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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> |
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<html> |
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<head> |
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<meta http-equiv="content-type" content="text/html; charset=utf-8"> |
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<title>Creating a simple Tooltip widget</title> |
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<style type="text/css"> |
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/*margin and padding on body element |
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can introduce errors in determining |
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element position and are not recommended; |
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we turn them off as a foundation for YUI |
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CSS treatments. */ |
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body { |
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margin:0; |
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padding:0; |
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} |
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</style> |
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<link type="text/css" rel="stylesheet" href="../../build/cssfonts/fonts-min.css" /> |
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<script type="text/javascript" src="../../build/yui/yui-min.js"></script> |
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<!--begin custom header content for this example--> |
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<style type="text/css"> |
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.yui-tooltip { |
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position:absolute; |
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} |
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.yui-tooltip-content { |
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color: #000; |
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padding: 2px 5px; |
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border-color: #D4C237 #A6982B #A6982B #A6982B; |
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border-width: 1px; |
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border-style: solid; |
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background-color: #FFEE69; |
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} |
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.yui-tooltip-hidden { |
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visibility:hidden; |
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} |
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div.yui-hastooltip { |
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border:1px solid #243356; |
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background-color:#406ED9; |
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color:#ffffff; |
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width:25em; |
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margin:20px 0px; |
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padding:5px; |
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cursor:default; |
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} |
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div.yui-hastooltip span { |
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font-style:italic; |
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font-weight:bold; |
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color:#ABCEFF; |
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} |
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.yui-tooltip-content strong { |
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font-weight:bold; |
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} |
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</style> |
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<!--end custom header content for this example--> |
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</head> |
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<body class=" yui-skin-sam"> |
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<h1>Creating a simple Tooltip widget</h1> |
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<div class="exampleIntro"> |
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This is an advanced example, in which we create a Tooltip widget, by extending the base <code>Widget</code> class, and adding <code>WidgetStack</code> and <code>WidgetPosition</code> extensions, through <code>Base.build</code>. |
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</div> |
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<!--BEGIN SOURCE CODE FOR EXAMPLE =============================== --> |
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<div id="delegate"> |
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<div class="yui-hastooltip" title="Tooltip 1" id="tt1">Tooltip One <span>(content from title)</span></div> |
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<div class="yui-hastooltip" title="Tooltip 2" id="tt2">Tooltip Two <span>(content set in event listener)</span></div> |
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<div class="yui-hastooltip" title="Tooltip 3" id="tt3">Tooltip Three <span>(content from lookup)</span></div> |
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<div class="yui-hastooltip" title="Tooltip 4" id="tt4">Tooltip Four <span>(content from title)</span></div> |
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<label><input type="checkbox" id="prevent" /> Prevent Tooltip Four</label> |
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</div> |
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<script type="text/javascript"> |
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YUI({base:"../../build/", timeout: 10000}).use("widget", "widget-position", "widget-stack", function(Y) { |
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var Lang = Y.Lang, |
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Node = Y.Node; |
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/* Tooltip constructor */ |
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function Tooltip(config) { |
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Tooltip.superclass.constructor.apply(this, arguments); |
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} |
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/* |
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Required NAME static field, used to identify the Widget class and |
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used as an event prefix, to generate class names etc. (set to the |
