[Paraview-developers] Servermanager XML: Displaying a list of strings along with selection
Girish Ramesh
rgirish28 at gmail.com
Mon Aug 18 09:42:27 EDT 2014
Sorry but I'm still getting a seg fault and I'm not sure why. This is the
relevant code within the plugin. Thanks.
XML:
<StringVectorProperty
name="CPOList"
label="CPOList"
command="SetCPOList"
number_of_elements_per_command="1"
information_property="CPOListInfo"
panel_visibility="default">
<StringListDomain name="array_list">
<RequiredProperties>
<Property function="ArrayList"
name="CPOListInfo"/>
</RequiredProperties>
</StringListDomain>
<Documentation>
This property helps select the CPO.
</Documentation>
</StringVectorProperty>
<StringVectorProperty
name="CPOListInfo"
label="CPOListInfo"
command="GetCPOList"
information_only="1" >
<StringArrayHelper />
</StringVectorProperty>
C++:
vtkStringArray* ReadUALGrid::GetCPOList(){
vtkNew<vtkStringArray> labels;
labels->InsertNextValue("hello");
labels->InsertNextValue("world");
return labels.GetPointer();
}
void ReadUALGrid::SetCPOList(int index)
{
}
I'm just using a random vtkStringArray for testing, but it still segfaults.
Thank you for the help.
Regards,
Girish
On 18 August 2014 15:31, Girish Ramesh <rgirish28 at gmail.com> wrote:
> Thank you very much Cory for your help. I guess the forum shall be
> peppered with any more problems I have!
>
> Regards,
> Girish
>
>
> On 18 August 2014 15:29, Cory Quammen <cory.quammen at kitware.com> wrote:
>
>> Girish,
>>
>> Unfortunately, there isn't much documentation about the server manager
>> XMLs. Finding something that looks like what you are trying to do in
>> the UI and then tracking it down in the XML is currently the best way.
>>
>> Thanks,
>> Cory
>>
>> On Mon, Aug 18, 2014 at 9:25 AM, Girish Ramesh <rgirish28 at gmail.com>
>> wrote:
>> > Dear Cory,
>> >
>> > Thank you very much. Your hints were very helpful. Option 2 was what I
>> was
>> > looking for, but I didn't use the StringListDomain in the second
>> property to
>> > connect the information. So my plugin was seg faulting repeatedly even
>> > though I thought my logic was correct. Also, is there any resource to
>> find
>> > more about servermanager xmls and how to connect the different classes
>> > together or is the only option to look at examples. Sorry for the
>> trouble
>> > :)Thanks again!
>> >
>> > Regards,
>> > Girish
>> >
>> >
>> >
>> >
>> > On 18 August 2014 15:16, Cory Quammen <cory.quammen at kitware.com> wrote:
>> >>
>> >> Girish,
>> >>
>> >> Is the list of strings fixed, or can it vary depending on the file?
>> >> There are three things you can do depending on what you need:
>> >>
>> >> 1). If you have a fixed set of strings, you can use an
>> >> IntVectorProperty, and set its domain as a list of strings with an
>> >> associated integer, i.e., an enumeration.
>> >>
>> >> <IntVectorProperty command="SetVariableType"
>> >> default_values="0"
>> >> name="VariableType"
>> >> number_of_elements="1">
>> >> <EnumerationDomain name="enum">
>> >> <Entry text="Variable 1"
>> >> value="0" />
>> >> <Entry text="Variable 2"
>> >> value="1" />
>> >> <Entry text="Variable 3"
>> >> value="2" />
>> >> </EnumerationDomain>
>> >> </IntVectorProperty>
>> >>
>> >> This generates a combo box in the UI, and only one element can be
>> >> selected at a time. It will expect your reader to have methods with
>> >> the signature
>> >>
>> >> virtual void SetVariableType(int i);
>> >> virtual int GetVariableType();
>> >>
>> >> Within your reader, you can use this enumeration value to do whatever
>> >> you'd like.
>> >>
>> >> 2). If you just have a list of strings generated in your reader and
>> >> want to enable the selection of one, you can use a
>> >> StringVectorProperty with a StringListDomain, e.g.
>> >>
>> >> <StringVectorProperty command="GetAllDimensions"
>> >> information_only="1"
>> >> name="DimensionInfo">
>> >> <StringArrayHelper />
>> >> </StringVectorProperty>
>> >> <StringVectorProperty animatelable="0"
>> >> command="SetDimensions"
>> >> name="Dimensions"
>> >> number_of_elements="1"
>> >> panel_visibility="default">
>> >> <StringListDomain name="array_list">
>> >> <RequiredProperties>
>> >> <Property function="ArrayList"
>> >> name="DimensionInfo" />
>> >> </RequiredProperties>
>> >> </StringListDomain>
>> >> </StringVectorProperty>
>> >>
>> >> The first property here is an "information-only" property. ParaView
>> >> will invoke the method "GetAllDimensions" in your reader which should
>> >> return a vtkStringArray. The second property is responsible for
>> >> displaying the string array as a combobox, and invokes the method
>> >> "SetDimensions" with the value selected in the combobox. You need the
>> >> StringListDomain in the second property to connect the
>> >> information-only property to the second property.
