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1 /* |
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2 * jQuery UI Draggable 1.6 |
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3 * |
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4 * Copyright (c) 2008 AUTHORS.txt (http://ui.jquery.com/about) |
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5 * Dual licensed under the MIT (MIT-LICENSE.txt) |
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6 * and GPL (GPL-LICENSE.txt) licenses. |
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7 * |
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8 * http://docs.jquery.com/UI/Draggables |
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9 * |
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10 * Depends: |
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11 * ui.core.js |
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12 */ |
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13 (function($) { |
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14 |
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15 $.widget("ui.draggable", $.extend({}, $.ui.mouse, { |
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16 |
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17 _init: function() { |
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18 |
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19 if (this.options.helper == 'original' && !(/^(?:r|a|f)/).test(this.element.css("position"))) |
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20 this.element[0].style.position = 'relative'; |
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21 |
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22 (this.options.cssNamespace && this.element.addClass(this.options.cssNamespace+"-draggable")); |
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23 (this.options.disabled && this.element.addClass('ui-draggable-disabled')); |
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24 |
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25 this._mouseInit(); |
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26 |
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27 }, |
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28 |
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29 destroy: function() { |
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30 if(!this.element.data('draggable')) return; |
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31 this.element.removeData("draggable").unbind(".draggable").removeClass('ui-draggable ui-draggable-dragging ui-draggable-disabled'); |
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32 this._mouseDestroy(); |
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33 }, |
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34 |
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35 _mouseCapture: function(event) { |
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36 |
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37 var o = this.options; |
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38 |
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39 if (this.helper || o.disabled || $(event.target).is('.ui-resizable-handle')) |
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40 return false; |
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41 |
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42 //Quit if we're not on a valid handle |
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43 this.handle = this._getHandle(event); |
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44 if (!this.handle) |
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45 return false; |
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46 |
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47 return true; |
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48 |
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49 }, |
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50 |
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51 _mouseStart: function(event) { |
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52 |
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53 var o = this.options; |
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54 |
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55 //Create and append the visible helper |
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56 this.helper = this._createHelper(event); |
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57 |
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58 //Cache the helper size |
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59 this._cacheHelperProportions(); |
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60 |
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61 //If ddmanager is used for droppables, set the global draggable |
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62 if($.ui.ddmanager) |
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63 $.ui.ddmanager.current = this; |
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64 |
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65 /* |
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66 * - Position generation - |
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67 * This block generates everything position related - it's the core of draggables. |
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68 */ |
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69 |
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70 //Cache the margins of the original element |
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71 this._cacheMargins(); |
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72 |
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73 //Store the helper's css position |
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74 this.cssPosition = this.helper.css("position"); |
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75 this.scrollParent = this.helper.scrollParent(); |
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76 |
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77 //The element's absolute position on the page minus margins |
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78 this.offset = this.element.offset(); |
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79 this.offset = { |
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80 top: this.offset.top - this.margins.top, |
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81 left: this.offset.left - this.margins.left |
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82 }; |
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83 |
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84 $.extend(this.offset, { |
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85 click: { //Where the click happened, relative to the element |
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86 left: event.pageX - this.offset.left, |
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87 top: event.pageY - this.offset.top |
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88 }, |
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89 parent: this._getParentOffset(), |
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90 relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper |
