wp/wp-includes/js/jquery/ui/draggable.js
changeset 18 be944660c56a
child 19 3d72ae0968f4
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/js/jquery/ui/draggable.js	Wed Sep 21 18:19:35 2022 +0200
@@ -0,0 +1,1244 @@
+/*!
+ * jQuery UI Draggable 1.12.1
+ * http://jqueryui.com
+ *
+ * Copyright jQuery Foundation and other contributors
+ * Released under the MIT license.
+ * http://jquery.org/license
+ */
+
+//>>label: Draggable
+//>>group: Interactions
+//>>description: Enables dragging functionality for any element.
+//>>docs: http://api.jqueryui.com/draggable/
+//>>demos: http://jqueryui.com/draggable/
+//>>css.structure: ../../themes/base/draggable.css
+
+( function( factory ) {
+	if ( typeof define === "function" && define.amd ) {
+
+		// AMD. Register as an anonymous module.
+		define( [
+			"jquery",
+			"./mouse",
+			"./core"
+		], factory );
+	} else {
+
+		// Browser globals
+		factory( jQuery );
+	}
+}( function( $ ) {
+
+$.widget( "ui.draggable", $.ui.mouse, {
+	version: "1.12.1",
+	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,
+
+		// Callbacks
+		drag: null,
+		start: null,
+		stop: null
+	},
+	_create: function() {
+
+		if ( this.options.helper === "original" ) {
+			this._setPositionRelative();
+		}
+		if ( this.options.addClasses ) {
+			this._addClass( "ui-draggable" );
+		}
+		this._setHandleClassName();
+
+		this._mouseInit();
+	},
+
+	_setOption: function( key, value ) {
+		this._super( key, value );
+		if ( key === "handle" ) {
+			this._removeHandleClassName();
+			this._setHandleClassName();
+		}
+	},
+
+	_destroy: function() {
+		if ( ( this.helper || this.element ).is( ".ui-draggable-dragging" ) ) {
+			this.destroyOnClear = true;
+			return;
+		}
+		this._removeHandleClassName();
+		this._mouseDestroy();
+	},
+
+	_mouseCapture: function( event ) {
+		var o = this.options;
+
+		// Among others, prevent a drag on a resizable-handle
+		if ( this.helper || o.disabled ||
+				$( event.target ).closest( ".ui-resizable-handle" ).length > 0 ) {
+			return false;
+		}
+
+		//Quit if we're not on a valid handle
+		this.handle = this._getHandle( event );
+		if ( !this.handle ) {
+			return false;
+		}
+
+		this._blurActiveElement( event );
+
+		this._blockFrames( o.iframeFix === true ? "iframe" : o.iframeFix );
+
+		return true;
+
+	},
+
+	_blockFrames: function( selector ) {
+		this.iframeBlocks = this.document.find( selector ).map( function() {
+			var iframe = $( this );
+
+			return $( "<div>" )
+				.css( "position", "absolute" )
+				.appendTo( iframe.parent() )
+				.outerWidth( iframe.outerWidth() )
+				.outerHeight( iframe.outerHeight() )
+				.offset( iframe.offset() )[ 0 ];
+		} );
+	},
+
+	_unblockFrames: function() {
+		if ( this.iframeBlocks ) {
+			this.iframeBlocks.remove();
+			delete this.iframeBlocks;
+		}
+	},
+
+	_blurActiveElement: function( event ) {
+		var activeElement = $.ui.safeActiveElement( this.document[ 0 ] ),
+			target = $( event.target );
+
+		// Don't blur if the event occurred on an element that is within
+		// the currently focused element
+		// See #10527, #12472
+		if ( target.closest( activeElement ).length ) {
+			return;
+		}
+
+		// Blur any element that currently has focus, see #4261
+		$.ui.safeBlur( activeElement );
+	},
+
+	_mouseStart: function( event ) {
+
+		var o = this.options;
+
+		//Create and append the visible helper
+		this.helper = this._createHelper( event );
+
+		this._addClass( this.helper, "ui-draggable-dragging" );
+
+		//Cache the helper size
+		this._cacheHelperProportions();
+
+		//If ddmanager is used for droppables, set the global draggable
+		if ( $.ui.ddmanager ) {
+			$.ui.ddmanager.current = this;
+		}
+
+		/*
+		 * - Position generation -
+		 * This block generates everything position related - it's the core of draggables.
