1 | // script.aculo.us dragdrop.js v1.6.5, Wed Nov 08 14:17:49 CET 2006 |
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2 | |
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3 | // Copyright (c) 2005, 2006 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us) |
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4 | // (c) 2005, 2006 Sammi Williams (http://www.oriontransfer.co.nz, sammi@oriontransfer.co.nz) |
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5 | // |
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6 | // script.aculo.us is freely distributable under the terms of an MIT-style license. |
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7 | // For details, see the script.aculo.us web site: http://script.aculo.us/ |
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8 | |
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9 | if(typeof Effect == 'undefined') |
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10 | throw("dragdrop.js requires including script.aculo.us' effects.js library"); |
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11 | |
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12 | var Droppables = { |
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13 | drops: [], |
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14 | |
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15 | remove: function(element) { |
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16 | this.drops = this.drops.reject(function(d) { return d.element==$(element) }); |
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17 | }, |
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18 | |
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19 | add: function(element) { |
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20 | element = $(element); |
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21 | var options = Object.extend({ |
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22 | greedy: true, |
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23 | hoverclass: null, |
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24 | tree: false |
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25 | }, arguments[1] || {}); |
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26 | |
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27 | // cache containers |
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28 | if(options.containment) { |
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29 | options._containers = []; |
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30 | var containment = options.containment; |
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31 | if((typeof containment == 'object') && |
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32 | (containment.constructor == Array)) { |
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33 | containment.each( function(c) { options._containers.push($(c)) }); |
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34 | } else { |
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35 | options._containers.push($(containment)); |
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36 | } |
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37 | } |
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38 | |
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39 | if(options.accept) options.accept = [options.accept].flatten(); |
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40 | |
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41 | Element.makePositioned(element); // fix IE |
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42 | options.element = element; |
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43 | |
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44 | this.drops.push(options); |
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45 | }, |
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46 | |
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47 | findDeepestChild: function(drops) { |
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48 | deepest = drops[0]; |
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49 | |
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50 | for (i = 1; i < drops.length; ++i) |
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51 | if (Element.isParent(drops[i].element, deepest.element)) |
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52 | deepest = drops[i]; |
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53 | |
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54 | return deepest; |
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55 | }, |
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56 | |
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57 | isContained: function(element, drop) { |
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58 | var containmentNode; |
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59 | if(drop.tree) { |
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60 | containmentNode = element.treeNode; |
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61 | } else { |
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62 | containmentNode = element.parentNode; |
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63 | } |
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64 | return drop._containers.detect(function(c) { return containmentNode == c }); |
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65 | }, |
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66 | |
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67 | isAffected: function(point, element, drop) { |
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68 | return ( |
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69 | (drop.element!=element) && |
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70 | ((!drop._containers) || |
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71 | this.isContained(element, drop)) && |
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72 | ((!drop.accept) || |
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73 | (Element.classNames(element).detect( |
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74 | function(v) { return drop.accept.include(v) } ) )) && |
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75 | Position.within(drop.element, point[0], point[1]) ); |
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76 | }, |
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77 | |
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78 | deactivate: function(drop) { |
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79 | if(drop.hoverclass) |
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80 | Element.removeClassName(drop.element, drop.hoverclass); |
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81 | this.last_active = null; |
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82 | }, |
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83 | |
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84 | activate: function(drop) { |
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85 | if(drop.hoverclass) |
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86 | Element.addClassName(drop.element, drop.hoverclass); |
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87 | this.last_active = drop; |
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88 | }, |
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89 | |
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90 | show: function(point, element) { |
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91 | if(!this.drops.length) return; |