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91 }); |
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92 |
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93 //Adjust the mouse offset relative to the helper if 'cursorAt' is supplied |
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94 if(o.cursorAt) |
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95 this._adjustOffsetFromHelper(o.cursorAt); |
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96 |
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97 //Generate the original position |
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98 this.originalPosition = this._generatePosition(event); |
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99 |
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100 //Set a containment if given in the options |
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101 if(o.containment) |
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102 this._setContainment(); |
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103 |
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104 //Call plugins and callbacks |
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105 this._propagate("start", event); |
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106 |
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107 //Recache the helper size |
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108 this._cacheHelperProportions(); |
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109 |
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110 //Prepare the droppable offsets |
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111 if ($.ui.ddmanager && !o.dropBehaviour) |
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112 $.ui.ddmanager.prepareOffsets(this, event); |
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113 |
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114 this.helper.addClass("ui-draggable-dragging"); |
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115 this._mouseDrag(event, true); //Execute the drag once - this causes the helper not to be visible before getting its correct position |
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116 return true; |
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117 }, |
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118 |
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119 _mouseDrag: function(event, noPropagation) { |
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120 |
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121 //Compute the helpers position |
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122 this.position = this._generatePosition(event); |
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123 this.positionAbs = this._convertPositionTo("absolute"); |
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124 |
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125 //Call plugins and callbacks and use the resulting position if something is returned |
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126 if(!noPropagation) this.position = this._propagate("drag", event) || this.position; |
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127 |
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128 if(!this.options.axis || this.options.axis != "y") this.helper[0].style.left = this.position.left+'px'; |
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129 if(!this.options.axis || this.options.axis != "x") this.helper[0].style.top = this.position.top+'px'; |
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130 if($.ui.ddmanager) $.ui.ddmanager.drag(this, event); |
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131 |
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132 return false; |
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133 }, |
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134 |
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135 _mouseStop: function(event) { |
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136 |
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137 //If we are using droppables, inform the manager about the drop |
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138 var dropped = false; |
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139 if ($.ui.ddmanager && !this.options.dropBehaviour) |
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140 var dropped = $.ui.ddmanager.drop(this, event); |
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141 |
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142 if((this.options.revert == "invalid" && !dropped) || (this.options.revert == "valid" && dropped) || this.options.revert === true || ($.isFunction(this.options.revert) && this.options.revert.call(this.element, dropped))) { |
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143 var self = this; |
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144 $(this.helper).animate(this.originalPosition, parseInt(this.options.revertDuration, 10), function() { |
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145 self._propagate("stop", event); |
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146 self._clear(); |
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147 }); |
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148 } else { |
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149 this._propagate("stop", event); |
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150 this._clear(); |
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151 } |
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152 |
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153 return false; |
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154 }, |
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155 |
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156 _getHandle: function(event) { |
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157 |
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158 var handle = !this.options.handle || !$(this.options.handle, this.element).length ? true : false; |
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159 $(this.options.handle, this.element) |
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160 .find("*") |
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161 .andSelf() |
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162 .each(function() { |
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163 if(this == event.target) handle = true; |
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164 }); |
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165 |
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166 return handle; |
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167 |
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168 }, |
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169 |
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170 _createHelper: function(event) { |
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171 |
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172 var o = this.options; |
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173 var helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [event])) : (o.helper == 'clone' ? this.element.clone() : this.element); |
