f2c3f3b168
## Goal This PR creates the initial settings ui structure with the primary goal of making a settings UI that is - Comprehensive: All settings are available through the UI - Correct: Easy to understand the underlying JSON file from the UI - Intuitive - Easy to implement per setting so that UI is not a hindrance to future settings changes ### Structure The overall structure is settings layer -> data layer -> ui layer. The settings layer is the pre-existing settings definitions, that implement the `Settings` trait. The data layer is constructed from settings primarily through the `SettingsUi` trait, and it's associated derive macro. The data layer tracks the grouping of the settings, the json path of the settings, and a data representation of how to render the controls for the setting in the UI, that is either a marker value for the component to use (avoiding a dependency on the `ui` crate) or a custom render function. Abstracting the data layer from the ui layer allows crates depending on `settings` to implement their own UI without having to add additional UI dependencies, thus avoiding circular dependencies. In cases where custom UI is desired, and a creating a custom render function in the same crate is infeasible due to circular dependencies, the current solution is to implement a marker for the component in the `settings` crate, and then handle the rendering of that component in `settings_ui`. ### Foundation This PR creates a macro and a trait both called `SettingsUi`. The `SettingsUi` trait is added as a new trait bound on the `Settings` trait, this allows the type system to guarantee that all settings implement UI functionality. The macro is used to derived the trait for most types, and can be modified through attributes for unique cases as well. A derive-macro is used to generate the settings UI trait impl, allowing it the UI generation to be generated from the static information in our code base (`default.json`, Struct/Enum names, field names, `serde` attributes, etc). This allows the UI to be auto-generated for the most part, and ensures consistency across the UI. #### Immediate Follow ups - Add a new `SettingsPath` trait that will be a trait bound on `SettingsUi` and `Settings` - This trait will replace the `Settings::key` value to enable `SettingsUi` to infer the json path of it's derived type - Figure out how to render `Option<T> where T: SettingsUi` correctly - Handle `serde` attributes in the `SettingsUi` proc macro to correctly get json path from a type's field and identity Release Notes: - N/A --------- Co-authored-by: Ben Kunkle <ben@zed.dev>
This contains the code for Zed's Vim emulation mode.
Vim mode in Zed is supposed to primarily "do what you expect": it mostly tries to copy vim exactly, but will use Zed-specific functionality when available to make things smoother. This means Zed will never be 100% vim compatible, but should be 100% vim familiar!
The backlog is maintained in the #vim channel notes.
Testing against Neovim
If you are making a change to make Zed's behavior more closely match vim/nvim, you can create a test using the NeovimBackedTestContext.
For example, the following test checks that Zed and Neovim have the same behavior when running * in visual mode:
#[gpui::test]
async fn test_visual_star_hash(cx: &mut gpui::TestAppContext) {
let mut cx = NeovimBackedTestContext::new(cx).await;
cx.set_shared_state("ˇa.c. abcd a.c. abcd").await;
cx.simulate_shared_keystrokes(["v", "3", "l", "*"]).await;
cx.assert_shared_state("a.c. abcd ˇa.c. abcd").await;
}
To keep CI runs fast, by default the neovim tests use a cached JSON file that records what neovim did (see crates/vim/test_data), but while developing this test you'll need to run it with the neovim flag enabled:
cargo test -p vim --features neovim test_visual_star_hash
This will run your keystrokes against a headless neovim and cache the results in the test_data directory. Note that neovim must be installed and reachable on your $PATH in order to run the feature.
Testing zed-only behavior
Zed does more than vim/neovim in their default modes. The VimTestContext can be used instead. This lets you test integration with the language server and other parts of zed's UI that don't have a NeoVim equivalent.