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Improve Undo and Redo Support #1182
Undo and redo support is currently very limited. It needs to be expanded to fix issues with the dirty state indicator and to allow undoing any operation as long the text editor isn't being used. If the text editor is being used, then undo support will be reduced.
Also include #1199
referenced this issue
Apr 25, 2018
A shared undo/redo strategy was chosen because multiple diagrams may be interacting with the same AADL packages. In such cases, actions must be reversed in the order they were performed.
Text Editor Limitations
Undo and redo behavior will be degraded when the text editor is open due to implementation challenges. The text documents have their own undo stacks. When the graphical editor edits such a model, the change is added to the document's stack.