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174 |
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175 if(!helper.parents('body').length) |
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176 helper.appendTo((o.appendTo == 'parent' ? this.element[0].parentNode : o.appendTo)); |
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177 |
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178 if(helper[0] != this.element[0] && !(/(fixed|absolute)/).test(helper.css("position"))) |
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179 helper.css("position", "absolute"); |
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180 |
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181 return helper; |
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182 |
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183 }, |
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184 |
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185 _adjustOffsetFromHelper: function(obj) { |
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186 if(obj.left != undefined) this.offset.click.left = obj.left + this.margins.left; |
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187 if(obj.right != undefined) this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left; |
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188 if(obj.top != undefined) this.offset.click.top = obj.top + this.margins.top; |
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189 if(obj.bottom != undefined) this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top; |
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190 }, |
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191 |
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192 _getParentOffset: function() { |
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193 |
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194 this.offsetParent = this.helper.offsetParent(); var po = this.offsetParent.offset(); //Get the offsetParent and cache its position |
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195 |
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196 if((this.offsetParent[0] == document.body && $.browser.mozilla) //Ugly FF3 fix |
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197 || (this.offsetParent[0].tagName && this.offsetParent[0].tagName.toLowerCase() == 'html' && $.browser.msie)) //Ugly IE fix |
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198 po = { top: 0, left: 0 }; |
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199 |
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200 return { |
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201 top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0), |
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202 left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0) |
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203 }; |
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204 |
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205 }, |
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206 |
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207 _getRelativeOffset: function() { |
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208 |
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209 if(this.cssPosition == "relative") { |
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210 var p = this.element.position(); |
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211 return { |
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212 top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.scrollParent.scrollTop(), |
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213 left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.scrollParent.scrollLeft() |
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214 }; |
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215 } else { |
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216 return { top: 0, left: 0 }; |
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217 } |
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218 |
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219 }, |
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220 |
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221 _cacheMargins: function() { |
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222 this.margins = { |
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223 left: (parseInt(this.element.css("marginLeft"),10) || 0), |
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224 top: (parseInt(this.element.css("marginTop"),10) || 0) |
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225 }; |
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226 }, |
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227 |
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228 _cacheHelperProportions: function() { |
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229 this.helperProportions = { |
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230 width: this.helper.outerWidth(), |
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231 height: this.helper.outerHeight() |
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232 }; |
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233 }, |
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234 |
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235 _setContainment: function() { |
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236 |
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237 var o = this.options; |
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238 if(o.containment == 'parent') o.containment = this.helper[0].parentNode; |
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239 if(o.containment == 'document' || o.containment == 'window') this.containment = [ |
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240 0 - this.offset.relative.left - this.offset.parent.left, |
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241 0 - this.offset.relative.top - this.offset.parent.top, |
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242 $(o.containment == 'document' ? document : window).width() - this.offset.relative.left - this.offset.parent.left - this.helperProportions.width - this.margins.left - (parseInt(this.element.css("marginRight"),10) || 0), |
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243 ($(o.containment == 'document' ? document : window).height() || document.body.parentNode.scrollHeight) - this.offset.relative.top - this.offset.parent.top - this.helperProportions.height - this.margins.top - (parseInt(this.element.css("marginBottom"),10) || 0) |
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244 ]; |
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245 |
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246 if(!(/^(document|window|parent)$/).test(o.containment)) { |
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247 var ce = $(o.containment)[0]; |
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248 var co = $(o.containment).offset(); |
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249 var over = ($(ce).css("overflow") != 'hidden'); |
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250 |
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251 this.containment = [ |
