SQL Operations Studio Public Preview 1 (0.23) release source code

src/vs/code/electron-main/window.ts

@@ -0,0 +1,868 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+'use strict';
+
+import * as path from 'path';
+import * as objects from 'vs/base/common/objects';
+import { stopProfiling } from 'vs/base/node/profiler';
+import nls = require('vs/nls');
+import URI from 'vs/base/common/uri';
+import { IStorageService } from 'vs/platform/storage/node/storage';
+import { shell, screen, BrowserWindow, systemPreferences, app } from 'electron';
+import { TPromise, TValueCallback } from 'vs/base/common/winjs.base';
+import { IEnvironmentService, ParsedArgs } from 'vs/platform/environment/common/environment';
+import { ILogService } from 'vs/platform/log/common/log';
+import { IConfigurationService } from 'vs/platform/configuration/common/configuration';
+import { parseArgs } from 'vs/platform/environment/node/argv';
+import product from 'vs/platform/node/product';
+import pkg from 'vs/platform/node/package';
+import { IWindowSettings, MenuBarVisibility, IWindowConfiguration, ReadyState } from 'vs/platform/windows/common/windows';
+import { IDisposable, dispose } from 'vs/base/common/lifecycle';
+import { KeyboardLayoutMonitor } from 'vs/code/electron-main/keyboard';
+import { isLinux, isMacintosh, isWindows } from 'vs/base/common/platform';
+import { ICodeWindow } from 'vs/platform/windows/electron-main/windows';
+import { IWorkspaceIdentifier, IWorkspacesMainService } from 'vs/platform/workspaces/common/workspaces';
+import { IBackupMainService } from 'vs/platform/backup/common/backup';
+
+export interface IWindowState {
+	width?: number;
+	height?: number;
+	x?: number;
+	y?: number;
+	mode?: WindowMode;
+	display?: number;
+}
+
+export interface IWindowCreationOptions {
+	state: IWindowState;
+	extensionDevelopmentPath?: string;
+	isExtensionTestHost?: boolean;
+}
+
+export enum WindowMode {
+	Maximized,
+	Normal,
+	Minimized, // not used anymore, but also cannot remove due to existing stored UI state (needs migration)
+	Fullscreen
+}
+
+export const defaultWindowState = function (mode = WindowMode.Normal): IWindowState {
+	return {
+		width: 1024,
+		height: 768,
+		mode
+	};
+};
+
+interface IWorkbenchEditorConfiguration {
+	workbench: {
+		editor: {
+			swipeToNavigate: boolean
+		}
+	};
+}
+
+export class CodeWindow implements ICodeWindow {
+
+	public static themeStorageKey = 'theme';
+	public static themeBackgroundStorageKey = 'themeBackground';
+
+	private static MIN_WIDTH = 200;
+	private static MIN_HEIGHT = 120;
+
+	private hiddenTitleBarStyle: boolean;
+	private showTimeoutHandle: any;
+	private _id: number;
+	private _win: Electron.BrowserWindow;
+	private _lastFocusTime: number;
+	private _readyState: ReadyState;
+	private windowState: IWindowState;
+	private currentMenuBarVisibility: MenuBarVisibility;
+	private toDispose: IDisposable[];
+	private representedFilename: string;
+
+	private whenReadyCallbacks: TValueCallback<CodeWindow>[];
+
+	private currentConfig: IWindowConfiguration;
+	private pendingLoadConfig: IWindowConfiguration;
