299 lines
12 KiB
VB.net
299 lines
12 KiB
VB.net
Public Class MyTextBox
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Inherits TextBox
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'自定义属性
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Public Property HasBackground As Boolean = True
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Public Property ShowValidateResult As Boolean = True
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Public Property CornerRadius As CornerRadius
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Get
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Return GetValue(CornerRadiusProperty)
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End Get
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Set(value As CornerRadius)
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SetValue(CornerRadiusProperty, value)
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End Set
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End Property
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Public Shared ReadOnly CornerRadiusProperty As DependencyProperty =
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DependencyProperty.Register("CornerRadius", GetType(CornerRadius), GetType(MyTextBox), New PropertyMetadata(New CornerRadius(3)))
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'额外控件初始化
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Private _labWrong As TextBlock = Nothing
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Private ReadOnly Property labWrong As TextBlock
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Get
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If Template Is Nothing Then Return Nothing
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If _labWrong Is Nothing Then _labWrong = Template.FindName("labWrong", Me)
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Return _labWrong
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End Get
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End Property
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Private _labHint As TextBlock = Nothing
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Private ReadOnly Property labHint As TextBlock
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Get
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If Template Is Nothing Then Return Nothing
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If _labHint Is Nothing Then _labHint = Template.FindName("labHint", Me)
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Return _labHint
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End Get
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End Property
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Public Overrides Sub OnApplyTemplate()
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MyBase.OnApplyTemplate()
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If HintText = "" OrElse labHint.Text <> "" Then Return
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labHint.Text = If(Text = "", HintText, "")
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End Sub
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'事件
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Public Uuid As Integer = GetUuid()
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Public Shared Event ValidateChanged(sender As Object, e As EventArgs)
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Public ChangedEventList As New List(Of RoutedEventHandler)
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Public Custom Event ValidatedTextChanged As RoutedEventHandler
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AddHandler(value As RoutedEventHandler)
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ChangedEventList.Add(value)
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End AddHandler
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RemoveHandler(value As RoutedEventHandler)
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ChangedEventList.Remove(value)
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End RemoveHandler
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RaiseEvent(sender As Object, e As TextChangedEventArgs)
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For Each handler As RoutedEventHandler In ChangedEventList
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If Not IsNothing(handler) Then handler.Invoke(sender, e)
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Next
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End RaiseEvent
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End Event
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'输入验证
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''' <summary>
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''' 输入验证结果。若为空字符串则无错误，否则为第一个错误原因。
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''' </summary>
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Public Property ValidateResult As String
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Get
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Return GetValue(ValidateResultProperty)
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End Get
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Set(value As String)
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SetValue(ValidateResultProperty, value)
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End Set
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End Property
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Public Shared ReadOnly ValidateResultProperty As DependencyProperty =
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DependencyProperty.Register("ValidateResult", GetType(String), GetType(MyTextBox), New PropertyMetadata("",
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Sub(d As MyTextBox, e As DependencyPropertyChangedEventArgs)
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d.SetValue(IsValidatedPropertyKey, String.IsNullOrEmpty(e.NewValue))
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End Sub))
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''' <summary>
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''' 是否通过了输入验证。
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''' </summary>
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Public ReadOnly Property IsValidated As Boolean
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Get
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Return GetValue(IsValidatedProperty)
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End Get
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End Property
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Private Shared ReadOnly IsValidatedPropertyKey As DependencyPropertyKey =
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DependencyProperty.RegisterReadOnly("IsValidated", GetType(Boolean), GetType(MyTextBox), New PropertyMetadata(True))
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Public Shared ReadOnly IsValidatedProperty As DependencyProperty = IsValidatedPropertyKey.DependencyProperty
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''' <summary>
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''' 输入验证的规则。
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''' </summary>
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Public Property ValidateRules As ObjectModel.Collection(Of Validate)
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Get
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Return _ValidateRules
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End Get
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Set(Value As ObjectModel.Collection(Of Validate))
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_ValidateRules = Value