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252 co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) - this.offset.relative.left - this.offset.parent.left - this.margins.left, |
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253 co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) - this.offset.relative.top - this.offset.parent.top - this.margins.top, |
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254 co.left+(over ? Math.max(ce.scrollWidth,ce.offsetWidth) : ce.offsetWidth) - (parseInt($(ce).css("borderLeftWidth"),10) || 0) - this.offset.relative.left - this.offset.parent.left - this.helperProportions.width - this.margins.left, |
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255 co.top+(over ? Math.max(ce.scrollHeight,ce.offsetHeight) : ce.offsetHeight) - (parseInt($(ce).css("borderTopWidth"),10) || 0) - this.offset.relative.top - this.offset.parent.top - this.helperProportions.height - this.margins.top |
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256 ]; |
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257 } |
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258 |
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259 }, |
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260 |
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261 _convertPositionTo: function(d, pos) { |
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262 |
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263 if(!pos) pos = this.position; |
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264 var mod = d == "absolute" ? 1 : -1; |
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265 var scroll = this[(this.cssPosition == 'absolute' ? 'offset' : 'scroll')+'Parent'], scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName); |
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266 |
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267 return { |
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268 top: ( |
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269 pos.top // the calculated relative position |
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270 + this.offset.relative.top * mod // Only for relative positioned nodes: Relative offset from element to offset parent |
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271 + this.offset.parent.top * mod // The offsetParent's offset without borders (offset + border) |
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272 + ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) * mod |
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273 + this.margins.top * mod //Add the margin (you don't want the margin counting in intersection methods) |
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274 ), |
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275 left: ( |
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276 pos.left // the calculated relative position |
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277 + this.offset.relative.left * mod // Only for relative positioned nodes: Relative offset from element to offset parent |
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278 + this.offset.parent.left * mod // The offsetParent's offset without borders (offset + border) |
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279 + ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : ( scrollIsRootNode ? 0 : scroll.scrollLeft() ) ) * mod |
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280 + this.margins.left * mod //Add the margin (you don't want the margin counting in intersection methods) |
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281 ) |
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282 }; |
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283 }, |
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284 |
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285 _generatePosition: function(event) { |
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286 |
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287 var o = this.options, scroll = this[(this.cssPosition == 'absolute' ? 'offset' : 'scroll')+'Parent'], scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName); |
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288 |
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289 var position = { |
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290 top: ( |
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291 event.pageY // The absolute mouse position |
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292 - this.offset.click.top // Click offset (relative to the element) |
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293 - this.offset.relative.top // Only for relative positioned nodes: Relative offset from element to offset parent |
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294 - this.offset.parent.top // The offsetParent's offset without borders (offset + border) |
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295 + ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) |
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296 ), |
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297 left: ( |
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298 event.pageX // The absolute mouse position |
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299 - this.offset.click.left // Click offset (relative to the element) |
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300 - this.offset.relative.left // Only for relative positioned nodes: Relative offset from element to offset parent |
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301 - this.offset.parent.left // The offsetParent's offset without borders (offset + border) |
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302 + ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ) |
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303 ) |
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304 }; |
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305 |
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306 if(!this.originalPosition) return position; //If we are not dragging yet, we won't check for options |
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307 |
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308 /* |
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309 * - Position constraining - |
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310 * Constrain the position to a mix of grid, containment. |
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311 */ |
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312 if(this.containment) { |
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313 if(position.left < this.containment[0]) position.left = this.containment[0]; |
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314 if(position.top < this.containment[1]) position.top = this.containment[1]; |
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315 if(position.left > this.containment[2]) position.left = this.containment[2]; |
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316 if(position.top > this.containment[3]) position.top = this.containment[3]; |
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317 } |
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318 |
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319 if(o.grid) { |
