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1 /*!
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2 * jQuery UI Mouse 1.10.4
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3 * http://jqueryui.com
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4 *
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5 * Copyright 2014 jQuery Foundation and other contributors
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6 * Released under the MIT license.
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7 * http://jquery.org/license
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8 *
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9 * http://api.jqueryui.com/mouse/
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10 *
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11 * Depends:
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12 * jquery.ui.widget.js
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13 */
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14 (function( $, undefined ) {
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15
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16 var mouseHandled = false;
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17 $( document ).mouseup( function() {
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18 mouseHandled = false;
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19 });
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20
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21 $.widget("ui.mouse", {
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22 version: "1.10.4",
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23 options: {
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24 cancel: "input,textarea,button,select,option",
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25 distance: 1,
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26 delay: 0
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27 },
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28 _mouseInit: function() {
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29 var that = this;
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30
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31 this.element
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32 .bind("mousedown."+this.widgetName, function(event) {
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33 return that._mouseDown(event);
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34 })
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35 .bind("click."+this.widgetName, function(event) {
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36 if (true === $.data(event.target, that.widgetName + ".preventClickEvent")) {
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37 $.removeData(event.target, that.widgetName + ".preventClickEvent");
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38 event.stopImmediatePropagation();
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39 return false;
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40 }
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41 });
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42
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43 this.started = false;
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44 },
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45
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46 // TODO: make sure destroying one instance of mouse doesn't mess with
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47 // other instances of mouse
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48 _mouseDestroy: function() {
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49 this.element.unbind("."+this.widgetName);
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50 if ( this._mouseMoveDelegate ) {
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51 $(document)
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52 .unbind("mousemove."+this.widgetName, this._mouseMoveDelegate)
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53 .unbind("mouseup."+this.widgetName, this._mouseUpDelegate);
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54 }
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55 },
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56
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57 _mouseDown: function(event) {
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58 // don't let more than one widget handle mouseStart
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59 if( mouseHandled ) { return; }
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60
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61 // we may have missed mouseup (out of window)
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62 (this._mouseStarted && this._mouseUp(event));
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63
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64 this._mouseDownEvent = event;
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65
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66 var that = this,
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67 btnIsLeft = (event.which === 1),
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68 // event.target.nodeName works around a bug in IE 8 with
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69 // disabled inputs (#7620)
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70 elIsCancel = (typeof this.options.cancel === "string" && event.target.nodeName ? $(event.target).closest(this.options.cancel).length : false);
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71 if (!btnIsLeft || elIsCancel || !this._mouseCapture(event)) {
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72 return true;
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73 }
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74
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75 this.mouseDelayMet = !this.options.delay;
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76 if (!this.mouseDelayMet) {
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77 this._mouseDelayTimer = setTimeout(function() {
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78 that.mouseDelayMet = true;
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79 }, this.options.delay);
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80 }
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81
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82 if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
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83 this._mouseStarted = (this._mouseStart(event) !== false);
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84 if (!this._mouseStarted) {
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85 event.preventDefault();
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86 return true;
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87 }
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88 }
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89
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90 // Click event may never have fired (Gecko & Opera)
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91 if (true === $.data(event.target, this.widgetName + ".preventClickEvent")) {
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92 $.removeData(event.target, this.widgetName + ".preventClickEvent");
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93 }
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94
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95 // these delegates are required to keep context
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96 this._mouseMoveDelegate = function(event) {
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97 return that._mouseMove(event);
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98 };
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99 this._mouseUpDelegate = function(event) {
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100 return that._mouseUp(event);
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101 };
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102 $(document)
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103 .bind("mousemove."+this.widgetName, this._mouseMoveDelegate)
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104 .bind("mouseup."+this.widgetName, this._mouseUpDelegate);
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105
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106 event.preventDefault();
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107
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108 mouseHandled = true;
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109 return true;
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110 },
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111
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112 _mouseMove: function(event) {
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113 // IE mouseup check - mouseup happened when mouse was out of window
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114 if ($.ui.ie && ( !document.documentMode || document.documentMode < 9 ) && !event.button) {
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115 return this._mouseUp(event);
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116 }
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117
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118 if (this._mouseStarted) {
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119 this._mouseDrag(event);
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120 return event.preventDefault();
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121 }
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122
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123 if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
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124 this._mouseStarted =
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125 (this._mouseStart(this._mouseDownEvent, event) !== false);
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126 (this._mouseStarted ? this._mouseDrag(event) : this._mouseUp(event));
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127 }
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128
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129 return !this._mouseStarted;
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130 },
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131
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132 _mouseUp: function(event) {
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133 $(document)
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134 .unbind("mousemove."+this.widgetName, this._mouseMoveDelegate)
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135 .unbind("mouseup."+this.widgetName, this._mouseUpDelegate);
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136
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137 if (this._mouseStarted) {
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138 this._mouseStarted = false;
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139
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140 if (event.target === this._mouseDownEvent.target) {
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141 $.data(event.target, this.widgetName + ".preventClickEvent", true);
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142 }
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143
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144 this._mouseStop(event);
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145 }
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146
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147 return false;
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148 },
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149
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150 _mouseDistanceMet: function(event) {
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151 return (Math.max(
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152 Math.abs(this._mouseDownEvent.pageX - event.pageX),
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153 Math.abs(this._mouseDownEvent.pageY - event.pageY)
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154 ) >= this.options.distance
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155 );
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156 },
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157
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158 _mouseDelayMet: function(/* event */) {
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159 return this.mouseDelayMet;
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160 },
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161
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162 // These are placeholder methods, to be overriden by extending plugin
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163 _mouseStart: function(/* event */) {},
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164 _mouseDrag: function(/* event */) {},
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165 _mouseStop: function(/* event */) {},
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166 _mouseCapture: function(/* event */) { return true; }
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167 });
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168
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169 })(jQuery);
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