[Y.stamp(this.get(BOUNDING_BOX))] = this;
/**
* Notification event, which widget implementations can fire, when
* they change the content of the widget. This event has no default
* behavior and cannot be prevented, so the "on" or "after"
* moments are effectively equivalent (with on listeners being invoked before
* after listeners).
*
* @event widget:contentUpdate
* @preventable false
* @param {EventFacade} e The Event Facade
*/
this.publish(ContentUpdate, { preventable:FALSE });
if (this._applyParser) {
this._applyParser(config);
}
},
/**
* Destructor lifecycle implementation for the Widget class. Purges events attached
* to the bounding box (and all child nodes) and removes the Widget from the
* list of registered widgets.
*
* @method destructor
* @protected
*/
destructor: function() {
Y.log('destructor called', 'life', 'widget');
var boundingBox = this.get(BOUNDING_BOX),
bbGuid = Y.stamp(boundingBox, TRUE),
widgetGuid = Y.stamp(this, TRUE);
if (bbGuid in _instances) {
delete _instances[bbGuid];
}
Y.each(_delegates, function (info) {
if (info.instances[widgetGuid]) {
// Unregister this Widget instance as needing this delegated
// event listener.
delete info.instances[widgetGuid];
// There are no more Widget instances using this delegated
// event listener, so detach it.
if (Y.Object.size(info.instances) === 0) {
info.handle.detach();
}
}
});
this._unbindUI(boundingBox);
boundingBox.remove(TRUE);
},
/**
* Establishes the initial DOM for the widget. Invoking this
* method will lead to the creating of all DOM elements for
* the widget (or the manipulation of existing DOM elements
* for the progressive enhancement use case).
* <p>
* This method should only be invoked once for an initialized
* widget.
* </p>
* <p>
* It delegates to the widget specific renderer method to do
* the actual work.
* </p>
*
* @method render
* @chainable
* @final
* @param parentNode {Object | String} Optional. The Node under which the
* Widget is to be rendered. This can be a Node instance or a CSS selector string.
* <p>
* If the selector string returns more than one Node, the first node will be used
* as the parentNode. NOTE: This argument is required if both the boundingBox and contentBox
* are not currently in the document. If it's not provided, the Widget will be rendered
* to the body of the current document in this case.
* </p>
*/
render: function(parentNode) {
if (this.get(DESTROYED)) { Y.log("Render failed; widget has been destroyed", "error", "widget"); }
if (!this.get(DESTROYED) && !this.get(RENDERED)) {
/**
* Lifcyle event for the render phase, fired prior to rendering the UI
* for the widget (prior to invoking the widget's renderer method).
* <p>
* Subscribers to the "on" moment of this event, will be notified
* before the widget is rendered.
* </p>
* <p>
* Subscribers to the "after" moment of this event, will be notified
* after rendering is complete.
* </p>
*
* @event widget:render
* @preventable _defRenderFn
* @param {EventFacade} e The Event Facade
*/
this.publish(RENDER, {
queuable:FALSE,
fireOnce:TRUE,
defaultTargetOnly:TRUE,
defaultFn: this._defRenderFn
});
this.fire(RENDER, {parentNode: (parentNode) ? Node.one(parentNode) : null});
}
return this;
},
/**
* Default render handler
*
* @method _defRenderFn
* @protected
* @param {EventFacade} e The Event object
* @param {Node} parentNode The parent node to render to, if passed in to the <code>render</code> method
*/
_defRenderFn : function(e) {
this._renderUI(e.parentNode);
this._bindUI();
this._syncUI();
this.renderer();
this._set(RENDERED, TRUE);
this._removeLoadingClassNames();
},
/**
* Creates DOM (or manipulates DOM for progressive enhancement)
* This method is invoked by render() and is not chained
* automatically for the class hierarchy (unlike initializer, destructor)
* so it should be chained manually for subclasses if required.
*
* @method renderer
* @protected
*/
renderer: function() {
this.renderUI();
this.bindUI();
this.syncUI();
},
/**
* Configures/Sets up listeners to bind Widget State to UI/DOM
*
* This method is not called by framework and is not chained
* automatically for the class hierarchy.
*
* @method bindUI
* @protected
*/
bindUI: EMPTY_FN,
/**
* Adds nodes to the DOM
*
* This method is not called by framework and is not chained
* automatically for the class hierarchy.
*
* @method renderUI
* @protected
*/
renderUI: EMPTY_FN,
/**
* Refreshes the rendered UI, based on Widget State
*
* This method is not called by framework and is not chained
* automatically for the class hierarchy.
