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1 /*! |
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2 * jQuery UI Autocomplete 1.10.3 |
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3 * http://jqueryui.com |
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4 * |
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5 * Copyright 2013 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 // used to prevent race conditions with remote data sources |
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20 var requestIndex = 0; |
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21 |
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22 $.widget( "ui.autocomplete", { |
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23 version: "1.10.3", |
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24 defaultElement: "<input>", |
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25 options: { |
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26 appendTo: null, |
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27 autoFocus: false, |
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28 delay: 300, |
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29 minLength: 1, |
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30 position: { |
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31 my: "left top", |
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32 at: "left bottom", |
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33 collision: "none" |
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34 }, |
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35 source: null, |
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36 |
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37 // callbacks |
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38 change: null, |
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39 close: null, |
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40 focus: null, |
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41 open: null, |
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42 response: null, |
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43 search: null, |
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44 select: null |
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45 }, |
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46 |
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47 pending: 0, |
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48 |
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49 _create: function() { |
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50 // Some browsers only repeat keydown events, not keypress events, |
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51 // so we use the suppressKeyPress flag to determine if we've already |
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52 // handled the keydown event. #7269 |
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53 // Unfortunately the code for & in keypress is the same as the up arrow, |
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54 // so we use the suppressKeyPressRepeat flag to avoid handling keypress |
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55 // events when we know the keydown event was used to modify the |
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56 // search term. #7799 |
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57 var suppressKeyPress, suppressKeyPressRepeat, suppressInput, |
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58 nodeName = this.element[0].nodeName.toLowerCase(), |
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59 isTextarea = nodeName === "textarea", |
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60 isInput = nodeName === "input"; |
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61 |
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62 this.isMultiLine = |
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63 // Textareas are always multi-line |
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64 isTextarea ? true : |
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65 // Inputs are always single-line, even if inside a contentEditable element |
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66 // IE also treats inputs as contentEditable |
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67 isInput ? false : |
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68 // All other element types are determined by whether or not they're contentEditable |
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69 this.element.prop( "isContentEditable" ); |
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70 |
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71 this.valueMethod = this.element[ isTextarea || isInput ? "val" : "text" ]; |
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72 this.isNewMenu = true; |
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73 |
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74 this.element |
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75 .addClass( "ui-autocomplete-input" ) |
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76 .attr( "autocomplete", "off" ); |
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77 |
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78 this._on( this.element, { |
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79 keydown: function( event ) { |
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80 /*jshint maxcomplexity:15*/ |
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81 if ( this.element.prop( "readOnly" ) ) { |
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82 suppressKeyPress = true; |
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83 suppressInput = true; |
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84 suppressKeyPressRepeat = true; |
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85 return; |
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86 } |
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87 |
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88 suppressKeyPress = false; |
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89 suppressInput = false; |
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90 suppressKeyPressRepeat = false; |
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91 var keyCode = $.ui.keyCode; |
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92 switch( event.keyCode ) { |
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93 case keyCode.PAGE_UP: |
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94 suppressKeyPress = true; |
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95 this._move( "previousPage", event ); |
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96 break; |
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97 case keyCode.PAGE_DOWN: |
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98 suppressKeyPress = true; |
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99 this._move( "nextPage", event ); |
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100 break; |
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101 case keyCode.UP: |
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102 suppressKeyPress = true; |
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103 this._keyEvent( "previous", event ); |
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104 break; |
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105 case keyCode.DOWN: |
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106 suppressKeyPress = true; |
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107 this._keyEvent( "next", event ); |
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108 break; |
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109 case keyCode.ENTER: |
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110 case keyCode.NUMPAD_ENTER: |
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111 // when menu is open and has focus |
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112 if ( this.menu.active ) { |
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113 // #6055 - Opera still allows the keypress to occur |
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114 // which causes forms to submit |
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115 suppressKeyPress = true; |
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116 event.preventDefault(); |
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117 this.menu.select( event ); |
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118 } |
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119 break; |
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120 case keyCode.TAB: |
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121 if ( this.menu.active ) { |
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122 this.menu.select( event ); |
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123 } |
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124 break; |
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125 case keyCode.ESCAPE: |
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126 if ( this.menu.element.is( ":visible" ) ) { |
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127 this._value( this.term ); |
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128 this.close( event ); |
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129 // Different browsers have different default behavior for escape |
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130 // Single press can mean undo or clear |
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131 // Double press in IE means clear the whole form |
