/// <summary>
/// Creates the word predictor using reflection on the
/// specified type and makes it the active one. If it fails,
/// it set the null word predictor as the active one.
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
private bool createAndSetActiveWordPredictor(Type type)
{
bool retVal = true;
try
{
var wordPredictor = (IWordPredictor)Activator.CreateInstance(type);
retVal = wordPredictor.Init();
if (retVal)
{
saveSettings(wordPredictor);
_activeWordPredictor = wordPredictor;
}
}
catch (Exception ex)
{
Log.Debug("Unable to load WordPredictor " + type + ", assembly: " + type.Assembly.FullName + ". Exception: " + ex.ToString());
retVal = false;
}
if (!retVal)
{
_activeWordPredictor = _nullWordPredictor;
}
return(retVal);
}
/// <summary>
/// Sets the active word predictor represented by id
/// as a Guid or name.
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public bool SetActiveWordPredictor(String idOrName)
{
bool retVal = true;
Guid guid = Guid.Empty;
if (!Guid.TryParse(idOrName, out guid))
{
guid = _wordPredictors.GetByName(idOrName);
}
Type type = Guid.Equals(idOrName, Guid.Empty) ?
type = typeof(NullWordPredictor) :
_wordPredictors.Lookup(guid);
if (type != null)
{
if (_activeWordPredictor != null)
{
_activeWordPredictor.Dispose();
_activeWordPredictor = null;
}
retVal = createAndSetActiveWordPredictor(type);
}
else
{
createAndSetActiveWordPredictor(typeof(NullWordPredictor));
retVal = false;
}
return(retVal);
}
/// <summary>
/// Switch language to the specified one.
/// </summary>
/// <param name="ci">culture to switch to</param>
/// <returns>true on success</returns>
public bool SwitchLanguage(CultureInfo ci)
{
if (_activeWordPredictor != null)
{
_activeWordPredictor.Dispose();
_activeWordPredictor = null;
}
return(SetActiveWordPredictor(ci));
}
/// <summary>
/// Initializes and instance of the WordPredictionManager class.
/// </summary>
private WordPredictionManager()
{
AppDomain currentDomain = AppDomain.CurrentDomain;
Context.EvtCultureChanged += Context_EvtCultureChanged;
currentDomain.AssemblyResolve += currentDomain_AssemblyResolve;
_activeWordPredictor = WordPredictors.NullWordPredictor;
_userWordPredictorRootDir = UserManagement.UserManager.GetFullPath(WordPredictorsRootName);
_profileRootDir = UserManagement.ProfileManager.GetFullPath(WordPredictorsRootName);
}
/// <summary>
/// Initializes and instance of the WordPredictionManager class.
/// </summary>
private WordPredictionManager()
{
AppDomain currentDomain = AppDomain.CurrentDomain;
currentDomain.AssemblyResolve += currentDomain_AssemblyResolve;
_nullWordPredictor = new NullWordPredictor();
_nullWordPredictor.Init();
_activeWordPredictor = _nullWordPredictor;
_userWordPredictorRootDir = UserManagement.UserManager.GetFullPath(WordPredictorsRootName);
_profileRootDir = UserManagement.ProfileManager.GetFullPath(WordPredictorsRootName);
}
/// <summary>
/// Creates the word predictor using reflection on the
/// specified type and makes it the active one. If it fails,
/// it set the null word predictor as the active one.
/// </summary>
/// <param name="type">Type of the word predictor class</param>
/// <param name="ci">Culture</param>
/// <returns>true</returns>
private bool createAndSetActiveWordPredictor(Type type, CultureInfo ci)
{
bool retVal;
try
{
var wordPredictor = (IWordPredictor)Activator.CreateInstance(type);
retVal = wordPredictor.Init(ci);
if (retVal)
{
_activeWordPredictor = wordPredictor;
}
}
catch (Exception ex)
{
Log.Debug("Unable to load WordPredictor " + type + ", assembly: " + type.Assembly.FullName + ". Exception: " + ex);
retVal = false;
}
return(retVal);
}
/// <summary>
/// Saves settings for the specified wordpredictor
/// </summary>
/// <param name="wordPredictor"></param>
private void saveSettings(IWordPredictor wordPredictor)
{
wordPredictor.SaveSettings("dummy");
}
/// <summary>
/// Loads default settings for the specified word predictor
/// </summary>
/// <param name="wordPredictor"></param>
private void loadDefaultSettings(IWordPredictor wordPredictor)
{
wordPredictor.LoadDefaultSettings();
}
/// <summary>
/// Saves settings for the specified wordpredictor
/// </summary>
/// <param name="wordPredictor"></param>
private void saveSettings(IWordPredictor wordPredictor)
{
wordPredictor.SaveSettings("dummy");
}
/// <summary>
/// Loads default settings for the specified word predictor
/// </summary>
/// <param name="wordPredictor"></param>
private void loadDefaultSettings(IWordPredictor wordPredictor)
{
wordPredictor.LoadDefaultSettings();
}
/// <summary>
/// Creates the word predictor using reflection on the
/// specified type and makes it the active one. If it fails,
/// it set the null word predictor as the active one.
