silverstripe-framework/thirdparty/jquery-ui/minified/jquery.ui.draggable.min.js

/*
 * jQuery UI Draggable 1.8rc3
 *
 * Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI/Draggables
 *
 * Depends:
 *	jquery.ui.core.js
 *	jquery.ui.mouse.js
 *	jquery.ui.widget.js
 */
(function(a){a.widget("ui.draggable",a.ui.mouse,{widgetEventPrefix:"drag",options:{addClasses:true,appendTo:"parent",axis:false,connectToSortable:false,containment:false,cursor:"auto",cursorAt:false,grid:false,handle:false,helper:"original",iframeFix:false,opacity:false,refreshPositions:false,revert:false,revertDuration:500,scope:"default",scroll:true,scrollSensitivity:20,scrollSpeed:20,snap:false,snapMode:"both",snapTolerance:20,stack:false,zIndex:false},_create:function(){if(this.options.helper=="original"&&!(/^(?:r|a|f)/).test(this.element.css("position"))){this.element[0].style.position="relative"}(this.options.addClasses&&this.element.addClass("ui-draggable"));(this.options.disabled&&this.element.addClass("ui-draggable-disabled"));this._mouseInit()},destroy:function(){if(!this.element.data("draggable")){return}this.element.removeData("draggable").unbind(".draggable").removeClass("ui-draggable ui-draggable-dragging ui-draggable-disabled");this._mouseDestroy();return this},_mouseCapture:function(b){var c=this.options;if(this.helper||c.disabled||a(b.target).is(".ui-resizable-handle")){return false}this.handle=this._getHandle(b);if(!this.handle){return false}return true},_mouseStart:function(b){var c=this.options;this.helper=this._createHelper(b);this._cacheHelperProportions();if(a.ui.ddmanager){a.ui.ddmanager.current=this}this._cacheMargins();this.cssPosition=this.helper.css("position");this.scrollParent=this.helper.scrollParent();this.offset=this.positionAbs=this.element.offset();this.offset={top:this.offset.top-this.margins.top,left:this.offset.left-this.margins.left};a.extend(this.offset,{click:{left:b.pageX-this.offset.left,top:b.pageY-this.offset.top},parent:this._getParentOffset(),relative:this._getRelativeOffset()});this.originalPosition=this.position=this._generatePosition(b);this.originalPageX=b.pageX;this.originalPageY=b.pageY;(c.cursorAt&&this._adjustOffsetFromHelper(c.cursorAt));if(c.containment){this._setContainment()}if(this._trigger("start",b)===false){this._clear();return false}this._cacheHelperProportions();if(a.ui.ddmanager&&!c.dropBehaviour){a.ui.ddmanager.prepareOffsets(this,b)}this.helper.addClass("ui-draggable-dragging");this._mouseDrag(b,true);return true},_mouseDrag:function(b,d){this.position=this._generatePosition(b);this.positionAbs=this._convertPositionTo("absolute");if(!d){var c=this._uiHash();if(this._trigger("drag",b,c)===false){this._mouseUp({});return false}this.position=c.position}if(!this.options.axis||this.options.axis!="y"){this.helper[0].style.left=this.position.left+"px"}if(!this.options.axis||this.options.axis!="x"){this.helper[0].style.top=this.position.top+"px"}if(a.ui.ddmanager){a.ui.ddmanager.drag(this,b)}return false},_mouseStop:function(c){var d=false;if(a.ui.ddmanager&&!this.options.dropBehaviour){d=a.ui.ddmanager.drop(this,c)}if(this.dropped){d=this.dropped;this.dropped=false}if(!this.element[0]||!this.element[0].parentNode){return false}if((this.options.revert=="invalid"&&!d)||(this.options.revert=="valid"&&d)||this.options.revert===true||(a.isFunction(this.options.revert)&&this.options.revert.call(this.element,d))){var b=this;a(this.helper).animate(this.originalPosition,parseInt(this.options.revertDuration,10),function(){if(b._trigger("stop",c)!==false){b._clear()}})}else{if(this._trigger("stop",c)!==false){this._clear()}}return false},cancel:function(){if(this.helper.is(".ui-draggable-dragging")){this._mouseUp({})}else{this._clear()}return this},_getHandle:function(b){var c=!this.options.handle||!a(this.options.handle,this.element).length?true:false;a(this.options.handle,this.element).find("*").andSelf().each(function(){if(this==b.target){c=true}});return c},_createHelper:function(c){var d=this.options;var b=a.isFunction(d.helper)?a(d.helper.apply(this.element[0],[c])):(d.helper=="clone"?this.element.clone():this.element);if(!b.parents("body").length){b.appendTo((d.appendTo=="parent"?this.element[0].parentNode:d.appendTo))}if(b[0]!=this.element[0]&&!(/(fixed|absolute)/).test(b.css("position"))){b.css("position","absolute")}return b},_adjustOffsetFromHelper:functio