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132 event.preventDefault(); |
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133 } |
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134 break; |
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135 default: |
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136 suppressKeyPressRepeat = true; |
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137 // search timeout should be triggered before the input value is changed |
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138 this._searchTimeout( event ); |
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139 break; |
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140 } |
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141 }, |
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142 keypress: function( event ) { |
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143 if ( suppressKeyPress ) { |
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144 suppressKeyPress = false; |
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145 if ( !this.isMultiLine || this.menu.element.is( ":visible" ) ) { |
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146 event.preventDefault(); |
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147 } |
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148 return; |
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149 } |
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150 if ( suppressKeyPressRepeat ) { |
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151 return; |
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152 } |
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153 |
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154 // replicate some key handlers to allow them to repeat in Firefox and Opera |
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155 var keyCode = $.ui.keyCode; |
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156 switch( event.keyCode ) { |
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157 case keyCode.PAGE_UP: |
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158 this._move( "previousPage", event ); |
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159 break; |
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160 case keyCode.PAGE_DOWN: |
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161 this._move( "nextPage", event ); |
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162 break; |
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163 case keyCode.UP: |
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164 this._keyEvent( "previous", event ); |
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165 break; |
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166 case keyCode.DOWN: |
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167 this._keyEvent( "next", event ); |
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168 break; |
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169 } |
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170 }, |
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171 input: function( event ) { |
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172 if ( suppressInput ) { |
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173 suppressInput = false; |
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174 event.preventDefault(); |
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175 return; |
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176 } |
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177 this._searchTimeout( event ); |
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178 }, |
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179 focus: function() { |
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180 this.selectedItem = null; |
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181 this.previous = this._value(); |
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182 }, |
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183 blur: function( event ) { |
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184 if ( this.cancelBlur ) { |
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185 delete this.cancelBlur; |
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186 return; |
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187 } |
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188 |
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189 clearTimeout( this.searching ); |
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190 this.close( event ); |
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191 this._change( event ); |
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192 } |
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193 }); |
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194 |
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195 this._initSource(); |
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196 this.menu = $( "<ul>" ) |
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197 .addClass( "ui-autocomplete ui-front" ) |
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198 .appendTo( this._appendTo() ) |
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199 .menu({ |
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200 // disable ARIA support, the live region takes care of that |
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201 role: null |
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202 }) |
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203 .hide() |
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204 .data( "ui-menu" ); |
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205 |
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206 this._on( this.menu.element, { |
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207 mousedown: function( event ) { |
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208 // prevent moving focus out of the text field |
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209 event.preventDefault(); |
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210 |
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211 // IE doesn't prevent moving focus even with event.preventDefault() |
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212 // so we set a flag to know when we should ignore the blur event |
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213 this.cancelBlur = true; |
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214 this._delay(function() { |
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215 delete this.cancelBlur; |
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216 }); |
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217 |
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218 // clicking on the scrollbar causes focus to shift to the body |
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219 // but we can't detect a mouseup or a click immediately afterward |
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220 // so we have to track the next mousedown and close the menu if |
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221 // the user clicks somewhere outside of the autocomplete |
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222 var menuElement = this.menu.element[ 0 ]; |
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223 if ( !$( event.target ).closest( ".ui-menu-item" ).length ) { |
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224 this._delay(function() { |
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225 var that = this; |
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226 this.document.one( "mousedown", function( event ) { |
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227 if ( event.target !== that.element[ 0 ] && |
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228 event.target !== menuElement && |
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229 !$.contains( menuElement, event.target ) ) { |
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230 that.close(); |
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231 } |
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232 }); |
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233 }); |
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234 } |
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235 }, |
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236 menufocus: function( event, ui ) { |
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237 // support: Firefox |
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238 // Prevent accidental activation of menu items in Firefox (#7024 #9118) |
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239 if ( this.isNewMenu ) { |
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240 this.isNewMenu = false; |
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241 if ( event.originalEvent && /^mouse/.test( event.originalEvent.type ) ) { |
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242 this.menu.blur(); |
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243 |
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244 this.document.one( "mousemove", function() { |
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245 $( event.target ).trigger( event.originalEvent ); |
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246 }); |
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247 |
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248 return; |
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249 } |
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250 } |
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251 |
