export class ToolBase {
	constructor(viewer) {
		this.viewer = viewer
		this.handler = null
		this.listeners = []
	}

	subscribe(key, listener) {
		this.listeners.push({ key, listener })
	}

	notify(key, data) {
		this.listeners.filter(item => item.key === key).forEach(item => item.listener(data))
	}

	removeHandler(types) {
		if (!this.handler) return
		if (types?.length) {
			types.forEach(type => this.handler.removeInputAction(type))
		}
		this.handler.destroy()
		this.handler = null
	}
}