+
+	constructor(
+		config: IWindowCreationOptions,
+		@ILogService private logService: ILogService,
+		@IEnvironmentService private environmentService: IEnvironmentService,
+		@IConfigurationService private configurationService: IConfigurationService,
+		@IStorageService private storageService: IStorageService,
+		@IWorkspacesMainService private workspaceService: IWorkspacesMainService,
+		@IBackupMainService private backupService: IBackupMainService
+	) {
+		this._lastFocusTime = -1;
+		this._readyState = ReadyState.NONE;
+		this.whenReadyCallbacks = [];
+		this.toDispose = [];
+
+		// create browser window
+		this.createBrowserWindow(config);
+
+		// respect configured menu bar visibility
+		this.onConfigurationUpdated();
+
+		// Eventing
+		this.registerListeners();
+	}
+
+	private createBrowserWindow(config: IWindowCreationOptions): void {
+
+		// Load window state
+		this.windowState = this.restoreWindowState(config.state);
+
+		// in case we are maximized or fullscreen, only show later after the call to maximize/fullscreen (see below)
+		const isFullscreenOrMaximized = (this.windowState.mode === WindowMode.Maximized || this.windowState.mode === WindowMode.Fullscreen);
+
+		const options: Electron.BrowserWindowOptions = {
+			width: this.windowState.width,
+			height: this.windowState.height,
+			x: this.windowState.x,
+			y: this.windowState.y,
+			backgroundColor: this.getBackgroundColor(),
+			minWidth: CodeWindow.MIN_WIDTH,
+			minHeight: CodeWindow.MIN_HEIGHT,
+			show: !isFullscreenOrMaximized,
+			title: product.nameLong,
+			webPreferences: {
+				'backgroundThrottling': false, // by default if Code is in the background, intervals and timeouts get throttled,
+				disableBlinkFeatures: 'Auxclick' // disable auxclick events (see https://developers.google.com/web/updates/2016/10/auxclick)
+			}
+		};
+
+		if (isLinux) {
+			options.icon = path.join(this.environmentService.appRoot, 'resources/linux/code.png'); // Windows and Mac are better off using the embedded icon(s)
+		}
+
+		const windowConfig = this.configurationService.getConfiguration<IWindowSettings>('window');
+
+		let useNativeTabs = false;
+		if (windowConfig && windowConfig.nativeTabs) {
+			options.tabbingIdentifier = product.nameShort; // this opts in to sierra tabs
+			useNativeTabs = true;
+		}
+
+		let useCustomTitleStyle = false;
+
+		// {{SQL CARBON EDIT}}
+		// turn-off custom menus to avoid bug calculating size of SQL editor
+		/*
+		if (isMacintosh && (!windowConfig || !windowConfig.titleBarStyle || windowConfig.titleBarStyle === 'custom')) {
+			const isDev = !this.environmentService.isBuilt || !!config.extensionDevelopmentPath;
+			if (!isDev) {
+				useCustomTitleStyle = true; // not enabled when developing due to https://github.com/electron/electron/issues/3647
+			}
+		}
+		*/
+
+		if (useNativeTabs) {
+			useCustomTitleStyle = false; // native tabs on sierra do not work with custom title style
+		}
+
+		if (useCustomTitleStyle) {
+			options.titleBarStyle = 'hidden';
+			this.hiddenTitleBarStyle = true;
+		}
+
+		// Create the browser window.
