The following list contains events that you can react on:

• change - generic event triggered for any change on the element
• change:position - triggered when the element changes its position
• change:angle - triggered when the element gets rotated
• change:size - triggered when the element gets resized
• change:attrs - triggered when the element changes its attributes
• change:embeds - triggered when other cells were embedded into the element
• change:parent - triggered when the element got embedded into another element
• change:z - triggered when the element is moved in the z-level (toFront and toBack)
• transition:start - triggered when a transition starts.
• transition:end - triggered when a transiton ends.

element.on('change:position', function() { alert('element moved') })