/// <summary>
/// Set new categories, this method will possibly update existing criteria
/// </summary>
/// <param name="newCatIds">New categories for current filter.</param>
/// <returns>true if categories or criteria are changed; otherwise false.</returns>
/// <remarks>
/// If someone parameter of criteria cannot be supported by new categories,
/// the old criteria will be cleaned and set to empty
/// </remarks>
public bool SetNewCategories(ICollection <ElementId> newCatIds)
{
// do nothing if new categories are equals to old categories
List <BuiltInCategory> newCats = new List <BuiltInCategory>();
foreach (ElementId catId in newCatIds)
{
newCats.Add((BuiltInCategory)catId.IntegerValue);
}
if (ListCompareUtility <BuiltInCategory> .Equals(newCats, m_filterCategories))
{
return(false);
}
m_filterCategories = newCats; // update categories
//
// Check if need to update file rules:
// . if filer rule is empty, do nothing
// . if some parameters of rules cannot be supported by new categories, clean all old rules
ICollection <ElementId> supportParams =
ParameterFilterUtilities.GetFilterableParametersInCommon(m_doc, newCatIds);
foreach (FilterRuleBuilder rule in m_filterRules)
{
if (!supportParams.Contains(new ElementId(rule.Parameter)))
{
m_filterRules.Clear();
break;
}
}
return(true);
}
/// <summary>
/// Update ParameterFilterElement within document with
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void okButton_Click(object sender, EventArgs e)
{
// Reserve how many Revit filters need to be updated/removed
ICollection <String> updatedFilters = new List <String>();
ICollection <ElementId> deleteElemIds = new List <ElementId>();
FilteredElementCollector collector = new FilteredElementCollector(m_doc);
ICollection <Element> oldFilters = collector.OfClass(typeof(ParameterFilterElement)).ToElements();
//
// Start transaction to update filters now
Transaction tran = new Transaction(m_doc, "Update View Filter");
tran.Start();
try
{
// 1. Update existing filters
foreach (ParameterFilterElement filter in oldFilters)
{
FilterData filterData;
bool bExist = m_dictFilters.TryGetValue(filter.Name, out filterData);
if (!bExist)
{
deleteElemIds.Add(filter.Id);
continue;
}
//
// Update Filter categories and filter rules for this filter
ICollection <ElementId> newCatIds = filterData.GetCategoryIds();
if (!ListCompareUtility <ElementId> .Equals(filter.GetCategories(), newCatIds))
{
filter.SetCategories(newCatIds);
}
IList <FilterRule> newRules = new List <FilterRule>();
foreach (FilterRuleBuilder ruleData in filterData.RuleData)
{
newRules.Add(ruleData.AsFilterRule());
}
filter.SetRules(newRules);
updatedFilters.Add(filter.Name);
}
//
// 2. Delete some filters
if (deleteElemIds.Count > 0)
{
m_doc.Delete(deleteElemIds);
}
//
// 3. Create new filters(if have)
foreach (KeyValuePair <String, FilterData> myFilter in m_dictFilters)
{
// If this filter is updated, do nothing
if (updatedFilters.Contains(myFilter.Key))
{
continue;
}
//
// Create new filter now if filter not exist yet
IList <FilterRule> rules = new List <FilterRule>();
foreach (FilterRuleBuilder ruleData in myFilter.Value.RuleData)
{
rules.Add(ruleData.AsFilterRule());
}
ParameterFilterElement.Create(
m_doc, myFilter.Key, myFilter.Value.GetCategoryIds(), rules);
}
//
// Commit change now
tran.Commit();
}
catch (Exception ex)
{
String failMsg = String.Format("Revit filters update failed and was aborted: " + ex.ToString());
MyMessageBox(failMsg);
tran.RollBack();
}
}