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756
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1 /*!
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2 * jQuery UI Widget 1.8.9
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3 *
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4 * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
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5 * Dual licensed under the MIT or GPL Version 2 licenses.
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6 * http://jquery.org/license
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7 *
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8 * http://docs.jquery.com/UI/Widget
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9 */
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10 (function( $, undefined ) {
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11
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12 // jQuery 1.4+
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13 if ( $.cleanData ) {
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14 var _cleanData = $.cleanData;
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15 $.cleanData = function( elems ) {
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16 for ( var i = 0, elem; (elem = elems[i]) != null; i++ ) {
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17 $( elem ).triggerHandler( "remove" );
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18 }
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19 _cleanData( elems );
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20 };
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21 } else {
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22 var _remove = $.fn.remove;
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23 $.fn.remove = function( selector, keepData ) {
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24 return this.each(function() {
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25 if ( !keepData ) {
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26 if ( !selector || $.filter( selector, [ this ] ).length ) {
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27 $( "*", this ).add( [ this ] ).each(function() {
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28 $( this ).triggerHandler( "remove" );
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29 });
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30 }
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31 }
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32 return _remove.call( $(this), selector, keepData );
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33 });
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34 };
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35 }
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36
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37 $.widget = function( name, base, prototype ) {
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38 var namespace = name.split( "." )[ 0 ],
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39 fullName;
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40 name = name.split( "." )[ 1 ];
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41 fullName = namespace + "-" + name;
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42
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43 if ( !prototype ) {
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44 prototype = base;
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45 base = $.Widget;
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46 }
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47
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48 // create selector for plugin
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49 $.expr[ ":" ][ fullName ] = function( elem ) {
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50 return !!$.data( elem, name );
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51 };
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52
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53 $[ namespace ] = $[ namespace ] || {};
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54 $[ namespace ][ name ] = function( options, element ) {
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55 // allow instantiation without initializing for simple inheritance
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56 if ( arguments.length ) {
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57 this._createWidget( options, element );
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58 }
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59 };
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60
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61 var basePrototype = new base();
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62 // we need to make the options hash a property directly on the new instance
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63 // otherwise we'll modify the options hash on the prototype that we're
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64 // inheriting from
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65 // $.each( basePrototype, function( key, val ) {
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66 // if ( $.isPlainObject(val) ) {
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67 // basePrototype[ key ] = $.extend( {}, val );
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68 // }
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69 // });
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70 basePrototype.options = $.extend( true, {}, basePrototype.options );
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71 $[ namespace ][ name ].prototype = $.extend( true, basePrototype, {
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72 namespace: namespace,
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73 widgetName: name,
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74 widgetEventPrefix: $[ namespace ][ name ].prototype.widgetEventPrefix || name,
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75 widgetBaseClass: fullName
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76 }, prototype );
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77
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78 $.widget.bridge( name, $[ namespace ][ name ] );
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79 };
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80
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81 $.widget.bridge = function( name, object ) {
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82 $.fn[ name ] = function( options ) {
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83 var isMethodCall = typeof options === "string",
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84 args = Array.prototype.slice.call( arguments, 1 ),
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85 returnValue = this;
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86
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87 // allow multiple hashes to be passed on init
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88 options = !isMethodCall && args.length ?
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89 $.extend.apply( null, [ true, options ].concat(args) ) :
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90 options;
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91
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92 // prevent calls to internal methods
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93 if ( isMethodCall && options.charAt( 0 ) === "_" ) {
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94 return returnValue;
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95 }
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96
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97 if ( isMethodCall ) {
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98 this.each(function() {
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99 var instance = $.data( this, name ),
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100 methodValue = instance && $.isFunction( instance[options] ) ?
