using System;
using Android.Widget;
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using Com.Scwang.Smartrefresh.Layout;
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using Com.Scwang.Smartrefresh.Layout.Header;
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using Com.Scwang.Smartrefresh.Layout.Listener;
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using Com.Scwang.Smartrefresh.Layout.Api;
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using Com.Scwang.Smartrefresh.Layout.Constant;
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namespace Shared
{
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//VerticalRefreshLayout 带下拉刷新
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/// <summary>
/// 位置布局
/// </summary>
public class VerticalRefreshLayout : ViewGroup
{
public Action BeginHeaderRefreshingAction;
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private ScrollView mAndroidRefreshScrolView;
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private SmartRefreshLayout mSmartRefreshLayout;
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/// <summary>
/// 构造函数
/// </summary>
public VerticalRefreshLayout()
{
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mSmartRefreshLayout = new SmartRefreshLayout(Application.Activity);
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ClassicsHeader mClassicsHeader = new ClassicsHeader(Application.Activity);
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//隐藏最后刷新时间文字
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mClassicsHeader.SetEnableLastTime(false);
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mSmartRefreshLayout.SetRefreshHeader(mClassicsHeader);
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mOnRefreshListener = new OnRefreshListener(this);
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mSmartRefreshLayout.SetOnRefreshListener(mOnRefreshListener);
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viewGroup = mSmartRefreshLayout;
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mAndroidRefreshScrolView = new ScrollView(Application.Activity, null);
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viewGroup.AddView(mAndroidRefreshScrolView);
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realViewGroup = new AndroidLinearLayout(Application.Activity, this);
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(realViewGroup as AndroidLinearLayout).Orientation = Orientation.Vertical;
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mAndroidRefreshScrolView.AddView(realViewGroup);
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_isCanHeaderRefresh = true;
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}
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OnRefreshListener mOnRefreshListener;
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public class OnRefreshListener : Java.Lang.Object, IOnRefreshListener
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{
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VerticalRefreshLayout _VerticalRefreshLayout;
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public OnRefreshListener(VerticalRefreshLayout view)
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{
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_VerticalRefreshLayout = view;
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}
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public void OnRefresh(IRefreshLayout p0)
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{
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_VerticalRefreshLayout.BeginHeaderRefreshingAction?.Invoke();
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}
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}
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/// <summary>
/// 视图宽度
/// </summary>
/// <value>The width.</value>
public override int Width
{
get
{
return base.Width;
}
set
{
base.Width = value;
if (!IsCanRefresh)
{
return;
}
var layoutParameters = realViewGroup.LayoutParameters;
layoutParameters.Width = Width;
realViewGroup.LayoutParameters = layoutParameters;
}
}
/// <summary>
/// 视图高度
/// </summary>
/// <value>The height.</value>
public override int Height
{
get
{
return base.Height;
}
set
{
base.Height = value;
if (!IsCanRefresh)
{
return;
}
var layoutParameters = realViewGroup.LayoutParameters;
layoutParameters.Height = Height;
realViewGroup.LayoutParameters = layoutParameters;
}
}
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///// <summary>
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///// 是否允许滑动
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///// </summary>
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///// <value><c>true</c> if scroll enabled; otherwise, <c>false</c>.</value>
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//public bool ScrollEnabled
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//{
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// get
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// {
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// return (mAndroidRefreshScrolView as AndroidScrolView).ScrollEnable;
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// }
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// set
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// {
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// (mAndroidRefreshScrolView as AndroidScrolView).ScrollEnable = value;
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// }
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//}
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///// <summary>
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///// 是否正在滑动
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///// </summary>
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///// <value><c>true</c> if decelerating; otherwise, <c>false</c>.</value>
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//public bool Decelerating
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//{
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// get
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// {
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// return false;
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// }
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//}
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//***************************下拉刷新***************************
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/// <summary>
/// 是否支持下拉刷新
/// </summary>
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bool _isCanHeaderRefresh;
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private bool IsCanHeaderRefresh
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{
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get
{
return _isCanHeaderRefresh;
}
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set
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{
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_isCanHeaderRefresh = value;
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}
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}
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/// <summary>
/// 头开始刷新
/// </summary>
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public void BeginHeaderRefreshing()
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{
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if (!IsCanHeaderRefresh) return;
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if (mSmartRefreshLayout.State != RefreshState.Refreshing)
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{
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mSmartRefreshLayout.AutoRefresh();
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//Shared.HDLUtils.WriteLine("AutoRefresh");
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}
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}
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/// <summary>
/// 头结束刷新
/// </summary>
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public void EndHeaderRefreshing()
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{
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if (!IsCanHeaderRefresh) return;
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if (mSmartRefreshLayout.State == RefreshState.Refreshing)
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{
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mSmartRefreshLayout.FinishRefresh();
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//Shared.HDLUtils.WriteLine("FinishRefresh");
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}
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}
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/// <summary>
/// 是否显示滚动条
/// </summary>
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//bool _IsShowScrollBar;
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public bool VerticalScrollBarEnabled
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{
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get
{
return mAndroidRefreshScrolView.VerticalScrollBarEnabled;
}
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set
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{
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mAndroidRefreshScrolView.VerticalScrollBarEnabled = value;
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}
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}
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////***************************上拉加载***************************
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///// <summary>
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///// 是否正在上拉加载
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///// </summary>
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//bool _isFooterRefreshing;
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//public bool IsFooterRefreshing
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//{
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// get
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// {
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// return _isFooterRefreshing;
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// }
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// set
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// {
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// _isFooterRefreshing = value;
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// }
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//}
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///// <summary>
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///// 底部 开始上拉加载
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///// </summary>
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//public void beginFooterRefreshing()
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//{
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// if (!IsCanFooterRefresh) return;
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// if (!IsFooterRefreshing)
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// {
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// mFooterLoadingView.Start(mHeaderRefreshText);
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// IsFooterRefreshing = true;
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// beginFooterRefreshingAction?.Invoke();
