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<h3>queue-promote <span class="subtitle">3.0.0</span></h3>
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<div class="highlight" ><pre><span class="c">/**</span>
<span class="c"> * Adds methods promote, remove, and indexOf to Queue instances.</span>
<span class="c"> *</span>
<span class="c"> * @module queue-promote</span>
<span class="c"> * @for Queue</span>
<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">Y</span><span class="o">.</span><span class="nx">Queue</span><span class="o">.</span><span class="nx">prototype</span><span class="o">,</span> <span class="o">{</span>
<span class="c">/**</span>
<span class="c"> * Returns the current index in the queue of the specified item</span>
<span class="c"> * </span>
<span class="c"> * @method indexOf</span>
<span class="c"> * @param needle {MIXED} the item to search for</span>
<span class="c"> * @return {Number} the index of the item or -1 if not found</span>
<span class="c"> */</span>
<span class="nx">indexOf</span> <span class="o">:</span> <span class="k">function</span> <span class="o">(</span><span class="nx">callback</span><span class="o">)</span> <span class="o">{</span>
<span class="k">return</span> <span class="nx">Y</span><span class="o">.</span><span class="nb">Array</span><span class="o">.</span><span class="nx">indexOf</span><span class="o">(</span><span class="k">this</span><span class="o">.</span><span class="nx">_q</span><span class="o">,</span> <span class="nx">callback</span><span class="o">);</span>
<span class="o">},</span>
<span class="c">/**</span>
<span class="c"> * Moves the referenced item to the head of the queue</span>
<span class="c"> *</span>
<span class="c"> * @method promote</span>
<span class="c"> * @param item {MIXED} an item in the queue</span>
<span class="c"> */</span>
<span class="nx">promote</span> <span class="o">:</span> <span class="k">function</span> <span class="o">(</span><span class="nx">callback</span><span class="o">)</span> <span class="o">{</span>
<span class="k">var</span> <span class="nx">index</span> <span class="o">=</span> <span class="k">this</span><span class="o">.</span><span class="nx">indexOf</span><span class="o">(</span><span class="nx">callback</span><span class="o">);</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">index</span> <span class="o">></span> <span class="o">-</span><span class="m">1</span><span class="o">)</span> <span class="o">{</span>
<span class="k">this</span><span class="o">.</span><span class="nx">_q</span><span class="o">.</span><span class="nx">unshift</span><span class="o">(</span><span class="k">this</span><span class="o">.</span><span class="nx">_q</span><span class="o">.</span><span class="nx">splice</span><span class="o">(</span><span class="nx">index</span><span class="o">,</span><span class="m">1</span><span class="o">));</span>
<span class="o">}</span>
<span class="o">},</span>
<span class="c">/**</span>
<span class="c"> * Removes the referenced item from the queue</span>
<span class="c"> *</span>
<span class="c"> * @method remove</span>
<span class="c"> * @param item {MIXED} an item in the queue</span>
<span class="c"> */</span>
<span class="nx">remove</span> <span class="o">:</span> <span class="k">function</span> <span class="o">(</span><span class="nx">callback</span><span class="o">)</span> <span class="o">{</span>
<span class="k">var</span> <span class="nx">index</span> <span class="o">=</span> <span class="k">this</span><span class="o">.</span><span class="nx">indexOf</span><span class="o">(</span><span class="nx">callback</span><span class="o">);</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">index</span> <span class="o">></span> <span class="o">-</span><span class="m">1</span><span class="o">)</span> <span class="o">{</span>
<span class="k">this</span><span class="o">.</span><span class="nx">_q</span><span class="o">.</span><span class="nx">splice</span><span class="o">(</span><span class="nx">index</span><span class="o">,</span><span class="m">1</span><span class="o">);</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="o">});</span>
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