1 /*! |
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2 * jQuery UI Droppable 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/droppable/ |
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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.mouse.js |
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15 * jquery.ui.draggable.js |
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16 */ |
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17 (function( $, undefined ) { |
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18 |
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19 function isOverAxis( x, reference, size ) { |
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20 return ( x > reference ) && ( x < ( reference + size ) ); |
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21 } |
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22 |
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23 $.widget("ui.droppable", { |
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24 version: "1.10.3", |
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25 widgetEventPrefix: "drop", |
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26 options: { |
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27 accept: "*", |
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28 activeClass: false, |
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29 addClasses: true, |
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30 greedy: false, |
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31 hoverClass: false, |
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32 scope: "default", |
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33 tolerance: "intersect", |
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34 |
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35 // callbacks |
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36 activate: null, |
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37 deactivate: null, |
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38 drop: null, |
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39 out: null, |
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40 over: null |
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41 }, |
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42 _create: function() { |
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43 |
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44 var o = this.options, |
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45 accept = o.accept; |
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46 |
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47 this.isover = false; |
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48 this.isout = true; |
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49 |
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50 this.accept = $.isFunction(accept) ? accept : function(d) { |
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51 return d.is(accept); |
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52 }; |
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53 |
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54 //Store the droppable's proportions |
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55 this.proportions = { width: this.element[0].offsetWidth, height: this.element[0].offsetHeight }; |
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56 |
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57 // Add the reference and positions to the manager |
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58 $.ui.ddmanager.droppables[o.scope] = $.ui.ddmanager.droppables[o.scope] || []; |
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59 $.ui.ddmanager.droppables[o.scope].push(this); |
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60 |
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61 (o.addClasses && this.element.addClass("ui-droppable")); |
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62 |
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63 }, |
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64 |
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65 _destroy: function() { |
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66 var i = 0, |
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67 drop = $.ui.ddmanager.droppables[this.options.scope]; |
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68 |
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69 for ( ; i < drop.length; i++ ) { |
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70 if ( drop[i] === this ) { |
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71 drop.splice(i, 1); |
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72 } |
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73 } |
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74 |
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75 this.element.removeClass("ui-droppable ui-droppable-disabled"); |
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76 }, |
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77 |
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78 _setOption: function(key, value) { |
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79 |
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80 if(key === "accept") { |
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81 this.accept = $.isFunction(value) ? value : function(d) { |
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82 return d.is(value); |
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83 }; |
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84 } |
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85 $.Widget.prototype._setOption.apply(this, arguments); |
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86 }, |
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87 |
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88 _activate: function(event) { |
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89 var draggable = $.ui.ddmanager.current; |
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90 if(this.options.activeClass) { |
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91 this.element.addClass(this.options.activeClass); |
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92 } |
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93 if(draggable){ |
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94 this._trigger("activate", event, this.ui(draggable)); |
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95 } |
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96 }, |
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97 |
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98 _deactivate: function(event) { |
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99 var draggable = $.ui.ddmanager.current; |
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100 if(this.options.activeClass) { |
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101 this.element.removeClass(this.options.activeClass); |
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102 } |
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103 if(draggable){ |
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104 this._trigger("deactivate", event, this.ui(draggable)); |
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105 } |
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106 }, |
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107 |
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108 _over: function(event) { |
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109 |
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110 var draggable = $.ui.ddmanager.current; |
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111 |
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112 // Bail if draggable and droppable are same element |
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113 if (!draggable || (draggable.currentItem || draggable.element)[0] === this.element[0]) { |
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114 return; |
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115 } |
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116 |
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117 if (this.accept.call(this.element[0],(draggable.currentItem || draggable.element))) { |
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118 if(this.options.hoverClass) { |
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119 this.element.addClass(this.options.hoverClass); |
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120 } |
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121 this._trigger("over", event, this.ui(draggable)); |
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122 } |
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123 |
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124 }, |
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125 |
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126 _out: function(event) { |
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127 |
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128 var draggable = $.ui.ddmanager.current; |
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129 |
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130 // Bail if draggable and droppable are same element |
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131 if (!draggable || (draggable.currentItem || draggable.element)[0] === this.element[0]) { |
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132 return; |
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133 } |
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134 |
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135 if (this.accept.call(this.element[0],(draggable.currentItem || draggable.element))) { |
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136 if(this.options.hoverClass) { |
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137 this.element.removeClass(this.options.hoverClass); |
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138 } |
