src/cm/media/js/lib/yui/yui3.0.0/api/event-facade.js.html
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     5 	<title>API: event-custom   event-facade.js  (YUI Library)</title>
       
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    18         <h1><a href="http://developer.yahoo.com/yui/" title="Yahoo! UI Library">Yahoo! UI Library</a></h1>
       
    19         <h3>event-custom&nbsp; <span class="subtitle">3.0.0</span></h3>
       
    20         <a href="./index.html" title="Yahoo! UI Library">Yahoo! UI Library</a> 
       
    21             &gt; <a href="./module_event-custom.html" title="event-custom">event-custom</a>
       
    22                 
       
    23                  &gt; event-facade.js (source view) 
       
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    50                         <div class="highlight" ><pre><span class="c">/**</span>
       
    51 <span class="c"> * Adds event facades, preventable default behavior, and bubbling.</span>
       
    52 <span class="c"> * events.</span>
       
    53 <span class="c"> * @module event-custom</span>
       
    54 <span class="c"> * @submodule event-custom-complex</span>
       
    55 <span class="c"> */</span>
       
    56 
       
    57 <span class="o">(</span><span class="k">function</span><span class="o">()</span> <span class="o">{</span>
       
    58 
       
    59 <span class="k">var</span> <span class="nx">FACADE</span><span class="o">,</span> <span class="nx">FACADE_KEYS</span><span class="o">,</span> <span class="nx">CEProto</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">CustomEvent</span><span class="o">.</span><span class="nx">prototype</span><span class="o">;</span>
       
    60 
       
    61 <span class="c">/**</span>
       
    62 <span class="c"> * Wraps and protects a custom event for use when emitFacade is set to true.</span>
       
    63 <span class="c"> * Requires the event-custom-complex module</span>
       
    64 <span class="c"> * @class EventFacade</span>
       
    65 <span class="c"> * @param e {Event} the custom event</span>
       
    66 <span class="c"> * @param currentTarget {HTMLElement} the element the listener was attached to</span>
       
    67 <span class="c"> */</span>
       
    68 
       
    69 <span class="nx">Y</span><span class="o">.</span><span class="nx">EventFacade</span> <span class="o">=</span> <span class="k">function</span><span class="o">(</span><span class="nx">e</span><span class="o">,</span> <span class="nx">currentTarget</span><span class="o">)</span> <span class="o">{</span>
       
    70 
       
    71     <span class="nx">e</span> <span class="o">=</span> <span class="nx">e</span> <span class="o">||</span> <span class="o">{};</span>
       
    72 
       
    73     <span class="c">/**</span>
       
    74 <span class="c">     * The arguments passed to fire </span>
       
    75 <span class="c">     * @property details</span>
       
    76 <span class="c">     * @type Array</span>
       
    77 <span class="c">     */</span>
       
    78     <span class="k">this</span><span class="o">.</span><span class="nx">details</span> <span class="o">=</span> <span class="nx">e</span><span class="o">.</span><span class="nx">details</span><span class="o">;</span>
       
    79 
       
    80     <span class="c">/**</span>
       
    81 <span class="c">     * The event type</span>
       
    82 <span class="c">     * @property type</span>
       
    83 <span class="c">     * @type string</span>
       
    84 <span class="c">     */</span>
       
    85     <span class="k">this</span><span class="o">.</span><span class="nx">type</span> <span class="o">=</span> <span class="nx">e</span><span class="o">.</span><span class="nx">type</span><span class="o">;</span>
       
    86 
       
    87     <span class="c">//////////////////////////////////////////////////////</span>
       
    88 <span class="c"></span>
       
    89     <span class="c">/**</span>
       
    90 <span class="c">     * Node reference for the targeted eventtarget</span>
       
    91 <span class="c">     * @propery target</span>
       
    92 <span class="c">     * @type Node</span>
       
    93 <span class="c">     */</span>
       
    94     <span class="k">this</span><span class="o">.</span><span class="nx">target</span> <span class="o">=</span> <span class="nx">e</span><span class="o">.</span><span class="nx">target</span><span class="o">;</span>
       
    95 
       
    96     <span class="c">/**</span>
       
    97 <span class="c">     * Node reference for the element that the listener was attached to.</span>
       
    98 <span class="c">     * @propery currentTarget</span>
       
    99 <span class="c">     * @type Node</span>
       
   100 <span class="c">     */</span>
       
   101     <span class="k">this</span><span class="o">.</span><span class="nx">currentTarget</span> <span class="o">=</span> <span class="nx">currentTarget</span><span class="o">;</span>
       
   102 
       
   103     <span class="c">/**</span>
       
   104 <span class="c">     * Node reference to the relatedTarget</span>
       
   105 <span class="c">     * @propery relatedTarget</span>
       
   106 <span class="c">     * @type Node</span>
       
   107 <span class="c">     */</span>
       
   108     <span class="k">this</span><span class="o">.</span><span class="nx">relatedTarget</span> <span class="o">=</span> <span class="nx">e</span><span class="o">.</span><span class="nx">relatedTarget</span><span class="o">;</span>
       
   109     
       
   110     <span class="c">/**</span>
       
   111 <span class="c">     * Stops the propagation to the next bubble target</span>
       
   112 <span class="c">     * @method stopPropagation</span>
       
   113 <span class="c">     */</span>
       
   114     <span class="k">this</span><span class="o">.</span><span class="nx">stopPropagation</span> <span class="o">=</span> <span class="k">function</span><span class="o">()</span> <span class="o">{</span>
       
   115         <span class="nx">e</span><span class="o">.</span><span class="nx">stopPropagation</span><span class="o">();</span>
       
   116     <span class="o">};</span>
       
   117 
       
   118     <span class="c">/**</span>
       
   119 <span class="c">     * Stops the propagation to the next bubble target and</span>
       
   120 <span class="c">     * prevents any additional listeners from being exectued</span>
       
