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openidea/wit/events.wit
l0ng-ai 7c71cf8b6a feat(plugins): leave room in plugin API 1.0 for what will grow
Released 1.x types never change, so the sets and records that will have
to grow are opened up before the API is frozen:

- Event kinds and action sources are strings; `event`, view `body`,
  `view-event` and `field-value` get an `other(extension)` case (a kind and
  JSON data) that carries later cases to older plugins and IDEs. An IDE
  refuses an event kind it doesn't know, says a view body needs a newer
  IDE, and leaves out unknown form fields.
- Completion items can be snippets, match on `filter-text` and bring
  `additional-edits` (imports). Code actions can carry `data` instead of
  edits; the new `resolve-code-action` export computes them when the user
  picks the action, under the command budget, through the existing resolve
  path.
- Diagnostics name their `source`, carry `tags` (`unnecessary`,
  `deprecated`) and `related` locations.
- The SDK's enums are `#[non_exhaustive]` with `Other` variants;
  `Diagnostic::new`, `Providers::resolve_code_action`.
- README: 1.x calls stay synchronous and pass documents whole; async and
  incremental sync come later behind the host adapter or a new interface.

Official plugins and fixtures rebuilt.
2026-11-04 20:10:09 +08:00

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package openidea:plugin@1.0.0;
/// Workbench events, delivered in batches to `event-handler.handle`.
interface events {
use types.{error, extension};
record action-performed {
/// Action id (`editor.duplicate-line`).
action: string,
title: string,
/// How the user started it: `keyboard`, `menu`, `toolbar`,
/// `context-menu`, `search` or `other` (more may be added).
source: string,
/// Its keyboard shortcut, when it has one (`Ctrl+D`).
shortcut: option<string>,
}
variant event {
file-opened(string),
file-saved(string),
editor-focused(option<string>),
action-performed(action-performed),
vcs-changed(string),
scheduled,
/// A kind added after 1.0 (subscribed to by its name).
other(extension),
}
/// Delivers `kind` events from now on, for the rest of the session (also
/// across idle reclaim: an event activates the plugin again). Declare
/// `activation = ["on-event:<kind>"]` to get them before first use.
/// Kinds: `file-opened`, `file-saved`, `editor-focused` (the focused editor
/// changed), `vcs-changed` (a repository's state changed: commit,
/// checkout, fetch…), `action-performed` (an IDE action ran) and
/// `scheduled` (the `on-schedule` period elapsed); later IDEs add more,
/// and an IDE that doesn't know one fails with `invalid`.
/// Requires `events` (`events.input` for `action-performed`).
subscribe: func(kind: string) -> result<_, error>;
unsubscribe: func(kind: string);
}
/// Long-running work with a progress indicator. While a task is open, the
/// call that began it may run for the background budget (60 s) instead of 5 s.
interface tasks {
resource task {
/// `done` of `total` units (`none`: indeterminate), with a short status.
report: func(done: u32, total: option<u32>, message: option<string>);
/// The user cancelled it: stop soon and return.
is-cancelled: func() -> bool;
}
/// Starts a task shown in the status bar; dropping it ends it.
begin: func(title: string, cancellable: bool) -> task;
}