+		this._win = new BrowserWindow(options);
+		this._id = this._win.id;
+
+		if (useCustomTitleStyle) {
+			this._win.setSheetOffset(22); // offset dialogs by the height of the custom title bar if we have any
+		}
+
+		// Set relaunch command
+		if (isWindows && product.win32AppUserModelId && typeof this._win.setAppDetails === 'function') {
+			this._win.setAppDetails({
+				appId: product.win32AppUserModelId,
+				relaunchCommand: `"${process.execPath}" -n`,
+				relaunchDisplayName: product.nameLong
+			});
+		}
+
+		if (isFullscreenOrMaximized) {
+			this._win.maximize();
+
+			if (this.windowState.mode === WindowMode.Fullscreen) {
+				this._win.setFullScreen(true);
+			}
+
+			if (!this._win.isVisible()) {
+				this._win.show(); // to reduce flicker from the default window size to maximize, we only show after maximize
+			}
+		}
+
+		this._lastFocusTime = Date.now(); // since we show directly, we need to set the last focus time too
+	}
+
+	public hasHiddenTitleBarStyle(): boolean {
+		return this.hiddenTitleBarStyle;
+	}
+
+	public get isExtensionDevelopmentHost(): boolean {
+		return !!this.config.extensionDevelopmentPath;
+	}
+
+	public get isExtensionTestHost(): boolean {
+		return !!this.config.extensionTestsPath;
+	}
+
+	public get extensionDevelopmentPath(): string {
+		return this.config.extensionDevelopmentPath;
+	}
+
+	public get config(): IWindowConfiguration {
+		return this.currentConfig;
+	}
+
+	public get id(): number {
+		return this._id;
+	}
+
+	public get win(): Electron.BrowserWindow {
+		return this._win;
+	}
+
+	public setRepresentedFilename(filename: string): void {
+		if (isMacintosh) {
+			this.win.setRepresentedFilename(filename);
+		} else {
+			this.representedFilename = filename;
+		}
+	}
+
+	public getRepresentedFilename(): string {
+		if (isMacintosh) {
+			return this.win.getRepresentedFilename();
+		}
+
+		return this.representedFilename;
+	}
+
+	public focus(): void {
+		if (!this._win) {
+			return;
+		}
+
+		if (this._win.isMinimized()) {
+			this._win.restore();
+		}
+
+		this._win.focus();
+	}
+
+	public get lastFocusTime(): number {
+		return this._lastFocusTime;
+	}
+
+	public get backupPath(): string {
+		return this.currentConfig ? this.currentConfig.backupPath : void 0;
+	}
+
+	public get openedWorkspace(): IWorkspaceIdentifier {
+		return this.currentConfig ? this.currentConfig.workspace : void 0;
+	}
+
+	public get openedFolderPath(): string {
+		return this.currentConfig ? this.currentConfig.folderPath : void 0;
+	}
+
+	public get openedFilePath(): string {
+		return this.currentConfig && this.currentConfig.filesToOpen && this.currentConfig.filesToOpen[0] && this.currentConfig.filesToOpen[0].filePath;
+	}
+
+	public setReady(): void {
+		this._readyState = ReadyState.READY;
+
+		// inform all waiting promises that we are ready now
+		while (this.whenReadyCallbacks.length) {
+			this.whenReadyCallbacks.pop()(this);
+		}
+	}
+
+	public ready(): TPromise<CodeWindow> {
+		return new TPromise<CodeWindow>((c) => {
+			if (this._readyState === ReadyState.READY) {
+				return c(this);
+			}
+
+			// otherwise keep and call later when we are ready
+			this.whenReadyCallbacks.push(c);
+		});
+	}
+
+	public get readyState(): ReadyState {
+		return this._readyState;
+	}
+
+	private registerListeners(): void {
+		const urls = ['https://marketplace.visualstudio.com/*', 'https://*.vsassets.io/*'];
+		const headers = {
+			'X-Market-Client-Id': `VSCode ${pkg.version}`,
+			'User-Agent': `VSCode ${pkg.version}`,
+			'X-Market-User-Id': this.environmentService.machineUUID
+		};
+
+		this._win.webContents.session.webRequest.onBeforeSendHeaders({ urls }, (details, cb) => {
