1 // script.aculo.us dragdrop.js v1.8.3, Thu Oct 08 11:23:33 +0200 2009 |
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2 |
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3 // Copyright (c) 2005-2009 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us) |
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4 // |
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5 // script.aculo.us is freely distributable under the terms of an MIT-style license. |
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6 // For details, see the script.aculo.us web site: http://script.aculo.us/ |
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7 |
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8 if(Object.isUndefined(Effect)) |
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9 throw("dragdrop.js requires including script.aculo.us' effects.js library"); |
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10 |
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11 var Droppables = { |
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12 drops: [], |
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13 |
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14 remove: function(element) { |
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15 this.drops = this.drops.reject(function(d) { return d.element==$(element) }); |
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16 }, |
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17 |
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18 add: function(element) { |
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19 element = $(element); |
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20 var options = Object.extend({ |
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21 greedy: true, |
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22 hoverclass: null, |
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23 tree: false |
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24 }, arguments[1] || { }); |
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25 |
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26 // cache containers |
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27 if(options.containment) { |
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28 options._containers = []; |
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29 var containment = options.containment; |
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30 if(Object.isArray(containment)) { |
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31 containment.each( function(c) { options._containers.push($(c)) }); |
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32 } else { |
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33 options._containers.push($(containment)); |
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34 } |
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35 } |
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36 |
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37 if(options.accept) options.accept = [options.accept].flatten(); |
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38 |
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39 Element.makePositioned(element); // fix IE |
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40 options.element = element; |
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41 |
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42 this.drops.push(options); |
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43 }, |
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44 |
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45 findDeepestChild: function(drops) { |
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46 deepest = drops[0]; |
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47 |
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48 for (i = 1; i < drops.length; ++i) |
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49 if (Element.isParent(drops[i].element, deepest.element)) |
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50 deepest = drops[i]; |
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51 |
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52 return deepest; |
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53 }, |
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54 |
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55 isContained: function(element, drop) { |
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56 var containmentNode; |
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57 if(drop.tree) { |
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58 containmentNode = element.treeNode; |
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59 } else { |
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60 containmentNode = element.parentNode; |
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61 } |
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62 return drop._containers.detect(function(c) { return containmentNode == c }); |
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63 }, |
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64 |
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65 isAffected: function(point, element, drop) { |
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66 return ( |
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67 (drop.element!=element) && |
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68 ((!drop._containers) || |
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69 this.isContained(element, drop)) && |
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70 ((!drop.accept) || |
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71 (Element.classNames(element).detect( |
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72 function(v) { return drop.accept.include(v) } ) )) && |
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73 Position.within(drop.element, point[0], point[1]) ); |
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74 }, |
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75 |
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76 deactivate: function(drop) { |
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77 if(drop.hoverclass) |
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78 Element.removeClassName(drop.element, drop.hoverclass); |
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79 this.last_active = null; |
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80 }, |
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81 |
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82 activate: function(drop) { |
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83 if(drop.hoverclass) |
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84 Element.addClassName(drop.element, drop.hoverclass); |
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85 this.last_active = drop; |
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86 }, |
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87 |
