1 /*! |
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2 * jQuery UI Menu 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/menu/ |
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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 */ |
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16 (function( $, undefined ) { |
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17 |
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18 $.widget( "ui.menu", { |
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19 version: "1.10.3", |
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20 defaultElement: "<ul>", |
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21 delay: 300, |
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22 options: { |
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23 icons: { |
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24 submenu: "ui-icon-carat-1-e" |
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25 }, |
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26 menus: "ul", |
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27 position: { |
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28 my: "left top", |
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29 at: "right top" |
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30 }, |
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31 role: "menu", |
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32 |
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33 // callbacks |
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34 blur: null, |
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35 focus: null, |
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36 select: null |
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37 }, |
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38 |
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39 _create: function() { |
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40 this.activeMenu = this.element; |
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41 // flag used to prevent firing of the click handler |
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42 // as the event bubbles up through nested menus |
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43 this.mouseHandled = false; |
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44 this.element |
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45 .uniqueId() |
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46 .addClass( "ui-menu ui-widget ui-widget-content ui-corner-all" ) |
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47 .toggleClass( "ui-menu-icons", !!this.element.find( ".ui-icon" ).length ) |
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48 .attr({ |
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49 role: this.options.role, |
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50 tabIndex: 0 |
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51 }) |
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52 // need to catch all clicks on disabled menu |
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53 // not possible through _on |
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54 .bind( "click" + this.eventNamespace, $.proxy(function( event ) { |
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55 if ( this.options.disabled ) { |
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56 event.preventDefault(); |
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57 } |
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58 }, this )); |
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59 |
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60 if ( this.options.disabled ) { |
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61 this.element |
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62 .addClass( "ui-state-disabled" ) |
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63 .attr( "aria-disabled", "true" ); |
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64 } |
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65 |
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66 this._on({ |
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67 // Prevent focus from sticking to links inside menu after clicking |
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68 // them (focus should always stay on UL during navigation). |
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69 "mousedown .ui-menu-item > a": function( event ) { |
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70 event.preventDefault(); |
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71 }, |
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72 "click .ui-state-disabled > a": function( event ) { |
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73 event.preventDefault(); |
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74 }, |
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75 "click .ui-menu-item:has(a)": function( event ) { |
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76 var target = $( event.target ).closest( ".ui-menu-item" ); |
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77 if ( !this.mouseHandled && target.not( ".ui-state-disabled" ).length ) { |
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78 this.mouseHandled = true; |
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79 |
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80 this.select( event ); |
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81 // Open submenu on click |
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82 if ( target.has( ".ui-menu" ).length ) { |
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83 this.expand( event ); |
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84 } else if ( !this.element.is( ":focus" ) ) { |
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85 // Redirect focus to the menu |
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86 this.element.trigger( "focus", [ true ] ); |
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87 |
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88 // If the active item is on the top level, let it stay active. |
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89 // Otherwise, blur the active item since it is no longer visible. |
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90 if ( this.active && this.active.parents( ".ui-menu" ).length === 1 ) { |
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91 clearTimeout( this.timer ); |
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92 } |
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93 } |
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94 } |
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95 }, |
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96 "mouseenter .ui-menu-item": function( event ) { |
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97 var target = $( event.currentTarget ); |
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98 // Remove ui-state-active class from siblings of the newly focused menu item |
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99 // to avoid a jump caused by adjacent elements both having a class with a border |
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100 target.siblings().children( ".ui-state-active" ).removeClass( "ui-state-active" ); |
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101 this.focus( event, target ); |
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102 }, |
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103 mouseleave: "collapseAll", |
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104 "mouseleave .ui-menu": "collapseAll", |
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105 focus: function( event, keepActiveItem ) { |
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106 // If there's already an active item, keep it active |
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107 // If not, activate the first item |
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108 var item = this.active || this.element.children( ".ui-menu-item" ).eq( 0 ); |
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109 |
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110 if ( !keepActiveItem ) { |
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111 this.focus( event, item ); |
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112 } |
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113 }, |
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114 blur: function( event ) { |
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115 this._delay(function() { |
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116 if ( !$.contains( this.element[0], this.document[0].activeElement ) ) { |
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117 this.collapseAll( event ); |
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118 } |
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119 }); |
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120 }, |
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121 keydown: "_keydown" |
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122 }); |
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123 |
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124 this.refresh(); |
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125 |
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126 // Clicks outside of a menu collapse any open menus |
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127 this._on( this.document, { |
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128 click: function( event ) { |
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129 if ( !$( event.target ).closest( ".ui-menu" ).length ) { |
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130 this.collapseAll( event ); |
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131 } |
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132 |
