private void OnListBoxPreviewGotKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
{
ListBoxItem item = VisualTreeUtils.FindVisualAncestor <ListBoxItem>(e.OriginalSource as DependencyObject);
if (item != null)
{
this.SelectedListItem = item.Content as ExpandableItemWrapper;
}
}
private void OnListBoxPreviewGotKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
{
ListBoxItem item = VisualTreeUtils.FindVisualAncestor<ListBoxItem>(e.OriginalSource as DependencyObject);
if (item != null)
{
this.SelectedListItem = item.Content as ExpandableItemWrapper;
}
}
private void OnExpandCollapseButtonClicked(object sender, RoutedEventArgs e)
{
ToggleButton button = (ToggleButton)sender;
ListBox listBox = VisualTreeUtils.FindVisualAncestor <ListBox>(button);
ExpandableItemWrapper wrapper = (ExpandableItemWrapper)listBox.SelectedItem;
wrapper.IsExpanded = button.IsChecked.Value;
this.ViewStateService.StoreViewState(wrapper.Item, ExpandViewStateKey, button.IsChecked.Value);
if ((wrapper.IsExpanded && this.Designer.ShouldCollapseAll) || !wrapper.IsExpanded && this.Designer.ShouldExpandAll)
{
// Pin the item so that it can still be expanded / collapsed when CollapseAll / ExpandAll is enabled
wrapper.IsPinned = true;
}
}
public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
{
if (values[0] != DependencyProperty.UnsetValue && values[1] != DependencyProperty.UnsetValue)
{
bool isExpanded = (bool)values[0];
bool isPinned = (bool)values[1];
bool shouldExpandAll = (bool)values[2];
bool shouldCollapseAll = (bool)values[3];
ExpandableItemWrapper wrapper = (ExpandableItemWrapper)values[4];
if ((!shouldExpandAll || isExpanded) &&
(!shouldCollapseAll || !isExpanded))
{
wrapper.SetPinState(false);
}
return(ViewUtilities.ShouldShowExpanded(isExpanded, shouldExpandAll, shouldCollapseAll, wrapper.IsPinned));
}
else
{
return(false);
}
}
public TransitionDesigner()
{
InitializeComponent();
this.TransitionsSharingTrigger = new ObservableCollection <ExpandableItemWrapper>();
this.Loaded += (sender, e) =>
{
if (!this.isPopulated)
{
this.isPopulated = true;
this.TransitionsSharingTrigger.CollectionChanged += OnTransitionsCollectionChanged;
this.ModelItem.PropertyChanged += OnModelItemPropertyChanged;
this.parentStateModelItem = StateContainerEditor.GetParentStateModelItemForTransition(this.ModelItem);
this.parentStateModelItem.Properties[StateDesigner.TransitionsPropertyName].Collection.CollectionChanged += OnTransitionsModelItemCollectionChanged;
ExpandableItemWrapper selectedItem = this.UpdateTransitionsSharingTrigger();
if (null != selectedItem)
{
this.SelectedTransition = selectedItem;
}
}
};
this.Unloaded += (sender, e) =>
{
if (this.isPopulated)
{
this.isPopulated = false;
this.TransitionsSharingTrigger.Clear();
this.TransitionsSharingTrigger.CollectionChanged -= OnTransitionsCollectionChanged;
this.ModelItem.PropertyChanged -= OnModelItemPropertyChanged;
this.parentStateModelItem.Properties[StateDesigner.TransitionsPropertyName].Collection.CollectionChanged -= OnTransitionsModelItemCollectionChanged;
this.SelectedTransition = null;
this.parentStateModelItem = null;
}
};
}
private ExpandableItemWrapper UpdateTransitionsSharingTrigger()
{
ExpandableItemWrapper wrapper = null;
if (!this.suppressUpdatingTransitionsSharingTrigger)
{
this.TransitionsSharingTrigger.Clear();
bool expandTargetTransition = true;
object expandCollapseTargetViewState = this.ViewStateService.RetrieveViewState(this.ModelItem, ExpandViewStateKey);
if (expandCollapseTargetViewState != null)
{
expandTargetTransition = (bool)expandCollapseTargetViewState;
}
wrapper = new ExpandableItemWrapper()
{
Item = this.ModelItem,
IsExpanded = expandTargetTransition
};
ModelItem triggerModelItem = this.ModelItem.Properties[TriggerPropertyName].Value;
if (triggerModelItem != null)
{
foreach (ModelItem transitionModelItem in this.parentStateModelItem.Properties[StateDesigner.TransitionsPropertyName].Collection)
{
if (transitionModelItem != this.ModelItem)
{
if (triggerModelItem == transitionModelItem.Properties[TriggerPropertyName].Value)
{
bool expandTransition = false;
object expandCollapseViewState = this.ViewStateService.RetrieveViewState(transitionModelItem, ExpandViewStateKey);
if (expandCollapseViewState != null)
{
expandTransition = (bool)expandCollapseViewState;