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Validate()
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End Set
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End Property
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Private _ValidateRules As New ObjectModel.Collection(Of Validate)
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''' <summary>
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''' 进行输入验证。
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''' </summary>
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Public Sub Validate() Handles Me.Loaded
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'执行输入验证
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ValidateResult = ModValidate.Validate(Text, ValidateRules)
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'根据结果改变样式
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If ShownValidateResult <> If(IsValidated, ValidateState.Success, ValidateState.FailedAndShowDetail) Then
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If IsLoaded AndAlso labWrong IsNot Nothing Then
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ChangeValidateResult(IsValidated, True)
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Else
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RunInNewThread(
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Sub()
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Thread.Sleep(30)
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RunInUi(Sub() ChangeValidateResult(IsValidated, False))
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End Sub, "DelayedValidate Change")
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End If
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End If
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'更新错误信息
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If ShowValidateResult AndAlso Not IsValidated Then
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If IsLoaded AndAlso labWrong IsNot Nothing Then
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labWrong.Text = ValidateResult
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Else
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RunInNewThread(
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Sub()
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Dim IsFinished As Boolean = False
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Do Until IsFinished
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Thread.Sleep(20)
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RunInUiWait(
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Sub()
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If labWrong IsNot Nothing Then
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labWrong.Text = ValidateResult
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IsFinished = True
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End If
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If Not IsLoaded Then IsFinished = True
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End Sub)
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Loop
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End Sub, "DelayedValidate Text")
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End If
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End If
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End Sub
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''' <summary>
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''' 强制显示结果为正常，类似尚未输入过文本的状态。不影响实际的检查结果。
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''' </summary>
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Public Sub ForceShowAsSuccess()
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IsTextChanged = False
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ChangeValidateResult(IsValidated, True)
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End Sub
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Private ShownValidateResult As ValidateState = ValidateState.NotInited
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Private Sub ChangeValidateResult(IsSuccessful As Boolean, IsLoaded As Boolean)
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If IsLoaded AndAlso AniControlEnabled = 0 AndAlso labWrong IsNot Nothing Then
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If IsSuccessful OrElse Not IsTextChanged Then
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'变为正确
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ShownValidateResult = If(IsSuccessful, ValidateState.Success, ValidateState.FailedButTextNotChanged)
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AniStart({
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AaOpacity(labWrong, -labWrong.Opacity, 150),
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AaHeight(labWrong, -labWrong.Height, 150,, New AniEaseOutFluent),
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AaCode(Sub() labWrong.Visibility = Visibility.Collapsed,, True)
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}, "MyTextBox Validate " & Uuid)
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ElseIf ShowValidateResult Then
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'变为错误
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ShownValidateResult = ValidateState.FailedAndShowDetail
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labWrong.Visibility = Visibility.Visible
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AniStart({
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AaOpacity(labWrong, 1 - labWrong.Opacity, 150),
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AaHeight(labWrong, 21 - labWrong.Height, 150,, New AniEaseOutFluent)
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}, "MyTextBox Validate " & Uuid)
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Else
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'变为错误，但不显示文本
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ShownValidateResult = ValidateState.FailedAndHideDetail
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End If
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Else
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ShownValidateResult = ValidateState.NotLoaded
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End If
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RefreshColor()
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RaiseEvent ValidateChanged(Me, New EventArgs)
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End Sub
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Private Enum ValidateState
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NotInited
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Success
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FailedButTextNotChanged
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FailedAndShowDetail
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FailedAndHideDetail
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NotLoaded
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End Enum
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'提示文本
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''' <summary>
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''' 是否已经由用户输入过文本，若尚未输入过，则不显示输入检查的失败。
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''' </summary>
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Private IsTextChanged As Boolean = False
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Public Property HintText As String
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Get
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Return GetValue(HintTextProperty)
