Ensure 'All Files' key present in File Dialog Filters

[colin-grant-work]

Signed-off-by: Colin Grant colin.grant@ericsson.com

What it does

Fixes #8072 by ensuring that a properly formatted 'All Files' key will be present in the filter object. Formerly, 'All Files' was added to an array containing the keys of the filter object, but there was no guarantee that the filter object itself would have an entry corresponding to that value.

How to test

1. Build with this code and start Theia in a browser
2. Open the File menu -> Open Workspace file dialog.
3. At the bottom of the file dialog, select various filter options.
4. Observe that none of them throw an error.

Review checklist

• as an author, I have thoroughly tested my changes and carefully followed the review guidelines

Reminder for reviewers

• as a reviewer, I agree to behave in accordance with the review guidelines

[vince-fugnitto]

@colin-grant-work just a few general comments:

1. I was unable to reproduce the issue on master with the steps provided, is there something I might be missing (I used open workspace).
2. I think that including all files is a bug we currently have, for example for open workspace only the two other filters should be applied, we cannot open any arbitrary file (all file) as a workspace anyways

[vince-fugnitto]

@colin-grant-work just a few general comments:

I don't think the 2nd comment is necessarily part of this pull-request, the bug exists in master, we should not show all files for open workspace. I'll open a bug for it.

[colin-grant-work]

@vince-fugnitto, do you think it's a problem in general to include a default 'All Files' option? If you think that it shouldn't be included by default in any filtered file dialog, it can easily be removed as part of this PR - it makes it even simpler :) - but if you think it should be included in some file dialogues but not that particular one, then it's a bit more complicated.

[colin-grant-work]

@colin-grant-work just a few general comments:

1. I was unable to reproduce the issue on master with the steps provided, is there something I might be missing (I used open workspace).

Re: reproduction, it may only occur in the browser. Electron seems to use the native file dialogues at least some of the time, and I don't see the error in that case, but I see it consistently in the browser, which uses the Theia renderer. I've updated the reproduction steps here and in the issue to reflect that.

[vince-fugnitto]

@vince-fugnitto, do you think it's a problem in general to include a default 'All Files' option? If you think that it shouldn't be included by default in any filtered file dialog, it can easily be removed as part of this PR - it makes it even simpler :) - but if you think it should be included in some file dialogues but not that particular one, then it's a bit more complicated.

I think the best thing would be to update the props to be able to include control the behavior since it's likely that only the open workspace and save workspace as dialog will need to be updated (so the prop can be on by default).

[colin-grant-work]

@vince-fugnitto, yes, it seems like changing that behavior of the file dialogue would go beyond just fixing the present error. Let me know if you're still unable to reproduce the error on master even in the browser.

[vince-fugnitto]

I verified that the changes work correctly for different types of dialogs (namely open workspace and save workspace as have the correct filters applied), and no error was thrown. I also verified the behavior on electron as a sanity check. I have a small suggestion.

[vince-fugnitto]

Thank you for the changes @colin-grant-work!
I verified them again and they work very well (no more errors thrown).

[vince-fugnitto]

I'll merge tomorrow if there no objections :)