Imports System.Windows.Forms
Imports PCL.Core.Utils
Imports PCL.Core.Utils.Exts

Public Class MyLocalCompItem

#Region "基础属性"
    Public Uuid As Integer = GetUuid()

    'Logo
    Public Property Logo As String
        Get
            Return PathLogo.Source
        End Get
        Set(value As String)
            PathLogo.Source = value
        End Set
    End Property

    '标题
    Private _Title As String
    Public Property Title As String
        Get
            Return _Title
        End Get
        Set(value As String)
            Dim RawValue = value
            Select Case Entry.State
                Case LocalCompFile.LocalFileStatus.Fine
                    LabTitle.TextDecorations = Nothing
                Case LocalCompFile.LocalFileStatus.Disabled
                    LabTitle.TextDecorations = TextDecorations.Strikethrough
                Case LocalCompFile.LocalFileStatus.Unavailable
                    LabTitle.TextDecorations = TextDecorations.Strikethrough
                    value &= " [错误]"
            End Select
            If LabTitle.Text = value Then Return
            LabTitle.Text = value
            _Title = RawValue
        End Set
    End Property

    '副标题
    Public Property SubTitle As String
        Get
            Return If(LabSubtitle?.Text, "")
        End Get
        Set(value As String)
            If LabSubtitle.Text = value Then Return
            LabSubtitle.Text = value
            LabSubtitle.Visibility = If(value = "", Visibility.Collapsed, Visibility.Visible)
        End Set
    End Property

    '描述
    Public Property Description As String
        Get
            Return LabInfo.Text
        End Get
        Set(value As String)
            If LabInfo.Text = value Then Return
            LabInfo.Text = value
        End Set
    End Property

    'Tag
    Public WriteOnly Property Tags As List(Of String)
        Set(value As List(Of String))
            PanTags.Children.Clear()
            PanTags.Visibility = If(value.Any(), Visibility.Visible, Visibility.Collapsed)
            For Each TagText In value
                Dim NewTag As New Border With {
                    .Background = New SolidColorBrush(Color.FromArgb(12, 0, 0, 0)),
                    .Padding = New Thickness(3, 1, 3, 1),
                    .CornerRadius = New CornerRadius(3),
                    .Margin = New Thickness(0, 0, 3, 0),
                    .SnapsToDevicePixels = True,
                    .UseLayoutRounding = False
                }
                Dim TagTextBlock As New TextBlock With {
                    .Text = TagText,
                    .Foreground = New SolidColorBrush(If(IsDarkMode, Color.FromArgb(88, 255, 255, 255), Color.FromArgb(88, 136, 136, 136))),
                    .FontSize = 11
                }
                NewTag.Child = TagTextBlock
                PanTags.Children.Add(NewTag)
            Next
        End Set
    End Property

    '相关联的 Mod
    Public Property Entry As LocalCompFile
        Get
            Return Tag
        End Get
        Set(value As LocalCompFile)
            Tag = value
        End Set
    End Property

#End Region

#Region "点击与勾选"

    '触发点击事件
    Public Event Click(sender As Object, e As MouseButtonEventArgs)
    Private Sub Button_MouseUp(sender As Object, e As MouseButtonEventArgs) Handles Me.PreviewMouseLeftButtonUp
        If IsMouseDown Then
            RaiseEvent Click(sender, e)
            If e.Handled Then Return
            Log("[Control] 按下本地 Mod 列表项：" & LabTitle.Text)
        End If
    End Sub

    '鼠标点击判定
    Private IsMouseDown As Boolean = False
    Private Sub Button_MouseDown(sender As Object, e As MouseButtonEventArgs) Handles Me.PreviewMouseLeftButtonDown
        If Not IsMouseDirectlyOver Then Return
        IsMouseDown = True
        If ButtonStack IsNot Nothing Then ButtonStack.IsHitTestVisible = False
    End Sub
    Private Sub Button_MouseLeave(sender As Object, e As Object) Handles Me.MouseLeave, Me.PreviewMouseLeftButtonUp
        IsMouseDown = False
        If ButtonStack IsNot Nothing Then ButtonStack.IsHitTestVisible = True
    End Sub