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88 show: function(point, element) { |
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89 if(!this.drops.length) return; |
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90 var drop, affected = []; |
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91 |
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92 this.drops.each( function(drop) { |
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93 if(Droppables.isAffected(point, element, drop)) |
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94 affected.push(drop); |
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95 }); |
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96 |
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97 if(affected.length>0) |
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98 drop = Droppables.findDeepestChild(affected); |
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99 |
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100 if(this.last_active && this.last_active != drop) this.deactivate(this.last_active); |
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101 if (drop) { |
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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 if (drop != this.last_active) 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 return true; |
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118 } |
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119 }, |
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120 |
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121 reset: function() { |
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122 if(this.last_active) |
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123 this.deactivate(this.last_active); |
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124 } |
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125 }; |
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126 |
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127 var Draggables = { |
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128 drags: [], |
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129 observers: [], |
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130 |
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131 register: function(draggable) { |
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132 if(this.drags.length == 0) { |
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133 this.eventMouseUp = this.endDrag.bindAsEventListener(this); |
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134 this.eventMouseMove = this.updateDrag.bindAsEventListener(this); |
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135 this.eventKeypress = this.keyPress.bindAsEventListener(this); |
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136 |
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137 Event.observe(document, "mouseup", this.eventMouseUp); |
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138 Event.observe(document, "mousemove", this.eventMouseMove); |
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139 Event.observe(document, "keypress", this.eventKeypress); |
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140 } |
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141 this.drags.push(draggable); |
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142 }, |
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143 |
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144 unregister: function(draggable) { |
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145 this.drags = this.drags.reject(function(d) { return d==draggable }); |
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146 if(this.drags.length == 0) { |
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147 Event.stopObserving(document, "mouseup", this.eventMouseUp); |
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148 Event.stopObserving(document, "mousemove", this.eventMouseMove); |
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149 Event.stopObserving(document, "keypress", this.eventKeypress); |
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150 } |
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151 }, |
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152 |
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153 activate: function(draggable) { |
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154 if(draggable.options.delay) { |
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155 this._timeout = setTimeout(function() { |
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156 Draggables._timeout = null; |
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157 window.focus(); |
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158 Draggables.activeDraggable = draggable; |
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159 }.bind(this), draggable.options.delay); |
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160 } else { |
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161 window.focus(); // allows keypress events if window isn't currently focused, fails for Safari |
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162 this.activeDraggable = draggable; |
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163 } |
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164 }, |
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165 |
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166 deactivate: function() { |
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167 this.activeDraggable = null; |
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168 }, |
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169 |
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170 updateDrag: function(event) { |
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171 if(!this.activeDraggable) return; |
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172 var pointer = [Event.pointerX(event), Event.pointerY(event)]; |
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173 // Mozilla-based browsers fire successive mousemove events with |
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174 // the same coordinates, prevent needless redrawing (moz bug?) |
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175 if(this._lastPointer && (this._lastPointer.inspect() == pointer.inspect())) return; |
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176 this._lastPointer = pointer; |
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177 |
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178 this.activeDraggable.updateDrag(event, pointer); |
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179 }, |
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180 |
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181 endDrag: function(event) { |
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182 if(this._timeout) { |
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183 clearTimeout(this._timeout); |
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184 this._timeout = null; |
