fix(#17820): prevent event propagation to browser history when clicki…

[philbert]

This is a partial fix to bug #17820 which pushes 4 items to the browser history when clicking on the state object in the lovelace GUI.

It's only a partial fix because in my local (very limited) testing this change appears to reduces this number from 4 to 2.

As it is a small change, I wanted to raise this PR to get some early feedback as I am not a frontend webdev, but it is such a hot-button topic that so many users are complaining about, and from my investigations it looked like it should be a pretty simple issue to fix so I wanted to give it a try.

I think I can complete the fix so that only a single item is pushed to the browser history, but it would be nice to have some feedback from some proper frontend webdevs.

Proposed change

The fix partially prevents duplicate history entries by adding a new _handleValueAction method that checks if the action event originated directly from the value div or its immediate state child div. Event propagation is also stopped to prevent any potential bubbling that could trigger multiple history updates.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New feature (thank you!)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Example configuration

None

Additional information

• This PR fixes or closes issue: fixes Back Button doesn't work #17820
• This PR is related to issue or discussion:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
• There is no commented out code in this PR.
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

[home-assistant]

Hi @philbert

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Once you do that we will be able to review and accept this pull request.

Thanks!

[home-assistant]

Please take a look at the requested changes, and use the Ready for review button when you are done, thanks 👍

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Stale

[philbert]

After more testing I can see this is not working as expected.