Public Class MyCard

    '控件
    Inherits Grid
    Private ReadOnly MainGrid As Grid
    Private ReadOnly MainChrome As SystemDropShadowChrome
    Private ReadOnly MainBorder As Border
    Public Property BorderChild As UIElement
        Get
            Return MainBorder.Child
        End Get
        Set(value As UIElement)
            MainBorder.Child = value
        End Set
    End Property
    Public MainTextBlock As TextBlock
    Public MainSwap As Shapes.Path

    '属性
    Public Uuid As Integer = GetUuid()
    Public Property Title As String
        Get
            Return GetValue(TitleProperty)
        End Get
        Set(value As String)
            SetValue(TitleProperty, value)
            If MainTextBlock IsNot Nothing Then MainTextBlock.Text = value
        End Set
    End Property
    Public Shared ReadOnly TitleProperty As DependencyProperty = DependencyProperty.Register("Title", GetType(String), GetType(MyCard), New PropertyMetadata(""))

    'UI 建立
    Public Sub New()
        MainChrome = New SystemDropShadowChrome With {.Margin = New Thickness(-9.5, -9, 0.5, -0.5), .Opacity = 0.1, .CornerRadius = New CornerRadius(6)}
        MainChrome.SetResourceReference(SystemDropShadowChrome.ColorProperty, "ColorObject1")
        Children.Insert(0, MainChrome)
        MainBorder = New Border With {.Background = New SolidColorBrush(Color.FromArgb(205, 255, 255, 255)), .CornerRadius = New CornerRadius(6), .IsHitTestVisible = False}
        Children.Insert(1, MainBorder)
        MainGrid = New Grid
        Children.Add(MainGrid)
    End Sub
    Private IsLoad As Boolean = False
    Private Sub MyCard_Loaded() Handles Me.Loaded
        '卡片的进入时动画已被页面通用切换动画替代
        'If LoadAnimation AndAlso IsLoad Then
        '    StartHeightAnimation(Math.Min(50, ActualHeight), ActualHeight - Math.Min(50, ActualHeight), True)
        'End If
        If IsLoad Then Exit Sub
        '初次加载限定
        If Not Title = "" AndAlso IsNothing(MainTextBlock) Then
            MainTextBlock = New TextBlock With {.HorizontalAlignment = HorizontalAlignment.Left, .VerticalAlignment = VerticalAlignment.Top, .Margin = New Thickness(15, 12, 0, 0), .FontWeight = FontWeights.Bold, .FontSize = 13, .IsHitTestVisible = False}
            MainTextBlock.SetResourceReference(TextBlock.ForegroundProperty, "ColorBrush1")
            MainTextBlock.SetBinding(TextBlock.TextProperty, New Binding("Title") With {.Source = Me, .Mode = BindingMode.OneWay})
            MainGrid.Children.Add(MainTextBlock)
        End If
        If CanSwap OrElse SwapControl IsNot Nothing Then
            If SwapControl Is Nothing AndAlso Children.Count > 3 Then SwapControl = Children(3)
            MainSwap = New Shapes.Path With {.HorizontalAlignment = HorizontalAlignment.Right, .Stretch = Stretch.Uniform, .Height = 6, .Width = 10, .VerticalAlignment = VerticalAlignment.Top, .Margin = New Thickness(0, 17, 16, 0), .Data = New GeometryConverter().ConvertFromString("M2,4 l-2,2 10,10 10,-10 -2,-2 -8,8 -8,-8 z"), .RenderTransform = New RotateTransform(180), .RenderTransformOrigin = New Point(0.5, 0.5)}
            MainSwap.SetResourceReference(Shapes.Path.FillProperty, "ColorBrush1")
            MainGrid.Children.Add(MainSwap)
        End If
        IsLoad = True
        '改变默认的折叠
        If IsSwaped AndAlso SwapControl IsNot Nothing Then
            MainSwap.RenderTransform = New RotateTransform(If(SwapLogoRight, 270, 0))
            '取消由于高度变化被迫触发的高度动画
            Dim RawUseAnimation As Boolean = UseAnimation
            UseAnimation = False
            Height = SwapedHeight
            AniStop("MyCard Height " & Uuid)
            IsHeightAnimating = False
            RunInUi(Sub() UseAnimation = RawUseAnimation, True)
        End If
    End Sub
    Public Sub StackInstall()
        StackInstall(SwapControl, SwapType, Title)
        TriggerForceResize()
    End Sub
    Public Shared Sub StackInstall(ByRef Stack As StackPanel, Type As Integer, Optional CardTitle As String = "")
        '这一部分的代码是好几年前留下的究极屎坑，当时还不知道该咋正确调用这种方法，就写了这么一坨屎
        '但是现在……反正勉强能用……懒得改了就这样吧.jpg
        '别骂了别骂了.jpg
        If IsNothing(Stack.Tag) Then Exit Sub
        '排序
        Select Case Type
            Case 3
                Stack.Tag = Sort(CType(Stack.Tag, List(Of DlOptiFineListEntry)), Function(Left As DlOptiFineListEntry, Right As DlOptiFineListEntry) As Boolean