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185 } |
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186 if(!this.activeDraggable) return; |
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187 this._lastPointer = null; |
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188 this.activeDraggable.endDrag(event); |
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189 this.activeDraggable = null; |
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190 }, |
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191 |
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192 keyPress: function(event) { |
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193 if(this.activeDraggable) |
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194 this.activeDraggable.keyPress(event); |
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195 }, |
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196 |
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197 addObserver: function(observer) { |
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198 this.observers.push(observer); |
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199 this._cacheObserverCallbacks(); |
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200 }, |
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201 |
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202 removeObserver: function(element) { // element instead of observer fixes mem leaks |
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203 this.observers = this.observers.reject( function(o) { return o.element==element }); |
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204 this._cacheObserverCallbacks(); |
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205 }, |
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206 |
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207 notify: function(eventName, draggable, event) { // 'onStart', 'onEnd', 'onDrag' |
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208 if(this[eventName+'Count'] > 0) |
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209 this.observers.each( function(o) { |
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210 if(o[eventName]) o[eventName](eventName, draggable, event); |
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211 }); |
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212 if(draggable.options[eventName]) draggable.options[eventName](draggable, event); |
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213 }, |
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214 |
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215 _cacheObserverCallbacks: function() { |
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216 ['onStart','onEnd','onDrag'].each( function(eventName) { |
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217 Draggables[eventName+'Count'] = Draggables.observers.select( |
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218 function(o) { return o[eventName]; } |
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219 ).length; |
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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 /*--------------------------------------------------------------------------*/ |
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225 |
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226 var Draggable = Class.create({ |
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227 initialize: function(element) { |
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228 var defaults = { |
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229 handle: false, |
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230 reverteffect: function(element, top_offset, left_offset) { |
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231 var dur = Math.sqrt(Math.abs(top_offset^2)+Math.abs(left_offset^2))*0.02; |
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232 new Effect.Move(element, { x: -left_offset, y: -top_offset, duration: dur, |
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233 queue: {scope:'_draggable', position:'end'} |
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234 }); |
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235 }, |
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236 endeffect: function(element) { |
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237 var toOpacity = Object.isNumber(element._opacity) ? element._opacity : 1.0; |
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238 new Effect.Opacity(element, {duration:0.2, from:0.7, to:toOpacity, |
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239 queue: {scope:'_draggable', position:'end'}, |
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240 afterFinish: function(){ |
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241 Draggable._dragging[element] = false |
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242 } |
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243 }); |
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244 }, |
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245 zindex: 1000, |
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246 revert: false, |
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247 quiet: 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] || Object.isUndefined(arguments[1].endeffect)) |
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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 && Object.isString(options.handle)) |
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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.options = options; |
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282 this.dragging = false; |
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283 |
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284 this.eventMouseDown = this.initDrag.bindAsEventListener(this); |
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285 Event.observe(this.handle, "mousedown", this.eventMouseDown); |
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286 |
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287 Draggables.register(this); |
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288 }, |
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289 |
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290 destroy: function() { |
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291 Event.stopObserving(this.handle, "mousedown", this.eventMouseDown); |
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292 Draggables.unregister(this); |
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293 }, |
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294 |
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295 currentDelta: function() { |
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296 return([ |
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297 parseInt(Element.getStyle(this.element,'left') || '0'), |
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298 parseInt(Element.getStyle(this.element,'top') || '0')]); |