+		 */
+
+		//Cache the margins of the original element
+		this._cacheMargins();
+
+		//Store the helper's css position
+		this.cssPosition = this.helper.css( "position" );
+		this.scrollParent = this.helper.scrollParent( true );
+		this.offsetParent = this.helper.offsetParent();
+		this.hasFixedAncestor = this.helper.parents().filter( function() {
+				return $( this ).css( "position" ) === "fixed";
+			} ).length > 0;
+
+		//The element's absolute position on the page minus margins
+		this.positionAbs = this.element.offset();
+		this._refreshOffsets( event );
+
+		//Generate the original position
+		this.originalPosition = this.position = this._generatePosition( event, false );
+		this.originalPageX = event.pageX;
+		this.originalPageY = event.pageY;
+
+		//Adjust the mouse offset relative to the helper if "cursorAt" is supplied
+		( o.cursorAt && this._adjustOffsetFromHelper( o.cursorAt ) );
+
+		//Set a containment if given in the options
+		this._setContainment();
+
+		//Trigger event + callbacks
+		if ( this._trigger( "start", event ) === false ) {
+			this._clear();
+			return false;
+		}
+
+		//Recache the helper size
+		this._cacheHelperProportions();
+
+		//Prepare the droppable offsets
+		if ( $.ui.ddmanager && !o.dropBehaviour ) {
+			$.ui.ddmanager.prepareOffsets( this, event );
+		}
+
+		// Execute the drag once - this causes the helper not to be visible before getting its
+		// correct position
+		this._mouseDrag( event, true );
+
+		// If the ddmanager is used for droppables, inform the manager that dragging has started
+		// (see #5003)
+		if ( $.ui.ddmanager ) {
+			$.ui.ddmanager.dragStart( this, event );
+		}
+
+		return true;
+	},
+
+	_refreshOffsets: function( event ) {
+		this.offset = {
+			top: this.positionAbs.top - this.margins.top,
+			left: this.positionAbs.left - this.margins.left,
+			scroll: false,
+			parent: this._getParentOffset(),
+			relative: this._getRelativeOffset()
+		};
+
+		this.offset.click = {
+			left: event.pageX - this.offset.left,
+			top: event.pageY - this.offset.top
+		};
+	},
+
+	_mouseDrag: function( event, noPropagation ) {
+
+		// reset any necessary cached properties (see #5009)
+		if ( this.hasFixedAncestor ) {
+			this.offset.parent = this._getParentOffset();
+		}
+
+		//Compute the helpers position
+		this.position = this._generatePosition( event, true );
+		this.positionAbs = this._convertPositionTo( "absolute" );
+
+		//Call plugins and callbacks and use the resulting position if something is returned
+		if ( !noPropagation ) {
+			var ui = this._uiHash();
+			if ( this._trigger( "drag", event, ui ) === false ) {
+				this._mouseUp( new $.Event( "mouseup", event ) );
+				return false;
+			}
+			this.position = ui.position;
+		}
+
+		this.helper[ 0 ].style.left = this.position.left + "px";
+		this.helper[ 0 ].style.top = this.position.top + "px";
+
+		if ( $.ui.ddmanager ) {
+			$.ui.ddmanager.drag( this, event );
+		}
+
+		return false;
+	},
+
+	_mouseStop: function( event ) {
+
+		//If we are using droppables, inform the manager about the drop
+		var that = this,
+			dropped = false;
+		if ( $.ui.ddmanager && !this.options.dropBehaviour ) {
+			dropped = $.ui.ddmanager.drop( this, event );
+		}
+
+		//if a drop comes from outside (a sortable)
+		if ( this.dropped ) {
+			dropped = this.dropped;
+			this.dropped = false;
+		}
+
+		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 ) )
+		) {
+			$( this.helper ).animate(
+				this.originalPosition,
+				parseInt( this.options.revertDuration, 10 ),
+				function() {
+					if ( that._trigger( "stop", event ) !== false ) {
+						that._clear();
+					}
+				}
+			);
+		} else {
+			if ( this._trigger( "stop", event ) !== false ) {
+				this._clear();
+			}
+		}
+
+		return false;
+	},
+
+	_mouseUp: function( event ) {
+		this._unblockFrames();
+
+		// If the ddmanager is used for droppables, inform the manager that dragging has stopped
+		// (see #5003)
+		if ( $.ui.ddmanager ) {
+			$.ui.ddmanager.dragStop( this, event );
+		}
+
+		// Only need to focus if the event occurred on the draggable itself, see #10527
+		if ( this.handleElement.is( event.target ) ) {
+
+			// The interaction is over; whether or not the click resulted in a drag,
+			// focus the element
+			this.element.trigger( "focus" );
+		}
+
+		return $.ui.mouse.prototype._mouseUp.call( this, event );
+	},
+
+	cancel: function() {
+
+		if ( this.helper.is( ".ui-draggable-dragging" ) ) {
+			this._mouseUp( new $.Event( "mouseup", { target: this.element[ 0 ] } ) );
+		} else {
+			this._clear();
+		}
+
+		return this;
+
+	},
+
+	_getHandle: function( event ) {
+		return this.options.handle ?
+			!!$( event.target ).closest( this.element.find( this.options.handle ) ).length :
+			true;
+	},
+
+	_setHandleClassName: function() {
+		this.handleElement = this.options.handle ?
+			this.element.find( this.options.handle ) : this.element;
+		this._addClass( this.handleElement, "ui-draggable-handle" );
+	},
+
+	_removeHandleClassName: function() {
+		this._removeClass( this.handleElement, "ui-draggable-handle" );
+	},
+
+	_createHelper: function( event ) {
+
+		var o = this.options,
+			helperIsFunction = $.isFunction( o.helper ),
+			helper = helperIsFunction ?
+				$( o.helper.apply( this.element[ 0 ], [ event ] ) ) :
+				( o.helper === "clone" ?
