/// <summary>
/// To ensure connection didn't happen twice it first checks if
/// adaptor with that object already exists.
/// If Adaptor with this object specified as Target is already
/// present then object was connected already anyway
/// </summary>
/// <param name="aObject">
/// Object being connected <see cref="System.Object"/>
/// </param>
/// <remarks>
/// If object being connected to is type of PropertyChangedEventHandler
/// then connection to PropertyChanged happens, otherwise it
/// connects to all PropertyChangedEventHandler properties
/// </remarks>
public static void ConnectEvent(object aObject)
{
if (aObject == null)
{
return;
}
if (DataSourceController.CountDataSourceOwners(aObject) > 1)
{
return;
}
if (aObject is INotifyPropertyChanged)
{
(aObject as INotifyPropertyChanged).PropertyChanged += OnObjectPropertyChanged;
}
else
{
// Connect to all PropertyChangedEventHandler properties
foreach (EventInfo ev in aObject.GetType().GetEvents())
{
if (ev.EventHandlerType is PropertyChangedEventHandler)
{
ev.AddEventHandler(aObject, OnObjectPropertyChanged);
}
}
}
}
/// <summary>
/// Disconect only happens if only one Adaptor has this object
/// specified as Target.
/// If not then connection is still valid
/// </summary>
/// <param name="aObject">
/// Object being diconnected <see cref="System.Object"/>
/// </param>
/// <remarks>
/// If object being disconnected from is type of PropertyChangedEventHandler
/// then disconnection from PropertyChanged happens, otherwise it
/// disconnects from all PropertyChangedEventHandler properties
/// </remarks>
public static void DisconnectEvent(object aObject)
{
if (aObject == null)
{
return;
}
if (DataSourceController.CountDataSourceOwners(aObject) > 1)
{
return;
}
if (aObject is INotifyPropertyChanged)
{
(aObject as INotifyPropertyChanged).PropertyChanged -= OnObjectPropertyChanged;
}
else
{
// Disconnect from all PropertyChangedEventHandler properties
foreach (EventInfo ev in aObject.GetType().GetEvents())
{
if (ev.EventHandlerType is PropertyChangedEventHandler)
{
// ev.RemoveEventHandler (aObject, new PropertyChangedEventHandler(ObjectPropertyChanged));
ev.RemoveEventHandler(aObject, OnObjectPropertyChanged);
}
}
}
}
/// <summary>
/// Assigns data or disqualifies validity if needed
/// </summary>
public void CheckControl()
{
if (destroyed == true)
{
return;
}
if (Activated == false)
{
return;
}
if (checkup == true)
{
return;
}
if (IsControllingWidget == false)
{
return;
}
checkup = true;
bool canuse = adaptor.IsValidMapping;
IObserveable observer = null;
IObserveable boundaryobserver = null;
if (Adaptor != null)
{
observer = DataSourceController.GetInfoFor(Adaptor.FinalTarget);
}
if (Adaptor != null)
{
boundaryobserver = DataSourceController.GetInfoFor(BoundaryAdaptor.FinalTarget);
}
if ((canuse == true) && (Control != null))
{
if (Control is IChangeableControl)
{
if (observer != null)
{
if (observer.CanGet == true)
{
InvokeAdapteeDataChange((Control as IChangeableControl), Adaptor.FinalTarget);
}
}
if (boundaryobserver != null)
{
if (boundaryobserver.CanGet == true)
{
if (TypeValidator.IsCompatible(Control.GetType(), typeof(IBoundedContainer)) == true)
{
InvokeBoundaryDataChange((Control as IBoundedContainer), this);
}
}
}
}
}
observer = null;
boundaryobserver = null;
checkup = false;
}
/// <summary>
/// Executes notification ReloadObject in Triggers engine
/// </summary>
/// <param name="aObject">
/// DataSource Object which was subject to event <see cref="System.Object"/>
/// </param>
/// <param name="aChangedBy">
/// Object that caused the event, this client will avoid update <see cref="System.Object"/>
/// </param>
public static void ReloadObjectNotification(object aObject, object aChangedBy)
{
if (aObject == null)
{
return;
}
DataSourceController.PostRequest(aObject);
}
/// <summary>
/// Checks if Get request is possible in this moment
/// </summary>
/// <param name="aState">
/// State <see cref="EObserveableState"/>
/// </param>
/// <returns>
/// true if successful <see cref="System.Boolean"/>
/// </returns>
public bool SetState(EObserveableState aState)
{
IObserveable observer = DataSourceController.GetInfoFor(adaptor.FinalTarget);
if (observer == null)
{
return(false);
}
bool res = observer.SetState(aState);
observer = null;
return(res);
}
/// <summary>
/// Assigns Value in given direction between Control and DataSource Target
/// </summary>
/// <param name="aDirection">
/// Direction of data <see cref="EDataDirection"/>
/// </param>
/// <param name="aObject">
/// Object which contains data <see cref="System.Object"/>
/// </param>
/// <param name="aControl">
/// Control used to edit <see cref="System.Object"/>
/// </param>
/// <returns>
/// Returns true if successful <see cref="System.Boolean"/>
/// </returns>
public bool AssignValueToObject(EDataDirection aDirection, object aObject, object aControl)
{
bool res = false;
// Check if
if (IsGlobal == true)
{
if (aDirection == EDataDirection.FromControlToDataSource)
{
throw new ExceptionGlobalMappingAssignedFromControlToTarget();
}
#if NEWCACHE
if (dataCache == null)
{