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139 this._trigger("out", event, this.ui(draggable)); |
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140 } |
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141 |
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142 }, |
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143 |
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144 _drop: function(event,custom) { |
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145 |
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146 var draggable = custom || $.ui.ddmanager.current, |
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147 childrenIntersection = false; |
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148 |
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149 // Bail if draggable and droppable are same element |
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150 if (!draggable || (draggable.currentItem || draggable.element)[0] === this.element[0]) { |
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151 return false; |
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152 } |
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153 |
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154 this.element.find(":data(ui-droppable)").not(".ui-draggable-dragging").each(function() { |
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155 var inst = $.data(this, "ui-droppable"); |
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156 if( |
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157 inst.options.greedy && |
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158 !inst.options.disabled && |
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159 inst.options.scope === draggable.options.scope && |
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160 inst.accept.call(inst.element[0], (draggable.currentItem || draggable.element)) && |
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161 $.ui.intersect(draggable, $.extend(inst, { offset: inst.element.offset() }), inst.options.tolerance) |
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162 ) { childrenIntersection = true; return false; } |
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163 }); |
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164 if(childrenIntersection) { |
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165 return false; |
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166 } |
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167 |
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168 if(this.accept.call(this.element[0],(draggable.currentItem || draggable.element))) { |
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169 if(this.options.activeClass) { |
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170 this.element.removeClass(this.options.activeClass); |
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171 } |
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172 if(this.options.hoverClass) { |
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173 this.element.removeClass(this.options.hoverClass); |
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174 } |
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175 this._trigger("drop", event, this.ui(draggable)); |
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176 return this.element; |
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177 } |
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178 |
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179 return false; |
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180 |
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181 }, |
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182 |
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183 ui: function(c) { |
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184 return { |
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185 draggable: (c.currentItem || c.element), |
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186 helper: c.helper, |
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187 position: c.position, |
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188 offset: c.positionAbs |
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189 }; |
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190 } |
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191 |
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192 }); |
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193 |
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194 $.ui.intersect = function(draggable, droppable, toleranceMode) { |
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195 |
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196 if (!droppable.offset) { |
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197 return false; |
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198 } |
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199 |
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200 var draggableLeft, draggableTop, |
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201 x1 = (draggable.positionAbs || draggable.position.absolute).left, x2 = x1 + draggable.helperProportions.width, |
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202 y1 = (draggable.positionAbs || draggable.position.absolute).top, y2 = y1 + draggable.helperProportions.height, |
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203 l = droppable.offset.left, r = l + droppable.proportions.width, |
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204 t = droppable.offset.top, b = t + droppable.proportions.height; |
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205 |
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206 switch (toleranceMode) { |
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207 case "fit": |
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208 return (l <= x1 && x2 <= r && t <= y1 && y2 <= b); |
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209 case "intersect": |
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210 return (l < x1 + (draggable.helperProportions.width / 2) && // Right Half |
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211 x2 - (draggable.helperProportions.width / 2) < r && // Left Half |
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212 t < y1 + (draggable.helperProportions.height / 2) && // Bottom Half |
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213 y2 - (draggable.helperProportions.height / 2) < b ); // Top Half |
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214 case "pointer": |
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215 draggableLeft = ((draggable.positionAbs || draggable.position.absolute).left + (draggable.clickOffset || draggable.offset.click).left); |
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216 draggableTop = ((draggable.positionAbs || draggable.position.absolute).top + (draggable.clickOffset || draggable.offset.click).top); |
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217 return isOverAxis( draggableTop, t, droppable.proportions.height ) && isOverAxis( draggableLeft, l, droppable.proportions.width ); |
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218 case "touch": |
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219 return ( |
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220 (y1 >= t && y1 <= b) || // Top edge touching |
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221 (y2 >= t && y2 <= b) || // Bottom edge touching |
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222 (y1 < t && y2 > b) // Surrounded vertically |
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223 ) && ( |
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224 (x1 >= l && x1 <= r) || // Left edge touching |
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225 (x2 >= l && x2 <= r) || // Right edge touching |
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226 (x1 < l && x2 > r) // Surrounded horizontally |
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227 ); |
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228 default: |
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229 return false; |
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230 } |
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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 This manager tracks offsets of draggables and droppables |
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236 */ |
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237 $.ui.ddmanager = { |
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238 current: null, |
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239 droppables: { "default": [] }, |
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240 prepareOffsets: function(t, event) { |
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241 |
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242 var i, j, |
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243 m = $.ui.ddmanager.droppables[t.options.scope] || [], |
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244 type = event ? event.type : null, // workaround for #2317 |
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245 list = (t.currentItem || t.element).find(":data(ui-droppable)").addBack(); |
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246 |
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247 droppablesLoop: for (i = 0; i < m.length; i++) { |
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248 |
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249 //No disabled and non-accepted |
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250 if(m[i].options.disabled || (t && !m[i].accept.call(m[i].element[0],(t.currentItem || t.element)))) { |
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251 continue; |
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252 } |
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253 |
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254 // Filter out elements in the current dragged item |
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255 for (j=0; j < list.length; j++) { |