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// }
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//}
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///// <summary>
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///// 底部 结束上拉加载
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///// </summary>
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//public void endFooterRefreshing()
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//{
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// if (!IsCanFooterRefresh) return;
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// if (IsFooterRefreshing)
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// {
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// mFooterLoadingView.Hide();
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// IsFooterRefreshing = false;
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// }
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//}
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}
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///// <summary>
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///// 竖直方向滑动控件
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///// </summary>
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//class AndroidRefreshScrolView : Android.Widget.ScrollView
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//{
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// /// <summary>
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// /// 是否允许滑动
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// /// </summary>
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// public bool ScrollEnable = true;
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// public Action AlreadyToTopAction;
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// public Action AlreadyToTopUpAction;
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// public Action AlreadyToBottomAction;
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// View _view;
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// /// <summary>
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// /// 构造函数
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// /// </summary>
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// /// <param name="context">Context.</param>
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// /// <param name="view">View.</param>
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// public AndroidRefreshScrolView(Context context, View view)
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// : base(context)
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// {
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// _view = view;
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// VerticalScrollBarEnabled = true;
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// //mScroller = new Scroller(context, new DecelerateInterpolator());
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// }
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// bool bAlreadyToTop;
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// public override bool DispatchTouchEvent(MotionEvent e)
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// {
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// //Shared.HDLUtils.WriteLine($"{GetType()} Height->{Height} Width->{Width} DispatchTouchEvent->{e.Action}");
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// if (e.Action == MotionEventActions.Down)
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// {
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// //还原允许拦截事件
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// RequestDisallowInterceptTouchEvent(false);
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// }
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// return base.DispatchTouchEvent(e);
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// }
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// float mLastX, mLastY ;
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// public override bool OnInterceptTouchEvent(MotionEvent ev)
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// {
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// //Shared.HDLUtils.WriteLine($"{GetType()} Height->{Height} Width->{Width} OnInterceptTouchEvent->{ev.Action}");
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// if (!ScrollEnable || disallowIntercept)
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// {
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// return false;
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// }
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// switch (ev.Action)
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// {
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// case MotionEventActions.Down:
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// mLastX = ev.RawX;
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// mLastY = ev.RawY;
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// bAlreadyToTop = false;
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// Shared.HDLUtils.WriteLine($"MotionEventActions.Down");
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// Parent?.RequestDisallowInterceptTouchEvent(true);
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// break;
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// case MotionEventActions.Up:
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// Parent?.RequestDisallowInterceptTouchEvent(true);
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// Shared.HDLUtils.WriteLine($"MotionEventActions.Up");
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// if (bAlreadyToTop)
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// {
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// AlreadyToTopUpAction?.Invoke();
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// Shared.HDLUtils.WriteLine($"AlreadyToTopUpAction");
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// }
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// break;
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// case MotionEventActions.Move:
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// var x = ev.RawX;
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// var y = ev.RawY;
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// var deltaX = x - mLastX;
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// var deltaY = y - mLastY;
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// Shared.HDLUtils.WriteLine($"MotionEventActions.Move");
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// if (Math.Abs(deltaX) < Math.Abs(deltaY))
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// {
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// //向下滑动，如果当前已经滑动到顶，就允许父控件的拦截事件
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// if (deltaY > 0 && ScrollY == 0)
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// {
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// bAlreadyToTop = true;
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// AlreadyToTopAction?.Invoke();
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// Parent?.RequestDisallowInterceptTouchEvent(false);
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// return false;
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// }
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// //向上滑动时，如果translateY等于高度时，即表明滑动到底部，可又顶层View控制滑动
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// var mChildH = 0;
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// if (0 < ChildCount)
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// {
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// mChildH = GetChildAt(ChildCount - 1).Bottom;
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// }
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// var translateY = mChildH - ScrollY;
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// if (deltaY < 0 && translateY == Height)
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// {
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// AlreadyToBottomAction?.Invoke();
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// Parent?.RequestDisallowInterceptTouchEvent(false);
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// return false;
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// }
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// }
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// else
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// {
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// //左右滑动时，允许父控件的拦截
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// if (4 < Math.Abs(deltaX))
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// {
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// Parent?.RequestDisallowInterceptTouchEvent(false);
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// }
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// }
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// break;
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// }
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// return base.OnInterceptTouchEvent(ev);
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// }
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// /// <summary>
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// /// 重写点击事件
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// /// </summary>
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// /// <returns><c>true</c>, if touch event was oned, <c>false</c> otherwise.</returns>
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// /// <param name="e">E.</param>
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// public override bool OnTouchEvent(MotionEvent e)
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// {
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// //Shared.HDLUtils.WriteLine($"{GetType()} Height->{Height} Width->{Width} OnInterceptTouchEvent->{e.Action}");
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// _view?.TouchEvent(e);
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// base.OnTouchEvent(e);
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// //如果返回真父控件就不需要处理了
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// return true;
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// }
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// bool disallowIntercept;
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// public override void RequestDisallowInterceptTouchEvent(bool disallowIntercept)
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// {
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// this.disallowIntercept = disallowIntercept;
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// //Shared.HDLUtils.WriteLine($"{GetType()} Height->{Height} RequestDisallowInterceptTouchEvent->{disallowIntercept}");
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// base.RequestDisallowInterceptTouchEvent(disallowIntercept);
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// Parent?.RequestDisallowInterceptTouchEvent(disallowIntercept);
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// }
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//}
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}
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