    '滑动选中
    Public Class SwipeSelect
        Public Property Start As Integer
        Public Property [End] As Integer
        Private _Swiping As Boolean = False
        Public Property Swiping As Boolean
            Get
                Return _Swiping
            End Get
            Set(value As Boolean)
                _Swiping = value
                TargetFrm.CardSelect.IsHitTestVisible = Not value
            End Set
        End Property
        Public Property SwipeToState As Boolean
        Public Property TargetFrm As PageInstanceCompResource
    End Class

    Public Property CurrentSwipe As SwipeSelect

    Private Sub Button_MouseSwipeStart(sender As Object, e As Object) Handles Me.MouseLeftButtonDown
        If Parent Is Nothing Then Return 'Mod 可能已被删除（#3824）
        '开始滑动
        Dim Index = CType(Parent, StackPanel).Children.IndexOf(Me)
        CurrentSwipe.Start = Index
        CurrentSwipe.End = Index
        CurrentSwipe.Swiping = True
        CurrentSwipe.SwipeToState = Not Checked
    End Sub
    Private Sub Button_MouseSwipe(sender As Object, e As Object) Handles Me.MouseEnter, Me.MouseLeave, Me.MouseLeftButtonUp
        If Parent Is Nothing Then Return 'Mod 可能已被删除（#3824）
        '结束滑动
        If Mouse.LeftButton <> MouseButtonState.Pressed OrElse
           TypeOf Mouse.DirectlyOver IsNot MyLocalCompItem Then '#5771
            CurrentSwipe.Swiping = False
            Return
        End If
        '计算滑动范围
        Dim Elements = CType(Parent, StackPanel).Children
        Dim Index As Integer = Elements.IndexOf(Me)
        CurrentSwipe.Start = MathClamp(Math.Min(CurrentSwipe.Start, Index), 0, Elements.Count - 1)
        CurrentSwipe.End = MathClamp(Math.Max(CurrentSwipe.End, Index), 0, Elements.Count - 1)
        '勾选所有范围中的项
        If CurrentSwipe.Start = CurrentSwipe.End Then Return
        For i = CurrentSwipe.Start To CurrentSwipe.End
            Dim Item As MyLocalCompItem = Elements(i)
            Item.InitLate(Item, e)
            Item.Checked = CurrentSwipe.SwipeToState
        Next
    End Sub