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92 | var affected = []; |
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93 | |
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94 | if(this.last_active) this.deactivate(this.last_active); |
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95 | this.drops.each( function(drop) { |
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96 | if(Droppables.isAffected(point, element, drop)) |
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97 | affected.push(drop); |
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98 | }); |
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99 | |
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100 | if(affected.length>0) { |
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101 | drop = Droppables.findDeepestChild(affected); |
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102 | Position.within(drop.element, point[0], point[1]); |
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103 | if(drop.onHover) |
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104 | drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element)); |
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105 | |
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106 | Droppables.activate(drop); |
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107 | } |
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108 | }, |
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109 | |
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110 | fire: function(event, element) { |
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111 | if(!this.last_active) return; |
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112 | Position.prepare(); |
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113 | |
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114 | if (this.isAffected([Event.pointerX(event), Event.pointerY(event)], element, this.last_active)) |
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115 | if (this.last_active.onDrop) |
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116 | this.last_active.onDrop(element, this.last_active.element, event); |
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117 | }, |
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118 | |
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119 | reset: function() { |
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120 | if(this.last_active) |
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121 | this.deactivate(this.last_active); |
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122 | } |
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123 | }; |
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124 | |
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125 | var Draggables = { |
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126 | drags: [], |
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127 | observers: [], |
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128 | |
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129 | register: function(draggable) { |
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130 | if(this.drags.length == 0) { |
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131 | this.eventMouseUp = this.endDrag.bindAsEventListener(this); |
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132 | this.eventMouseMove = this.updateDrag.bindAsEventListener(this); |
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133 | this.eventKeypress = this.keyPress.bindAsEventListener(this); |
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134 | |
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135 | Event.observe(document, "mouseup", this.eventMouseUp); |
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136 | Event.observe(document, "mousemove", this.eventMouseMove); |
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137 | Event.observe(document, "keypress", this.eventKeypress); |
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138 | } |
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139 | this.drags.push(draggable); |
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140 | }, |
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141 | |
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142 | unregister: function(draggable) { |
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143 | this.drags = this.drags.reject(function(d) { return d==draggable }); |
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144 | if(this.drags.length == 0) { |
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145 | Event.stopObserving(document, "mouseup", this.eventMouseUp); |
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146 | Event.stopObserving(document, "mousemove", this.eventMouseMove); |
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147 | Event.stopObserving(document, "keypress", this.eventKeypress); |
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148 | } |
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149 | }, |
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150 | |
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151 | activate: function(draggable) { |
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152 | if(draggable.options.delay) { |
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153 | this._timeout = setTimeout(function() { |
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154 | Draggables._timeout = null; |
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155 | window.focus(); |
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156 | Draggables.activeDraggable = draggable; |
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157 | }.bind(this), draggable.options.delay); |
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158 | } else { |
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159 | window.focus(); // allows keypress events if window isn't currently focused, fails for Safari |
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160 | this.activeDraggable = draggable; |
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161 | } |
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162 | }, |
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163 | |
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164 | deactivate: function() { |
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165 | this.activeDraggable = null; |
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166 | }, |
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167 | |
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168 | updateDrag: function(event) { |
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169 | if(!this.activeDraggable) return; |
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170 | var pointer = [Event.pointerX(event), Event.pointerY(event)]; |
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171 | // Mozilla-based browsers fire successive mousemove events with |
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172 | // the same coordinates, prevent needless redrawing (moz bug?) |
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173 | if(this._lastPointer && (this._lastPointer.inspect() == pointer.inspect())) return; |
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174 | this._lastPointer = pointer; |
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175 | |
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176 | this.activeDraggable.updateDrag(event, pointer); |
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177 | }, |