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299 }, |
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300 |
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301 initDrag: function(event) { |
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302 if(!Object.isUndefined(Draggable._dragging[this.element]) && |
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303 Draggable._dragging[this.element]) return; |
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304 if(Event.isLeftClick(event)) { |
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305 // abort on form elements, fixes a Firefox issue |
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306 var src = Event.element(event); |
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307 if((tag_name = src.tagName.toUpperCase()) && ( |
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308 tag_name=='INPUT' || |
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309 tag_name=='SELECT' || |
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310 tag_name=='OPTION' || |
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311 tag_name=='BUTTON' || |
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312 tag_name=='TEXTAREA')) return; |
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313 |
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314 var pointer = [Event.pointerX(event), Event.pointerY(event)]; |
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315 var pos = this.element.cumulativeOffset(); |
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316 this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) }); |
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317 |
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318 Draggables.activate(this); |
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319 Event.stop(event); |
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320 } |
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321 }, |
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322 |
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323 startDrag: function(event) { |
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324 this.dragging = true; |
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325 if(!this.delta) |
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326 this.delta = this.currentDelta(); |
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327 |
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328 if(this.options.zindex) { |
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329 this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0); |
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330 this.element.style.zIndex = this.options.zindex; |
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331 } |
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332 |
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333 if(this.options.ghosting) { |
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334 this._clone = this.element.cloneNode(true); |
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335 this._originallyAbsolute = (this.element.getStyle('position') == 'absolute'); |
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336 if (!this._originallyAbsolute) |
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337 Position.absolutize(this.element); |
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338 this.element.parentNode.insertBefore(this._clone, this.element); |
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339 } |
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340 |
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341 if(this.options.scroll) { |
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342 if (this.options.scroll == window) { |
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343 var where = this._getWindowScroll(this.options.scroll); |
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344 this.originalScrollLeft = where.left; |
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345 this.originalScrollTop = where.top; |
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346 } else { |
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347 this.originalScrollLeft = this.options.scroll.scrollLeft; |
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348 this.originalScrollTop = this.options.scroll.scrollTop; |
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349 } |
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350 } |
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351 |
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352 Draggables.notify('onStart', this, event); |
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353 |
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354 if(this.options.starteffect) this.options.starteffect(this.element); |
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355 }, |
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356 |
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357 updateDrag: function(event, pointer) { |
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358 if(!this.dragging) this.startDrag(event); |
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359 |
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360 if(!this.options.quiet){ |
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361 Position.prepare(); |
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362 Droppables.show(pointer, this.element); |
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363 } |
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364 |
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365 Draggables.notify('onDrag', this, event); |
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366 |
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367 this.draw(pointer); |
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368 if(this.options.change) this.options.change(this); |
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369 |
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370 if(this.options.scroll) { |
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371 this.stopScrolling(); |
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372 |
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373 var p; |
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374 if (this.options.scroll == window) { |
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375 with(this._getWindowScroll(this.options.scroll)) { p = [ left, top, left+width, top+height ]; } |
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376 } else { |
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377 p = Position.page(this.options.scroll); |
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378 p[0] += this.options.scroll.scrollLeft + Position.deltaX; |
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379 p[1] += this.options.scroll.scrollTop + Position.deltaY; |
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380 p.push(p[0]+this.options.scroll.offsetWidth); |