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252 var item = ui.item.data( "ui-autocomplete-item" ); |
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253 if ( false !== this._trigger( "focus", event, { item: item } ) ) { |
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254 // use value to match what will end up in the input, if it was a key event |
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255 if ( event.originalEvent && /^key/.test( event.originalEvent.type ) ) { |
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256 this._value( item.value ); |
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257 } |
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258 } else { |
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259 // Normally the input is populated with the item's value as the |
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260 // menu is navigated, causing screen readers to notice a change and |
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261 // announce the item. Since the focus event was canceled, this doesn't |
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262 // happen, so we update the live region so that screen readers can |
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263 // still notice the change and announce it. |
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264 this.liveRegion.text( item.value ); |
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265 } |
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266 }, |
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267 menuselect: function( event, ui ) { |
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268 var item = ui.item.data( "ui-autocomplete-item" ), |
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269 previous = this.previous; |
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270 |
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271 // only trigger when focus was lost (click on menu) |
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272 if ( this.element[0] !== this.document[0].activeElement ) { |
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273 this.element.focus(); |
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274 this.previous = previous; |
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275 // #6109 - IE triggers two focus events and the second |
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276 // is asynchronous, so we need to reset the previous |
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277 // term synchronously and asynchronously :-( |
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278 this._delay(function() { |
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279 this.previous = previous; |
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280 this.selectedItem = item; |
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281 }); |
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282 } |
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283 |
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284 if ( false !== this._trigger( "select", event, { item: item } ) ) { |
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285 this._value( item.value ); |
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286 } |
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287 // reset the term after the select event |
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288 // this allows custom select handling to work properly |
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289 this.term = this._value(); |
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290 |
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291 this.close( event ); |
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292 this.selectedItem = item; |
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293 } |
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294 }); |
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295 |
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296 this.liveRegion = $( "<span>", { |
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297 role: "status", |
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298 "aria-live": "polite" |
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299 }) |
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300 .addClass( "ui-helper-hidden-accessible" ) |
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301 .insertBefore( this.element ); |
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302 |
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303 // turning off autocomplete prevents the browser from remembering the |
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304 // value when navigating through history, so we re-enable autocomplete |
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305 // if the page is unloaded before the widget is destroyed. #7790 |
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306 this._on( this.window, { |
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307 beforeunload: function() { |
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308 this.element.removeAttr( "autocomplete" ); |
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309 } |
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310 }); |
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311 }, |
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312 |
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313 _destroy: function() { |
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314 clearTimeout( this.searching ); |
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315 this.element |
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316 .removeClass( "ui-autocomplete-input" ) |
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317 .removeAttr( "autocomplete" ); |
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318 this.menu.element.remove(); |
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319 this.liveRegion.remove(); |
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320 }, |
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321 |
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322 _setOption: function( key, value ) { |
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323 this._super( key, value ); |
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324 if ( key === "source" ) { |
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325 this._initSource(); |
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326 } |
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327 if ( key === "appendTo" ) { |
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328 this.menu.element.appendTo( this._appendTo() ); |
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329 } |
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330 if ( key === "disabled" && value && this.xhr ) { |
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331 this.xhr.abort(); |
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332 } |
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333 }, |
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334 |
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335 _appendTo: function() { |
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336 var element = this.options.appendTo; |
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337 |
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338 if ( element ) { |
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339 element = element.jquery || element.nodeType ? |
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340 $( element ) : |
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341 this.document.find( element ).eq( 0 ); |
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342 } |
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343 |
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344 if ( !element ) { |
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345 element = this.element.closest( ".ui-front" ); |
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346 } |
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347 |
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348 if ( !element.length ) { |
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349 element = this.document[0].body; |
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350 } |
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351 |
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352 return element; |
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353 }, |
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354 |
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355 _initSource: function() { |
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356 var array, url, |
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357 that = this; |
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358 if ( $.isArray(this.options.source) ) { |
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359 array = this.options.source; |
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360 this.source = function( request, response ) { |
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361 response( $.ui.autocomplete.filter( array, request.term ) ); |
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362 }; |
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363 } else if ( typeof this.options.source === "string" ) { |
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364 url = this.options.source; |
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365 this.source = function( request, response ) { |
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366 if ( that.xhr ) { |