+			cb({ cancel: false, requestHeaders: objects.assign(details.requestHeaders, headers) });
+		});
+
+		// Prevent loading of svgs
+		this._win.webContents.session.webRequest.onBeforeRequest((details, callback) => {
+			if (details.url.indexOf('.svg') > 0) {
+				const uri = URI.parse(details.url);
+				if (uri && !uri.scheme.match(/file/i) && (uri.path as any).endsWith('.svg')) {
+					return callback({ cancel: true });
+				}
+			}
+
+			return callback({});
+		});
+
+		this._win.webContents.session.webRequest.onHeadersReceived((details, callback) => {
+			const contentType: string[] = (details.responseHeaders['content-type'] || details.responseHeaders['Content-Type']) as any;
+			if (contentType && Array.isArray(contentType) && contentType.some(x => x.toLowerCase().indexOf('image/svg') >= 0)) {
+				return callback({ cancel: true });
+			}
+
+			return callback({ cancel: false, responseHeaders: details.responseHeaders });
+		});
+
+		// Remember that we loaded
+		this._win.webContents.on('did-finish-load', () => {
+			this._readyState = ReadyState.LOADING;
+
+			// Associate properties from the load request if provided
+			if (this.pendingLoadConfig) {
+				this.currentConfig = this.pendingLoadConfig;
+
+				this.pendingLoadConfig = null;
+			}
+
+			// To prevent flashing, we set the window visible after the page has finished to load but before Code is loaded
+			if (!this._win.isVisible()) {
+				if (this.windowState.mode === WindowMode.Maximized) {
+					this._win.maximize();
+				}
+
+				if (!this._win.isVisible()) { // maximize also makes visible
+					this._win.show();
+				}
+			}
+		});
+
+		// App commands support
+		this.registerNavigationListenerOn('app-command', 'browser-backward', 'browser-forward', false);
+
+		// Handle code that wants to open links
+		this._win.webContents.on('new-window', (event: Event, url: string) => {
+			event.preventDefault();
+
+			shell.openExternal(url);
+		});
+
+		// Window Focus
+		this._win.on('focus', () => {
+			this._lastFocusTime = Date.now();
+		});
+
+		// Window Fullscreen
+		this._win.on('enter-full-screen', () => {
+			this.sendWhenReady('vscode:enterFullScreen');
+		});
+
+		this._win.on('leave-full-screen', () => {
+			this.sendWhenReady('vscode:leaveFullScreen');
+		});
+
+		// Window Failed to load
+		this._win.webContents.on('did-fail-load', (event: Event, errorCode: string, errorDescription: string) => {
+			this.logService.warn('[electron event]: fail to load, ', errorDescription);
+		});
+
+		// Prevent any kind of navigation triggered by the user!
+		// But do not touch this in dev version because it will prevent "Reload" from dev tools
+		if (this.environmentService.isBuilt) {
+			this._win.webContents.on('will-navigate', (event: Event) => {
+				if (event) {
+					event.preventDefault();
+				}
+			});
+		}
+
+		// Handle configuration changes
+		this.toDispose.push(this.configurationService.onDidUpdateConfiguration(e => this.onConfigurationUpdated()));
+
+		// Handle Workspace events
+		this.toDispose.push(this.workspaceService.onUntitledWorkspaceDeleted(e => this.onUntitledWorkspaceDeleted(e)));
+	}
+
+	private onUntitledWorkspaceDeleted(workspace: IWorkspaceIdentifier): void {
+
+		// Make sure to update our workspace config if we detect that it
+		// was deleted
+		if (this.openedWorkspace && this.openedWorkspace.id === workspace.id) {
+			this.currentConfig.workspace = void 0;
+		}
+	}
+
+	private onConfigurationUpdated(): void {
+		const newMenuBarVisibility = this.getMenuBarVisibility();
+		if (newMenuBarVisibility !== this.currentMenuBarVisibility) {