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178 | |
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179 | endDrag: function(event) { |
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180 | if(this._timeout) { |
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181 | clearTimeout(this._timeout); |
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182 | this._timeout = null; |
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183 | } |
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184 | if(!this.activeDraggable) return; |
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185 | this._lastPointer = null; |
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186 | this.activeDraggable.endDrag(event); |
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187 | this.activeDraggable = null; |
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188 | }, |
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189 | |
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190 | keyPress: function(event) { |
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191 | if(this.activeDraggable) |
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192 | this.activeDraggable.keyPress(event); |
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193 | }, |
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194 | |
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195 | addObserver: function(observer) { |
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196 | this.observers.push(observer); |
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197 | this._cacheObserverCallbacks(); |
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198 | }, |
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199 | |
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200 | removeObserver: function(element) { // element instead of observer fixes mem leaks |
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201 | this.observers = this.observers.reject( function(o) { return o.element==element }); |
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202 | this._cacheObserverCallbacks(); |
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203 | }, |
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204 | |
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205 | notify: function(eventName, draggable, event) { // 'onStart', 'onEnd', 'onDrag' |
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206 | if(this[eventName+'Count'] > 0) |
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207 | this.observers.each( function(o) { |
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208 | if(o[eventName]) o[eventName](eventName, draggable, event); |
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209 | }); |
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210 | if(draggable.options[eventName]) draggable.options[eventName](draggable, event); |
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211 | }, |
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212 | |
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213 | _cacheObserverCallbacks: function() { |
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214 | ['onStart','onEnd','onDrag'].each( function(eventName) { |
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215 | Draggables[eventName+'Count'] = Draggables.observers.select( |
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216 | function(o) { return o[eventName]; } |
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217 | ).length; |
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218 | }); |
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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 | |
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224 | var Draggable = Class.create(); |
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225 | Draggable._dragging = {}; |
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226 | |
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227 | Draggable.prototype = { |
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228 | initialize: function(element) { |
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229 | var defaults = { |
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230 | handle: false, |
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231 | reverteffect: function(element, top_offset, left_offset) { |
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232 | var dur = Math.sqrt(Math.abs(top_offset^2)+Math.abs(left_offset^2))*0.02; |
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233 | new Effect.Move(element, { x: -left_offset, y: -top_offset, duration: dur, |
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234 | queue: {scope:'_draggable', position:'end'} |
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235 | }); |
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236 | }, |
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237 | endeffect: function(element) { |
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238 | var toOpacity = typeof element._opacity == 'number' ? element._opacity : 1.0; |
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239 | new Effect.Opacity(element, {duration:0.2, from:0.7, to:toOpacity, |
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240 | queue: {scope:'_draggable', position:'end'}, |
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241 | afterFinish: function(){ |
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242 | Draggable._dragging[element] = false |
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243 | } |
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244 | }); |
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245 | }, |
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246 | zindex: 1000, |
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247 | revert: false, |
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248 | scroll: false, |
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249 | scrollSensitivity: 20, |
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250 | scrollSpeed: 15, |
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251 | snap: false, // false, or xy or [x,y] or function(x,y){ return [x,y] } |
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252 | delay: 0 |
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253 | }; |
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254 | |
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255 | if(!arguments[1] || typeof arguments[1].endeffect == 'undefined') |
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256 | Object.extend(defaults, { |
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257 | starteffect: function(element) { |
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258 | element._opacity = Element.getOpacity(element); |
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259 | Draggable._dragging[element] = true; |
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260 | new Effect.Opacity(element, {duration:0.2, from:element._opacity, to:0.7}); |
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261 | } |
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262 | }); |
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263 | |
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264 | var options = Object.extend(defaults, arguments[1] || {}); |
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265 | |
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266 | this.element = $(element); |
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267 | |