                                                                                     Return VersionSortBoolean(Left.NameDisplay, Right.NameDisplay)
                                                                                 End Function)
            Case 4, 10
                Stack.Tag = Sort(CType(Stack.Tag, List(Of DlLiteLoaderListEntry)), Function(Left As DlLiteLoaderListEntry, Right As DlLiteLoaderListEntry) As Boolean
                                                                                       Return VersionSortBoolean(Left.Inherit, Right.Inherit)
                                                                                   End Function)
            Case 6
                Stack.Tag = Sort(CType(Stack.Tag, List(Of DlForgeVersionEntry)), Function(Left As DlForgeVersionEntry, Right As DlForgeVersionEntry) As Boolean
                                                                                     Return VersionSortBoolean(Left.Version, Right.Version)
                                                                                 End Function)
            Case 8, 9
                Stack.Tag = Sort(CType(Stack.Tag, List(Of DlCfFile)), Function(Left As DlCfFile, Right As DlCfFile) As Boolean
                                                                          Return Left.Date > Right.Date
                                                                      End Function)
        End Select
        '控件转换
        Select Case Type
            Case 5
                Dim LoadingPickaxe As New MyLoading With {.Text = "正在获取版本列表", .Margin = New Thickness(5)}
                Dim Loader = New LoaderTask(Of String, List(Of DlForgeVersionEntry))("DlForgeVersion Main", AddressOf DlForgeVersionMain)
                LoadingPickaxe.State = Loader
                Loader.Start(Stack.Tag)
                AddHandler LoadingPickaxe.StateChanged, AddressOf FrmDownloadForge.Forge_StateChanged
                AddHandler LoadingPickaxe.Click, AddressOf FrmDownloadForge.Forge_Click
                Stack.Children.Add(LoadingPickaxe)
            Case 6
                ForgeDownloadListItemPreload(Stack, Stack.Tag, AddressOf ForgeSave_Click, True)
            Case 8
                DlCfFilesPreload(Stack, Stack.Tag, AddressOf FrmDownloadMod.ProjectClick)
        End Select
        '实现控件虚拟化
        For Each Data As Object In Stack.Tag
            Select Case Type
                Case 0
                    Stack.Children.Add(PageSelectRight.McVersionListItem(Data))
                Case 2
                    Stack.Children.Add(McDownloadListItem(Data, AddressOf McDownloadMenuSave, True))
                Case 3
                    Stack.Children.Add(OptiFineDownloadListItem(Data, AddressOf OptiFineSave_Click, True))
                Case 4
                    Stack.Children.Add(LiteLoaderDownloadListItem(Data, AddressOf FrmDownloadLiteLoader.DownloadStart, False))
                Case 5
                Case 6
                    Stack.Children.Add(ForgeDownloadListItem(Data, AddressOf ForgeSave_Click, True))
                Case 7
                    Stack.Children.Add(McDownloadListItem(Data, Sub(sender, e) '不能使用 AddressOf，这导致了 #535，原因完全不明，疑似是编译器 Bug
                                                                    FrmDownloadInstall.MinecraftSelected(sender, e)
                                                                End Sub, False))
                Case 8
                    Stack.Children.Add(CType(Data, DlCfFile).ToListItem(AddressOf FrmDownloadCfDetail.Save_Click))
                Case 9
                    Stack.Children.Add(CType(Data, DlCfFile).ToListItem(AddressOf FrmDownloadCfDetail.Install_Click, AddressOf FrmDownloadCfDetail.Save_Click))
                Case 10
                    Stack.Children.Add(LiteLoaderDownloadListItem(Data, AddressOf LiteLoaderSave_Click, True))
                Case 11
                    Stack.Children.Add(CType(Data, HelpEntry).ToListItem)
                Case Else
                    Log("未知的虚拟化种类：" & Type, LogLevel.Feedback)
            End Select
        Next
        Stack.Children.Add(New FrameworkElement With {.Height = 18}) '下边距，同时适应折叠
        Stack.Tag = Nothing
    End Sub