>> >>
>> >> 3). If you need to populate the list depending on what is in the file
>> >> and be able to select/deselect list entries (e.g., to pick which
>> >> variables are loaded from the file), then see the XML file
>> >>
>> >> ParaView/ParaViewCore/ServerManager/SMApplication/Resources/readers.xml
>> >>
>> >> and search for the SourceProxy named "FlashReaderCore". You'll find
>> >> this XML property definition:
>> >>
>> >> <!-- Array Selection GUI Component -->
>> >> <StringVectorProperty information_only="1"
>> >> name="CellArrayInfo">
>> >> <ArraySelectionInformationHelper attribute_name="Cell" />
>> >> </StringVectorProperty>
>> >> <StringVectorProperty command="SetCellArrayStatus"
>> >> element_types="2 0"
>> >> information_property="CellArrayInfo"
>> >> label="Cell Arrays"
>> >> name="CellArrayStatus"
>> >> number_of_elements="0"
>> >> number_of_elements_per_command="2"
>> >> repeat_command="1">
>> >> <ArraySelectionDomain name="array_list">
>> >> <RequiredProperties>
>> >> <Property function="ArrayList"
>> >> name="CellArrayInfo" />
>> >> </RequiredProperties>
>> >> </ArraySelectionDomain>
>> >> <Documentation>This property lists which cell-centered arrays
>> to
>> >> read.</Documentation>
>> >> </StringVectorProperty>
>> >> <StringVectorProperty information_only="1"
>> >> name="PointArrayInfo">
>> >> <ArraySelectionInformationHelper attribute_name="Point" />
>> >> </StringVectorProperty>
>> >>
>> >> This XML is responsible for showing in the GUI the list of
>> >> cell-associated arrays. In the vtkAMRFlashReader, there are a number
>> >> of
>> >> methods that are defined to make this work. (These are actually
>> >> defined in vtkAMRFlashReader's parent class, vtkAMRBaseReader.h)
>> >>
>> >> // Description:
>> >> // Get the data array selection tables used to configure which data
>> >> // arrays are loaded by the reader.
>> >> vtkGetObjectMacro(CellDataArraySelection, vtkDataArraySelection);
>> >>
>> >> // Description:
>> >> // Get the number of point or cell arrays available in the input.
>> >> int GetNumberOfCellArrays();
>> >>
>> >> // Description:
>> >> // Get the name of the point or cell array with the given index in
>> >> // the input.
>> >> const char* GetCellArrayName(int index);
>> >>
>> >> // Description:
>> >> // Get/Set whether the point or cell array with the given name is to
>> >> // be read.
>> >> int GetCellArrayStatus(const char* name);
>> >> void SetCellArrayStatus(const char* name, int status);
>> >>
>> >> The first method listed above might not be necessary in your reader;
>> >> I'm not sure. The rest are necessary.
>> >>
>> >> Note in this XML and method definitions that "Cell" is the name of the
>> >> given to the association of array the reader can load. You can replace
>> >> all occurrences of "Cell" with whatever name is more appropriate for
>> >> your needs.
>> >>
>> >> I hope that helps,
>> >> Cory
>> >>
>> >> On Mon, Aug 18, 2014 at 5:46 AM, Girish Ramesh <rgirish28 at gmail.com>
>> >> wrote:
>> >> > Hi,
>> >> >
>> >> > I have been breaking my head over this problem for a while now as
>> there
>> >> > are
>> >> > no servermanager xml explanations anywhere. So, what I want to
>> >> > accomplish is
>> >> > populate a GUI list with a vtkStringArray and be able to select
>> strings
>> >> > within the list in order to fill a variable . Can someone please
>> help me
>> >> > or
>> >> > point me in the right direction in this task? I am writing my own
>> plugin
>> >> > reader as you may have understood, but I'm stuck at this point for a
>> >> > while.
>> >> > Thanks.
>> >> >
>> >> > Regards,
>> >> > Girish
>> >> >
>> >> > _______________________________________________
>> >> > Paraview-developers mailing list
>> >> > Paraview-developers at paraview.org
>> >> > http://public.kitware.com/mailman/listinfo/paraview-developers
>> >> >
>> >
>> >
>>
>
>
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