+			this.currentMenuBarVisibility = newMenuBarVisibility;
+			this.setMenuBarVisibility(newMenuBarVisibility);
+		}
+
+		// Swipe command support (macOS)
+		if (isMacintosh) {
+			const config = this.configurationService.getConfiguration<IWorkbenchEditorConfiguration>();
+			if (config && config.workbench && config.workbench.editor && config.workbench.editor.swipeToNavigate) {
+				this.registerNavigationListenerOn('swipe', 'left', 'right', true);
+			} else {
+				this._win.removeAllListeners('swipe');
+			}
+		}
+	};
+
+	private registerNavigationListenerOn(command: 'swipe' | 'app-command', back: 'left' | 'browser-backward', forward: 'right' | 'browser-forward', acrossEditors: boolean) {
+		this._win.on(command, (e, cmd) => {
+			if (this.readyState !== ReadyState.READY) {
+				return; // window must be ready
+			}
+
+			if (cmd === back) {
+				this.send('vscode:runAction', acrossEditors ? 'workbench.action.openPreviousRecentlyUsedEditor' : 'workbench.action.navigateBack');
+			} else if (cmd === forward) {
+				this.send('vscode:runAction', acrossEditors ? 'workbench.action.openNextRecentlyUsedEditor' : 'workbench.action.navigateForward');
+			}
+		});
+	}
+
+	public load(config: IWindowConfiguration, isReload?: boolean): void {
+
+		// If this is the first time the window is loaded, we associate the paths
+		// directly with the window because we assume the loading will just work
+		if (this.readyState === ReadyState.NONE) {
+			this.currentConfig = config;
+		}
+
+		// Otherwise, the window is currently showing a folder and if there is an
+		// unload handler preventing the load, we cannot just associate the paths
+		// because the loading might be vetoed. Instead we associate it later when
+		// the window load event has fired.
+		else {
+			this.pendingLoadConfig = config;
+			this._readyState = ReadyState.NAVIGATING;
+		}
+
+		// Clear Document Edited if needed
+		if (isMacintosh && this._win.isDocumentEdited()) {
+			if (!isReload || !this.backupService.isHotExitEnabled()) {
+				this._win.setDocumentEdited(false);
+			}
+		}
+
+		// Clear Title and Filename if needed
+		if (!isReload) {
+			if (this.getRepresentedFilename()) {
+				this.setRepresentedFilename('');
+			}
+
+			this._win.setTitle(product.nameLong);
+		}
+
+		// Load URL
+		this._win.loadURL(this.getUrl(config));
+
+		// Make window visible if it did not open in N seconds because this indicates an error
+		// Only do this when running out of sources and not when running tests
+		if (!this.environmentService.isBuilt && !this.environmentService.extensionTestsPath) {
+			this.showTimeoutHandle = setTimeout(() => {
+				if (this._win && !this._win.isVisible() && !this._win.isMinimized()) {
+					this._win.show();
+					this._win.focus();
+					this._win.webContents.openDevTools();
+				}
+			}, 10000);
+		}
+
+		// (--prof-startup) save profile to disk
+		const { profileStartup } = this.environmentService;
+		if (profileStartup) {
+			stopProfiling(profileStartup.dir, profileStartup.prefix).done(undefined, err => this.logService.error(err));
+		}
+	}
+
+	public reload(configuration?: IWindowConfiguration, cli?: ParsedArgs): void {
+
+		// If config is not provided, copy our current one
+		if (!configuration) {
+			configuration = objects.mixin({}, this.currentConfig);
+		}
+
+		// Delete some properties we do not want during reload
+		delete configuration.filesToOpen;
+		delete configuration.filesToCreate;
+		delete configuration.filesToDiff;
+
+		// Some configuration things get inherited if the window is being reloaded and we are
+		// in extension development mode. These options are all development related.
