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add escaped variables to TextBoxMask

This commit is contained in:
Muhammad Azeez 2019-02-22 20:53:27 +03:00
Родитель 4d07db4566
Коммит e5f97d6ffd
2 изменённых файлов: 143 добавлений и 37 удалений
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26
Microsoft.Toolkit.Uwp.UI/Extensions/TextBoxMask/TextBoxMask.Properties.cs
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@ -29,6 +29,12 @@ namespace Microsoft.Toolkit.Uwp.UI.Extensions
/// </summary>
public static readonly DependencyProperty CustomMaskProperty = DependencyProperty.RegisterAttached("CustomMask", typeof(string), typeof(TextBoxMask), new PropertyMetadata(null, InitTextBoxMask));
/// <summary>
/// Represents the character that's used to escape variables in the mask
/// </summary>
public static readonly DependencyProperty EscapeCharacterProperty =
DependencyProperty.RegisterAttached("EscapeCharacter", typeof(string), typeof(TextBoxMask), new PropertyMetadata("\0"));
private static readonly DependencyProperty RepresentationDictionaryProperty = DependencyProperty.RegisterAttached("RepresentationDictionary", typeof(Dictionary<char, string>), typeof(TextBoxMask), new PropertyMetadata(null));
private static readonly DependencyProperty OldTextProperty = DependencyProperty.RegisterAttached("OldText", typeof(string), typeof(TextBoxMask), new PropertyMetadata(null));
private static readonly DependencyProperty DefaultDisplayTextProperty = DependencyProperty.RegisterAttached("DefaultDisplayText", typeof(string), typeof(TextBoxMask), new PropertyMetadata(null));
@ -94,5 +100,25 @@ namespace Microsoft.Toolkit.Uwp.UI.Extensions
{
obj.SetValue(CustomMaskProperty, value);
}
/// <summary>
/// Gets EscapeCharacter value
/// </summary>
/// <param name="obj"></param>
/// <returns></returns>
public static string GetEscapeCharacter(DependencyObject obj)
{
return (string)obj.GetValue(EscapeCharacterProperty);
}
/// <summary>
/// Sets EscapeCharacter property which represents the character that's used to escape variables in the mask
/// </summary>
/// <param name="obj"></param>
/// <param name="value"></param>
public static void SetEscapeCharacter(DependencyObject obj, string value)
{
obj.SetValue(EscapeCharacterProperty, value);
}
}
}

154
Microsoft.Toolkit.Uwp.UI/Extensions/TextBoxMask/TextBoxMask.cs
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@ -92,12 +92,28 @@ namespace Microsoft.Toolkit.Uwp.UI.Extensions
textbox.SetValue(RepresentationDictionaryProperty, representationDictionary);
var displayText = mask;
var escape = GetEscapeChar(textbox);
var builder = new StringBuilder(mask);
foreach (var key in representationDictionary.Keys)
{
displayText = displayText.Replace(key, placeHolder);
for (int i = 0; i < builder.Length; i++)
{
if (i >= 1 && builder[i - 1] == escape &&
(builder[i] == escape || builder[i] == key))
{
builder.Remove(i - 1, 1);
i--;
}
else if (builder[i] == key)
{
builder[i] = placeHolder;
}
}
}
var displayText = builder.ToString();
if (string.IsNullOrEmpty(textbox.Text))
{
textbox.Text = displayText;
@ -107,7 +123,7 @@ namespace Microsoft.Toolkit.Uwp.UI.Extensions
var textboxInitialValue = textbox.Text;
textbox.Text = displayText;
int oldSelectionStart = (int)textbox.GetValue(OldSelectionStartProperty);
SetTextBoxValue(textboxInitialValue, textbox, mask, representationDictionary, placeHolder, oldSelectionStart);
SetTextBoxValue(textboxInitialValue, textbox, mask, representationDictionary, placeHolder, oldSelectionStart, escape);
}
textbox.TextChanging += Textbox_TextChanging;
@ -122,28 +138,37 @@ namespace Microsoft.Toolkit.Uwp.UI.Extensions
private static void Textbox_GotFocus(object sender, RoutedEventArgs e)
{
var textbox = (TextBox)sender;
var mask = textbox?.GetValue(MaskProperty) as string;
var placeHolderValue = textbox?.GetValue(PlaceHolderProperty) as string;
var representationDictionary = textbox?.GetValue(RepresentationDictionaryProperty) as Dictionary<char, string>;
if (string.IsNullOrWhiteSpace(mask) ||
representationDictionary == null ||
string.IsNullOrEmpty(placeHolderValue))
{
return;
}
textbox.GotFocus -= Textbox_GotFocus;
var placeHolder = placeHolderValue[0];
// if the textbox got focus and the textbox is empty (contains only mask) set the textbox cursor at the beginning to simulate normal TextBox behavior if it is empty.