   121 <span class="c">     * on the current target.</span>
       
   122 <span class="c">     * @method stopImmediatePropagation</span>
       
   123 <span class="c">     */</span>
       
   124     <span class="k">this</span><span class="o">.</span><span class="nx">stopImmediatePropagation</span> <span class="o">=</span> <span class="k">function</span><span class="o">()</span> <span class="o">{</span>
       
   125         <span class="nx">e</span><span class="o">.</span><span class="nx">stopImmediatePropagation</span><span class="o">();</span>
       
   126     <span class="o">};</span>
       
   127 
       
   128     <span class="c">/**</span>
       
   129 <span class="c">     * Prevents the event&#39;s default behavior</span>
       
   130 <span class="c">     * @method preventDefault</span>
       
   131 <span class="c">     */</span>
       
   132     <span class="k">this</span><span class="o">.</span><span class="nx">preventDefault</span> <span class="o">=</span> <span class="k">function</span><span class="o">()</span> <span class="o">{</span>
       
   133         <span class="nx">e</span><span class="o">.</span><span class="nx">preventDefault</span><span class="o">();</span>
       
   134     <span class="o">};</span>
       
   135 
       
   136     <span class="c">/**</span>
       
   137 <span class="c">     * Stops the event propagation and prevents the default</span>
       
   138 <span class="c">     * event behavior.</span>
       
   139 <span class="c">     * @method halt</span>
       
   140 <span class="c">     * @param immediate {boolean} if true additional listeners</span>
       
   141 <span class="c">     * on the current target will not be executed</span>
       
   142 <span class="c">     */</span>
       
   143     <span class="k">this</span><span class="o">.</span><span class="nx">halt</span> <span class="o">=</span> <span class="k">function</span><span class="o">(</span><span class="nx">immediate</span><span class="o">)</span> <span class="o">{</span>
       
   144         <span class="nx">e</span><span class="o">.</span><span class="nx">halt</span><span class="o">(</span><span class="nx">immediate</span><span class="o">);</span>
       
   145     <span class="o">};</span>
       
   146 
       
   147 <span class="o">};</span>
       
   148 
       
   149 <span class="nx">CEProto</span><span class="o">.</span><span class="nx">fireComplex</span> <span class="o">=</span> <span class="k">function</span><span class="o">(</span><span class="nx">args</span><span class="o">)</span> <span class="o">{</span>
       
   150     <span class="k">var</span> <span class="nx">es</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">Env</span><span class="o">.</span><span class="nx">_eventstack</span><span class="o">,</span> <span class="nx">ef</span><span class="o">,</span> <span class="nx">q</span><span class="o">,</span> <span class="nx">queue</span><span class="o">,</span> <span class="nx">ce</span><span class="o">,</span> <span class="nx">ret</span><span class="o">,</span> <span class="nx">events</span><span class="o">;</span>
       
   151 
       
   152     <span class="k">if</span> <span class="o">(</span><span class="nx">es</span><span class="o">)</span> <span class="o">{</span>
       
   153         <span class="c">// queue this event if the current item in the queue bubbles</span>
       
   154 <span class="c"></span>        <span class="k">if</span> <span class="o">(</span><span class="k">this</span><span class="o">.</span><span class="nx">queuable</span> <span class="o">&amp;&amp;</span> <span class="k">this</span><span class="o">.</span><span class="nx">type</span> <span class="o">!=</span> <span class="nx">es</span><span class="o">.</span><span class="nx">next</span><span class="o">.</span><span class="nx">type</span><span class="o">)</span> <span class="o">{</span>
       
   155             <span class="k">this</span><span class="o">.</span><span class="nx">log</span><span class="o">(</span><span class="s1">&#39;queue &#39;</span> <span class="o">+</span> <span class="k">this</span><span class="o">.</span><span class="nx">type</span><span class="o">);</span>
       
   156             <span class="nx">es</span><span class="o">.</span><span class="nx">queue</span><span class="o">.</span><span class="nx">push</span><span class="o">([</span><span class="k">this</span><span class="o">,</span> <span class="nx">args</span><span class="o">]);</span>
       
   157             <span class="k">return</span> <span class="kc">true</span><span class="o">;</span>
       
   158         <span class="o">}</span>
       
   159     <span class="o">}</span> <span class="k">else</span> <span class="o">{</span>
       
   160         <span class="nx">Y</span><span class="o">.</span><span class="nx">Env</span><span class="o">.</span><span class="nx">_eventstack</span> <span class="o">=</span> <span class="o">{</span>
       
   161            <span class="c">// id of the first event in the stack</span>
       
   162 <span class="c"></span>           <span class="nx">id</span><span class="o">:</span> <span class="k">this</span><span class="o">.</span><span class="nx">id</span><span class="o">,</span>
       
   163            <span class="nx">next</span><span class="o">:</span> <span class="k">this</span><span class="o">,</span>
       
   164            <span class="nx">silent</span><span class="o">:</span> <span class="k">this</span><span class="o">.</span><span class="nx">silent</span><span class="o">,</span>
       
   165            <span class="nx">stopped</span><span class="o">:</span> <span class="m">0</span><span class="o">,</span>
       
   166            <span class="nx">prevented</span><span class="o">:</span> <span class="m">0</span><span class="o">,</span>
       
   167            <span class="nx">queue</span><span class="o">:</span> <span class="o">[]</span>
       
   168         <span class="o">};</span>
       
   169         <span class="nx">es</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">Env</span><span class="o">.</span><span class="nx">_eventstack</span><span class="o">;</span>
       
   170     <span class="o">}</span>
       
   171 
       
   172     <span class="k">this</span><span class="o">.</span><span class="nx">stopped</span> <span class="o">=</span> <span class="m">0</span><span class="o">;</span>
       
   173     <span class="k">this</span><span class="o">.</span><span class="nx">prevented</span> <span class="o">=</span> <span class="m">0</span><span class="o">;</span>
       
   174     <span class="k">this</span><span class="o">.</span><span class="nx">target</span> <span class="o">=</span> <span class="k">this</span><span class="o">.</span><span class="nx">target</span> <span class="o">||</span> <span class="k">this</span><span class="o">.</span><span class="nx">host</span><span class="o">;</span>
       