+					this.element.clone().removeAttr( "id" ) :
+					this.element );
+
+		if ( !helper.parents( "body" ).length ) {
+			helper.appendTo( ( o.appendTo === "parent" ?
+				this.element[ 0 ].parentNode :
+				o.appendTo ) );
+		}
+
+		// Http://bugs.jqueryui.com/ticket/9446
+		// a helper function can return the original element
+		// which wouldn't have been set to relative in _create
+		if ( helperIsFunction && helper[ 0 ] === this.element[ 0 ] ) {
+			this._setPositionRelative();
+		}
+
+		if ( helper[ 0 ] !== this.element[ 0 ] &&
+				!( /(fixed|absolute)/ ).test( helper.css( "position" ) ) ) {
+			helper.css( "position", "absolute" );
+		}
+
+		return helper;
+
+	},
+
+	_setPositionRelative: function() {
+		if ( !( /^(?:r|a|f)/ ).test( this.element.css( "position" ) ) ) {
+			this.element[ 0 ].style.position = "relative";
+		}
+	},
+
+	_adjustOffsetFromHelper: function( obj ) {
+		if ( typeof obj === "string" ) {
+			obj = obj.split( " " );
+		}
+		if ( $.isArray( obj ) ) {
+			obj = { left: +obj[ 0 ], top: +obj[ 1 ] || 0 };
+		}
+		if ( "left" in obj ) {
+			this.offset.click.left = obj.left + this.margins.left;
+		}
+		if ( "right" in obj ) {
+			this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left;
+		}
+		if ( "top" in obj ) {
+			this.offset.click.top = obj.top + this.margins.top;
+		}
+		if ( "bottom" in obj ) {
+			this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top;
+		}
+	},
+
+	_isRootNode: function( element ) {
+		return ( /(html|body)/i ).test( element.tagName ) || element === this.document[ 0 ];
+	},
+
+	_getParentOffset: function() {
+
+		//Get the offsetParent and cache its position
+		var po = this.offsetParent.offset(),
+			document = this.document[ 0 ];
+
+		// This is a special case where we need to modify a offset calculated on start, since the
+		// following happened:
+		// 1. The position of the helper is absolute, so it's position is calculated based on the
+		// next positioned parent
+		// 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't
+		// the document, which means that the scroll is included in the initial calculation of the
+		// offset of the parent, and never recalculated upon drag
+		if ( this.cssPosition === "absolute" && this.scrollParent[ 0 ] !== document &&
+				$.contains( this.scrollParent[ 0 ], this.offsetParent[ 0 ] ) ) {
+			po.left += this.scrollParent.scrollLeft();
+			po.top += this.scrollParent.scrollTop();
+		}
+
+		if ( this._isRootNode( this.offsetParent[ 0 ] ) ) {
+			po = { top: 0, left: 0 };
+		}
+
+		return {
+			top: po.top + ( parseInt( this.offsetParent.css( "borderTopWidth" ), 10 ) || 0 ),
+			left: po.left + ( parseInt( this.offsetParent.css( "borderLeftWidth" ), 10 ) || 0 )
+		};
+
+	},
+
+	_getRelativeOffset: function() {
+		if ( this.cssPosition !== "relative" ) {
+			return { top: 0, left: 0 };
+		}
+
+		var p = this.element.position(),
+			scrollIsRootNode = this._isRootNode( this.scrollParent[ 0 ] );
+
+		return {
+			top: p.top - ( parseInt( this.helper.css( "top" ), 10 ) || 0 ) +
+				( !scrollIsRootNode ? this.scrollParent.scrollTop() : 0 ),
+			left: p.left - ( parseInt( this.helper.css( "left" ), 10 ) || 0 ) +
+				( !scrollIsRootNode ? this.scrollParent.scrollLeft() : 0 )
+		};
+
+	},
+
+	_cacheMargins: function() {
+		this.margins = {
+			left: ( parseInt( this.element.css( "marginLeft" ), 10 ) || 0 ),
+			top: ( parseInt( this.element.css( "marginTop" ), 10 ) || 0 ),
+			right: ( parseInt( this.element.css( "marginRight" ), 10 ) || 0 ),
+			bottom: ( parseInt( this.element.css( "marginBottom" ), 10 ) || 0 )
+		};
+	},
+
+	_cacheHelperProportions: function() {
+		this.helperProportions = {
+			width: this.helper.outerWidth(),
+			height: this.helper.outerHeight()
+		};
+	},
+
+	_setContainment: function() {
+
+		var isUserScrollable, c, ce,
+			o = this.options,
+			document = this.document[ 0 ];
+
+		this.relativeContainer = null;
+
+		if ( !o.containment ) {
+			this.containment = null;
+			return;
+		}
+
+		if ( o.containment === "window" ) {
+			this.containment = [
+				$( window ).scrollLeft() - this.offset.relative.left - this.offset.parent.left,
+				$( window ).scrollTop() - this.offset.relative.top - this.offset.parent.top,
+				$( window ).scrollLeft() + $( window ).width() -
+					this.helperProportions.width - this.margins.left,
+				$( window ).scrollTop() +
+					( $( window ).height() || document.body.parentNode.scrollHeight ) -
+					this.helperProportions.height - this.margins.top
+			];
+			return;
+		}
+
+		if ( o.containment === "document" ) {
+			this.containment = [
