* Dismissing a preview with an unfocused appearance is what's really broken here. That's never going to be able to go back to the original table, because the original table will be replaced with the unfocused appearance's table on the dismiss.
- Going to fix that by using the focused appearance's table by default for the scheme when there's an unfocused appearance.
* This is a little janky still, we flash the old schemes through on dismiss, which is probably wrong.
This commit adds the ability to interact with subtrees of panes.
Have you ever thought that you don't have enough regression testing to
do? Boy do I have the PR for you! This breaks all kinds of assumptions
about what is or is not focused, largely complicated by the fact that a
pane is not a proper control. I did my best to cover as many cases as I
could, but I wouldn't be surprised if there are some things broken that
I am unaware of.
Done:
- Add `parent` and `child` movement directions to move up and down the
tree respectively
- When a parent pane is selected it will have borders all around it in
addition to any borders the children have.
- Fix focus, swap, split, zoom, toggle orientation, resize, and move to
all handle interacting with more than one pane.
- Similarly the actions for font size changing, closing, read-only, clearing
buffer, and changing color scheme will distribute to all children.
- This technically leaves control focus on the original control in the
focused subtree because panes aren't proper controls themselves. This
is also used to make sure we go back down the same path with the
`child` movement.
- You can zoom a parent pane, and click between different zoomed
sub-panes and it won't unzoom you until you use moveFocus or another
action. This wasn't explicitly programmed behavior so it is probably
buggy (I've quashed a couple at least). It is a natural consequence of
showing multiple terminals and allowing you to focus a terminal and a
parent separately, since changing the active pane directly does not
unzoom. This also means there can be a disconnect between what pane is
zoomed and what pane is active.
## Validation Steps Performed
Tested focus movement, swapping, moving panes, and zooming.
Closes#10733
This entirely removes `KeyMapping` from the settings model, and builds on the work done in #9543 to consolidate all actions (key bindings and commands) into a unified data structure (`ActionMap`).
## References
#9428 - Spec
#6900 - Actions page
Closes#7441
## Detailed Description of the Pull Request / Additional comments
The important thing here is to remember that we're shifting our philosophy of how to interact/represent actions. Prior to this, the actions arrays in the JSON would be deserialized twice: once for key bindings, and again for commands. By thinking of every entry in the relevant JSON as a `Command`, we can remove a lot of the context switching between working with a key binding vs a command palette item.
#9543 allows us to make that shift. Given the work in that PR, we can now deserialize all of the relevant information from each JSON action item. This allows us to simplify `ActionMap::FromJson` to simply iterate over each JSON action item, deserialize it, and add it to our `ActionMap`.
Internally, our `ActionMap` operates as discussed in #9428 by maintaining a `_KeyMap` that points to an action ID, and using that action ID to retrieve the `Command` from the `_ActionMap`. Adding actions to the `ActionMap` automatically accounts for name/key-chord collisions. A `NameMap` can be constructed when requested; this is for the Command Palette.
Querying the `ActionMap` is fairly straightforward. Helper functions were needed to be able to distinguish an explicit unbinding vs the command not being found in the current layer. Internally, we store explicitly unbound names/key-chords as `ShortcutAction::Invalid` commands. However, we return `nullptr` when a query points to an unbound command. This is done to hide this complexity away from any caller.
The command palette still needs special handling for nested and iterable commands. Thankfully, the expansion of iterable commands is performed on an `IMapView`, so we can just expose `NameMap` as a consolidation of `ActionMap`'s `NameMap` with its parents. The same can be said for exposing key chords in nested commands.
## Validation Steps Performed
All local tests pass.
## Summary of the Pull Request
Allow schemes to be previewed as the user hovers over them in the Command Palette.
## References
* Branched off of #8392, which is why the commit history is so polluted. 330a8e8 : 544b2fd has the interesting commits
* #5400: cmdpal megathread
### Potential follow-ups
* changing the font size
* changing the font face
* changing the opacity of acrylic
## PR Checklist
* [x] Closes#6689, a last straggling FHL PR
* [x] I work here
* [ ] Tests added/passed
* [n/a] Requires documentation to be updated - I don't think so
## Detailed Description of the Pull Request / Additional comments
This works by inserting a "preview" `TerminalSettings` into the settings hierarchy, before the `TermControl`'s runtime settings, and after the ones from the actual `CascadiaSettings`. This allows us to modify that preview settings object, then discard it when we're done with the preview.
This could also be used for other settings in the future - I built it to be extensible to other `ShortcutAction`s, though I haven't implemented those yet.
## Validation Steps Performed
* Select a colorscheme - it becomes the active one
* `colortool -x <scheme>` after selecting a scheme - colortool overrides the selected scheme
* Select a colorscheme after a `colortool -x <scheme>` after selecting a scheme - the scheme in the palette becomes the active one
* Pressing <kbd>esc</kbd> at any point to dismiss the command palette - scheme returns to the previous one
* reloading the settings - returns to the scheme in the settings
