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1 /*!
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2 * jQuery UI Autocomplete 1.10.4
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3 * http://jqueryui.com
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4 *
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5 * Copyright 2014 jQuery Foundation and other contributors
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6 * Released under the MIT license.
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7 * http://jquery.org/license
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8 *
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9 * http://api.jqueryui.com/autocomplete/
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10 *
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11 * Depends:
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12 * jquery.ui.core.js
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13 * jquery.ui.widget.js
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14 * jquery.ui.position.js
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15 * jquery.ui.menu.js
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16 */
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17 (function( $, undefined ) {
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18
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19 $.widget( "ui.autocomplete", {
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20 version: "1.10.4",
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21 defaultElement: "<input>",
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22 options: {
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23 appendTo: null,
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24 autoFocus: false,
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25 delay: 300,
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26 minLength: 1,
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27 position: {
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28 my: "left top",
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29 at: "left bottom",
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30 collision: "none"
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31 },
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32 source: null,
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33
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34 // callbacks
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35 change: null,
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36 close: null,
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37 focus: null,
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38 open: null,
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39 response: null,
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40 search: null,
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41 select: null
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42 },
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43
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44 requestIndex: 0,
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45 pending: 0,
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46
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47 _create: function() {
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48 // Some browsers only repeat keydown events, not keypress events,
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49 // so we use the suppressKeyPress flag to determine if we've already
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50 // handled the keydown event. #7269
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51 // Unfortunately the code for & in keypress is the same as the up arrow,
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52 // so we use the suppressKeyPressRepeat flag to avoid handling keypress
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53 // events when we know the keydown event was used to modify the
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54 // search term. #7799
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55 var suppressKeyPress, suppressKeyPressRepeat, suppressInput,
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56 nodeName = this.element[0].nodeName.toLowerCase(),
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57 isTextarea = nodeName === "textarea",
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58 isInput = nodeName === "input";
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59
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60 this.isMultiLine =
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61 // Textareas are always multi-line
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62 isTextarea ? true :
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63 // Inputs are always single-line, even if inside a contentEditable element
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64 // IE also treats inputs as contentEditable
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65 isInput ? false :
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66 // All other element types are determined by whether or not they're contentEditable
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67 this.element.prop( "isContentEditable" );
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68
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69 this.valueMethod = this.element[ isTextarea || isInput ? "val" : "text" ];
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70 this.isNewMenu = true;
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71
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72 this.element
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73 .addClass( "ui-autocomplete-input" )
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74 .attr( "autocomplete", "off" );
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75
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76 this._on( this.element, {
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77 keydown: function( event ) {
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78 if ( this.element.prop( "readOnly" ) ) {
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79 suppressKeyPress = true;
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80 suppressInput = true;
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81 suppressKeyPressRepeat = true;
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82 return;
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83 }
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84
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85 suppressKeyPress = false;
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86 suppressInput = false;
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87 suppressKeyPressRepeat = false;
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88 var keyCode = $.ui.keyCode;
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89 switch( event.keyCode ) {
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90 case keyCode.PAGE_UP:
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91 suppressKeyPress = true;
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92 this._move( "previousPage", event );
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93 break;
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94 case keyCode.PAGE_DOWN:
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95 suppressKeyPress = true;
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96 this._move( "nextPage", event );
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97 break;
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98 case keyCode.UP:
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99 suppressKeyPress = true;
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100 this._keyEvent( "previous", event );
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101 break;
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102 case keyCode.DOWN:
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103 suppressKeyPress = true;
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104 this._keyEvent( "next", event );
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105 break;
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106 case keyCode.ENTER:
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107 case keyCode.NUMPAD_ENTER:
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108 // when menu is open and has focus
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109 if ( this.menu.active ) {
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110 // #6055 - Opera still allows the keypress to occur
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111 // which causes forms to submit
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112 suppressKeyPress = true;
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113 event.preventDefault();
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114 this.menu.select( event );
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115 }
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116 break;
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117 case keyCode.TAB:
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118 if ( this.menu.active ) {
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119 this.menu.select( event );
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120 }
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121 break;
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122 case keyCode.ESCAPE:
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123 if ( this.menu.element.is( ":visible" ) ) {
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124 this._value( this.term );
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125 this.close( event );
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126 // Different browsers have different default behavior for escape
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127 // Single press can mean undo or clear
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128 // Double press in IE means clear the whole form
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129 event.preventDefault();
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130 }
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131 break;
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132 default:
