Populate a StringVector from a file

Development
3

Hi Mathieu,

Thanks for your reply.

I’ll check out the link you provided. The Default Value tag allows me to set the initial value of the StringVector before the user selects a file. I can’t see a way of updating this and redrawing the StringVector after a user picks a file with the chooser?

This is what I have so far:

from paraview.util.vtkAlgorithm import (
VTKPythonAlgorithmBase,
smdomain,
smhint,
smproperty,
smproxy,
)

from vtkmodules.numpy_interface import dataset_adapter as dsa
from vtkmodules.vtkCommonDataModel import (vtkDataSet, vtkCompositeDataSet, vtkMultiBlockDataSet, vtkUnstructuredGrid)

@smproxy.filter(label=“Myfilter”)
@smhint.xml(r"".format(os.path.join(PLUGINDIR,‘icons’,‘myicon.png’)))
@smhint.xml("")
@smproperty.input(name=“Input”, port_index=0)
@smdomain.datatype(dataTypes=[“vtkMultiBlockDataSet”], composite_data_supported=True)
class Myfilter(VTKPythonAlgorithmBase):
def init(self):
VTKPythonAlgorithmBase.init(self, nInputPorts=1, nOutputPorts=1, inputType=“vtkMultiBlockDataSet”, outputType=“vtkMultiBlockDataSet”)
self._text = None
self._filename = None

@smproperty.stringvector(name="Text")
@smdomain.filelist()
@smhint.filechooser(
    extensions=['txt'], file_description="Text File"
)
def SetFileName(self, filename):
    if self._filename != filename:
        self._filename = filename
        self.Modified()

@smproperty.stringvector(name="TextBox", default_values="Enter TEXT here or load a file below")
@smhint.xml(r"<Widget type='multi_line'/>")
def SetText(self, text):
    if self._text != text:
        self._text = text
        self.Modified()

def RequestData(self, request, inInfoVec, outInfoVec):

    thisMultiblock = dsa.WrapDataObject(vtkMultiBlockDataSet.GetData(inInfoVec[0]))
    output = dsa.WrapDataObject(vtkMultiBlockDataSet.GetData(outInfoVec))

    self.SetProgressText('Processing Multiblock')
    self.UpdateProgress(0.1)
    
    if self._filename is not None:
        with open(self._filename,'r') as f:
            self._text = ''.join(f.readlines())

    thisNewMultiblock = myClass.myFunction(thisMultiblock,self._text).multiblock

    output.ShallowCopy(thisNewMultiblock)
    
    self.SetProgressText('Done')
    self.UpdateProgress(1.0)
    return 1