[Preview image]: close image when file is deleted from OS.

[couzteau]

It should do the same that brackets does for text files: close image when brackets gains focus and show either the no-editor view or show an file from the working set.

Steps:

1. Launch Brackets and open the default sample folder.
2. Right click on the image quick-edit.png and select "Show in OS".
3. Delete this image from OS.
4. Back to Brackets

Results:
At step 4, the image is still displayed when brackets gains focus.

Expected:
At step4, it should do the same that brackets does for text files: close the image and display either the no-editor view or show a file from the working set.

Note: when this is fixed, we should verify the original complete set of steps from #5742 (which this bug is a spinoff of)

[couzteau]

related #5742
fixed by pull request: #5910

[couzteau]

verified fix

[peterflynn]

Nominating for Sprint 35... should be fairly simple to wire up to FileSyncManager and/or FS "change" events

[njx]

For future reference - please make sure to comment when reopening a bug so we know why it was reopened. (In this case it sounds like it was because we had to back out the original fix.)

[njx]

Medium priority to @couzteau

[couzteau]

Suggesting to move this bug to sprint 36 per @peterflynn 's recommendation, due to upcoming changes in the area of file sync / file watchers

[couzteau]

Looks like this will be fixed automagically once file watchers get merged. file watchers will send a close command when the file is renamed or deleted. Fix in progress.