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133 suppressKeyPressRepeat = true;
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134 // search timeout should be triggered before the input value is changed
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135 this._searchTimeout( event );
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136 break;
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137 }
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138 },
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139 keypress: function( event ) {
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140 if ( suppressKeyPress ) {
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141 suppressKeyPress = false;
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142 if ( !this.isMultiLine || this.menu.element.is( ":visible" ) ) {
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143 event.preventDefault();
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144 }
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145 return;
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146 }
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147 if ( suppressKeyPressRepeat ) {
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148 return;
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149 }
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150
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151 // replicate some key handlers to allow them to repeat in Firefox and Opera
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152 var keyCode = $.ui.keyCode;
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153 switch( event.keyCode ) {
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154 case keyCode.PAGE_UP:
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155 this._move( "previousPage", event );
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156 break;
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157 case keyCode.PAGE_DOWN:
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158 this._move( "nextPage", event );
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159 break;
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160 case keyCode.UP:
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161 this._keyEvent( "previous", event );
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162 break;
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163 case keyCode.DOWN:
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164 this._keyEvent( "next", event );
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165 break;
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166 }
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167 },
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168 input: function( event ) {
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169 if ( suppressInput ) {
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170 suppressInput = false;
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171 event.preventDefault();
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172 return;
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173 }
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174 this._searchTimeout( event );
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175 },
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176 focus: function() {
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177 this.selectedItem = null;
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178 this.previous = this._value();
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179 },
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180 blur: function( event ) {
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181 if ( this.cancelBlur ) {
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182 delete this.cancelBlur;
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183 return;
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184 }
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185
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186 clearTimeout( this.searching );
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187 this.close( event );
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188 this._change( event );
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189 }
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190 });
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191
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192 this._initSource();
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193 this.menu = $( "<ul>" )
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194 .addClass( "ui-autocomplete ui-front" )
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195 .appendTo( this._appendTo() )
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196 .menu({
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197 // disable ARIA support, the live region takes care of that
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198 role: null
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199 })
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200 .hide()
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201 .data( "ui-menu" );
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202
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203 this._on( this.menu.element, {
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204 mousedown: function( event ) {
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205 // prevent moving focus out of the text field
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206 event.preventDefault();
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207
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208 // IE doesn't prevent moving focus even with event.preventDefault()
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209 // so we set a flag to know when we should ignore the blur event
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210 this.cancelBlur = true;
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211 this._delay(function() {
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212 delete this.cancelBlur;
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213 });
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214
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215 // clicking on the scrollbar causes focus to shift to the body
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216 // but we can't detect a mouseup or a click immediately afterward
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217 // so we have to track the next mousedown and close the menu if
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218 // the user clicks somewhere outside of the autocomplete
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219 var menuElement = this.menu.element[ 0 ];
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220 if ( !$( event.target ).closest( ".ui-menu-item" ).length ) {
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221 this._delay(function() {
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222 var that = this;
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223 this.document.one( "mousedown", function( event ) {
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224 if ( event.target !== that.element[ 0 ] &&
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225 event.target !== menuElement &&
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226 !$.contains( menuElement, event.target ) ) {
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227 that.close();
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228 }
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229 });
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230 });
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231 }
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232 },
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233 menufocus: function( event, ui ) {
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234 // support: Firefox
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235 // Prevent accidental activation of menu items in Firefox (#7024 #9118)
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236 if ( this.isNewMenu ) {
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237 this.isNewMenu = false;
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238 if ( event.originalEvent && /^mouse/.test( event.originalEvent.type ) ) {
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239 this.menu.blur();
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240
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241 this.document.one( "mousemove", function() {
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242 $( event.target ).trigger( event.originalEvent );
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243 });
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244
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245 return;
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246 }
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247 }
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248
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249 var item = ui.item.data( "ui-autocomplete-item" );
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250 if ( false !== this._trigger( "focus", event, { item: item } ) ) {
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251 // use value to match what will end up in the input, if it was a key event
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252 if ( event.originalEvent && /^key/.test( event.originalEvent.type ) ) {
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253 this._value( item.value );
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254 }
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255 } else {
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256 // Normally the input is populated with the item's value as the
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257 // menu is navigated, causing screen readers to notice a change and
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258 // announce the item. Since the focus event was canceled, this doesn't
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259 // happen, so we update the live region so that screen readers can
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260 // still notice the change and announce it.