    '勾选状态
    Public Event Check(sender As Object, e As RouteEventArgs)
    Public Event Changed(sender As Object, e As RouteEventArgs)
    Private _Checked As Boolean = False
    Public Property Checked As Boolean
        Get
            Return _Checked
        End Get
        Set(value As Boolean)
            Try
                '触发属性值修改
                Dim RawValue = _Checked
                If value = _Checked Then Return
                _Checked = value
                Dim ChangedEventArgs As New RouteEventArgs(False)
                If IsInitialized Then
                    RaiseEvent Changed(Me, ChangedEventArgs)
                    If ChangedEventArgs.Handled Then
                        _Checked = RawValue
                        Return
                    End If
                End If
                If value Then
                    Dim CheckEventArgs As New RouteEventArgs(False)
                    RaiseEvent Check(Me, CheckEventArgs)
                    If CheckEventArgs.Handled Then Return
                End If
                '更改动画
                If IsVisibleInWindow(FrmMain) Then
                    Dim Anim As New List(Of AniData)
                    If Checked Then
                        '由无变有
                        Dim Delta = 32 - RectCheck.ActualHeight
                        Anim.Add(AaHeight(RectCheck, Delta * 0.4, 200,, New AniEaseOutFluent(AniEasePower.Weak)))
                        Anim.Add(AaHeight(RectCheck, Delta * 0.6, 300,, New AniEaseOutBack(AniEasePower.Weak)))
                        Anim.Add(AaOpacity(RectCheck, 1 - RectCheck.Opacity, 30))
                        RectCheck.VerticalAlignment = VerticalAlignment.Center
                        RectCheck.Margin = New Thickness(-3, 0, 0, 0)
                        Anim.Add(AaColor(LabTitle, TextBlock.ForegroundProperty, If(Entry.State = LocalCompFile.LocalFileStatus.Fine, "ColorBrush2", "ColorBrush5"), 200))
                    Else
                        '由有变无
                        Anim.Add(AaHeight(RectCheck, -RectCheck.ActualHeight, 120,, New AniEaseInFluent(AniEasePower.Weak)))
                        Anim.Add(AaOpacity(RectCheck, -RectCheck.Opacity, 70, 40))
                        RectCheck.VerticalAlignment = VerticalAlignment.Center
                        Anim.Add(AaColor(LabTitle, TextBlock.ForegroundProperty, If(LabTitle.TextDecorations Is Nothing, "ColorBrush1", "ColorBrushGray4"), 120))
                    End If
                    AniStart(Anim, "MyLocalCompItem Checked " & Uuid)
                Else
                    '不在窗口上时直接设置
                    RectCheck.VerticalAlignment = VerticalAlignment.Center
                    RectCheck.Margin = New Thickness(-3, 0, 0, 0)
                    If Checked Then
                        RectCheck.Height = 32
                        RectCheck.Opacity = 1
                        LabTitle.SetResourceReference(TextBlock.ForegroundProperty, If(Entry.State = LocalCompFile.LocalFileStatus.Fine, "ColorBrush2", "ColorBrush5"))
                    Else
                        RectCheck.Height = 0
                        RectCheck.Opacity = 0
                        LabTitle.SetResourceReference(TextBlock.ForegroundProperty, If(Entry.State = LocalCompFile.LocalFileStatus.Fine, "ColorBrush1", "ColorBrushGray4"))
                    End If
                    AniStop("MyLocalCompItem Checked " & Uuid)
                End If
            Catch ex As Exception
                Log(ex, "设置 Checked 失败")
            End Try
        End Set
    End Property


#End Region

#Region "后加载内容"

    '右下角状态指示图标
    Private ImgState As Image

    '指向背景
    Private _RectBack As Border = Nothing
    Public ReadOnly Property RectBack As Border
        Get
            If _RectBack Is Nothing Then
                Dim Rect As New Border With {
                    .Name = "RectBack",
                    .CornerRadius = New CornerRadius(3),
                    .RenderTransform = New ScaleTransform(0.8, 0.8),
                    .RenderTransformOrigin = New Point(0.5, 0.5),
                    .BorderThickness = New Thickness(GetWPFSize(1)),
                    .SnapsToDevicePixels = True,
                    .IsHitTestVisible = False,
                    .Opacity = 0
                }
                Rect.SetResourceReference(Border.BackgroundProperty, "ColorBrush7")
                Rect.SetResourceReference(Border.BorderBrushProperty, "ColorBrush6")
                SetColumnSpan(Rect, 999)
                SetRowSpan(Rect, 999)
                Children.Insert(0, Rect)
                _RectBack = Rect
                '<!--<corelocal:BlurBorder x:Name = "RectBack" CornerRadius="3" RenderTransformOrigin="0.5,0.5" SnapsToDevicePixels="True" 
                'IsHitTestVisible = "False" Opacity="0" BorderThickness="1" 
                'Grid.ColumnSpan = "4" Background="{DynamicResource ColorBrush7}" BorderBrush="{DynamicResource ColorBrush6}"/>-->
            End If
            Return _RectBack
        End Get
    End Property