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133 // Reset the mouseHandled flag |
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134 this.mouseHandled = false; |
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135 } |
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136 }); |
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137 }, |
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138 |
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139 _destroy: function() { |
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140 // Destroy (sub)menus |
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141 this.element |
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142 .removeAttr( "aria-activedescendant" ) |
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143 .find( ".ui-menu" ).addBack() |
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144 .removeClass( "ui-menu ui-widget ui-widget-content ui-corner-all ui-menu-icons" ) |
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145 .removeAttr( "role" ) |
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146 .removeAttr( "tabIndex" ) |
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147 .removeAttr( "aria-labelledby" ) |
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148 .removeAttr( "aria-expanded" ) |
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149 .removeAttr( "aria-hidden" ) |
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150 .removeAttr( "aria-disabled" ) |
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151 .removeUniqueId() |
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152 .show(); |
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153 |
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154 // Destroy menu items |
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155 this.element.find( ".ui-menu-item" ) |
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156 .removeClass( "ui-menu-item" ) |
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157 .removeAttr( "role" ) |
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158 .removeAttr( "aria-disabled" ) |
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159 .children( "a" ) |
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160 .removeUniqueId() |
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161 .removeClass( "ui-corner-all ui-state-hover" ) |
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162 .removeAttr( "tabIndex" ) |
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163 .removeAttr( "role" ) |
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164 .removeAttr( "aria-haspopup" ) |
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165 .children().each( function() { |
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166 var elem = $( this ); |
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167 if ( elem.data( "ui-menu-submenu-carat" ) ) { |
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168 elem.remove(); |
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169 } |
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170 }); |
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171 |
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172 // Destroy menu dividers |
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173 this.element.find( ".ui-menu-divider" ).removeClass( "ui-menu-divider ui-widget-content" ); |
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174 }, |
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175 |
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176 _keydown: function( event ) { |
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177 /*jshint maxcomplexity:20*/ |
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178 var match, prev, character, skip, regex, |
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179 preventDefault = true; |
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180 |
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181 function escape( value ) { |
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182 return value.replace( /[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&" ); |
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183 } |
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184 |
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185 switch ( event.keyCode ) { |
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186 case $.ui.keyCode.PAGE_UP: |
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187 this.previousPage( event ); |
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188 break; |
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189 case $.ui.keyCode.PAGE_DOWN: |
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190 this.nextPage( event ); |
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191 break; |
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192 case $.ui.keyCode.HOME: |
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193 this._move( "first", "first", event ); |
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194 break; |
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195 case $.ui.keyCode.END: |
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196 this._move( "last", "last", event ); |
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197 break; |
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198 case $.ui.keyCode.UP: |
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199 this.previous( event ); |
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200 break; |
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201 case $.ui.keyCode.DOWN: |
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202 this.next( event ); |
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203 break; |
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204 case $.ui.keyCode.LEFT: |
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205 this.collapse( event ); |
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206 break; |
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207 case $.ui.keyCode.RIGHT: |
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208 if ( this.active && !this.active.is( ".ui-state-disabled" ) ) { |
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209 this.expand( event ); |
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210 } |
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211 break; |
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212 case $.ui.keyCode.ENTER: |
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213 case $.ui.keyCode.SPACE: |
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214 this._activate( event ); |
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215 break; |
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216 case $.ui.keyCode.ESCAPE: |
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217 this.collapse( event ); |
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218 break; |
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219 default: |
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220 preventDefault = false; |
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221 prev = this.previousFilter || ""; |
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222 character = String.fromCharCode( event.keyCode ); |
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223 skip = false; |
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224 |
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225 clearTimeout( this.filterTimer ); |
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226 |
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227 if ( character === prev ) { |
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228 skip = true; |
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229 } else { |
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230 character = prev + character; |
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231 } |
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232 |
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233 regex = new RegExp( "^" + escape( character ), "i" ); |
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234 match = this.activeMenu.children( ".ui-menu-item" ).filter(function() { |
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235 return regex.test( $( this ).children( "a" ).text() ); |
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236 }); |
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237 match = skip && match.index( this.active.next() ) !== -1 ? |
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238 this.active.nextAll( ".ui-menu-item" ) : |
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239 match; |
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240 |
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241 // If no matches on the current filter, reset to the last character pressed |
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242 // to move down the menu to the first item that starts with that character |
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243 if ( !match.length ) { |
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244 character = String.fromCharCode( event.keyCode ); |
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245 regex = new RegExp( "^" + escape( character ), "i" ); |
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246 match = this.activeMenu.children( ".ui-menu-item" ).filter(function() { |
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247 return regex.test( $( this ).children( "a" ).text() ); |
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248 }); |
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249 } |
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250 |
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251 if ( match.length ) { |
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252 this.focus( event, match ); |
