public static void UpdateClearButtonVisibility(this AppCompatEditText editText, IEntry entry, Func <Drawable?>?getClearButtonDrawable)
{
// Places clear button drawable at the end or start of the EditText based on FlowDirection.
void ShowClearButton()
{
var drawable = getClearButtonDrawable?.Invoke();
if (entry.FlowDirection == FlowDirection.RightToLeft)
{
editText.SetCompoundDrawablesWithIntrinsicBounds(drawable, null, null, null);
}
else
{
editText.SetCompoundDrawablesWithIntrinsicBounds(null, null, drawable, null);
}
}
// Hides clear button drawable from the control.
void HideClearButton()
{
editText.SetCompoundDrawablesWithIntrinsicBounds(null, null, null, null);
}
bool isFocused = editText.IsFocused;
bool hasText = entry.Text?.Length > 0;
bool shouldDisplayClearButton = entry.ClearButtonVisibility == ClearButtonVisibility.WhileEditing &&
hasText &&
isFocused;
if (shouldDisplayClearButton)
{
ShowClearButton();
}
else
{
HideClearButton();
}
}