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