/// <summary>
/// If the paragraph sequence for the text has changed, reparse it completely
/// and issue PropChanges for any changed segment sequences. Return true if it
/// was dealt with (including if it has been deleted).
/// </summary>
/// <returns></returns>
public bool HandleMajorTextChange(int btWs)
{
if (!m_stText.IsValidObject())
return true;
if (ParaSequenceChanged())
{
bool fDidParse;
ParagraphParserOptions options = new ParagraphParserOptions();
options.SuppressSubTasks = false; // this is part of an edit, for it to be undoable the side effects need to be
options.CreateRealSegments = true; // we will attach free translations, which requires them to be real.
ParagraphParser.ParseText(m_stText, options, new NullProgressState(), out fDidParse);
StTxtPara.LoadSegmentFreeTranslations(m_stText.ParagraphsOS.HvoArray, m_stText.Cache, btWs);
Set<int> oldParas = new Set<int>(m_paras.Count);
foreach (ParaStateInfo info in m_paras)
{
info.HandleSegPropChanged(m_stText.Cache);
oldParas.Add(info.HvoPara);
}
int kflidSegments = StTxtPara.SegmentsFlid(m_stText.Cache);
if (m_fCheckOtherParasOfText)
{
foreach (int hvoPara in m_stText.ParagraphsOS.HvoArray)
{
if (!oldParas.Contains(hvoPara))
{
// A new paragraph. Possibly some segments got created for it after it was
// displayed.
int cseg = m_stText.Cache.GetVectorSize(hvoPara, kflidSegments);
if (cseg > 0)
m_stText.Cache.PropChanged(hvoPara, kflidSegments, 0, cseg, 0);
}
}
}
return true;
}
return false;
}
/// <summary>
/// We suspect there has been a significant change to the segments of the selected paragraph.
/// Reparse it and issue a PropChanged if needed.
/// </summary>
/// <param name="btWs"></param>
public void HandleMajorParaChange(int btWs)
{
ParagraphParserOptions options = new ParagraphParserOptions();
options.SuppressSubTasks = false; // this is part of some undoable task, the side effects need to be undoable, too.
// This is surprisingly important. If LoadSegmentFreeTranslations has to convert dummy segments to real,
// it issues PropChanged calls; but when new segments are being added, this method gets called before the Views
// code has been informed of the extra ones. We may end up replacing ones it doesn't know are there, resulting
// in fall-back behavior that produces strange results when we later send the PropChanged from the old segment
// list to the new one. It's also more efficient, since we're going to want real segments, to make them right away.
options.CreateRealSegments = true;
ParagraphParser.ParseParagraph(CmObject.CreateFromDBObject(m_stText.Cache, m_hvoPara, false) as StTxtPara, options);
StTxtPara.LoadSegmentFreeTranslations(new int[] {m_hvoPara}, m_stText.Cache, btWs);
foreach (ParaStateInfo info in m_paras)
if (info.HvoPara == m_hvoPara)
{
info.HandleSegPropChanged(m_stText.Cache);
return;
}
}
private static void ParseTextCore(IStText text, ParagraphParserOptions options, ProgressState progress)
{
using (ParagraphParser pp = new ParagraphParser(text.Cache))
{
pp.SetOptions(options);
if (options.ResetConcordance)
(text.Cache.LangProject.WordformInventoryOA as WordformInventory).ResetAllWordformOccurrences();
if (text.LastParsedTimestamp != 0)
{
// We actually have parsed before...yet we have to again. Possibly another program changed
// the data. Reload it as efficiently as possible.
string sql = "select Id, UpdStmp, Contents, Contents_Fmt from StTxtPara_ where Owner$ = " + text.Hvo + " order by OwnOrd$";
IDbColSpec dcs = DbColSpecClass.Create();
dcs.Push((int)DbColType.koctObjVecOwn, 0, (int)StText.StTextTags.kflidParagraphs, 0);
dcs.Push((int)DbColType.koctTimeStamp, 1, 0, 0);
dcs.Push((int)DbColType.koctString, 1, (int)StTxtPara.StTxtParaTags.kflidContents, 0);
dcs.Push((int)DbColType.koctFmt, 1, (int)StTxtPara.StTxtParaTags.kflidContents, 0);
text.Cache.VwOleDbDaAccessor.Load(sql, dcs, text.Hvo, 0, null, false);
}
pp.SalvageDummyAnnotations(text);
pp.Parse(text, progress);
text.RecordParseTimestamp();
pp.AddEntryGuesses(progress);
pp.CleanupLeftoverAnnotations(progress);
}
}
private void SetOptions(ParagraphParserOptions options)
{
CollectWordformOccurrencesInTexts = options.CollectWordformOccurrencesInTexts;
m_fCreateRealSegments = options.CreateRealSegments;
CreateDummyWordforms = !options.CreateRealWordforms;
m_fSuppressSubTasks = options.SuppressSubTasks;
// Enhance: figure how to obey options.UseRealData;
// options.ResetConcordance is used in the calling method to decide whether to ResetAllWordformOccurrences on the Wfi
}
/// <summary>
/// Parse a text. Return true if successful. May fail because (a) no contents; (b) too long.