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End Get
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Set(value As String)
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SetValue(HintTextProperty, value)
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End Set
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End Property
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Public Shared ReadOnly HintTextProperty As DependencyProperty =
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DependencyProperty.Register("HintText", GetType(String), GetType(MyTextBox), New PropertyMetadata("",
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Sub(t As MyTextBox, e As DependencyPropertyChangedEventArgs)
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If t.labHint IsNot Nothing Then t.labHint.Text = If(t.Text = "", t.HintText, "")
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End Sub))
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Private Sub MyTextBox_TextChanged(sender As MyTextBox, e As TextChangedEventArgs) Handles Me.TextChanged
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Try
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'改变提示文本
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If labHint IsNot Nothing Then labHint.Text = If(Text = "", HintText, "")
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'改变输入记录
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IsTextChanged = IsLoaded
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'进行输入验证
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Validate()
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If Not IsValidated Then Return
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'改变文本
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RaiseEvent ValidatedTextChanged(sender, e)
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Catch ex As Exception
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Log(ex, "进行输入验证时出错", LogLevel.Critical)
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End Try
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End Sub
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'颜色
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Private Sub RefreshColor() Handles Me.IsEnabledChanged, Me.MouseEnter, Me.MouseLeave, Me.GotFocus, Me.LostFocus
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Try
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'不对 ComboBox 从属进行动画
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If TemplatedParent IsNot Nothing AndAlso TypeOf TemplatedParent Is MyComboBox Then Return
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'判断当前颜色
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Dim ForeColorName As String, BackColorName As String
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Dim AnimationTime As Integer
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If IsEnabled Then
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If IsValidated OrElse Not IsTextChanged Then
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If IsFocused Then
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ForeColorName = "ColorBrush3"
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BackColorName = "ColorBrush7"
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AnimationTime = 10
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ElseIf IsMouseOver Then
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ForeColorName = "ColorBrush4"
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BackColorName = "ColorBrush7"
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AnimationTime = 100
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Else '未选中
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ForeColorName = "ColorBrushBg0"
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BackColorName = "ColorBrushHalfWhite"
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AnimationTime = 100
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End If
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Else
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ForeColorName = "ColorBrushRedLight"
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BackColorName = "ColorBrushRedBack"
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AnimationTime = 200
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End If
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Else
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ForeColorName = "ColorBrushGray5"
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BackColorName = "ColorBrushGray6"
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AnimationTime = 200
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End If
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If Not HasBackground Then BackColorName = "ColorBrushTransparent"
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'触发颜色动画
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If IsLoaded AndAlso AniControlEnabled = 0 Then '防止默认属性变更触发动画
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'有动画
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AniStart({
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AaColor(Me, BorderBrushProperty, ForeColorName, AnimationTime),
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AaColor(Me, BackgroundProperty, BackColorName, AnimationTime)
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}, "MyTextBox Color " & Uuid)
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Else
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'无动画
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AniStop("MyTextBox Color " & Uuid)
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SetResourceReference(BorderBrushProperty, ForeColorName)
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SetResourceReference(BackgroundProperty, BackColorName)
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End If
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Catch ex As Exception
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Log(ex, "文本框颜色改变出错")
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End Try
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End Sub
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Private Sub RefreshTextColor() Handles Me.IsEnabledChanged
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Dim NewColor As MyColor = If(IsEnabled, ColorGray1, ColorGray4)
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If CType(Foreground, SolidColorBrush).Color.R = NewColor.R Then Return
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If IsLoaded AndAlso AniControlEnabled = 0 AndAlso Not Text = "" Then
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'有动画
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AniStart({AaColor(Me, ForegroundProperty, If(IsEnabled, "ColorBrushGray1", "ColorBrushGray4"), 200)}, "MyTextBox TextColor " & Uuid)
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Else
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'无动画
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AniStop("MyTextBox TextColor " & Uuid)
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Foreground = NewColor
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End If
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End Sub
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'在按下回车时触发自定义事件
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Private Sub MyTextBox_KeyUp(sender As Object, e As KeyEventArgs) Handles Me.KeyUp
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If e.Key = Key.Enter Then RaiseCustomEvent()
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End Sub
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End Class
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