Truncate file names while preserving file extensions

[JammingBen]

Related Issue

• Truncate filename instead of file extension #1758
• https://jira.owncloud.com/browse/WEB-1026

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Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Technical debt
• Tests

Checklist:

• Code changes
• Unit tests added
• Acceptance tests added
• Documentation added/updated

Open tasks:

• ...

[JammingBen]

A few notes/questions:

• Do we want to separate the file name and the extension, e.g. by using the muted class on the extension? OC10 currently does this: Nvm, I saw that the Jira ticket already mentions this.
  
• Do we want to have tooltips on truncated file names? The issue I see here is that we can't determine if a file name is being truncated or not. So we'd have to implement tooltips for all file names. Edit: I think this will become obsolete with what we discussed for Show path / parent folder to distinguish files web#5953 as we want introduce a separate property for tooltips.
• With very long folder paths, the filename will not be displayed at all. It was like this before, and I don't see an easy way to overcome this, but I want to point it out. It can be kinda confusing now with the file extension showing at the end. Edit: After discussing Show path / parent folder to distinguish files web#5953, I'd say we ignore it for now as it will be irrelevant after.
  

@kulmann @pascalwengerter Any opinions here?

[fschade]

@JammingBen just an idea, if we have a path in the resource name, can we create 3 containers?

(a/very/long/pa...)(aLongFileNa....)(.ext)
(path)(fileName)(fileExtension)

[JammingBen]

Actually it is already divided in 3 containers. But as mentioned above, in the near future we will have the path beneath the file name (owncloud/web#5953) anyway, so the problem becomes kinda obsolete IMO.

[sonarcloud]

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