+				0,
+				0,
+				$( document ).width() - this.helperProportions.width - this.margins.left,
+				( $( document ).height() || document.body.parentNode.scrollHeight ) -
+					this.helperProportions.height - this.margins.top
+			];
+			return;
+		}
+
+		if ( o.containment.constructor === Array ) {
+			this.containment = o.containment;
+			return;
+		}
+
+		if ( o.containment === "parent" ) {
+			o.containment = this.helper[ 0 ].parentNode;
+		}
+
+		c = $( o.containment );
+		ce = c[ 0 ];
+
+		if ( !ce ) {
+			return;
+		}
+
+		isUserScrollable = /(scroll|auto)/.test( c.css( "overflow" ) );
+
+		this.containment = [
+			( parseInt( c.css( "borderLeftWidth" ), 10 ) || 0 ) +
+				( parseInt( c.css( "paddingLeft" ), 10 ) || 0 ),
+			( parseInt( c.css( "borderTopWidth" ), 10 ) || 0 ) +
+				( parseInt( c.css( "paddingTop" ), 10 ) || 0 ),
+			( isUserScrollable ? Math.max( ce.scrollWidth, ce.offsetWidth ) : ce.offsetWidth ) -
+				( parseInt( c.css( "borderRightWidth" ), 10 ) || 0 ) -
+				( parseInt( c.css( "paddingRight" ), 10 ) || 0 ) -
+				this.helperProportions.width -
+				this.margins.left -
+				this.margins.right,
+			( isUserScrollable ? Math.max( ce.scrollHeight, ce.offsetHeight ) : ce.offsetHeight ) -
+				( parseInt( c.css( "borderBottomWidth" ), 10 ) || 0 ) -
+				( parseInt( c.css( "paddingBottom" ), 10 ) || 0 ) -
+				this.helperProportions.height -
+				this.margins.top -
+				this.margins.bottom
+		];
+		this.relativeContainer = c;
+	},
+
+	_convertPositionTo: function( d, pos ) {
+
+		if ( !pos ) {
+			pos = this.position;
+		}
+
+		var mod = d === "absolute" ? 1 : -1,
+			scrollIsRootNode = this._isRootNode( this.scrollParent[ 0 ] );
+
+		return {
+			top: (
+
+				// The absolute mouse position
+				pos.top	+
+
+				// Only for relative positioned nodes: Relative offset from element to offset parent
+				this.offset.relative.top * mod +
+
+				// The offsetParent's offset without borders (offset + border)
+				this.offset.parent.top * mod -
+				( ( this.cssPosition === "fixed" ?
+					-this.offset.scroll.top :
+					( scrollIsRootNode ? 0 : this.offset.scroll.top ) ) * mod )
+			),
+			left: (
+
+				// The absolute mouse position
+				pos.left +
+
+				// Only for relative positioned nodes: Relative offset from element to offset parent
+				this.offset.relative.left * mod +
+
+				// The offsetParent's offset without borders (offset + border)
+				this.offset.parent.left * mod	-
+				( ( this.cssPosition === "fixed" ?
+					-this.offset.scroll.left :
+					( scrollIsRootNode ? 0 : this.offset.scroll.left ) ) * mod )
+			)
+		};
+
+	},
+
+	_generatePosition: function( event, constrainPosition ) {
+
+		var containment, co, top, left,
+			o = this.options,
+			scrollIsRootNode = this._isRootNode( this.scrollParent[ 0 ] ),
+			pageX = event.pageX,
+			pageY = event.pageY;
+
+		// Cache the scroll
+		if ( !scrollIsRootNode || !this.offset.scroll ) {
+			this.offset.scroll = {
+				top: this.scrollParent.scrollTop(),
+				left: this.scrollParent.scrollLeft()
+			};
+		}
+
+		/*
+		 * - Position constraining -
+		 * Constrain the position to a mix of grid, containment.
+		 */
+
+		// If we are not dragging yet, we won't check for options
+		if ( constrainPosition ) {
+			if ( this.containment ) {
+				if ( this.relativeContainer ) {
+					co = this.relativeContainer.offset();
+					containment = [
+						this.containment[ 0 ] + co.left,
+						this.containment[ 1 ] + co.top,
+						this.containment[ 2 ] + co.left,
+						this.containment[ 3 ] + co.top
+					];
+				} else {
+					containment = this.containment;
+				}
+
+				if ( event.pageX - this.offset.click.left < containment[ 0 ] ) {
+					pageX = containment[ 0 ] + this.offset.click.left;
+				}
+				if ( event.pageY - this.offset.click.top < containment[ 1 ] ) {
+					pageY = containment[ 1 ] + this.offset.click.top;
+				}
+				if ( event.pageX - this.offset.click.left > containment[ 2 ] ) {
+					pageX = containment[ 2 ] + this.offset.click.left;
+				}
+				if ( event.pageY - this.offset.click.top > containment[ 3 ] ) {
+					pageY = containment[ 3 ] + this.offset.click.top;
+				}
+			}
+
+			if ( o.grid ) {
+
+				//Check for grid elements set to 0 to prevent divide by 0 error causing invalid
+				// argument errors in IE (see ticket #6950)
+				top = o.grid[ 1 ] ? this.originalPageY + Math.round( ( pageY -
+					this.originalPageY ) / o.grid[ 1 ] ) * o.grid[ 1 ] : this.originalPageY;
+				pageY = containment ? ( ( top - this.offset.click.top >= containment[ 1 ] ||
+					top - this.offset.click.top > containment[ 3 ] ) ?