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268 | if(options.handle && (typeof options.handle == 'string')) |
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269 | this.handle = this.element.down('.'+options.handle, 0); |
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270 | |
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271 | if(!this.handle) this.handle = $(options.handle); |
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272 | if(!this.handle) this.handle = this.element; |
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273 | |
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274 | if(options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML) { |
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275 | options.scroll = $(options.scroll); |
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276 | this._isScrollChild = Element.childOf(this.element, options.scroll); |
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277 | } |
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278 | |
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279 | Element.makePositioned(this.element); // fix IE |
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280 | |
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281 | this.delta = this.currentDelta(); |
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282 | this.options = options; |
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283 | this.dragging = false; |
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284 | |
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285 | this.eventMouseDown = this.initDrag.bindAsEventListener(this); |
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286 | Event.observe(this.handle, "mousedown", this.eventMouseDown); |
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287 | |
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288 | Draggables.register(this); |
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289 | }, |
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290 | |
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291 | destroy: function() { |
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292 | Event.stopObserving(this.handle, "mousedown", this.eventMouseDown); |
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293 | Draggables.unregister(this); |
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294 | }, |
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295 | |
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296 | currentDelta: function() { |
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297 | return([ |
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298 | parseInt(Element.getStyle(this.element,'left') || '0'), |
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299 | parseInt(Element.getStyle(this.element,'top') || '0')]); |
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300 | }, |
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301 | |
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302 | initDrag: function(event) { |
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303 | if(typeof Draggable._dragging[this.element] != 'undefined' && |
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304 | Draggable._dragging[this.element]) return; |
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305 | if(Event.isLeftClick(event)) { |
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306 | // abort on form elements, fixes a Firefox issue |
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307 | var src = Event.element(event); |
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308 | if(src.tagName && ( |
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309 | src.tagName=='INPUT' || |
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310 | src.tagName=='SELECT' || |
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311 | src.tagName=='OPTION' || |
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312 | src.tagName=='BUTTON' || |
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313 | src.tagName=='TEXTAREA')) return; |
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314 | |
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315 | var pointer = [Event.pointerX(event), Event.pointerY(event)]; |
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316 | var pos = Position.cumulativeOffset(this.element); |
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317 | this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) }); |
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318 | |
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319 | Draggables.activate(this); |
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320 | Event.stop(event); |
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321 | } |
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322 | }, |
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323 | |
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324 | startDrag: function(event) { |
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325 | this.dragging = true; |
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326 | |
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327 | if(this.options.zindex) { |
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328 | this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0); |
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329 | this.element.style.zIndex = this.options.zindex; |
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330 | } |
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331 | |
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332 | if(this.options.ghosting) { |
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333 | this._clone = this.element.cloneNode(true); |
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334 | Position.absolutize(this.element); |
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335 | this.element.parentNode.insertBefore(this._clone, this.element); |
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336 | } |
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337 | |
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338 | if(this.options.scroll) { |
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339 | if (this.options.scroll == window) { |
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340 | var where = this._getWindowScroll(this.options.scroll); |
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341 | this.originalScrollLeft = where.left; |
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342 | this.originalScrollTop = where.top; |
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343 | } else { |
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344 | this.originalScrollLeft = this.options.scroll.scrollLeft; |
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345 | this.originalScrollTop = this.options.scroll.scrollTop; |
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346 | } |
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347 | } |
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348 | |
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349 | Draggables.notify('onStart', this, event); |
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350 | |
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351 | if(this.options.starteffect) this.options.starteffect(this.element); |
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352 | }, |
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353 | |
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354 | updateDrag: function(event, pointer) { |