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320 var top = this.originalPosition.top + Math.round((position.top - this.originalPosition.top) / o.grid[1]) * o.grid[1]; |
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321 position.top = this.containment ? (!(top < this.containment[1] || top > this.containment[3]) ? top : (!(top < this.containment[1]) ? top - o.grid[1] : top + o.grid[1])) : top; |
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322 |
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323 var left = this.originalPosition.left + Math.round((position.left - this.originalPosition.left) / o.grid[0]) * o.grid[0]; |
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324 position.left = this.containment ? (!(left < this.containment[0] || left > this.containment[2]) ? left : (!(left < this.containment[0]) ? left - o.grid[0] : left + o.grid[0])) : left; |
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325 } |
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326 |
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327 return position; |
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328 }, |
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329 |
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330 _clear: function() { |
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331 this.helper.removeClass("ui-draggable-dragging"); |
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332 if(this.helper[0] != this.element[0] && !this.cancelHelperRemoval) this.helper.remove(); |
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333 //if($.ui.ddmanager) $.ui.ddmanager.current = null; |
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334 this.helper = null; |
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335 this.cancelHelperRemoval = false; |
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336 }, |
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337 |
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338 // From now on bulk stuff - mainly helpers |
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339 |
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340 _propagate: function(n, event) { |
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341 $.ui.plugin.call(this, n, [event, this._uiHash()]); |
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342 if(n == "drag") this.positionAbs = this._convertPositionTo("absolute"); //The absolute position has to be recalculated after plugins |
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343 return this.element.triggerHandler(n == "drag" ? n : "drag"+n, [event, this._uiHash()], this.options[n]); |
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344 }, |
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345 |
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346 plugins: {}, |
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347 |
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348 _uiHash: function(event) { |
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349 return { |
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350 helper: this.helper, |
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351 position: this.position, |
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352 absolutePosition: this.positionAbs, |
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353 options: this.options |
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354 }; |
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355 } |
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356 |
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357 })); |
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358 |
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359 $.extend($.ui.draggable, { |
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360 version: "1.6", |
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361 defaults: { |
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362 appendTo: "parent", |
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363 axis: false, |
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364 cancel: ":input", |
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365 connectToSortable: false, |
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366 containment: false, |
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367 cssNamespace: "ui", |
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368 cursor: "default", |
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369 cursorAt: null, |
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370 delay: 0, |
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371 distance: 1, |
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372 grid: false, |
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373 handle: false, |
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374 helper: "original", |
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375 iframeFix: false, |
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376 opacity: 1, |
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377 refreshPositions: false, |
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378 revert: false, |
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379 revertDuration: 500, |
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380 scope: "default", |
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381 scroll: true, |
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382 scrollSensitivity: 20, |
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383 scrollSpeed: 20, |
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384 snap: false, |
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385 snapMode: "both", |
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386 snapTolerance: 20, |
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387 stack: false, |
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388 zIndex: null |
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389 } |
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390 }); |
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391 |
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392 $.ui.plugin.add("draggable", "connectToSortable", { |
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393 start: function(event, ui) { |
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394 |
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395 var inst = $(this).data("draggable"); |
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396 inst.sortables = []; |
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397 $(ui.options.connectToSortable).each(function() { |
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398 // 'this' points to a string, and should therefore resolved as query, but instead, if the string is assigned to a variable, it loops through the strings properties, |
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399 // so we have to append '' to make it anonymous again |
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400 $(this+'').each(function() { |
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401 if($.data(this, 'sortable')) { |
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402 var sortable = $.data(this, 'sortable'); |
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403 inst.sortables.push({ |
