Method getController

packages/fairygui/src/core/GComponent.ts:401–408

* Get controller by name * 通过名称获取控制器

(name: string)

     * 通过名称获取控制器
     */
    public getController(name: string): Controller | null {
        for (const c of this._controllers) {
            if (c.name === name) {
                return c;
            }
        }
        return null;
    }

    /**
     * Add controller