WordPress/wp-includes/js/jquery/ui.sortable.js

/*
 * jQuery UI Sortable 1.7.2
 *
 * Copyright (c) 2009 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/Sortables
 *
 * Depends:
 *	ui.core.js
 */
(function(a){a.widget("ui.sortable",a.extend({},a.ui.mouse,{_init:function(){var b=this.options;this.containerCache={};this.element.addClass("ui-sortable");this.refresh();this.floating=this.items.length?(/left|right/).test(this.items[0].item.css("float")):false;this.offset=this.element.offset();this._mouseInit()},destroy:function(){this.element.removeClass("ui-sortable ui-sortable-disabled").removeData("sortable").unbind(".sortable");this._mouseDestroy();for(var b=this.items.length-1;b>=0;b--){this.items[b].item.removeData("sortable-item")}},_mouseCapture:function(e,f){if(this.reverting){return false}if(this.options.disabled||this.options.type=="static"){return false}this._refreshItems(e);var d=null,c=this,b=a(e.target).parents().each(function(){if(a.data(this,"sortable-item")==c){d=a(this);return false}});if(a.data(e.target,"sortable-item")==c){d=a(e.target)}if(!d){return false}if(this.options.handle&&!f){var g=false;a(this.options.handle,d).find("*").andSelf().each(function(){if(this==e.target){g=true}});if(!g){return false}}this.currentItem=d;this._removeCurrentsFromItems();return true},_mouseStart:function(e,f,b){var g=this.options,c=this;this.currentContainer=this;this.refreshPositions();this.helper=this._createHelper(e);this._cacheHelperProportions();this._cacheMargins();this.scrollParent=this.helper.scrollParent();this.offset=this.currentItem.offset();this.offset={top:this.offset.top-this.margins.top,left:this.offset.left-this.margins.left};this.helper.css("position","absolute");this.cssPosition=this.helper.css("position");a.extend(this.offset,{click:{left:e.pageX-this.offset.left,top:e.pageY-this.offset.top},parent:this._getParentOffset(),relative:this._getRelativeOffset()});this.originalPosition=this._generatePosition(e);this.originalPageX=e.pageX;this.originalPageY=e.pageY;if(g.cursorAt){this._adjustOffsetFromHelper(g.cursorAt)}this.domPosition={prev:this.currentItem.prev()[0],parent:this.currentItem.parent()[0]};if(this.helper[0]!=this.currentItem[0]){this.currentItem.hide()}this._createPlaceholder();if(g.containment){this._setContainment()}if(g.cursor){if(a("body").css("cursor")){this._storedCursor=a("body").css("cursor")}a("body").css("cursor",g.cursor)}if(g.opacity){if(this.helper.css("opacity")){this._storedOpacity=this.helper.css("opacity")}this.helper.css("opacity",g.opacity)}if(g.zIndex){if(this.helper.css("zIndex")){this._storedZIndex=this.helper.css("zIndex")}this.helper.css("zIndex",g.zIndex)}if(this.scrollParent[0]!=document&&this.scrollParent[0].tagName!="HTML"){this.overflowOffset=this.scrollParent.offset()}this._trigger("start",e,this._uiHash());if(!this._preserveHelperProportions){this._cacheHelperProportions()}if(!b){for(var d=this.containers.length-1;d>=0;d--){this.containers[d]._trigger("activate",e,c._uiHash(this))}}if(a.ui.ddmanager){a.ui.ddmanager.current=this}if(a.ui.ddmanager&&!g.dropBehaviour){a.ui.ddmanager.prepareOffsets(this,e)}this.dragging=true;this.helper.addClass("ui-sortable-helper");this._mouseDrag(e);return true},_mouseDrag:function(f){this.position=this._generatePosition(f);this.positionAbs=this._convertPositionTo("absolute");if(!this.lastPositionAbs){this.lastPositionAbs=this.positionAbs}if(this.options.scroll){var g=this.options,b=false;if(this.scrollParent[0]!=document&&this.scrollParent[0].tagName!="HTML"){if((this.overflowOffset.top+this.scrollParent[0].offsetHeight)-f.pageY<g.scrollSensitivity){this.scrollParent[0].scrollTop=b=this.scrollParent[0].scrollTop+g.scrollSpeed}else{if(f.pageY-this.overflowOffset.top<g.scrollSensitivity){this.scrollParent[0].scrollTop=b=this.scrollParent[0].scrollTop-g.scrollSpeed}}if((this.overflowOffset.left+this.scrollParent[0].offsetWidth)-f.pageX<g.scrollSensitivity){this.scrollParent[0].scrollLeft=b=this.scrollParent[0].scrollLeft+g.scrollSpeed}else{if(f.pageX-this.overflowOffset.left<g.scrollSensitivity){this.scrollParent[0].scrollLeft=b=this.scrollParent[0].scrollLeft-g.scrollSpeed}}}else{if(f.pageY-a(document).scrollTop()<g.scrollSensitivity){b=a(document).scrollTop(a(document).scrollTop()-g.scrollSpeed)}else{if(a(window).height()-(f