|
public static GetClearTextButton ( |
||
| d | ||
| return | bool | |
private static void CanClearControl(CanExecuteRoutedEventArgs args)
{
if (args.Handled)
{
return;
}
if (!(args.OriginalSource is DependencyObject control) || false == TextBoxHelper.GetClearTextButton(control))
{
return;
}
args.CanExecute = true;
switch (control)
{
case DatePicker datePicker:
args.CanExecute = !ControlsHelper.GetIsReadOnly(datePicker);
break;
case TimePickerBase timePicker:
args.CanExecute = !timePicker.IsReadOnly;
break;
case TextBoxBase textBox:
args.CanExecute = !textBox.IsReadOnly;
break;
case ComboBox comboBox:
args.CanExecute = !comboBox.IsReadOnly;
break;
}
}
public static void ClearControl(ExecutedRoutedEventArgs args)
{
if (args.Handled)
{
return;
}
if (!(args.OriginalSource is DependencyObject control) || false == TextBoxHelper.GetClearTextButton(control))
{
return;
}
switch (control)
{
case RichTextBox richTextBox:
richTextBox.Document?.Blocks?.Clear();
richTextBox.Selection?.Select(richTextBox.CaretPosition, richTextBox.CaretPosition);
break;
case DatePicker datePicker:
datePicker.SetCurrentValue(DatePicker.SelectedDateProperty, null);
datePicker.SetCurrentValue(DatePicker.TextProperty, null);
datePicker.GetBindingExpression(TextBox.TextProperty)?.UpdateSource();
break;
case TimePickerBase timePicker:
timePicker.SetCurrentValue(TimePickerBase.SelectedDateTimeProperty, null);
timePicker.GetBindingExpression(TimePickerBase.SelectedDateTimeProperty)?.UpdateSource();
break;
case TextBox textBox:
textBox.Clear();
textBox.GetBindingExpression(TextBox.TextProperty)?.UpdateSource();
break;
case PasswordBox passwordBox:
passwordBox.Clear();
passwordBox.GetBindingExpression(PasswordBoxBindingBehavior.PasswordProperty)?.UpdateSource();
break;
case ComboBox comboBox:
{
if (comboBox.IsEditable)
{
comboBox.SetCurrentValue(ComboBox.TextProperty, null);
comboBox.GetBindingExpression(ComboBox.TextProperty)?.UpdateSource();
}
comboBox.SetCurrentValue(ComboBox.SelectedItemProperty, null);
comboBox.GetBindingExpression(ComboBox.SelectedItemProperty)?.UpdateSource();
break;
}
}
}
public static void ButtonClicked(Button sender, RoutedEventArgs e)
{
DependencyObject parent = VisualTreeHelper.GetParent((Button)sender);
while (!(parent is TextBox) && !(parent is PasswordBox) && !(parent is ComboBox))
{
parent = VisualTreeHelper.GetParent(parent);
}
ICommand buttonCommand = TextBoxHelper.GetButtonCommand(parent);
if (buttonCommand != null && buttonCommand.CanExecute(parent))
{
object buttonCommandParameter = TextBoxHelper.GetButtonCommandParameter(parent);
ICommand command = buttonCommand;
object obj = buttonCommandParameter;
if (obj == null)
{
obj = parent;
}
command.Execute(obj);
}
if (TextBoxHelper.GetClearTextButton(parent))
{
if (parent is TextBox)
{
((TextBox)parent).Clear();
return;
}
if (parent is PasswordBox)
{
((PasswordBox)parent).Clear();
return;
}
if (parent is ComboBox)
{
if (((ComboBox)parent).IsEditable)
{
((ComboBox)parent).Text = string.Empty;
}
((ComboBox)parent).SelectedItem = null;
}
}
}
private static void CanClearControl(CanExecuteRoutedEventArgs args)
{
if (args.Handled)
{
return;
}
if (args.OriginalSource is not DependencyObject control || false == TextBoxHelper.GetClearTextButton(control))
{
return;
}
args.CanExecute = control switch
{
DatePicker datePicker => !ControlsHelper.GetIsReadOnly(datePicker),
TimePickerBase timePicker => !timePicker.IsReadOnly,
TextBoxBase textBox => !textBox.IsReadOnly,
ComboBox comboBox => !comboBox.IsReadOnly,
_ => true
};
}