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355 | if(!this.dragging) this.startDrag(event); |
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356 | Position.prepare(); |
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357 | Droppables.show(pointer, this.element); |
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358 | Draggables.notify('onDrag', this, event); |
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359 | |
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360 | this.draw(pointer); |
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361 | if(this.options.change) this.options.change(this); |
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362 | |
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363 | if(this.options.scroll) { |
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364 | this.stopScrolling(); |
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365 | |
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366 | var p; |
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367 | if (this.options.scroll == window) { |
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368 | with(this._getWindowScroll(this.options.scroll)) { p = [ left, top, left+width, top+height ]; } |
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369 | } else { |
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370 | p = Position.page(this.options.scroll); |
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371 | p[0] += this.options.scroll.scrollLeft + Position.deltaX; |
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372 | p[1] += this.options.scroll.scrollTop + Position.deltaY; |
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373 | p.push(p[0]+this.options.scroll.offsetWidth); |
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374 | p.push(p[1]+this.options.scroll.offsetHeight); |
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375 | } |
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376 | var speed = [0,0]; |
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377 | if(pointer[0] < (p[0]+this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[0]+this.options.scrollSensitivity); |
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378 | if(pointer[1] < (p[1]+this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[1]+this.options.scrollSensitivity); |
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379 | if(pointer[0] > (p[2]-this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[2]-this.options.scrollSensitivity); |
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380 | if(pointer[1] > (p[3]-this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[3]-this.options.scrollSensitivity); |
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381 | this.startScrolling(speed); |
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382 | } |
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383 | |
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384 | // fix AppleWebKit rendering |
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385 | if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0); |
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386 | |
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387 | Event.stop(event); |
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388 | }, |
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389 | |
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390 | finishDrag: function(event, success) { |
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391 | this.dragging = false; |
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392 | |
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393 | if(this.options.ghosting) { |
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394 | Position.relativize(this.element); |
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395 | Element.remove(this._clone); |
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396 | this._clone = null; |
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397 | } |
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398 | |
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399 | if(success) Droppables.fire(event, this.element); |
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400 | Draggables.notify('onEnd', this, event); |
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401 | |
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402 | var revert = this.options.revert; |
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403 | if(revert && typeof revert == 'function') revert = revert(this.element); |
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404 | |
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405 | var d = this.currentDelta(); |
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406 | if(revert && this.options.reverteffect) { |
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407 | this.options.reverteffect(this.element, |
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408 | d[1]-this.delta[1], d[0]-this.delta[0]); |
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409 | } else { |
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410 | this.delta = d; |
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411 | } |
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412 | |
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413 | if(this.options.zindex) |
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414 | this.element.style.zIndex = this.originalZ; |
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415 | |
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416 | if(this.options.endeffect) |
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417 | this.options.endeffect(this.element); |
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418 | |
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419 | Draggables.deactivate(this); |
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420 | Droppables.reset(); |
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421 | }, |
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422 | |
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423 | keyPress: function(event) { |
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424 | if(event.keyCode!=Event.KEY_ESC) return; |
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425 | this.finishDrag(event, false); |
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426 | Event.stop(event); |
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427 | }, |
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428 | |
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429 | endDrag: function(event) { |
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430 | if(!this.dragging) return; |
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431 | this.stopScrolling(); |
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432 | this.finishDrag(event, true); |
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433 | Event.stop(event); |
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434 | }, |
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435 | |
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436 | draw: function(point) { |
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437 | var pos = Position.cumulativeOffset(this.element); |
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438 | if(this.options.ghosting) { |
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439 | var r = Position.realOffset(this.element); |
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440 | pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY; |