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367 that.xhr.abort(); |
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368 } |
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369 that.xhr = $.ajax({ |
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370 url: url, |
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371 data: request, |
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372 dataType: "json", |
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373 success: function( data ) { |
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374 response( data ); |
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375 }, |
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376 error: function() { |
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377 response( [] ); |
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378 } |
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379 }); |
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380 }; |
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381 } else { |
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382 this.source = this.options.source; |
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383 } |
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384 }, |
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385 |
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386 _searchTimeout: function( event ) { |
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387 clearTimeout( this.searching ); |
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388 this.searching = this._delay(function() { |
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389 // only search if the value has changed |
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390 if ( this.term !== this._value() ) { |
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391 this.selectedItem = null; |
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392 this.search( null, event ); |
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393 } |
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394 }, this.options.delay ); |
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395 }, |
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396 |
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397 search: function( value, event ) { |
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398 value = value != null ? value : this._value(); |
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399 |
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400 // always save the actual value, not the one passed as an argument |
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401 this.term = this._value(); |
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402 |
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403 if ( value.length < this.options.minLength ) { |
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404 return this.close( event ); |
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405 } |
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406 |
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407 if ( this._trigger( "search", event ) === false ) { |
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408 return; |
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409 } |
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410 |
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411 return this._search( value ); |
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412 }, |
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413 |
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414 _search: function( value ) { |
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415 this.pending++; |
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416 this.element.addClass( "ui-autocomplete-loading" ); |
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417 this.cancelSearch = false; |
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418 |
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419 this.source( { term: value }, this._response() ); |
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420 }, |
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421 |
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422 _response: function() { |
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423 var that = this, |
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424 index = ++requestIndex; |
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425 |
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426 return function( content ) { |
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427 if ( index === requestIndex ) { |
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428 that.__response( content ); |
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429 } |
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430 |
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431 that.pending--; |
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432 if ( !that.pending ) { |
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433 that.element.removeClass( "ui-autocomplete-loading" ); |
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434 } |
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435 }; |
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436 }, |
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437 |
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438 __response: function( content ) { |
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439 if ( content ) { |
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440 content = this._normalize( content ); |
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441 } |
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442 this._trigger( "response", null, { content: content } ); |
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443 if ( !this.options.disabled && content && content.length && !this.cancelSearch ) { |
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444 this._suggest( content ); |
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445 this._trigger( "open" ); |
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446 } else { |
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447 // use ._close() instead of .close() so we don't cancel future searches |
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448 this._close(); |
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449 } |
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450 }, |
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451 |
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452 close: function( event ) { |
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453 this.cancelSearch = true; |
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454 this._close( event ); |
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455 }, |
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456 |
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457 _close: function( event ) { |
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458 if ( this.menu.element.is( ":visible" ) ) { |
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459 this.menu.element.hide(); |
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460 this.menu.blur(); |
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461 this.isNewMenu = true; |
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462 this._trigger( "close", event ); |
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463 } |
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464 }, |
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465 |
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466 _change: function( event ) { |
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467 if ( this.previous !== this._value() ) { |
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468 this._trigger( "change", event, { item: this.selectedItem } ); |
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469 } |
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470 }, |
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471 |
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472 _normalize: function( items ) { |
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473 // assume all items have the right format when the first item is complete |
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474 if ( items.length && items[0].label && items[0].value ) { |
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475 return items; |
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476 } |
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477 return $.map( items, function( item ) { |
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478 if ( typeof item === "string" ) { |
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479 return { |
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480 label: item, |
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481 value: item |
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482 }; |
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483 } |
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484 return $.extend({ |
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485 label: item.label || item.value, |
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486 value: item.value || item.label |
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487 }, item ); |
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488 }); |
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489 }, |
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490 |
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491 _suggest: function( items ) { |
