using System;
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using UIKit;
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using CoreGraphics;
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using Shared.IO;
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using Foundation;
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using MJRefresh;
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namespace Shared
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{
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/// <summary>
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/// 位置布局 带下拉刷新
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/// </summary>
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public class VerticalRefreshLayout : ViewGroup
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{
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public Action BeginHeaderRefreshingAction;
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//public Action BeginFooterRefreshingAction;
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MyRefreshScrolViewLayout mUIScrollView;
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public VerticalRefreshLayout()
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{
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mUIScrollView = new MyRefreshScrolViewLayout(this) { };
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viewGroup = mUIScrollView;
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realViewGroup = mUIScrollView;
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_isCanHeaderRefresh = true;
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MJRefreshNormalHeader header = new MJRefreshNormalHeader();
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//隐藏提示文字
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header.LastUpdatedTimeLabel.Hidden = true;
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//header.StateLabel.Hidden = true;
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mUIScrollView.SetMj_header(header);
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header.RefreshingBlock = () =>
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{
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BeginHeaderRefreshingAction?.Invoke();
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};
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//header.SetTitle(NSBundle_MJRefresh.Mj_localizedStringForKey(NSBundle_MJRefresh.Mj_refreshBundle(NSBundle.MainBundle), "MJRefreshHeaderIdleText"), MJRefreshState.Idle);
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//header.SetTitle(NSBundle_MJRefresh.Mj_localizedStringForKey(NSBundle_MJRefresh.Mj_refreshBundle(NSBundle.MainBundle), "MJRefreshHeaderPullingText"), MJRefreshState.Pulling);
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//header.SetTitle(NSBundle_MJRefresh.Mj_localizedStringForKey(NSBundle_MJRefresh.Mj_refreshBundle(NSBundle.MainBundle), "MJRefreshHeaderRefreshingText"), MJRefreshState.Refreshing);
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//header.AutomaticallyChangeAlpha = true;
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}
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//private void AddFotterView() {
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// MJRefreshAutoNormalFooter footer = new MJRefreshAutoNormalFooter();
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// mUIScrollView.SetMj_footer(footer);
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// footer.RefreshingBlock = async () =>
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// {
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// BeginFooterRefreshingAction?.Invoke();
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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 (!mUIScrollView.Mj_header().Refreshing)
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{
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mUIScrollView.Mj_header().BeginRefreshing();
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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 (mUIScrollView.Mj_header().Refreshing)
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{
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mUIScrollView.Mj_header().EndRefreshing();
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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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public bool VerticalScrollBarEnabled
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{
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get
{
return mUIScrollView.ShowsVerticalScrollIndicator;
}
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set
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{
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mUIScrollView.ShowsVerticalScrollIndicator = value;
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}
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}
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/// <summary>
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/// 垂直方向滚动视图
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/// </summary>
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class MyRefreshScrolViewLayout : UIScrollView
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{
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[Weak] VerticalRefreshLayout _view;
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public MyRefreshScrolViewLayout(VerticalRefreshLayout view)
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{
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this._view = view;
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Scrolled += (sender, e) =>
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{
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this._view?.ScrolledEventHandler?.Invoke(this, new MouseEventArgs { X = (float)(sender as MyRefreshScrolViewLayout).ContentOffset.X, Y = (float)(sender as MyRefreshScrolViewLayout).ContentOffset.Y });
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};
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}
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/// <summary>
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/// 点击开始
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/// </summary>
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/// <param name="touches">Touches.</param>
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/// <param name="evt">Evt.</param>
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public override void TouchesBegan(NSSet touches, UIEvent evt)
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{
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_view?.TouchEvent(EventActions.Down, (touches.AnyObject as UITouch).LocationInView(this));
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}
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/// <summary>
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/// 移动
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/// </summary>
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/// <param name="touches">Touches.</param>
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/// <param name="evt">Evt.</param>
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public override void TouchesMoved(NSSet touches, UIEvent evt)
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{
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_view?.TouchEvent(EventActions.Move, (touches.AnyObject as UITouch).LocationInView(this));
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}
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/// <summary>
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/// 点击弹起
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/// </summary>
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/// <param name="touches">Touches.</param>
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/// <param name="evt">Evt.</param>
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public override void TouchesEnded(NSSet touches, UIEvent evt)
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{
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_view?.TouchEvent(EventActions.Up, (touches.AnyObject as UITouch).LocationInView(this));
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}
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public override void TouchesCancelled(NSSet touches, UIEvent evt)
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{
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_view?.TouchEvent(EventActions.Cancel, (touches.AnyObject as UITouch).LocationInView(this));
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}
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/// <summary>
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/// 框架默认加了两个UIImageView ，这样可以去掉默认添加
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/// </summary>
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/// <param name="view">View.</param>
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public override void AddSubview(UIView view)
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{
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if (view.GetType() == typeof(UIImageView) && view.Tag != int.MinValue)
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{
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return;
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}
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base.AddSubview(view);
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}
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}
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/// <summary>
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/// 增加控件
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/// </summary>
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/// <param name="view">子控件</param>
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public override void AddChidren(View view)
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{
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base.AddChidren(view);
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ReLocation();
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}
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/// <summary>
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/// 重新排位置及设备内容大小
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/// </summary>
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public virtual void ReLocation()
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{
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if (0 == viewList.Count)
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{
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return;
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}
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var frame1 = viewList[0].RealView.Frame;
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frame1.Y = 0;
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viewList[0].RealView.Frame = frame1;
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for (int i = 1; i < viewList.Count; i++)
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{
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var frame = viewList[i].RealView.Frame;
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frame.Y = viewList[i - 1].RealView.Frame.Bottom;
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viewList[i].RealView.Frame = frame;
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}
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(realViewGroup as MyRefreshScrolViewLayout).ContentSize = new CoreGraphics.CGSize(0, viewList[viewList.Count - 1].Bottom <= Height ? Height + 1 : viewList[viewList.Count - 1].Bottom);
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}
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/// <summary>
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/// 移除所有的视图
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/// </summary>
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public override void RemoveAll()
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{
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base.RemoveAll();
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ReLocation();
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}
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/// <summary>
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/// 移除当前视图
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/// </summary>
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/// <param name="view">当前视图</param>
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internal override void Remove(View view)
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{
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base.Remove(view);
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ReLocation();
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}
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/// <summary>
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/// 移除指定索引
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/// </summary>
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/// <param name="index">索引</param>
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public override void RemoveAt(int index)
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{
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base.RemoveAt(index);
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ReLocation();
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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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///// <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 (realViewGroup as MyRefreshScrolViewLayout).ScrollEnabled;
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// }
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// set
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// {
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// (realViewGroup as MyRefreshScrolViewLayout).ScrollEnabled = 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 (realViewGroup as MyRefreshScrolViewLayout).Decelerating;
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// }
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//}
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/// <summary>
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/// 滑动事件
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/// </summary>
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public EventHandler<MouseEventArgs> ScrolledEventHandler;
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}
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}
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