[Paraview] Property Panel and Inheritance?

[Utkarsh Ayachit]

It will only warp the 1 base. I'd suggest using a proxy pattern rather
than multiple inheritance.

On Thu, Oct 2, 2014 at 9:20 AM, B.W.H. van Beest <bwvb at xs4all.nl> wrote:
> It seems to work. Inheritance of the vtkCubeSource methods just works.
> Also when I reverse the inheritance order, or when I have single
> inheritance (of vtkCubeSource), in the xml-file I can just refer to the
> methods of the base class vtkCubeSource (say SetLength()) and it works.
> But not so for the oher base class!
>
> So I *think* I am using the two baseclasses the same way, the effect
> however, is asymmetrial.
>
> I looked, as you suggested,  into sphBoxSourceClientServer.h  The
> methods of the baseclasses (vtkCubeSource), e.g. SetXLength(), do not
> show-up there either. But it works, so that might not be the place where
> to look.
>
> Any other ideas?
>
> Regards,
> Bertwim
>
>
>
> On 10/02/2014 02:23 PM, Utkarsh Ayachit wrote:
>> I can't remember if the wrapping code can handle multiple inheritance.
>> If you removed the second superclass, does that work?
>>
>> Also look the sphBoxSourceClientServer.h file generated in your build
>> directory. That will indicate which methods from this class are
>> getting wrapped and which ones aren't.
>>
>> Utkarsh
>>
>> On Thu, Oct 2, 2014 at 6:44 AM, B.W.H. van Beest <bwvb at xs4all.nl> wrote:
>>> Hello, I'm struggling with getting the properties panel right for a new
>>> Source defined in plugin that I'm writing.
>>>
>>> In the class below, I'm extending the VTK class for a rectangular box,
>>> vtkCubeSource. The class also derives from another class,
>>> that has the well known method  "foo".   I have made corresponding
>>> changes to the server manager file (xml), given below.
>>>
>>> In the xml-file, I can specify the panel entries for the vtkCubeSource,
>>> referring to the methods of this vtk class which are available via
>>> inheritance, for instance "SetXLength(double)". However, when I do the
>>> same for the method "foo(int)" of the other base class, ParaView bombs,
>>> telling me that:
>>>
>>> $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
>>> tkPVSessionCore (0x113a740): Object type: sphBoxSource, could not find
>>> requested method: "foo"
>>> or the method was called with incorrect arguments.
>>>
>>> while processing
>>> Message 0 = Invoke
>>>   Argument 0 = vtk_object_pointer {sphBoxSource (0x30fbe00)}
>>>   Argument 1 = string_value {foo}
>>>   Argument 2 = int32_value {1024}
>>> $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
>>>
>>> The problem is gone when I provide the derived class also with a method
>>> "foo", which calls the "foo" of the base class.
>>> In short, I can refer, in the panel, to the methods of vtkCubeSource (as
>>> expected due to inheritance), but not for the other base class.
>>> What am I overlooking here, and what do I need to do to have the
>>> expected inheritance?
>>>
>>> Your view
>>> Kind Regards,
>>> Bertwim
>>> ---------------------
>>>
>>>
>>> This is my class:
>>> =====================================
>>> class sphBoxSource : public vtkCubeSource
>>>                                  , public SPHParticleProps
>>> {
>>> public:
>>>   static sphBoxSource* New();
>>>    vtkTypeMacro(sphBoxSource,vtkCubeSource);
>>>
>>> public:
>>>    sphBoxSource( double, double, double );
>>>    ~sphBoxSource();
>>>
>>> public:  // testing purposes only
>>>    void foo( int i ){ SPHParticleProps::foo(i);}   // For the Properties
>>> pane,: Why can I can not just inherit the method "foo"?
>>> };
>>> =======================================
>>>
>>> The server manager configuration is taken from "sources.xml" that comes
>>> with ParaView (4.2), but extended with a property for "foo".
>>>
>>> =======================================
>>> <ServerManagerConfiguration>
>>>    <ProxyGroup name="sources">
>>>    <!--
>>> ==================================================================== -->
>>>    <SourceProxy class="sphBoxSource"
>>>                 label="SPHBox"
>>>                 name="SPHBoxSource">
>>>       ...
>>>       <DoubleVectorProperty animateable="1"
>>>                             command="SetXLength"
>>>                             default_values="10.0"
>>>                             name="XLength"
>>>                             number_of_elements="1"
>>>                             panel_visibility="default">
>>>          <DoubleRangeDomain min="0" name="range" />
>>>          <Documentation>This property specifies the length of the box in
>>> the X direction.</Documentation>
>>>       </DoubleVectorProperty>
>>>
>>>       ....
>>>
>>>       <!-- Add gui component for testing purposes -->
>>>       <IntVectorProperty command="foo"
>>>                          default_values="1024"
>>>                          name="foobar"
>>>                          number_of_elements="1">
>>>          <IntRangeDomain min="0" name="range" />
>>>          <Documentation>Just for testing. Does nothing.</Documentation>
>>>       </IntVectorProperty>
>>>
>>>       <!-- End Box -->
>>>    </SourceProxy>
>>>    <!--
>>> ==================================================================== -->
>>>   </ProxyGroup>
>>> </ServerManagerConfiguration>
>>>
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