   175 
       
   176     <span class="nx">events</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">EventTarget</span><span class="o">({</span>
       
   177         <span class="nx">fireOnce</span><span class="o">:</span> <span class="kc">true</span><span class="o">,</span>
       
   178         <span class="nx">context</span><span class="o">:</span> <span class="k">this</span><span class="o">.</span><span class="nx">host</span>
       
   179     <span class="o">});</span>
       
   180 
       
   181     <span class="k">this</span><span class="o">.</span><span class="nx">events</span> <span class="o">=</span> <span class="nx">events</span><span class="o">;</span>
       
   182 
       
   183     <span class="k">if</span> <span class="o">(</span><span class="k">this</span><span class="o">.</span><span class="nx">preventedFn</span><span class="o">)</span> <span class="o">{</span>
       
   184         <span class="nx">events</span><span class="o">.</span><span class="nx">on</span><span class="o">(</span><span class="s1">&#39;prevented&#39;</span><span class="o">,</span> <span class="k">this</span><span class="o">.</span><span class="nx">preventedFn</span><span class="o">);</span>
       
   185     <span class="o">}</span>
       
   186 
       
   187     <span class="k">if</span> <span class="o">(</span><span class="k">this</span><span class="o">.</span><span class="nx">stoppedFn</span><span class="o">)</span> <span class="o">{</span>
       
   188         <span class="nx">events</span><span class="o">.</span><span class="nx">on</span><span class="o">(</span><span class="s1">&#39;stopped&#39;</span><span class="o">,</span> <span class="k">this</span><span class="o">.</span><span class="nx">stoppedFn</span><span class="o">);</span>
       
   189     <span class="o">}</span>
       
   190 
       
   191     <span class="k">this</span><span class="o">.</span><span class="nx">currentTarget</span> <span class="o">=</span> <span class="k">this</span><span class="o">.</span><span class="nx">host</span> <span class="o">||</span> <span class="k">this</span><span class="o">.</span><span class="nx">currentTarget</span><span class="o">;</span>
       
   192 
       
   193     <span class="k">this</span><span class="o">.</span><span class="nx">details</span> <span class="o">=</span> <span class="nx">args</span><span class="o">.</span><span class="nx">slice</span><span class="o">();</span> <span class="c">// original arguments in the details</span>
       
   194 <span class="c"></span>
       
   195     <span class="c">// this.log(&quot;Firing &quot; + this  + &quot;, &quot; + &quot;args: &quot; + args);</span>
       
   196 <span class="c"></span>    <span class="k">this</span><span class="o">.</span><span class="nx">log</span><span class="o">(</span><span class="s2">&quot;Firing &quot;</span> <span class="o">+</span> <span class="k">this</span><span class="o">.</span><span class="nx">type</span><span class="o">);</span>
       
   197 
       
   198     <span class="k">this</span><span class="o">.</span><span class="nx">_facade</span> <span class="o">=</span> <span class="kc">null</span><span class="o">;</span> <span class="c">// kill facade to eliminate stale properties</span>
       
   199 <span class="c"></span>
       
   200     <span class="nx">ef</span> <span class="o">=</span> <span class="k">this</span><span class="o">.</span><span class="nx">_getFacade</span><span class="o">(</span><span class="nx">args</span><span class="o">);</span>
       
   201 
       
   202     <span class="k">if</span> <span class="o">(</span><span class="nx">Y</span><span class="o">.</span><span class="nx">Lang</span><span class="o">.</span><span class="nx">isObject</span><span class="o">(</span><span class="nx">args</span><span class="o">[</span><span class="m">0</span><span class="o">]))</span> <span class="o">{</span>
       
   203         <span class="nx">args</span><span class="o">[</span><span class="m">0</span><span class="o">]</span> <span class="o">=</span> <span class="nx">ef</span><span class="o">;</span>
       
   204     <span class="o">}</span> <span class="k">else</span> <span class="o">{</span>
       
   205         <span class="nx">args</span><span class="o">.</span><span class="nx">unshift</span><span class="o">(</span><span class="nx">ef</span><span class="o">);</span>
       
   206     <span class="o">}</span>
       
   207 
       
   208     <span class="k">if</span> <span class="o">(</span><span class="k">this</span><span class="o">.</span><span class="nx">hasSubscribers</span><span class="o">)</span> <span class="o">{</span>
       
   209         <span class="k">this</span><span class="o">.</span><span class="nx">_procSubs</span><span class="o">(</span><span class="nx">Y</span><span class="o">.</span><span class="nx">merge</span><span class="o">(</span><span class="k">this</span><span class="o">.</span><span class="nx">subscribers</span><span class="o">),</span> <span class="nx">args</span><span class="o">,</span> <span class="nx">ef</span><span class="o">);</span>
       
   210     <span class="o">}</span>
       
   211 
       
   212     <span class="c">// bubble if this is hosted in an event target and propagation has not been stopped</span>
       
   213 <span class="c"></span>    <span class="k">if</span> <span class="o">(</span><span class="k">this</span><span class="o">.</span><span class="nx">bubbles</span> <span class="o">&amp;&amp;</span> <span class="k">this</span><span class="o">.</span><span class="nx">host</span> <span class="o">&amp;&amp;</span> <span class="k">this</span><span class="o">.</span><span class="nx">host</span><span class="o">.</span><span class="nx">bubble</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="k">this</span><span class="o">.</span><span class="nx">stopped</span><span class="o">)</span> <span class="o">{</span>
       
   214         <span class="nx">es</span><span class="o">.</span><span class="nx">stopped</span> <span class="o">=</span> <span class="m">0</span><span class="o">;</span>
       
   215         <span class="nx">es</span><span class="o">.</span><span class="nx">prevented</span> <span class="o">=</span> <span class="m">0</span><span class="o">;</span>
       
   216         <span class="nx">ret</span> <span class="o">=</span> <span class="k">this</span><span class="o">.</span><span class="nx">host</span><span class="o">.</span><span class="nx">bubble</span><span class="o">(</span><span class="k">this</span><span class="o">);</span>
       