*
* @method syncUI
* @protected
*
*/
syncUI: EMPTY_FN,
/**
* @method hide
* @description Hides the Widget by setting the "visible" attribute to "false".
* @chainable
*/
hide: function() {
return this.set(VISIBLE, FALSE);
},
/**
* @method show
* @description Shows the Widget by setting the "visible" attribute to "true".
* @chainable
*/
show: function() {
return this.set(VISIBLE, TRUE);
},
/**
* @method focus
* @description Causes the Widget to receive the focus by setting the "focused"
* attribute to "true".
* @chainable
*/
focus: function () {
return this._set(FOCUSED, TRUE);
},
/**
* @method blur
* @description Causes the Widget to lose focus by setting the "focused" attribute
* to "false"
* @chainable
*/
blur: function () {
return this._set(FOCUSED, FALSE);
},
/**
* @method enable
* @description Set the Widget's "disabled" attribute to "false".
* @chainable
*/
enable: function() {
return this.set(DISABLED, FALSE);
},
/**
* @method disable
* @description Set the Widget's "disabled" attribute to "true".
* @chainable
*/
disable: function() {
return this.set(DISABLED, TRUE);
},
/**
* @method _uiSizeCB
* @protected
* @param {boolean} expand
*/
_uiSizeCB : function(expand) {
var bb = this.get(BOUNDING_BOX),
cb = this.get(CONTENT_BOX),
bbTempExpanding = _getWidgetClassName("tmp", "forcesize"),
borderBoxSupported = this._bbs,
heightReallyMinHeight = IE && IE < 7;
if (borderBoxSupported) {
cb.toggleClass(_getWidgetClassName(CONTENT, "expanded"), expand);
} else {
if (expand) {
if (heightReallyMinHeight) {
bb.addClass(bbTempExpanding);
}
cb.set(OFFSET_HEIGHT, bb.get(OFFSET_HEIGHT));
if (heightReallyMinHeight) {
bb.removeClass(bbTempExpanding);
}
} else {
cb.setStyle(HEIGHT, EMPTY_STR);
}
}
},
/**
* Helper method to collect the boundingBox and contentBox, set styles and append to the provided parentNode, if not
* already a child. The owner document of the boundingBox, or the owner document of the contentBox will be used
* as the document into which the Widget is rendered if a parentNode is node is not provided. If both the boundingBox and
* the contentBox are not currently in the document, and no parentNode is provided, the widget will be rendered
* to the current document's body.
*
* @method _renderBox
* @private
* @param {Node} parentNode The parentNode to render the widget to. If not provided, and both the boundingBox and
* the contentBox are not currently in the document, the widget will be rendered to the current document's body.
*/
_renderBox: function(parentNode) {
// TODO: Performance Optimization [ More effective algo to reduce Node refs, compares, replaces? ]
var contentBox = this.get(CONTENT_BOX),
boundingBox = this.get(BOUNDING_BOX),
srcNode = this.get(SRC_NODE),
defParentNode = this.DEF_PARENT_NODE,
doc = (srcNode && srcNode.get(OWNER_DOCUMENT)) || boundingBox.get(OWNER_DOCUMENT) || contentBox.get(OWNER_DOCUMENT);
// If srcNode (assume it's always in doc), have contentBox take its place (widget render responsible for re-use of srcNode contents)
if (srcNode && !srcNode.compareTo(contentBox) && !contentBox.inDoc(doc)) {
srcNode.replace(contentBox);
}
if (!boundingBox.compareTo(contentBox.get(PARENT_NODE)) && !boundingBox.compareTo(contentBox)) {
// If contentBox box is already in the document, have boundingBox box take it's place
if (contentBox.inDoc(doc)) {
contentBox.replace(boundingBox);
}
boundingBox.appendChild(contentBox);
}
parentNode = parentNode || (defParentNode && Node.one(defParentNode));
if (parentNode) {
parentNode.appendChild(boundingBox);
} else if (!boundingBox.inDoc(doc)) {
Node.one(BODY).insert(boundingBox, 0);
}
this._bbs = !(IE && IE < 8 && doc.compatMode != "BackCompat");
},
/**
* Setter for the boundingBox attribute
*
* @method _setBB
* @private
* @param Node/String
* @return Node
*/
_setBB: function(node) {
return this._setBox(this.get(ID), node, this.BOUNDING_TEMPLATE);
},
/**
* Setter for the contentBox attribute
*
* @method _setCB
* @private
* @param {Node|String} node
* @return Node
*/
_setCB: function(node) {
return (this.CONTENT_TEMPLATE === null) ? this.get(BOUNDING_BOX) : this._setBox(null, node, this.CONTENT_TEMPLATE);
},
_defaultCB : function(node) {
return this.get(SRC_NODE) || null;
},
/**
* Helper method to set the bounding/content box, or create it from
* the provided template if not found.
