private static void OnCanShowPopupItem(object sender, CanExecuteRoutedEventArgs e)
{
PopupStackControl stackControl = (PopupStackControl)sender;
e.CanExecute = e.Parameter is PopupItem item && !stackControl.Contains(item);
e.Handled = true;
}
private static void OnShowPopupItem(object sender, ExecutedRoutedEventArgs e)
{
PopupStackControl stackControl = (PopupStackControl)sender;
stackControl.Show((PopupItem)e.Parameter);
e.Handled = true;
}
private static void OnClosePopupItem(object sender, ExecutedRoutedEventArgs e)
{
PopupStackControl stackControl = (PopupStackControl)sender;
stackControl.Close(e.Parameter as PopupItem);
e.Handled = true;
}
public PopupStack(PopupStackControl popupStackControl)
{
if (popupStackControl == null)
{
throw new ArgumentNullException(nameof(popupStackControl));
}
this._parentPopupStackControl = popupStackControl;
}
internal void InternalDiapose()
{
this.ParentHostStack = null;
this._isClosing = false;
this._isHostAtViewStack = false;
this.ParentPopup = null;
if (this._dispatcherFrame != null)
{
this._dispatcherFrame.Continue = false;
}
this._dispatcherFrame = null;
this._showingAsModal = false;
}
internal void VerifyCanShow(PopupStackControl newpopupStackControl = null)
{
if (this._isClosing)
{
throw new Exception("该项当前不可显示，因为它当前正在关闭");
}
if (!this._isClosed)
{
throw new Exception("该项当前不可显示，因为它当前正在显示");
}
if (this._showingAsModal)
{
throw new Exception("该项当前不可显示，因为它当前正在以模态显示");
}
if (this.ParentHostStack != null &&
!object.ReferenceEquals(this.ParentHostStack, newpopupStackControl))
{
throw new Exception("该项当前不可显示，因为它当前已处于某个视图堆栈中");
}
}
public RichViewControl()
{
this._popupStackControl = new PopupStackControl();
}
public PopupItem()
{
this._childPopupStackControl = new PopupStackControl(this);
}
public PopupItem()
{
this._popupStackControl = new PopupStackControl();
}