    '按钮
    Public ButtonHandler As Action(Of MyLocalCompItem, EventArgs)
    Public ButtonStack As FrameworkElement
    Private _Buttons As IEnumerable(Of MyIconButton)
    Public Property Buttons As IEnumerable(Of MyIconButton)
        Get
            Return _Buttons
        End Get
        Set(value As IEnumerable(Of MyIconButton))
            _Buttons = value
            '移除原 Stack
            If ButtonStack IsNot Nothing Then
                Children.Remove(ButtonStack)
                ButtonStack = Nothing
            End If
            If Not value.Any() Then Return
            '添加新 Stack
            ButtonStack = New StackPanel With {.Opacity = 0, .Margin = New Thickness(0, 0, 5, 0), .SnapsToDevicePixels = False, .Orientation = Orientation.Horizontal,
                .HorizontalAlignment = HorizontalAlignment.Right, .VerticalAlignment = VerticalAlignment.Center, .UseLayoutRounding = False}
            SetColumnSpan(ButtonStack, 10) : SetRowSpan(ButtonStack, 10)
            '构造按钮
            For Each Btn As MyIconButton In value
                If Btn.Height.Equals(Double.NaN) Then Btn.Height = 25
                If Btn.Width.Equals(Double.NaN) Then Btn.Width = 25
                CType(ButtonStack, StackPanel).Children.Add(Btn)
            Next
            Children.Add(ButtonStack)
        End Set
    End Property

    '勾选条
    Private _RectCheck As Border
    Public ReadOnly Property RectCheck As Border
        Get
            If _RectCheck Is Nothing Then
                _RectCheck = New Border With {.Width = 5, .Height = If(Checked, Double.NaN, 0), .CornerRadius = New CornerRadius(2, 2, 2, 2),
                    .VerticalAlignment = If(Checked, VerticalAlignment.Stretch, VerticalAlignment.Center),
                    .HorizontalAlignment = HorizontalAlignment.Left, .UseLayoutRounding = False, .SnapsToDevicePixels = False,
                    .Margin = If(Checked, New Thickness(-3, 6, 0, 6), New Thickness(-3, 0, 0, 0))}
                _RectCheck.SetResourceReference(Border.BackgroundProperty, "ColorBrush3")
                SetRowSpan(_RectCheck, 10)
                Children.Add(_RectCheck)
            End If
            Return _RectCheck
        End Get
    End Property

