/// <summary>
/// Clear the event, and detach our current EditableTextBox from ComboBox
/// </summary>
private void DetachFromVisualTree()
{
if (EditableTextBoxSite != null)
{
EditableTextBoxSite.LostKeyboardFocus -= new KeyboardFocusChangedEventHandler(OnEditableTextBoxLostFocus);
EditableTextBoxSite.KeyDown -= new KeyEventHandler(OnEditableTextBoxKeyDown);
EditableTextBoxSite.TextChanged -= new TextChangedEventHandler(OnEditableTextBoxTextChanged);
EditableTextBoxSite = null;
}
if (MonthCalendar != null)
{
MonthCalendar.DateSelectionChanged -= new DateSelectionChangedEventHandler(OnDateSelectionChanged);
MonthCalendar.VisibleMonthChanged -= new RoutedPropertyChangedEventHandler<DateTime>(OnMonthCalendarVisibleMonthChanged);
CommandManager.RemovePreviewExecutedHandler(MonthCalendar, new ExecutedRoutedEventHandler(OnMonthCalendarCommandPreviewExecuted));
MonthCalendar = null;
}
}
/// <summary>
/// Create a new SelectionChanger -- there should only be one instance per MonthCalendar.
/// </summary>
internal SelectionChanger(MonthCalendar mcc)
{
Debug.Assert(mcc != null);
_owner = mcc;
InitFlags();
_toSelect = new List<DateTime>(1);
_toRestoreSelect = new List<DateTime>(1);
_toUnselect = new List<DateTime>(1);
}
/// <summary>
/// Detaches the EditableTextBox, MonthCalendar from old child tree and attaches them to a new one
/// </summary>
private void AttachToVisualTree()
{
DetachFromVisualTree();
EditableTextBoxSite = GetTemplateChild(c_EditableTextBoxTemplateName) as TextBox;
if (EditableTextBoxSite != null)
{
EditableTextBoxSite.LostKeyboardFocus += new KeyboardFocusChangedEventHandler(OnEditableTextBoxLostFocus);
EditableTextBoxSite.KeyDown += new KeyEventHandler(OnEditableTextBoxKeyDown);
EditableTextBoxSite.TextChanged += new TextChangedEventHandler(OnEditableTextBoxTextChanged);
if (CanEdit)//set Text to EditableTextBoxSite.Text in editable mode
{
UpdateEditableTextBox(Text);
}
}
MonthCalendar = GetTemplateChild(c_DatePickerCalendarTemplateName) as MonthCalendar;
if (MonthCalendar != null)
{
MonthCalendar.DateSelectionChanged += new DateSelectionChangedEventHandler(OnDateSelectionChanged);
MonthCalendar.VisibleMonthChanged += new RoutedPropertyChangedEventHandler<DateTime>(OnMonthCalendarVisibleMonthChanged);
CommandManager.AddPreviewExecutedHandler(MonthCalendar, new ExecutedRoutedEventHandler(OnMonthCalendarCommandPreviewExecuted));
}
RefreshDropDownButtonStyle();
}
