/*
文件名:Scroll_Bar.nut
路径:User/UI/Widget/Scroll_Bar.nut
创建日期:2024-12-13	23:17
文件用途:
*/
//滚动条
class Yosin_ScrollBar extends Yosin_CommonUi {
    //控制器
    Controller = null;
    //是否焦点
    IsFocus = false;
    //上按钮
    UpButton = null;
    //滚动按钮
    ScrollButton = null;
    //下按钮
    DownButton = null;

    //滚动条状态
    ScrollBarState = true;

    //回调函数
    OnChange = null;

    //Path
    Path = "sprite/interface/lenheartwindowcommon.img";

    constructor(X, Y, H, S_H) {
        base.constructor(X, Y, 9, H > 26 ? H : 26);

        Controller = {
            CurPos = 0,
        }

        //上按钮
        UpButton = Yosin_BaseButton(0, 0, 9, 13, Path, 16);
        //点击事件回调
        UpButton.OnClick = function(Button) {

        }.bindenv(this);
        AddUIChild(UpButton);

        //滚动条
        ScrollButton = Yosin_DragButton(0, 13, 9, S_H, Path, 184, false, false, true);
        ScrollButton.OnChange = OnChange;
        ScrollButton.SetMaxMoveValue(Height - 26);
        AddUIChild(ScrollButton);

        //下按钮
        DownButton = Yosin_BaseButton(0, Height - 13, 9, 13, Path, 22);
        //点击事件回调
        DownButton.OnClick = function(Button) {

        }.bindenv(this);
        AddUIChild(DownButton);

    }

    function Proc(Dt) {
        base.Proc(Dt);
        if (ScrollButton) Controller.CurPos = ScrollButton.Detect_Value;
    }

    //设置滚动条长度
    function SetScrollBarHeight(height) {
        if (ScrollButton) {
            RemoveUIChild(ScrollButton);
            ScrollButton = null;
        }
        SetScrollBarState(true);
        ScrollButton = Yosin_DragButton(0, 13, 9, height.tointeger(), Path, 184, false, false, true);
        ScrollButton.OnChange = OnChange;
        ScrollButton.SetMaxMoveValue(Height - 26);
        AddUIChild(ScrollButton);
    }

    //设置滚动条状态
    function SetScrollBarState(Flag) {
        if (ScrollBarState == Flag) return;
        ScrollBarState = Flag;
        if (!Flag) {
            UpButton.State = 3;
            DownButton.State = 3;
            if (ScrollButton) {
                RemoveUIChild(ScrollButton);
                ScrollButton = null;
            }
        } else {
            UpButton.State = 0;
            DownButton.State = 0;
        }
    }

    //设置滚动条数值
    function SetScrollBarValue(Value) {
        if (ScrollButton) {
            ScrollButton.SetPos(0, Value * (ScrollButton.Max_Move_Value - ScrollButton.Height + 13))
            ScrollButton.DragLogic(Value);
        }
    }

    //设置滚动
    function SetScroll(Flag) {
        if (ScrollButton) {
            local Value = Controller.CurPos;
            if (Flag) Value += 0.1;
            else Value -= 0.1;
            if (Value< 0) Value = 0;
            if (Value > 1) Value = 1;
            ScrollButton.SetPos(0, Value * (ScrollButton.Max_Move_Value - ScrollButton.Height + 13))
            ScrollButton.DragLogic(Value);
        }
    }

    function SetChangeCallBack(Func) {
        OnChange = Func;
    }

}