*
* @method _setBox
* @private
*
* @param {String} id The node's id attribute
* @param {Node|String} node The node reference
* @param {String} template HTML string template for the node
* @return {Node} The node
*/
_setBox : function(id, node, template) {
node = Node.one(node) || Node.create(template);
if (!node.get(ID)) {
node.set(ID, id || Y.guid());
}
return node;
},
/**
* Initializes the UI state for the Widget's bounding/content boxes.
*
* @method _renderUI
* @protected
* @param {Node} The parent node to rendering the widget into
*/
_renderUI: function(parentNode) {
this._renderBoxClassNames();
this._renderBox(parentNode);
},
/**
* Applies standard class names to the boundingBox and contentBox
*
* @method _renderBoxClassNames
* @protected
*/
_renderBoxClassNames : function() {
var classes = this._getClasses(),
cl,
boundingBox = this.get(BOUNDING_BOX),
i;
boundingBox.addClass(_getWidgetClassName());
// Start from Widget Sub Class
for (i = classes.length-3; i >= 0; i--) {
cl = classes[i];
boundingBox.addClass(cl.CSS_PREFIX || _getClassName(cl.NAME.toLowerCase()));
}
// Use instance based name for content box
this.get(CONTENT_BOX).addClass(this.getClassName(CONTENT));
},
/**
* Removes class names representative of the widget's loading state from
* the boundingBox.
*
* @method _removeLoadingClassNames
* @protected
*/
_removeLoadingClassNames: function () {
var boundingBox = this.get(BOUNDING_BOX),
contentBox = this.get(CONTENT_BOX);
boundingBox.removeClass(_getWidgetClassName(LOADING));
boundingBox.removeClass(this.getClassName(LOADING));
contentBox.removeClass(_getWidgetClassName(LOADING));
contentBox.removeClass(this.getClassName(LOADING));
},
/**
* Sets up DOM and CustomEvent listeners for the widget.
*
* @method _bindUI
* @protected
*/
_bindUI: function() {
this._bindAttrUI(this._BIND_UI_ATTRS);
this._bindDOM();
},
/**
* @method _unbindUI
* @protected
*/
_unbindUI : function(boundingBox) {
this._unbindAttrUI(this._BIND_UI_ATTRS);
this._unbindDOM(boundingBox);
},
/**
* Sets up DOM listeners, on elements rendered by the widget.
*
* @method _bindDOM
* @protected
*/
_bindDOM : function() {
var oDocument = this.get(BOUNDING_BOX).get(OWNER_DOCUMENT);
// TODO: Perf Optimization: Use Widget.getByNode delegation, to get by
// with just one _onDocFocus subscription per sandbox, instead of one per widget
this._hDocFocus = oDocument.on("focus", this._onDocFocus, this);
// Fix for Webkit:
// Document doesn't receive focus in Webkit when the user mouses
// down on it, so the "focused" attribute won't get set to the
// correct value.
if (WEBKIT) {
this._hDocMouseDown = oDocument.on("mousedown", this._onDocMouseDown, this);
}
},
/**
* @method _unbindDOM
* @protected
*/
_unbindDOM : function(boundingBox) {
this._hDocFocus.detach();
if (WEBKIT) {
this._hDocMouseDown.detach();
}
},
/**
* Updates the widget UI to reflect the attribute state.
*
* @method _syncUI
* @protected
*/
_syncUI: function() {
this._syncAttrUI(this._SYNC_UI_ATTRS);
},
/**
* Sets the height on the widget's bounding box element
*
* @method _uiSetHeight
* @protected
* @param {String | Number} val
*/
_uiSetHeight: function(val) {
this._uiSetDim(HEIGHT, val);
this._uiSizeCB((val !== EMPTY_STR && val !== AUTO));
},
/**
* Sets the width on the widget's bounding box element
*
* @method _uiSetWidth
* @protected
* @param {String | Number} val
*/
_uiSetWidth: function(val) {
this._uiSetDim(WIDTH, val);
},
/**
* @method _uiSetDim
* @private
* @param {String} dim The dimension - "width" or "height"
* @param {Number | String} val The value to set
*/
_uiSetDim: function(dimension, val) {
this.get(BOUNDING_BOX).setStyle(dimension, L.isNumber(val) ? val + this.DEF_UNIT : val);
},
/**
* Sets the visible state for the UI
*
* @method _uiSetVisible
* @protected
* @param {boolean} val
*/
_uiSetVisible: function(val) {
this.get(BOUNDING_BOX).toggleClass(this.getClassName(HIDDEN), !val);
},
/**
* Sets the disabled state for the UI
*
* @protected
* @param {boolean} val
*/
_uiSetDisabled: function(val) {
this.get(BOUNDING_BOX).toggleClass(this.getClassName(DISABLED), val);
},
/**
* Sets the focused state for the UI
*
* @protected
* @param {boolean} val
* @param {string} src String representing the source that triggered an update to
* the UI.
