/// <summary>
/// Set description based on the content of the BasicIPASymbol field and the BasicIPAInfo document
/// </summary>
/// <param name="doc">XmlDocument containing the BasicIPAInfo</param>
/// <param name="fJustChangedFeatures"></param>
/// <returns><c>true</c> if the description was changed; <c>false</c> otherwise</returns>
public bool SetFeaturesBasedOnIPA(XmlDocument doc, bool fJustChangedFeatures)
{
int tagLongName = Cache.VwCacheDaAccessor.GetVirtualHandlerName("FsFeatStruc", "LongNameTSS").Tag;
int longNameOldLen = 0;
if (FeaturesOA != null && FeaturesOA.LongName != null)
longNameOldLen = FeaturesOA.LongName.Length;
if (CanAddFeatures(fJustChangedFeatures))
{
string sXPath = "//SegmentDefinition[Representations/Representation[.='" + BasicIPASymbol.Text +
"']]/Features";
XmlNode features = doc.SelectSingleNode(sXPath);
if (features != null)
{
bool fCreatedNewFS = false;
foreach (XmlNode feature in features)
{
if (feature.Name != "FeatureValuePair")
continue;
string sFeature = XmlUtils.GetAttributeValue(feature, "feature");
string sValue = XmlUtils.GetAttributeValue(feature, "value");
int hvoFeature = FsFeatureSystem.GetClosedFeature(m_cache, sFeature);
if (hvoFeature == 0)
continue;
int hvoValue = FsFeatureSystem.GetSymbolicValue(m_cache, sValue);
if (hvoValue == 0)
continue;
if (FeaturesOA == null)
{
FeaturesOA = new FsFeatStruc();
fCreatedNewFS = true;
}
FsClosedValue value = new FsClosedValue();
FeaturesOA.FeatureSpecsOC.Add(value);
value.FeatureRAHvo = hvoFeature;
value.ValueRAHvo = hvoValue;
}
bool madeFeatures = false;
if (FeaturesOA != null && FeaturesOA.FeatureSpecsOC.Count > 0)
{
// notify interested parties of the change
if (fCreatedNewFS)
{
Cache.PropChanged(null, PropChangeType.kpctNotifyAll, Hvo,
(int) PhPhonemeTags.kflidFeatures,
0, 1, 0);
}
Cache.PropChanged(null, PropChangeType.kpctNotifyAll, FeaturesOA.Hvo,
(int)FsFeatStruc.FsFeatStrucTags.kflidFeatureSpecs,
0, FeaturesOA.FeatureSpecsOC.Count, 0);
FeaturesOA.UpdateFeatureLongName(tagLongName, longNameOldLen);
madeFeatures = true;
}
return madeFeatures;
}
}
else if (BasicIPASymbol.Length == 0 && fJustChangedFeatures)
{
if (FeaturesOA != null)
{
// user has cleared the basic IPA symbol; clear the features
int iCount = FeaturesOA.FeatureSpecsOC.Count;
FeaturesOA.FeatureSpecsOC.RemoveAll();
// notify interested parties of the change
Cache.PropChanged(null, PropChangeType.kpctNotifyAll, FeaturesOA.Hvo,
(int) FsFeatStruc.FsFeatStrucTags.kflidFeatureSpecs,
0, 0, iCount);
FeaturesOA.UpdateFeatureLongName(tagLongName, longNameOldLen);
}
return true;
}
return false;
}
public override ITsString DisplayVariant(IVwEnv vwenv, int tag, object v, int frag)
{
CheckDisposed();
// we use display variant to display literal strings that are editable
ITsString tss = null;
switch (frag)
{
case kfragEmpty:
tss = m_empty;
break;
case kfragFeatureLine:
IFsClosedValue value = new FsClosedValue(m_cache, vwenv.CurrentObject());
tss = CreateFeatureLine(value);
break;
case kfragPlusVariableLine:
case kfragMinusVariableLine:
IPhFeatureConstraint var = new PhFeatureConstraint(m_cache, vwenv.CurrentObject());
tss = CreateVariableLine(var, frag == kfragPlusVariableLine);
break;
case kfragIterCtxtMax:
// if the max value is -1, it indicates that it is infinite
int i = (int)v;
if (i == -1)
tss = m_infinity;
else
tss = m_cache.MakeUserTss(Convert.ToString(i));
break;
case kfragLeftBracketUpHook:
tss = m_leftBracketUpHook;
break;
case kfragLeftBracketExt:
tss = m_leftBracketExt;
break;
case kfragLeftBracketLowHook:
tss = m_leftBracketLowHook;
break;
case kfragRightBracketUpHook:
tss = m_rightBracketUpHook;
break;
case kfragRightBracketExt:
tss = m_rightBracketExt;
break;
case kfragRightBracketLowHook:
tss = m_rightBracketLowHook;
break;
case kfragLeftBracket:
tss = m_leftBracket;
break;
case kfragRightBracket:
tss = m_rightBracket;
break;
case kfragQuestions:
tss = m_questions;
break;
case kfragLeftParen:
tss = m_leftParen;
break;
case kfragRightParen:
tss = m_rightParen;
break;
case kfragXVariable:
tss = m_x;
break;
case kfragZeroWidthSpace:
tss = m_zwSpace;
break;
}
return tss;
}