+						top :
+						( ( top - this.offset.click.top >= containment[ 1 ] ) ?
+							top - o.grid[ 1 ] : top + o.grid[ 1 ] ) ) : top;
+
+				left = o.grid[ 0 ] ? this.originalPageX +
+					Math.round( ( pageX - this.originalPageX ) / o.grid[ 0 ] ) * o.grid[ 0 ] :
+					this.originalPageX;
+				pageX = containment ? ( ( left - this.offset.click.left >= containment[ 0 ] ||
+					left - this.offset.click.left > containment[ 2 ] ) ?
+						left :
+						( ( left - this.offset.click.left >= containment[ 0 ] ) ?
+							left - o.grid[ 0 ] : left + o.grid[ 0 ] ) ) : left;
+			}
+
+			if ( o.axis === "y" ) {
+				pageX = this.originalPageX;
+			}
+
+			if ( o.axis === "x" ) {
+				pageY = this.originalPageY;
+			}
+		}
+
+		return {
+			top: (
+
+				// The absolute mouse position
+				pageY -
+
+				// Click offset (relative to the element)
+				this.offset.click.top -
+
+				// Only for relative positioned nodes: Relative offset from element to offset parent
+				this.offset.relative.top -
+
+				// The offsetParent's offset without borders (offset + border)
+				this.offset.parent.top +
+				( this.cssPosition === "fixed" ?
+					-this.offset.scroll.top :
+					( scrollIsRootNode ? 0 : this.offset.scroll.top ) )
+			),
+			left: (
+
+				// The absolute mouse position
+				pageX -
+
+				// Click offset (relative to the element)
+				this.offset.click.left -
+
+				// Only for relative positioned nodes: Relative offset from element to offset parent
+				this.offset.relative.left -
+
+				// The offsetParent's offset without borders (offset + border)
+				this.offset.parent.left +
+				( this.cssPosition === "fixed" ?
+					-this.offset.scroll.left :
+					( scrollIsRootNode ? 0 : this.offset.scroll.left ) )
+			)
+		};
+
+	},
+
+	_clear: function() {
+		this._removeClass( this.helper, "ui-draggable-dragging" );
+		if ( this.helper[ 0 ] !== this.element[ 0 ] && !this.cancelHelperRemoval ) {
+			this.helper.remove();
+		}
+		this.helper = null;
+		this.cancelHelperRemoval = false;
+		if ( this.destroyOnClear ) {
+			this.destroy();
+		}
+	},
+
+	// From now on bulk stuff - mainly helpers
+
+	_trigger: function( type, event, ui ) {
+		ui = ui || this._uiHash();
+		$.ui.plugin.call( this, type, [ event, ui, this ], true );
+
+		// Absolute position and offset (see #6884 ) have to be recalculated after plugins
+		if ( /^(drag|start|stop)/.test( type ) ) {
+			this.positionAbs = this._convertPositionTo( "absolute" );
+			ui.offset = this.positionAbs;
+		}
+		return $.Widget.prototype._trigger.call( this, type, event, ui );
+	},
+
+	plugins: {},
+
+	_uiHash: function() {
+		return {
+			helper: this.helper,
+			position: this.position,
+			originalPosition: this.originalPosition,
+			offset: this.positionAbs
+		};
+	}
+
+} );
+
+$.ui.plugin.add( "draggable", "connectToSortable", {
+	start: function( event, ui, draggable ) {
+		var uiSortable = $.extend( {}, ui, {
+			item: draggable.element
+		} );
+
+		draggable.sortables = [];
+		$( draggable.options.connectToSortable ).each( function() {
+			var sortable = $( this ).sortable( "instance" );
+
+			if ( sortable && !sortable.options.disabled ) {
+				draggable.sortables.push( sortable );
+
+				// RefreshPositions is called at drag start to refresh the containerCache
+				// which is used in drag. This ensures it's initialized and synchronized
+				// with any changes that might have happened on the page since initialization.
+				sortable.refreshPositions();
+				sortable._trigger( "activate", event, uiSortable );
+			}
+		} );
+	},
+	stop: function( event, ui, draggable ) {
+		var uiSortable = $.extend( {}, ui, {
+			item: draggable.element
+		} );
+
+		draggable.cancelHelperRemoval = false;
+
+		$.each( draggable.sortables, function() {
+			var sortable = this;
+
+			if ( sortable.isOver ) {
+				sortable.isOver = 0;
+
+				// Allow this sortable to handle removing the helper
+				draggable.cancelHelperRemoval = true;
+				sortable.cancelHelperRemoval = false;
+
+				// Use _storedCSS To restore properties in the sortable,
+				// as this also handles revert (#9675) since the draggable
+				// may have modified them in unexpected ways (#8809)
+				sortable._storedCSS = {
+					position: sortable.placeholder.css( "position" ),
+					top: sortable.placeholder.css( "top" ),
+					left: sortable.placeholder.css( "left" )
+				};
+
+				sortable._mouseStop( event );
+
+				// Once drag has ended, the sortable should return to using
+				// its original helper, not the shared helper from draggable
+				sortable.options.helper = sortable.options._helper;
+			} else {
+
+				// Prevent this Sortable from removing the helper.
