esengine/source/src/Utils/GlobalManager.ts

module es {
    export class GlobalManager {
        public static globalManagers: GlobalManager[] = [];
        private _enabled: boolean;

        public get enabled(){
            return this._enabled;
        }
        public set enabled(value: boolean){
            this.setEnabled(value);
        }
        public setEnabled(isEnabled: boolean){
            if (this._enabled != isEnabled){
                this._enabled = isEnabled;
                if (this._enabled){
                    this.onEnabled();
                } else {
                    this.onDisabled();
                }
            }
        }

        public onEnabled(){}

        public onDisabled(){}

        public update(){}

        public static registerGlobalManager(manager: GlobalManager){
            this.globalManagers.push(manager);
            manager.enabled = true;
        }

        public static unregisterGlobalManager(manager: GlobalManager){
            this.globalManagers.remove(manager);
            manager.enabled = false;
        }

        public static getGlobalManager<T extends GlobalManager>(type){
            for (let i = 0; i < this.globalManagers.length; i ++){
                if (this.globalManagers[i] instanceof type)
                    return this.globalManagers[i] as T;
            }

            return null;
        }
    }
}