mxDragSource

function mxDragSource( element, dropHandler )

Constructs a new drag source for the given element.

mxDragSource.prototype.isEnabled = function()

Returns enabled.

mxDragSource.prototype.setEnabled = function( value )

Sets enabled.

mxDragSource.prototype.isGuidesEnabled = function()

Returns guidesEnabled.

mxDragSource.prototype.setGuidesEnabled = function( value )

Sets guidesEnabled.

mxDragSource.prototype.isGridEnabled = function()

Returns gridEnabled.

mxDragSource.prototype.setGridEnabled = function( value )

Sets gridEnabled.

mxDragSource.prototype.getGraphForEvent = function( evt )

Returns the graph for the given mouse event.  This implementation returns null.

mxDragSource.prototype.getDropTarget = function( graph, x, y, evt )

Returns the drop target for the given graph and coordinates.  This implementation uses mxGraph.getCellAt.

mxDragSource.prototype.createDragElement = function( evt )

Creates and returns a clone of the <dragElementPrototype> or the element if the former is not defined.

mxDragSource.prototype.createPreviewElement = function( graph )

Creates and returns an element which can be used as a preview in the given graph.

mxDragSource.prototype.isActive = function()

Returns true if this drag source is active.

mxDragSource.prototype.reset = function()

Stops and removes everything and restores the state of the object.

mxDragSource.prototype.mouseDown = function( evt )

Returns the drop target for the given graph and coordinates.  This implementation uses mxGraph.getCellAt.

To ignore popup menu events for a drag source, this function can be overridden as follows.

let mouseDown = dragSource.mouseDown;

dragSource.mouseDown = function(evt)
{
  if (!mxEvent.isPopupTrigger(evt))
  {
    mouseDown.apply(this, arguments);
  }
};

mxDragSource.prototype.startDrag = function( evt )

Creates the dragElement using createDragElement.

mxDragSource.prototype.stopDrag = function()

Invokes removeDragElement.

mxDragSource.prototype.removeDragElement = function()

Removes and destroys the dragElement.

mxDragSource.prototype.getElementForEvent = function( evt )

Returns the topmost element under the given event.

mxDragSource.prototype.graphContainsEvent = function( graph, evt )

Returns true if the given graph contains the given event.

mxDragSource.prototype.mouseMove = function( evt )

Gets the graph for the given event using getGraphForEvent, updates the currentGraph, calling dragEnter and dragExit on the new and old graph, respectively, and invokes dragOver if currentGraph is not null.

mxDragSource.prototype.mouseUp = function( evt )

Processes the mouse up event and invokes drop, dragExit and stopDrag as required.

mxDragSource.prototype.removeListeners = function()

Actives the given graph as a drop target.

mxDragSource.prototype.dragEnter = function( graph, evt )

Actives the given graph as a drop target.

mxDragSource.prototype.dragExit = function( graph, evt )

Deactivates the given graph as a drop target.

mxDragSource.prototype.dragOver = function( graph, evt )

Implements autoscroll, updates the currentPoint, highlights any drop targets and updates the preview.

mxDragSource.prototype.drop = function( graph, evt, dropTarget, x, y )

Returns the drop target for the given graph and coordinates.  This implementation uses mxGraph.getCellAt.