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404 instance: sortable, |
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405 shouldRevert: sortable.options.revert |
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406 }); |
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407 sortable._refreshItems(); //Do a one-time refresh at start to refresh the containerCache |
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408 sortable._propagate("activate", event, inst); |
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409 } |
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410 }); |
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411 }); |
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412 |
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413 }, |
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414 stop: function(event, ui) { |
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415 |
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416 //If we are still over the sortable, we fake the stop event of the sortable, but also remove helper |
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417 var inst = $(this).data("draggable"); |
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418 |
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419 $.each(inst.sortables, function() { |
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420 if(this.instance.isOver) { |
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421 this.instance.isOver = 0; |
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422 inst.cancelHelperRemoval = true; //Don't remove the helper in the draggable instance |
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423 this.instance.cancelHelperRemoval = false; //Remove it in the sortable instance (so sortable plugins like revert still work) |
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424 if(this.shouldRevert) this.instance.options.revert = true; //revert here |
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425 this.instance._mouseStop(event); |
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426 |
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427 //Also propagate receive event, since the sortable is actually receiving a element |
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428 this.instance.element.triggerHandler("sortreceive", [event, $.extend(this.instance._ui(), { sender: inst.element })], this.instance.options["receive"]); |
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429 |
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430 this.instance.options.helper = this.instance.options._helper; |
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431 |
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432 if(inst.options.helper == 'original') { |
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433 this.instance.currentItem.css({ top: 'auto', left: 'auto' }); |
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434 } |
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435 |
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436 } else { |
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437 this.instance.cancelHelperRemoval = false; //Remove the helper in the sortable instance |
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438 this.instance._propagate("deactivate", event, inst); |
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439 } |
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440 |
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441 }); |
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442 |
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443 }, |
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444 drag: function(event, ui) { |
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445 |
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446 var inst = $(this).data("draggable"), self = this; |
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447 |
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448 var checkPos = function(o) { |
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449 var dyClick = this.offset.click.top, dxClick = this.offset.click.left; |
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450 var helperTop = this.positionAbs.top, helperLeft = this.positionAbs.left; |
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451 var itemHeight = o.height, itemWidth = o.width; |
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452 var itemTop = o.top, itemLeft = o.left; |
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453 |
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454 return $.ui.isOver(helperTop + dyClick, helperLeft + dxClick, itemTop, itemLeft, itemHeight, itemWidth); |
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455 }; |
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456 |
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457 $.each(inst.sortables, function(i) { |
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458 |
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459 if(checkPos.call(inst, this.instance.containerCache)) { |
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460 |
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461 //If it intersects, we use a little isOver variable and set it once, so our move-in stuff gets fired only once |
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462 if(!this.instance.isOver) { |
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463 this.instance.isOver = 1; |
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464 //Now we fake the start of dragging for the sortable instance, |
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465 //by cloning the list group item, appending it to the sortable and using it as inst.currentItem |
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466 //We can then fire the start event of the sortable with our passed browser event, and our own helper (so it doesn't create a new one) |
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467 this.instance.currentItem = $(self).clone().appendTo(this.instance.element).data("sortable-item", true); |
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468 this.instance.options._helper = this.instance.options.helper; //Store helper option to later restore it |
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469 this.instance.options.helper = function() { return ui.helper[0]; }; |
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470 |
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471 event.target = this.instance.currentItem[0]; |
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472 this.instance._mouseCapture(event, true); |
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473 this.instance._mouseStart(event, true, true); |
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474 |
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475 //Because the browser event is way off the new appended portlet, we modify a couple of variables to reflect the changes |
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476 this.instance.offset.click.top = inst.offset.click.top; |
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477 this.instance.offset.click.left = inst.offset.click.left; |
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478 this.instance.offset.parent.left -= inst.offset.parent.left - this.instance.offset.parent.left; |
