Problem in updating QstandardItemmodel.

[urmila]

I have QStandardItemModel with QCombobox and QTextedit as items. There are three PushButtons selector, next and previous to view the different row items to be selected. But instead of using Push buttons when I select directly the from the drop down menu the text edit is not automatically viewed with correct row item.
My code is:

QStringList detectorMethodLists;
  detectorMethodLists << tr("ORB") << tr("SURF") << tr("SIFT") << tr("FAST") << tr("BRISK") << tr("AKAZE");
  detectorListModel_ = new QStringListModel(detectorMethodLists, this);
  detectorModel_ = new QStandardItemModel(6, 3, this);
  QStringList detectorParameterLists;
  QString ORBString, SURFString, SIFTString, FASTString, BRISKString, KAZEString;
  ORBString = "nFeatures=2000, scaleFactor=1.2, nLevels=8, EdgeThreshold=31, Firstlevel=0, WTA_K=2, ScoreType=0, PatchSize=31";
  SURFString = "HessianThreshold=500.00, nOctaves=4, nOctaveLayers=2,extended = true,upright = false";
  SIFTString = "nFeatures=0, nOctaveLayers=3, ContrastThreshold=0.04, EdgeThreshold=10.0, Sigma=1.6 ";
  FASTString = "Threshold=10, nonmaxSuppression=true, type=TYPE_9_16";
  BRISKString = "Thresh=30, Octaves=3, PatternScale=1.0";
  KAZEString = " ";
  detectorParameterLists << ORBString << SURFString << SIFTString << FASTString << BRISKString << KAZEString;
  QStringList detectorTypes;
  detectorTypes << "0" << "1" << "2" << "3" << "4" << "5";
  for (int detectorRow = 0; detectorRow < 6; ++detectorRow) {
    QStandardItem *featureItem = new QStandardItem(detectorTypes[detectorRow]);
    detectorModel_->setItem(detectorRow, 0, featureItem);
    featureItem = new QStandardItem(detectorParameterLists[detectorRow]);
    detectorModel_->setItem(detectorRow, 1, featureItem);

QStringList detectorMethodLists;
  detectorMethodLists << tr("ORB") << tr("SURF") << tr("SIFT") << tr("FAST") << tr("BRISK") << tr("AKAZE");
  detectorListModel_ = new QStringListModel(detectorMethodLists, this);
  detectorModel_ = new QStandardItemModel(6, 3, this);
  QStringList detectorParameterLists;
  QString ORBString, SURFString, SIFTString, FASTString, BRISKString, KAZEString;
  ORBString = "nFeatures=2000, scaleFactor=1.2, nLevels=8, EdgeThreshold=31, Firstlevel=0, WTA_K=2, ScoreType=0, PatchSize=31";
  SURFString = "HessianThreshold=500.00, nOctaves=4, nOctaveLayers=2,extended = true,upright = false";
  SIFTString = "nFeatures=0, nOctaveLayers=3, ContrastThreshold=0.04, EdgeThreshold=10.0, Sigma=1.6 ";
  FASTString = "Threshold=10, nonmaxSuppression=true, type=TYPE_9_16";
  BRISKString = "Thresh=30, Octaves=3, PatternScale=1.0";
  KAZEString = " ";
  detectorParameterLists << ORBString << SURFString << SIFTString << FASTString << BRISKString << KAZEString;
  QStringList detectorTypes;
  detectorTypes << "0" << "1" << "2" << "3" << "4" << "5";
  for (int detectorRow = 0; detectorRow < 6; ++detectorRow) {
    QStandardItem *featureItem = new QStandardItem(detectorTypes[detectorRow]);
    detectorModel_->setItem(detectorRow, 0, featureItem);
    featureItem = new QStandardItem(detectorParameterLists[detectorRow]);
    detectorModel_->setItem(detectorRow, 1, featureItem);

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For example when I directly select(without using PushButton) from ORB to SURF in combobox the textedit string SURFString is not viewed but I view the ORB String.
Anyone can help me to solve this problem. I think I have to add a code of connecting signal slot.

[anda_skoa]

There are no comboboxes, textedits or pushbuttons anywhere in the code you posted.

Cheers,
_

[urmila]

The code of the model is:

detectorLabel_->setBuddy(detectorComboBox_);
  detectorParameterLabel_->setBuddy(detectorParameterEdit_);
  detectorComboBox_->setModel(detectorListModel_);

detectorLabel_->setBuddy(detectorComboBox_);
  detectorParameterLabel_->setBuddy(detectorParameterEdit_);
  detectorComboBox_->setModel(detectorListModel_);

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[anda_skoa]

That should display the entries if detectorListModel_ in detectorComboBox_
You are saying that this does not work?

