Sample for quick pick hide API.

Signed-off-by: Akos Kitta <kittaakos@typefox.io>

quick-pick-hide/.gitignore

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+out
+node_modules
+*.vsix

quick-pick-hide/.theia/settings.json

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+{
+   "typescript.tsdk": "node_modules/typescript/lib"
+}

quick-pick-hide/.vscodeignore

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+.vscode/**
+out/**/*.map
+src/**
+.gitignore
+tsconfig.json
+tslint.json

quick-pick-hide/package.json

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+{
+	"name": "quick-pick-hide",
+	"displayName": "Complete Quick Pick API",
+	"description": "See: https://github.com/theia-ide/theia/pull/5766",
+	"version": "0.0.1",
+	"publisher": "vscode-samples",
+	"engines": {
+		"vscode": "^1.32.0"
+	},
+	"categories": [
+		"Other"
+	],
+	"activationEvents": [
+		"*"
+	],
+	"main": "./out/extension.js",
+	"contributes": {
+		"commands": [
+			{
+				"command": "quick.pick.hide.api",
+				"title": "Sample: complete QuickPick hide API"
+			}
+		]
+	},
+	"scripts": {
+		"vscode:prepublish": "npm run compile",
+		"compile": "tsc -p ./",
+		"lint": "tslint -p ./",
+		"watch": "tsc -watch -p ./"
+	},
+	"devDependencies": {
+		"@types/node": "10.3.6",
+		"tslint": "^5.16.0",
+		"typescript": "^3.5.1",
+		"@types/vscode": "^1.32.0"
+	}
+}

quick-pick-hide/src/extension.ts

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+import * as vscode from 'vscode';
+
+export function activate(context: vscode.ExtensionContext) {
+	const disposable = vscode.commands.registerCommand('quick.pick.hide.api', () => {
+		const quickOpen = vscode.window.createQuickPick();
+
+		quickOpen.items = [
+			{ label: 'A' }, { label: 'B' }
+		];
+
+		quickOpen.show();
+
+		setTimeout(() => {
+			quickOpen.hide();
+		}, 2000);
+	});
+
+	context.subscriptions.push(disposable);
+}