private void DoSuggestTask(ProgressState state)
		{
			var newCol = -1;
			if (PreviewOn)
			{
				// Clear the previous preview
				DoClearPreviewTask(state);
			}
			PreviewOn = true;

			if (m_operationsTabControl.SelectedTab == m_listChoiceTab)
			{
				if (m_itemIndex >= 0)
				{
					MakeSuggestions(state);
					newCol = m_itemIndex + 1;
				}
			}
			else
			{
				MessageBox.Show(this, XMLViewsStrings.ksSorryNoPreview, XMLViewsStrings.ksUnimplFeature);
				PreviewOn = false; // Didn't actually happen
			}

			if (newCol > 0)
			{
				// Use the BrowseViewer special 'decorator' SDA.
				m_bv.SpecialCache.SetInt(m_bv.RootObjectHvo, XMLViewsDataCache.ktagActiveColumn, newCol);
			}
		}

		/// <summary>
		/// Despite being public where the other SetDlgInfo is internal, this is a "special-case"
		/// initialization method not used in Flex, but in TE, where there is not a pre-existing mediator
		/// for each main window. This initializer obtains the configuration parameters and sets up a
		/// suitable mediator. In doing so it duplicates knowledge from various places:
		/// 1. Along with the code that initializes xWindow and various other places, it 'knows' where
		/// to find the configuration node for the respeller dialog.
		/// 2. It duplicates some of the logic in FwXWindow.InitMediatorValues and RestoreProperties,
		/// knowing the LocalSettingsId and how to use it to restore mediator properties, and what items
		/// must be in the mediator. Also logic in xWindow for restoring global settings.
		/// 3. It knows how to initialize a number of virtual properties normally created as part of
		/// FLEx's startup code.
		/// 4. It knows how to set up the string table that Flex uses.
		/// 5. It knows how to initialize the Flex part inventories.
		/// </summary>
		public bool SetDlgInfo(IWfiWordform wf, Form parent, IApp app)
		{
			if (wf == null)
				throw new ArgumentNullException("wf");
			if (parent == null)
				throw new ArgumentNullException("parent");
			if (app == null)
				throw new ArgumentNullException("app");

			using (var dlg = new ProgressDialogWorkingOn())
			{
				dlg.Owner = parent;
				dlg.Text = MEStrings.ksFindingOccurrences;
				dlg.WorkingOnText = MEStrings.ksSearchingOccurrences;
				dlg.ProgressLabel = MEStrings.ksProgress;
				dlg.Show(ActiveForm);
				dlg.Update();
				dlg.BringToFront();
				//var progressState = new MilestoneProgressState(dlg.ProgressDisplayer);
				try
				{
					m_cache = wf.Cache;
					m_srcwfiWordform = wf;
					// Get the parameter node.
					var path = Path.Combine(FwDirectoryFinder.GetCodeSubDirectory(
						Path.Combine(FwUtils.ksFlexAppName, Path.Combine("Configuration", "Words"))), "areaConfiguration.xml");
					var doc = XWindow.LoadConfigurationWithIncludes(path, true);
					var paramNode = doc.DocumentElement.SelectSingleNode("listeners/listener[@class=\"SIL.FieldWorks.XWorks.MorphologyEditor.RespellerDlgListener\"]/parameters");
					Debug.Assert(paramNode != null);
					// Initialize a mediator.
					var mediator = new Mediator();
					m_fDisposeMediator = true;
					// Copied from FwXWindow.InitMediatorValues
					mediator.PropertyTable.LocalSettingsId = "local";
					mediator.PropertyTable.SetProperty("cache", m_cache);
					mediator.PropertyTable.SetPropertyPersistence("cache", false);

					string userPath = DirectoryFinder.UserAppDataFolder(app.ApplicationName);
					Directory.CreateDirectory(userPath);
					mediator.PropertyTable.UserSettingDirectory = userPath;

					//// Enhance JohnT: possibly these three lines (also copied) are not needed.
					//mediator.PropertyTable.SetProperty("DocumentName", GetMainWindowCaption(cache));
					//mediator.PropertyTable.SetPropertyPersistence("DocumentName", false);
					mediator.PathVariables["{DISTFILES}"] = FwDirectoryFinder.CodeDirectory;
					mediator.PropertyTable.RestoreFromFile(mediator.PropertyTable.GlobalSettingsId);
					mediator.PropertyTable.RestoreFromFile(mediator.PropertyTable.LocalSettingsId);
					//progressState.SetMilestone();
					// Set this AFTER the restore! Otherwise it goes away!
					mediator.PropertyTable.SetProperty("window", dlg.Owner);
					mediator.PropertyTable.SetPropertyPersistence("window", false);

					string directoryContainingConfiguration = Path.Combine(FwDirectoryFinder.FlexFolder, "Configuration");
					StringTable table = new StringTable(directoryContainingConfiguration);
					mediator.StringTbl = table;
					mediator.FeedbackInfoProvider = (IFeedbackInfoProvider)app;
					//progressState.SetMilestone();
					//progressState.SetMilestone();