*/
_uiSetFocused: function(val, src) {
var boundingBox = this.get(BOUNDING_BOX);
boundingBox.toggleClass(this.getClassName(FOCUSED), val);
if (src !== UI) {
if (val) {
boundingBox.focus();
} else {
boundingBox.blur();
}
}
},
/**
* Set the tabIndex on the widget's rendered UI
*
* @method _uiSetTabIndex
* @protected
* @param Number
*/
_uiSetTabIndex: function(index) {
var boundingBox = this.get(BOUNDING_BOX);
if (L.isNumber(index)) {
boundingBox.set(TAB_INDEX, index);
} else {
boundingBox.removeAttribute(TAB_INDEX);
}
},
/**
* @method _onDocMouseDown
* @description "mousedown" event handler for the owner document of the
* widget's bounding box.
* @protected
* @param {EventFacade} evt The event facade for the DOM focus event
*/
_onDocMouseDown: function (evt) {
if (this._hasDOMFocus) {
this._onDocFocus(evt);
}
},
/**
* DOM focus event handler, used to sync the state of the Widget with the DOM
*
* @method _onDocFocus
* @protected
* @param {EventFacade} evt The event facade for the DOM focus event
*/
_onDocFocus: function (evt) {
var bFocused = this.get(BOUNDING_BOX).contains(evt.target); // contains() checks invoking node also
this._hasDOMFocus = bFocused;
this._set(FOCUSED, bFocused, { src: UI });
},
/**
* Generic toString implementation for all widgets.
*
* @method toString
* @return {String} The default string value for the widget [ displays the NAME of the instance, and the unique id ]
*/
toString: function() {
return this.constructor.NAME + "[" + this.get(ID) + "]";
},
/**
* Default unit to use for dimension values
*
* @property DEF_UNIT
* @type String
*/
DEF_UNIT : "px",
/**
* Default node to render the bounding box to. If not set,
* will default to the current document body.
*
* @property DEF_PARENT_NODE
* @type String | Node
*/
DEF_PARENT_NODE : null,
/**
* Property defining the markup template for content box. If your Widget doesn't
* need the dual boundingBox/contentBox structure, set CONTENT_TEMPLATE to null,
* and contentBox and boundingBox will both point to the same Node.
*
* @property CONTENT_TEMPLATE
* @type String
*/
CONTENT_TEMPLATE : DIV,
/**
* Property defining the markup template for bounding box.
*
* @property BOUNDING_TEMPLATE
* @type String
*/
BOUNDING_TEMPLATE : DIV,
/**
* @method _guid
* @protected
*/
_guid : function() {
return Y.guid();
},
/**
* @method _validTabIndex
* @protected
* @param {Number} tabIndex
*/
_validTabIndex : function (tabIndex) {
return (L.isNumber(tabIndex) || L.isNull(tabIndex));
},
/**
* @method _bindAttrUI
* @protected
* @param {Object} attrs
*/
_bindAttrUI : function(attrs) {
this._doBindAttrUI(attrs, TRUE);
},
/**
* @method _unbindAttrUI
* @protected
* @param {Object} attrs
*/
_unbindAttrUI : function(attrs) {
this._doBindAttrUI(attrs, FALSE);
},
/**
* @method _syncAttrUI
* @protected
* @param {Object} attrs
*/
_syncAttrUI : function(attrs) {
var i, l = attrs.length, attr;
for (i = 0; i < l; i++) {
attr = attrs[i];
this[_UISET + _toInitialCap(attr)](this.get(attr));
}
},
/**
* @method _doBindAttrUI
* @private
* @param {Array} attrs Array of attribute to bind/unbind
* @param {boolean} bind If true, bind, else unbind
*/
_doBindAttrUI : function(attrs, bind) {
var i,
l = attrs.length,
methodName = (bind) ? "after" : "detach";
for (i = 0; i < l; i++) {
this[methodName](attrs[i] + CHANGE, this._setAttrUI);
}
},
_setAttrUI : function(e) {
this[_UISET + _toInitialCap(e.attrName)](e.newVal, e.src);
},
_strSetter : function(strings) {
return Y.merge(this.get(STRINGS), strings);
},
_defStrValue : function() {
return (Y.Intl && Y.Intl.get) ? Y.Intl.get(moduleName) : {};
},
getString : function(key) {
return this.get(STRINGS)[key];
},
getStrings : function() {
return this.get(STRINGS);
},
_BIND_UI_ATTRS : UI_ATTRS,
_SYNC_UI_ATTRS : UI_ATTRS.concat(TAB_INDEX),
/**
* Map of DOM events that should be fired as Custom Events by the
* Widget instance.
