/**
 * 长按脚本
 */
export default class UILongPress extends Laya.Script {
    /** @prop {name:longpressTime, tips:"长按时间", type:number, default:500}*/ 
    public  longpressTime: number = 500;
    /** @prop {name:isOnceFlag, tips:"是否只触发一次长按", type:Boolean, default:true}*/
    public  isOnceFlag:Boolean = true;//是否只触发一次长按
    public  isMouseDown:Boolean = false;//是否鼠标按下
    public  lastMouseDownTime:number = 0;//上次鼠标按下时间
    public  ownerSprite:Laya.UIComponent;

    public static  stop:Boolean = false;

    private  mLongPressHandler:Laya.Handler;
    private  mClickHandler:Laya.Handler;    
    private  mLongPressTriggleTime:number = 100;//长按时间统计变量，初始值给跟间隔一样，这样只要长按后就会立马触发一次
    private  mLongPressIntervalTime:number = 100;//判定长按后 每100ms触发一次clickhander
    private  mTarget:any;

    public  get clickHandler():Laya.Handler{
        return this.mClickHandler;
    }
    public  set clickHandler(value:Laya.Handler){
        this.mClickHandler = value;
    }
    public  get longPressHandler():Laya.Handler{
        return this.mLongPressHandler;
    }
    public  set longPressHandler(value:Laya.Handler){
        this.mLongPressHandler = value;
    }

    onEnable():void {
        this.ownerSprite = this.owner as Laya.UIComponent;
        this.ownerSprite.on(Laya.Event.MOUSE_DOWN,this,this.onMouseDown);
    }
    
    onDisable():void {
        this.mClickHandler = this.longPressHandler = null
    }

    onMouseDown(e:Laya.Event):void{
        UILongPress.stop = false;
        this.mTarget = e;
        this.isMouseDown = true
        this.lastMouseDownTime = Laya.Browser.now()
        this.ownerSprite.on(Laya.Event.MOUSE_UP,this,this.onMouseUp)
        this.ownerSprite.on(Laya.Event.MOUSE_OUT,this,this.onMouseOut)
    }

    onMouseUp(e:Laya.Event):void{
        this.isMouseDown = false
        this.mClickHandler && this.mClickHandler.runWith(e)
        this.mTarget = null;
    }

    onMouseOut(e:Laya.Event):void{
        this.isMouseDown = false
        this.ownerSprite.off(Laya.Event.MOUSE_UP,this,this.onMouseUp)
        this.ownerSprite.off(Laya.Event.MOUSE_OUT,this,this.onMouseOut)
        this.mTarget = null
    }

    onUpdate():void{
        if(UILongPress.stop && this.mTarget){
            UILongPress.stop = false
            this.onMouseOut(this.mTarget);
            return;
        }
        if(this.isMouseDown && Laya.Browser.now()-this.lastMouseDownTime>this.longpressTime){
            if(this.mLongPressTriggleTime>=this.mLongPressIntervalTime){
                if(this.isOnceFlag){
                    this.cancelLongPress();
                }
                this.mLongPressHandler && this.mLongPressHandler.run();
                
                this.mLongPressTriggleTime=0;
            }else{
                this.mLongPressTriggleTime += Laya.timer.delta;
            }
        }
    }
    
    //常用脚本组件尽量重写reset方法 可以在destroy后自动回收到对象池
    onReset():void{
        this.lastMouseDownTime=0;
        this.isMouseDown=false;
        this.longpressTime=500;
        if(this.mLongPressHandler){
            this.mLongPressHandler.recover();
            this.mLongPressHandler=null;
        }
        if(this.mClickHandler){
            this.mClickHandler.recover();
            this.mClickHandler=null;
        }
    }
    
    //当条件不满足时，要取消长按事件
    cancelLongPress():void{
        this.isMouseDown = false
        this.ownerSprite.off(Laya.Event.MOUSE_UP,this,this.onMouseUp)
        this.ownerSprite.off(Laya.Event.MOUSE_OUT,this,this.onMouseOut)
    }
    
}

调用

const longpress:UILongPress = this.mBtnLongpress.getComponent(UILongPress);
longpress.isOnceFlag = false;
longpress.longPressHandler = Laya.Handler.create(this, this.OnBtnLongpress, null, false);
longpress.clickHandler = Laya.Handler.create(this, this.OnBtnLongpress, null, false);

private OnBtnLongpress():void{
}