					LayoutCache.InitializePartInventories(m_cache.ProjectId.Name, app, m_cache.ProjectId.ProjectFolder);
					//progressState.SetMilestone();

					// Get all the scripture texts.
					// Review: should we include IText ones too?
					// NB: The ownership check is designed to exclude archived drafts.
					// The second half collects footnotes and the title of the book.
					var stTextRepos = m_cache.ServiceLocator.GetInstance<IStTextRepository>();
					var unarchivedScriptureTexts = m_cache.LangProject.TranslatedScriptureOA.StTexts.ToList();
					//progressState.SetMilestone();

					// Build concordance info, including the occurrence list for our wordform.
					ProgressState state = new ProgressState(dlg.ProgressDisplayer);
					// This is an ugly way of getting the state to the RespellingSda method
					mediator.PropertyTable.SetProperty("SpellingPrepState", state);
					mediator.PropertyTable.SetPropertyPersistence("SpellingPrepState", false);
					NonUndoableUnitOfWorkHelper.Do(m_cache.ActionHandlerAccessor,
						() =>
							{
								int done = 0;
								int total = unarchivedScriptureTexts.Count;
								foreach (var txt in unarchivedScriptureTexts)
								{
									done++;
									foreach (IStTxtPara para in txt.ParagraphsOS)
									{
//.........这里部分代码省略.........

		public void FakeDoit(Set<int> itemsToChange, int tagFakeFlid, int tagEnable, ProgressState state)
		{
			CheckDisposed();

			IVwCacheDa cda = m_cache.VwCacheDaAccessor;
			ISilDataAccess sda = m_cache.MainCacheAccessor;
			ITsString tss = m_cache.MakeAnalysisTss(m_selectedLabel);
			int i = 0;
			// Report progress 50 times or every 100 items, whichever is more (but no more than once per item!)
			int interval = Math.Min(100, Math.Max(itemsToChange.Count / 50, 1));
			foreach (int hvo in itemsToChange)
			{
				i++;
				if (i % interval == 0)
				{
					state.PercentDone = i * 100 / itemsToChange.Count;
					state.Breath();
				}
				bool fEnable = CanFakeIt(hvo);
				if (fEnable)
					cda.CacheStringProp(hvo, tagFakeFlid, tss);
				cda.CacheIntProp(hvo, tagEnable, (fEnable ? 1 : 0));
			}
		}

		public override void FakeDoit(IEnumerable<int> itemsToChange, int tagFakeFlid, int tagEnabled, ProgressState state)
		{
			m_complexEntryRefs = null;	// reset the filtered entry refs cache.
			base.FakeDoit(itemsToChange, tagFakeFlid, tagEnabled, state);
		}

		public override void DoIt(IEnumerable<int> itemsToChange, ProgressState state)
		{
			UndoableUnitOfWorkHelper.Do(XMLViewsStrings.ksUndoBulkEdit, XMLViewsStrings.ksRedoBulkEdit, m_cache.ActionHandlerAccessor,
				() =>
					{
						ISilDataAccess sda = m_cache.DomainDataByFlid;