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261 this.liveRegion.text( item.value );
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262 }
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263 },
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264 menuselect: function( event, ui ) {
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265 var item = ui.item.data( "ui-autocomplete-item" ),
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266 previous = this.previous;
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267
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268 // only trigger when focus was lost (click on menu)
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269 if ( this.element[0] !== this.document[0].activeElement ) {
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270 this.element.focus();
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271 this.previous = previous;
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272 // #6109 - IE triggers two focus events and the second
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273 // is asynchronous, so we need to reset the previous
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274 // term synchronously and asynchronously :-(
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275 this._delay(function() {
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276 this.previous = previous;
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277 this.selectedItem = item;
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278 });
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279 }
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280
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281 if ( false !== this._trigger( "select", event, { item: item } ) ) {
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282 this._value( item.value );
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283 }
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284 // reset the term after the select event
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285 // this allows custom select handling to work properly
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286 this.term = this._value();
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287
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288 this.close( event );
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289 this.selectedItem = item;
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290 }
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291 });
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292
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293 this.liveRegion = $( "<span>", {
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294 role: "status",
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295 "aria-live": "polite"
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296 })
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297 .addClass( "ui-helper-hidden-accessible" )
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298 .insertBefore( this.element );
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299
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300 // turning off autocomplete prevents the browser from remembering the
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301 // value when navigating through history, so we re-enable autocomplete
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302 // if the page is unloaded before the widget is destroyed. #7790
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303 this._on( this.window, {
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304 beforeunload: function() {
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305 this.element.removeAttr( "autocomplete" );
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306 }
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307 });
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308 },
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309
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310 _destroy: function() {
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311 clearTimeout( this.searching );
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312 this.element
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313 .removeClass( "ui-autocomplete-input" )
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314 .removeAttr( "autocomplete" );
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315 this.menu.element.remove();
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316 this.liveRegion.remove();
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317 },
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318
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319 _setOption: function( key, value ) {
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320 this._super( key, value );
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321 if ( key === "source" ) {
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322 this._initSource();
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323 }
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324 if ( key === "appendTo" ) {
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325 this.menu.element.appendTo( this._appendTo() );
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326 }
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327 if ( key === "disabled" && value && this.xhr ) {
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328 this.xhr.abort();
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329 }
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330 },
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331
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332 _appendTo: function() {
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333 var element = this.options.appendTo;
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334
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335 if ( element ) {
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336 element = element.jquery || element.nodeType ?
