From 8e9224b1cf76066ce88b32659adcd410f69ea9ec Mon Sep 17 00:00:00 2001
From: Christof Marti <chrmarti@microsoft.com>
Date: Fri, 22 Jun 2018 11:40:08 +0200
Subject: [PATCH] QuickOpen sample

---
 quickinput-sample/src/extension.ts |  2 +
 quickinput-sample/src/quickOpen.ts | 85 ++++++++++++++++++++++++++++++
 2 files changed, 87 insertions(+)
 create mode 100644 quickinput-sample/src/quickOpen.ts

diff --git a/quickinput-sample/src/extension.ts b/quickinput-sample/src/extension.ts
index f5224dfb..9ba76752 100644
--- a/quickinput-sample/src/extension.ts
+++ b/quickinput-sample/src/extension.ts
@@ -9,6 +9,7 @@ import { window, commands, ExtensionContext } from 'vscode';
 import { showInputBox } from './basicInput';
 import { createQuickPick } from './generalInput';
 import { multiStepInput } from './multiStepInput';
+import { quickOpen } from './quickOpen';
 
 export function activate(context: ExtensionContext) {
 	context.subscriptions.push(commands.registerCommand('samples.quickInput', async () => {
@@ -16,6 +17,7 @@ export function activate(context: ExtensionContext) {
 			showInputBox,
 			createQuickPick,
 			multiStepInput,
+			quickOpen,
 		};
 		const quickPick = window.createQuickPick();
 		quickPick.items = Object.keys(options).map(label => ({ label }));
diff --git a/quickinput-sample/src/quickOpen.ts b/quickinput-sample/src/quickOpen.ts
new file mode 100644
index 00000000..d40d639c
--- /dev/null
+++ b/quickinput-sample/src/quickOpen.ts
@@ -0,0 +1,85 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as path from 'path';
+import * as cp from 'child_process';
+import { Uri, window, Disposable } from 'vscode';
+import { QuickPickItem } from 'vscode';
+import { workspace } from 'vscode';
+
+export async function quickOpen() {
+	const uri = await pickFile();
+	if (uri) {
+		const document = await workspace.openTextDocument(uri);
+		await window.showTextDocument(document);
+	}
+}
+
+class FileItem implements QuickPickItem {
+
+	label: string;
+	description: string;
+	
+	constructor(public base: Uri, public uri: Uri) {
+		this.label = path.basename(uri.fsPath);
+		this.description = path.dirname(path.relative(base.fsPath, uri.fsPath));
+	}
+}
+
+async function pickFile() {
+	const disposables: Disposable[] = [];
+	try {
+		return await new Promise<Uri | undefined>((resolve, reject) => {
+			const input = window.createQuickPick<FileItem>();
+			input.placeholder = 'Type to search for files';
+			let rgs: cp.ChildProcess[] = [];
+			disposables.push(
+				input.onDidChangeValue(value => {
+					rgs.forEach(rg => rg.kill());
+					if (!value) {
+						input.items = [];
+						return;
+					}
+					input.busy = true;
+					const cwds = workspace.workspaceFolders ? workspace.workspaceFolders.map(f => f.uri.fsPath) : [process.cwd()];
+					rgs = cwds.map(cwd => {
+						const rg = cp.exec(`rg --files -g '*${value}*'`, { cwd }, (err, stdout) => {
+							const i = rgs.indexOf(rg);
+							if (i !== -1) {
+								if (rgs.length === cwds.length) {
+									input.items = [];
+								}
+								if (!err) {
+									input.items = input.items.concat(
+										stdout
+											.split('\n').slice(0, 50)
+											.map(relative => new FileItem(Uri.file(cwd), Uri.file(path.join(cwd, relative))))
+									);
+								}
+								rgs.splice(i, 1);
+								if (!rgs.length) {
+									input.busy = false;
+								}
+							}
+						});
+						return rg;
+					});
+				}),
+				input.onDidChangeSelection(items => {
+					resolve(items[0].uri);
+					input.hide();
+				}),
+				input.onDidHide(() => {
+					rgs.forEach(rg => rg.kill());
+					resolve(undefined);
+					input.dispose();
+				})
+			);
+			input.show();
+		});
+	} finally {
+		disposables.forEach(d => d.dispose());
+	}
+}