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Projektdateien hinzufügen.

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Kevin Krüger
2023-07-24 12:00:34 +02:00
parent 656751e10b
commit 0d00a90942
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VideoBrowser/Extensions/TextBoxExtension.cs Normal file
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namespace VideoBrowser.Extensions
{
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using VideoBrowser.Helpers;
/// <summary>
/// Defines the <see cref="TextBoxExtension" />.
/// </summary>
public static class TextBoxExtension
{
#region Fields
public static readonly DependencyProperty CaretIndexProperty =
DependencyProperty.RegisterAttached(nameof(CaretIndexProperty).Name(), typeof(int), typeof(TextBoxExtension), new FrameworkPropertyMetadata(0, FrameworkPropertyMetadataOptions.BindsTwoWayByDefault, OnCaretIndexChanged));
public static readonly DependencyProperty IsClickToSelectAllProperty =
DependencyProperty.RegisterAttached(nameof(IsClickToSelectAllProperty).Name(), typeof(bool), typeof(TextBoxExtension), new PropertyMetadata(false, OnIsClickToSelectAllChanged));
public static readonly DependencyProperty SelectionLengthProperty =
DependencyProperty.RegisterAttached(nameof(SelectionLengthProperty).Name(), typeof(int), typeof(TextBoxExtension), new FrameworkPropertyMetadata(0, FrameworkPropertyMetadataOptions.BindsTwoWayByDefault, OnSelectionLengthChanged));
public static readonly DependencyProperty SelectionStartProperty =
DependencyProperty.RegisterAttached(nameof(SelectionStartProperty).Name(), typeof(int), typeof(TextBoxExtension), new FrameworkPropertyMetadata(0, FrameworkPropertyMetadataOptions.BindsTwoWayByDefault, OnSelectionStartChanged));
public static readonly DependencyProperty TrackCaretIndexProperty =
DependencyProperty.RegisterAttached(nameof(TrackCaretIndexProperty).Name(), typeof(bool), typeof(TextBoxExtension), new PropertyMetadata(false, OnTrackCaretIndexChanged));
#endregion Fields
#region Methods
/// <summary>
/// The GetCaretIndex.
/// </summary>
/// <param name="obj">The obj<see cref="DependencyObject"/>.</param>
/// <returns>The <see cref="int"/>.</returns>
public static int GetCaretIndex(DependencyObject obj) => (int)obj.GetValue(CaretIndexProperty);
/// <summary>
/// The GetIsClickToSelectAll.
/// </summary>
/// <param name="obj">The obj<see cref="DependencyObject"/>.</param>
/// <returns>The <see cref="bool"/>.</returns>
public static bool GetIsClickToSelectAll(DependencyObject obj) => (bool)obj.GetValue(IsClickToSelectAllProperty);
/// <summary>
/// The GetSelectionLength.
/// </summary>
/// <param name="obj">The obj<see cref="DependencyObject"/>.</param>
/// <returns>The <see cref="int"/>.</returns>
public static int GetSelectionLength(DependencyObject obj) => (int)obj.GetValue(SelectionLengthProperty);
/// <summary>
/// The GetSelectionStart.
/// </summary>
/// <param name="obj">The obj<see cref="DependencyObject"/>.</param>
/// <returns>The <see cref="int"/>.</returns>
public static int GetSelectionStart(DependencyObject obj) => (int)obj.GetValue(SelectionStartProperty);
/// <summary>
/// The GetTrackCaretIndex.
/// </summary>
/// <param name="obj">The obj<see cref="DependencyObject"/>.</param>
/// <returns>The <see cref="bool"/>.</returns>
public static bool GetTrackCaretIndex(DependencyObject obj) => (bool)obj.GetValue(TrackCaretIndexProperty);
/// <summary>
/// The SetCaretIndex.
/// </summary>
/// <param name="obj">The obj<see cref="DependencyObject"/>.</param>
/// <param name="value">The value<see cref="int"/>.</param>
public static void SetCaretIndex(DependencyObject obj, int value) => obj.SetValue(CaretIndexProperty, value);
/// <summary>
/// The SetIsClickToSelectAll.
/// </summary>
/// <param name="obj">The obj<see cref="DependencyObject"/>.</param>
/// <param name="value">The value<see cref="bool"/>.</param>
public static void SetIsClickToSelectAll(DependencyObject obj, bool value) => obj.SetValue(IsClickToSelectAllProperty, value);
/// <summary>
/// The SetSelectionLength.
/// </summary>
/// <param name="obj">The obj<see cref="DependencyObject"/>.</param>
/// <param name="value">The value<see cref="int"/>.</param>
public static void SetSelectionLength(DependencyObject obj, int value) => obj.SetValue(SelectionLengthProperty, value);
/// <summary>
/// The SetSelectionStart.
/// </summary>
/// <param name="obj">The obj<see cref="DependencyObject"/>.</param>
/// <param name="value">The value<see cref="int"/>.</param>
public static void SetSelectionStart(DependencyObject obj, int value) => obj.SetValue(SelectionStartProperty, value);
/// <summary>
/// The SetTrackCaretIndex.
