The focused main view already lets you point at a diff line and act on it
(dive into staging, edit it, open it in a PR). This makes it a staging surface
in its own right: press space to stage — or unstage — the selected line without
diving into the separate staging view.
To make that usable, the selection is now shown automatically whenever the main
view holds a diff, anchored on the first change line already visible (so the
view doesn't jump), rather than being toggled on demand from the middle of the
view. That frees space for staging and means there's always a line to act on.
Which contexts show a diff is marked by a new types.DiffMainViewContext, because
"shows a diff" is the right signal, not "is stageable": reflog shows a diff (its
selection drives edit/PR/navigation) but can't be staged, while a branch's log
or the status dashboard show no diff and get no selection at all.
Staging is delegated to the side panel beneath via a GetOnStageFocusedMainView
handler mirroring GetOnClickFocusedMainView, so what "stage" means stays the
panel's concern (the working tree stages/unstages; commits will later add to a
custom patch). The files handler resolves the line's patch identity from the
diff-line metadata, maps it to a patch line, and applies a one-line patch,
choosing stage vs unstage from whether the shown diff is the unstaged or staged
side (diffSplitState).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
I copied all files except dot files (.github and .gitignore), the _examples
folder, and go.mod/go.sum.
At some point we may want to copy the files back to the gocui repo when other
clients (e.g. lazydocker) want to use the newer versions of them.
Can be used for doing additional click handling in list views.
Like the GetOnDoubleClick hook we should try to find a better design for this
than putting it in HasKeybindings and BaseContext, since it is only used by list
contexts.
Co-authored-by: Stefan Haller <stefan@haller-berlin.de>
When this was originally introduced, it handled single clicks on a list entry
(treating them similar to a double-click by checking whether the click was on
the selected entry). Arguably it should have been called OnDoubleClick back then
already; but when we later changed it to do actual double-click detection (see
37197b8e9a), we should have renamed the methods.
This begins a big refactor of moving more code out of the Gui struct into contexts, controllers, and helpers. We also move some code into structs in the
gui package purely for the sake of better encapsulation