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337 $( element ) :
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338 this.document.find( element ).eq( 0 );
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339 }
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340
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341 if ( !element ) {
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342 element = this.element.closest( ".ui-front" );
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343 }
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344
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345 if ( !element.length ) {
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346 element = this.document[0].body;
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347 }
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348
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349 return element;
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350 },
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351
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352 _initSource: function() {
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353 var array, url,
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354 that = this;
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355 if ( $.isArray(this.options.source) ) {
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356 array = this.options.source;
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357 this.source = function( request, response ) {
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358 response( $.ui.autocomplete.filter( array, request.term ) );
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359 };
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360 } else if ( typeof this.options.source === "string" ) {
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361 url = this.options.source;
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362 this.source = function( request, response ) {
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363 if ( that.xhr ) {
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364 that.xhr.abort();
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365 }
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366 that.xhr = $.ajax({
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367 url: url,
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368 data: request,
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369 dataType: "json",
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370 success: function( data ) {
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371 response( data );
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372 },
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373 error: function() {
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374 response( [] );
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375 }
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376 });
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377 };
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378 } else {
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379 this.source = this.options.source;
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380 }
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381 },
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382
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383 _searchTimeout: function( event ) {
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384 clearTimeout( this.searching );
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385 this.searching = this._delay(function() {
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386 // only search if the value has changed
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387 if ( this.term !== this._value() ) {
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388 this.selectedItem = null;
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389 this.search( null, event );
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390 }
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391 }, this.options.delay );
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392 },
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393
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394 search: function( value, event ) {
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395 value = value != null ? value : this._value();
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396
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397 // always save the actual value, not the one passed as an argument
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398 this.term = this._value();
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399
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400 if ( value.length < this.options.minLength ) {
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401 return this.close( event );
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402 }
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403
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404 if ( this._trigger( "search", event ) === false ) {
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405 return;
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406 }
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407
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408 return this._search( value );
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409 },
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410
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411 _search: function( value ) {
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412 this.pending++;
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413 this.element.addClass( "ui-autocomplete-loading" );
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414 this.cancelSearch = false;
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415
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416 this.source( { term: value }, this._response() );
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417 },
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418
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419 _response: function() {
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420 var index = ++this.requestIndex;
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421
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422 return $.proxy(function( content ) {
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423 if ( index === this.requestIndex ) {
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424 this.__response( content );
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425 }
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426
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427 this.pending--;
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428 if ( !this.pending ) {
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429 this.element.removeClass( "ui-autocomplete-loading" );
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430 }
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431 }, this );
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432 },
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433
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434 __response: function( content ) {
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435 if ( content ) {
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436 content = this._normalize( content );
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437 }
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438 this._trigger( "response", null, { content: content } );
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439 if ( !this.options.disabled && content && content.length && !this.cancelSearch ) {
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440 this._suggest( content );
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441 this._trigger( "open" );
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442 } else {
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443 // use ._close() instead of .close() so we don't cancel future searches
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444 this._close();