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441 | } |
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442 | |
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443 | var d = this.currentDelta(); |
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444 | pos[0] -= d[0]; pos[1] -= d[1]; |
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445 | |
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446 | if(this.options.scroll && (this.options.scroll != window && this._isScrollChild)) { |
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447 | pos[0] -= this.options.scroll.scrollLeft-this.originalScrollLeft; |
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448 | pos[1] -= this.options.scroll.scrollTop-this.originalScrollTop; |
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449 | } |
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450 | |
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451 | var p = [0,1].map(function(i){ |
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452 | return (point[i]-pos[i]-this.offset[i]) |
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453 | }.bind(this)); |
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454 | |
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455 | if(this.options.snap) { |
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456 | if(typeof this.options.snap == 'function') { |
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457 | p = this.options.snap(p[0],p[1],this); |
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458 | } else { |
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459 | if(this.options.snap instanceof Array) { |
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460 | p = p.map( function(v, i) { |
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461 | return Math.round(v/this.options.snap[i])*this.options.snap[i] }.bind(this)) |
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462 | } else { |
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463 | p = p.map( function(v) { |
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464 | return Math.round(v/this.options.snap)*this.options.snap }.bind(this)) |
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465 | } |
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466 | }} |
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467 | |
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468 | var style = this.element.style; |
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469 | if((!this.options.constraint) || (this.options.constraint=='horizontal')) |
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470 | style.left = p[0] + "px"; |
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471 | if((!this.options.constraint) || (this.options.constraint=='vertical')) |
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472 | style.top = p[1] + "px"; |
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473 | |
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474 | if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering |
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475 | }, |
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476 | |
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477 | stopScrolling: function() { |
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478 | if(this.scrollInterval) { |
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479 | clearInterval(this.scrollInterval); |
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480 | this.scrollInterval = null; |
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481 | Draggables._lastScrollPointer = null; |
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482 | } |
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483 | }, |
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484 | |
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485 | startScrolling: function(speed) { |
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486 | if(!(speed[0] || speed[1])) return; |
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487 | this.scrollSpeed = [speed[0]*this.options.scrollSpeed,speed[1]*this.options.scrollSpeed]; |
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488 | this.lastScrolled = new Date(); |
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489 | this.scrollInterval = setInterval(this.scroll.bind(this), 10); |
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490 | }, |
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491 | |
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492 | scroll: function() { |
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493 | var current = new Date(); |
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494 | var delta = current - this.lastScrolled; |
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495 | this.lastScrolled = current; |
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496 | if(this.options.scroll == window) { |
---|
497 | with (this._getWindowScroll(this.options.scroll)) { |
---|
498 | if (this.scrollSpeed[0] || this.scrollSpeed[1]) { |
---|
499 | var d = delta / 1000; |
---|
500 | this.options.scroll.scrollTo( left + d*this.scrollSpeed[0], top + d*this.scrollSpeed[1] ); |
---|
501 | } |
---|
502 | } |
---|
503 | } else { |
---|
504 | this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000; |
---|
505 | this.options.scroll.scrollTop += this.scrollSpeed[1] * delta / 1000; |
---|
506 | } |
---|
507 | |
---|
508 | Position.prepare(); |
---|
509 | Droppables.show(Draggables._lastPointer, this.element); |
---|
510 | Draggables.notify('onDrag', this); |
---|
511 | if (this._isScrollChild) { |
---|
512 | Draggables._lastScrollPointer = Draggables._lastScrollPointer || $A(Draggables._lastPointer); |
---|
513 | Draggables._lastScrollPointer[0] += this.scrollSpeed[0] * delta / 1000; |
---|
514 | Draggables._lastScrollPointer[1] += this.scrollSpeed[1] * delta / 1000; |
---|
515 | if (Draggables._lastScrollPointer[0] < 0) |
---|
516 | Draggables._lastScrollPointer[0] = 0; |
---|
517 | if (Draggables._lastScrollPointer[1] < 0) |
---|
518 | Draggables._lastScrollPointer[1] = 0; |
---|
519 | this.draw(Draggables._lastScrollPointer); |
---|
520 | } |
---|
521 | |
---|
522 | if(this.options.change) this.options.change(this); |
---|
523 | }, |
---|
524 | |
---|
525 | _getWindowScroll: function(w) { |
---|
526 | var T, L, W, H; |
---|
527 | with (w.document) { |
---|
528 | if (w.document.documentElement && documentElement.scrollTop) { |
---|
529 | T = documentElement.scrollTop; |
---|
530 | L = documentElement.scrollLeft; |
---|
531 | } else if (w.document.body) { |
---|
532 | T = body.scrollTop; |
---|
533 | L = body.scrollLeft; |
---|
534 | } |
---|
535 | if (w.innerWidth) { |
---|
536 | W = w.innerWidth; |
---|
537 | H = w.innerHeight; |
---|
538 | } else if (w.document.documentElement && documentElement.clientWidth) { |
---|
539 | W = documentElement.clientWidth; |
---|
540 | H = documentElement.clientHeight; |
---|
541 | } else { |
---|
542 | W = body.offsetWidth; |
---|
543 | H = body.offsetHeight |
---|
544 | } |
---|
545 | } |
---|
546 | return { top: T, left: L, width: W, height: H }; |
---|
547 | } |
---|
548 | }; |
---|
549 | |
---|
550 | /*--------------------------------------------------------------------------*/ |
---|
551 | |
---|
552 | var SortableObserver = Class.create(); |
---|
553 | SortableObserver.prototype = { |
---|
554 | initialize: function(element, observer) { |
---|
555 | this.element = $(element); |
---|
556 | this.observer = observer; |
---|