+		if (this.isExtensionDevelopmentHost && cli) {
+			configuration.verbose = cli.verbose;
+			configuration.debugPluginHost = cli.debugPluginHost;
+			configuration.debugBrkPluginHost = cli.debugBrkPluginHost;
+			configuration.debugId = cli.debugId;
+			configuration['extensions-dir'] = cli['extensions-dir'];
+		}
+
+		configuration.isInitialStartup = false; // since this is a reload
+
+		// Load config
+		this.load(configuration, true);
+	}
+
+	private getUrl(windowConfiguration: IWindowConfiguration): string {
+
+		// Set zoomlevel
+		const windowConfig = this.configurationService.getConfiguration<IWindowSettings>('window');
+		const zoomLevel = windowConfig && windowConfig.zoomLevel;
+		if (typeof zoomLevel === 'number') {
+			windowConfiguration.zoomLevel = zoomLevel;
+		}
+
+		// Set fullscreen state
+		windowConfiguration.fullscreen = this._win.isFullScreen();
+
+		// Set Accessibility Config
+		windowConfiguration.highContrast = isWindows && systemPreferences.isInvertedColorScheme() && (!windowConfig || windowConfig.autoDetectHighContrast);
+		windowConfiguration.accessibilitySupport = app.isAccessibilitySupportEnabled();
+
+		// Set Keyboard Config
+		windowConfiguration.isISOKeyboard = KeyboardLayoutMonitor.INSTANCE.isISOKeyboard();
+
+		// Theme
+		windowConfiguration.baseTheme = this.getBaseTheme();
+		windowConfiguration.backgroundColor = this.getBackgroundColor();
+
+		// Perf Counters
+		windowConfiguration.perfStartTime = global.perfStartTime;
+		windowConfiguration.perfAppReady = global.perfAppReady;
+		windowConfiguration.perfWindowLoadTime = Date.now();
+
+		// Config (combination of process.argv and window configuration)
+		const environment = parseArgs(process.argv);
+		const config = objects.assign(environment, windowConfiguration);
+		for (let key in config) {
+			if (!config[key]) {
+				delete config[key]; // only send over properties that have a true value
+			}
+		}
+
+		return `${require.toUrl('vs/workbench/electron-browser/bootstrap/index.html')}?config=${encodeURIComponent(JSON.stringify(config))}`;
+	}
+
+	private getBaseTheme(): string {
+		if (isWindows && systemPreferences.isInvertedColorScheme()) {
+			return 'hc-black';
+		}
+
+		const theme = this.storageService.getItem<string>(CodeWindow.themeStorageKey, 'vs-dark');
+
+		return theme.split(' ')[0];
+	}
+
+	private getBackgroundColor(): string {
+		if (isWindows && systemPreferences.isInvertedColorScheme()) {
+			return '#000000';
+		}
+
+		const background = this.storageService.getItem<string>(CodeWindow.themeBackgroundStorageKey, null);
+		if (!background) {
+			const baseTheme = this.getBaseTheme();
+
+			return baseTheme === 'hc-black' ? '#000000' : (baseTheme === 'vs' ? '#FFFFFF' : (isMacintosh ? '#171717' : '#1E1E1E')); // https://github.com/electron/electron/issues/5150
+		}
+
+		return background;
+	}
+
+	public serializeWindowState(): IWindowState {
+
+		// fullscreen gets special treatment
+		if (this._win.isFullScreen()) {
+			const display = screen.getDisplayMatching(this.getBounds());
+
+			return {
+				mode: WindowMode.Fullscreen,
+				display: display ? display.id : void 0,
+
+				// still carry over window dimensions from previous sessions!