*
* @property UI_EVENTS
* @type Object
*/
UI_EVENTS: Y.Node.DOM_EVENTS,
/**
* Returns the node on which to bind delegate listeners.
*
* @method _getUIEventNode
* @protected
*/
_getUIEventNode: function () {
return this.get(BOUNDING_BOX);
},
/**
* Binds a delegated DOM event listener of the specified type to the
* Widget's outtermost DOM element to facilitate the firing of a Custom
* Event of the same type for the Widget instance.
*
* @private
* @method _createUIEvent
* @param type {String} String representing the name of the event
*/
_createUIEvent: function (type) {
var uiEvtNode = this._getUIEventNode(),
parentNode = uiEvtNode.get(PARENT_NODE),
key = (Y.stamp(parentNode) + type),
info = _delegates[key],
handle;
// For each Node instance: Ensure that there is only one delegated
// event listener used to fire Widget UI events.
if (!info) {
Y.log("Creating delegate for the " + type + " event.", "info", "widget");
handle = parentNode.delegate(type, function (evt) {
var widget = Widget.getByNode(this);
// Make the DOM event a property of the custom event
// so that developers still have access to it.
widget.fire(evt.type, { domEvent: evt });
}, "." + _getWidgetClassName());
_delegates[key] = info = { instances: {}, handle: handle };
}
// Register this Widget as using this Node as a delegation container.
info.instances[Y.stamp(this)] = 1;
},
/**
* Determines if the specified event is a UI event.
*
* @private
* @method _isUIEvent
* @param type {String} String representing the name of the event
* @return {String} Event Returns the name of the UI Event, otherwise
* undefined.
*/
_getUIEvent: function (type) {
if (L.isString(type)) {
var sType = type.replace(UI_EVENT_REGEX, UI_EVENT_REGEX_REPLACE),
returnVal;
if (this.UI_EVENTS[sType]) {
returnVal = sType;
}
return returnVal;
}
},
/**
* Sets up infastructure required to fire a UI event.
*
* @private
* @method _initUIEvent
* @param type {String} String representing the name of the event
* @return {String}
*/
_initUIEvent: function (type) {
var sType = this._getUIEvent(type),
queue = this._uiEvtsInitQueue || {};
if (sType && !queue[sType]) {
Y.log("Deferring creation of " + type + " delegate until render.", "info", "widget");
this.after(RENDER, function() {
this._createUIEvent(sType);
delete this._uiEvtsInitQueue[sType];
});
this._uiEvtsInitQueue = queue[sType] = 1;
}
},
// Override of "on" from Base to facilitate the firing of Widget events
// based on DOM events of the same name/type (e.g. "click", "mouseover").
// Temporary solution until we have the ability to listen to when
// someone adds an event listener (bug 2528230)
on: function (type) {
this._initUIEvent(type);
return Widget.superclass.on.apply(this, arguments);
},
// Override of "after" from Base to facilitate the firing of Widget events
// based on DOM events of the same name/type (e.g. "click", "mouseover").
// Temporary solution until we have the ability to listen to when
// someone adds an event listener (bug 2528230)
after: function (type) {
this._initUIEvent(type);
return Widget.superclass.after.apply(this, arguments);
},
// Override of "publish" from Base to facilitate the firing of Widget events
// based on DOM events of the same name/type (e.g. "click", "mouseover").
// Temporary solution until we have the ability to listen to when
// someone publishes an event (bug 2528230)
publish: function (type, config) {
var sType = this._getUIEvent(type);
if (sType && config && config.defaultFn) {
this._initUIEvent(sType);
}
return Widget.superclass.publish.apply(this, arguments);
}
});
Y.Widget = Widget;
}, '@VERSION@' ,{requires:['attribute', 'event-focus', 'base', 'node', 'classnamemanager', 'intl']});