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5 <title>API: event focusblur.js (YUI Library)</title> |
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19 <h3>event <span class="subtitle">3.0.0</span></h3> |
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21 > <a href="./module_event.html" title="event">event</a> |
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22 |
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23 > focusblur.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 focus and blur event listener support. These events normally</span> |
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52 <span class="c"> * do not bubble, so this adds support for that so these events</span> |
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53 <span class="c"> * can be used in event delegation scenarios.</span> |
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54 <span class="c"> * </span> |
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55 <span class="c"> * @module event</span> |
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56 <span class="c"> * @submodule event-focus</span> |
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57 <span class="c"> */</span> |
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58 <span class="o">(</span><span class="k">function</span><span class="o">()</span> <span class="o">{</span> |
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59 |
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60 <span class="k">var</span> <span class="nx">UA</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">UA</span><span class="o">,</span> |
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61 <span class="nx">Event</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">Event</span><span class="o">,</span> |
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62 <span class="nx">plugins</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">evt</span><span class="o">.</span><span class="nx">plugins</span><span class="o">,</span> |
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63 <span class="nx">ie</span> <span class="o">=</span> <span class="nx">UA</span><span class="o">.</span><span class="nx">ie</span><span class="o">,</span> |
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64 <span class="nx">bUseMutation</span> <span class="o">=</span> <span class="o">(</span><span class="nx">UA</span><span class="o">.</span><span class="nx">opera</span> <span class="o">||</span> <span class="nx">UA</span><span class="o">.</span><span class="nx">webkit</span><span class="o">),</span> |
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65 <span class="nx">eventNames</span> <span class="o">=</span> <span class="o">{</span> |
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66 <span class="nx">focus</span><span class="o">:</span> <span class="o">(</span><span class="nx">ie</span> <span class="o">?</span> <span class="s1">'focusin'</span> <span class="o">:</span> <span class="o">(</span><span class="nx">bUseMutation</span> <span class="o">?</span> <span class="s1">'DOMFocusIn'</span> <span class="o">:</span> <span class="s1">'focus'</span><span class="o">)),</span> |
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67 <span class="nx">blur</span><span class="o">:</span> <span class="o">(</span><span class="nx">ie</span> <span class="o">?</span> <span class="s1">'focusout'</span> <span class="o">:</span> <span class="o">(</span><span class="nx">bUseMutation</span> <span class="o">?</span> <span class="s1">'DOMFocusOut'</span> <span class="o">:</span> <span class="s1">'blur'</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">// Only need to use capture phase for Gecko since it doesn't support </span> |
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71 <span class="c"></span> <span class="c">// focusin, focusout, DOMFocusIn, or DOMFocusOut</span> |
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72 <span class="c"></span> <span class="nx">CAPTURE_CONFIG</span> <span class="o">=</span> <span class="o">{</span> <span class="nx">capture</span><span class="o">:</span> <span class="o">(</span><span class="nx">UA</span><span class="o">.</span><span class="nx">gecko</span> <span class="o">?</span> <span class="kc">true</span> <span class="o">:</span> <span class="kc">false</span><span class="o">)</span> <span class="o">},</span> |
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73 |
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74 |
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75 <span class="nx">attach</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="nx">config</span><span class="o">)</span> <span class="o">{</span> |
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76 |
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77 <span class="k">var</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nb">Array</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="kc">true</span><span class="o">);</span> |
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78 <span class="nx">a</span><span class="o">[</span><span class="m">0</span><span class="o">]</span> <span class="o">=</span> <span class="nx">eventNames</span><span class="o">[</span><span class="nx">a</span><span class="o">[</span><span class="m">0</span><span class="o">]];</span> |
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79 <span class="k">return</span> <span class="nx">Event</span><span class="o">.</span><span class="nx">_attach</span><span class="o">(</span><span class="nx">a</span><span class="o">,</span> <span class="nx">config</span><span class="o">);</span> |
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80 |
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81 <span class="o">},</span> |
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82 |
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83 <span class="nx">eventAdapter</span> <span class="o">=</span> <span class="o">{</span> |
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84 |
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85 <span class="nx">on</span><span class="o">:</span> <span class="k">function</span> <span class="o">()</span> <span class="o">{</span> |
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86 <span class="k">return</span> <span class="nx">attach</span><span class="o">(</span><span class="nx">arguments</span><span class="o">,</span> <span class="nx">CAPTURE_CONFIG</span><span class="o">);</span> |
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87 <span class="o">}</span> |
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88 |
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89 <span class="o">};</span> |
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90 |
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91 |
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92 <span class="nx">Event</span><span class="o">.</span><span class="nx">_attachFocus</span> <span class="o">=</span> <span class="nx">attach</span><span class="o">;</span> |
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93 <span class="nx">Event</span><span class="o">.</span><span class="nx">_attachBlur</span> <span class="o">=</span> <span class="nx">attach</span><span class="o">;</span> |
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94 |
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95 <span class="c">/**</span> |
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96 <span class="c"> * Adds a DOM focus listener. Uses the focusin event in IE, </span> |
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97 <span class="c"> * DOMFocusIn for Opera and Webkit, and the capture phase for Gecko so that</span> |
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98 <span class="c"> * the event propagates in a way that enables event delegation.</span> |
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99 <span class="c"> *</span> |
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100 <span class="c"> * @for YUI</span> |
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101 <span class="c"> * @event focus</span> |
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102 <span class="c"> * @param type {string} 'focus'</span> |
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103 <span class="c"> * @param fn {function} the callback function to execute</span> |
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104 <span class="c"> * @param o {string|HTMLElement|collection} the element(s) to bind</span> |
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105 <span class="c"> * @param context optional context object</span> |
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106 <span class="c"> * @param args 0..n additional arguments to provide to the listener.</span> |
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107 <span class="c"> * @return {EventHandle} the detach handle</span> |
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108 <span class="c"> */</span> |
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109 <span class="nx">plugins</span><span class="o">.</span><span class="nx">focus</span> <span class="o">=</span> <span class="nx">eventAdapter</span><span class="o">;</span> |
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110 |
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111 <span class="c">/**</span> |
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112 <span class="c"> * Adds a DOM blur listener. Uses the focusout event in IE, </span> |
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113 <span class="c"> * DOMFocusOut for Opera and Webkit, and the capture phase for Gecko so that</span> |
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114 <span class="c"> * the event propagates in a way that enables event delegation.</span> |
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115 <span class="c"> *</span> |
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116 <span class="c"> * @for YUI</span> |
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117 <span class="c"> * @event blur</span> |
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118 <span class="c"> * @param type {string} 'blur'</span> |
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119 <span class="c"> * @param fn {function} the callback function to execute</span> |
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120 <span class="c"> * @param o {string|HTMLElement|collection} the element(s) to bind</span> |
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121 <span class="c"> * @param context optional context object</span> |
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122 <span class="c"> * @param args 0..n additional arguments to provide to the listener.</span> |
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123 <span class="c"> * @return {EventHandle} the detach handle</span> |
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124 <span class="c"> */</span> |
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125 <span class="nx">plugins</span><span class="o">.</span><span class="nx">blur</span> <span class="o">=</span> <span class="nx">eventAdapter</span><span class="o">;</span> |
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126 |
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127 <span class="o">})();</span> |
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128 </pre></div> |
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