1 | /*
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2 | * jQuery UI Droppable 1.8.15
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3 | *
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4 | * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
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5 | * Dual licensed under the MIT or GPL Version 2 licenses.
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6 | * http://jquery.org/license
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7 | *
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8 | * http://docs.jquery.com/UI/Droppables
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9 | *
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10 | * Depends:
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11 | * jquery.ui.core.js
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12 | * jquery.ui.widget.js
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13 | * jquery.ui.mouse.js
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14 | * jquery.ui.draggable.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.droppable", {
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19 | widgetEventPrefix: "drop",
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20 | options: {
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21 | accept: '*',
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22 | activeClass: false,
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23 | addClasses: true,
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24 | greedy: false,
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25 | hoverClass: false,
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26 | scope: 'default',
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27 | tolerance: 'intersect'
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28 | },
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29 | _create: function() {
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30 |
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31 | var o = this.options, accept = o.accept;
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32 | this.isover = 0; this.isout = 1;
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33 |
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34 | this.accept = $.isFunction(accept) ? accept : function(d) {
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35 | return d.is(accept);
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36 | };
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37 |
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38 | //Store the droppable's proportions
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39 | this.proportions = { width: this.element[0].offsetWidth, height: this.element[0].offsetHeight };
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40 |
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41 | // Add the reference and positions to the manager
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42 | $.ui.ddmanager.droppables[o.scope] = $.ui.ddmanager.droppables[o.scope] || [];
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43 | $.ui.ddmanager.droppables[o.scope].push(this);
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44 |
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45 | (o.addClasses && this.element.addClass("ui-droppable"));
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46 |
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47 | },
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48 |
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49 | destroy: function() {
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50 | var drop = $.ui.ddmanager.droppables[this.options.scope];
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51 | for ( var i = 0; i < drop.length; i++ )
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52 | if ( drop[i] == this )
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53 | drop.splice(i, 1);
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54 |
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55 | this.element
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56 | .removeClass("ui-droppable ui-droppable-disabled")
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57 | .removeData("droppable")
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58 | .unbind(".droppable");
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59 |
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60 | return this;
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61 | },
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62 |
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63 | _setOption: function(key, value) {
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64 |
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65 | if(key == 'accept') {
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66 | this.accept = $.isFunction(value) ? value : function(d) {
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67 | return d.is(value);
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68 | };
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69 | }
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70 | $.Widget.prototype._setOption.apply(this, arguments);
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71 | },
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72 |
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73 | _activate: function(event) {
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74 | var draggable = $.ui.ddmanager.current;
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75 | if(this.options.activeClass) this.element.addClass(this.options.activeClass);
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76 | (draggable && this._trigger('activate', event, this.ui(draggable)));
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77 | },
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78 |
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79 | _deactivate: function(event) {
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80 | var draggable = $.ui.ddmanager.current;
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81 | if(this.options.activeClass) this.element.removeClass(this.options.activeClass);
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82 | (draggable && this._trigger('deactivate', event, this.ui(draggable)));
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83 | },
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84 |
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85 | _over: function(event) {
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86 |
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87 | var draggable = $.ui.ddmanager.current;
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88 | if (!draggable || (draggable.currentItem || draggable.element)[0] == this.element[0]) return; // Bail if draggable and droppable are same element
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89 |
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90 | if (this.accept.call(this.element[0],(draggable.currentItem || draggable.element))) {
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91 | if(this.options.hoverClass) this.element.addClass(this.options.hoverClass);
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92 | this._trigger('over', event, this.ui(draggable));
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93 | }
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94 |
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95 | },
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96 |
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97 | _out: function(event) {
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98 |
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99 | var draggable = $.ui.ddmanager.current;
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100 | if (!draggable || (draggable.currentItem || draggable.element)[0] == this.element[0]) return; // Bail if draggable and droppable are same element
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101 |
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102 | if (this.accept.call(this.element[0],(draggable.currentItem || draggable.element))) {
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103 | if(this.options.hoverClass) this.element.removeClass(this.options.hoverClass);
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104 | this._trigger('out', event, this.ui(draggable));
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105 | }
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106 |
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107 | },
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108 |