+				// However, don't set the draggable to remove the helper
+				// either as another connected Sortable may yet handle the removal.
+				sortable.cancelHelperRemoval = true;
+
+				sortable._trigger( "deactivate", event, uiSortable );
+			}
+		} );
+	},
+	drag: function( event, ui, draggable ) {
+		$.each( draggable.sortables, function() {
+			var innermostIntersecting = false,
+				sortable = this;
+
+			// Copy over variables that sortable's _intersectsWith uses
+			sortable.positionAbs = draggable.positionAbs;
+			sortable.helperProportions = draggable.helperProportions;
+			sortable.offset.click = draggable.offset.click;
+
+			if ( sortable._intersectsWith( sortable.containerCache ) ) {
+				innermostIntersecting = true;
+
+				$.each( draggable.sortables, function() {
+
+					// Copy over variables that sortable's _intersectsWith uses
+					this.positionAbs = draggable.positionAbs;
+					this.helperProportions = draggable.helperProportions;
+					this.offset.click = draggable.offset.click;
+
+					if ( this !== sortable &&
+							this._intersectsWith( this.containerCache ) &&
+							$.contains( sortable.element[ 0 ], this.element[ 0 ] ) ) {
+						innermostIntersecting = false;
+					}
+
+					return innermostIntersecting;
+				} );
+			}
+
+			if ( innermostIntersecting ) {
+
+				// If it intersects, we use a little isOver variable and set it once,
+				// so that the move-in stuff gets fired only once.
+				if ( !sortable.isOver ) {
+					sortable.isOver = 1;
+
+					// Store draggable's parent in case we need to reappend to it later.
+					draggable._parent = ui.helper.parent();
+
+					sortable.currentItem = ui.helper
+						.appendTo( sortable.element )
+						.data( "ui-sortable-item", true );
+
+					// Store helper option to later restore it
+					sortable.options._helper = sortable.options.helper;
+
+					sortable.options.helper = function() {
+						return ui.helper[ 0 ];
+					};
+
+					// Fire the start events of the sortable with our passed browser event,
+					// and our own helper (so it doesn't create a new one)
+					event.target = sortable.currentItem[ 0 ];
+					sortable._mouseCapture( event, true );
+					sortable._mouseStart( event, true, true );
+
+					// Because the browser event is way off the new appended portlet,
+					// modify necessary variables to reflect the changes
+					sortable.offset.click.top = draggable.offset.click.top;
+					sortable.offset.click.left = draggable.offset.click.left;
+					sortable.offset.parent.left -= draggable.offset.parent.left -
+						sortable.offset.parent.left;
+					sortable.offset.parent.top -= draggable.offset.parent.top -
+						sortable.offset.parent.top;
+
+					draggable._trigger( "toSortable", event );
+
+					// Inform draggable that the helper is in a valid drop zone,
+					// used solely in the revert option to handle "valid/invalid".
+					draggable.dropped = sortable.element;
+
+					// Need to refreshPositions of all sortables in the case that
+					// adding to one sortable changes the location of the other sortables (#9675)
+					$.each( draggable.sortables, function() {
+						this.refreshPositions();
+					} );
+
+					// Hack so receive/update callbacks work (mostly)
+					draggable.currentItem = draggable.element;
+					sortable.fromOutside = draggable;
+				}
+
+				if ( sortable.currentItem ) {
+					sortable._mouseDrag( event );
+
+					// Copy the sortable's position because the draggable's can potentially reflect
+					// a relative position, while sortable is always absolute, which the dragged
+					// element has now become. (#8809)
+					ui.position = sortable.position;
+				}
+			} else {
+
+				// If it doesn't intersect with the sortable, and it intersected before,
+				// we fake the drag stop of the sortable, but make sure it doesn't remove
+				// the helper by using cancelHelperRemoval.
+				if ( sortable.isOver ) {
+
+					sortable.isOver = 0;
+					sortable.cancelHelperRemoval = true;
+
+					// Calling sortable's mouseStop would trigger a revert,
+					// so revert must be temporarily false until after mouseStop is called.