}
this.TransitionsSharingTrigger.Add(new ExpandableItemWrapper()
{
Item = transitionModelItem,
IsExpanded = expandTransition
});
}
}
else
{
this.TransitionsSharingTrigger.Add(wrapper);
}
}
}
// Connectors starting from the same point should share the same trigger
else
{
PointCollection thisPointCollection = this.ViewStateService.RetrieveViewState(this.ModelItem, StateContainerEditor.ConnectorLocationViewStateKey) as PointCollection;
if (thisPointCollection != null && thisPointCollection.Count > 1)
{
foreach (ModelItem transitionModelItem in this.parentStateModelItem.Properties[StateDesigner.TransitionsPropertyName].Collection)
{
if (transitionModelItem != this.ModelItem)
{
PointCollection pointCollection = this.ViewStateService.RetrieveViewState(transitionModelItem, StateContainerEditor.ConnectorLocationViewStateKey) as PointCollection;
if (pointCollection != null && pointCollection.Count > 0)
{
if (pointCollection[0].IsEqualTo(thisPointCollection[0]))
{
Fx.Assert(transitionModelItem.Properties[TriggerPropertyName].Value == null, "Transition trigger should be null.");
bool expandTransition = false;
object expandCollapseViewState = this.ViewStateService.RetrieveViewState(transitionModelItem, ExpandViewStateKey);
if (expandCollapseViewState != null)
{
expandTransition = (bool)expandCollapseViewState;
}
this.TransitionsSharingTrigger.Add(new ExpandableItemWrapper()
{
Item = transitionModelItem,
IsExpanded = expandTransition
});
}
}
}
else
{
this.TransitionsSharingTrigger.Add(wrapper);
}
}
}
}
}
return(wrapper);
}
private ExpandableItemWrapper UpdateTransitionsSharingTrigger()
{
ExpandableItemWrapper wrapper = null;
if (!this.suppressUpdatingTransitionsSharingTrigger)
{
this.TransitionsSharingTrigger.Clear();
bool expandTargetTransition = true;
object expandCollapseTargetViewState = this.ViewStateService.RetrieveViewState(this.ModelItem, ExpandViewStateKey);
if (expandCollapseTargetViewState != null)
{
expandTargetTransition = (bool)expandCollapseTargetViewState;
}
wrapper = new ExpandableItemWrapper()
{
Item = this.ModelItem,
IsExpanded = expandTargetTransition
};
ModelItem triggerModelItem = this.ModelItem.Properties[TriggerPropertyName].Value;
if (triggerModelItem != null)
{
foreach (ModelItem transitionModelItem in this.parentStateModelItem.Properties[StateDesigner.TransitionsPropertyName].Collection)
{
if (transitionModelItem != this.ModelItem)
{
if (triggerModelItem == transitionModelItem.Properties[TriggerPropertyName].Value)
{
bool expandTransition = false;
object expandCollapseViewState = this.ViewStateService.RetrieveViewState(transitionModelItem, ExpandViewStateKey);
if (expandCollapseViewState != null)
{
expandTransition = (bool)expandCollapseViewState;
}
this.TransitionsSharingTrigger.Add(new ExpandableItemWrapper()
{
Item = transitionModelItem,
IsExpanded = expandTransition
});
}
}
else
{
this.TransitionsSharingTrigger.Add(wrapper);
}
}
}
// Connectors starting from the same point should share the same trigger
else
{
PointCollection thisPointCollection = this.ViewStateService.RetrieveViewState(this.ModelItem, StateContainerEditor.ConnectorLocationViewStateKey) as PointCollection;
if (thisPointCollection != null && thisPointCollection.Count > 1)
{
foreach (ModelItem transitionModelItem in this.parentStateModelItem.Properties[StateDesigner.TransitionsPropertyName].Collection)
{
if (transitionModelItem != this.ModelItem)
{
PointCollection pointCollection = this.ViewStateService.RetrieveViewState(transitionModelItem, StateContainerEditor.ConnectorLocationViewStateKey) as PointCollection;
if (pointCollection != null && pointCollection.Count > 0)
{
if (pointCollection[0].IsEqualTo(thisPointCollection[0]))
{
Fx.Assert(transitionModelItem.Properties[TriggerPropertyName].Value == null, "Transition trigger should be null.");
bool expandTransition = false;
object expandCollapseViewState = this.ViewStateService.RetrieveViewState(transitionModelItem, ExpandViewStateKey);
if (expandCollapseViewState != null)
{
expandTransition = (bool)expandCollapseViewState;
}
this.TransitionsSharingTrigger.Add(new ExpandableItemWrapper()
{
Item = transitionModelItem,
IsExpanded = expandTransition
});
}
}
}
else
{
this.TransitionsSharingTrigger.Add(wrapper);
}
}
}
}
}
return wrapper;
}