						HvoTssComboItem item = m_combo.SelectedItem as HvoTssComboItem;
						if (item == null)
							return;
						int hvoSelMorphType = item.Hvo;
						bool fSelAffix = false;
						if (hvoSelMorphType != 0)
							fSelAffix = MorphServices.IsAffixType(m_cache, hvoSelMorphType);
						bool fAnyFundamentalChanges = false;
						// Preliminary check and warning if changing fundamental type.
						foreach (int hvoLexEntry in itemsToChange)
						{
							int hvoLexemeForm = sda.get_ObjectProp(hvoLexEntry, m_flidParent);
							if (hvoLexemeForm == 0)
								continue;
							int hvoMorphType = sda.get_ObjectProp(hvoLexemeForm, m_flidAtomicProp);
							if (hvoMorphType == 0)
								continue;
							bool fAffix = MorphServices.IsAffixType(m_cache, hvoMorphType);
							if (fAffix != fSelAffix && hvoSelMorphType != 0)
							{
								string msg = String.Format(XMLViewsStrings.ksMorphTypeChangesSlow,
									(fAffix ? XMLViewsStrings.ksAffixes : XMLViewsStrings.ksStems),
									(fAffix ? XMLViewsStrings.ksStems : XMLViewsStrings.ksAffixes));
								if (MessageBox.Show(this.m_combo, msg, XMLViewsStrings.ksChangingMorphType,
									MessageBoxButtons.OKCancel,
									MessageBoxIcon.Warning) != DialogResult.OK)
								{
									return;
								}
								fAnyFundamentalChanges = true;
								break; // user OKd it, no need to check further.
							}
						}
						if (fAnyFundamentalChanges)
						{
							m_containingViewer.SetListModificationInProgress(true);
						}
						try
						{
							// Report progress 50 times or every 100 items, whichever is more
							// (but no more than once per item!)
							Set<int> idsToDel = new Set<int>();
							var newForms = new Dictionary<IMoForm, ILexEntry>();
							int interval = Math.Min(80, Math.Max(itemsToChange.Count()/50, 1));
							int i = 0;
							foreach (int hvoLexEntry in itemsToChange)
							{
								// Guess we're 80% done when through all but deleting leftover objects and moving
								// new MoForms to LexemeForm slot.
								if ((i + 1)%interval == 0)
								{
									state.PercentDone = i*80/itemsToChange.Count();
									state.Breath();
								}
								i++;
								int hvoLexemeForm = sda.get_ObjectProp(hvoLexEntry, m_flidParent);
								if (hvoLexemeForm == 0)
									continue;
								int hvoMorphType = sda.get_ObjectProp(hvoLexemeForm, m_flidAtomicProp);
								if (hvoMorphType == 0)
									continue;
								bool fAffix = MorphServices.IsAffixType(m_cache, hvoMorphType);
								var stemAlloFactory = m_cache.ServiceLocator.GetInstance<IMoStemAllomorphFactory>();
								var afxAlloFactory = m_cache.ServiceLocator.GetInstance<IMoAffixAllomorphFactory>();
								if (fAffix == fSelAffix)
								{
									// Not changing C# type of allomorph object, just set the morph type.
									if (hvoMorphType != hvoSelMorphType)
									{
										sda.SetObjProp(hvoLexemeForm, m_flidAtomicProp, hvoSelMorphType);
									}
								}
								else if (fAffix)
								{
									// Changing from affix to stem, need a new allomorph object.
									var entry = m_cache.ServiceLocator.GetInstance<ILexEntryRepository>().GetObject(hvoLexEntry);
									var affix = m_cache.ServiceLocator.GetInstance<IMoAffixAllomorphRepository>().GetObject(hvoLexemeForm);
									var stem = stemAlloFactory.Create();
									SwapFormValues(entry, affix, stem, hvoSelMorphType, idsToDel);
									foreach (var env in affix.PhoneEnvRC)
										stem.PhoneEnvRC.Add(env);
									newForms[stem] = entry;
								}
								else
								{
									// Changing from stem to affix, need a new allomorph object.
									var entry = m_cache.ServiceLocator.GetInstance<ILexEntryRepository>().GetObject(hvoLexEntry);
									var stem = m_cache.ServiceLocator.GetInstance<IMoStemAllomorphRepository>().GetObject(hvoLexemeForm);
									var affix = afxAlloFactory.Create();
									SwapFormValues(entry, stem, affix, hvoSelMorphType, idsToDel);
									foreach (var env in stem.PhoneEnvRC)
										affix.PhoneEnvRC.Add(env);
									newForms[affix] = entry;
//.........这里部分代码省略.........

		/// <summary>
		/// Tells SemanticDomainChooserBEditControl to make suggestions and then call FakeDoIt
		/// </summary>
		public override void MakeSuggestions(IEnumerable<int> itemsToChange, int tagFakeFlid, int tagEnabled, ProgressState state)
		{
			m_doingSuggest = true;
			ChosenObjects = new List<ICmObject>(0);
			// Unfortunately ProgressState is from FwControls which depends on FDO, so passing it as a parameter
			// to the searchCache's InitializeCache method would result in a circular dependency.
			state.PercentDone = 15;
			state.Breath(); // give the user a LITTLE hope that things are happening!
			// Should be the only time we need to loop through all the Semantic Domains
			m_searchCache.InitializeCache();
			m_suggestionCache = new Dictionary<int, List<ICmObject>>();
			base.FakeDoit(itemsToChange, tagFakeFlid, tagEnabled, state);
			if (SomeChangesAreWaiting(itemsToChange, tagEnabled))
				EnableButtonsIfChangesWaiting();
		}