   217 
       
   218         <span class="k">this</span><span class="o">.</span><span class="nx">stopped</span> <span class="o">=</span> <span class="nb">Math</span><span class="o">.</span><span class="nx">max</span><span class="o">(</span><span class="k">this</span><span class="o">.</span><span class="nx">stopped</span><span class="o">,</span> <span class="nx">es</span><span class="o">.</span><span class="nx">stopped</span><span class="o">);</span>
       
   219         <span class="k">this</span><span class="o">.</span><span class="nx">prevented</span> <span class="o">=</span> <span class="nb">Math</span><span class="o">.</span><span class="nx">max</span><span class="o">(</span><span class="k">this</span><span class="o">.</span><span class="nx">prevented</span><span class="o">,</span> <span class="nx">es</span><span class="o">.</span><span class="nx">prevented</span><span class="o">);</span>
       
   220 
       
   221     <span class="o">}</span>
       
   222 
       
   223     <span class="c">// execute the default behavior if not prevented</span>
       
   224 <span class="c"></span>    <span class="k">if</span> <span class="o">(</span><span class="k">this</span><span class="o">.</span><span class="nx">defaultFn</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="k">this</span><span class="o">.</span><span class="nx">prevented</span><span class="o">)</span> <span class="o">{</span>
       
   225         <span class="k">this</span><span class="o">.</span><span class="nx">defaultFn</span><span class="o">.</span><span class="nx">apply</span><span class="o">(</span><span class="k">this</span><span class="o">.</span><span class="nx">host</span> <span class="o">||</span> <span class="k">this</span><span class="o">,</span> <span class="nx">args</span><span class="o">);</span>
       
   226     <span class="o">}</span>
       
   227 
       
   228     <span class="c">// broadcast listeners are fired as discreet events on the</span>
       
   229 <span class="c"></span>    <span class="c">// YUI instance and potentially the YUI global.</span>
       
   230 <span class="c"></span>    <span class="k">this</span><span class="o">.</span><span class="nx">_broadcast</span><span class="o">(</span><span class="nx">args</span><span class="o">);</span>
       
   231 
       
   232     <span class="c">// process after listeners.  If the default behavior was</span>
       
   233 <span class="c"></span>    <span class="c">// prevented, the after events don&#39;t fire.</span>
       
   234 <span class="c"></span>    <span class="k">if</span> <span class="o">(</span><span class="k">this</span><span class="o">.</span><span class="nx">hasAfters</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="k">this</span><span class="o">.</span><span class="nx">prevented</span> <span class="o">&amp;&amp;</span> <span class="k">this</span><span class="o">.</span><span class="nx">stopped</span> <span class="o">&lt;</span> <span class="m">2</span><span class="o">)</span> <span class="o">{</span>
       
   235         <span class="k">this</span><span class="o">.</span><span class="nx">_procSubs</span><span class="o">(</span><span class="nx">Y</span><span class="o">.</span><span class="nx">merge</span><span class="o">(</span><span class="k">this</span><span class="o">.</span><span class="nx">afters</span><span class="o">),</span> <span class="nx">args</span><span class="o">,</span> <span class="nx">ef</span><span class="o">);</span>
       
   236     <span class="o">}</span>
       
   237 
       
   238     <span class="k">if</span> <span class="o">(</span><span class="nx">es</span><span class="o">.</span><span class="nx">id</span> <span class="o">===</span> <span class="k">this</span><span class="o">.</span><span class="nx">id</span><span class="o">)</span> <span class="o">{</span>
       
   239         <span class="nx">queue</span> <span class="o">=</span> <span class="nx">es</span><span class="o">.</span><span class="nx">queue</span><span class="o">;</span>
       
   240 
       
   241         <span class="k">while</span> <span class="o">(</span><span class="nx">queue</span><span class="o">.</span><span class="nx">length</span><span class="o">)</span> <span class="o">{</span>
       
   242             <span class="nx">q</span> <span class="o">=</span> <span class="nx">queue</span><span class="o">.</span><span class="nx">pop</span><span class="o">();</span> 
       
   243             <span class="nx">ce</span> <span class="o">=</span> <span class="nx">q</span><span class="o">[</span><span class="m">0</span><span class="o">];</span>
       
   244             <span class="nx">es</span><span class="o">.</span><span class="nx">stopped</span> <span class="o">=</span> <span class="m">0</span><span class="o">;</span>
       
   245             <span class="nx">es</span><span class="o">.</span><span class="nx">prevented</span> <span class="o">=</span> <span class="m">0</span><span class="o">;</span>
       
   246             <span class="c">// set up stack to allow the next item to be processed</span>
       
   247 <span class="c"></span>            <span class="nx">es</span><span class="o">.</span><span class="nx">next</span> <span class="o">=</span> <span class="nx">ce</span><span class="o">;</span>
       
   248             <span class="nx">ce</span><span class="o">.</span><span class="nx">fire</span><span class="o">.</span><span class="nx">apply</span><span class="o">(</span><span class="nx">ce</span><span class="o">,</span> <span class="nx">q</span><span class="o">[</span><span class="m">1</span><span class="o">]);</span>
       
   249         <span class="o">}</span>
       
   250 
       
   251         <span class="nx">Y</span><span class="o">.</span><span class="nx">Env</span><span class="o">.</span><span class="nx">_eventstack</span> <span class="o">=</span> <span class="kc">null</span><span class="o">;</span>
       
   252     <span class="o">}</span> 
       
   253 
       
   254     <span class="k">return</span> <span class="k">this</span><span class="o">.</span><span class="nx">stopped</span> <span class="o">?</span> <span class="kc">false</span> <span class="o">:</span> <span class="kc">true</span><span class="o">;</span>
       
   255 <span class="o">};</span>
       
   256 
       
   257 <span class="nx">CEProto</span><span class="o">.</span><span class="nx">_getFacade</span> <span class="o">=</span> <span class="k">function</span><span class="o">()</span> <span class="o">{</span>
       