/// Determining that the text doesn't need parsing counts as success.
/// Todo: arrange to be able to Undo this, restoring the previous annotations.
/// </summary>
/// <param name="text"></param>
/// <param name="fSuppressSubTasks">true if we don't want to be able to Undo.</param>
/// <param name="fDidParse">True if an actual parse occurred and we need to reload.</param>
/// <returns>True if successful</returns>
public static bool ParseText(IStText text, bool fSuppressSubTasks, ProgressState progress, out bool fDidParse)
{
ParagraphParserOptions options = new ParagraphParserOptions();
options.SuppressSubTasks = fSuppressSubTasks;
return ParseText(text, options, progress, out fDidParse);
}
public static bool ParseText(IStText text, ParagraphParserOptions options, ProgressState progress, out bool fDidParse)
{
fDidParse = false;
if (text == null || !text.IsValidObject())
return false;
if (text.ParagraphsOS.Count == 0)
return false;
#if DEBUG
//TimeRecorder.Begin("deciding whether to parse para");
#endif
if (text.IsUpToDate())
return true;
#if DEBUG
//TimeRecorder.End("deciding whether to parse para");
#endif
fDidParse = true; // we're going to parse!
#if DEBUG
//TimeRecorder.Begin("parse text");
#endif
if (progress is MilestoneProgressState)
{
MilestoneProgressState mp = progress as SIL.FieldWorks.Common.Controls.MilestoneProgressState;
AddParseTextMilestones(mp);
}
// Reparsing a whole text, words may have moved from one paragraph to another.
// Do the whole with a single ParagraphParser.
#if DEBUG
//TimeRecorder.Begin("setup");
#endif
ParagraphParser.ResetParseSessionDependentStaticData();
WordformInventory wfi = (text.Cache.LangProject.WordformInventoryOA as WordformInventory);
if (options.SuppressSubTasks)
{
using (SuppressSubTasks suppressor = new SuppressSubTasks(text.Cache, true))
{
ParseTextCore(text, options, progress);
}
}
else
{
ParseTextCore(text, options, progress);
}
return true; // succeeded.
#if DEBUG
//TimeRecorder.End("note parse times");
//TimeRecorder.Report();
#endif
}
private void ParseWithOptionsCore(IStTxtPara para, ParagraphParserOptions options)
{
ParagraphParser.ResetParseSessionDependentStaticData();
if (options.ResetConcordance)
(Cache.LangProject.WordformInventoryOA as WordformInventory).ResetAllWordformOccurrences();
CollectWordformOccurrencesInTexts = options.CollectWordformOccurrencesInTexts;
CreateDummyWordforms = !options.CreateRealWordforms;
Parse(para, options.UseRealData);
}
private void ParseWithOptions(IStTxtPara para, ParagraphParserOptions options)
{
m_fSuppressSubTasks = options.SuppressSubTasks;
m_fCreateRealSegments = options.CreateRealSegments;
if (options.SuppressSubTasks)
{
using (SuppressSubTasks suppressor = new SuppressSubTasks(Cache, true))
{
ParseWithOptionsCore(para, options);
}
}
else
{
ParseWithOptionsCore(para, options);
}
}
private static void ParseParagraph(IStTxtPara para, int tagSegments, int tagSegForms, ParagraphParserOptions options)
{
using (ParagraphParser pp = new ParagraphParser(para.Cache, tagSegments, tagSegForms))
{
pp.ParseWithOptions(para, options);
}
}
/// <summary>
/// Parse a single paragraph with the specified options.
/// </summary>
public static void ParseParagraph(IStTxtPara para, ParagraphParserOptions options)
{
ParseParagraph(para, InterlinVc.ParaSegmentTag(para.Cache), InterlinVc.SegmentFormsTag(para.Cache), options);
}
/// <summary>
/// We override this to check that segments are properly loaded. Normally this is done by LoadDataForStText
/// when the containing section (the smallest lazy element) is loaded, but that doesn't run when we insert a paragraph.
/// </summary>
protected override void InsertBtSegments(StVc vc, IVwEnv vwenv, int hvo)
{
int kflidSegments = StTxtPara.SegmentsFlid(Cache);
if (!Cache.MainCacheAccessor.get_IsPropInCache(hvo, kflidSegments, (int)CellarModuleDefns.kcptReferenceSequence, 0))
{
StTxtPara para = CmObject.CreateFromDBObject(Cache, hvo) as StTxtPara;
ParagraphParserOptions options = new ParagraphParserOptions();
options.CreateRealSegments = true;
ParagraphParser.ParseParagraph(para, options);
StTxtPara.LoadSegmentFreeTranslations(new int[] {hvo}, Cache, BackTranslationWS);
// This is probably redundant, AFAIK this can only happen for newly created paragraphs,
// but it's safe and (for the same reason) rare.
if (para.HasNoSegmentBt(BackTranslationWS))
ConvertOldBtToNew(para);
}
base.InsertBtSegments(vc, vwenv, hvo);
}