// if the textbox has value set the cursor to the first empty mask character
var textboxText = textbox.Text;
for (int i = 0; i < textboxText.Length; i++)
try
{
if (placeHolder == textboxText[i])
var mask = textbox?.GetValue(MaskProperty) as string;
var placeHolderValue = textbox?.GetValue(PlaceHolderProperty) as string;
var representationDictionary = textbox?.GetValue(RepresentationDictionaryProperty) as Dictionary<char, string>;
if (string.IsNullOrWhiteSpace(mask) ||
representationDictionary == null ||
string.IsNullOrEmpty(placeHolderValue))
{
textbox.SelectionStart = i;
break;
return;
}
var placeHolder = placeHolderValue[0];
// if the textbox got focus and the textbox is empty (contains only mask) set the textbox cursor at the beginning to simulate normal TextBox behavior if it is empty.
// if the textbox has value set the cursor to the first empty mask character
var textboxText = textbox.Text;
for (int i = 0; i < textboxText.Length; i++)
{
if (placeHolder == textboxText[i])
{
textbox.SelectionStart = i;
break;
}
}
}
finally
{
textbox.GotFocus += Textbox_GotFocus;
}
}
@ -173,10 +198,12 @@ namespace Microsoft.Toolkit.Uwp.UI.Extensions
return;
}
var escape = GetEscapeChar(textbox);
// to update the textbox text without triggering TextChanging text
int oldSelectionStart = (int)textbox.GetValue(OldSelectionStartProperty);
textbox.TextChanging -= Textbox_TextChanging;
SetTextBoxValue(pasteText, textbox, mask, representationDictionary, placeHolderValue[0], oldSelectionStart);
SetTextBoxValue(pasteText, textbox, mask, representationDictionary, placeHolderValue[0], oldSelectionStart, escape);
textbox.SetValue(OldTextProperty, textbox.Text);
textbox.TextChanging += Textbox_TextChanging;
}
@ -187,18 +214,27 @@ namespace Microsoft.Toolkit.Uwp.UI.Extensions
string mask,
Dictionary<char, string> representationDictionary,
char placeholder,
int oldSelectionStart)
int oldSelectionStart,
char escape)
{
var maxLength = (newValue.Length + oldSelectionStart) < mask.Length ? (newValue.Length + oldSelectionStart) : mask.Length;
int slashes = 0;
for (int i = 0; i < mask.Length; i++)
{
if (mask[i] == escape)
slashes++;
}
var maxLength = (newValue.Length + oldSelectionStart) < mask.Length - slashes ? (newValue.Length + oldSelectionStart) : mask.Length - slashes;
var textArray = textbox.Text.ToCharArray();
for (int i = oldSelectionStart; i < maxLength; i++)
{
var maskChar = mask[i];
var mi = GetMaskIndex(i, mask, escape);
var maskChar = mask[mi];// mask[i];
var selectedChar = newValue[i - oldSelectionStart];
// If dynamic character a,9,* or custom
if (representationDictionary.ContainsKey(maskChar))
if (representationDictionary.ContainsKey(maskChar) && (mi == 0 || mask[mi - 1] != escape))
{
var pattern = representationDictionary[maskChar];
if (Regex.IsMatch(selectedChar.ToString(), pattern))
@ -282,6 +318,8 @@ namespace Microsoft.Toolkit.Uwp.UI.Extensions
// for handling single key click add +1 to match length for selection = 1
var singleOrMultiSelectionIndex = oldSelectionLength == 0 ? oldSelectionLength + 1 : oldSelectionLength;
var escape = GetEscapeChar(textbox);
// Case change due to Text property is assigned a value (Ex Textbox.Text="value")
if (textbox.SelectionStart == 0 && textbox.FocusState == FocusState.Unfocused)