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479 this.instance.offset.parent.top -= inst.offset.parent.top - this.instance.offset.parent.top; |
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480 |
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481 inst._propagate("toSortable", event); |
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482 |
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483 } |
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484 |
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485 //Provided we did all the previous steps, we can fire the drag event of the sortable on every draggable drag, when it intersects with the sortable |
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486 if(this.instance.currentItem) this.instance._mouseDrag(event); |
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487 |
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488 } else { |
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489 |
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490 //If it doesn't intersect with the sortable, and it intersected before, |
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491 //we fake the drag stop of the sortable, but make sure it doesn't remove the helper by using cancelHelperRemoval |
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492 if(this.instance.isOver) { |
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493 this.instance.isOver = 0; |
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494 this.instance.cancelHelperRemoval = true; |
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495 this.instance.options.revert = false; //No revert here |
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496 this.instance._mouseStop(event, true); |
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497 this.instance.options.helper = this.instance.options._helper; |
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498 |
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499 //Now we remove our currentItem, the list group clone again, and the placeholder, and animate the helper back to it's original size |
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500 this.instance.currentItem.remove(); |
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501 if(this.instance.placeholder) this.instance.placeholder.remove(); |
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502 |
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503 inst._propagate("fromSortable", event); |
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504 } |
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505 |
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506 }; |
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507 |
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508 }); |
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509 |
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510 } |
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511 }); |
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512 |
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513 $.ui.plugin.add("draggable", "cursor", { |
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514 start: function(event, ui) { |
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515 var t = $('body'); |
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516 if (t.css("cursor")) ui.options._cursor = t.css("cursor"); |
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517 t.css("cursor", ui.options.cursor); |
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518 }, |
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519 stop: function(event, ui) { |
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520 if (ui.options._cursor) $('body').css("cursor", ui.options._cursor); |
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521 } |
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522 }); |
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523 |
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524 $.ui.plugin.add("draggable", "iframeFix", { |
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525 start: function(event, ui) { |
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526 $(ui.options.iframeFix === true ? "iframe" : ui.options.iframeFix).each(function() { |
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527 $('<div class="ui-draggable-iframeFix" style="background: #fff;"></div>') |
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528 .css({ |
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529 width: this.offsetWidth+"px", height: this.offsetHeight+"px", |
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530 position: "absolute", opacity: "0.001", zIndex: 1000 |
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531 }) |
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532 .css($(this).offset()) |
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533 .appendTo("body"); |
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534 }); |
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535 }, |
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536 stop: function(event, ui) { |
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537 $("div.ui-draggable-iframeFix").each(function() { this.parentNode.removeChild(this); }); //Remove frame helpers |
|
538 } |
|
539 }); |
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540 |
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541 $.ui.plugin.add("draggable", "opacity", { |
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542 start: function(event, ui) { |
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543 var t = $(ui.helper); |
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544 if(t.css("opacity")) ui.options._opacity = t.css("opacity"); |
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545 t.css('opacity', ui.options.opacity); |
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546 }, |
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547 stop: function(event, ui) { |
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548 if(ui.options._opacity) $(ui.helper).css('opacity', ui.options._opacity); |
|
549 } |
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550 }); |
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551 |
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552 $.ui.plugin.add("draggable", "scroll", { |
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553 start: function(event, ui) { |
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554 var o = ui.options; |
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555 var i = $(this).data("draggable"); |
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556 |
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557 if(i.scrollParent[0] != document && i.scrollParent[0].tagName != 'HTML') i.overflowOffset = i.scrollParent.offset(); |
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558 |
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559 }, |
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560 drag: function(event, ui) { |
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561 |
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562 var o = ui.options, scrolled = false; |