+					sortable.options._revert = sortable.options.revert;
+					sortable.options.revert = false;
+
+					sortable._trigger( "out", event, sortable._uiHash( sortable ) );
+					sortable._mouseStop( event, true );
+
+					// Restore sortable behaviors that were modfied
+					// when the draggable entered the sortable area (#9481)
+					sortable.options.revert = sortable.options._revert;
+					sortable.options.helper = sortable.options._helper;
+
+					if ( sortable.placeholder ) {
+						sortable.placeholder.remove();
+					}
+
+					// Restore and recalculate the draggable's offset considering the sortable
+					// may have modified them in unexpected ways. (#8809, #10669)
+					ui.helper.appendTo( draggable._parent );
+					draggable._refreshOffsets( event );
+					ui.position = draggable._generatePosition( event, true );
+
+					draggable._trigger( "fromSortable", event );
+
+					// Inform draggable that the helper is no longer in a valid drop zone
+					draggable.dropped = false;
+
+					// Need to refreshPositions of all sortables just in case removing
+					// from one sortable changes the location of other sortables (#9675)
+					$.each( draggable.sortables, function() {
+						this.refreshPositions();
+					} );
+				}
+			}
+		} );
+	}
+} );
+
+$.ui.plugin.add( "draggable", "cursor", {
+	start: function( event, ui, instance ) {
+		var t = $( "body" ),
+			o = instance.options;
+
+		if ( t.css( "cursor" ) ) {
+			o._cursor = t.css( "cursor" );
+		}
+		t.css( "cursor", o.cursor );
+	},
+	stop: function( event, ui, instance ) {
+		var o = instance.options;
+		if ( o._cursor ) {
+			$( "body" ).css( "cursor", o._cursor );
+		}
+	}
+} );
+
+$.ui.plugin.add( "draggable", "opacity", {
+	start: function( event, ui, instance ) {
+		var t = $( ui.helper ),
+			o = instance.options;
+		if ( t.css( "opacity" ) ) {
+			o._opacity = t.css( "opacity" );
+		}
+		t.css( "opacity", o.opacity );
+	},
+	stop: function( event, ui, instance ) {
+		var o = instance.options;
+		if ( o._opacity ) {
+			$( ui.helper ).css( "opacity", o._opacity );
+		}
+	}
+} );
+
+$.ui.plugin.add( "draggable", "scroll", {
+	start: function( event, ui, i ) {
+		if ( !i.scrollParentNotHidden ) {
+			i.scrollParentNotHidden = i.helper.scrollParent( false );
+		}
+
+		if ( i.scrollParentNotHidden[ 0 ] !== i.document[ 0 ] &&
+				i.scrollParentNotHidden[ 0 ].tagName !== "HTML" ) {
+			i.overflowOffset = i.scrollParentNotHidden.offset();
+		}
+	},
+	drag: function( event, ui, i  ) {
+
+		var o = i.options,
+			scrolled = false,
+			scrollParent = i.scrollParentNotHidden[ 0 ],
+			document = i.document[ 0 ];
+
+		if ( scrollParent !== document && scrollParent.tagName !== "HTML" ) {
+			if ( !o.axis || o.axis !== "x" ) {
+				if ( ( i.overflowOffset.top + scrollParent.offsetHeight ) - event.pageY <
+						o.scrollSensitivity ) {
+					scrollParent.scrollTop = scrolled = scrollParent.scrollTop + o.scrollSpeed;
+				} else if ( event.pageY - i.overflowOffset.top < o.scrollSensitivity ) {
+					scrollParent.scrollTop = scrolled = scrollParent.scrollTop - o.scrollSpeed;
+				}
+			}
+
+			if ( !o.axis || o.axis !== "y" ) {
+				if ( ( i.overflowOffset.left + scrollParent.offsetWidth ) - event.pageX <
+						o.scrollSensitivity ) {
+					scrollParent.scrollLeft = scrolled = scrollParent.scrollLeft + o.scrollSpeed;
+				} else if ( event.pageX - i.overflowOffset.left < o.scrollSensitivity ) {
+					scrollParent.scrollLeft = scrolled = scrollParent.scrollLeft - o.scrollSpeed;
+				}
+			}
+
+		} else {
+
+			if ( !o.axis || o.axis !== "x" ) {
+				if ( event.pageY - $( document ).scrollTop() < o.scrollSensitivity ) {
+					scrolled = $( document ).scrollTop( $( document ).scrollTop() - o.scrollSpeed );
+				} else if ( $( window ).height() - ( event.pageY - $( document ).scrollTop() ) <
+						o.scrollSensitivity ) {
+					scrolled = $( document ).scrollTop( $( document ).scrollTop() + o.scrollSpeed );
+				}
+			}
+
+			if ( !o.axis || o.axis !== "y" ) {
+				if ( event.pageX - $( document ).scrollLeft() < o.scrollSensitivity ) {
+					scrolled = $( document ).scrollLeft(
+						$( document ).scrollLeft() - o.scrollSpeed
+					);
+				} else if ( $( window ).width() - ( event.pageX - $( document ).scrollLeft() ) <
+						o.scrollSensitivity ) {
+					scrolled = $( document ).scrollLeft(
+						$( document ).scrollLeft() + o.scrollSpeed
+					);
+				}
+			}
+
+		}
+
