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openidea/wit/events.wit
T
l0ng-ai a8036ce6fa feat(plugins): open two texts in the diff viewer (API 1.7) (#3055)
Plugins could show their own content in an editor tab (open-content-tab) but
could open the diff viewer only as the reply to one of that tab's actions. A
review plugin (a merge request's files, say) had no way to show a file's
before and after.

views.open-diff opens two texts in the invoking window's diff viewer, with
optional labels and title and a file name that picks the syntax highlighting;
web views send { op: "open-diff", ... }. The SDK wraps it as host::open_diff
with a mock. The plugin API moves to 1.7.0 (1.6.0 is released) and the checked-in
components are rebuilt.
2026-11-13 12:02:36 +08:00

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package openidea:plugin@1.7.0;
/// 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.
/// API 1.4 also delivers `file-closed` (JSON path string), `settings-changed`
/// (JSON array of the plugin's changed setting keys), and `input-mode-changed`
/// (JSON {path, mode, sub}) through `other`. The last needs `events.input`.
/// API 1.5 also delivers `extensions-changed` (JSON array of the extension
/// points this plugin declares whose contributions changed) through `other`,
/// to the declaring plugin only and without a capability.
/// Kinds: `file-opened`, `file-saved`, `document-changed` (versioned UTF-16
/// replacements from explicit path subscriptions), `websocket-ready`
/// (a host-owned connection has messages to drain), `files-changed` (batched disk changes
/// as `other`, with created/modified/removed path lists in JSON), `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>;
/// Replaces this kind's subscription with project-relative globs (OR).
/// Empty globs pause delivery; `subscribe` restores unfiltered delivery.
/// Kinds: file-opened, file-saved, document-changed, files-changed. Requires `events`.
subscribe-paths: func(kind: string, globs: list<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,
/// and each `report` or `is-cancelled` renews that budget: work that keeps
/// saying it is alive is not cut off, while work that goes quiet is.
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;
}