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21 > <a href="./module_queue.html" title="queue">queue</a> |
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22 |
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23 > queue-promote.js (source view) |
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50 <div class="highlight" ><pre><span class="c">/**</span> |
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51 <span class="c"> * Adds methods promote, remove, and indexOf to Queue instances.</span> |
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52 <span class="c"> *</span> |
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53 <span class="c"> * @module queue</span> |
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54 <span class="c"> * @submodule queue-promote</span> |
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55 <span class="c"> * @for Queue</span> |
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56 <span class="c"> */</span> |
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57 |
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58 <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> |
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59 <span class="c">/**</span> |
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60 <span class="c"> * Returns the current index in the queue of the specified item</span> |
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61 <span class="c"> * </span> |
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62 <span class="c"> * @method indexOf</span> |
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63 <span class="c"> * @param needle {MIXED} the item to search for</span> |
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64 <span class="c"> * @return {Number} the index of the item or -1 if not found</span> |
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65 <span class="c"> */</span> |
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66 <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> |
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67 <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> |
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68 <span class="o">},</span> |
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69 |
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70 <span class="c">/**</span> |
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71 <span class="c"> * Moves the referenced item to the head of the queue</span> |
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72 <span class="c"> *</span> |
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73 <span class="c"> * @method promote</span> |
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74 <span class="c"> * @param item {MIXED} an item in the queue</span> |
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75 <span class="c"> */</span> |
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76 <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> |
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77 <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> |
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78 |
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79 <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> |
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80 <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> |
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81 <span class="o">}</span> |
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82 <span class="o">},</span> |
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83 |
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84 <span class="c">/**</span> |
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85 <span class="c"> * Removes the referenced item from the queue</span> |
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86 <span class="c"> *</span> |
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87 <span class="c"> * @method remove</span> |
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88 <span class="c"> * @param item {MIXED} an item in the queue</span> |
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89 <span class="c"> */</span> |
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90 <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> |
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91 <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> |
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92 |
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93 <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> |
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94 <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> |
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95 <span class="o">}</span> |
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96 <span class="o">}</span> |
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97 |
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98 <span class="o">});</span> |
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