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109 | _drop: function(event,custom) {
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110 |
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111 | var draggable = custom || $.ui.ddmanager.current;
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112 | if (!draggable || (draggable.currentItem || draggable.element)[0] == this.element[0]) return false; // Bail if draggable and droppable are same element
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113 |
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114 | var childrenIntersection = false;
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115 | this.element.find(":data(droppable)").not(".ui-draggable-dragging").each(function() {
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116 | var inst = $.data(this, 'droppable');
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117 | if(
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118 | inst.options.greedy
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119 | && !inst.options.disabled
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120 | && inst.options.scope == draggable.options.scope
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121 | && inst.accept.call(inst.element[0], (draggable.currentItem || draggable.element))
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122 | && $.ui.intersect(draggable, $.extend(inst, { offset: inst.element.offset() }), inst.options.tolerance)
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123 | ) { childrenIntersection = true; return false; }
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124 | });
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125 | if(childrenIntersection) return false;
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126 |
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127 | if(this.accept.call(this.element[0],(draggable.currentItem || draggable.element))) {
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128 | if(this.options.activeClass) this.element.removeClass(this.options.activeClass);
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129 | if(this.options.hoverClass) this.element.removeClass(this.options.hoverClass);
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130 | this._trigger('drop', event, this.ui(draggable));
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131 | return this.element;
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132 | }
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133 |
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134 | return false;
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135 |
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136 | },
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137 |
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138 | ui: function(c) {
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139 | return {
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140 | draggable: (c.currentItem || c.element),
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141 | helper: c.helper,
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142 | position: c.position,
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143 | offset: c.positionAbs
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144 | };
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145 | }
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146 |
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147 | });
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148 |
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149 | $.extend($.ui.droppable, {
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150 | version: "1.8.15"
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151 | });
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152 |
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153 | $.ui.intersect = function(draggable, droppable, toleranceMode) {
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154 |
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155 | if (!droppable.offset) return false;
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156 |
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157 | var x1 = (draggable.positionAbs || draggable.position.absolute).left, x2 = x1 + draggable.helperProportions.width,
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158 | y1 = (draggable.positionAbs || draggable.position.absolute).top, y2 = y1 + draggable.helperProportions.height;
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159 | var l = droppable.offset.left, r = l + droppable.proportions.width,
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160 | t = droppable.offset.top, b = t + droppable.proportions.height;
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161 |
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162 | switch (toleranceMode) {
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163 | case 'fit':
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164 | return (l <= x1 && x2 <= r
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165 | && t <= y1 && y2 <= b);
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166 | break;
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167 | case 'intersect':
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168 | return (l < x1 + (draggable.helperProportions.width / 2) // Right Half
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169 | && x2 - (draggable.helperProportions.width / 2) < r // Left Half
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170 | && t < y1 + (draggable.helperProportions.height / 2) // Bottom Half
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171 | && y2 - (draggable.helperProportions.height / 2) < b ); // Top Half
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172 | break;
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173 | case 'pointer':
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174 | var draggableLeft = ((draggable.positionAbs || draggable.position.absolute).left + (draggable.clickOffset || draggable.offset.click).left),
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175 | draggableTop = ((draggable.positionAbs || draggable.position.absolute).top + (draggable.clickOffset || draggable.offset.click).top),
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176 | isOver = $.ui.isOver(draggableTop, draggableLeft, t, l, droppable.proportions.height, droppable.proportions.width);
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177 | return isOver;
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178 | break;
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179 | case 'touch':
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180 | return (
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181 | (y1 >= t && y1 <= b) || // Top edge touching
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182 | (y2 >= t && y2 <= b) || // Bottom edge touching
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183 | (y1 < t && y2 > b) // Surrounded vertically
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184 | ) && (
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185 | (x1 >= l && x1 <= r) || // Left edge touching
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186 | (x2 >= l && x2 <= r) || // Right edge touching
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187 | (x1 < l && x2 > r) // Surrounded horizontally
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188 | );
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189 | break;
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190 | default:
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191 | return false;
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192 | break;
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193 | }
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194 |
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195 | };
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196 |
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197 | /*
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198 | This manager tracks offsets of draggables and droppables
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199 | */
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200 | $.ui.ddmanager = {
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201 | current: null,
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202 | droppables: { 'default': [] },
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203 | prepareOffsets: function(t, event) {
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204 |
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205 | var m = $.ui.ddmanager.droppables[t.options.scope] || [];