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class name in camel case). |
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*/ |
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Tooltip.NAME = "tooltip"; |
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/* Static constants */ |
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Tooltip.OFFSET_X = 15; |
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Tooltip.OFFSET_Y = 15; |
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Tooltip.OFFSCREEN_X = -10000; |
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Tooltip.OFFSCREEN_Y = -10000; |
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/* Default Tooltip Attributes */ |
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Tooltip.ATTRS = { |
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/* |
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* The tooltip content. This can either be a fixed content value, |
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* or a map of id-to-values, designed to be used when a single |
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* tooltip is mapped to multiple trigger elements. |
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*/ |
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content : { |
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value: null |
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}, |
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/* |
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* The set of nodes to bind to the tooltip instance. Can be a string, |
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* or a node instance. |
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*/ |
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triggerNodes : { |
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value: null, |
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setter: function(val) { |
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if (val && Lang.isString(val)) { |
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val = Node.all(val); |
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} |
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return val; |
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} |
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}, |
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/* |
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* The delegate node to which event listeners should be attached. |
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* This node should be an ancestor of all trigger nodes bound |
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* to the instance. By default the document is used. |
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*/ |
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delegate : { |
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value: null, |
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setter: function(val) { |
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return Y.one(val) || Y.one("document"); |
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} |
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}, |
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/* |
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* The time to wait, after the mouse enters the trigger node, |
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* to display the tooltip |
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*/ |
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showDelay : { |
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value:250 |
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}, |
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/* |
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* The time to wait, after the mouse leaves the trigger node, |
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* to hide the tooltip |
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*/ |
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hideDelay : { |
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value:10 |
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}, |
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/* |
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* The time to wait, after the tooltip is first displayed for |
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* a trigger node, to hide it, if the mouse has not left the |
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* trigger node |
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*/ |
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autoHideDelay : { |
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value:2000 |
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}, |
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/* |
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* Override the default visibility set by the widget base class |
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*/ |
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visible : { |
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value:false |
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}, |
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/* |
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* Override the default XY value set by the widget base class, |
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* to position the tooltip offscreen |
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*/ |
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xy: { |
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value:[Tooltip.OFFSCREEN_X, Tooltip.OFFSCREEN_Y] |
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} |
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}; |
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/* Extend the base Widget class */ |
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Y.extend(Tooltip, Y.Widget, { |
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/* |
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* Initialization Code: Sets up privately used state |
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* properties, and publishes the events Tooltip introduces |
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*/ |
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initializer : function(config) { |
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this._triggerClassName = this.getClassName("trigger"); |
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// Currently bound trigger node information |
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this._currTrigger = { |
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node: null, |
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title: null, |
