The easiest way to decorate certain model items with a custom IClipboardHelper implementation is via the various decorators available on GraphDecorator:Using GraphDecorator to attach a custom IClipboardHelper to nodes
const nodeDecorator = graph.decorator.nodes// Set a custom IClipboardHelper for all nodes in the graphnodeDecorator.clipboardHelper.addConstant(new MyClipboardHelper())
This method is called during the copy operation of the given item.
If the source graph is a managed folding view, the item is always a master item.
This instance is retained and reused during the paste operation. As a result, you can maintain state on the instance and retrieve it in a subsequent invocation of onPasted.
This method is called during the cut operation of the given item.
If the source graph is a managed folding view, the item is always a master item.
This instance is retained and reused during the paste operation. As a result, you can maintain state on the instance and retrieve it in a subsequent invocation of onPasted.
This method is called after the item has been pasted from the clipboard.
The item is always a master item since the clipboard graph is not a managed folding view.
The instance which has been retrieved during onCopied or onCut for the original item is retained and re-used here. This allows the developer to store state in these calls and then retrieve it here to modify the pasted item.