/// <summary>
/// TRANSACTIONS INSIDE.
/// Execute all operators in three steps.
/// Also checks host problem, if any, fix and prompt user
/// to restart operation.
/// </summary>
public static void Operation123(Document _doc, IEnumerable <ElementOperator> _ops)
{
var removers = _ops.Where(x => x is ElementRemover);
var nonRemovers = _ops.Where(x => x is ElementRemover == false);
var ds = new DialogSuppressor();
string errorMsg = "操作未完成。";
using (Transaction trans = new Transaction(_doc, "preprocess"))
{
ds.UseInTransaction(trans);
trans.Start();
foreach (var op in nonRemovers)
{
op.PreProcess();
}
trans.Commit();
if (trans.GetStatus() != TransactionStatus.Committed)
{
throw new TransactionNotCommitedException(errorMsg);
}
}
execute:
using (Transaction trans = new Transaction(_doc, "execute"))
{
ds.UseInTransaction(trans);
trans.Start();
foreach (var op in nonRemovers)
{
if (!op.Cancel)
{
op.Execute();
}
}
if (FamilyCreator.HostsWithInstanceFaceProblem.Count > 0)
{
trans.RollBack();
}
else
{
trans.Commit();
if (trans.GetStatus() != TransactionStatus.Committed)
{
throw new TransactionNotCommitedException(errorMsg);
}
}
}
//the geometry face retrieved from it might be in one of two states:
//A, directly retrieved from instance. The stable reference string does not contain "INSTANCE", or;
//B, retrieved from symbol geometry first, then apply instance transform. The stable reference string contains "INSTANCE".
//State B might result in failure of creating new instance on face, even when the line stays
//perfectly inside face.
//To avoid this problem, a face with state A must be ensured.
//A join operation of the host will make sure that faces retrieve from it
//will always be in state A.
if (FamilyCreator.HostsWithInstanceFaceProblem.Count > 0)
{
UserMessages.ShowMessage("某些主体图元导致本次操作失败。已修复这些图元，请重新进行操作。");
using (Transaction trans = new Transaction(_doc, "fix"))
{
ds.UseInTransaction(trans);
trans.Start();
foreach (var host in FamilyCreator.HostsWithInstanceFaceProblem)
{
HostUtils.FixInstanceFaceProblem(host);
}
trans.Commit();
}
}
FamilyCreator.HostsWithInstanceFaceProblem.Clear();
using (Transaction trans = new Transaction(_doc, "postprocess"))
{
ds.UseInTransaction(trans);
trans.Start();
foreach (var op in nonRemovers)
{
if (!op.Cancel)
{
op.PostProcess();
}
}
trans.Commit();
if (trans.GetStatus() != TransactionStatus.Committed)
{
throw new TransactionNotCommitedException(errorMsg);
}
}
//hand and facing need second round of set.
var ctrs = nonRemovers
.Where(x => x is WallBasedFamilyCreator ||
x is FaceBasedFamilyCreator).ToList();
if (ctrs.Count > 0)
{
using (Transaction trans = new Transaction(_doc, "postprocess 2"))
{
ds.UseInTransaction(trans);
trans.Start();
foreach (var ctr in ctrs)
{
if (!ctr.Cancel)
{
ctr.PostProcess();
}
}
trans.Commit();
if (trans.GetStatus() != TransactionStatus.Committed)
{
throw new TransactionNotCommitedException(errorMsg);
}
}
}
//delete elements
using (Transaction trans = new Transaction(_doc, "delete"))
{
trans.Start();
foreach (var op in removers)
{
op.Execute();
}
trans.Commit();
}
}