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381 p.push(p[1]+this.options.scroll.offsetHeight); |
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382 } |
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383 var speed = [0,0]; |
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384 if(pointer[0] < (p[0]+this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[0]+this.options.scrollSensitivity); |
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385 if(pointer[1] < (p[1]+this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[1]+this.options.scrollSensitivity); |
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386 if(pointer[0] > (p[2]-this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[2]-this.options.scrollSensitivity); |
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387 if(pointer[1] > (p[3]-this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[3]-this.options.scrollSensitivity); |
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388 this.startScrolling(speed); |
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389 } |
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390 |
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391 // fix AppleWebKit rendering |
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392 if(Prototype.Browser.WebKit) window.scrollBy(0,0); |
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393 |
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394 Event.stop(event); |
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395 }, |
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396 |
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397 finishDrag: function(event, success) { |
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398 this.dragging = false; |
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399 |
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400 if(this.options.quiet){ |
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401 Position.prepare(); |
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402 var pointer = [Event.pointerX(event), Event.pointerY(event)]; |
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403 Droppables.show(pointer, this.element); |
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404 } |
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405 |
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406 if(this.options.ghosting) { |
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407 if (!this._originallyAbsolute) |
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408 Position.relativize(this.element); |
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409 delete this._originallyAbsolute; |
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410 Element.remove(this._clone); |
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411 this._clone = null; |
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412 } |
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413 |
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414 var dropped = false; |
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415 if(success) { |
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416 dropped = Droppables.fire(event, this.element); |
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417 if (!dropped) dropped = false; |
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418 } |
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419 if(dropped && this.options.onDropped) this.options.onDropped(this.element); |
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420 Draggables.notify('onEnd', this, event); |
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421 |
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422 var revert = this.options.revert; |
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423 if(revert && Object.isFunction(revert)) revert = revert(this.element); |
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424 |
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425 var d = this.currentDelta(); |
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426 if(revert && this.options.reverteffect) { |
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427 if (dropped == 0 || revert != 'failure') |
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428 this.options.reverteffect(this.element, |
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429 d[1]-this.delta[1], d[0]-this.delta[0]); |
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430 } else { |
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431 this.delta = d; |
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432 } |
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433 |
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434 if(this.options.zindex) |
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435 this.element.style.zIndex = this.originalZ; |
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436 |
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437 if(this.options.endeffect) |
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438 this.options.endeffect(this.element); |
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439 |
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440 Draggables.deactivate(this); |
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441 Droppables.reset(); |
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442 }, |
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443 |
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444 keyPress: function(event) { |
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445 if(event.keyCode!=Event.KEY_ESC) return; |
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446 this.finishDrag(event, false); |
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447 Event.stop(event); |
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448 }, |
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449 |
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450 endDrag: function(event) { |
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451 if(!this.dragging) return; |
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452 this.stopScrolling(); |
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453 this.finishDrag(event, true); |
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454 Event.stop(event); |
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455 }, |
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456 |
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457 draw: function(point) { |
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458 var pos = this.element.cumulativeOffset(); |
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459 if(this.options.ghosting) { |
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460 var r = Position.realOffset(this.element); |
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461 pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY; |
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462 } |
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463 |
