/// <summary>
/// Occurs when content changes in the email address textbox.
/// </summary>
/// <param name="sender">The object that raised the event (TextBox).</param>
/// <param name="e">The event data (RoutedEventArgs).</param>
private void WatermarkTextBox_TextChanged(object sender, TextChangedEventArgs e)
{
// Get the email address textbox
_textBox = (WatermarkTextBox)sender;
// If text has been entered
if (!string.IsNullOrWhiteSpace(_textBox.Text))
{
// Get matching email addresses
IEnumerable <EmailAddress> foundEmailAddresses = ComposeMailPage.Current.StoredEmailAddresses.Where(o => ((!string.IsNullOrEmpty(o.DisplayName) &&
o.DisplayName.ToLower().Contains(_textBox.Text.ToLower()))) ||
o.Address.ToLower().Contains(_textBox.Text.ToLower()));
// If any matches are found
if (foundEmailAddresses.Count() > 0)
{
// Position the popup and display it
pSuggestions.VerticalOffset = icEmailAddress.ActualHeight + 1;
pSuggestions.IsOpen = true;
lvEmailAddress.ItemsSource = foundEmailAddresses;
lvEmailAddress.Visibility = Visibility.Visible;
_textBox.Focus(FocusState.Programmatic);
}
// Else if there are not matches
else
{
// Close the popup
CloseSuggestions();
}
}
}
/// <summary>
/// Occurs when this control gets focus.
/// </summary>
/// <param name="sender">The object that raised the event (TextBox).</param>
/// <param name="e">The event data (RoutedEventArgs).</param>
private void UserControl_GotFocus(object sender, RoutedEventArgs e)
{
if (this.FocusState == FocusState.Programmatic)
{
if (_textBox != null)
{
_textBox.Focus(FocusState.Programmatic);
}
}
}
/// <summary>
/// If valid, add the user-provided Watermark and logo image details to local
/// storage to be read by the background task
/// </summary>
/// <param name="sender">sender</param>
/// <param name="e">Event arguments</param>
private async void SetWatermarkButton_Click(object sender, RoutedEventArgs e)
{
if (IsValidWatermark(Watermark))
{
// Save required values to local storage
localStorage.SaveWatermarkTextToLocalStorage(Watermark);
// If the check box for a logo image has been selected then add that too
await AddLogoImageIfRequiredAsync();
// Let the OnXpsDataAvailable finish by signalling that all the required parameters are now available
SignalThatAllRequiredInformationIsAvailable();
}
else
{
// If bad number switch focus to the text box
WatermarkTextBox.Focus(FocusState.Programmatic);
// Highlight the text
WatermarkTextBox.SelectAll();
}
}