    '事件
    Private Sub MyCard_MouseEnter(sender As Object, e As MouseEventArgs) Handles Me.MouseEnter
        Dim AniList As New List(Of AniData)
        If Not IsNothing(MainTextBlock) Then AniList.Add(AaColor(MainTextBlock, TextBlock.ForegroundProperty, "ColorBrush2", 150))
        If Not IsNothing(MainSwap) Then AniList.Add(AaColor(MainSwap, Shapes.Path.FillProperty, "ColorBrush2", 150))
        AniList.AddRange({
                         AaColor(MainChrome, SystemDropShadowChrome.ColorProperty, "ColorObject2", 180),
                         AaColor(MainBorder, Border.BackgroundProperty, New MyColor(230, 255, 255, 255) - MainBorder.Background, 180),
                         AaOpacity(MainChrome, 0.3 - MainChrome.Opacity, 180)
                     })
        AniStart(AniList, "MyCard Mouse " & Uuid)
    End Sub
    Private Sub MyCard_MouseLeave(sender As Object, e As MouseEventArgs) Handles Me.MouseLeave
        Dim AniList As New List(Of AniData)
        If Not IsNothing(MainTextBlock) Then AniList.Add(AaColor(MainTextBlock, TextBlock.ForegroundProperty, "ColorBrush1", 250))
        If Not IsNothing(MainSwap) Then AniList.Add(AaColor(MainSwap, Shapes.Path.FillProperty, "ColorBrush1", 250))
        AniList.AddRange({
                         AaColor(MainChrome, SystemDropShadowChrome.ColorProperty, "ColorObject1", 300),
                         AaColor(MainBorder, Border.BackgroundProperty, New MyColor(205, 255, 255, 255) - MainBorder.Background, 300),
                         AaOpacity(MainChrome, 0.1 - MainChrome.Opacity, 300)
                     })
        AniStart(AniList, "MyCard Mouse " & Uuid)
    End Sub

    '高度改变动画
    Public Property UseAnimation As Boolean = True
    Private IsHeightAnimating As Boolean = False
    Private ActualUsedHeight As Double '回滚实际高度（例如 NaN）
    Private Sub MySizeChanged(sender As Object, e As SizeChangedEventArgs) Handles Me.SizeChanged
        If Not UseAnimation Then Exit Sub
        Dim DeltaHeight As Double = If(IsSwaped, SwapedHeight, e.NewSize.Height) - e.PreviousSize.Height
        '卡片的进入时动画已被页面通用切换动画替代
        If e.PreviousSize.Height = 0 OrElse IsHeightAnimating OrElse Math.Abs(DeltaHeight) < 1 OrElse ActualHeight = 0 Then Exit Sub
        StartHeightAnimation(DeltaHeight, e.PreviousSize.Height, False)
    End Sub
    Private Sub StartHeightAnimation(DeltaHeight As Double, PreviousHeight As Double, IsLoadAnimation As Boolean)
        If IsHeightAnimating OrElse FrmMain Is Nothing Then Exit Sub '避免 XAML 设计器出错

        Dim AnimList As New List(Of AniData)
        If DeltaHeight > 10 OrElse (DeltaHeight < -10 AndAlso Not IsNothing(SwapControl)) Then '如果不是需要折叠的卡片，高度减小时的弹跳会吞掉按钮下边框
            '高度增加较大，使用弹起动画
            Dim Delta As Double = MathRange(Math.Abs(DeltaHeight) * 0.05, 3, 10) * Math.Sign(DeltaHeight)
            AnimList.AddRange({
                     AaHeight(Me, DeltaHeight + Delta, 300, If(IsLoadAnimation, 30, 0), If(DeltaHeight > FrmMain.Height, New AniEaseInFluent(AniEasePower.ExtraStrong), New AniEaseOutFluent(AniEasePower.ExtraStrong))),
                     AaHeight(Me, -Delta, 150, 260, Ease:=New AniEaseOutFluent(AniEasePower.Strong))
                })
        Else
            '普通的改变就行啦
            AnimList.AddRange({
                         AaHeight(Me, DeltaHeight, MathRange(Math.Abs(DeltaHeight) * 4, 150, 250),, New AniEaseOutFluent)
                    })
        End If
        AnimList.Add(AaCode(Sub()
                                IsHeightAnimating = False
                                Height = ActualUsedHeight
                                If IsSwaped Then SwapControl.Visibility = Visibility.Collapsed
                            End Sub,, True))
        AniStart(AnimList, "MyCard Height " & Uuid)

        IsHeightAnimating = True
        ActualUsedHeight = If(IsSwaped, SwapedHeight, Height)
        Height = PreviousHeight
    End Sub
    ''' <summary>
    ''' 通知 MyCard，控件内容已改变，需要中断动画并更新高度。
    ''' </summary>
    Public Sub TriggerForceResize()
        Height = If(IsSwaped, SwapedHeight, Double.NaN)
        AniStop("MyCard Height " & Uuid)
        IsHeightAnimating = False
    End Sub