#End Region

    Private Function GetUpdateCompareDescription() As String
        Dim CurrentName = Entry.CompFile.FileName.Replace(".jar", "")
        Dim NewestName = Entry.UpdateFile.FileName.Replace(".jar", "")
        '简化名称对比
        Dim CurrentSegs = CurrentName.Split("-"c).ToList()
        Dim NewestSegs = NewestName.Split("-"c).ToList()
        Dim Shortened As Boolean = False
        For Each Seg In CurrentSegs.ToList()
            If Not NewestSegs.Contains(Seg) Then Continue For
            CurrentSegs.Remove(Seg)
            NewestSegs.Remove(Seg)
            Shortened = True
        Next
        If Shortened AndAlso CurrentSegs.Any() AndAlso NewestSegs.Any() Then
            CurrentName = Join(CurrentSegs, "-")
            NewestName = Join(NewestSegs, "-")
            Entry._Version = CurrentName '使用网络信息作为显示的版本号
        End If
        Return $"当前版本：{CurrentName}（{TimeUtils.GetTimeSpanString(Entry.CompFile.ReleaseDate - Date.Now, False)}）{vbCrLf}最新版本：{NewestName}（{TimeUtils.GetTimeSpanString(Entry.UpdateFile.ReleaseDate - Date.Now, False)}）"
    End Function
    Public Sub Refresh() Handles Me.Loaded
        Dispatcher.BeginInvoke(Async Function() As Task
            '更新
            If Entry.CanUpdate Then
                BtnUpdate.Visibility = Visibility.Visible
                BtnUpdate.ToolTip = $"{GetUpdateCompareDescription()}{vbCrLf}点击以更新，右键查看更新日志。"
            Else
                BtnUpdate.Visibility = Visibility.Collapsed
            End If
            '标题与描述
            Dim DescFileName As String
            If Entry.IsFolder Then
                '文件夹项的特殊处理
                DescFileName = Entry.Name
            Else
                Select Case Entry.State
                    Case LocalCompFile.LocalFileStatus.Fine
                        DescFileName = GetFileNameWithoutExtentionFromPath(Entry.Path)
                    Case LocalCompFile.LocalFileStatus.Disabled
                        DescFileName = GetFileNameWithoutExtentionFromPath(Entry.Path.Replace(".disabled", "").Replace(".old", ""))
                    Case Else 'McMod.McModState.Unavailable
                        DescFileName = GetFileNameFromPath(Entry.Path)
                End Select
            End If
            Dim NewDescription As String
            Dim compTemp = Entry.Comp
            If Entry.IsFolder Then
                '文件夹项的特殊显示
                Title = Entry.Name
                NewDescription = Entry.Description
            ElseIf Setup.Get("ToolModLocalNameStyle") = 1 Then
                '标题显示文件名，详情显示译名
                '标题
                Title = DescFileName
                SubTitle = ""
                '描述
                If Entry.Comp Is Nothing Then
                    NewDescription = Entry.Name
                Else
                    Dim Titles = Await Task.Run(Function() compTemp.GetControlTitle(False))
                    NewDescription = Titles.Key & Titles.Value
                End If
                NewDescription = NewDescription.Replace("  |  ", " / ")
                If Entry.Version IsNot Nothing Then NewDescription &= $" ({Entry.Version})"
            Else
                '标题显示译名，详情显示文件名
                '标题
                If Entry.Comp Is Nothing Then
                    Title = Entry.Name
                    SubTitle = If(Entry.Version Is Nothing, "", "  |  " & Entry.Version)
                Else
                    Dim Titles = Await Task.Run(Function() compTemp.GetControlTitle(False))
                    Title = Titles.Key
                    SubTitle = Titles.Value & If(Entry.Version Is Nothing, "", "  |  " & Entry.Version)
                End If
                '描述
                NewDescription = DescFileName
            End If
            If Entry.Comp IsNot Nothing Then
                NewDescription += ": " & Entry.Comp.Description.Replace(vbCr, "").Replace(vbLf, "")
            ElseIf Entry.Description IsNot Nothing Then
                NewDescription += ": " & Entry.Description.Replace(vbCr, "").Replace(vbLf, "")
            ElseIf Not Entry.IsFileAvailable Then
                NewDescription += ": " & "存在错误，无法获取信息"
            End If
            Description = NewDescription
            If Checked Then
                LabTitle.SetResourceReference(TextBlock.ForegroundProperty, If(Entry.State = LocalCompFile.LocalFileStatus.Fine, "ColorBrush2", "ColorBrush5"))
            Else
                LabTitle.SetResourceReference(TextBlock.ForegroundProperty, If(Entry.State = LocalCompFile.LocalFileStatus.Fine, "ColorBrush1", "ColorBrushGray4"))
            End If
            '主 Logo
             Logo = Entry.GetLogo

            '图标右下角的 Logo
            If Entry.State = LocalCompFile.LocalFileStatus.Fine Then
                If ImgState IsNot Nothing Then
                    Children.Remove(ImgState)
                    ImgState = Nothing
                End If
            Else
                If ImgState Is Nothing Then
                    ImgState = New Image With {
                        .Width = 20, .Height = 20, .Margin = New Thickness(0, 0, -5, -3), .IsHitTestVisible = False,
                        .HorizontalAlignment = HorizontalAlignment.Right, .VerticalAlignment = VerticalAlignment.Bottom
                    }
                    RenderOptions.SetBitmapScalingMode(ImgState, BitmapScalingMode.HighQuality)
                    SetColumn(ImgState, 1) : SetRow(ImgState, 1) : SetRowSpan(ImgState, 2)
                    Children.Add(ImgState)
                    '<Image x:Name="ImgState" RenderOptions.BitmapScalingMode="HighQuality" Width="16" Height="16" Margin="0,0,-3,-1"
                    '       Grid.Column="1" Grid.Row="1" Grid.RowSpan="2" IsHitTestVisible="False"
                    '       HorizontalAlignment="Right" VerticalAlignment="Bottom"
                    '       Source="/Images/Icons/Unavailable.png" />
                End If
                ImgState.Source = New MyBitmap(PathImage & $"Icons/{Entry.State}.png")
            End If
            '标签
            If Entry.IsFolder Then
                ' 为文件夹添加标签
                Tags = New List(Of String) From {"文件夹"}
            ElseIf Entry.Comp IsNot Nothing Then
                Tags = Entry.Comp.Tags
            End If
        End Function)
    End Sub