		public void Doit(IEnumerable<int> itemsToChange, ProgressState state)
		{
			m_sda.BeginUndoTask(XMLViewsStrings.ksUndoBulkEdit, XMLViewsStrings.ksRedoBulkEdit);
			string commitChanges = XmlUtils.GetOptionalAttributeValue(m_nodeSpec, "commitChanges");
			int i = 0;
			// Report progress 50 times or every 100 items, whichever is more (but no more than once per item!)
			int interval = Math.Min(100, Math.Max(itemsToChange.Count() / 50, 1));
			foreach (int hvo in itemsToChange)
			{
				i++;
				if (i % interval == 0)
				{
					state.PercentDone = i * 100 / itemsToChange.Count();
					state.Breath();
				}
				Doit(hvo);
				BulkEditBar.CommitChanges(hvo, commitChanges, m_cache, m_accessor.WritingSystem);
			}
			m_sda.EndUndoTask();
		}

		private void DoClearPreviewTask(ProgressState state)
		{
			m_bv.SpecialCache.SetInt(m_bv.RootObjectHvo, XMLViewsDataCache.ktagActiveColumn, 0);
			PreviewOn = false;
		}

		/// <summary>
		/// Delete ALL the checked objects!!
		/// </summary>
		private void DeleteSelectedObjects(ProgressState state)
		{
			Set<int> idsToDelete = new Set<int>();
			UpdateCurrentGhostParentHelper(); // needed for code below.
			foreach (int hvo in ItemsToChange(true))
			{
				if (m_bv.SpecialCache.get_IntProp(hvo, XMLViewsDataCache.ktagItemEnabled) != 0)
				{
					if (VerifyRowDeleteAllowable(hvo))
					{
						//allow deletion for the class we expect to be bulk editing.
						int hvoToDelete = 0;
						if (DomainObjectServices.IsSameOrSubclassOf(m_cache.DomainDataByFlid.MetaDataCache,
							m_cache.ServiceLocator.GetInstance<ICmObjectRepository>().GetObject(hvo).ClassID,
							m_expectedListItemsClassId))
							hvoToDelete = hvo;
						else if (m_ghostParentHelper != null)
							hvoToDelete = m_ghostParentHelper.GetOwnerOfTargetProperty(hvo);
						if (hvoToDelete != 0)
							idsToDelete.Add(hvoToDelete);
					}
				}
			}
			bool fUndo;
			if (!CheckMultiDeleteConditionsAndReport(idsToDelete, out fUndo))
				return;
			try
			{
				state.PercentDone = 10;
				state.Breath();
				m_bv.SetListModificationInProgress(true);
				int total = idsToDelete.Count;
				int interval = Math.Min(100, Math.Max(idsToDelete.Count / 90, 1));
				int i = 0;
				UndoableUnitOfWorkHelper.Do(XMLViewsStrings.ksUndoBulkDelete, XMLViewsStrings.ksRedoBulkDelete,
											m_cache.ActionHandlerAccessor,
											() =>
												{
													foreach (int hvo in idsToDelete)
													{
														if ((i + 1) % interval == 0)
														{
															state.PercentDone = i * 90 / idsToDelete.Count + 10;
															state.Breath();
														}
														i++;
														ICmObject obj;
														if (m_cache.ServiceLocator.ObjectRepository.TryGetObject(hvo, out obj))
															m_bv.SpecialCache.DeleteObj(hvo);
													}
													if (m_expectedListItemsClassId == LexEntryTags.kClassId ||
														m_expectedListItemsClassId == LexSenseTags.kClassId)
													{
#if WANTPPORT
														CmObject.DeleteOrphanedObjects(m_cache, fUndo, state);
#endif
													}
												});
				m_bv.SetListModificationInProgress(false);
				ResumeRecordListRowChanges(); // need to show the updated list of rows!
				state.PercentDone = 100;
				state.Breath();
			}
			finally
			{
				// need to recompute what needs to be enabled after the deletion.
				m_items.Clear();
			}
		}

