/// <summary>
/// Set focus on the first valid focusable element in the control
/// </summary>
public void SetFocus(object dataContext = null)
{
UIElement focus = null;
if (IsEnabled && Focusable)
{
focus = this;
}
else
{
if (dataContext != null)
{
focus = WPF.FindFirstChild <FrameworkElement>(this,
(wx) => wx.IsVisible && wx.IsEnabled && wx.Focusable && wx.DataContext == dataContext
);
}
if (focus == null)
{
focus = WPF.FindFirstChild <UIElement>(this,
(wx) => wx.IsVisible && wx.IsEnabled && wx.Focusable
);
}
}
LimeMsg.Debug("LimeControl SetFocus: {0}", focus);
if (focus != null)
{
Keyboard.Focus(focus);
}
}
private void Popup_Opened(object sender, EventArgs e)
{
LimeMsg.Debug("Popup_Opened");
// Subscribe to every parent scrollviewers to detect scrolling there (and close the DropDown)
if (_ScrollChangedEventHandler == null)
{
_ScrollChangedEventHandler = new ScrollChangedEventHandler(ScrollViewer_ScrollChanged);
foreach (var scrollViewer in GetParentScrollViewers())
{
scrollViewer.ScrollChanged += _ScrollChangedEventHandler;
}
}
// Autosize
if (wxPopup.Placement == PlacementMode.Bottom || wxPopup.Placement == PlacementMode.Top)
{
wxPopupBorder.MinWidth = wxMain.ActualWidth;
wxPopup.HorizontalOffset = wxMain.Margin.Left;
}
var item = WPF.FindFirstChild <TextBox>(wxPicker);
if (item != null)
{
Keyboard.Focus(item);
}
}
private void ListBox_PreviewKeyDown(object sender, KeyEventArgs e)
{
LimeMsg.Debug("ListBox_PreviewKeyDown: {0}", e.Key);
var wxobj = e.OriginalSource as ListBoxItem;
if (wxobj == null)
{
return;
}
if (Keyboard.Modifiers != 0)
{
return;
}
bool close = false;
switch (e.Key)
{
case Key.Enter:
var wxcheck = WPF.FindFirstChild <CheckBox>(wxobj);
if (wxcheck != null)
{
wxcheck.IsChecked = !wxcheck.IsChecked;
e.Handled = true;
}
else
{
close = true;
}
break;
case Key.Escape:
var prop = wxMain.DataContext as LimeProperty;
Cache = prop.Value;
close = true;
break;
case Key.Up:
close = wxMenu.SelectedIndex == 0;
break;
case Key.Right:
case Key.Left:
close = true;
break;
}
if (close)
{
wxPopup.IsOpen = false;
wxMain.IsChecked = false;
Keyboard.Focus(wxMain);
e.Handled = true;
}
}
private void Popup_Opened(object sender, EventArgs e)
{
LimeMsg.Debug("Popup_Opened");
// Subscribe to every parent scrollviewers to detect scrolling there (and close the DropDown)
if (_ScrollChangedEventHandler == null)
{
_ScrollChangedEventHandler = new ScrollChangedEventHandler(ScrollViewer_ScrollChanged);
foreach (var scrollViewer in GetParentScrollViewers())
{
LimeMsg.Debug("LimeDropDown Popup_Opened: subscribe _ScrollChangedEventHandler: {0}", scrollViewer);
scrollViewer.ScrollChanged += _ScrollChangedEventHandler;
}
}
// Autosize
if (wxPopup.Placement == PlacementMode.Bottom || wxPopup.Placement == PlacementMode.Top)
{
wxMenu.MinWidth = wxMain.ActualWidth;
wxPopup.HorizontalOffset = wxMain.Margin.Left;
}
// Readjust value if not yet selected
if (wxMenu.ItemsSource != null && Cache != null)
{
wxMenu.SelectedValue = Cache;
}
ListBoxItem item = null;
if (wxMenu.SelectedItem != null)
{
item = wxMenu.ItemContainerGenerator.ContainerFromItem(wxMenu.SelectedItem) as ListBoxItem;
}
if (item == null)
{
item = WPF.FindFirstChild <ListBoxItem>(wxMenu);
}
if (item != null)
{
Keyboard.Focus(item);
}
}
private static void OnOptionsEnabledPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (!(d is LimeControl wxThis))
{
return;
}
var prop = wxThis.DataContext as LimeProperty;
if (wxThis.MainGrid != null && prop != null)
{
var wxobj = WPF.FindFirstChild <StackPanel>(wxThis.MainGrid);
wxobj.Children.Clear();
if ((bool)e.NewValue)
{
if (prop.ReqAdmin)
{
wxobj.Children.Add(new LimeIcon()
{
IconKey = "Shield",
ToolTip = LimeLanguage.Translate(LanguageSection, "ShieldTip", "ShieldTip")
});
}
if (prop.ReqRestart)
{
wxobj.Children.Add(new LimeIcon()
{
IconKey = "Warning",
ToolTip = LimeLanguage.Translate(LanguageSection, "RestartTip", "RestartTip")
});
}
}
}
wxThis.OnOptionsEnabledPropertyChanged(e);
}