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206 | var type = event ? event.type : null; // workaround for #2317
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207 | var list = (t.currentItem || t.element).find(":data(droppable)").andSelf();
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208 |
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209 | droppablesLoop: for (var i = 0; i < m.length; i++) {
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210 |
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211 | if(m[i].options.disabled || (t && !m[i].accept.call(m[i].element[0],(t.currentItem || t.element)))) continue; //No disabled and non-accepted
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212 | for (var j=0; j < list.length; j++) { if(list[j] == m[i].element[0]) { m[i].proportions.height = 0; continue droppablesLoop; } }; //Filter out elements in the current dragged item
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213 | m[i].visible = m[i].element.css("display") != "none"; if(!m[i].visible) continue; //If the element is not visible, continue
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214 |
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215 | if(type == "mousedown") m[i]._activate.call(m[i], event); //Activate the droppable if used directly from draggables
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216 |
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217 | m[i].offset = m[i].element.offset();
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218 | m[i].proportions = { width: m[i].element[0].offsetWidth, height: m[i].element[0].offsetHeight };
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219 |
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220 | }
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221 |
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222 | },
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223 | drop: function(draggable, event) {
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224 |
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225 | var dropped = false;
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226 | $.each($.ui.ddmanager.droppables[draggable.options.scope] || [], function() {
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227 |
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228 | if(!this.options) return;
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229 | if (!this.options.disabled && this.visible && $.ui.intersect(draggable, this, this.options.tolerance))
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230 | dropped = dropped || this._drop.call(this, event);
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231 |
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232 | if (!this.options.disabled && this.visible && this.accept.call(this.element[0],(draggable.currentItem || draggable.element))) {
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233 | this.isout = 1; this.isover = 0;
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234 | this._deactivate.call(this, event);
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235 | }
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236 |
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237 | });
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238 | return dropped;
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239 |
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240 | },
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241 | dragStart: function( draggable, event ) {
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242 | //Listen for scrolling so that if the dragging causes scrolling the position of the droppables can be recalculated (see #5003)
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243 | draggable.element.parentsUntil( "body" ).bind( "scroll.droppable", function() {
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244 | if( !draggable.options.refreshPositions ) $.ui.ddmanager.prepareOffsets( draggable, event );
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245 | });
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246 | },
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247 | drag: function(draggable, event) {
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248 |
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249 | //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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250 | if(draggable.options.refreshPositions) $.ui.ddmanager.prepareOffsets(draggable, event);
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251 |
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252 | //Run through all droppables and check their positions based on specific tolerance options
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253 | $.each($.ui.ddmanager.droppables[draggable.options.scope] || [], function() {
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254 |
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255 | if(this.options.disabled || this.greedyChild || !this.visible) return;
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256 | var intersects = $.ui.intersect(draggable, this, this.options.tolerance);
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257 |
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258 | var c = !intersects && this.isover == 1 ? 'isout' : (intersects && this.isover == 0 ? 'isover' : null);
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259 | if(!c) return;
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260 |
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261 | var parentInstance;
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262 | if (this.options.greedy) {
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263 | var parent = this.element.parents(':data(droppable):eq(0)');
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264 | if (parent.length) {
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265 | parentInstance = $.data(parent[0], 'droppable');
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266 | parentInstance.greedyChild = (c == 'isover' ? 1 : 0);
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267 | }
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268 | }
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269 |
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270 | // we just moved into a greedy child
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271 | if (parentInstance && c == 'isover') {
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272 | parentInstance['isover'] = 0;
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273 | parentInstance['isout'] = 1;
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274 | parentInstance._out.call(parentInstance, event);
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275 | }
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276 |
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277 | this[c] = 1; this[c == 'isout' ? 'isover' : 'isout'] = 0;
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278 | this[c == "isover" ? "_over" : "_out"].call(this, event);
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279 |
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280 | // we just moved out of a greedy child
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281 | if (parentInstance && c == 'isout') {
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282 | parentInstance['isout'] = 0;
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283 | parentInstance['isover'] = 1;
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284 | parentInstance._over.call(parentInstance, event);
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285 | }
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286 | });
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287 |
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288 | },
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289 | dragStop: function( draggable, event ) {
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290 | draggable.element.parentsUntil( "body" ).unbind( "scroll.droppable" );
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291 | //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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292 | if( !draggable.options.refreshPositions ) $.ui.ddmanager.prepareOffsets( draggable, event );
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293 | }
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294 | };
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295 |
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296 | })(jQuery);
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