private bool _LockDocument(TsfSharp.TsLfFlags dwLockFlags)
{
if (_locked)
{
return(false);
}
_locked = true;
_lockFlags = dwLockFlags;
return(true);
}
public void RequestLock(TsfSharp.TsLfFlags dwLockFlags, out Result hrSession)
{
if (_sink == null)
{
throw new COMException("TextStore_NoSink");
}
if (dwLockFlags == 0)
{
throw new COMException("TextStore_BadLockFlags");
}
hrSession = Result.Fail;
if (_locked)
{
//the document is locked
if ((dwLockFlags & TsfSharp.TsLfFlags.Sync) == TsfSharp.TsLfFlags.Sync)
{
/*
* The caller wants an immediate lock, but this cannot be granted because
* the document is already locked.
*/
hrSession = (int)TsErrors.TsESynchronous;
}
else
{
//the request is asynchronous
//Queue the lock request
_lockRequestQueue.Enqueue(dwLockFlags);
hrSession = (int)TsErrors.TsSAsync;
}
return;
}
//lock the document
_LockDocument(dwLockFlags);
//call OnLockGranted
hrSession = _sink.OnLockGranted(dwLockFlags);
//unlock the document
_UnlockDocument();
}
private bool _IsLocked(TsfSharp.TsLfFlags dwLockType)
{
return(_locked && (_lockFlags & dwLockType) != 0);
}