// Tries to figure out what property to select and selects is
private void UpdateSelectedProperty(View.Selection selection)
{
// If we are not loaded, skip any and all selection magic
if (!this.IsLoaded)
{
return;
}
if (selection != null)
{
// See what the view would like us to select if we run out of things
// we can think of selecting
//
SelectionPath fallbackSelection = null;
if (_propertyToolBar.CurrentViewManager != null)
{
fallbackSelection = _propertyToolBar.CurrentViewManager.GetDefaultSelectionPath(_categoryList);
}
// Select the first thing we request that exists, using the following
// precedence order:
//
// * LastSelectionPath
// * DefaultProperty
// * Whatever the view wants to show (first category, first property, ...)
//
_categoryList.UpdateSelectedProperty(
this.LastSelectionPath,
ModelPropertyMerger.GetMergedDefaultProperty(selection.SelectedObjects),
fallbackSelection);
}
if (DesignerPerfEventProvider != null)
{
DesignerPerfEventProvider.PropertyInspectorUpdatePropertyListEnd();
}
}
// This is the work-horse that refreshes the list of properties and categories within a PropertyInspector
// window, including refreshing of CategoryEditors, based on the specified selection
private void UpdateCategories(View.Selection selection, bool attachedOnly)
{
// Optimization stolen from Sparkle:
// re-rendering the categories is the number one perf issue. Clearing
// the databound collection results in massive Avalon code execution, and
// then re-adding everything causes another huge shuffle. What is more,
// even when changing the selection between different objects, most properties
// do not change. Therefore we are going to take the new list of properties
// and we are going to merge them into the existing stuff, using an
// approach I call Mark, Match, and Cull.
//
// First we mark all the properties in the current collection. Those which
// are still marked at the end will be culled out
foreach (ModelCategoryEntry category in _categoryList)
{
if (attachedOnly)
{
category.MarkAttachedPropertiesDisassociated();
}
else
{
category.MarkAllPropertiesDisassociated();
}
}
// Second we try to match each property in the list of properties for the newly selected objects
// against something that we already have. If we have a match, then we reset the existing
// ModelPropertyEntry and clear the mark
//
foreach (IEnumerable <ModelProperty> propertySet in
ModelPropertyMerger.GetMergedProperties(
selection == null ? null : selection.SelectedObjects,
selection == null ? 0 : selection.SelectionCount))
{
string propertyName = GetPropertyName(propertySet);
// Specifically filter out the Name property
// PS 40699 - Name is not a special property for WF
//if ("Name".Equals(propertyName))
//{
// continue;
//}
if (attachedOnly && propertyName.IndexOf('.') < 0)
{
continue;
}
ModelPropertyEntry wrappedProperty = _propertyToolBar.CurrentViewManager.AddProperty(propertySet, propertyName, _categoryList);
// Make sure no valid properties get culled out
wrappedProperty.Disassociated = false;
}
// Third, we walk the properties and categories, and we cull out all of the
// marked properties. Empty categories are removed.
//
for (int i = _categoryList.Count - 1; i >= 0; i--)
{
ModelCategoryEntry category = (ModelCategoryEntry)_categoryList[i];
category.CullDisassociatedProperties();
if (category.IsEmpty)
{
_categoryList.RemoveAt(i);
}
}
_categoryList.RefreshFilter();
}