   258 
       
   259     <span class="k">var</span> <span class="nx">ef</span> <span class="o">=</span> <span class="k">this</span><span class="o">.</span><span class="nx">_facade</span><span class="o">,</span> <span class="nx">o</span><span class="o">,</span> <span class="nx">o2</span><span class="o">,</span>
       
   260     <span class="nx">args</span> <span class="o">=</span> <span class="k">this</span><span class="o">.</span><span class="nx">details</span><span class="o">;</span>
       
   261 
       
   262     <span class="k">if</span> <span class="o">(!</span><span class="nx">ef</span><span class="o">)</span> <span class="o">{</span>
       
   263         <span class="nx">ef</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">EventFacade</span><span class="o">(</span><span class="k">this</span><span class="o">,</span> <span class="k">this</span><span class="o">.</span><span class="nx">currentTarget</span><span class="o">);</span>
       
   264     <span class="o">}</span>
       
   265 
       
   266     <span class="c">// if the first argument is an object literal, apply the</span>
       
   267 <span class="c"></span>    <span class="c">// properties to the event facade</span>
       
   268 <span class="c"></span>    <span class="nx">o</span> <span class="o">=</span> <span class="nx">args</span> <span class="o">&amp;&amp;</span> <span class="nx">args</span><span class="o">[</span><span class="m">0</span><span class="o">];</span>
       
   269 
       
   270     <span class="k">if</span> <span class="o">(</span><span class="nx">Y</span><span class="o">.</span><span class="nx">Lang</span><span class="o">.</span><span class="nx">isObject</span><span class="o">(</span><span class="nx">o</span><span class="o">,</span> <span class="kc">true</span><span class="o">))</span> <span class="o">{</span>
       
   271 
       
   272         <span class="nx">o2</span> <span class="o">=</span> <span class="o">{};</span>
       
   273 
       
   274         <span class="c">// protect the event facade properties</span>
       
   275 <span class="c"></span>        <span class="nx">Y</span><span class="o">.</span><span class="nx">mix</span><span class="o">(</span><span class="nx">o2</span><span class="o">,</span> <span class="nx">ef</span><span class="o">,</span> <span class="kc">true</span><span class="o">,</span> <span class="nx">FACADE_KEYS</span><span class="o">);</span>
       
   276 
       
   277         <span class="c">// mix the data</span>
       
   278 <span class="c"></span>        <span class="nx">Y</span><span class="o">.</span><span class="nx">mix</span><span class="o">(</span><span class="nx">ef</span><span class="o">,</span> <span class="nx">o</span><span class="o">,</span> <span class="kc">true</span><span class="o">);</span>
       
   279 
       
   280         <span class="c">// restore ef</span>
       
   281 <span class="c"></span>        <span class="nx">Y</span><span class="o">.</span><span class="nx">mix</span><span class="o">(</span><span class="nx">ef</span><span class="o">,</span> <span class="nx">o2</span><span class="o">,</span> <span class="kc">true</span><span class="o">,</span> <span class="nx">FACADE_KEYS</span><span class="o">);</span>
       
   282     <span class="o">}</span>
       
   283 
       
   284     <span class="c">// update the details field with the arguments</span>
       
   285 <span class="c"></span>    <span class="c">// ef.type = this.type;</span>
       
   286 <span class="c"></span>    <span class="nx">ef</span><span class="o">.</span><span class="nx">details</span> <span class="o">=</span> <span class="k">this</span><span class="o">.</span><span class="nx">details</span><span class="o">;</span>
       
   287     <span class="nx">ef</span><span class="o">.</span><span class="nx">target</span> <span class="o">=</span> <span class="k">this</span><span class="o">.</span><span class="nx">target</span><span class="o">;</span>
       
   288     <span class="nx">ef</span><span class="o">.</span><span class="nx">currentTarget</span> <span class="o">=</span> <span class="k">this</span><span class="o">.</span><span class="nx">currentTarget</span><span class="o">;</span>
       
   289     <span class="nx">ef</span><span class="o">.</span><span class="nx">stopped</span> <span class="o">=</span> <span class="m">0</span><span class="o">;</span>
       
   290     <span class="nx">ef</span><span class="o">.</span><span class="nx">prevented</span> <span class="o">=</span> <span class="m">0</span><span class="o">;</span>
       
   291 
       
   292     <span class="k">this</span><span class="o">.</span><span class="nx">_facade</span> <span class="o">=</span> <span class="nx">ef</span><span class="o">;</span>
       
   293 
       
   294     <span class="k">return</span> <span class="k">this</span><span class="o">.</span><span class="nx">_facade</span><span class="o">;</span>
       
   295 <span class="o">};</span>
       
   296 
       
   297 <span class="c">/**</span>
       
   298 <span class="c"> * Stop propagation to bubble targets</span>
       
   299 <span class="c"> * @for CustomEvent</span>
       
   300 <span class="c"> * @method stopPropagation</span>
       
   301 <span class="c"> */</span>
       
   302 <span class="nx">CEProto</span><span class="o">.</span><span class="nx">stopPropagation</span> <span class="o">=</span> <span class="k">function</span><span class="o">()</span> <span class="o">{</span>
       
   303     <span class="k">this</span><span class="o">.</span><span class="nx">stopped</span> <span class="o">=</span> <span class="m">1</span><span class="o">;</span>
       
   304     <span class="nx">Y</span><span class="o">.</span><span class="nx">Env</span><span class="o">.</span><span class="nx">_eventstack</span><span class="o">.</span><span class="nx">stopped</span> <span class="o">=</span> <span class="m">1</span><span class="o">;</span>
       
   305     <span class="k">this</span><span class="o">.</span><span class="nx">events</span><span class="o">.</span><span class="nx">fire</span><span class="o">(</span><span class="s1">&#39;stopped&#39;</span><span class="o">,</span> <span class="k">this</span><span class="o">);</span>
       
   306 <span class="o">};</span>
       
   307 
       
   308 <span class="c">/**</span>
       
   309 <span class="c"> * Stops propagation to bubble targets, and prevents any remaining</span>
       
