Class MultiStepInput

quickinput-sample/src/multiStepInput.ts:169–314

}

class MultiStepInput {

	static async run(start: InputStep) {
		const input = new MultiStepInput();
		return input.stepThrough(start);
	}

	private current?: QuickInput;
	private steps: InputStep[] = [];

	private async stepThrough(start: InputStep) {
		let step: InputStep | void = start;
		while (step) {
			this.steps.push(step);
			if (this.current) {
				this.current.enabled = false;
				this.current.busy = true;
			}
			try {
				step = await step(this);
			} catch (err) {
				if (err === InputFlowAction.back) {
					this.steps.pop();
					step = this.steps.pop();
				} else if (err === InputFlowAction.resume) {
					step = this.steps.pop();
				} else if (err === InputFlowAction.cancel) {
					step = undefined;
				} else {
					throw err;
				}
			}
		}
		if (this.current) {
			this.current.dispose();
		}
	}

	async showQuickPick<T extends QuickPickItem, P extends QuickPickParameters<T>>({ title, step, totalSteps, items, activeItem, ignoreFocusOut, placeholder, buttons, shouldResume }: P) {
		const disposables: Disposable[] = [];
		try {
			return await new Promise<T | (P extends { buttons: (infer I)[] } ? I : never)>((resolve, reject) => {
				const input = window.createQuickPick<T>();
				input.title = title;
				input.step = step;
				input.totalSteps = totalSteps;
				input.ignoreFocusOut = ignoreFocusOut ?? false;
				input.placeholder = placeholder;
				input.items = items;
				if (activeItem) {
					input.activeItems = [activeItem];
				}
				input.buttons = [
					...(this.steps.length > 1 ? [QuickInputButtons.Back] : []),
					...(buttons || [])
				];
				disposables.push(
					input.onDidTriggerButton(item => {