Cheers,
_

[urmila]

This means that when I directly change ( without using any push button) to SURF from ORB the detectorParameterList which is in the same row as SURF do not change. It shows the detectorParameterList corresponding to ORB combobox.

[anda_skoa]

There is no code in any of your postings that contains changing anything.

Cheers,
_

[urmila]

I have not posted the entire code. The code that relates to changing are three push buttons previous button, next button and select button.

nextButtonDetector_ = new QPushButton(tr("&Next Detector"));
previousButtonDetector_ = new QPushButton(tr("&Previous Detector"));
selectButtonDetector_ = new QPushButton(tr("&Select Detector"));
 The code for updating the view with pushbuttons is:
 
void FeatureDetectorExtractor::updateButtonsDetector(int detectorRow){
  previousButtonDetector_->setEnabled(detectorRow > 0);
  nextButtonDetector_->setEnabled(detectorRow < detectorModel_->rowCount() - 1);
}
 The code related to select button is :
void FeatureDetectorExtractor::selectButtonDetectorClikked(){
  QString messageString = tr("The selected  Feature Detector is : %1\n Detector parameter : %2\n ").arg(detectorComboBox_->currentText()).arg(detectorParameterEdit_->toPlainText());
  QMessageBox msgBox;
  msgBox.setWindowTitle("Feature Detector Info");
  msgBox.setText(messageString);
  msgBox.setStandardButtons(QMessageBox::Ok | QMessageBox::Retry);
  QString  detectorType, detectorParameter;
  detectorType = detectorComboBox_->currentText();
  detectorParameter = detectorParameterEdit_->toPlainText();
  int ret = msgBox.exec();
  switch (ret) {
  case QMessageBox::Ok:
    disconnectDetectorButton();
    if (detectorType.compare("ORB") == 0){
      createORB_detector(detectorParameter); // The function related to ORB
    }
    else if (detectorType.compare("SURF") == 0){
      createSURF_detector(detectorParameter);// related to SURF 
    }
    else if (detectorType.compare("SIFT") == 0){
      createSIFT_detector(detectorParameter);
    }
    else if (detectorType.compare("FAST") == 0){
      createFAST_detector(detectorParameter);
    }
 
    else if (detectorType.compare("BRISK") == 0){
      createBRISK_detector(detectorParameter);
    }
    else{
      createKAZE_detector(detectorParameter);
    }
 
  case QMessageBox::Retry:
    break;
  }
}

nextButtonDetector_ = new QPushButton(tr("&Next Detector"));
previousButtonDetector_ = new QPushButton(tr("&Previous Detector"));
selectButtonDetector_ = new QPushButton(tr("&Select Detector"));
 The code for updating the view with pushbuttons is:

void FeatureDetectorExtractor::updateButtonsDetector(int detectorRow){
  previousButtonDetector_->setEnabled(detectorRow > 0);
  nextButtonDetector_->setEnabled(detectorRow < detectorModel_->rowCount() - 1);
}
 The code related to select button is :
void FeatureDetectorExtractor::selectButtonDetectorClikked(){
  QString messageString = tr("The selected  Feature Detector is : %1\n Detector parameter : %2\n ").arg(detectorComboBox_->currentText()).arg(detectorParameterEdit_->toPlainText());
  QMessageBox msgBox;
  msgBox.setWindowTitle("Feature Detector Info");
  msgBox.setText(messageString);
  msgBox.setStandardButtons(QMessageBox::Ok | QMessageBox::Retry);
  QString  detectorType, detectorParameter;
  detectorType = detectorComboBox_->currentText();
  detectorParameter = detectorParameterEdit_->toPlainText();
  int ret = msgBox.exec();
  switch (ret) {
  case QMessageBox::Ok:
    disconnectDetectorButton();
    if (detectorType.compare("ORB") == 0){
      createORB_detector(detectorParameter); // The function related to ORB
    }
    else if (detectorType.compare("SURF") == 0){
      createSURF_detector(detectorParameter);// related to SURF 
    }
    else if (detectorType.compare("SIFT") == 0){
      createSIFT_detector(detectorParameter);
    }
    else if (detectorType.compare("FAST") == 0){
      createFAST_detector(detectorParameter);
    }

    else if (detectorType.compare("BRISK") == 0){
      createBRISK_detector(detectorParameter);
    }
    else{
      createKAZE_detector(detectorParameter);
    }
    
  case QMessageBox::Retry:
    break;
  }
}

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[anda_skoa]

And again, no code whatsoever related to changing any model or list or combobox.
Great work!

Are you making this up as you go along?

Cheers,
_