protected override void OnIsKeyboardFocusWithinChanged(DependencyPropertyChangedEventArgs e)
{
IIntegratedHelpService helpService = this.Context.Services.GetService <IIntegratedHelpService>();
if (helpService != null)
{
if ((Boolean)e.NewValue)
{
this.isSelectionChangedInternally = true;
this.Context.Items.SetValue(new Selection());
this.isSelectionChangedInternally = false;
helpService.AddContextAttribute(string.Empty, WorkflowViewManager.GetF1HelpTypeKeyword(typeof(ImportDesigner)), System.ComponentModel.Design.HelpKeywordType.F1Keyword);
}
else
{
helpService.RemoveContextAttribute(string.Empty, WorkflowViewManager.GetF1HelpTypeKeyword(typeof(ImportDesigner)));
}
}
base.OnIsKeyboardFocusWithinChanged(e);
}
void OnItemSelected(Selection newSelection)
{
Fx.Assert(newSelection != null, "newSelection is null");
IList <ModelItem> newSelectionObjects = newSelection.SelectedObjects as IList <ModelItem>;
IList <ModelItem> oldSelectionObjects = oldSelection.SelectedObjects as IList <ModelItem>;
//Call notifyPropertyChanged for IsPrimarySelection attached property.
if (newSelection.PrimarySelection != null && !newSelection.PrimarySelection.Equals(oldSelection.PrimarySelection))
{
isPrimarySelectionProperty.NotifyPropertyChanged(oldSelection.PrimarySelection);
isPrimarySelectionProperty.NotifyPropertyChanged(newSelection.PrimarySelection);
}
else if (newSelection.PrimarySelection == null)
{
isPrimarySelectionProperty.NotifyPropertyChanged(oldSelection.PrimarySelection);
}
//call NotifyPropertyChanged for IsSelection property on ModelItems that were added or removed from selection.
HashSet <ModelItem> selectionChangeSet = new HashSet <ModelItem>(oldSelectionObjects);
selectionChangeSet.SymmetricExceptWith(newSelectionObjects);
foreach (ModelItem selectionChangeMI in selectionChangeSet)
{
isSelectionProperty.NotifyPropertyChanged(selectionChangeMI);
}
if (helpService != null)
{
if (oldSelection.PrimarySelection != null)
{
helpService.RemoveContextAttribute(string.Empty, GetF1HelpTypeKeyword(oldSelection.PrimarySelection.ItemType));
}
if (newSelection.PrimarySelection != null)
{
helpService.AddContextAttribute(string.Empty, GetF1HelpTypeKeyword(newSelection.PrimarySelection.ItemType), HelpKeywordType.F1Keyword);
}
}
oldSelection = newSelection;
}