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mouseX: Tooltip.OFFSCREEN_X, |
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mouseY: Tooltip.OFFSCREEN_Y |
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}; |
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// Event handles - mouse over is set on the delegate |
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// element, mousemove and mouseout are set on the trigger node |
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this._eventHandles = { |
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delegate: null, |
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trigger: { |
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mouseMove : null, |
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mouseOut: null |
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} |
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}; |
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// Show/hide timers |
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this._timers = { |
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show: null, |
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hide: null |
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}; |
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// Publish events introduced by Tooltip. Note the triggerEnter event is preventable, |
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// with the default behavior defined in the _defTriggerEnterFn method |
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this.publish("triggerEnter", {defaultFn: this._defTriggerEnterFn, preventable:true}); |
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this.publish("triggerLeave", {preventable:false}); |
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}, |
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/* |
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* Destruction Code: Clears event handles, timers, |
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* and current trigger information |
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*/ |
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destructor : function() { |
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this._clearCurrentTrigger(); |
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this._clearTimers(); |
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this._clearHandles(); |
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}, |
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/* |
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* bindUI is used to bind attribute change and dom event |
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* listeners |
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*/ |
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bindUI : function() { |
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this.after("delegateChange", this._afterSetDelegate); |
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this.after("nodesChange", this._afterSetNodes); |
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this._bindDelegate(); |
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}, |
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/* |
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* syncUI is used to update the rendered DOM, based on the current |
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* Tooltip state |
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*/ |
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syncUI : function() { |
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this._uiSetNodes(this.get("triggerNodes")); |
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}, |
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/* |
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* Public method, which can be used by triggerEvent event listeners |
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* to set the content of the tooltip for the current trigger node |
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*/ |
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setTriggerContent : function(content) { |
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var contentBox = this.get("contentBox"); |
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contentBox.set("innerHTML", ""); |
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if (content) { |
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if (content instanceof Node) { |
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for (var i = 0, l = content.size(); i < l; ++i) { |
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contentBox.appendChild(content.item(i)); |
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} |
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} else if (Lang.isString(content)) { |
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contentBox.set("innerHTML", content); |
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} |
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} |
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}, |
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/* |
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* Gets the closest ancestor of the given node, |
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* which is a tooltip trigger node |
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*/ |
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getParentTrigger : function(node) { |
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var cn = this._triggerClassName; |
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return (node.hasClass(cn)) ? node : node.ancestor(function(node) {return node.hasClass(cn)}); |
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}, |
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/* |
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* Default attribute change listener for |
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* the triggerNodes attribute |
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*/ |
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_afterSetNodes : function(e) { |
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this._uiSetNodes(e.newVal); |
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}, |
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/* |
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* Default attribute change listener for |
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* the delegate attribute |
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*/ |
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_afterSetDelegate : function(e) { |
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this._bindDelegate(e.newVal); |
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}, |
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/* |