dataCache = new CachedProperty(Adaptor.FinalTarget, Name);
}
if (controlCache == null)
{
controlCache = new CachedProperty(aControl, MappingTarget);
}
if (controlCache.IsCached == true)
{
object val;
if (dataCache.IsCached == true)
{
if (dataCache.GetValue(out val) == true)
{
if (controlCache.SetValue(val) == true)
{
val = null;
return(true);
}
}
}
}
return(false);
#endif
#if OLDCACHE
object FromObject = aObject;
object ToObject = aControl;
string FromProperty = Name;
string ToProperty = MappingTarget;
// assign, direction is already correct
res = ConnectionProvider.CopyPropertyValue(FromObject, FromProperty, ToObject, ToProperty);
FromObject = null;
ToObject = null;
return(res);
#endif
}
else
{
#if NEWCACHE
CachedProperty FromObject;
CachedProperty ToObject;
bool canbedone;
if (aDirection == EDataDirection.FromControlToDataSource)
{
FromObject = controlCache;
ToObject = dataCache;
canbedone = AllowedToWrite;
if (ToObject is IObserveable)
{
(ToObject as IObserveable).ResetChangeCallCheckup();
}
}
else
{
FromObject = dataCache;
ToObject = controlCache;
canbedone = AllowedToRead;
}
if (controlCache == null)
{
controlCache = new CachedProperty(aControl, MappingTarget);
}
object val = null;
// assign in set direction
if ((canbedone == true) && (FromObject != null) && (ToObject != null))
{
if (FromObject.GetValue(out val) == true)
{
if (ToObject.SetValue(val) == true)
{
if (aDirection == EDataDirection.FromControlToDataSource)
{
if ((ToObject is IObserveable) == false)
{
DataSourceController.CallChangedFor(ToObject);
}
else
if ((ToObject as IObserveable).HasCalledForChange == false)
{
(ToObject as IObserveable).HasChanged = true;
}
}
}
res = true;
}
}
FromObject = null;
ToObject = null;
return(res);
#endif
#if OLDCACHE
object FromObject;
object ToObject;
string FromProperty;
string ToProperty;
bool canbedone;
// swap direction if needed
if (aDirection == EDataDirection.FromControlToDataSource)
{
FromObject = aControl;
ToObject = aObject;
FromProperty = MappingTarget;
ToProperty = Name;
canbedone = AllowedToWrite;
if (ToObject is IObserveable)
{
(ToObject as IObserveable).ResetChangeCallCheckup();
}
}
else
{
FromObject = aObject;
ToObject = aControl;
FromProperty = Name;
ToProperty = MappingTarget;
canbedone = AllowedToRead;
}
// assign in set direction
if (canbedone == true)
{
if (ConnectionProvider.CopyPropertyValue(FromObject, FromProperty, ToObject, ToProperty) == true)
{
if (aDirection == EDataDirection.FromControlToDataSource)
{
if ((ToObject is IObserveable) == false)
{
DataSourceController.CallChangedFor(ToObject);
}
else
if ((ToObject as IObserveable).HasCalledForChange == false)
{
(ToObject as IObserveable).HasChanged = true;
}
}
res = true;
}
// else
// Debug.Warning ("MappedProperty.AssignValueToObject", "CopyPropertyValue not successful");
}
FromObject = null;
ToObject = null;
return(res);
#endif
}
}
/// <summary>
/// gets value from referenced Target
/// </summary>
/// <param name="aValue">
/// Value to set <see cref="System.Object"/>
/// </param>
public void SetValue(object aValue)
{
#if NEWCACHE
if (Adaptor.FinalTarget is IObserveable)
{
(Adaptor.FinalTarget as IObserveable).ResetChangeCallCheckup();
}
if (Resolve() == true)
{
if (dataCache.SetValue(Adaptor.FinalTarget, Name, aValue) == true)
{
if ((Adaptor.FinalTarget is IObserveable) == false)
{
DataSourceController.CallChangedFor(Adaptor.FinalTarget);
}
else
if ((Adaptor.FinalTarget as IObserveable).HasCalledForChange == false)
{
(Adaptor.FinalTarget as IObserveable).HasChanged = true;
}
}
}
#endif
#if OLDCACHE
if (cached == false)
{
Name = name;
}
if ((cached == false) && (Adaptor.InheritedTarget == false))
{
return;
}
if (cached == false)
{
if (Adaptor.InheritedTarget == true)
{
if (Resolve() == false)
{
return;
}
}
else
{
return;
}
}
if (Adaptor.FinalTarget is IObserveable)
{
(Adaptor.FinalTarget as IObserveable).ResetChangeCallCheckup();
}
if (ConnectionProvider.SetPropertyValue(Adaptor.FinalTarget, Info, aValue) == true)
{
if ((Adaptor.FinalTarget is IObserveable) == false)
{
DataSourceController.CallChangedFor(Adaptor.FinalTarget);
}
else
if ((Adaptor.FinalTarget as IObserveable).HasCalledForChange == false)
{
(Adaptor.FinalTarget as IObserveable).HasChanged = true;
}
}
#endif
}
/// <summary>
/// Valid for complex controls like TreeView
/// </summary>
/* public virtual void ClearBeforeRemapping()
* {
* if (Control is IComplexAdaptableControl)
* (Control as IComplexAdaptableControl).ClearBeforeRemapping();
* }
*
* /// <summary>
* /// Valid for complex controls like TreeView
* /// </summary>
* public virtual void RemapControl()
* {
* if (Control is IComplexAdaptableControl)
* (Control as IComplexAdaptableControl).RemapControl();
* }*/
/// <summary>
/// Sets method of DataSource update
/// </summary>
/// <param name="aMethod">
/// Method of update <see cref="EApplyMethod"/>
/// </param>
/// <returns>
/// true if succeessful <see cref="System.Boolean"/>
/// </returns>
public bool DataSourceNeedsUpdateOn(EApplyMethod aMethod)
{
return(DataSourceController.DataSourceNeedsUpdateOn(adaptor.FinalTarget, aMethod));
}
