How to get an alert when close the tab (without saving)?

Developers
1

HI,

how to get an alert when we close the tab (only when modeler has edited).
Here is step by step explanation

1> I launched my modeler
2> I drawn some shapes
3> I did not save that and closing the tab ,here i’m looking for alert

Thanks in advance

2

I assume you’re referring to the demo.bpmn.io page’s behavior.

You can check wether the diagram is dirty through the command stack:

const commandStack = modeler.get('commandStack');

const dirty = commandStack.canUndo();

As for confirming:

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