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114 changes: 114 additions & 0 deletions
114
src/AntiDuplWPF/AntiDuplWPF/Behavior/AllowableCharactersTextBoxBehavior.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,114 @@ | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Linq; | ||
| using System.Text; | ||
| using System.Text.RegularExpressions; | ||
| using System.Threading.Tasks; | ||
| using System.Windows; | ||
| using System.Windows.Controls; | ||
| using System.Windows.Input; | ||
| using System.Windows.Interactivity; | ||
|
|
||
| namespace AntiDuplWPF.Behavior | ||
| { | ||
| public class AllowableCharactersTextBoxBehavior : Behavior<TextBox> | ||
| { | ||
| public static readonly DependencyProperty RegularExpressionProperty = | ||
| DependencyProperty.Register("RegularExpression", typeof(string), typeof(AllowableCharactersTextBoxBehavior), | ||
| new FrameworkPropertyMetadata(".*")); | ||
| public string RegularExpression | ||
| { | ||
| get | ||
| { | ||
| return (string)base.GetValue(RegularExpressionProperty); | ||
| } | ||
| set | ||
| { | ||
| base.SetValue(RegularExpressionProperty, value); | ||
| } | ||
| } | ||
|
|
||
| public static readonly DependencyProperty MaxLengthProperty = | ||
| DependencyProperty.Register("MaxLength", typeof(int), typeof(AllowableCharactersTextBoxBehavior), | ||
| new FrameworkPropertyMetadata(int.MinValue)); | ||
| public int MaxLength | ||
| { | ||
| get | ||
| { | ||
| return (int)base.GetValue(MaxLengthProperty); | ||
| } | ||
| set | ||
| { | ||
| base.SetValue(MaxLengthProperty, value); | ||
| } | ||
| } | ||
|
|
||
| protected override void OnAttached() | ||
| { | ||
| base.OnAttached(); | ||
| AssociatedObject.PreviewTextInput += OnPreviewTextInput; | ||
| DataObject.AddPastingHandler(AssociatedObject, OnPaste); | ||
| } | ||
|
|
||
| private void OnPaste(object sender, DataObjectPastingEventArgs e) | ||
| { | ||
| if (e.DataObject.GetDataPresent(DataFormats.Text)) | ||
| { | ||
| string text = Convert.ToString(e.DataObject.GetData(DataFormats.Text)); | ||
|
|
||
| if (!IsValid(text, true)) | ||
| { | ||
| e.CancelCommand(); | ||
| } | ||
| } | ||
| else | ||
| { | ||
| e.CancelCommand(); | ||
| } | ||
| } | ||
|
|
||
| void OnPreviewTextInput(object sender, System.Windows.Input.TextCompositionEventArgs e) | ||
| { | ||
| e.Handled = !IsValid(e.Text, false); | ||
| } | ||
|
|
||
| protected override void OnDetaching() | ||
| { | ||
| base.OnDetaching(); | ||
| AssociatedObject.PreviewTextInput -= OnPreviewTextInput; | ||
| DataObject.RemovePastingHandler(AssociatedObject, OnPaste); | ||
| } | ||
|
|
||
| private bool IsValid(string newText, bool paste) | ||
| { | ||
| return !ExceedsMaxLength(newText, paste) && Regex.IsMatch(newText, RegularExpression); | ||
| } | ||
|
|
||
| private bool ExceedsMaxLength(string newText, bool paste) | ||
| { | ||
| if (MaxLength == 0) return false; | ||
|
|
||
| return LengthOfModifiedText(newText, paste) > MaxLength; | ||
| } | ||
|
|
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| private int LengthOfModifiedText(string newText, bool paste) | ||
| { | ||
| var countOfSelectedChars = this.AssociatedObject.SelectedText.Length; | ||
| var caretIndex = this.AssociatedObject.CaretIndex; | ||
| string text = this.AssociatedObject.Text; | ||
|
|
||
| if (countOfSelectedChars > 0 || paste) | ||
| { | ||
| text = text.Remove(caretIndex, countOfSelectedChars); | ||
| return text.Length + newText.Length; | ||
| } | ||
| else | ||
| { | ||
| var insert = Keyboard.IsKeyToggled(Key.Insert); | ||
|
|
||
| return insert && caretIndex < text.Length ? text.Length : text.Length + newText.Length; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| } |
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53 changes: 53 additions & 0 deletions
53
src/AntiDuplWPF/AntiDuplWPF/Behavior/DataGridScrollIntoViewBehavior.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Collections.Specialized; | ||
| using System.Linq; | ||
| using System.Text; | ||
| using System.Threading.Tasks; | ||
| using System.Windows; | ||
| using System.Windows.Controls; | ||
| using System.Windows.Interactivity; | ||
|
|
||
| namespace AntiDuplWPF.Behavior | ||
| { | ||
| public class DataGridScrollIntoViewBehavior : Behavior<DataGrid> | ||
| { | ||
| protected override void OnAttached() | ||
| { | ||
| AssociatedObject.Loaded += OnLoaded; | ||
| AssociatedObject.Unloaded += OnUnLoaded; | ||
| } | ||
|
|
||
| protected override void OnDetaching() | ||
| { | ||
| AssociatedObject.Loaded -= OnLoaded; | ||
| AssociatedObject.Unloaded -= OnUnLoaded; | ||
| } | ||
|
|
||
| private void OnLoaded(object sender, RoutedEventArgs e) | ||
| { | ||
| AssociatedObject.SelectionChanged += AssociatedObject_SelectionChanged; | ||
| } | ||
|
|
||
| void AssociatedObject_SelectionChanged(object sender, SelectionChangedEventArgs e) | ||
| { | ||
| if (AssociatedObject is DataGrid) | ||
| { | ||
| DataGrid grid = (DataGrid)AssociatedObject; | ||
| grid.Dispatcher.BeginInvoke((Action)(() => | ||
| { | ||
| grid.UpdateLayout(); | ||
| if (grid.SelectedItem != null) | ||
| grid.ScrollIntoView(grid.SelectedItem); | ||
| })); | ||
| } | ||
| } | ||
|
|
||
| private void OnUnLoaded(object sender, RoutedEventArgs e) | ||
| { | ||
| AssociatedObject.SelectionChanged -= AssociatedObject_SelectionChanged; | ||
| } | ||
|
|
||
|
|
||
| } | ||
| } |
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