   310 <span class="c"> * subscribers on the current target from executing.</span>
       
   311 <span class="c"> * @method stopImmediatePropagation</span>
       
   312 <span class="c"> */</span>
       
   313 <span class="nx">CEProto</span><span class="o">.</span><span class="nx">stopImmediatePropagation</span> <span class="o">=</span> <span class="k">function</span><span class="o">()</span> <span class="o">{</span>
       
   314     <span class="k">this</span><span class="o">.</span><span class="nx">stopped</span> <span class="o">=</span> <span class="m">2</span><span class="o">;</span>
       
   315     <span class="nx">Y</span><span class="o">.</span><span class="nx">Env</span><span class="o">.</span><span class="nx">_eventstack</span><span class="o">.</span><span class="nx">stopped</span> <span class="o">=</span> <span class="m">2</span><span class="o">;</span>
       
   316     <span class="k">this</span><span class="o">.</span><span class="nx">events</span><span class="o">.</span><span class="nx">fire</span><span class="o">(</span><span class="s1">&#39;stopped&#39;</span><span class="o">,</span> <span class="k">this</span><span class="o">);</span>
       
   317 <span class="o">};</span>
       
   318 
       
   319 <span class="c">/**</span>
       
   320 <span class="c"> * Prevents the execution of this event&#39;s defaultFn</span>
       
   321 <span class="c"> * @method preventDefault</span>
       
   322 <span class="c"> */</span>
       
   323 <span class="nx">CEProto</span><span class="o">.</span><span class="nx">preventDefault</span> <span class="o">=</span> <span class="k">function</span><span class="o">()</span> <span class="o">{</span>
       
   324     <span class="k">if</span> <span class="o">(</span><span class="k">this</span><span class="o">.</span><span class="nx">preventable</span><span class="o">)</span> <span class="o">{</span>
       
   325         <span class="k">this</span><span class="o">.</span><span class="nx">prevented</span> <span class="o">=</span> <span class="m">1</span><span class="o">;</span>
       
   326         <span class="nx">Y</span><span class="o">.</span><span class="nx">Env</span><span class="o">.</span><span class="nx">_eventstack</span><span class="o">.</span><span class="nx">prevented</span> <span class="o">=</span> <span class="m">1</span><span class="o">;</span>
       
   327         <span class="k">this</span><span class="o">.</span><span class="nx">events</span><span class="o">.</span><span class="nx">fire</span><span class="o">(</span><span class="s1">&#39;prevented&#39;</span><span class="o">,</span> <span class="k">this</span><span class="o">);</span>
       
   328     <span class="o">}</span>
       
   329 <span class="o">};</span>
       
   330 
       
   331 <span class="c">/**</span>
       
   332 <span class="c"> * Stops the event propagation and prevents the default</span>
       
   333 <span class="c"> * event behavior.</span>
       
   334 <span class="c"> * @method halt</span>
       
   335 <span class="c"> * @param immediate {boolean} if true additional listeners</span>
       
   336 <span class="c"> * on the current target will not be executed</span>
       
   337 <span class="c"> */</span>
       
   338 <span class="nx">CEProto</span><span class="o">.</span><span class="nx">halt</span> <span class="o">=</span> <span class="k">function</span><span class="o">(</span><span class="nx">immediate</span><span class="o">)</span> <span class="o">{</span>
       
   339     <span class="k">if</span> <span class="o">(</span><span class="nx">immediate</span><span class="o">)</span> <span class="o">{</span>
       
   340         <span class="k">this</span><span class="o">.</span><span class="nx">stopImmediatePropagation</span><span class="o">();</span>
       
   341     <span class="o">}</span> <span class="k">else</span> <span class="o">{</span>
       
   342         <span class="k">this</span><span class="o">.</span><span class="nx">stopPropagation</span><span class="o">();</span>
       
   343     <span class="o">}</span>
       
   344     <span class="k">this</span><span class="o">.</span><span class="nx">preventDefault</span><span class="o">();</span>
       
   345 <span class="o">};</span>
       
   346 
       
   347 <span class="c">/**</span>
       
   348 <span class="c"> * Propagate an event.  Requires the event-custom-complex module.</span>
       
   349 <span class="c"> * @method bubble</span>
       
   350 <span class="c"> * @param evt {Event.Custom} the custom event to propagate</span>
       
   351 <span class="c"> * @return {boolean} the aggregated return value from Event.Custom.fire</span>
       
   352 <span class="c"> * @for EventTarget</span>
       
   353 <span class="c"> */</span>
       
   354 <span class="nx">Y</span><span class="o">.</span><span class="nx">EventTarget</span><span class="o">.</span><span class="nx">prototype</span><span class="o">.</span><span class="nx">bubble</span> <span class="o">=</span> <span class="k">function</span><span class="o">(</span><span class="nx">evt</span><span class="o">,</span> <span class="nx">args</span><span class="o">,</span> <span class="nx">target</span><span class="o">)</span> <span class="o">{</span>
       
   355 
       
   356     <span class="k">var</span> <span class="nx">targs</span> <span class="o">=</span> <span class="k">this</span><span class="o">.</span><span class="nx">_yuievt</span><span class="o">.</span><span class="nx">targets</span><span class="o">,</span> <span class="nx">ret</span> <span class="o">=</span> <span class="kc">true</span><span class="o">,</span>
       
   357         <span class="nx">t</span><span class="o">,</span> <span class="nx">type</span><span class="o">,</span> <span class="nx">ce</span><span class="o">,</span> <span class="nx">i</span><span class="o">,</span> <span class="nx">bc</span><span class="o">;</span>
       
   358 
       
   359     <span class="k">if</span> <span class="o">(!</span><span class="nx">evt</span> <span class="o">||</span> <span class="o">((!</span><span class="nx">evt</span><span class="o">.</span><span class="nx">stopped</span><span class="o">)</span> <span class="o">&amp;&amp;</span> <span class="nx">targs</span><span class="o">))</span> <span class="o">{</span>
       