    Public Sub RefreshColor(sender As Object, e As EventArgs) Handles Me.MouseEnter, Me.MouseLeave, Me.MouseLeftButtonDown, Me.MouseLeftButtonUp, Me.Changed
        InitLate(sender, e)
        '触发颜色动画
        Dim Time As Integer = If(IsMouseOver, 120, 180)
        Dim Ani As New List(Of AniData)
        'ButtonStack
        If ButtonStack IsNot Nothing Then
            If IsMouseOver Then
                Ani.Add(AaOpacity(ButtonStack, 1 - ButtonStack.Opacity, Time * 0.7, Time * 0.3))
                Ani.Add(AaDouble(Sub(i) ColumnPaddingRight.Width = New GridLength(Math.Max(0, ColumnPaddingRight.Width.Value + i)),
                    5 + Buttons.Count * 25 - ColumnPaddingRight.Width.Value, Time * 0.3, Time * 0.7))
            Else
                Ani.Add(AaOpacity(ButtonStack, -ButtonStack.Opacity, Time * 0.4))
                Ani.Add(AaDouble(Sub(i) ColumnPaddingRight.Width = New GridLength(Math.Max(0, ColumnPaddingRight.Width.Value + i)),
                    4 - ColumnPaddingRight.Width.Value, Time * 0.4))
            End If
        End If
        'RectBack
        If IsMouseOver OrElse Checked Then
            Ani.AddRange({
                AaColor(RectBack, Border.BackgroundProperty, If(IsMouseDown, "ColorBrush6", "ColorBrushBg1"), Time),
                AaOpacity(RectBack, 1 - RectBack.Opacity, Time,, New AniEaseOutFluent)
            })
            If IsMouseDown Then
                Ani.Add(AaScaleTransform(RectBack, 0.996 - CType(RectBack.RenderTransform, ScaleTransform).ScaleX, Time * 1.2,, New AniEaseOutFluent))
            Else
                Ani.Add(AaScaleTransform(RectBack, 1 - CType(RectBack.RenderTransform, ScaleTransform).ScaleX, Time * 1.2,, New AniEaseOutFluent))
            End If
        Else
            Ani.AddRange({
                AaOpacity(RectBack, -RectBack.Opacity, Time),
                AaScaleTransform(RectBack, 0.996 - CType(RectBack.RenderTransform, ScaleTransform).ScaleX, Time,, New AniEaseOutFluent),
                AaScaleTransform(RectBack, -0.196, 1,,, True)
            })
        End If
        AniStart(Ani, "LocalModItem Color " & Uuid)
    End Sub

    '触发虚拟化内容
    Private Sub InitLate(sender As Object, e As EventArgs)
        If ButtonHandler IsNot Nothing Then
            ButtonHandler(sender, e)
            ButtonHandler = Nothing
        End If
    End Sub

