58 lines
2.0 KiB
TypeScript
58 lines
2.0 KiB
TypeScript
/**
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* CoeditingRegistry — the INV-10 activation gate (spec §6.4). Holds the set of
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* documents the writer has explicitly entered into coediting; every surface
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* (SCM/QuickDiff, comments, preview annotations, edit commands, decorations)
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* checks membership before attaching. Persisted in workspaceState so a reload
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* restores the set (the durable sidecar carries the artifacts; this carries
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* only the mode).
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*/
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import * as vscode from "vscode";
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const STATE_KEY = "cowriting.coeditingSet";
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export class CoeditingRegistry implements vscode.Disposable {
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private readonly set: Set<string>;
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private readonly emitter = new vscode.EventEmitter<{ uri: string; coediting: boolean }>();
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readonly onDidChange = this.emitter.event;
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/** Set by the SCM surface (Task 3) so syncContext can expose the baseline mode. */
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baselineModeOf: ((uri: vscode.Uri) => "head" | "snapshot" | undefined) | undefined;
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constructor(private readonly state: vscode.Memento) {
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this.set = new Set(state.get<string[]>(STATE_KEY, []));
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}
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enter(uri: vscode.Uri): void {
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const key = uri.toString();
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if (this.set.has(key)) return;
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this.set.add(key);
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void this.state.update(STATE_KEY, [...this.set]);
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this.emitter.fire({ uri: key, coediting: true });
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}
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exit(uri: vscode.Uri): void {
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const key = uri.toString();
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if (!this.set.delete(key)) return;
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void this.state.update(STATE_KEY, [...this.set]);
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this.emitter.fire({ uri: key, coediting: false });
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}
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isCoediting(uri: vscode.Uri): boolean {
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return this.set.has(uri.toString());
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}
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list(): string[] {
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return [...this.set];
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}
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syncContext(editor: vscode.TextEditor | undefined): void {
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const coediting = !!editor && this.isCoediting(editor.document.uri);
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void vscode.commands.executeCommand("setContext", "cowriting.isCoediting", coediting);
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const mode = coediting && editor ? this.baselineModeOf?.(editor.document.uri) : undefined;
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void vscode.commands.executeCommand("setContext", "cowriting.baselineMode", mode ?? "");
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}
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dispose(): void {
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this.emitter.dispose();
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}
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}
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