   360 
       
   361         <span class="c">// Y.log(&#39;Bubbling &#39; + evt.type);</span>
       
   362 <span class="c"></span>        <span class="k">for</span> <span class="o">(</span><span class="nx">i</span> <span class="k">in</span> <span class="nx">targs</span><span class="o">)</span> <span class="o">{</span>
       
   363             <span class="k">if</span> <span class="o">(</span><span class="nx">targs</span><span class="o">.</span><span class="nx">hasOwnProperty</span><span class="o">(</span><span class="nx">i</span><span class="o">))</span> <span class="o">{</span>
       
   364                 <span class="nx">t</span> <span class="o">=</span> <span class="nx">targs</span><span class="o">[</span><span class="nx">i</span><span class="o">];</span> 
       
   365                 <span class="nx">type</span> <span class="o">=</span> <span class="nx">evt</span> <span class="o">&amp;&amp;</span> <span class="nx">evt</span><span class="o">.</span><span class="nx">type</span><span class="o">;</span>
       
   366                 <span class="nx">ce</span> <span class="o">=</span> <span class="nx">t</span><span class="o">.</span><span class="nx">getEvent</span><span class="o">(</span><span class="nx">type</span><span class="o">,</span> <span class="kc">true</span><span class="o">);</span> 
       
   367                     
       
   368                 <span class="c">// if this event was not published on the bubble target,</span>
       
   369 <span class="c"></span>                <span class="c">// publish it with sensible default properties</span>
       
   370 <span class="c"></span>                <span class="k">if</span> <span class="o">(!</span><span class="nx">ce</span><span class="o">)</span> <span class="o">{</span>
       
   371 
       
   372                     <span class="k">if</span> <span class="o">(</span><span class="nx">t</span><span class="o">.</span><span class="nx">_yuievt</span><span class="o">.</span><span class="nx">hasTargets</span><span class="o">)</span> <span class="o">{</span>
       
   373                         <span class="nx">t</span><span class="o">.</span><span class="nx">bubble</span><span class="o">.</span><span class="nx">call</span><span class="o">(</span><span class="nx">t</span><span class="o">,</span> <span class="nx">evt</span><span class="o">,</span> <span class="nx">args</span><span class="o">,</span> <span class="nx">target</span><span class="o">);</span>
       
   374                     <span class="o">}</span>
       
   375 
       
   376                 <span class="o">}</span> <span class="k">else</span> <span class="o">{</span>
       
   377                     <span class="nx">ce</span><span class="o">.</span><span class="nx">target</span> <span class="o">=</span> <span class="nx">target</span> <span class="o">||</span> <span class="o">(</span><span class="nx">evt</span> <span class="o">&amp;&amp;</span> <span class="nx">evt</span><span class="o">.</span><span class="nx">target</span><span class="o">)</span> <span class="o">||</span> <span class="k">this</span><span class="o">;</span>
       
   378                     <span class="nx">ce</span><span class="o">.</span><span class="nx">currentTarget</span> <span class="o">=</span> <span class="nx">t</span><span class="o">;</span>
       
   379 
       
   380                     <span class="nx">bc</span> <span class="o">=</span> <span class="nx">ce</span><span class="o">.</span><span class="nx">broadcast</span><span class="o">;</span>
       
   381                     <span class="nx">ce</span><span class="o">.</span><span class="nx">broadcast</span> <span class="o">=</span> <span class="kc">false</span><span class="o">;</span>
       
   382                     <span class="nx">ret</span> <span class="o">=</span> <span class="nx">ret</span> <span class="o">&amp;&amp;</span> <span class="nx">ce</span><span class="o">.</span><span class="nx">fire</span><span class="o">.</span><span class="nx">apply</span><span class="o">(</span><span class="nx">ce</span><span class="o">,</span> <span class="nx">args</span> <span class="o">||</span> <span class="nx">evt</span><span class="o">.</span><span class="nx">details</span><span class="o">);</span>
       
   383                     <span class="nx">ce</span><span class="o">.</span><span class="nx">broadcast</span> <span class="o">=</span> <span class="nx">bc</span><span class="o">;</span>
       
   384 
       
   385                     <span class="c">// stopPropagation() was called</span>
       
   386 <span class="c"></span>                    <span class="k">if</span> <span class="o">(</span><span class="nx">ce</span><span class="o">.</span><span class="nx">stopped</span><span class="o">)</span> <span class="o">{</span>
       
   387                         <span class="k">break</span><span class="o">;</span>
       
   388                     <span class="o">}</span>
       
   389                 <span class="o">}</span>
       
   390             <span class="o">}</span>
       
   391         <span class="o">}</span>
       
   392     <span class="o">}</span>
       
   393 
       
   394     <span class="k">return</span> <span class="nx">ret</span><span class="o">;</span>
       
   395 <span class="o">};</span>
       
   396 
       
   397 <span class="nx">FACADE</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">EventFacade</span><span class="o">();</span>
       
   398 <span class="nx">FACADE_KEYS</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nb">Object</span><span class="o">.</span><span class="nx">keys</span><span class="o">(</span><span class="nx">FACADE</span><span class="o">);</span>
       
   399 
       
   400 <span class="o">})();</span>
       
   401 </pre></div>
       
   402 
       
   403                     </div>
       
   404 			</div>
       
   405 		</div>
       
   406 		<div class="yui-b">
       
   407             <div class="nav">
       
   408 
       
   409                     <div id="moduleList" class="module">
       
   410                         <h4>Modules</h4>
       
   411                         <ul class="content">
       
   412                                 <li class=""><a href="module_anim.html" title="anim">anim</a></li>
       
   413                                 <li class=""><a href="module_async-queue.html" title="async-queue">async-queue</a></li>
       
   414                                 <li class=""><a href="module_attribute.html" title="attribute">attribute</a></li>
       
   415                                 <li class=""><a href="module_base.html" title="base">base</a></li>
       
   416                                 <li class=""><a href="module_cache.html" title="cache">cache</a></li>
       
   417                                 <li class=""><a href="module_classnamemanager.html" title="classnamemanager">classnamemanager</a></li>
       
   418                                 <li class=""><a href="module_collection.html" title="collection">collection</a></li>
       
