Double-clicking a remote branch should switch to existing local branch instead of prompting to create a new one

[Genfood]

Current Behavior:
When double-clicking a branch in the side menu under remotes (e.g., origin/master), a pop up will be show which prompts me to create a new local branch, even if a local branch already exists and is tracking this exact remote branch.

Expected Behavior:
If the remote branch is already tracked locally, double-clicking it should simply switch to the existing local branch. GitFork does exactly this: when a local branch exists for a remote branch, it automatically chooses the (first) local branch that tracks it.

Reasoning:
When dealing with multiple origins and several branches, navigation can become confusing. I prefer clicking the remote branch I want to check out because then I know exactly which origin and branch I am targeting. Implementing this would make navigating between branches much easier. If a remote branch is currently not tracked, that has been ckicked, the default "New Branch" pop up should be shown.

On top, users can still use the right-click menu option Create New Local Branch Here if they want to create multiple local branches referring to the same remote.

The right click menu option Create New Local Branch Here can be used, if one likes to create more than one local branch which refers to this remote.

[jorio]

Would it be a good first step to bring up CheckoutDialog when double-clicking a remote branch?

That's the dialog that appears when you double-click a commit in GraphView. If there's a local branch at the given commit, the first suggestion in CheckoutDialog is to switch to that branch.

Assuming we go with CheckoutDialog: What should we do when the local branch isn't up-to-date with the upstream that was double-clicked? Should CheckoutDialog still suggest switching to the local branch, with a message saying that it's N commits behind the upstream?

[Genfood]

First step for sure. I guess I personally would still prefer, the way outlined in my comment above. I am not a fan about to many pop ups, let it be opinionated, I could still right click to do something else. I don't see why I would like to merge or starting a new branch on a double click.

Relating the behaviour.
Off the top of my head, I would just switch to the corespondent local branch, no pulling. Displaying the default indicator, that the branch is behind the remote branch.

On the other hand I don't see a problem with pulling either. I could switch to a previous commit later.