+		if ( scrolled !== false && $.ui.ddmanager && !o.dropBehaviour ) {
+			$.ui.ddmanager.prepareOffsets( i, event );
+		}
+
+	}
+} );
+
+$.ui.plugin.add( "draggable", "snap", {
+	start: function( event, ui, i ) {
+
+		var o = i.options;
+
+		i.snapElements = [];
+
+		$( o.snap.constructor !== String ? ( o.snap.items || ":data(ui-draggable)" ) : o.snap )
+			.each( function() {
+				var $t = $( this ),
+					$o = $t.offset();
+				if ( this !== i.element[ 0 ] ) {
+					i.snapElements.push( {
+						item: this,
+						width: $t.outerWidth(), height: $t.outerHeight(),
+						top: $o.top, left: $o.left
+					} );
+				}
+			} );
+
+	},
+	drag: function( event, ui, inst ) {
+
+		var ts, bs, ls, rs, l, r, t, b, i, first,
+			o = inst.options,
+			d = o.snapTolerance,
+			x1 = ui.offset.left, x2 = x1 + inst.helperProportions.width,
+			y1 = ui.offset.top, y2 = y1 + inst.helperProportions.height;
+
+		for ( i = inst.snapElements.length - 1; i >= 0; i-- ) {
+
+			l = inst.snapElements[ i ].left - inst.margins.left;
+			r = l + inst.snapElements[ i ].width;
+			t = inst.snapElements[ i ].top - inst.margins.top;
+			b = t + inst.snapElements[ i ].height;
+
+			if ( x2 < l - d || x1 > r + d || y2 < t - d || y1 > b + d ||
+					!$.contains( inst.snapElements[ i ].item.ownerDocument,
+					inst.snapElements[ i ].item ) ) {
+				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 } )
+						) );
+				}
+				inst.snapElements[ i ].snapping = false;
+				continue;
+			}
+
+			if ( o.snapMode !== "inner" ) {
+				ts = Math.abs( t - y2 ) <= d;
+				bs = Math.abs( b - y1 ) <= d;
+				ls = Math.abs( l - x2 ) <= d;
+				rs = Math.abs( r - x1 ) <= d;
+				if ( ts ) {
+					ui.position.top = inst._convertPositionTo( "relative", {
+						top: t - inst.helperProportions.height,
+						left: 0
+					} ).top;
+				}
+				if ( bs ) {
+					ui.position.top = inst._convertPositionTo( "relative", {
+						top: b,
+						left: 0
+					} ).top;
+				}
+				if ( ls ) {
+					ui.position.left = inst._convertPositionTo( "relative", {
+						top: 0,
+						left: l - inst.helperProportions.width
+					} ).left;
+				}
+				if ( rs ) {
+					ui.position.left = inst._convertPositionTo( "relative", {
+						top: 0,
+						left: r
+					} ).left;
+				}
+			}
+
+			first = ( ts || bs || ls || rs );
+
+			if ( o.snapMode !== "outer" ) {
+				ts = Math.abs( t - y1 ) <= d;
+				bs = Math.abs( b - y2 ) <= d;
+				ls = Math.abs( l - x1 ) <= d;
+				rs = Math.abs( r - x2 ) <= d;
+				if ( ts ) {
+					ui.position.top = inst._convertPositionTo( "relative", {
+						top: t,
+						left: 0
+					} ).top;
+				}
+				if ( bs ) {
+					ui.position.top = inst._convertPositionTo( "relative", {
+						top: b - inst.helperProportions.height,
+						left: 0
+					} ).top;
+				}
+				if ( ls ) {
+					ui.position.left = inst._convertPositionTo( "relative", {
+						top: 0,
+						left: l
+					} ).left;
+				}
+				if ( rs ) {
+					ui.position.left = inst._convertPositionTo( "relative", {
+						top: 0,
+						left: r - inst.helperProportions.width
+					} ).left;
+				}
+			}
+
+			if ( !inst.snapElements[ i ].snapping && ( ts || bs || ls || rs || first ) ) {
+				( inst.options.snap.snap &&
+					inst.options.snap.snap.call(
+						inst.element,
+						event,
+						$.extend( inst._uiHash(), {
+							snapItem: inst.snapElements[ i ].item
+						} ) ) );
+			}
+			inst.snapElements[ i ].snapping = ( ts || bs || ls || rs || first );
+
+		}
+
+	}
+} );
+
+$.ui.plugin.add( "draggable", "stack", {
+	start: function( event, ui, instance ) {
+		var min,
+			o = instance.options,
+			group = $.makeArray( $( o.stack ) ).sort( function( a, b ) {
+				return ( parseInt( $( a ).css( "zIndex" ), 10 ) || 0 ) -
+					( parseInt( $( b ).css( "zIndex" ), 10 ) || 0 );
+			} );
+
+		if ( !group.length ) { return; }
+
+		min = parseInt( $( group[ 0 ] ).css( "zIndex" ), 10 ) || 0;
+		$( group ).each( function( i ) {
+			$( this ).css( "zIndex", min + i );
+		} );
+		this.css( "zIndex", ( min + group.length ) );
+	}
+} );
+
+$.ui.plugin.add( "draggable", "zIndex", {
+	start: function( event, ui, instance ) {
+		var t = $( ui.helper ),
+			o = instance.options;
+
+		if ( t.css( "zIndex" ) ) {
+			o._zIndex = t.css( "zIndex" );
+		}
+		t.css( "zIndex", o.zIndex );
+	},
+	stop: function( event, ui, instance ) {
+		var o = instance.options;
+
+		if ( o._zIndex ) {
+			$( ui.helper ).css( "zIndex", o._zIndex );
+		}
+	}
+} );
+
+return $.ui.draggable;
+
+} ) );