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253 if ( match.length > 1 ) { |
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254 this.previousFilter = character; |
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255 this.filterTimer = this._delay(function() { |
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256 delete this.previousFilter; |
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257 }, 1000 ); |
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258 } else { |
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259 delete this.previousFilter; |
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260 } |
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261 } else { |
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262 delete this.previousFilter; |
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263 } |
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264 } |
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265 |
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266 if ( preventDefault ) { |
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267 event.preventDefault(); |
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268 } |
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269 }, |
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270 |
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271 _activate: function( event ) { |
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272 if ( !this.active.is( ".ui-state-disabled" ) ) { |
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273 if ( this.active.children( "a[aria-haspopup='true']" ).length ) { |
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274 this.expand( event ); |
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275 } else { |
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276 this.select( event ); |
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277 } |
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278 } |
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279 }, |
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280 |
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281 refresh: function() { |
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282 var menus, |
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283 icon = this.options.icons.submenu, |
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284 submenus = this.element.find( this.options.menus ); |
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285 |
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286 // Initialize nested menus |
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287 submenus.filter( ":not(.ui-menu)" ) |
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288 .addClass( "ui-menu ui-widget ui-widget-content ui-corner-all" ) |
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289 .hide() |
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290 .attr({ |
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291 role: this.options.role, |
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292 "aria-hidden": "true", |
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293 "aria-expanded": "false" |
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294 }) |
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295 .each(function() { |
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296 var menu = $( this ), |
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297 item = menu.prev( "a" ), |
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298 submenuCarat = $( "<span>" ) |
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299 .addClass( "ui-menu-icon ui-icon " + icon ) |
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300 .data( "ui-menu-submenu-carat", true ); |
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301 |
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302 item |
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303 .attr( "aria-haspopup", "true" ) |
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304 .prepend( submenuCarat ); |
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305 menu.attr( "aria-labelledby", item.attr( "id" ) ); |
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306 }); |
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307 |
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308 menus = submenus.add( this.element ); |
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309 |
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310 // Don't refresh list items that are already adapted |
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311 menus.children( ":not(.ui-menu-item):has(a)" ) |
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312 .addClass( "ui-menu-item" ) |
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313 .attr( "role", "presentation" ) |
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314 .children( "a" ) |
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315 .uniqueId() |
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316 .addClass( "ui-corner-all" ) |
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317 .attr({ |
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318 tabIndex: -1, |
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319 role: this._itemRole() |
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320 }); |
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321 |
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322 // Initialize unlinked menu-items containing spaces and/or dashes only as dividers |
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323 menus.children( ":not(.ui-menu-item)" ).each(function() { |
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324 var item = $( this ); |
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325 // hyphen, em dash, en dash |
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326 if ( !/[^\-\u2014\u2013\s]/.test( item.text() ) ) { |
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327 item.addClass( "ui-widget-content ui-menu-divider" ); |
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328 } |
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329 }); |
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330 |
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331 // Add aria-disabled attribute to any disabled menu item |
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332 menus.children( ".ui-state-disabled" ).attr( "aria-disabled", "true" ); |
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333 |
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334 // If the active item has been removed, blur the menu |
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335 if ( this.active && !$.contains( this.element[ 0 ], this.active[ 0 ] ) ) { |
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336 this.blur(); |
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337 } |
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338 }, |
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339 |
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340 _itemRole: function() { |
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341 return { |
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342 menu: "menuitem", |
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343 listbox: "option" |
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344 }[ this.options.role ]; |
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345 }, |
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346 |
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347 _setOption: function( key, value ) { |
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348 if ( key === "icons" ) { |
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349 this.element.find( ".ui-menu-icon" ) |
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350 .removeClass( this.options.icons.submenu ) |
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351 .addClass( value.submenu ); |
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352 } |
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353 this._super( key, value ); |
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354 }, |
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355 |
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356 focus: function( event, item ) { |
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357 var nested, focused; |
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358 this.blur( event, event && event.type === "focus" ); |
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359 |
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360 this._scrollIntoView( item ); |
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361 |
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362 this.active = item.first(); |
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363 focused = this.active.children( "a" ).addClass( "ui-state-focus" ); |
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364 // Only update aria-activedescendant if there's a role |
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365 // otherwise we assume focus is managed elsewhere |
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366 if ( this.options.role ) { |
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367 this.element.attr( "aria-activedescendant", focused.attr( "id" ) ); |
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368 } |
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369 |
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370 // Highlight active parent menu item, if any |
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371 this.active |
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372 .parent() |
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373 .closest( ".ui-menu-item" ) |
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374 .children( "a:first" ) |
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375 .addClass( "ui-state-active" ); |
