Start of move to terminal view command

Part of #126248

src/vs/workbench/contrib/terminal/browser/terminal.ts

@@ -182,6 +182,7 @@ export interface ITerminalService {
 	moveGroup(source: ITerminalInstance, target: ITerminalInstance): void;
 	moveInstance(source: ITerminalInstance, target: ITerminalInstance, side: 'before' | 'after'): void;
 	moveToEditor(source: ITerminalInstance): void;
+	moveToTerminalView(source?: ITerminalInstance): Promise<void>;
 
 	/**
 	 * Perform an action with the active terminal instance, if the terminal does
@@ -246,6 +247,7 @@ export interface ITerminalEditorService {
 	readonly terminalEditorInstances: ITerminalInstance[];
 
 	createEditor(instance: ITerminalInstance): Promise<void>;
+	detachActiveEditorInstance(): ITerminalInstance;
 }
 
 export interface IRemoteTerminalService extends IOffProcessTerminalService {

src/vs/workbench/contrib/terminal/browser/terminalActions.ts

@@ -225,6 +225,20 @@ export function registerTerminalActions() {
 		}
 	});
 
+	registerAction2(class extends Action2 {
+		constructor() {
+			super({
+				id: TerminalCommandId.MoveToTerminalView,
+				title: { value: localize('workbench.action.terminal.moveToTerminalView', "Move From Editor to Terminal View"), original: 'Move From Editor to Terminal View' },
+				f1: true,
+				category
+			});
+		}
+		async run(accessor: ServicesAccessor) {
+			await accessor.get(ITerminalService).moveToTerminalView();
+		}
+	});
+
 	registerAction2(class extends Action2 {
 		constructor() {
 			super({

src/vs/workbench/contrib/terminal/browser/terminalEditorService.ts

@@ -30,4 +30,16 @@ export class TerminalEditorService implements ITerminalEditorService {
 		});
 		this.terminalEditorInstances.push(instance);
 	}
+
+	detachActiveEditorInstance(): ITerminalInstance {
+		const activeEditor = this._editorService.activeEditor;
+		if (!(activeEditor instanceof TerminalEditorInput)) {
+			throw new Error('Active editor is not a terminal');
+		}
+		const instance = activeEditor.terminalInstance;
+		this._editorInputs.delete(instance.instanceId);
+		// TODO: Ensure the terminal process doesn't get disposed here
+		activeEditor.dispose();
+		return instance;
+	}
 }

src/vs/workbench/contrib/terminal/browser/terminalService.ts

@@ -764,6 +764,9 @@ export class TerminalService implements ITerminalService {
 	}
 
 	moveToEditor(source: ITerminalInstance): void {
+		if (source.target === TerminalTarget.Editor) {
+			return;
+		}
 		const sourceGroup = this.getGroupForInstance(source);
 		if (!sourceGroup) {
 			return;
@@ -772,6 +775,38 @@ export class TerminalService implements ITerminalService {
 		this._terminalEditorService.createEditor(source);
 	}
 
+	async moveToTerminalView(source?: ITerminalInstance): Promise<void> {
+		if (!source) {
+			source = this._terminalEditorService.detachActiveEditorInstance();
+			if (!source) {
+				return;
+			}
+		}
+
+		if (source.target !== TerminalTarget.Editor) {
+			return;
+		}
+		source.target = TerminalTarget.TerminalView;
+
+		// TODO: Share code with joinInstances
+		const group = this._instantiationService.createInstance(TerminalGroup, this._terminalContainer, undefined);
+		group.onPanelOrientationChanged((orientation) => this._onPanelOrientationChanged.fire(orientation));
+		this._terminalGroups.push(group);
+		group.addDisposable(group.onDisposed(this._onGroupDisposed.fire, this._onGroupDisposed));
+		group.addDisposable(group.onInstancesChanged(this._onInstancesChanged.fire, this._onInstancesChanged));
+
+		group.addInstance(source);
+		this.setActiveInstance(source);
+		await this.showPanel(true);
+		// TODO: Shouldn't this happen automatically?
+		source.setVisible(true);
+
+		// Fire events
+		this._onInstancesChanged.fire();
+		this._onGroupsChanged.fire();
+		this._onActiveGroupChanged.fire();
+	}
+
 	protected _initInstanceListeners(instance: ITerminalInstance): void {
 		instance.addDisposable(instance.onDisposed(this._onInstanceDisposed.fire, this._onInstanceDisposed));
 		instance.addDisposable(instance.onTitleChanged(this._onInstanceTitleChanged.fire, this._onInstanceTitleChanged));

src/vs/workbench/contrib/terminal/common/terminal.ts

@@ -450,7 +450,8 @@ export const enum TerminalCommandId {
 	SearchWorkspace = 'workbench.action.terminal.searchWorkspace',
 	AttachToRemoteTerminal = 'workbench.action.terminal.attachToSession',
 	DetachProcess = 'workbench.action.terminal.detachProcess',
-	MoveToEditor = 'workbench.action.terminal.moveToEditor'
+	MoveToEditor = 'workbench.action.terminal.moveToEditor',
+	MoveToTerminalView = 'workbench.action.terminal.moveToTerminalView',
 }
 
 export const DEFAULT_COMMANDS_TO_SKIP_SHELL: string[] = [