+				width: this.windowState.width,
+				height: this.windowState.height,
+				x: this.windowState.x,
+				y: this.windowState.y
+			};
+		}
+
+		const state: IWindowState = Object.create(null);
+		let mode: WindowMode;
+
+		// get window mode
+		if (!isMacintosh && this._win.isMaximized()) {
+			mode = WindowMode.Maximized;
+		} else {
+			mode = WindowMode.Normal;
+		}
+
+		// we don't want to save minimized state, only maximized or normal
+		if (mode === WindowMode.Maximized) {
+			state.mode = WindowMode.Maximized;
+		} else {
+			state.mode = WindowMode.Normal;
+		}
+
+		// only consider non-minimized window states
+		if (mode === WindowMode.Normal || mode === WindowMode.Maximized) {
+			const bounds = this.getBounds();
+
+			state.x = bounds.x;
+			state.y = bounds.y;
+			state.width = bounds.width;
+			state.height = bounds.height;
+		}
+
+		return state;
+	}
+
+	private restoreWindowState(state?: IWindowState): IWindowState {
+		if (state) {
+			try {
+				state = this.validateWindowState(state);
+			} catch (err) {
+				this.logService.log(`Unexpected error validating window state: ${err}\n${err.stack}`); // somehow display API can be picky about the state to validate
+			}
+		}
+
+		if (!state) {
+			state = defaultWindowState();
+		}
+
+		return state;
+	}
+
+	private validateWindowState(state: IWindowState): IWindowState {
+		if (!state) {
+			return null;
+		}
+
+		if ([state.x, state.y, state.width, state.height].some(n => typeof n !== 'number')) {
+			return null;
+		}
+
+		if (state.width <= 0 || state.height <= 0) {
+			return null;
+		}
+
+		const displays = screen.getAllDisplays();
+
+		// Single Monitor: be strict about x/y positioning
+		if (displays.length === 1) {
+			const displayBounds = displays[0].bounds;
+
+			// Careful with maximized: in that mode x/y can well be negative!
+			if (state.mode !== WindowMode.Maximized && displayBounds.width > 0 && displayBounds.height > 0 /* Linux X11 sessions sometimes report wrong display bounds */) {
+				if (state.x < displayBounds.x) {
+					state.x = displayBounds.x; // prevent window from falling out of the screen to the left
+				}
+
+				if (state.y < displayBounds.y) {
+					state.y = displayBounds.y; // prevent window from falling out of the screen to the top
+				}
+
+				if (state.x > (displayBounds.x + displayBounds.width)) {
+					state.x = displayBounds.x; // prevent window from falling out of the screen to the right
+				}
+
+				if (state.y > (displayBounds.y + displayBounds.height)) {
+					state.y = displayBounds.y; // prevent window from falling out of the screen to the bottom
+				}
+
+				if (state.width > displayBounds.width) {
+					state.width = displayBounds.width; // prevent window from exceeding display bounds width
+				}
+
+				if (state.height > displayBounds.height) {
+					state.height = displayBounds.height; // prevent window from exceeding display bounds height
+				}
+			}
+
+			if (state.mode === WindowMode.Maximized) {
+				return defaultWindowState(WindowMode.Maximized); // when maximized, make sure we have good values when the user restores the window
+			}
+
+			return state;
+		}
+
+		// Multi Montior (fullscreen): try to find the previously used display
+		if (state.display && state.mode === WindowMode.Fullscreen) {
+			const display = displays.filter(d => d.id === state.display)[0];
+			if (display && display.bounds && typeof display.bounds.x === 'number' && typeof display.bounds.y === 'number') {
+				const defaults = defaultWindowState(WindowMode.Fullscreen); // make sure we have good values when the user restores the window
+				defaults.x = display.bounds.x; // carefull to use displays x/y position so that the window ends up on the correct monitor
+				defaults.y = display.bounds.y;
+
+				return defaults;
+			}
+		}
+
+		// Multi Monitor (non-fullscreen): be less strict because metrics can be crazy
+		const bounds = { x: state.x, y: state.y, width: state.width, height: state.height };
+		const display = screen.getDisplayMatching(bounds);
+		if (display && display.bounds.x + display.bounds.width > bounds.x && display.bounds.y + display.bounds.height > bounds.y) {