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
private bool createAndSetActiveWordPredictor(Type type)
{
bool retVal = true;
try
{
var wordPredictor = (IWordPredictor)Activator.CreateInstance(type);
retVal = wordPredictor.Init();
if (retVal)
{
saveSettings(wordPredictor);
_activeWordPredictor = wordPredictor;
}
}
catch (Exception ex)
{
Log.Debug("Unable to load WordPredictor " + type + ", assembly: " + type.Assembly.FullName + ". Exception: " + ex.ToString());
retVal = false;
}
if (!retVal)
{
_activeWordPredictor = _nullWordPredictor;
}
return retVal;
}
/// <summary>
/// Sets the active word predictor represented by id
/// as a Guid or name.
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public bool SetActiveWordPredictor(String idOrName)
{
bool retVal = true;
Guid guid = Guid.Empty;
if (!Guid.TryParse(idOrName, out guid))
{
guid = _wordPredictors.GetByName(idOrName);
}
Type type = Guid.Equals(idOrName, Guid.Empty) ?
type = typeof(NullWordPredictor) :
_wordPredictors.Lookup(guid);
if (type != null)
{
if (_activeWordPredictor != null)
{
_activeWordPredictor.Dispose();
_activeWordPredictor = null;
}
retVal = createAndSetActiveWordPredictor(type);
}
else
{
createAndSetActiveWordPredictor(typeof(NullWordPredictor));
retVal = false;
}
return retVal;
}
/// <summary>
/// Initializes and instance of the WordPredictionManager class.
/// </summary>
private WordPredictionManager()
{
AppDomain currentDomain = AppDomain.CurrentDomain;
currentDomain.AssemblyResolve += currentDomain_AssemblyResolve;
_nullWordPredictor = new NullWordPredictor();
_nullWordPredictor.Init();
_activeWordPredictor = _nullWordPredictor;
_userWordPredictorRootDir = UserManagement.UserManager.GetFullPath(WordPredictorsRootName);
_profileRootDir = UserManagement.ProfileManager.GetFullPath(WordPredictorsRootName);
}
/// <summary>
/// Sets the active word predictor for the specified culture. If
/// culture is null, the default culture is used
/// </summary>
/// <param name="ci">culture info</param>
/// <returns>true on success</returns>
public bool SetActiveWordPredictor(CultureInfo ci = null)
{
bool retVal = true;
Guid guid = Guid.Empty;
Guid cultureNeutralGuid = Guid.Empty;
if (ci == null)
{
ci = CultureInfo.DefaultThreadCurrentUICulture;
}
guid = _wordPredictors.GetPreferredOrDefaultByCulture(ci);
cultureNeutralGuid = _wordPredictors.GetPreferredOrDefaultByCulture(null);
if (!Equals(guid, Guid.Empty)) // found something for the specific culture
{
var type = _wordPredictors.Lookup(guid);
if (_activeWordPredictor != null)
{
_activeWordPredictor.Dispose();
_activeWordPredictor = null;
}
retVal = createAndSetActiveWordPredictor(type, ci);
if (!retVal)
{
_activeWordPredictor = WordPredictors.NullWordPredictor;
}
}
else
{
if (!Equals(cultureNeutralGuid, Guid.Empty))
{
var type = _wordPredictors.Lookup(cultureNeutralGuid);
retVal = createAndSetActiveWordPredictor(type, ci);
if (!retVal)
{
ci = new CultureInfo("en-US");
guid = _wordPredictors.GetDefaultByCulture(ci);
if (!Equals(guid, Guid.Empty))
{
type = _wordPredictors.Lookup(guid);
retVal = createAndSetActiveWordPredictor(type, ci);
}
}
}
else
{
retVal = false;
}
if (!retVal)
{
_activeWordPredictor = WordPredictors.NullWordPredictor;
}
}
return(retVal);
}