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* Updates the rendered DOM to reflect the |
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* set of trigger nodes passed in |
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*/ |
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_uiSetNodes : function(nodes) { |
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if (this._triggerNodes) { |
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this._triggerNodes.removeClass(this._triggerClassName); |
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} |
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if (nodes) { |
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this._triggerNodes = nodes; |
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this._triggerNodes.addClass(this._triggerClassName); |
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} |
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}, |
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/* |
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* Attaches the default mouseover DOM listener to the |
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* current delegate node |
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*/ |
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_bindDelegate : function() { |
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var eventHandles = this._eventHandles; |
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if (eventHandles.delegate) { |
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eventHandles.delegate.detach(); |
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eventHandles.delegate = null; |
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} |
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eventHandles.delegate = Y.on("mouseover", Y.bind(this._onDelegateMouseOver, this), this.get("delegate")); |
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}, |
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/* |
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* Default mouse over DOM event listener. |
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* |
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* Delegates to the _enterTrigger method, |
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* if the mouseover enters a trigger node. |
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*/ |
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_onDelegateMouseOver : function(e) { |
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var node = this.getParentTrigger(e.target); |
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if (node && (!this._currTrigger.node || !node.compareTo(this._currTrigger.node))) { |
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this._enterTrigger(node, e.pageX, e.pageY); |
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} |
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}, |
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/* |
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* Default mouse out DOM event listener |
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* |
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* Delegates to _leaveTrigger if the mouseout |
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* leaves the current trigger node |
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*/ |
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_onNodeMouseOut : function(e) { |
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var to = e.relatedTarget; |
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var trigger = e.currentTarget; |
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if (!trigger.contains(to)) { |
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this._leaveTrigger(trigger); |
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} |
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}, |
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/* |
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* Default mouse move DOM event listener |
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*/ |
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_onNodeMouseMove : function(e) { |
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this._overTrigger(e.pageX, e.pageY); |
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}, |
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/* |
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* Default handler invoked when the mouse enters |
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* a trigger node. Fires the triggerEnter |
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* event which can be prevented by listeners to |
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* show the tooltip from being displayed. |
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*/ |
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_enterTrigger : function(node, x, y) { |
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this._setCurrentTrigger(node, x, y); |
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this.fire("triggerEnter", {node:node, pageX:x, pageY:y}); |
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}, |
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/* |
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* Default handler for the triggerEvent event, |
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* which will setup the timer to display the tooltip, |
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* if the default handler has not been prevented. |
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*/ |
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_defTriggerEnterFn : function(e) { |
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var node = e.node; |
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if (!this.get("disabled")) { |
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this._clearTimers(); |
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var delay = (this.get("visible")) ? 0 : this.get("showDelay"); |
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this._timers.show = Y.later(delay, this, this._showTooltip, [node]); |
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} |
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}, |
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/* |
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* Default handler invoked when the mouse leaves |
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* the current trigger node. Fires the triggerLeave |
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* event and sets up the hide timer |
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*/ |
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_leaveTrigger : function(node) { |