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464 var d = this.currentDelta(); |
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465 pos[0] -= d[0]; pos[1] -= d[1]; |
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466 |
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467 if(this.options.scroll && (this.options.scroll != window && this._isScrollChild)) { |
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468 pos[0] -= this.options.scroll.scrollLeft-this.originalScrollLeft; |
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469 pos[1] -= this.options.scroll.scrollTop-this.originalScrollTop; |
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470 } |
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471 |
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472 var p = [0,1].map(function(i){ |
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473 return (point[i]-pos[i]-this.offset[i]) |
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474 }.bind(this)); |
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475 |
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476 if(this.options.snap) { |
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477 if(Object.isFunction(this.options.snap)) { |
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478 p = this.options.snap(p[0],p[1],this); |
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479 } else { |
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480 if(Object.isArray(this.options.snap)) { |
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481 p = p.map( function(v, i) { |
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482 return (v/this.options.snap[i]).round()*this.options.snap[i] }.bind(this)); |
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483 } else { |
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484 p = p.map( function(v) { |
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485 return (v/this.options.snap).round()*this.options.snap }.bind(this)); |
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486 } |
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487 }} |
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488 |
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489 var style = this.element.style; |
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490 if((!this.options.constraint) || (this.options.constraint=='horizontal')) |
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491 style.left = p[0] + "px"; |
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492 if((!this.options.constraint) || (this.options.constraint=='vertical')) |
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493 style.top = p[1] + "px"; |
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494 |
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495 if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering |
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496 }, |
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497 |
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498 stopScrolling: function() { |
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499 if(this.scrollInterval) { |
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500 clearInterval(this.scrollInterval); |
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501 this.scrollInterval = null; |
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502 Draggables._lastScrollPointer = null; |
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503 } |
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504 }, |
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505 |
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506 startScrolling: function(speed) { |
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507 if(!(speed[0] || speed[1])) return; |
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508 this.scrollSpeed = [speed[0]*this.options.scrollSpeed,speed[1]*this.options.scrollSpeed]; |
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509 this.lastScrolled = new Date(); |
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510 this.scrollInterval = setInterval(this.scroll.bind(this), 10); |
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511 }, |
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512 |
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513 scroll: function() { |
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514 var current = new Date(); |
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515 var delta = current - this.lastScrolled; |
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516 this.lastScrolled = current; |
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517 if(this.options.scroll == window) { |
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518 with (this._getWindowScroll(this.options.scroll)) { |
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519 if (this.scrollSpeed[0] || this.scrollSpeed[1]) { |
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520 var d = delta / 1000; |
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521 this.options.scroll.scrollTo( left + d*this.scrollSpeed[0], top + d*this.scrollSpeed[1] ); |
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522 } |
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523 } |
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524 } else { |
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525 this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000; |
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526 this.options.scroll.scrollTop += this.scrollSpeed[1] * delta / 1000; |
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527 } |
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528 |
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529 Position.prepare(); |
|
530 Droppables.show(Draggables._lastPointer, this.element); |
|
531 Draggables.notify('onDrag', this); |
|
532 if (this._isScrollChild) { |
|
533 Draggables._lastScrollPointer = Draggables._lastScrollPointer || $A(Draggables._lastPointer); |
|
534 Draggables._lastScrollPointer[0] += this.scrollSpeed[0] * delta / 1000; |
|
535 Draggables._lastScrollPointer[1] += this.scrollSpeed[1] * delta / 1000; |
|
536 if (Draggables._lastScrollPointer[0] < 0) |
|
537 Draggables._lastScrollPointer[0] = 0; |
|
538 if (Draggables._lastScrollPointer[1] < 0) |
|
539 Draggables._lastScrollPointer[1] = 0; |
|
540 this.draw(Draggables._lastScrollPointer); |
|
541 } |
|
542 |
|
543 if(this.options.change) this.options.change(this); |
|
544 }, |
|
545 |
|
546 _getWindowScroll: function(w) { |
|
547 var T, L, W, H; |
|
548 with (w.document) { |
|
549 if (w.document.documentElement && documentElement.scrollTop) { |
|
550 T = documentElement.scrollTop; |
|
551 L = documentElement.scrollLeft; |
|
552 } else if (w.document.body) { |
|
553 T = body.scrollTop; |
|
554 L = body.scrollLeft; |
|
555 } |
|
556 if (w.innerWidth) { |
|
557 W = w.innerWidth; |
|
558 H = w.innerHeight; |
|
559 } else if (w.document.documentElement && documentElement.clientWidth) { |
|
560 W = documentElement.clientWidth; |
|
561 H = documentElement.clientHeight; |
