private bool _isFirstLoad = true;//是否第一次加载，避免重复注册事件
public InfoCalendar()
{
InitializeComponent();
if (_isFirstLoad)
{
_isFirstLoad = false;
this.Loaded += delegate
{
var template = (ControlTemplate)((Setter)calendar.CalendarItemStyle.Setters[1]).Value;
//CalendarItem为calendar模板中的一个元素，名称为PART_CalendarItem，它应用了calendar.CalendarItemStyle
var header = (FrameworkElement)calendar.Template.FindName("PART_CalendarItem", calendar);
_pan.Invest(this, (FrameworkElement)template.FindName("header", header));
Border tabContainBorder = (Border)tc.Template.FindName("tabContainBorder", tc);
tabContainBorder.MinWidth = tc.ActualWidth;
tabContainBorder.MinHeight = tc.ActualHeight;
_grip.Invest(tabContainBorder, (FrameworkElement)tabContainBorder.FindName("GripPath"));
Button tabCloseBtn = (Button)tabContainBorder.FindName("tabCloseBtn");
tabCloseBtn.Click += delegate
{
Storyboard sb = (Storyboard)((FrameworkElement)(tabContainBorder.Parent)).Resources["sbInfoPanelFadeOut"];
sb.Completed += delegate
{
calendar.Focus();
tc.SelectedIndex = -1;
tabContainBorder.Width = tabContainBorder.MinWidth;
tabContainBorder.Height = tabContainBorder.MinHeight;
tabContainBorder.Visibility = Visibility.Hidden;
};
sb.Begin();
};
tc.SelectedIndex = -1;
tc.SelectionChanged += delegate
{
Storyboard sb = (Storyboard)((FrameworkElement)(tabContainBorder.Parent)).Resources["sbInfoPanelFadeIn"];
if (tabContainBorder.Visibility == Visibility.Hidden && tc.SelectedIndex != -1)
{
tabContainBorder.Visibility = Visibility.Visible;
sb.Begin();
}
};
tabContainBorder.DragOver += new DragEventHandler(tabContainBorder_DragOver);
this.Unloaded += delegate {
//RaiseEvent可在外部触发非本类的事件
tabCloseBtn.RaiseEvent(new RoutedEventArgs(Button.ClickEvent));
};
};
}
spPad.PreviewMouseLeftButtonDown += spPad_PreviewMouseLeftButtonDown;
spPad.PreviewMouseMove += spPad_PreviewMouseMove;
}
public ScrollTabControl()
{
InitializeComponent();
//父控件OnApplyTemplate执行时不代表子控件也OnApplyTemplate
//所以将以下逻辑放入Loaded节点中
this.Loaded += delegate
{
//下句会诡异地得出tp==null的结果（不定期）
FrameworkElement tp = (FrameworkElement)tc.Template.FindName("PART_ScrollContentPresenter", tc);
_pan.Invest(this, tp);
_grip.Invest(this, GripPath);
};
}