protected override void OnPreviewLostKeyboardFocus(KeyboardFocusChangedEventArgs e)
{
var count = CountDigits();
if (!PhoneValidator.ValidatePhoneNumber(Text, out var compactNumber))
{
MessageBox.Show($"Illegal phone number '{Text}'.", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
e.Handled = true;
}
else if (count != 0 && count < MinDigits)
{
MessageBox.Show($"Phone number '{Text}' should have at least {MinDigits} digits.", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
e.Handled = true;
}
else if (count > MaxDigits)
{
MessageBox.Show($"Phone number '{Text}' should have at most {MaxDigits} digits.", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
e.Handled = true;
}
else
{
CompactNumber = compactNumber;
}
Text = CountryCode.Format(Text) ?? Text;
base.OnPreviewLostKeyboardFocus(e);
}
/// <summary>
/// Sets initial value from code behind. If isRequired is true, user needs to change the value before saving is possible.
/// If minDigits or maxDigits are null, MinDigits or MaxDigits value gets not changed.
/// </summary>
public virtual void Initialise(string?text, bool?isRequired = null, int?minDigits = null, int?maxDigits = null)
{
if (!PhoneValidator.ValidatePhoneNumber(text, out var compactNumber))
{
throw new Exception($"Error PhoneTextBox.Initialise(): Text {text} is not a valid phone number.");
}
var newMinDigits = minDigits ?? MinDigits;
var newMaxDigits = maxDigits ?? MaxDigits;
var count = CountDigits();
if (count != 0)
{
if (count < newMinDigits)
{
throw new Exception($"Error PhoneTextBox.Initialise(): Phone number {Text} should have at least MinDigit {newMinDigits} digits.");
}
if (count > newMaxDigits)
{
throw new Exception($"Error PhoneTextBox.Initialise(): Phone number {Text} should have at most MaxDigits {newMaxDigits} digits.");
}
}
isInitialising = true;
MinDigits = newMinDigits;
MaxDigits = newMaxDigits;
CompactNumber = compactNumber;
isInitialising = false;
if (text != null)
{
text = CountryCode.Format(text) ?? text;
}
base.Initialise(text, isRequired);
}
// ---------
protected override void OnPreviewTextInput(TextCompositionEventArgs e)
{
if (e.Text.Length > 0) //ctrl + key results in Text.Length==0
{
if (e.Text.Length != 1)
{
throw new NotSupportedException($"PhoneTextBox supports only ASCII code.");
}
var inputChar = e.Text[0];
var textWithoutSelection = GetTextWithoutSelection();
if (!PhoneValidator.ValidateUserInput(inputChar, CaretIndex, textWithoutSelection) ||
(inputChar >= '0' && inputChar <= '9' && CountDigits() >= MaxDigits))
{
e.Handled = true;
}
}
base.OnPreviewTextInput(e);
}
protected override void OnTextBoxInitialized()
{
//verify the values set in XAML
if (!PhoneValidator.ValidatePhoneNumber(Text, out var compactNumber))
{
throw new Exception($"Error PhoneTextBox: Text {Text} is not a valid phone number.");
}
Text = CountryCode.Format(Text) ?? Text;
var count = CountDigits();
if (count != 0)
{
if (count < MinDigits)
{
throw new Exception($"Error PhoneTextBox: Phone number {Text} should have at least MinDigits {MinDigits} digits.");
}
if (count > MaxDigits)
{
throw new Exception($"Error PhoneTextBox: Phone number {Text} should have at most MaxDigits {MaxDigits} digits.");
}
}
CompactNumber = compactNumber;
}