{
@ -294,7 +332,7 @@ namespace Microsoft.Toolkit.Uwp.UI.Extensions
{
var textboxInitialValue = textbox.Text;
textbox.Text = displayText;
SetTextBoxValue(textboxInitialValue, textbox, mask, representationDictionary, placeHolderValue[0], 0);
SetTextBoxValue(textboxInitialValue, textbox, mask, representationDictionary, placeHolderValue[0], 0, escape);
textbox.SetValue(OldTextProperty, textbox.Text);
return;
}
@ -307,10 +345,13 @@ namespace Microsoft.Toolkit.Uwp.UI.Extensions
textbox.Text[textbox.SelectionStart - 1] :
placeHolder;
var maskChar = mask[newSelectionIndex];
// Re-Align the mask index ina
var mi = GetMaskIndex(textbox.SelectionStart - 1, mask, escape);
var maskChar = mask[mi];
// If dynamic character a,9,* or custom
if (representationDictionary.ContainsKey(maskChar))
if (representationDictionary.ContainsKey(maskChar) && (mi == 0 || mask[mi - 1] != escape))
{
var pattern = representationDictionary[maskChar];
if (Regex.IsMatch(selectedChar.ToString(), pattern))
@ -354,10 +395,11 @@ namespace Microsoft.Toolkit.Uwp.UI.Extensions
i < (oldSelectionStart - deleteBackspaceIndex + singleOrMultiSelectionIndex);
i++)
{
var maskChar = mask[i];
var mi = GetMaskIndex(i, mask, escape);
var maskChar = mask[mi];
// If dynamic character a,9,* or custom
if (representationDictionary.ContainsKey(maskChar))
if (representationDictionary.ContainsKey(maskChar) && (i == 0 || mask[mi - 1] != escape))
{
textArray[i] = placeHolder;
}
@ -370,25 +412,63 @@ namespace Microsoft.Toolkit.Uwp.UI.Extensions
}
}
textbox.Text = new string(textArray);
var text = new string(textArray);
textbox.Text = text;
textbox.SetValue(OldTextProperty, textbox.Text);
textbox.SelectionStart = isDeleteOrBackspace ? newSelectionIndex : GetSelectionStart(mask, newSelectionIndex, representationDictionary);
textbox.SelectionStart = isDeleteOrBackspace ? newSelectionIndex : GetSelectionStart(mask, newSelectionIndex, representationDictionary, escape);
}
private static int GetSelectionStart(string mask, int selectionIndex, Dictionary<char, string> representationDictionary)
private static int GetSelectionStart(string mask, int selectionIndex, Dictionary<char, string> representationDictionary, char escape)
{
for (int i = selectionIndex; i < mask.Length; i++)
var index = selectionIndex;
var slashes = 0;
for (int i = 0; i < selectionIndex; i++)
{
if (mask[i] == escape)
slashes++;
}
for (int i = selectionIndex + slashes; i < mask.Length; i++)
{
var maskChar = mask[i];
// If dynamic character a,9,* or custom
if (representationDictionary.ContainsKey(maskChar))
if ((i == 0 || mask[i - 1] != escape) && representationDictionary.ContainsKey(maskChar))
{
return i;
return index;
}
else if (mask[i] == escape)
{
index--;
}
index++;
}
return selectionIndex;
}
private static char GetEscapeChar(TextBox textBox)
{
var escapeCharValue = textBox.GetValue(EscapeCharacterProperty) as string;
if (string.IsNullOrEmpty(escapeCharValue))
{
throw new ArgumentException("EscapeCharacter can't be null or empty.");
}
return escapeCharValue[0];
}
private static int GetMaskIndex(int index, string mask, char escape)
{
int slashes = 0;
for (int i = 0; i <= index + slashes && i < mask.Length; i++)
{
if (mask[i] == escape)
slashes++;
}
return Math.Min(mask.Length - 1, index + slashes);
}
}
}