		/// <summary/>
		protected virtual void ShowPreviewItems(ProgressState state)
		{
			BulkEditItem bei = m_beItems[m_itemIndex];
			bei.BulkEditControl.FakeDoit(ItemsToChange(false), XMLViewsDataCache.ktagAlternateValue,
										 XMLViewsDataCache.ktagItemEnabled, state);
		}

		private void DoPreviewTask(ProgressState state)
		{
			var newCol = -1;
			if (PreviewOn)
			{
				// Clear the previous preview
				DoClearPreviewTask(state);
			}
			PreviewOn = true;

			if (m_operationsTabControl.SelectedTab == m_listChoiceTab)
			{
				if (m_itemIndex >= 0)
				{
					ShowPreviewItems(state);
					newCol = m_itemIndex + 1;
				}
			}
			else if (m_operationsTabControl.SelectedTab == m_findReplaceTab)
			{
				ReplaceWithMethod method = MakeReplaceWithMethod(out newCol);
				if (method == null)
					return;
				method.FakeDoit(ItemsToChange(false), XMLViewsDataCache.ktagAlternateValue,
					XMLViewsDataCache.ktagItemEnabled, state);
			}
			else if (m_operationsTabControl.SelectedTab == m_bulkCopyTab)
			{
				BulkCopyMethod method = MakeBulkCopyMethod(out newCol);
				if (method == null)
					return;
				method.FakeDoit(ItemsToChange(false), XMLViewsDataCache.ktagAlternateValue,
					XMLViewsDataCache.ktagItemEnabled, state);
			}
			else if (m_operationsTabControl.SelectedTab == m_transduceTab)
			{
				TransduceMethod method = MakeTransduceMethod(out newCol);
				if (method == null)
					return;
				method.FakeDoit(ItemsToChange(false), XMLViewsDataCache.ktagAlternateValue,
					XMLViewsDataCache.ktagItemEnabled, state);
			}
			else if (m_operationsTabControl.SelectedTab == m_deleteTab && !DeleteRowsItemSelected)
			{
				// clear a field
				if (m_deleteWhatCombo.SelectedItem is TargetFieldItem)
				{
					TargetFieldItem item = m_deleteWhatCombo.SelectedItem as TargetFieldItem;
					int index = item.ColumnIndex;
					BulkEditItem bei = m_beItems[index];
					bei.BulkEditControl.SetClearField();
					bei.BulkEditControl.FakeDoit(ItemsToChange(false), XMLViewsDataCache.ktagAlternateValue,
						XMLViewsDataCache.ktagItemEnabled, state);
					newCol = index + 1;
				}
				else if (m_deleteWhatCombo.SelectedItem is FieldComboItem)
				{
					ClearMethod method = MakeClearMethod(out newCol);
					if (method == null)
						return;
					method.FakeDoit(ItemsToChange(false), XMLViewsDataCache.ktagAlternateValue,
						XMLViewsDataCache.ktagItemEnabled, state);
				}
			}
			else
			{
				MessageBox.Show(this, XMLViewsStrings.ksSorryNoPreview, XMLViewsStrings.ksUnimplFeature);
				PreviewOn = false; // Didn't actually happen
			}

			if (newCol != -1)
			{
				// Use the BrowseViewer special 'decorator' SDA.
				m_bv.SpecialCache.SetInt(m_bv.RootObjectHvo, XMLViewsDataCache.ktagActiveColumn, newCol);
			}
		}

		public abstract void DoIt(Set<int> itemsToChange, ProgressState state);

		/// <summary>
		/// This method is the one to override if you need side effects when DeleteUnderlyingObject
		/// is called. If other objects should be deleted also, do NOT delete them directly; this
		/// tends to produce abysmal performance. Rather, add them to objectsToDeleteAlso, and the
		/// whole lot (including this) will be deleted in one relatively efficient operation.
		/// You should not modify objectsToDeleteAlso except to add HVOs to it.
		/// You must not use the FDO object after calling this, it has been put into the deleted state.
		/// </summary>
		/// <param name="objectsToDeleteAlso">hashtable of HVOs (value typically just true, it's really a set).</param>
		/// <param name="state"></param>
		public override void DeleteObjectSideEffects(Set<int> objectsToDeleteAlso, ProgressState state)
		{
			if (Owner.ClassID == PhMetathesisRule.kclsidPhMetathesisRule)
			{
				// update the StrucChange field to reflect the removed simple context
				IPhMetathesisRule rule = Owner as IPhMetathesisRule;
				int removeCtxt = rule.UpdateStrucChange(rule.GetStrucChangeIndex(Hvo), IndexInOwner, false);
				if (removeCtxt != 0)
					objectsToDeleteAlso.Add(removeCtxt);
			}

			base.DeleteObjectSideEffects(objectsToDeleteAlso, state);
		}