    '折叠
    '若设置了 CanSwap，或 SwapControl 不为空，则判定为会进行折叠
    '这是因为不能直接在 XAML 中设置 SwapControl
    Public SwapControl As Object
    Public Property CanSwap As Boolean = False
    ''' <summary>
    ''' 被折叠的种类，用于控件虚拟化。
    ''' </summary>
    Public Property SwapType As Integer
    ''' <summary>
    ''' 是否已被折叠。
    ''' </summary>
    Public Property IsSwaped As Boolean
        Get
            Return _IsSwaped
        End Get
        Set(ByVal value As Boolean)
            If _IsSwaped = value Then Exit Property
            _IsSwaped = value
            If SwapControl Is Nothing Then Exit Property
            '展开
            If Not IsSwaped AndAlso TypeOf SwapControl Is StackPanel Then StackInstall(SwapControl, SwapType, Title)
            '若尚未加载，会在 Loaded 事件中触发无动画的折叠，不需要在这里进行
            If Not IsLoaded Then Exit Property
            '更新高度
            SwapControl.Visibility = Visibility.Visible
            TriggerForceResize()
            '改变箭头
            AniStart(AaRotateTransform(MainSwap, If(_IsSwaped, If(SwapLogoRight, 270, 0), 180) - CType(MainSwap.RenderTransform, RotateTransform).Angle, 400,, New AniEaseOutBack(AniEasePower.Weak)), "MyCard Swap " & Uuid, True)
        End Set
    End Property
    Private _IsSwaped As Boolean = False

    Public Property SwapLogoRight As Boolean = False
    Private IsMouseDown As Boolean = False
    Public Event PreviewSwap(sender As Object, e As RouteEventArgs)
    Public Event Swap(sender As Object, e As RouteEventArgs)
    Public Const SwapedHeight As Integer = 40
    Private Sub MyCard_MouseLeftButtonDown(sender As Object, e As MouseButtonEventArgs) Handles Me.MouseLeftButtonDown
        Dim Pos As Double = Mouse.GetPosition(Me).Y
        If Not IsSwaped AndAlso (IsNothing(SwapControl) OrElse Pos > SwapedHeight OrElse (Pos = 0 AndAlso Not IsMouseDirectlyOver)) Then Exit Sub '检测点击位置；或已经不在可视树上的误判
        IsMouseDown = True
    End Sub
    Private Sub MyCard_MouseLeftButtonUp(sender As Object, e As MouseButtonEventArgs) Handles Me.MouseLeftButtonUp
        If IsMouseDown Then
            IsMouseDown = False
            Dim Pos As Double = Mouse.GetPosition(Me).Y
            If Not IsSwaped AndAlso (IsNothing(SwapControl) OrElse Pos > SwapedHeight OrElse (Pos = 0 AndAlso Not IsMouseDirectlyOver)) Then Exit Sub '检测点击位置；或已经不在可视树上的误判

            Dim ee = New RouteEventArgs(True)
            RaiseEvent PreviewSwap(Me, ee)
            If ee.Handled Then
                IsMouseDown = False
                Exit Sub
            End If

            IsSwaped = Not IsSwaped
            Log("[Control] " & If(IsSwaped, "折叠卡片", "展开卡片") & If(Title Is Nothing, "", "：" & Title))
            RaiseEvent Swap(Me, ee)
        End If
    End Sub
    Private Sub MyCard_MouseLeave_Swap(sender As Object, e As MouseEventArgs) Handles Me.MouseLeave
        IsMouseDown = False
    End Sub

End Class
Partial Public Module ModAnimation
    Public Sub AniDispose(Control As MyCard, RemoveFromChildren As Boolean, Optional CallBack As ParameterizedThreadStart = Nothing)
        If Control.IsHitTestVisible Then
            Control.IsHitTestVisible = False
            AniStart({
                     AaScaleTransform(Control, -0.08, 200,, New AniEaseInFluent),
                     AaOpacity(Control, -1, 200,, New AniEaseOutFluent),
                     AaHeight(Control, -Control.ActualHeight, 150, 100, New AniEaseOutFluent),
                     AaCode(Sub()
                                If RemoveFromChildren Then
                                    CType(Control.Parent, Object).Children.Remove(Control)
                                Else
                                    Control.Visibility = Visibility.Collapsed
                                End If
                                If CallBack IsNot Nothing Then CallBack(Control)
                            End Sub,, True)
            }, "MyCard Dispose " & Control.Uuid)
        Else
            If RemoveFromChildren Then
                CType(Control.Parent, Object).Children.Remove(Control)
            Else
                Control.Visibility = Visibility.Collapsed
            End If
            If CallBack IsNot Nothing Then CallBack(Control)
        End If
    End Sub
End Module