|
562 } else { |
|
563 W = body.offsetWidth; |
|
564 H = body.offsetHeight; |
|
565 } |
|
566 } |
|
567 return { top: T, left: L, width: W, height: H }; |
|
568 } |
|
569 }); |
|
570 |
|
571 Draggable._dragging = { }; |
|
572 |
|
573 /*--------------------------------------------------------------------------*/ |
|
574 |
|
575 var SortableObserver = Class.create({ |
|
576 initialize: function(element, observer) { |
|
577 this.element = $(element); |
|
578 this.observer = observer; |
|
579 this.lastValue = Sortable.serialize(this.element); |
|
580 }, |
|
581 |
|
582 onStart: function() { |
|
583 this.lastValue = Sortable.serialize(this.element); |
|
584 }, |
|
585 |
|
586 onEnd: function() { |
|
587 Sortable.unmark(); |
|
588 if(this.lastValue != Sortable.serialize(this.element)) |
|
589 this.observer(this.element) |
|
590 } |
|
591 }); |
|
592 |
|
593 var Sortable = { |
|
594 SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/, |
|
595 |
|
596 sortables: { }, |
|
597 |
|
598 _findRootElement: function(element) { |
|
599 while (element.tagName.toUpperCase() != "BODY") { |
|
600 if(element.id && Sortable.sortables[element.id]) return element; |
|
601 element = element.parentNode; |
|
602 } |
|
603 }, |
|
604 |
|
605 options: function(element) { |
|
606 element = Sortable._findRootElement($(element)); |
|
607 if(!element) return; |
|
608 return Sortable.sortables[element.id]; |
|
609 }, |
|
610 |
|
611 destroy: function(element){ |
|
612 element = $(element); |
|
613 var s = Sortable.sortables[element.id]; |
|
614 |
|
615 if(s) { |
|
616 Draggables.removeObserver(s.element); |
|
617 s.droppables.each(function(d){ Droppables.remove(d) }); |
|
618 s.draggables.invoke('destroy'); |
|
619 |
|
620 delete Sortable.sortables[s.element.id]; |
|
621 } |
|
622 }, |
|
623 |
|
624 create: function(element) { |
|
625 element = $(element); |
|
626 var options = Object.extend({ |
|
627 element: element, |
|
628 tag: 'li', // assumes li children, override with tag: 'tagname' |
|
629 dropOnEmpty: false, |
|
630 tree: false, |
|
631 treeTag: 'ul', |
|
632 overlap: 'vertical', // one of 'vertical', 'horizontal' |
|
633 constraint: 'vertical', // one of 'vertical', 'horizontal', false |
|
634 containment: element, // also takes array of elements (or id's); or false |
|
635 handle: false, // or a CSS class |
|
636 only: false, |
|
637 delay: 0, |
|
638 hoverclass: null, |
|
639 ghosting: false, |
|
640 quiet: false, |
|
641 scroll: false, |
|
642 scrollSensitivity: 20, |
|
643 scrollSpeed: 15, |
|
644 format: this.SERIALIZE_RULE, |
|
645 |
|
646 // these take arrays of elements or ids and can be |
|
647 // used for better initialization performance |
|
648 elements: false, |
|
649 handles: false, |
|
650 |
|
651 onChange: Prototype.emptyFunction, |
|
652 onUpdate: Prototype.emptyFunction |
|
653 }, arguments[1] || { }); |
|
654 |
|
655 // clear any old sortable with same element |
|
656 this.destroy(element); |
|
657 |
|
658 // build options for the draggables |
|
659 var options_for_draggable = { |
|
660 revert: true, |
|
661 quiet: options.quiet, |
|
662 scroll: options.scroll, |
|
663 scrollSpeed: options.scrollSpeed, |
|
664 scrollSensitivity: options.scrollSensitivity, |
|
665 delay: options.delay, |
|
666 ghosting: options.ghosting, |
|
667 constraint: options.constraint, |
|
668 handle: options.handle }; |
|
669 |
|
670 if(options.starteffect) |
|
671 options_for_draggable.starteffect = options.starteffect; |
|
672 |
|
673 if(options.reverteffect) |
|
674 options_for_draggable.reverteffect = options.reverteffect; |
|
675 else |
|
676 if(options.ghosting) options_for_draggable.reverteffect = function(element) { |
|
677 element.style.top = 0; |
|
678 element.style.left = 0; |
|
679 }; |
|
680 |
|
681 if(options.endeffect) |
|
682 options_for_draggable.endeffect = options.endeffect; |
|
683 |
|
684 if(options.zindex) |
|
685 options_for_draggable.zindex = options.zindex; |
|
686 |
|
687 // build options for the droppables |
|
688 var options_for_droppable = { |
|
689 overlap: options.overlap, |
|
690 containment: options.containment, |
|
691 tree: options.tree, |
|
692 hoverclass: options.hoverclass, |
|
693 onHover: Sortable.onHover |
|
694 }; |
|
695 |
|
696 var options_for_tree = { |
|
697 onHover: Sortable.onEmptyHover, |
|
698 overlap: options.overlap, |
|
699 containment: options.containment, |
|
700 hoverclass: options.hoverclass |
|
701 }; |
|
702 |
|
703 // fix for gecko engine |
|
704 Element.cleanWhitespace(element); |
|
705 |
|
706 options.draggables = []; |
|
707 options.droppables = []; |
|
708 |
|
709 // drop on empty handling |
|
710 if(options.dropOnEmpty || options.tree) { |
|
711 Droppables.add(element, options_for_tree); |
|
712 options.droppables.push(element); |
|
713 } |
|
714 |
|
715 (options.elements || this.findElements(element, options) || []).each( function(e,i) { |
|
716 var handle = options.handles ? $(options.handles[i]) : |
|
717 (options.handle ? $(e).select('.' + options.handle)[0] : e); |
|
718 options.draggables.push( |
|
719 new Draggable(e, Object.extend(options_for_draggable, { handle: handle }))); |
|
720 Droppables.add(e, options_for_droppable); |
|
721 if(options.tree) e.treeNode = element; |
|
722 options.droppables.push(e); |
|
723 }); |
|
724 |
|
725 if(options.tree) { |
|
726 (Sortable.findTreeElements(element, options) || []).each( function(e) { |
|
727 Droppables.add(e, options_for_tree); |
|
728 e.treeNode = element; |
|
729 options.droppables.push(e); |
|
730 }); |
|
731 } |
|
732 |
|
733 // keep reference |
|
734 this.sortables[element.identify()] = options; |
|
735 |
|
736 // for onupdate |
|
737 Draggables.addObserver(new SortableObserver(element, options.onUpdate)); |
|
738 |
|
739 }, |
|
740 |
|
741 // return all suitable-for-sortable elements in a guaranteed order |
|
742 findElements: function(element, options) { |
|
743 return Element.findChildren( |
|
744 element, options.only, options.tree ? true : false, options.tag); |
|
745 }, |
|
746 |
|
747 findTreeElements: function(element, options) { |
|
748 return Element.findChildren( |
|
749 element, options.only, options.tree ? true : false, options.treeTag); |
|
750 }, |
|
751 |
|
752 onHover: function(element, dropon, overlap) { |
|
753 if(Element.isParent(dropon, element)) return; |
|
754 |
|
755 if(overlap > .33 && overlap < .66 && Sortable.options(dropon).tree) { |
|
756 return; |
|
757 } else if(overlap>0.5) { |
|
758 Sortable.mark(dropon, 'before'); |
|
759 if(dropon.previousSibling != element) { |
|
760 var oldParentNode = element.parentNode; |
|
761 element.style.visibility = "hidden"; // fix gecko rendering |
|
762 dropon.parentNode.insertBefore(element, dropon); |
|
763 if(dropon.parentNode!=oldParentNode) |
|
764 Sortable.options(oldParentNode).onChange(element); |
|
765 Sortable.options(dropon.parentNode).onChange(element); |
|
766 } |
|
767 } else { |
|
768 Sortable.mark(dropon, 'after'); |
|
769 var nextElement = dropon.nextSibling || null; |
|
770 if(nextElement != element) { |
|
771 var oldParentNode = element.parentNode; |
|
772 element.style.visibility = "hidden"; // fix gecko rendering |