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101 instance[ options ].apply( instance, args ) :
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102 instance;
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103 // TODO: add this back in 1.9 and use $.error() (see #5972)
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104 // if ( !instance ) {
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105 // throw "cannot call methods on " + name + " prior to initialization; " +
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106 // "attempted to call method '" + options + "'";
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107 // }
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108 // if ( !$.isFunction( instance[options] ) ) {
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109 // throw "no such method '" + options + "' for " + name + " widget instance";
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110 // }
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111 // var methodValue = instance[ options ].apply( instance, args );
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112 if ( methodValue !== instance && methodValue !== undefined ) {
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113 returnValue = methodValue;
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114 return false;
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115 }
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116 });
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117 } else {
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118 this.each(function() {
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119 var instance = $.data( this, name );
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120 if ( instance ) {
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121 instance.option( options || {} )._init();
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122 } else {
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123 $.data( this, name, new object( options, this ) );
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124 }
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125 });
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126 }
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127
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128 return returnValue;
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129 };
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130 };
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131
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132 $.Widget = function( options, element ) {
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133 // allow instantiation without initializing for simple inheritance
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134 if ( arguments.length ) {
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135 this._createWidget( options, element );
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136 }
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137 };
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138
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139 $.Widget.prototype = {
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140 widgetName: "widget",
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141 widgetEventPrefix: "",
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142 options: {
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143 disabled: false
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144 },
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145 _createWidget: function( options, element ) {
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146 // $.widget.bridge stores the plugin instance, but we do it anyway
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147 // so that it's stored even before the _create function runs
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148 $.data( element, this.widgetName, this );
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149 this.element = $( element );
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150 this.options = $.extend( true, {},
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151 this.options,
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152 this._getCreateOptions(),
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153 options );
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154
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155 var self = this;
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156 this.element.bind( "remove." + this.widgetName, function() {
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157 self.destroy();
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158 });
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159
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160 this._create();
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161 this._trigger( "create" );
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162 this._init();
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163 },
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164 _getCreateOptions: function() {
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165 return $.metadata && $.metadata.get( this.element[0] )[ this.widgetName ];
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166 },
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167 _create: function() {},
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168 _init: function() {},
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169
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170 destroy: function() {
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171 this.element
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172 .unbind( "." + this.widgetName )
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173 .removeData( this.widgetName );
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174 this.widget()
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175 .unbind( "." + this.widgetName )
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176 .removeAttr( "aria-disabled" )
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177 .removeClass(
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178 this.widgetBaseClass + "-disabled " +
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179 "ui-state-disabled" );
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180 },
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181
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182 widget: function() {
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183 return this.element;
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184 },
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185
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186 option: function( key, value ) {
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187 var options = key;
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188
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189 if ( arguments.length === 0 ) {
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190 // don't return a reference to the internal hash
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191 return $.extend( {}, this.options );
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192 }
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193
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194 if (typeof key === "string" ) {
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195 if ( value === undefined ) {
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196 return this.options[ key ];
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197 }
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198 options = {};
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199 options[ key ] = value;
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200 }
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201
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202 this._setOptions( options );
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203
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204 return this;
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205 },
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206 _setOptions: function( options ) {
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207 var self = this;
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208 $.each( options, function( key, value ) {
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209 self._setOption( key, value );
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210 });
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211
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212 return this;
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213 },
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214 _setOption: function( key, value ) {
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215 this.options[ key ] = value;
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216
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217 if ( key === "disabled" ) {
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218 this.widget()
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219 [ value ? "addClass" : "removeClass"](
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220 this.widgetBaseClass + "-disabled" + " " +
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221 "ui-state-disabled" )
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222 .attr( "aria-disabled", value );
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223 }
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224
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225 return this;
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226 },
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227
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228 enable: function() {
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229 return this._setOption( "disabled", false );
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230 },
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231 disable: function() {
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232 return this._setOption( "disabled", true );
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233 },
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234
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235 _trigger: function( type, event, data ) {
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236 var callback = this.options[ type ];
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237
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238 event = $.Event( event );
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239 event.type = ( type === this.widgetEventPrefix ?
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240 type :
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241 this.widgetEventPrefix + type ).toLowerCase();
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242 data = data || {};
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243
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244 // copy original event properties over to the new event
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245 // this would happen if we could call $.event.fix instead of $.Event
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246 // but we don't have a way to force an event to be fixed multiple times
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247 if ( event.originalEvent ) {
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248 for ( var i = $.event.props.length, prop; i; ) {
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249 prop = $.event.props[ --i ];
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250 event[ prop ] = event.originalEvent[ prop ];
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251 }
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252 }
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253
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254 this.element.trigger( event, data );
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255
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256 return !( $.isFunction(callback) &&
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257 callback.call( this.element[0], event, data ) === false ||
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258 event.isDefaultPrevented() );
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259 }
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260 };
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261
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262 })( jQuery );
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