BundleObservationView.cpp

 
/* SPDX-License-Identifier: CC0-1.0 */
 
#include "BundleObservationView.h"
 
#include <QDebug>
#include <QFile>
#include <QFontDatabase>
#include <QHeaderView>
#include <QSizePolicy>
#include <QStandardItem>
#include <QStandardItemModel>
#include <QString>
#include <QStringList>
#include <QTableView>
#include <QTextEdit>
#include <QTextStream>
#include <QVBoxLayout>
 
 
namespace Isis {
 
  BundleObservationView::BundleObservationView(FileItemQsp fileItem, QWidget *parent):
                         AbstractProjectItemView(parent) {
 
    if (fileItem->fileName().contains(".csv")) {
      displayCsvFile(fileItem);
    }
    else if (fileItem->fileName().contains(".txt")) {
      displayTextFile(fileItem);
    }
  }
 
 
  void BundleObservationView::displayCsvFile(FileItemQsp fileItem) {
    QStandardItemModel *model = new QStandardItemModel;
 
    if (!QFile::exists(fileItem->fileName())) {
      return;
    }
 
    QFile file(fileItem->fileName());
    if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
      return;
    }
 
    int numHeaderLines = 3;
    if (fileItem->fileName().contains("images")) {
      numHeaderLines = 2;
    }
 
    QTextStream in(&file);                 // read to text stream
 
    // read and populate header from first two or three lines
    QString header1;
    QString header2;
    QString header3;
    QStringList lineToken1;
    QStringList lineToken2;
    QStringList lineToken3;
 
    header1 = in.readLine();
    lineToken1 = header1.split(",");
    header2 = in.readLine();
    lineToken2 = header2.split(",");
 
    if (numHeaderLines == 2) {
      for (int i = 0; i < lineToken1.size(); i++) {
        QString t1 = lineToken1.at(i);
        QString t2 = lineToken2.at(i);
        QString head = t1 + "\n" + t2;
        QStandardItem *v1 = new QStandardItem(head);
        model->setHorizontalHeaderItem(i,v1);
      }
    }
    if (numHeaderLines == 3) {
      header3 = in.readLine();
      lineToken3 = header3.split(",");
 
      lineToken1.append("");
      lineToken2.append("");
 
      for (int i = 0; i < lineToken3.size(); i++) {
        QString t1 = lineToken1.at(i);
        QString t2 = lineToken2.at(i);
        QString t3 = lineToken3.at(i);
        QString head = t1 + "\n" + t2 + "\n" + t3;
        QStandardItem *v1 = new QStandardItem(head);
        model->setHorizontalHeaderItem(i,v1);
      }
    }
 
    // populate remainder of table
    int lineindex = 0;
    while (!in.atEnd()) {
      QString fileLine = in.readLine();
 
      // parse line into separate pieces(tokens) with "," as the delimiter
      QStringList lineToken = fileLine.split(",", QString::SkipEmptyParts);
 
      bool rejected = false;
      if (lineToken.at(lineToken.size()-1) == "*") {
        rejected = true;
      }
 
      // load parsed data to model accordingly
      for (int i = 0; i < lineToken.size(); i++) {
        QString value = lineToken.at(i);
 
        QStandardItem *item = new QStandardItem(value);
 
        if (rejected) {
          item->setData(QColor(200,0,0), Qt::BackgroundRole);
        }
 
        model->setItem(lineindex, i, item);
      }
      lineindex++;
    }
 
    file.close();
 
    QTableView *qtable=new QTableView();
    qtable->setModel(model);
    qtable->setSortingEnabled(true);
 
    // resizes to contents based on entire column
    // NOTE: QHeaderView::ResizeToContents does not allow user to resize by dragging column divider
    qtable->horizontalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents);
 
    setCentralWidget(qtable);
 
    QSizePolicy policy = sizePolicy();
    policy.setHorizontalPolicy(QSizePolicy::Expanding);
    policy.setVerticalPolicy(QSizePolicy::Expanding);
    setSizePolicy(policy);
  }
 
 
  void BundleObservationView::displayTextFile(FileItemQsp fileItem) {
 
    if (!QFile::exists(fileItem->fileName())) {
      return;
    }
 
    QFile file(fileItem->fileName());
    if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
      return;
    }
 
    QTextStream in(&file);
    QTextEdit *qText=new QTextEdit();
 
    // From QFontDatabase::systemFont(SystemFont type) method description: returns most adequate
    //      font for a given typecase (here FixedFont) for proper integration with system's look and
    //      feel.
    const QFont fixedFont = QFontDatabase::systemFont(QFontDatabase::FixedFont);
    qText->setFontFamily(fixedFont.family());
 
    while (!in.atEnd()) {
      qText->append(in.readLine());
    }
 
    file.close();
 
    setCentralWidget(qText);
    qText->moveCursor(QTextCursor::Start);
 
    QSizePolicy policy = sizePolicy();
    policy.setHorizontalPolicy(QSizePolicy::Expanding);
    policy.setVerticalPolicy(QSizePolicy::Expanding);
    setSizePolicy(policy);
  }
 
 
  BundleObservationView::~BundleObservationView() {
  }
}