C++ FLevelModelList::CreateConstIterator方法代码示例

void FLevelCollectionModel::SaveLevels(const FLevelModelList& InLevelList)
{
	if (IsReadOnly())
	{
		return;
	}

		
	FLevelModelList		LevelModelsToSave;
	TArray<ULevel*>		LevelsToSave;
	for (auto It = InLevelList.CreateConstIterator(); It; ++It)
	{
		if ((*It)->GetLevelObject())
		{
			if (!(*It)->IsVisible())
			{
				FMessageDialog::Open( EAppMsgType::Ok, NSLOCTEXT("UnrealEd", "UnableToSaveInvisibleLevels", "Save aborted.  Levels must be made visible before they can be saved.") );
				return;
			}
			else if ((*It)->IsLocked())
			{
				FMessageDialog::Open( EAppMsgType::Ok, NSLOCTEXT("UnrealEd", "UnableToSaveLockedLevels", "Save aborted.  Level must be unlocked before it can be saved.") );
				return;
			}
						
			LevelModelsToSave.Add(*It);
			LevelsToSave.Add((*It)->GetLevelObject());
		}
	}

	TArray< UPackage* > PackagesNotNeedingCheckout;
	// Prompt the user to check out the levels from source control before saving
	if (FEditorFileUtils::PromptToCheckoutLevels(false, LevelsToSave, &PackagesNotNeedingCheckout))
	{
		for (auto It = LevelsToSave.CreateIterator(); It; ++It)
		{
			FEditorFileUtils::SaveLevel(*It);
		}
	}
	else if (PackagesNotNeedingCheckout.Num() > 0)
	{
		// The user canceled the checkout dialog but some packages didn't need to be checked out in order to save
		// For each selected level if the package its in didn't need to be saved, save the level!
		for (int32 LevelIdx = 0; LevelIdx < LevelsToSave.Num(); ++LevelIdx)
		{
			ULevel* Level = LevelsToSave[LevelIdx];
			if (PackagesNotNeedingCheckout.Contains(Level->GetOutermost()))
			{
				FEditorFileUtils::SaveLevel(Level);
			}
			else
			{
				//remove it from the list, so that only successfully saved levels are highlighted when saving is complete
				LevelModelsToSave.RemoveAt(LevelIdx);
				LevelsToSave.RemoveAt(LevelIdx);
			}
		}
	}

	// Select tiles that were saved successfully
	SetSelectedLevels(LevelModelsToSave);
}

void FLevelCollectionModel::SCCDiffAgainstDepot(const FLevelModelList& InList, UEditorEngine* InEditor)
{
	// Load the asset registry module
	FAssetToolsModule& AssetToolsModule = FModuleManager::GetModuleChecked<FAssetToolsModule>("AssetTools");

	ISourceControlProvider& SourceControlProvider = ISourceControlModule::Get().GetProvider();

	// Iterate over each selected asset
	for (auto It = InList.CreateConstIterator(); It; ++It)
	{
		ULevel* Level = (*It)->GetLevelObject();
		if (Level == NULL)
		{
			return;
		}
		
		UPackage* OriginalPackage = Level->GetOutermost();
		FString PackageName = OriginalPackage->GetName();

		// Make sure our history is up to date
		auto UpdateStatusOperation = ISourceControlOperation::Create<FUpdateStatus>();
		UpdateStatusOperation->SetUpdateHistory(true);
		SourceControlProvider.Execute(UpdateStatusOperation, OriginalPackage);

		// Get the SCC state
		FSourceControlStatePtr SourceControlState = SourceControlProvider.GetState(
			OriginalPackage, EStateCacheUsage::Use
			);

		// If the level is in SCC.
		if (SourceControlState.IsValid() && SourceControlState->IsSourceControlled())
		{
			// Get the file name of package
			FString RelativeFileName;
			if(FPackageName::DoesPackageExist(PackageName, NULL, &RelativeFileName))
			{
				if (SourceControlState->GetHistorySize() > 0)
				{
					auto Revision = SourceControlState->GetHistoryItem(0);
					check(Revision.IsValid());

					// Get the head revision of this package from source control
					FString AbsoluteFileName = FPaths::ConvertRelativePathToFull(RelativeFileName);
					FString TempFileName;
					if (Revision->Get(TempFileName))
					{
						// Forcibly disable compile on load in case we are loading old blueprints that might try to update/compile
						TGuardValue<bool> DisableCompileOnLoad(GForceDisableBlueprintCompileOnLoad, true);

						// Try and load that package
						FText NotMapReason;
						UPackage* OldPackage = LoadPackage(NULL, *TempFileName, LOAD_None);
						if(OldPackage != NULL && InEditor->PackageIsAMapFile(*TempFileName, NotMapReason))
						{
							/* Set the revision information*/
							UPackage* Package = OriginalPackage;

							FRevisionInfo OldRevision;
							OldRevision.Changelist = Revision->GetCheckInIdentifier();
							OldRevision.Date = Revision->GetDate();
							OldRevision.Revision = Revision->GetRevision();

							FRevisionInfo NewRevision; 
							NewRevision.Revision = TEXT("");

							// Dump assets to temp text files
							FString OldTextFilename = AssetToolsModule.Get().DumpAssetToTempFile(OldPackage);
							FString NewTextFilename = AssetToolsModule.Get().DumpAssetToTempFile(OriginalPackage);
							FString DiffCommand = GetDefault<UEditorLoadingSavingSettings>()->TextDiffToolPath.FilePath;

							AssetToolsModule.Get().CreateDiffProcess(DiffCommand, OldTextFilename, NewTextFilename);
							AssetToolsModule.Get().DiffAssets(OldPackage, OriginalPackage, OldRevision, NewRevision);
						}
					}
				}
			} 
		}
	}
}