UIElement TryGetToolTipUIElement(CompletionVM completionVM)
{
if (completionVM == null)
{
return(null);
}
var description = completionVM.Completion.Description;
if (string.IsNullOrEmpty(description))
{
return(null);
}
var contentType = session.TextView.TextDataModel.ContentType;
foreach (var provider in completionUIElementProviders)
{
if (!contentType.IsOfAnyType(provider.Metadata.ContentTypes))
{
continue;
}
var elem = provider.Value.GetUIElement(completionVM.Completion, session, UIElementType.Tooltip);
if (elem != null)
{
return(elem);
}
}
return(CreateDefaultToolTipUIElement(description));
}
CompletionVM GetExistingCompletionVM(Completion completion)
{
if (completion == null)
{
return(null);
}
var vm = CompletionVM.TryGet(completion);
Debug.Assert(vm != null);
return(vm);
}
public FrameworkElement GetSuffix(CompletionVM vm)
{
var completion = vm.Completion;
if (string.IsNullOrEmpty((completion as Completion4)?.Suffix))
{
return(null);
}
var elem = CreateFrameworkElement(completion, CompletionClassifierKind.Suffix);
elem.Margin = new Thickness(5, 0, 2, 0);
return(elem);
}
void HideToolTip()
{
if (toolTip == null)
{
return;
}
toolTip.IsOpen = false;
toolTip.Visibility = Visibility.Collapsed;
toolTip.Content = null;
toolTip.PlacementTarget = null;
toolTip = null;
toolTipCompletionVM = null;
}
void ShowToolTip()
{
if (session.IsDismissed)
{
return;
}
var completionVM = control.completionsListBox.SelectedItem as CompletionVM;
if (completionVM == toolTipCompletionVM)
{
return;
}
HideToolTip();
if (completionVM == null)
{
return;
}
var container = control.completionsListBox.ItemContainerGenerator.ContainerFromItem(completionVM) as ListBoxItem;
if (container == null || !container.IsVisible)
{
return;
}
var toolTipElem = TryGetToolTipUIElement(completionVM);
if (toolTipElem == null)
{
return;
}
// When the tooltip was reused, it was empty every other time, so always create a new one.
toolTip = new ToolTip {
Placement = PlacementMode.Right,
Visibility = Visibility.Collapsed,
IsOpen = false,
};
toolTip.SetResourceReference(FrameworkElement.StyleProperty, "CompletionToolTipStyle");
// There's a scrollbar; place the tooltip to the right of the main control and not the ListBoxItem
var pointRelativeToControl = container.TranslatePoint(new Point(0, 0), control);
toolTip.VerticalOffset = pointRelativeToControl.Y;
toolTip.PlacementTarget = control;
toolTip.Content = toolTipElem;
toolTip.Visibility = Visibility.Visible;
Debug.Assert(!toolTip.IsOpen, "Can't set the tool tip's LayoutTransform if it's open");
PopupHelper.SetScaleTransform(wpfTextView, toolTip);
toolTipCompletionVM = completionVM;
toolTip.IsOpen = true;
}
void CompletionList_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
int i;
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
Debug.Assert(e.NewItems != null);
i = e.NewStartingIndex;
var newList = new List <CompletionVM>();
foreach (Completion c in e.NewItems)
{
var vm = GetOrCreateVM(c);
newList.Add(vm);
list.Insert(i++, vm);
}
CollectionChanged?.Invoke(this, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, newList, e.NewStartingIndex));
break;
case NotifyCollectionChangedAction.Remove:
Debug.Assert(e.OldItems != null);
var oldList = new List <CompletionVM>();
foreach (Completion c in e.OldItems)
{
var vm = CompletionVM.TryGet(c);
oldList.Add(vm);
Debug.Assert(list[e.OldStartingIndex].Completion == vm?.Completion);
list.RemoveAt(e.OldStartingIndex);
}
CollectionChanged?.Invoke(this, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, oldList, e.NewStartingIndex));
break;
case NotifyCollectionChangedAction.Replace:
throw new NotSupportedException();
case NotifyCollectionChangedAction.Move:
throw new NotSupportedException();
case NotifyCollectionChangedAction.Reset:
ReinitializeList();
CollectionChanged?.Invoke(this, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset));
break;
default:
Debug.Fail($"Unknown action: {e.Action}");
break;
}
}
CompletionVM GetOrCreateVM(Completion completion) => CompletionVM.TryGet(completion) ?? new CompletionVM(completion, imageMonikerService);
public FrameworkElement GetSuffix(CompletionVM vm) {
var completion = vm.Completion;
if (string.IsNullOrEmpty((completion as Completion4)?.Suffix))
return null;
var elem = CreateFrameworkElement(completion, CompletionClassifierKind.Suffix);
elem.Margin = new Thickness(5, 0, 2, 0);
return elem;
}
public FrameworkElement GetDisplayText(CompletionVM vm) => CreateFrameworkElement(vm.Completion, CompletionClassifierKind.DisplayText);
void HideToolTip() {
if (toolTip == null)
return;
toolTip.IsOpen = false;
toolTip.Visibility = Visibility.Collapsed;
toolTip.Content = null;
toolTip.PlacementTarget = null;
toolTip = null;
toolTipCompletionVM = null;
}
UIElement TryGetToolTipUIElement(CompletionVM completionVM) {
if (completionVM == null)
return null;
var description = completionVM.Completion.Description;
if (string.IsNullOrEmpty(description))
return null;
var contentType = session.TextView.TextDataModel.ContentType;
foreach (var provider in completionUIElementProviders) {
if (!contentType.IsOfAnyType(provider.Metadata.ContentTypes))
continue;
var elem = provider.Value.GetUIElement(completionVM.Completion, session, UIElementType.Tooltip);
if (elem != null)
return elem;
}
return CreateDefaultToolTipUIElement(description);
}
void ShowToolTip() {
if (session.IsDismissed)
return;
var completionVM = control.completionsListBox.SelectedItem as CompletionVM;
if (completionVM == toolTipCompletionVM)
return;
HideToolTip();
if (completionVM == null)
return;
var container = control.completionsListBox.ItemContainerGenerator.ContainerFromItem(completionVM) as ListBoxItem;
if (container == null || !container.IsVisible)
return;
var toolTipElem = TryGetToolTipUIElement(completionVM);
if (toolTipElem == null)
return;
// When the tooltip was reused, it was empty every other time, so always create a new one.
toolTip = new ToolTip {
Placement = PlacementMode.Right,
Visibility = Visibility.Collapsed,
IsOpen = false,
};
toolTip.SetResourceReference(FrameworkElement.StyleProperty, "CompletionToolTipStyle");
// There's a scrollbar; place the tooltip to the right of the main control and not the ListBoxItem
var pointRelativeToControl = container.TranslatePoint(new Point(0, 0), control);
toolTip.VerticalOffset = pointRelativeToControl.Y;
toolTip.PlacementTarget = control;
toolTip.Content = toolTipElem;
toolTip.Visibility = Visibility.Visible;
Debug.Assert(!toolTip.IsOpen, "Can't set the tool tip's LayoutTransform if it's open");
PopupHelper.SetScaleTransform(wpfTextView, toolTip);
toolTipCompletionVM = completionVM;
toolTip.IsOpen = true;
}
public FrameworkElement GetDisplayText(CompletionVM vm) => CreateFrameworkElement(vm.Completion, CompletionClassifierKind.DisplayText);