/// </summary>
/// <param name="obj">The obj<see cref="DependencyObject"/>.</param>
/// <param name="value">The value<see cref="bool"/>.</param>
public static void SetTrackCaretIndex(DependencyObject obj, bool value) => obj.SetValue(TrackCaretIndexProperty, value);
/// <summary>
/// The OnCaretIndexChanged.
/// </summary>
/// <param name="d">The d<see cref="DependencyObject"/>.</param>
/// <param name="e">The e<see cref="DependencyPropertyChangedEventArgs"/>.</param>
private static void OnCaretIndexChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (!(d is TextBox textbox))
{
return;
}
var caretIndex = (int)e.NewValue;
if (textbox.CaretIndex != caretIndex)
{
textbox.CaretIndex = caretIndex;
}
}
/// <summary>
/// The OnIsClickToSelectAllChanged.
/// </summary>
/// <param name="d">The d<see cref="DependencyObject"/>.</param>
/// <param name="e">The e<see cref="DependencyPropertyChangedEventArgs"/>.</param>
private static void OnIsClickToSelectAllChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (!(d is TextBox textbox))
{
return;
}
var oldValue = (bool)e.OldValue;
var newValue = (bool)e.NewValue;
if (!oldValue && newValue) // If changed from false to true
{
textbox.PreviewMouseLeftButtonDown += OnTextbox_PreviewMouseLeftButtonDown;
textbox.MouseDoubleClick += OnTextbox_MouseDoubleClick;
}
else if (oldValue && !newValue) // If changed from true to false
{
textbox.PreviewMouseLeftButtonDown -= OnTextbox_PreviewMouseLeftButtonDown;
textbox.MouseDoubleClick -= OnTextbox_MouseDoubleClick;
}
}
/// <summary>
/// The OnSelectionChanged.
/// </summary>
/// <param name="sender">The sender<see cref="object"/>.</param>
/// <param name="e">The e<see cref="RoutedEventArgs"/>.</param>
private static void OnSelectionChanged(object sender, RoutedEventArgs e)
{
if (sender is TextBox textbox)
{
SetCaretIndex(textbox, textbox.CaretIndex);
SetSelectionStart(textbox, textbox.SelectionStart);
SetSelectionLength(textbox, textbox.SelectionLength);
}
}
/// <summary>
/// The OnSelectionLengthChanged.
/// </summary>
/// <param name="d">The d<see cref="DependencyObject"/>.</param>
/// <param name="e">The e<see cref="DependencyPropertyChangedEventArgs"/>.</param>
private static void OnSelectionLengthChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (!(d is TextBox textbox))
{
return;
}
var selectionLength = (int)e.NewValue;
if (textbox.SelectionLength != selectionLength)
{
textbox.SelectionLength = selectionLength;
}
}
/// <summary>
/// The OnSelectionStartChanged.
/// </summary>
/// <param name="d">The d<see cref="DependencyObject"/>.</param>
/// <param name="e">The e<see cref="DependencyPropertyChangedEventArgs"/>.</param>
private static void OnSelectionStartChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (!(d is TextBox textbox))
{
return;
}
var selectionStart = (int)e.NewValue;
if (textbox.SelectionStart != selectionStart)
{
textbox.SelectionStart = selectionStart;
}
}
/// <summary>
/// The OnTextbox_MouseDoubleClick.
/// </summary>
/// <param name="sender">The sender<see cref="object"/>.</param>
/// <param name="e">The e<see cref="MouseButtonEventArgs"/>.</param>
private static void OnTextbox_MouseDoubleClick(object sender, MouseButtonEventArgs e)
{
if (!(sender is TextBox textbox))
{
return;
}
UIThreadHelper.DelayedInvokeAsync(() =>
{
textbox.Focus();
textbox.SelectAll();
}, 200);
}
/// <summary>
/// The OnTextbox_PreviewMouseLeftButtonDown.
/// </summary>
/// <param name="sender">The sender<see cref="object"/>.</param>
/// <param name="e">The e<see cref="MouseButtonEventArgs"/>.</param>
private static void OnTextbox_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
if (!(sender is TextBox textbox))
{
return;
}
if (!textbox.IsFocused)
{
UIThreadHelper.DelayedInvokeAsync(() =>
{
textbox.Focus();
textbox.SelectAll();
}, 200);
}
}
/// <summary>
/// The OnTrackCaretIndexChanged.
/// </summary>
/// <param name="d">The d<see cref="DependencyObject"/>.</param>
/// <param name="e">The e<see cref="DependencyPropertyChangedEventArgs"/>.</param>
private static void OnTrackCaretIndexChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (!(d is TextBox textbox))
{
return;
}
var oldValue = (bool)e.OldValue;
var newValue = (bool)e.NewValue;
if (!oldValue && newValue) // If changed from false to true
{
textbox.SelectionChanged += OnSelectionChanged;
}
else if (oldValue && !newValue) // If changed from true to false
{
textbox.SelectionChanged -= OnSelectionChanged;
}
}
#endregion Methods
}
}