When drag-drop node, set whether to allow to copy node. It is valid when [setting.edit.enable = true]
Default: true
1. If isCopy = true and isMove = true, when drag-drop node, press Ctrl-Key or Cmd-key can copy node, don't press Ctrl-Key or Cmd-key can move node.
2. If isCopy = true and isMove = false, when drag-drop node, will copy node.
3. If isCopy = false and isMove = true, when drag-drop node, will move node.
4. If isCopy = false and isMove = false, so disable to drag-drop node.
var setting = {
edit: {
enable: true,
drag: {
isCopy: true,
isMove: false
}
}
};
......