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563 var i = $(this).data("draggable"); |
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564 |
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565 if(i.scrollParent[0] != document && i.scrollParent[0].tagName != 'HTML') { |
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566 |
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567 if((i.overflowOffset.top + i.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity) |
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568 i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop + o.scrollSpeed; |
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569 else if(event.pageY - i.overflowOffset.top < o.scrollSensitivity) |
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570 i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop - o.scrollSpeed; |
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571 |
|
572 if((i.overflowOffset.left + i.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity) |
|
573 i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft + o.scrollSpeed; |
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574 else if(event.pageX - i.overflowOffset.left < o.scrollSensitivity) |
|
575 i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft - o.scrollSpeed; |
|
576 |
|
577 } else { |
|
578 |
|
579 if(event.pageY - $(document).scrollTop() < o.scrollSensitivity) |
|
580 scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed); |
|
581 else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity) |
|
582 scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed); |
|
583 |
|
584 if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity) |
|
585 scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed); |
|
586 else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity) |
|
587 scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed); |
|
588 |
|
589 } |
|
590 |
|
591 if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour) |
|
592 $.ui.ddmanager.prepareOffsets(i, event); |
|
593 |
|
594 |
|
595 |
|
596 // This is a special case where we need to modify a offset calculated on start, since the following happened: |
|
597 // 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent |
|
598 // 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that |
|
599 // the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag |
|
600 if(scrolled !== false && i.cssPosition == 'absolute' && i.scrollParent[0] != document && $.ui.contains(i.scrollParent[0], i.offsetParent[0])) { |
|
601 i.offset.parent = i._getParentOffset(); |
|
602 |
|
603 } |
|
604 |
|
605 // This is another very weird special case that only happens for relative elements: |
|
606 // 1. If the css position is relative |
|
607 // 2. and the scroll parent is the document or similar to the offset parent |
|
608 // we have to refresh the relative offset during the scroll so there are no jumps |
|
609 if(scrolled !== false && i.cssPosition == 'relative' && !(i.scrollParent[0] != document && i.scrollParent[0] != i.offsetParent[0])) { |
|
610 i.offset.relative = i._getRelativeOffset(); |
|
611 } |
|
612 |
|
613 |
|
614 } |
|
615 }); |
|
616 |
|
617 $.ui.plugin.add("draggable", "snap", { |
|
618 start: function(event, ui) { |
|
619 |
|
620 var inst = $(this).data("draggable"); |
|
621 inst.snapElements = []; |
|
622 |
|
623 $(ui.options.snap.constructor != String ? ( ui.options.snap.items || ':data(draggable)' ) : ui.options.snap).each(function() { |
|
624 var $t = $(this); var $o = $t.offset(); |
|
625 if(this != inst.element[0]) inst.snapElements.push({ |
|
626 item: this, |
|
627 width: $t.outerWidth(), height: $t.outerHeight(), |
|
628 top: $o.top, left: $o.left |
|
629 }); |
|
630 }); |
|
631 |
|
632 }, |
|
633 drag: function(event, ui) { |
|
634 |
|
635 var inst = $(this).data("draggable"); |
|
636 var d = ui.options.snapTolerance; |
|
637 |
|
638 var x1 = ui.absolutePosition.left, x2 = x1 + inst.helperProportions.width, |
|
639 y1 = ui.absolutePosition.top, y2 = y1 + inst.helperProportions.height; |
|
640 |
|
641 for (var i = inst.snapElements.length - 1; i >= 0; i--){ |
|
642 |
|
643 var l = inst.snapElements[i].left, r = l + inst.snapElements[i].width, |
|
644 t = inst.snapElements[i].top, b = t + inst.snapElements[i].height; |
|
645 |
|
646 //Yes, I know, this is insane ;) |
|
647 if(!((l-d < x1 && x1 < r+d && t-d < y1 && y1 < b+d) || (l-d < x1 && x1 < r+d && t-d < y2 && y2 < b+d) || (l-d < x2 && x2 < r+d && t-d < y1 && y1 < b+d) || (l-d < x2 && x2 < r+d && t-d < y2 && y2 < b+d))) { |
|
648 if(inst.snapElements[i].snapping) (inst.options.snap.release && inst.options.snap.release.call(inst.element, event, $.extend(inst._uiHash(), { snapItem: inst.snapElements[i].item }))); |
|
649 inst.snapElements[i].snapping = false; |
|
650 continue; |
|
651 } |
|
652 |
|
653 if(ui.options.snapMode != 'inner') { |
|
654 var ts = Math.abs(t - y2) <= d; |
|
655 var bs = Math.abs(b - y1) <= d; |
|
656 var ls = Math.abs(l - x2) <= d; |
|
657 var rs = Math.abs(r - x1) <= d; |
|
658 if(ts) ui.position.top = inst._convertPositionTo("relative", { top: t - inst.helperProportions.height, left: 0 }).top; |
|
659 if(bs) ui.position.top = inst._convertPositionTo("relative", { top: b, left: 0 }).top; |
|
660 if(ls) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l - inst.helperProportions.width }).left; |
|
661 if(rs) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r }).left; |
|
662 } |
|
663 |
|
664 var first = (ts || bs || ls || rs); |
|
665 |
|
666 if(ui.options.snapMode != 'outer') { |
|
667 var ts = Math.abs(t - y1) <= d; |
|
668 var bs = Math.abs(b - y2) <= d; |
|
669 var ls = Math.abs(l - x1) <= d; |
|
670 var rs = Math.abs(r - x2) <= d; |
|
671 if(ts) ui.position.top = inst._convertPositionTo("relative", { top: t, left: 0 }).top; |
|
672 if(bs) ui.position.top = inst._convertPositionTo("relative", { top: b - inst.helperProportions.height, left: 0 }).top; |
|
673 if(ls) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l }).left; |
|
674 if(rs) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r - inst.helperProportions.width }).left; |
|
675 } |
|
676 |
|
677 if(!inst.snapElements[i].snapping && (ts || bs || ls || rs || first)) |
|
678 (inst.options.snap.snap && inst.options.snap.snap.call(inst.element, event, $.extend(inst._uiHash(), { snapItem: inst.snapElements[i].item }))); |
|
679 inst.snapElements[i].snapping = (ts || bs || ls || rs || first); |
|
680 |
|
681 }; |
|
682 |
|
683 } |
|
684 }); |
|
685 |
|
686 $.ui.plugin.add("draggable", "stack", { |
|
687 start: function(event, ui) { |
|
688 var group = $.makeArray($(ui.options.stack.group)).sort(function(a,b) { |
|
689 return (parseInt($(a).css("zIndex"),10) || ui.options.stack.min) - (parseInt($(b).css("zIndex"),10) || ui.options.stack.min); |
|
690 }); |
|
691 |
|
692 $(group).each(function(i) { |
|
693 this.style.zIndex = ui.options.stack.min + i; |
|
694 }); |
|
695 |
|
696 this[0].style.zIndex = ui.options.stack.min + group.length; |
|
697 } |
|
698 }); |
|
699 |
|
700 $.ui.plugin.add("draggable", "zIndex", { |
|
701 start: function(event, ui) { |
|
702 var t = $(ui.helper); |
|
703 if(t.css("zIndex")) ui.options._zIndex = t.css("zIndex"); |
|
704 t.css('zIndex', ui.options.zIndex); |
|
705 }, |
|
706 stop: function(event, ui) { |
|
707 if(ui.options._zIndex) $(ui.helper).css('zIndex', ui.options._zIndex); |
|
708 } |
|
709 }); |
|
710 |
|
711 })(jQuery); |