Keeping track of deleted nodes

@jothibaskaran wrote:

Hi,

This is how my delete functionality is implemented:

var nodeToDelete = this.diagram.findNodeForKey(node.data.key);
    model.startTransaction('delete node');
    for (let i = 0; i < this.diagram.model['linkDataArray'].length; i++) {
        if (this.diagram.model['linkDataArray'][i]['from'] === node.data['key']) {
            const toNodeKey = this.diagram.model['linkDataArray'][i]['to'];
            const toNodeData = _.find(this.diagram.model['nodeDataArray'], { 'key': toNodeKey });
        }
    }
    model.remove(nodeToDelete);
    model.commitTransaction('delete node');

I want to be able to keep a separate list of all the deleted nodes from my diagram. So basically when a user deleted a node, i want to make an entry of that node in this list, and if the user hits Undo, that entry must be removed from the list.

How can this be achieved?

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