557 | this.lastValue = Sortable.serialize(this.element); |
---|
558 | }, |
---|
559 | |
---|
560 | onStart: function() { |
---|
561 | this.lastValue = Sortable.serialize(this.element); |
---|
562 | }, |
---|
563 | |
---|
564 | onEnd: function() { |
---|
565 | Sortable.unmark(); |
---|
566 | if(this.lastValue != Sortable.serialize(this.element)) |
---|
567 | this.observer(this.element) |
---|
568 | } |
---|
569 | }; |
---|
570 | |
---|
571 | var Sortable = { |
---|
572 | SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/, |
---|
573 | |
---|
574 | sortables: {}, |
---|
575 | |
---|
576 | _findRootElement: function(element) { |
---|
577 | while (element.tagName != "BODY") { |
---|
578 | if(element.id && Sortable.sortables[element.id]) return element; |
---|
579 | element = element.parentNode; |
---|
580 | } |
---|
581 | }, |
---|
582 | |
---|
583 | options: function(element) { |
---|
584 | element = Sortable._findRootElement($(element)); |
---|
585 | if(!element) return; |
---|
586 | return Sortable.sortables[element.id]; |
---|
587 | }, |
---|
588 | |
---|
589 | destroy: function(element){ |
---|
590 | var s = Sortable.options(element); |
---|
591 | |
---|
592 | if(s) { |
---|
593 | Draggables.removeObserver(s.element); |
---|
594 | s.droppables.each(function(d){ Droppables.remove(d) }); |
---|
595 | s.draggables.invoke('destroy'); |
---|
596 | |
---|
597 | delete Sortable.sortables[s.element.id]; |
---|
598 | } |
---|
599 | }, |
---|
600 | |
---|
601 | create: function(element) { |
---|
602 | element = $(element); |
---|
603 | var options = Object.extend({ |
---|
604 | element: element, |
---|
605 | tag: 'li', // assumes li children, override with tag: 'tagname' |
---|
606 | dropOnEmpty: false, |
---|
607 | tree: false, |
---|
608 | treeTag: 'ul', |
---|
609 | overlap: 'vertical', // one of 'vertical', 'horizontal' |
---|
610 | constraint: 'vertical', // one of 'vertical', 'horizontal', false |
---|
611 | containment: element, // also takes array of elements (or id's); or false |
---|
612 | handle: false, // or a CSS class |
---|
613 | only: false, |
---|
614 | delay: 0, |
---|
615 | hoverclass: null, |
---|
616 | ghosting: false, |
---|
617 | scroll: false, |
---|
618 | scrollSensitivity: 20, |
---|
619 | scrollSpeed: 15, |
---|
620 | format: this.SERIALIZE_RULE, |
---|
621 | onChange: Prototype.emptyFunction, |
---|
622 | onUpdate: Prototype.emptyFunction |
---|
623 | }, arguments[1] || {}); |
---|
624 | |
---|
625 | // clear any old sortable with same element |
---|
626 | this.destroy(element); |
---|
627 | |
---|
628 | // build options for the draggables |
---|
629 | var options_for_draggable = { |
---|
630 | revert: true, |
---|
631 | scroll: options.scroll, |
---|
632 | scrollSpeed: options.scrollSpeed, |
---|
633 | scrollSensitivity: options.scrollSensitivity, |
---|
634 | delay: options.delay, |
---|
635 | ghosting: options.ghosting, |
---|
636 | constraint: options.constraint, |
---|
637 | handle: options.handle }; |
---|
638 | |
---|
639 | if(options.starteffect) |
---|
640 | options_for_draggable.starteffect = options.starteffect; |
---|
641 | |
---|
642 | if(options.reverteffect) |
---|
643 | options_for_draggable.reverteffect = options.reverteffect; |
---|
644 | else |
---|
645 | if(options.ghosting) options_for_draggable.reverteffect = function(element) { |
---|
646 | element.style.top = 0; |
---|
647 | element.style.left = 0; |
---|
648 | }; |
---|
649 | |
---|
650 | if(options.endeffect) |
---|
651 | options_for_draggable.endeffect = options.endeffect; |
---|
652 | |
---|
653 | if(options.zindex) |
---|
654 | options_for_draggable.zindex = options.zindex; |
---|
655 | |
---|
656 | // build options for the droppables |
---|
657 | var options_for_droppable = { |
---|
658 | overlap: options.overlap, |
---|
659 | containment: options.containment, |
---|
660 | tree: options.tree, |
---|
661 | hoverclass: options.hoverclass, |
---|
662 | onHover: Sortable.onHover |
---|
663 | }; |
---|
664 | |
---|
665 | var options_for_tree = { |
---|
666 | onHover: Sortable.onEmptyHover, |
---|
667 | overlap: options.overlap, |
---|
668 | containment: options.containment, |
---|
669 | hoverclass: options.hoverclass |
---|
670 | }; |
---|
671 | |
---|
672 | // fix for gecko engine |
---|
673 | Element.cleanWhitespace(element); |
---|
674 | |
---|
675 | options.draggables = []; |
---|
676 | options.droppables = []; |
---|
677 | |
---|
678 | // drop on empty handling |
---|
679 | if(options.dropOnEmpty || options.tree) { |
---|
680 | Droppables.add(element, options_for_tree); |
---|
681 | options.droppables.push(element); |
---|
682 | } |
---|
683 | |
---|
684 | (this.findElements(element, options) || []).each( function(e) { |
---|
685 | // handles are per-draggable |
---|
686 | var handle = options.handle ? |
---|
687 | $(e).down('.'+options.handle,0) : e; |
---|
688 | options.draggables.push( |
---|
689 | new Draggable(e, Object.extend(options_for_draggable, { handle: handle }))); |
---|
690 | Droppables.add(e, options_for_droppable); |
---|
691 | if(options.tree) e.treeNode = element; |
---|
692 | options.droppables.push(e); |
---|
693 | }); |
---|
694 | |
---|
695 | if(options.tree) { |
---|
696 | (Sortable.findTreeElements(element, options) || []).each( function(e) { |
---|
697 | Droppables.add(e, options_for_tree); |
---|
698 | e.treeNode = element; |
---|
699 | options.droppables.push(e); |
---|
700 | }); |
---|
701 | } |
---|
702 | |
---|
703 | // keep reference |
---|
704 | this.sortables[element.id] = options; |
---|
705 | |
---|
706 | // for onupdate |
---|
707 | Draggables.addObserver(new SortableObserver(element, options.onUpdate)); |
---|
708 | |
---|
709 | }, |
---|
710 | |
---|
711 | // return all suitable-for-sortable elements in a guaranteed order |
---|
712 | findElements: function(element, options) { |
---|
713 | return Element.findChildren( |
---|
714 | element, options.only, options.tree ? true : false, options.tag); |
---|
715 | }, |
---|
716 | |
---|
717 | findTreeElements: function(element, options) { |
---|
718 | return Element.findChildren( |
---|
719 | element, options.only, options.tree ? true : false, options.treeTag); |
---|
720 | }, |
---|
721 | |
---|
722 | onHover: function(element, dropon, overlap) { |
---|
723 | if(Element.isParent(dropon, element)) return; |
---|
724 | |
---|
725 | if(overlap > .33 && overlap < .66 && Sortable.options(dropon).tree) { |
---|
726 | return; |
---|
727 | } else if(overlap>0.5) { |
---|
728 | Sortable.mark(dropon, 'before'); |
---|
729 | if(dropon.previousSibling != element) { |
---|
730 | var oldParentNode = element.parentNode; |
---|
731 | element.style.visibility = "hidden"; // fix gecko rendering |
---|
732 | dropon.parentNode.insertBefore(element, dropon); |
---|
733 | if(dropon.parentNode!=oldParentNode) |
---|
734 | Sortable.options(oldParentNode).onChange(element); |
---|
735 | Sortable.options(dropon.parentNode).onChange(element); |
---|
736 | } |
---|
737 | } else { |
---|
738 | Sortable.mark(dropon, 'after'); |
---|
739 | var nextElement = dropon.nextSibling || null; |
---|
740 | if(nextElement != element) { |
---|
741 | var oldParentNode = element.parentNode; |
---|
742 | element.style.visibility = "hidden"; // fix gecko rendering |
---|
743 | dropon.parentNode.insertBefore(element, nextElement); |
---|
744 | if(dropon.parentNode!=oldParentNode) |
---|
745 | Sortable.options(oldParentNode).onChange(element); |
---|
746 | Sortable.options(dropon.parentNode).onChange(element); |
---|
747 | } |
---|
748 | } |
---|
749 | }, |
---|
750 | |
---|
751 | onEmptyHover: function(element, dropon, overlap) { |
---|
752 | var oldParentNode = element.parentNode; |
---|
753 | var droponOptions = Sortable.options(dropon); |
