internal override bool ClearValueCore(int key)
{
if (!this.trackPropertyChanging && !this.trackPropertyChanged)
{
return(base.ClearValueCore(key));
}
object currentValue = this.GetValue(key);
RadPropertyEventArgs args = new RadPropertyEventArgs(key, currentValue, null);
if (this.trackPropertyChanging)
{
this.OnPropertyChanging(args);
if (args.Cancel)
{
return(false);
}
}
this.propertyStore.RemoveEntry(key);
if (this.trackPropertyChanged)
{
this.OnPropertyChanged(args);
}
return(true);
}
internal override bool SetValueCore(int key, object value)
{
if (!this.trackPropertyChanging && !this.trackPropertyChanged)
{
return(base.SetValueCore(key, value));
}
object currentValue = this.GetValue(key);
if (object.Equals(currentValue, value))
{
return(false);
}
RadPropertyEventArgs args = new RadPropertyEventArgs(key, currentValue, value);
if (this.trackPropertyChanging)
{
this.OnPropertyChanging(args);
if (args.Cancel)
{
return(false);
}
}
this.propertyStore.SetEntry(key, value);
if (this.trackPropertyChanged)
{
this.OnPropertyChanged(args);
}
return(true);
}
internal virtual void OnPropertyChanging(RadPropertyEventArgs e)
{
if (!this.IsTreeLoaded)
{
return;
}
Message message = new Message(PropertyChangingMessage, e, this.GetMessageDispatchMode(PropertyChangingMessage));
this.DispatchMessage(message);
}
internal virtual void OnPropertyChanged(RadPropertyEventArgs e)
{
if (!this.IsTreeLoaded)
{
return;
}
Message message = new Message(PropertyChangedMessage, e, this.GetMessageDispatchMode(PropertyChangingMessage));
this.DispatchMessage(message);
// raise the system PropertyChanged event
this.RaisePropertyChanged(e.PropertyName, e.Key);
}