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256 if(list[j] === m[i].element[0]) { |
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257 m[i].proportions.height = 0; |
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258 continue droppablesLoop; |
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259 } |
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260 } |
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261 |
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262 m[i].visible = m[i].element.css("display") !== "none"; |
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263 if(!m[i].visible) { |
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264 continue; |
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265 } |
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266 |
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267 //Activate the droppable if used directly from draggables |
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268 if(type === "mousedown") { |
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269 m[i]._activate.call(m[i], event); |
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270 } |
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271 |
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272 m[i].offset = m[i].element.offset(); |
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273 m[i].proportions = { width: m[i].element[0].offsetWidth, height: m[i].element[0].offsetHeight }; |
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274 |
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275 } |
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276 |
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277 }, |
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278 drop: function(draggable, event) { |
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279 |
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280 var dropped = false; |
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281 // Create a copy of the droppables in case the list changes during the drop (#9116) |
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282 $.each(($.ui.ddmanager.droppables[draggable.options.scope] || []).slice(), function() { |
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283 |
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284 if(!this.options) { |
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285 return; |
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286 } |
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287 if (!this.options.disabled && this.visible && $.ui.intersect(draggable, this, this.options.tolerance)) { |
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288 dropped = this._drop.call(this, event) || dropped; |
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289 } |
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290 |
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291 if (!this.options.disabled && this.visible && this.accept.call(this.element[0],(draggable.currentItem || draggable.element))) { |
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292 this.isout = true; |
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293 this.isover = false; |
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294 this._deactivate.call(this, event); |
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295 } |
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296 |
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297 }); |
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298 return dropped; |
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299 |
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300 }, |
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301 dragStart: function( draggable, event ) { |
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302 //Listen for scrolling so that if the dragging causes scrolling the position of the droppables can be recalculated (see #5003) |
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303 draggable.element.parentsUntil( "body" ).bind( "scroll.droppable", function() { |
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304 if( !draggable.options.refreshPositions ) { |
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305 $.ui.ddmanager.prepareOffsets( draggable, event ); |
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306 } |
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307 }); |
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308 }, |
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309 drag: function(draggable, event) { |
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310 |
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311 //If you have a highly dynamic page, you might try this option. It renders positions every time you move the mouse. |
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312 if(draggable.options.refreshPositions) { |
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313 $.ui.ddmanager.prepareOffsets(draggable, event); |
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314 } |
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315 |
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316 //Run through all droppables and check their positions based on specific tolerance options |
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317 $.each($.ui.ddmanager.droppables[draggable.options.scope] || [], function() { |
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318 |
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319 if(this.options.disabled || this.greedyChild || !this.visible) { |
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320 return; |
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321 } |
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322 |
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323 var parentInstance, scope, parent, |
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324 intersects = $.ui.intersect(draggable, this, this.options.tolerance), |
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325 c = !intersects && this.isover ? "isout" : (intersects && !this.isover ? "isover" : null); |
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326 if(!c) { |
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327 return; |
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328 } |
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329 |
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330 if (this.options.greedy) { |
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331 // find droppable parents with same scope |
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332 scope = this.options.scope; |
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333 parent = this.element.parents(":data(ui-droppable)").filter(function () { |
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334 return $.data(this, "ui-droppable").options.scope === scope; |
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335 }); |
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336 |
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337 if (parent.length) { |
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338 parentInstance = $.data(parent[0], "ui-droppable"); |
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339 parentInstance.greedyChild = (c === "isover"); |
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340 } |
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341 } |
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342 |
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343 // we just moved into a greedy child |
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344 if (parentInstance && c === "isover") { |
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345 parentInstance.isover = false; |
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346 parentInstance.isout = true; |
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347 parentInstance._out.call(parentInstance, event); |
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348 } |
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349 |
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350 this[c] = true; |
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351 this[c === "isout" ? "isover" : "isout"] = false; |
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352 this[c === "isover" ? "_over" : "_out"].call(this, event); |
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353 |
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354 // we just moved out of a greedy child |
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355 if (parentInstance && c === "isout") { |
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356 parentInstance.isout = false; |
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357 parentInstance.isover = true; |
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358 parentInstance._over.call(parentInstance, event); |
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359 } |
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360 }); |
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361 |
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362 }, |
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363 dragStop: function( draggable, event ) { |
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364 draggable.element.parentsUntil( "body" ).unbind( "scroll.droppable" ); |
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365 //Call prepareOffsets one final time since IE does not fire return scroll events when overflow was caused by drag (see #5003) |
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366 if( !draggable.options.refreshPositions ) { |
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367 $.ui.ddmanager.prepareOffsets( draggable, event ); |
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368 } |
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369 } |
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370 }; |
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371 |
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372 })(jQuery); |
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