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376 |
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377 if ( event && event.type === "keydown" ) { |
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378 this._close(); |
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379 } else { |
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380 this.timer = this._delay(function() { |
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381 this._close(); |
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382 }, this.delay ); |
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383 } |
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384 |
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385 nested = item.children( ".ui-menu" ); |
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386 if ( nested.length && ( /^mouse/.test( event.type ) ) ) { |
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387 this._startOpening(nested); |
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388 } |
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389 this.activeMenu = item.parent(); |
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390 |
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391 this._trigger( "focus", event, { item: item } ); |
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392 }, |
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393 |
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394 _scrollIntoView: function( item ) { |
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395 var borderTop, paddingTop, offset, scroll, elementHeight, itemHeight; |
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396 if ( this._hasScroll() ) { |
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397 borderTop = parseFloat( $.css( this.activeMenu[0], "borderTopWidth" ) ) || 0; |
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398 paddingTop = parseFloat( $.css( this.activeMenu[0], "paddingTop" ) ) || 0; |
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399 offset = item.offset().top - this.activeMenu.offset().top - borderTop - paddingTop; |
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400 scroll = this.activeMenu.scrollTop(); |
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401 elementHeight = this.activeMenu.height(); |
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402 itemHeight = item.height(); |
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403 |
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404 if ( offset < 0 ) { |
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405 this.activeMenu.scrollTop( scroll + offset ); |
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406 } else if ( offset + itemHeight > elementHeight ) { |
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407 this.activeMenu.scrollTop( scroll + offset - elementHeight + itemHeight ); |
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408 } |
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409 } |
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410 }, |
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411 |
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412 blur: function( event, fromFocus ) { |
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413 if ( !fromFocus ) { |
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414 clearTimeout( this.timer ); |
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415 } |
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416 |
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417 if ( !this.active ) { |
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418 return; |
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419 } |
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420 |
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421 this.active.children( "a" ).removeClass( "ui-state-focus" ); |
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422 this.active = null; |
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423 |
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424 this._trigger( "blur", event, { item: this.active } ); |
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425 }, |
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426 |
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427 _startOpening: function( submenu ) { |
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428 clearTimeout( this.timer ); |
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429 |
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430 // Don't open if already open fixes a Firefox bug that caused a .5 pixel |
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431 // shift in the submenu position when mousing over the carat icon |
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432 if ( submenu.attr( "aria-hidden" ) !== "true" ) { |
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433 return; |
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434 } |
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435 |
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436 this.timer = this._delay(function() { |
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437 this._close(); |
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438 this._open( submenu ); |
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439 }, this.delay ); |
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440 }, |
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441 |
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442 _open: function( submenu ) { |
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443 var position = $.extend({ |
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444 of: this.active |
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445 }, this.options.position ); |
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446 |
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447 clearTimeout( this.timer ); |
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448 this.element.find( ".ui-menu" ).not( submenu.parents( ".ui-menu" ) ) |
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449 .hide() |
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450 .attr( "aria-hidden", "true" ); |
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451 |
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452 submenu |
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453 .show() |
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454 .removeAttr( "aria-hidden" ) |
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455 .attr( "aria-expanded", "true" ) |
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456 .position( position ); |
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457 }, |
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458 |
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459 collapseAll: function( event, all ) { |
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460 clearTimeout( this.timer ); |
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461 this.timer = this._delay(function() { |
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462 // If we were passed an event, look for the submenu that contains the event |
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463 var currentMenu = all ? this.element : |
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464 $( event && event.target ).closest( this.element.find( ".ui-menu" ) ); |
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465 |
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466 // If we found no valid submenu ancestor, use the main menu to close all sub menus anyway |
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467 if ( !currentMenu.length ) { |
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468 currentMenu = this.element; |
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469 } |
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470 |
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471 this._close( currentMenu ); |
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472 |
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473 this.blur( event ); |
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474 this.activeMenu = currentMenu; |
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475 }, this.delay ); |
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476 }, |
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477 |
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478 // With no arguments, closes the currently active menu - if nothing is active |
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479 // it closes all menus. If passed an argument, it will search for menus BELOW |
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480 _close: function( startMenu ) { |
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481 if ( !startMenu ) { |
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482 startMenu = this.active ? this.active.parent() : this.element; |
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483 } |
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484 |
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485 startMenu |
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486 .find( ".ui-menu" ) |
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487 .hide() |
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488 .attr( "aria-hidden", "true" ) |
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489 .attr( "aria-expanded", "false" ) |
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490 .end() |
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491 .find( "a.ui-state-active" ) |
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492 .removeClass( "ui-state-active" ); |
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493 }, |
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494 |
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495 collapse: function( event ) { |
