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Drag and drop symbols only on allowable regions

You can able to drag and drop nodes only to a desired location using diagram’s client side dragOver event. The argument newValue of the dragOver event returns the current position and dimension of the dragging element, with which you can able to restrict the element dropping on certain region. Similarly, you can allow the element to drop on certain element using target argument which returns underlying element at current mouse position.

The following code illustrates how to prevent dropping a node outside certain region and outside certain element.

Java-script

 

Article ID: Published Date: Last Revised Date: Platform: Control:
5802 11/27/2015 11/28/2015 JavaScript ejDiagram
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