+			if (state.mode === WindowMode.Maximized) {
+				const defaults = defaultWindowState(WindowMode.Maximized); // when maximized, make sure we have good values when the user restores the window
+				defaults.x = state.x; // carefull to keep x/y position so that the window ends up on the correct monitor
+				defaults.y = state.y;
+
+				return defaults;
+			}
+
+			return state;
+		}
+
+		return null;
+	}
+
+	public getBounds(): Electron.Rectangle {
+		const pos = this._win.getPosition();
+		const dimension = this._win.getSize();
+
+		return { x: pos[0], y: pos[1], width: dimension[0], height: dimension[1] };
+	}
+
+	public toggleFullScreen(): void {
+		const willBeFullScreen = !this._win.isFullScreen();
+
+		// set fullscreen flag on window
+		this._win.setFullScreen(willBeFullScreen);
+
+		// respect configured menu bar visibility or default to toggle if not set
+		this.setMenuBarVisibility(this.currentMenuBarVisibility, false);
+	}
+
+	private getMenuBarVisibility(): MenuBarVisibility {
+		const windowConfig = this.configurationService.getConfiguration<IWindowSettings>('window');
+		if (!windowConfig || !windowConfig.menuBarVisibility) {
+			return 'default';
+		}
+
+		let menuBarVisibility = windowConfig.menuBarVisibility;
+		if (['visible', 'toggle', 'hidden'].indexOf(menuBarVisibility) < 0) {
+			menuBarVisibility = 'default';
+		}
+
+		return menuBarVisibility;
+	}
+
+	public setMenuBarVisibility(visibility: MenuBarVisibility, notify: boolean = true): void {
+		if (isMacintosh) {
+			return; // ignore for macOS platform
+		}
+
+		const isFullscreen = this._win.isFullScreen();
+
+		switch (visibility) {
+			case ('default'):
+				this._win.setMenuBarVisibility(!isFullscreen);
+				this._win.setAutoHideMenuBar(isFullscreen);
+				break;
+
+			case ('visible'):
+				this._win.setMenuBarVisibility(true);
+				this._win.setAutoHideMenuBar(false);
+				break;
+
+			case ('toggle'):
+				this._win.setMenuBarVisibility(false);
+				this._win.setAutoHideMenuBar(true);
+
+				if (notify) {
+					this.send('vscode:showInfoMessage', nls.localize('hiddenMenuBar', "You can still access the menu bar by pressing the **Alt** key."));
+				};
+				break;
+
+			case ('hidden'):
+				// for some weird reason that I have no explanation for, the menu bar is not hiding when calling
+				// this without timeout (see https://github.com/Microsoft/vscode/issues/19777). there seems to be
+				// a timing issue with us opening the first window and the menu bar getting created. somehow the
+				// fact that we want to hide the menu without being able to bring it back via Alt key makes Electron
+				// still show the menu. Unable to reproduce from a simple Hello World application though...
+				setTimeout(() => {
+					this._win.setMenuBarVisibility(false);
+					this._win.setAutoHideMenuBar(false);
+				});
+				break;
+		};
+	}
+
+	public onWindowTitleDoubleClick(): void {
+
+		// Respect system settings on mac with regards to title click on windows title
+		if (isMacintosh) {
+			const action = systemPreferences.getUserDefault('AppleActionOnDoubleClick', 'string');
+			switch (action) {
+				case 'Minimize':
+					this.win.minimize();
+					break;
+				case 'None':
+					break;
+				case 'Maximize':
+				default:
+					this.win.maximize();
+			}
+		}
+
+		// Linux/Windows: just toggle maximize/minimized state
+		else {
+			if (this.win.isMaximized()) {
+				this.win.unmaximize();
+			} else {
+				this.win.maximize();
+			}
+		}
+	}
+
+	public close(): void {
+		if (this._win) {
+			this._win.close();
+		}
+	}
+
+	public sendWhenReady(channel: string, ...args: any[]): void {
+		this.ready().then(() => {
+			this.send(channel, ...args);
+		});
+	}
+
+	public send(channel: string, ...args: any[]): void {
+		this._win.webContents.send(channel, ...args);
+	}
+
+	public dispose(): void {
+		if (this.showTimeoutHandle) {
+			clearTimeout(this.showTimeoutHandle);
+		}
+
+		this.toDispose = dispose(this.toDispose);
+
+		this._win = null; // Important to dereference the window object to allow for GC
+	}
+}