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496 var newItem = this.active && |
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497 this.active.parent().closest( ".ui-menu-item", this.element ); |
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498 if ( newItem && newItem.length ) { |
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499 this._close(); |
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500 this.focus( event, newItem ); |
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501 } |
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502 }, |
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503 |
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504 expand: function( event ) { |
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505 var newItem = this.active && |
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506 this.active |
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507 .children( ".ui-menu " ) |
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508 .children( ".ui-menu-item" ) |
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509 .first(); |
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510 |
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511 if ( newItem && newItem.length ) { |
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512 this._open( newItem.parent() ); |
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513 |
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514 // Delay so Firefox will not hide activedescendant change in expanding submenu from AT |
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515 this._delay(function() { |
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516 this.focus( event, newItem ); |
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517 }); |
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518 } |
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519 }, |
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520 |
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521 next: function( event ) { |
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522 this._move( "next", "first", event ); |
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523 }, |
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524 |
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525 previous: function( event ) { |
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526 this._move( "prev", "last", event ); |
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527 }, |
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528 |
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529 isFirstItem: function() { |
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530 return this.active && !this.active.prevAll( ".ui-menu-item" ).length; |
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531 }, |
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532 |
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533 isLastItem: function() { |
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534 return this.active && !this.active.nextAll( ".ui-menu-item" ).length; |
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535 }, |
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536 |
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537 _move: function( direction, filter, event ) { |
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538 var next; |
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539 if ( this.active ) { |
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540 if ( direction === "first" || direction === "last" ) { |
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541 next = this.active |
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542 [ direction === "first" ? "prevAll" : "nextAll" ]( ".ui-menu-item" ) |
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543 .eq( -1 ); |
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544 } else { |
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545 next = this.active |
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546 [ direction + "All" ]( ".ui-menu-item" ) |
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547 .eq( 0 ); |
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548 } |
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549 } |
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550 if ( !next || !next.length || !this.active ) { |
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551 next = this.activeMenu.children( ".ui-menu-item" )[ filter ](); |
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552 } |
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553 |
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554 this.focus( event, next ); |
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555 }, |
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556 |
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557 nextPage: function( event ) { |
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558 var item, base, height; |
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559 |
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560 if ( !this.active ) { |
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561 this.next( event ); |
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562 return; |
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563 } |
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564 if ( this.isLastItem() ) { |
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565 return; |
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566 } |
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567 if ( this._hasScroll() ) { |
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568 base = this.active.offset().top; |
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569 height = this.element.height(); |
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570 this.active.nextAll( ".ui-menu-item" ).each(function() { |
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571 item = $( this ); |
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572 return item.offset().top - base - height < 0; |
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573 }); |
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574 |
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575 this.focus( event, item ); |
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576 } else { |
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577 this.focus( event, this.activeMenu.children( ".ui-menu-item" ) |
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578 [ !this.active ? "first" : "last" ]() ); |
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579 } |
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580 }, |
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581 |
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582 previousPage: function( event ) { |
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583 var item, base, height; |
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584 if ( !this.active ) { |
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585 this.next( event ); |
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586 return; |
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587 } |
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588 if ( this.isFirstItem() ) { |
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589 return; |
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590 } |
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591 if ( this._hasScroll() ) { |
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592 base = this.active.offset().top; |
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593 height = this.element.height(); |
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594 this.active.prevAll( ".ui-menu-item" ).each(function() { |
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595 item = $( this ); |
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596 return item.offset().top - base + height > 0; |
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597 }); |
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598 |
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599 this.focus( event, item ); |
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600 } else { |
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601 this.focus( event, this.activeMenu.children( ".ui-menu-item" ).first() ); |
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602 } |
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603 }, |
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604 |
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605 _hasScroll: function() { |
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606 return this.element.outerHeight() < this.element.prop( "scrollHeight" ); |
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607 }, |
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608 |
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609 select: function( event ) { |
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610 // TODO: It should never be possible to not have an active item at this |
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611 // point, but the tests don't trigger mouseenter before click. |
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612 this.active = this.active || $( event.target ).closest( ".ui-menu-item" ); |
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613 var ui = { item: this.active }; |
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614 if ( !this.active.has( ".ui-menu" ).length ) { |
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615 this.collapseAll( event, true ); |
|
616 } |
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617 this._trigger( "select", event, ui ); |
|
618 } |
|
619 }); |
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620 |
|
621 }( jQuery )); |
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