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445 }
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446 },
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447
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448 close: function( event ) {
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449 this.cancelSearch = true;
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450 this._close( event );
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451 },
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452
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453 _close: function( event ) {
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454 if ( this.menu.element.is( ":visible" ) ) {
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455 this.menu.element.hide();
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456 this.menu.blur();
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457 this.isNewMenu = true;
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458 this._trigger( "close", event );
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459 }
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460 },
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461
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462 _change: function( event ) {
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463 if ( this.previous !== this._value() ) {
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464 this._trigger( "change", event, { item: this.selectedItem } );
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465 }
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466 },
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467
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468 _normalize: function( items ) {
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469 // assume all items have the right format when the first item is complete
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470 if ( items.length && items[0].label && items[0].value ) {
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471 return items;
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472 }
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473 return $.map( items, function( item ) {
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474 if ( typeof item === "string" ) {
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475 return {
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476 label: item,
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477 value: item
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478 };
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479 }
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480 return $.extend({
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481 label: item.label || item.value,
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482 value: item.value || item.label
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483 }, item );
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484 });
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485 },
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486
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487 _suggest: function( items ) {
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488 var ul = this.menu.element.empty();
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489 this._renderMenu( ul, items );
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490 this.isNewMenu = true;
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491 this.menu.refresh();
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492
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|
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493 // size and position menu
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494 ul.show();
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495 this._resizeMenu();
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496 ul.position( $.extend({
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497 of: this.element
|
|
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498 }, this.options.position ));
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499
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500 if ( this.options.autoFocus ) {
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501 this.menu.next();
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|
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502 }
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503 },
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504
|
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505 _resizeMenu: function() {
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506 var ul = this.menu.element;
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507 ul.outerWidth( Math.max(
|
|
|
508 // Firefox wraps long text (possibly a rounding bug)
|
|
|
509 // so we add 1px to avoid the wrapping (#7513)
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|
|
510 ul.width( "" ).outerWidth() + 1,
|
|
|
511 this.element.outerWidth()
|
|
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512 ) );
|
|
|
513 },
|
|
|
514
|
|
|
515 _renderMenu: function( ul, items ) {
|
|
|
516 var that = this;
|
|
|
517 $.each( items, function( index, item ) {
|
|
|
518 that._renderItemData( ul, item );
|
|
|
519 });
|
|
|
520 },
|
|
|
521
|
|
|
522 _renderItemData: function( ul, item ) {
|
|
|
523 return this._renderItem( ul, item ).data( "ui-autocomplete-item", item );
|
|
|
524 },
|
|
|
525
|
|
|
526 _renderItem: function( ul, item ) {
|
|
|
527 return $( "<li>" )
|
|
|
528 .append( $( "<a>" ).text( item.label ) )
|
|
|
529 .appendTo( ul );
|
|
|
530 },
|
|
|
531
|
|
|
532 _move: function( direction, event ) {
|
|
|
533 if ( !this.menu.element.is( ":visible" ) ) {
|
|
|
534 this.search( null, event );
|
|
|
535 return;
|
|
|
536 }
|
|
|
537 if ( this.menu.isFirstItem() && /^previous/.test( direction ) ||
|
|
|
538 this.menu.isLastItem() && /^next/.test( direction ) ) {
|
|
|
539 this._value( this.term );
|
|
|
540 this.menu.blur();
|
|
|
541 return;
|
|
|
542 }
|
|
|
543 this.menu[ direction ]( event );
|
|
|
544 },
|
|
|
545
|
|
|
546 widget: function() {
|
|
|
547 return this.menu.element;
|
|
|
548 },
|
|
|
549
|
|
|
550 _value: function() {
|
|
|
551 return this.valueMethod.apply( this.element, arguments );
|
|
|
552 },
|
|
|
553
|
|
|
554 _keyEvent: function( keyEvent, event ) {
|
|
|
555 if ( !this.isMultiLine || this.menu.element.is( ":visible" ) ) {
|
|
|
556 this._move( keyEvent, event );
|
|
|
557
|
|
|
558 // prevents moving cursor to beginning/end of the text field in some browsers
|
|
|
559 event.preventDefault();
|
|
|
560 }
|
|
|
561 }
|
|
|
562 });
|
|
|
563
|
|
|
564 $.extend( $.ui.autocomplete, {
|
|
|
565 escapeRegex: function( value ) {
|
|
|
566 return value.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&");
|
|
|
567 },
|
|
|
568 filter: function(array, term) {
|
|
|
569 var matcher = new RegExp( $.ui.autocomplete.escapeRegex(term), "i" );
|
|
|
570 return $.grep( array, function(value) {
|
|
|
571 return matcher.test( value.label || value.value || value );
|
|
|
572 });
|
|
|
573 }
|
|
|
574 });
|
|
|
575
|
|
|
576
|
|
|
577 // live region extension, adding a `messages` option
|
|
|
578 // NOTE: This is an experimental API. We are still investigating
|
|
|
579 // a full solution for string manipulation and internationalization.
|
|
|
580 $.widget( "ui.autocomplete", $.ui.autocomplete, {
|
|
|
581 options: {
|
|
|
582 messages: {
|
|
|
583 noResults: "No search results.",
|
|
|
584 results: function( amount ) {
|
|
|
585 return amount + ( amount > 1 ? " results are" : " result is" ) +
|
|
|
586 " available, use up and down arrow keys to navigate.";
|
|
|
587 }
|
|
|
588 }
|
|
|
589 },
|
|
|
590
|
|
|
591 __response: function( content ) {
|
|
|
592 var message;
|
|
|
593 this._superApply( arguments );
|
|
|
594 if ( this.options.disabled || this.cancelSearch ) {
|
|
|
595 return;
|
|
|
596 }
|
|
|
597 if ( content && content.length ) {
|
|
|
598 message = this.options.messages.results( content.length );
|
|
|
599 } else {
|
|
|
600 message = this.options.messages.noResults;
|
|
|
601 }
|
|
|
602 this.liveRegion.text( message );
|
|
|
603 }
|
|
|
604 });
|
|
|
605
|
|
|
606 }( jQuery ));
|