   419                                 <li class=""><a href="module_console.html" title="console">console</a></li>
       
   420                                 <li class=""><a href="module_console-filters.html" title="console-filters">console-filters</a></li>
       
   421                                 <li class=""><a href="module_cookie.html" title="cookie">cookie</a></li>
       
   422                                 <li class=""><a href="module_dataschema.html" title="dataschema">dataschema</a></li>
       
   423                                 <li class=""><a href="module_datasource.html" title="datasource">datasource</a></li>
       
   424                                 <li class=""><a href="module_datatype.html" title="datatype">datatype</a></li>
       
   425                                 <li class=""><a href="module_dd.html" title="dd">dd</a></li>
       
   426                                 <li class=""><a href="module_dom.html" title="dom">dom</a></li>
       
   427                                 <li class=""><a href="module_dump.html" title="dump">dump</a></li>
       
   428                                 <li class=""><a href="module_event.html" title="event">event</a></li>
       
   429                                 <li class="selected"><a href="module_event-custom.html" title="event-custom">event-custom</a></li>
       
   430                                 <li class=""><a href="module_event-simulate.html" title="event-simulate">event-simulate</a></li>
       
   431                                 <li class=""><a href="module_history.html" title="history">history</a></li>
       
   432                                 <li class=""><a href="module_imageloader.html" title="imageloader">imageloader</a></li>
       
   433                                 <li class=""><a href="module_io.html" title="io">io</a></li>
       
   434                                 <li class=""><a href="module_json.html" title="json">json</a></li>
       
   435                                 <li class=""><a href="module_node.html" title="node">node</a></li>
       
   436                                 <li class=""><a href="module_node-focusmanager.html" title="node-focusmanager">node-focusmanager</a></li>
       
   437                                 <li class=""><a href="module_node-menunav.html" title="node-menunav">node-menunav</a></li>
       
   438                                 <li class=""><a href="module_oop.html" title="oop">oop</a></li>
       
   439                                 <li class=""><a href="module_overlay.html" title="overlay">overlay</a></li>
       
   440                                 <li class=""><a href="module_plugin.html" title="plugin">plugin</a></li>
       
   441                                 <li class=""><a href="module_profiler.html" title="profiler">profiler</a></li>
       
   442                                 <li class=""><a href="module_queue-promote.html" title="queue-promote">queue-promote</a></li>
       
   443                                 <li class=""><a href="module_slider.html" title="slider">slider</a></li>
       
   444                                 <li class=""><a href="module_stylesheet.html" title="stylesheet">stylesheet</a></li>
       
   445                                 <li class=""><a href="module_substitute.html" title="substitute">substitute</a></li>
       
   446                                 <li class=""><a href="module_test.html" title="test">test</a></li>
       
   447                                 <li class=""><a href="module_widget.html" title="widget">widget</a></li>
       
   448                                 <li class=""><a href="module_widget-position.html" title="widget-position">widget-position</a></li>
       
   449                                 <li class=""><a href="module_widget-position-ext.html" title="widget-position-ext">widget-position-ext</a></li>
       
   450                                 <li class=""><a href="module_widget-stack.html" title="widget-stack">widget-stack</a></li>
       
   451                                 <li class=""><a href="module_widget-stdmod.html" title="widget-stdmod">widget-stdmod</a></li>
       
   452                                 <li class=""><a href="module_yui.html" title="yui">yui</a></li>
       
   453                         </ul>
       
   454                     </div>
       
   455 
       
   456                     <div id="classList" class="module">
       
   457                         <h4>Classes</h4>
       
   458                         <ul class="content">
       
   459                                 <li class=""><a href="CustomEvent.html" title="CustomEvent">CustomEvent</a></li>
       
   460                                 <li class=""><a href="Do.html" title="Do">Do</a></li>
       
   461                                 <li class=""><a href="Do.AlterArgs.html" title="Do.AlterArgs">Do.AlterArgs</a></li>
       
   462                                 <li class=""><a href="Do.AlterReturn.html" title="Do.AlterReturn">Do.AlterReturn</a></li>
       
   463                                 <li class=""><a href="Do.Error.html" title="Do.Error">Do.Error</a></li>
       
   464                                 <li class=""><a href="Do.Halt.html" title="Do.Halt">Do.Halt</a></li>
       
   465                                 <li class=""><a href="Do.Method.html" title="Do.Method">Do.Method</a></li>
       
   466                                 <li class=""><a href="Do.Prevent.html" title="Do.Prevent">Do.Prevent</a></li>
       
   467                                 <li class=""><a href="EventFacade.html" title="EventFacade">EventFacade</a></li>
       
   468                                 <li class=""><a href="EventHandle.html" title="EventHandle">EventHandle</a></li>
       
   469                                 <li class=""><a href="EventTarget.html" title="EventTarget">EventTarget</a></li>
       
   470                                 <li class=""><a href="Subscriber.html" title="Subscriber">Subscriber</a></li>
       
   471                         </ul>
       
   472                     </div>
       
   473 
       
   474                     <div id="fileList" class="module">
       
   475                         <h4>Files</h4>
       
   476                         <ul class="content">        
       
   477                                 <li class=""><a href="event-custom.js.html" title="event-custom.js">event-custom.js</a></li>
       
   478                                 <li class=""><a href="event-do.js.html" title="event-do.js">event-do.js</a></li>
       
   479                                 <li class="selected"><a href="event-facade.js.html" title="event-facade.js">event-facade.js</a></li>
       
   480                                 <li class=""><a href="event-target.js.html" title="event-target.js">event-target.js</a></li>
       
   481                                 <li class=""><a href="event.js.html" title="event.js">event.js</a></li>
       
   482                         </ul>
       
   483                     </div>
       
   484 
       
   485 
       
   486 
       
   487 
       
   488 
       
   489             </div>
       
   490 		</div>
       
   491 	</div>
       
   492 	<div id="ft">
       
   493         <hr />
       
   494         Copyright &copy; 2009 Yahoo! Inc. All rights reserved.
       
   495 	</div>
       
   496 </div>
       
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