|
773 dropon.parentNode.insertBefore(element, nextElement); |
|
774 if(dropon.parentNode!=oldParentNode) |
|
775 Sortable.options(oldParentNode).onChange(element); |
|
776 Sortable.options(dropon.parentNode).onChange(element); |
|
777 } |
|
778 } |
|
779 }, |
|
780 |
|
781 onEmptyHover: function(element, dropon, overlap) { |
|
782 var oldParentNode = element.parentNode; |
|
783 var droponOptions = Sortable.options(dropon); |
|
784 |
|
785 if(!Element.isParent(dropon, element)) { |
|
786 var index; |
|
787 |
|
788 var children = Sortable.findElements(dropon, {tag: droponOptions.tag, only: droponOptions.only}); |
|
789 var child = null; |
|
790 |
|
791 if(children) { |
|
792 var offset = Element.offsetSize(dropon, droponOptions.overlap) * (1.0 - overlap); |
|
793 |
|
794 for (index = 0; index < children.length; index += 1) { |
|
795 if (offset - Element.offsetSize (children[index], droponOptions.overlap) >= 0) { |
|
796 offset -= Element.offsetSize (children[index], droponOptions.overlap); |
|
797 } else if (offset - (Element.offsetSize (children[index], droponOptions.overlap) / 2) >= 0) { |
|
798 child = index + 1 < children.length ? children[index + 1] : null; |
|
799 break; |
|
800 } else { |
|
801 child = children[index]; |
|
802 break; |
|
803 } |
|
804 } |
|
805 } |
|
806 |
|
807 dropon.insertBefore(element, child); |
|
808 |
|
809 Sortable.options(oldParentNode).onChange(element); |
|
810 droponOptions.onChange(element); |
|
811 } |
|
812 }, |
|
813 |
|
814 unmark: function() { |
|
815 if(Sortable._marker) Sortable._marker.hide(); |
|
816 }, |
|
817 |
|
818 mark: function(dropon, position) { |
|
819 // mark on ghosting only |
|
820 var sortable = Sortable.options(dropon.parentNode); |
|
821 if(sortable && !sortable.ghosting) return; |
|
822 |
|
823 if(!Sortable._marker) { |
|
824 Sortable._marker = |
|
825 ($('dropmarker') || Element.extend(document.createElement('DIV'))). |
|
826 hide().addClassName('dropmarker').setStyle({position:'absolute'}); |
|
827 document.getElementsByTagName("body").item(0).appendChild(Sortable._marker); |
|
828 } |
|
829 var offsets = dropon.cumulativeOffset(); |
|
830 Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'}); |
|
831 |
|
832 if(position=='after') |
|
833 if(sortable.overlap == 'horizontal') |
|
834 Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'}); |
|
835 else |
|
836 Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'}); |
|
837 |
|
838 Sortable._marker.show(); |
|
839 }, |
|
840 |
|
841 _tree: function(element, options, parent) { |
|
842 var children = Sortable.findElements(element, options) || []; |
|
843 |
|
844 for (var i = 0; i < children.length; ++i) { |
|
845 var match = children[i].id.match(options.format); |
|
846 |
|
847 if (!match) continue; |
|
848 |
|
849 var child = { |
|
850 id: encodeURIComponent(match ? match[1] : null), |
|
851 element: element, |
|
852 parent: parent, |
|
853 children: [], |
|
854 position: parent.children.length, |
|
855 container: $(children[i]).down(options.treeTag) |
|
856 }; |
|
857 |
|
858 /* Get the element containing the children and recurse over it */ |
|
859 if (child.container) |
|
860 this._tree(child.container, options, child); |
|
861 |
|
862 parent.children.push (child); |
|
863 } |
|
864 |
|
865 return parent; |
|
866 }, |
|
867 |
|
868 tree: function(element) { |
|
869 element = $(element); |
|
870 var sortableOptions = this.options(element); |
|
871 var options = Object.extend({ |
|
872 tag: sortableOptions.tag, |
|
873 treeTag: sortableOptions.treeTag, |
|
874 only: sortableOptions.only, |
|
875 name: element.id, |
|
876 format: sortableOptions.format |
|
877 }, arguments[1] || { }); |
|
878 |
|
879 var root = { |
|
880 id: null, |
|
881 parent: null, |
|
882 children: [], |
|
883 container: element, |
|
884 position: 0 |
|
885 }; |
|
886 |
|
887 return Sortable._tree(element, options, root); |
|
888 }, |
|
889 |
|
890 /* Construct a [i] index for a particular node */ |
|
891 _constructIndex: function(node) { |
|
892 var index = ''; |
|
893 do { |
|
894 if (node.id) index = '[' + node.position + ']' + index; |
|
895 } while ((node = node.parent) != null); |
|
896 return index; |
|
897 }, |
|
898 |
|
899 sequence: function(element) { |
|
900 element = $(element); |
|
901 var options = Object.extend(this.options(element), arguments[1] || { }); |
|
902 |
|
903 return $(this.findElements(element, options) || []).map( function(item) { |
|
904 return item.id.match(options.format) ? item.id.match(options.format)[1] : ''; |
|
905 }); |
|
906 }, |
|
907 |
|
908 setSequence: function(element, new_sequence) { |
|
909 element = $(element); |
|
910 var options = Object.extend(this.options(element), arguments[2] || { }); |
|
911 |
|
912 var nodeMap = { }; |
|
913 this.findElements(element, options).each( function(n) { |
|
914 if (n.id.match(options.format)) |
|
915 nodeMap[n.id.match(options.format)[1]] = [n, n.parentNode]; |
|
916 n.parentNode.removeChild(n); |
|
917 }); |
|
918 |
|
919 new_sequence.each(function(ident) { |
|
920 var n = nodeMap[ident]; |
|
921 if (n) { |
|
922 n[1].appendChild(n[0]); |
|
923 delete nodeMap[ident]; |
|
924 } |
|
925 }); |
|
926 }, |
|
927 |
|
928 serialize: function(element) { |
|
929 element = $(element); |
|
930 var options = Object.extend(Sortable.options(element), arguments[1] || { }); |
|
931 var name = encodeURIComponent( |
|
932 (arguments[1] && arguments[1].name) ? arguments[1].name : element.id); |
|
933 |
|
934 if (options.tree) { |
|
935 return Sortable.tree(element, arguments[1]).children.map( function (item) { |
|
936 return [name + Sortable._constructIndex(item) + "[id]=" + |
|
937 encodeURIComponent(item.id)].concat(item.children.map(arguments.callee)); |
|
938 }).flatten().join('&'); |
|
939 } else { |
|
940 return Sortable.sequence(element, arguments[1]).map( function(item) { |
|
941 return name + "[]=" + encodeURIComponent(item); |
|
942 }).join('&'); |
|
943 } |
|
944 } |
|
945 }; |
|
946 |
|
947 // Returns true if child is contained within element |
|
948 Element.isParent = function(child, element) { |
|
949 if (!child.parentNode || child == element) return false; |
|
950 if (child.parentNode == element) return true; |
|
951 return Element.isParent(child.parentNode, element); |
|
952 }; |
|
953 |
|
954 Element.findChildren = function(element, only, recursive, tagName) { |
|
955 if(!element.hasChildNodes()) return null; |
|
956 tagName = tagName.toUpperCase(); |
|
957 if(only) only = [only].flatten(); |
|
958 var elements = []; |
|
959 $A(element.childNodes).each( function(e) { |
|
960 if(e.tagName && e.tagName.toUpperCase()==tagName && |
|
961 (!only || (Element.classNames(e).detect(function(v) { return only.include(v) })))) |
|
962 elements.push(e); |
|
963 if(recursive) { |
|
964 var grandchildren = Element.findChildren(e, only, recursive, tagName); |
|
965 if(grandchildren) elements.push(grandchildren); |
|
966 } |
|
967 }); |
|
968 |
|
969 return (elements.length>0 ? elements.flatten() : []); |
|
970 }; |
|
971 |
|
972 Element.offsetSize = function (element, type) { |
|
973 return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')]; |
|
974 }; |
|