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1 define( [
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2 "./core",
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3 "./data/var/dataPriv",
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4 "./deferred",
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5 "./callbacks"
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6 ], function( jQuery, dataPriv ) {
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7
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8 "use strict";
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9
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10 jQuery.extend( {
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11 queue: function( elem, type, data ) {
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12 var queue;
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13
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14 if ( elem ) {
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15 type = ( type || "fx" ) + "queue";
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16 queue = dataPriv.get( elem, type );
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17
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18 // Speed up dequeue by getting out quickly if this is just a lookup
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19 if ( data ) {
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20 if ( !queue || Array.isArray( data ) ) {
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21 queue = dataPriv.access( elem, type, jQuery.makeArray( data ) );
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22 } else {
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23 queue.push( data );
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24 }
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25 }
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26 return queue || [];
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27 }
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28 },
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29
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30 dequeue: function( elem, type ) {
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31 type = type || "fx";
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32
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33 var queue = jQuery.queue( elem, type ),
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34 startLength = queue.length,
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35 fn = queue.shift(),
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36 hooks = jQuery._queueHooks( elem, type ),
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37 next = function() {
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38 jQuery.dequeue( elem, type );
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39 };
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40
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41 // If the fx queue is dequeued, always remove the progress sentinel
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42 if ( fn === "inprogress" ) {
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43 fn = queue.shift();
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44 startLength--;
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45 }
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46
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47 if ( fn ) {
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48
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49 // Add a progress sentinel to prevent the fx queue from being
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50 // automatically dequeued
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51 if ( type === "fx" ) {
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52 queue.unshift( "inprogress" );
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53 }
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54
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55 // Clear up the last queue stop function
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56 delete hooks.stop;
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57 fn.call( elem, next, hooks );
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58 }
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59
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60 if ( !startLength && hooks ) {
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61 hooks.empty.fire();
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62 }
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63 },
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64
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65 // Not public - generate a queueHooks object, or return the current one
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66 _queueHooks: function( elem, type ) {
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67 var key = type + "queueHooks";
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68 return dataPriv.get( elem, key ) || dataPriv.access( elem, key, {
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69 empty: jQuery.Callbacks( "once memory" ).add( function() {
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70 dataPriv.remove( elem, [ type + "queue", key ] );
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71 } )
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72 } );
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73 }
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74 } );
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75
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76 jQuery.fn.extend( {
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77 queue: function( type, data ) {
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78 var setter = 2;
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79
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80 if ( typeof type !== "string" ) {
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81 data = type;
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82 type = "fx";
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83 setter--;
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84 }
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85
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86 if ( arguments.length < setter ) {
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87 return jQuery.queue( this[ 0 ], type );
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88 }
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89
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90 return data === undefined ?
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91 this :
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92 this.each( function() {
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93 var queue = jQuery.queue( this, type, data );
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94
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95 // Ensure a hooks for this queue
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96 jQuery._queueHooks( this, type );
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97
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98 if ( type === "fx" && queue[ 0 ] !== "inprogress" ) {
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99 jQuery.dequeue( this, type );
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100 }
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101 } );
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102 },
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103 dequeue: function( type ) {
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104 return this.each( function() {
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105 jQuery.dequeue( this, type );
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106 } );
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107 },
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108 clearQueue: function( type ) {
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109 return this.queue( type || "fx", [] );
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110 },
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111
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112 // Get a promise resolved when queues of a certain type
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113 // are emptied (fx is the type by default)
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114 promise: function( type, obj ) {
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115 var tmp,
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116 count = 1,
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117 defer = jQuery.Deferred(),
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118 elements = this,
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119 i = this.length,
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120 resolve = function() {
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121 if ( !( --count ) ) {
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122 defer.resolveWith( elements, [ elements ] );
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123 }
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124 };
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125
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126 if ( typeof type !== "string" ) {
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127 obj = type;
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128 type = undefined;
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129 }
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130 type = type || "fx";
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131
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132 while ( i-- ) {
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133 tmp = dataPriv.get( elements[ i ], type + "queueHooks" );
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134 if ( tmp && tmp.empty ) {
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135 count++;
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136 tmp.empty.add( resolve );
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137 }
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138 }
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139 resolve();
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140 return defer.promise( obj );
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141 }
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142 } );
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143
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144 return jQuery;
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145 } );
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