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492 var ul = this.menu.element.empty(); |
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493 this._renderMenu( ul, items ); |
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494 this.isNewMenu = true; |
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495 this.menu.refresh(); |
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496 |
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497 // size and position menu |
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498 ul.show(); |
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499 this._resizeMenu(); |
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500 ul.position( $.extend({ |
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501 of: this.element |
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502 }, this.options.position )); |
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503 |
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504 if ( this.options.autoFocus ) { |
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505 this.menu.next(); |
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506 } |
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507 }, |
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508 |
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509 _resizeMenu: function() { |
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510 var ul = this.menu.element; |
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511 ul.outerWidth( Math.max( |
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512 // Firefox wraps long text (possibly a rounding bug) |
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513 // so we add 1px to avoid the wrapping (#7513) |
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514 ul.width( "" ).outerWidth() + 1, |
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515 this.element.outerWidth() |
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516 ) ); |
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517 }, |
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518 |
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519 _renderMenu: function( ul, items ) { |
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520 var that = this; |
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521 $.each( items, function( index, item ) { |
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522 that._renderItemData( ul, item ); |
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523 }); |
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524 }, |
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525 |
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526 _renderItemData: function( ul, item ) { |
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527 return this._renderItem( ul, item ).data( "ui-autocomplete-item", item ); |
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528 }, |
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529 |
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530 _renderItem: function( ul, item ) { |
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531 return $( "<li>" ) |
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532 .append( $( "<a>" ).text( item.label ) ) |
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533 .appendTo( ul ); |
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534 }, |
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535 |
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536 _move: function( direction, event ) { |
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537 if ( !this.menu.element.is( ":visible" ) ) { |
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538 this.search( null, event ); |
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539 return; |
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540 } |
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541 if ( this.menu.isFirstItem() && /^previous/.test( direction ) || |
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542 this.menu.isLastItem() && /^next/.test( direction ) ) { |
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543 this._value( this.term ); |
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544 this.menu.blur(); |
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545 return; |
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546 } |
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547 this.menu[ direction ]( event ); |
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548 }, |
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549 |
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550 widget: function() { |
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551 return this.menu.element; |
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552 }, |
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553 |
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554 _value: function() { |
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555 return this.valueMethod.apply( this.element, arguments ); |
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556 }, |
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557 |
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558 _keyEvent: function( keyEvent, event ) { |
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559 if ( !this.isMultiLine || this.menu.element.is( ":visible" ) ) { |
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560 this._move( keyEvent, event ); |
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561 |
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562 // prevents moving cursor to beginning/end of the text field in some browsers |
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563 event.preventDefault(); |
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564 } |
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565 } |
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566 }); |
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567 |
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568 $.extend( $.ui.autocomplete, { |
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569 escapeRegex: function( value ) { |
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570 return value.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&"); |
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571 }, |
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572 filter: function(array, term) { |
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573 var matcher = new RegExp( $.ui.autocomplete.escapeRegex(term), "i" ); |
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574 return $.grep( array, function(value) { |
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575 return matcher.test( value.label || value.value || value ); |
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576 }); |
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577 } |
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578 }); |
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579 |
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580 |
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581 // live region extension, adding a `messages` option |
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582 // NOTE: This is an experimental API. We are still investigating |
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583 // a full solution for string manipulation and internationalization. |
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584 $.widget( "ui.autocomplete", $.ui.autocomplete, { |
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585 options: { |
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586 messages: { |
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587 noResults: "No search results.", |
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588 results: function( amount ) { |
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589 return amount + ( amount > 1 ? " results are" : " result is" ) + |
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590 " available, use up and down arrow keys to navigate."; |
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591 } |
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592 } |
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593 }, |
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594 |
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595 __response: function( content ) { |
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596 var message; |
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597 this._superApply( arguments ); |
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598 if ( this.options.disabled || this.cancelSearch ) { |
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599 return; |
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600 } |
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601 if ( content && content.length ) { |
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602 message = this.options.messages.results( content.length ); |
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603 } else { |
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604 message = this.options.messages.noResults; |
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605 } |
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606 this.liveRegion.text( message ); |
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607 } |
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608 }); |
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609 |
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610 }( jQuery )); |