---|
754 | |
---|
755 | if(!Element.isParent(dropon, element)) { |
---|
756 | var index; |
---|
757 | |
---|
758 | var children = Sortable.findElements(dropon, {tag: droponOptions.tag, only: droponOptions.only}); |
---|
759 | var child = null; |
---|
760 | |
---|
761 | if(children) { |
---|
762 | var offset = Element.offsetSize(dropon, droponOptions.overlap) * (1.0 - overlap); |
---|
763 | |
---|
764 | for (index = 0; index < children.length; index += 1) { |
---|
765 | if (offset - Element.offsetSize (children[index], droponOptions.overlap) >= 0) { |
---|
766 | offset -= Element.offsetSize (children[index], droponOptions.overlap); |
---|
767 | } else if (offset - (Element.offsetSize (children[index], droponOptions.overlap) / 2) >= 0) { |
---|
768 | child = index + 1 < children.length ? children[index + 1] : null; |
---|
769 | break; |
---|
770 | } else { |
---|
771 | child = children[index]; |
---|
772 | break; |
---|
773 | } |
---|
774 | } |
---|
775 | } |
---|
776 | |
---|
777 | dropon.insertBefore(element, child); |
---|
778 | |
---|
779 | Sortable.options(oldParentNode).onChange(element); |
---|
780 | droponOptions.onChange(element); |
---|
781 | } |
---|
782 | }, |
---|
783 | |
---|
784 | unmark: function() { |
---|
785 | if(Sortable._marker) Sortable._marker.hide(); |
---|
786 | }, |
---|
787 | |
---|
788 | mark: function(dropon, position) { |
---|
789 | // mark on ghosting only |
---|
790 | var sortable = Sortable.options(dropon.parentNode); |
---|
791 | if(sortable && !sortable.ghosting) return; |
---|
792 | |
---|
793 | if(!Sortable._marker) { |
---|
794 | Sortable._marker = |
---|
795 | ($('dropmarker') || Element.extend(document.createElement('DIV'))). |
---|
796 | hide().addClassName('dropmarker').setStyle({position:'absolute'}); |
---|
797 | document.getElementsByTagName("body").item(0).appendChild(Sortable._marker); |
---|
798 | } |
---|
799 | var offsets = Position.cumulativeOffset(dropon); |
---|
800 | Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'}); |
---|
801 | |
---|
802 | if(position=='after') |
---|
803 | if(sortable.overlap == 'horizontal') |
---|
804 | Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'}); |
---|
805 | else |
---|
806 | Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'}); |
---|
807 | |
---|
808 | Sortable._marker.show(); |
---|
809 | }, |
---|
810 | |
---|
811 | _tree: function(element, options, parent) { |
---|
812 | var children = Sortable.findElements(element, options) || []; |
---|
813 | |
---|
814 | for (var i = 0; i < children.length; ++i) { |
---|
815 | var match = children[i].id.match(options.format); |
---|
816 | |
---|
817 | if (!match) continue; |
---|
818 | |
---|
819 | var child = { |
---|
820 | id: encodeURIComponent(match ? match[1] : null), |
---|
821 | element: element, |
---|
822 | parent: parent, |
---|
823 | children: [], |
---|
824 | position: parent.children.length, |
---|
825 | container: $(children[i]).down(options.treeTag) |
---|
826 | }; |
---|
827 | |
---|
828 | /* Get the element containing the children and recurse over it */ |
---|
829 | if (child.container) |
---|
830 | this._tree(child.container, options, child); |
---|
831 | |
---|
832 | parent.children.push (child); |
---|
833 | } |
---|
834 | |
---|
835 | return parent; |
---|
836 | }, |
---|
837 | |
---|
838 | tree: function(element) { |
---|
839 | element = $(element); |
---|
840 | var sortableOptions = this.options(element); |
---|
841 | var options = Object.extend({ |
---|
842 | tag: sortableOptions.tag, |
---|
843 | treeTag: sortableOptions.treeTag, |
---|
844 | only: sortableOptions.only, |
---|
845 | name: element.id, |
---|
846 | format: sortableOptions.format |
---|
847 | }, arguments[1] || {}); |
---|
848 | |
---|
849 | var root = { |
---|
850 | id: null, |
---|
851 | parent: null, |
---|
852 | children: [], |
---|
853 | container: element, |
---|
854 | position: 0 |
---|
855 | }; |
---|
856 | |
---|
857 | return Sortable._tree(element, options, root); |
---|
858 | }, |
---|
859 | |
---|
860 | /* Construct a [i] index for a particular node */ |
---|
861 | _constructIndex: function(node) { |
---|
862 | var index = ''; |
---|
863 | do { |
---|
864 | if (node.id) index = '[' + node.position + ']' + index; |
---|
865 | } while ((node = node.parent) != null); |
---|
866 | return index; |
---|
867 | }, |
---|
868 | |
---|
869 | sequence: function(element) { |
---|
870 | element = $(element); |
---|
871 | var options = Object.extend(this.options(element), arguments[1] || {}); |
---|
872 | |
---|
873 | return $(this.findElements(element, options) || []).map( function(item) { |
---|
874 | return item.id.match(options.format) ? item.id.match(options.format)[1] : ''; |
---|
875 | }); |
---|
876 | }, |
---|
877 | |
---|
878 | setSequence: function(element, new_sequence) { |
---|
879 | element = $(element); |
---|
880 | var options = Object.extend(this.options(element), arguments[2] || {}); |
---|
881 | |
---|
882 | var nodeMap = {}; |
---|
883 | this.findElements(element, options).each( function(n) { |
---|
884 | if (n.id.match(options.format)) |
---|
885 | nodeMap[n.id.match(options.format)[1]] = [n, n.parentNode]; |
---|
886 | n.parentNode.removeChild(n); |
---|
887 | }); |
---|
888 | |
---|
889 | new_sequence.each(function(ident) { |
---|
890 | var n = nodeMap[ident]; |
---|
891 | if (n) { |
---|
892 | n[1].appendChild(n[0]); |
---|
893 | delete nodeMap[ident]; |
---|
894 | } |
---|
895 | }); |
---|
896 | }, |
---|
897 | |
---|
898 | serialize: function(element) { |
---|
899 | element = $(element); |
---|
900 | var options = Object.extend(Sortable.options(element), arguments[1] || {}); |
---|
901 | var name = encodeURIComponent( |
---|
902 | (arguments[1] && arguments[1].name) ? arguments[1].name : element.id); |
---|
903 | |
---|
904 | if (options.tree) { |
---|
905 | return Sortable.tree(element, arguments[1]).children.map( function (item) { |
---|
906 | return [name + Sortable._constructIndex(item) + "[id]=" + |
---|
907 | encodeURIComponent(item.id)].concat(item.children.map(arguments.callee)); |
---|
908 | }).flatten().join('&'); |
---|
909 | } else { |
---|
910 | return Sortable.sequence(element, arguments[1]).map( function(item) { |
---|
911 | return name + "[]=" + encodeURIComponent(item); |
---|
912 | }).join('&'); |
---|
913 | } |
---|
914 | } |
---|
915 | }; |
---|
916 | |
---|
917 | // Returns true if child is contained within element |
---|
918 | Element.isParent = function(child, element) { |
---|
919 | if (!child.parentNode || child == element) return false; |
---|
920 | if (child.parentNode == element) return true; |
---|
921 | return Element.isParent(child.parentNode, element); |
---|
922 | }; |
---|
923 | |
---|
924 | Element.findChildren = function(element, only, recursive, tagName) { |
---|
925 | if(!element.hasChildNodes()) return null; |
---|
926 | tagName = tagName.toUpperCase(); |
---|
927 | if(only) only = [only].flatten(); |
---|
928 | var elements = []; |
---|
929 | $A(element.childNodes).each( function(e) { |
---|
930 | if(e.tagName && e.tagName.toUpperCase()==tagName && |
---|
931 | (!only || (Element.classNames(e).detect(function(v) { return only.include(v) })))) |
---|
932 | elements.push(e); |
---|
933 | if(recursive) { |
---|
934 | var grandchildren = Element.findChildren(e, only, recursive, tagName); |
---|
935 | if(grandchildren) elements.push(grandchildren); |
---|
936 | } |
---|
937 | }); |
---|
938 | |
---|
939 | return (elements.length>0 ? elements.flatten() : []); |
---|
940 | }; |
---|
941 | |
---|
942 | Element.offsetSize = function (element, type) { |
---|
943 | return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')]; |
---|
944 | }; |
---|