Fix various issues when the terminal was not open on launch

Fixes #11969

src/vs/workbench/parts/terminal/electron-browser/media/terminal.css

@@ -22,6 +22,7 @@
 	display: flex;
 	padding: 0 20px;
 	flex-grow: 1;
+	width: 100%;
 }
 
 .monaco-workbench .panel.integrated-terminal .terminal-wrapper {

src/vs/workbench/parts/terminal/electron-browser/terminalInstance.ts

@@ -38,6 +38,7 @@ export class TerminalInstance implements ITerminalInstance {
 	public get onTitleChanged(): Event<string> { return this._onTitleChanged.event; }
 
 	private isExiting: boolean = false;
+	private isVisible: boolean = false;
 	private toDispose: lifecycle.IDisposable[] = [];
 	private skipTerminalKeybindings: Keybinding[] = [];
 	private process: cp.ChildProcess;
@@ -74,6 +75,7 @@ export class TerminalInstance implements ITerminalInstance {
 			throw new Error('The terminal instance has already been attached to a container');
 		}
 
+		this.container = container;
 		this.wrapperElement = document.createElement('div');
 		DOM.addClass(this.wrapperElement, 'terminal-wrapper');
 		this.xtermElement = document.createElement('div');
@@ -139,6 +141,7 @@ export class TerminalInstance implements ITerminalInstance {
 		this.container.appendChild(this.wrapperElement);
 
 		this.layout(new Dimension(this.container.offsetWidth, this.container.offsetHeight));
+		this.setVisible(this.isVisible);
 	}
 
 	public copySelection(): void {
@@ -195,8 +198,11 @@ export class TerminalInstance implements ITerminalInstance {
 	}
 
 	public setVisible(visible: boolean): void {
+		this.isVisible = visible;
+		if (this.wrapperElement) {
 			DOM.toggleClass(this.wrapperElement, 'active', visible);
 		}
+	}
 
 	public scrollDown(): void {
 		this.xterm.scrollDisp(1);

src/vs/workbench/parts/terminal/electron-browser/terminalPanel.ts

@@ -72,6 +72,8 @@ export class TerminalPanel extends Panel {
 		this.updateTheme();
 		this.updateConfig();
 
+		// Force another layout (first is setContainers) since config has changed
+		this.layout(new Dimension(this.terminalContainer.offsetWidth, this.terminalContainer.offsetHeight));
 		return TPromise.as(void 0);
 	}
 

src/vs/workbench/parts/terminal/electron-browser/terminalService.ts

@@ -143,11 +143,11 @@ export class TerminalService implements ITerminalService {
 	}
 
 	public setContainers(panelContainer: Builder, terminalContainer: HTMLElement): void {
+		this._configHelper.panelContainer = panelContainer;
 		this.terminalContainer = terminalContainer;
 		this._terminalInstances.forEach(terminalInstance => {
 			terminalInstance.attachToElement(this.terminalContainer);
 		});
-		this._configHelper.panelContainer = panelContainer;
 	}
 
 	public showPanel(focus?: boolean): TPromise<void> {
@@ -155,7 +155,6 @@ export class TerminalService implements ITerminalService {
 			let panel = this.panelService.getActivePanel();
 			if (!panel || panel.getId() !== TERMINAL_PANEL_ID) {
 				return this.panelService.openPanel(TERMINAL_PANEL_ID, focus).then(() => {
-					panel = this.panelService.getActivePanel();
 					if (focus) {
 						this.getActiveInstance().focus(true);
 					}