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'use strict';
import { Functions } from './system';
import { commands, Disposable, TextEditor, window } from 'vscode';
import { BuiltInCommands } from './constants';
export class ActiveEditorTracker extends Disposable {
private _disposable: Disposable;
private _resolver: ((editor: TextEditor | undefined) => void) | undefined;
constructor() {
super(() => this.dispose());
const fn = Functions.debounce((e: TextEditor | undefined) => this._resolver && this._resolver(e), 50);
this._disposable = window.onDidChangeActiveTextEditor(fn);
}
dispose() {
this._disposable && this._disposable.dispose();
}
async awaitClose(timeout: number = 500): Promise<TextEditor | undefined> {
this.close();
return this.wait(timeout);
}
async awaitNext(timeout: number = 500): Promise<TextEditor | undefined> {
this.next();
return this.wait(timeout);
}
async close(): Promise<{} | undefined> {
return commands.executeCommand(BuiltInCommands.CloseActiveEditor);
}
async next(): Promise<{} | undefined> {
return commands.executeCommand(BuiltInCommands.NextEditor);
}
async wait(timeout: number = 500): Promise<TextEditor | undefined> {
const editor = await new Promise<TextEditor>((resolve, reject) => {
let timer: any;
this._resolver = (editor: TextEditor | undefined) => {
if (timer) {
clearTimeout(timer as any);
timer = 0;
resolve(editor);
}
};
timer = setTimeout(() => {
resolve(window.activeTextEditor);
timer = 0;
}, timeout) as any;
});
this._resolver = undefined;
return editor;
}
}