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this.fire("triggerLeave"); |
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this._clearCurrentTrigger(); |
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this._clearTimers(); |
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this._timers.hide = Y.later(this.get("hideDelay"), this, this._hideTooltip); |
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}, |
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/* |
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* Default handler invoked for mousemove events |
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* on the trigger node. Stores the current mouse |
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* x, y positions |
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*/ |
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_overTrigger : function(x, y) { |
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this._currTrigger.mouseX = x; |
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this._currTrigger.mouseY = y; |
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}, |
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/* |
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* Shows the tooltip, after moving it to the current mouse |
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* position. |
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*/ |
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_showTooltip : function(node) { |
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var x = this._currTrigger.mouseX; |
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var y = this._currTrigger.mouseY; |
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422 |
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423 |
this.move(x + Tooltip.OFFSET_X, y + Tooltip.OFFSET_Y); |
|
|
424 |
|
|
|
425 |
this.show(); |
|
|
426 |
this._clearTimers(); |
|
|
427 |
|
|
|
428 |
this._timers.hide = Y.later(this.get("autoHideDelay"), this, this._hideTooltip); |
|
|
429 |
}, |
|
|
430 |
|
|
|
431 |
/* |
|
|
432 |
* Hides the tooltip, after clearing existing timers. |
|
|
433 |
*/ |
|
|
434 |
_hideTooltip : function() { |
|
|
435 |
this._clearTimers(); |
|
|
436 |
this.hide(); |
|
|
437 |
}, |
|
|
438 |
|
|
|
439 |
/* |
|
|
440 |
* Set the rendered content of the tooltip for the current |
|
|
441 |
* trigger, based on (in order of precedence): |
|
|
442 |
* |
|
|
443 |
* a). The string/node content attribute value |
|
|
444 |
* b). From the content lookup map if it is set, or |
|
|
445 |
* c). From the title attribute if set. |
|
|
446 |
*/ |
|
|
447 |
_setTriggerContent : function(node) { |
|
|
448 |
var content = this.get("content"); |
|
|
449 |
if (content && !(content instanceof Node || Lang.isString(content))) { |
|
|
450 |
content = content[node.get("id")] || node.getAttribute("title"); |
|
|
451 |
} |
|
|
452 |
this.setTriggerContent(content); |
|
|
453 |
}, |
|
|
454 |
|
|
|
455 |
/* |
|
|
456 |
* Set the currently bound trigger node information, clearing |
|
|
457 |
* out the title attribute if set and setting up mousemove/out |
|
|
458 |
* listeners. |
|
|
459 |
*/ |
|
|
460 |
_setCurrentTrigger : function(node, x, y) { |
|
|
461 |
|
|
|
462 |
var currTrigger = this._currTrigger, |
|
|
463 |
triggerHandles = this._eventHandles.trigger; |
|
|
464 |
|
|
|
465 |
this._setTriggerContent(node); |
|
|
466 |
|
|
|
467 |
triggerHandles.mouseMove = Y.on("mousemove", Y.bind(this._onNodeMouseMove, this), node); |
|
|
468 |
triggerHandles.mouseOut = Y.on("mouseout", Y.bind(this._onNodeMouseOut, this), node); |
|
|
469 |
|
|
|
470 |
var title = node.getAttribute("title"); |
|
|
471 |
node.setAttribute("title", ""); |
|
|
472 |
|
|
|
473 |
currTrigger.mouseX = x; |
|
|
474 |
currTrigger.mouseY = y; |
|
|
475 |
currTrigger.node = node; |
|
|
476 |
currTrigger.title = title; |
|
|
477 |
}, |
|
|
478 |
|
|
|
479 |
/* |
|
|
480 |
* Clear out the current trigger state, restoring |
|
|
481 |
* the title attribute on the trigger node, |
|
|
482 |
* if it was originally set. |
|
|
483 |
*/ |
|
|
484 |
_clearCurrentTrigger : function() { |
|
|
485 |
|
|
|
486 |
var currTrigger = this._currTrigger, |
|
|
487 |
triggerHandles = this._eventHandles.trigger; |
|
|
488 |
|
|
|
489 |
if (currTrigger.node) { |
|
|
490 |
var node = currTrigger.node; |
|
|
491 |
var title = currTrigger.title || ""; |
|
|
492 |
|
|
|
493 |
currTrigger.node = null; |
|
|
494 |
currTrigger.title = ""; |
|
|
495 |
|
|
|
496 |
triggerHandles.mouseMove.detach(); |
|
|
497 |
triggerHandles.mouseOut.detach(); |
|
|
498 |
triggerHandles.mouseMove = null; |
|
|
499 |
triggerHandles.mouseOut = null; |
|
|
500 |
|
|
|
501 |
node.setAttribute("title", title); |
|
|
502 |
} |
|
|
503 |
}, |
|
|
504 |
|
|
|
505 |
/* |
|
|
506 |
* Cancel any existing show/hide timers |
|
|
507 |
*/ |
|
|
508 |
_clearTimers : function() { |
|
|
509 |
var timers = this._timers; |
|
|
510 |
if (timers.hide) { |
|
|
511 |
timers.hide.cancel(); |
|
|
512 |
timers.hide = null; |
|
|
513 |
} |
|
|
514 |
if (timers.show) { |
|
|
515 |
timers.show.cancel(); |
|
|
516 |
timers.show = null; |
|
|
517 |
} |
|
|
518 |
}, |
|
|
519 |
|
|
|
520 |
/* |
|
|
521 |
* Detach any stored event handles |
|
|
522 |
*/ |
|
|
523 |
_clearHandles : function() { |
|
|
524 |
var eventHandles = this._eventHandles; |
|
|
525 |
|
|
|
526 |
if (eventHandles.delegate) { |
|
|
527 |
this._eventHandles.delegate.detach(); |
|
|
528 |
} |
|
|
529 |
if (eventHandles.trigger.mouseOut) { |
|
|
530 |
eventHandles.trigger.mouseOut.detach(); |
|
|
531 |
} |
|
|
532 |
if (eventHandles.trigger.mouseMove) { |
|
|
533 |
eventHandles.trigger.mouseMove.detach(); |
|
|
534 |
} |
|
|
535 |
} |
|
|
536 |
}); |
|
|
537 |
|
|
|
538 |
// dynamic:false = Modify the existing Tooltip class |
|
|
539 |
Tooltip = Y.Base.build(Tooltip.NAME, Tooltip, [Y.WidgetPosition, Y.WidgetStack], {dynamic:false}); |
|
|
540 |
|
|
|
541 |
var tt = new Tooltip({ |
|
|
542 |
triggerNodes:".yui-hastooltip", |
|
|
543 |
delegate: "#delegate", |
|
|
544 |
content: { |
|
|
545 |
tt3: "Tooltip 3 (from lookup)" |
|
|
546 |
}, |
|
|
547 |
shim:false, |
|
|
548 |
zIndex:2 |
|
|
549 |
}); |
|
|
550 |
tt.render(); |
|
|
551 |
|
|
|
552 |
tt.on("triggerEnter", function(e) { |
|
|
553 |
var node = e.node; |
|
|
554 |
if (node && node.get("id") == "tt2") { |
|
|
555 |
this.setTriggerContent("Tooltip 2 (from triggerEvent)"); |
|
|
556 |
} |
|
|
557 |
}); |
|
|
558 |
|
|
|
559 |
var prevent = Y.one("#prevent"); |
|
|
560 |
tt.on("triggerEnter", function(e) { |
|
|
561 |
var node = e.node; |
|
|
562 |
if (prevent.get("checked")) { |
|
|
563 |
if (node && node.get("id") == "tt4") { |
|
|
564 |
e.preventDefault(); |
|
|
565 |
} |
|
|
566 |
} |
|
|
567 |
}); |
|
|
568 |
}); |
|
|
569 |
</script> |
|
|
570 |
|
|
|
571 |
<!--END SOURCE CODE FOR EXAMPLE =============================== --> |
|
|
572 |
|
|
|
573 |
</body> |
|
|
574 |
</html> |