public override bool CanHandle()
{
if (this.DragModel.DataSource.FindIndex((Predicate <DataSchemaNodePath>)(schemaPath =>
{
if (schemaPath.IsMethod)
{
return(true);
}
if (schemaPath.IsProperty)
{
return(PlatformTypes.ICommand.IsAssignableFrom((ITypeId)schemaPath.Type));
}
return(false);
})) < 0)
{
return(false);
}
if (this.DragModel.DataSource.Count == 1)
{
DataSchemaNodePath primarySchemaNodePath = this.DragModel.DataSource.PrimarySchemaNodePath;
if (primarySchemaNodePath.IsProperty)
{
BindingPropertyMatchInfo bindingPropertyInfo = BindingPropertyHelper.GetDefaultBindingPropertyInfo(this.DragModel.TargetNode, primarySchemaNodePath.Type);
if (bindingPropertyInfo.Property != null && bindingPropertyInfo.Compatibility == BindingPropertyCompatibility.Assignable)
{
return(false);
}
}
}
if (!this.UpdateDragModelInternal())
{
this.DragModel.DropFlags = DataBindingDragDropFlags.None;
}
return(this.DragModel.DropFlags != DataBindingDragDropFlags.None);
}
private IProperty GetDefaultBindingProperty(DataBindingDragDropFlags filteredDragFlags, IType dataType)
{
if (dataType == null)
{
return((IProperty)null);
}
BindingPropertyMatchInfo bindingPropertyInfo = BindingPropertyHelper.GetDefaultBindingPropertyInfo(this.DragModel.TargetNode, dataType);
if (bindingPropertyInfo.Property == null)
{
return((IProperty)null);
}
if (bindingPropertyInfo.Compatibility == BindingPropertyCompatibility.StringSpecial && !PlatformTypes.IConvertible.IsAssignableFrom((ITypeId)dataType))
{
return((IProperty)null);
}
if (bindingPropertyInfo.Compatibility == BindingPropertyCompatibility.DataContext)
{
if ((filteredDragFlags & DataBindingDragDropFlags.DiscourageDataContext) == DataBindingDragDropFlags.DiscourageDataContext)
{
return((IProperty)null);
}
SceneElement sceneElement = this.DragModel.TargetNode as SceneElement;
if (sceneElement == null)
{
return((IProperty)null);
}
if (!sceneElement.IsContainer && !PlatformTypes.UserControl.IsAssignableFrom((ITypeId)sceneElement.Type) && (sceneElement.Parent != null && !PlatformTypes.FrameworkTemplate.IsAssignableFrom((ITypeId)sceneElement.Parent.Type)))
{
return((IProperty)null);
}
if (PlatformTypes.IConvertible.IsAssignableFrom((ITypeId)dataType))
{
return((IProperty)null);
}
}
if (bindingPropertyInfo.Compatibility == BindingPropertyCompatibility.Assignable && bindingPropertyInfo.Property.PropertyType.RuntimeType == typeof(object) && !PlatformTypes.IConvertible.IsAssignableFrom((ITypeId)dataType))
{
return((IProperty)null);
}
if (PlatformTypes.IEnumerable.IsAssignableFrom((ITypeId)bindingPropertyInfo.Property.PropertyType) && !PlatformTypes.String.IsAssignableFrom((ITypeId)bindingPropertyInfo.Property.PropertyType) && PlatformTypes.String.IsAssignableFrom((ITypeId)dataType))
{
return((IProperty)null);
}
return(bindingPropertyInfo.Property);
}