    '显示更新日志
    Private Sub BtnUpdate_PreviewMouseRightButtonUp(sender As Object, e As MouseButtonEventArgs) Handles BtnUpdate.PreviewMouseRightButtonUp
        e.Handled = True
        ShowUpdateLog()
    End Sub
    Private Sub ShowUpdateLog()
        Dim CurseForgeUrl As String = Entry.ChangelogUrls.FirstOrDefault(Function(x) x.Contains("curseforge.com"))
        Dim ModrinthUrl As String = Entry.ChangelogUrls.FirstOrDefault(Function(x) x.Contains("modrinth.com"))
        If CurseForgeUrl Is Nothing OrElse ModrinthUrl Is Nothing Then
            OpenWebsite(Entry.ChangelogUrls.First)
        Else
            Select Case MyMsgBox("要在哪个网站上查看更新日志？", "查看更新日志", "Modrinth", "CurseForge", "取消")
                Case 1
                    OpenWebsite(ModrinthUrl)
                Case 2
                    OpenWebsite(CurseForgeUrl)
            End Select
        End If
    End Sub

    '触发更新
    Private Sub BtnUpdate_Click(sender As Object, e As EventArgs) Handles BtnUpdate.Click
        Select Case MyMsgBox($"是否要更新 {Entry.Name}？{vbCrLf}{vbCrLf}{GetUpdateCompareDescription()}", "更新确认", "更新", "查看更新日志", "取消")
            Case 1 '更新
                Select Case Entry.Comp.Type
                    Case CompType.Mod : FrmInstanceMod.UpdateResource({Entry})
                    Case CompType.ResourcePack : FrmInstanceResourcePack.UpdateResource({Entry})
                    Case CompType.Shader : FrmInstanceShader.UpdateResource({Entry})
                End Select
            Case 2 '查看更新日志
                ShowUpdateLog()
            Case 3 '取消
        End Select
    End Sub

    '自适应（#4465）
    Private Sub PanTitle_SizeChanged() Handles PanTitle.SizeChanged
        '0：全部舒展：Auto - Auto - (Auto) - 1*
        '1：压缩 Subtitle：Auto - 1* - (Auto) - 0
        '2：继续压缩 Title：1* - 0 - (Auto) - 0
        Dim CurrentCompressLevel As Integer =
            If(ColumnExtend.Width.IsStar, 0, If(ColumnTitle.Width.IsStar, 2, 1)) 'Subtitle 可能是 Collapsed
        Dim NewCompressLevel As Integer
        Select Case CurrentCompressLevel
            Case 0
                If ColumnExtend.ActualWidth < 0.5 Then
                    NewCompressLevel = If(LabSubtitle.Visibility = Visibility.Collapsed, 2, 1)
                Else
                    Return
                End If
            Case 1
                If ColumnSubtitle.ActualWidth < 0.5 Then
                    NewCompressLevel = 2
                ElseIf Not LabSubtitle.IsTextTrimmed() Then
                    NewCompressLevel = 0
                Else
                    Return
                End If
            Case 2
                If Not LabTitle.IsTextTrimmed() Then
                    NewCompressLevel = If(LabSubtitle.Visibility = Visibility.Collapsed, 0, 1)
                Else
                    Return
                End If
        End Select
        Select Case NewCompressLevel
            Case 0
                '全部舒展：Auto - Auto - (Auto) - 1*
                ColumnTitle.Width = GridLength.Auto
                ColumnSubtitle.Width = GridLength.Auto
                ColumnExtend.Width = New GridLength(1, GridUnitType.Star)
            Case 1
                '压缩 Subtitle：Auto - 1* - (Auto) - 0
                ColumnTitle.Width = GridLength.Auto
                ColumnSubtitle.Width = New GridLength(1, GridUnitType.Star)
                ColumnExtend.Width = New GridLength(0, GridUnitType.Pixel)
            Case 2
                '继续压缩 Title：1* - 0 - (Auto) - 0
                ColumnTitle.Width = New GridLength(1, GridUnitType.Star)
                ColumnSubtitle.Width = New GridLength(0, GridUnitType.Pixel)
                ColumnExtend.Width = New GridLength(0, GridUnitType.Pixel)
        End Select
    End Sub

End Class
