public void MultiStringVirtualHandler()
{
CheckDisposed();
MultiStringVirtualHandler msvh = new MultiStringVirtualHandler("LexDb", "NewString");
m_fdoCache.InstallVirtualProperty(msvh);
Assert.IsTrue(msvh.Writeable);
Assert.AreEqual((int)CellarModuleDefns.kcptMultiString, msvh.Type);
Assert.IsFalse(msvh.ComputeEveryTime);
int hvoLexDb = 0;
if (m_fdoCache.LangProject != null &&
m_fdoCache.LangProject.LexDbOA != null)
{
hvoLexDb = m_fdoCache.LangProject.LexDbOA.Hvo;
}
if (hvoLexDb == 0)
{
// Rather than try to create a real LexDb, simulate one.
hvoLexDb = khvoTest;
}
ISilDataAccess sda = m_fdoCache.MainCacheAccessor;
IVwCacheDa cda = sda as IVwCacheDa;
int wsVern = m_fdoCache.LangProject.DefaultVernacularWritingSystem;
msvh.Load(hvoLexDb, msvh.Tag, wsVern, cda);
ITsStrFactory tsf = TsStrFactoryClass.Create();
ITsString tss = tsf.MakeString("", wsVern);
ITsString tss1 = sda.get_MultiStringAlt(hvoLexDb, msvh.Tag, wsVern);
Assert.IsTrue(tss.Equals(tss1));
Assert.IsTrue(msvh.Writeable);
tss = tsf.MakeString("This is a test", wsVern);
msvh.WriteObj(hvoLexDb, msvh.Tag, wsVern, tss, sda);
cda.CacheStringAlt(hvoLexDb, msvh.Tag, wsVern, tss);
tss1 = sda.get_MultiStringAlt(hvoLexDb, msvh.Tag, wsVern);
Assert.IsTrue(tss.Equals(tss1));
}
/// <summary>
/// This will install a virtual handler for getting and setting temporary strings in each column.
/// </summary>
private void InstallVirtualHandlersForColumns()
{
// handle editableRow attributes
Debug.Assert(m_xbv != null);
FdoCache cache = m_xbv.Cache;
Debug.Assert(cache != null);
IVwCacheDa cda = cache.MainCacheAccessor as IVwCacheDa;
// install a handler for each column
for (int i = 1; i <= m_columns.Count; ++i)
{
string sField = ksEditColumnBaseName + i;
IVwVirtualHandler vh = cda.GetVirtualHandlerName(
EditRowModelClass, sField);
if (vh == null)
{
MultiStringVirtualHandler msvh =
new MultiStringVirtualHandler(EditRowModelClass, sField);
cda.InstallVirtual(msvh);
}
}
}