I can only guess, but I think this was a typo (or a copy-paste-o) when this code
was written. It was introduced in 55af07a1bb, and I think the defer was kept by
accident; if it had been on purpose, then the statement would have been put
right after the Lock call.
SelectedCommit is context-dependent and points to SelectedLocalCommit,
SelectedReflogCommit, or SelectedSubCommit depending on which panel is active.
If none of these panels is active, it returns the selected local commit, which
is probably the most useful default (e.g. when defining custom commands for the
Files panel).
Probably not the most import feature in the world, but when resizing the
terminal window while multiple popup panels were open at the same time, we would
only resize the topmost one.
The main reason for changing this is because it makes the next commit easier to
implement.
An inactive selection is one where the view is part of the context stack, but
not the active view. For example, the files view when you enter the staging
panel, or any view when you open a panel.
As part of making lazygit more discoverable, there are certain keys which you almost certainly
need to press when you're in a given mode e.g. 'v' to paste commits when cherry-picking. This
commit prominently shows these keybinding suggestions alongside the others in the option view.
I'm using the same colours for these keybindings as is associated with the mode elsewhere e.g.
yellow for rebasing and cyan for cherry-picking. The cherry-picking one is a bit weird because
we also use cyan text to show loaders and app status at the bottom left so it may be confusing,
but I haven't personally found it awkward from having tested it out myself.
Previously we would render these options whenever a new context was activated, but now that we
need to re-render options whenever a mode changes, I'm instead rendering them on each screen
re-render (i.e. in the layout function). Given how cheap it is to render this text, I think
it's fine performance-wise.
We've been sometimes using lo and sometimes using my slices package, and we need to pick one
for consistency. Lo is more extensive and better maintained so we're going with that.
My slices package was a superset of go's own slices package so in some places I've just used
the official one (the methods were just wrappers anyway).
I've also moved the remaining methods into the utils package.
This is a pickle: initially I wanted it so that a filter would cancel automatically if the current context lost focus.
But there are situations where you want to retain the focus, e.g. when a popup appears, or when you view the commits
of a branch. The issue is that when you view the commits of a branch, the branches context is removed from the context
stack. Even if this were not the case, you could imagine going branches -> sub-commits -> files -> sub-commits, where
in that case branches would definitely be off the stack upon navigating to the files context.
So because I'm too lazy to find a proper solution to this problem, I'm just making it so that filters in side contexts
are retained unless explicitly cancelled.
There's another edge case this commit handles which is that if I'm in the sub-commits context via the branches context
and start a search, then navigate to the reflog context and hit enter to get to the sub-commits context again, I need
to cancel the search before I switch. Likewise with the commit files context.
When we use the one panel for the entire commit message, its tricky to have a keybinding both for adding a newline and submitting.
By having two panels: one for the summary line and one for the description, we allow for 'enter' to submit the message when done from the summary panel,
and 'enter' to add a newline when done from the description panel. Alt-enter, for those who can use that key combo, also works for submitting the message
from the description panel. For those who can't use that key combo, and don't want to remap the keybinding, they can hit tab to go back to the summary panel
and then 'enter' to submit the message.
We have some awkwardness in that both contexts (i.e. panels) need to appear and disappear in tandem and we don't have a great way of handling that concept,
so we just push both contexts one after the other, and likewise remove both contexts when we escape.
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
