Qt 5.7 | Qt WebEngine | WebEngine Demo Browser Example | savepagedialog.cpp Example File

Qt 5.7.1 Reference Documentation

# savepagedialog.cpp Example File

webenginewidgets/demobrowser/savepagedialog.cpp

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      #include "savepagedialog.h"
      #include "ui_savepagedialog.h"

      #include <QtCore/QDir>
      #include <QtWidgets/QFileDialog>

      const QWebEngineDownloadItem::SavePageFormat SavePageDialog::m_indexToFormatTable[] = {
          QWebEngineDownloadItem::SingleHtmlSaveFormat,
          QWebEngineDownloadItem::CompleteHtmlSaveFormat,
          QWebEngineDownloadItem::MimeHtmlSaveFormat
      };

      SavePageDialog::SavePageDialog(QWidget *parent, QWebEngineDownloadItem::SavePageFormat format,
                                     const QString &filePath)
          : QDialog(parent)
          , ui(new Ui::SavePageDialog)
      {
          ui->setupUi(this);
          ui->formatComboBox->setCurrentIndex(formatToIndex(format));
          setFilePath(filePath);
      }

      SavePageDialog::~SavePageDialog()
      {
          delete ui;
      }

      QWebEngineDownloadItem::SavePageFormat SavePageDialog::pageFormat() const
      {
          return indexToFormat(ui->formatComboBox->currentIndex());
      }

      QString SavePageDialog::filePath() const
      {
          return QDir::fromNativeSeparators(ui->filePathLineEdit->text());
      }

      void SavePageDialog::on_chooseFilePathButton_clicked()
      {
          QFileInfo fi(filePath());
          QFileDialog dlg(this, tr("Save Page As"), fi.absolutePath());
          dlg.setAcceptMode(QFileDialog::AcceptSave);
          dlg.setDefaultSuffix(suffixOfFormat(pageFormat()));
          dlg.selectFile(fi.absoluteFilePath());
          if (dlg.exec() != QDialog::Accepted)
              return;
          setFilePath(dlg.selectedFiles().first());
          ensureFileSuffix(pageFormat());
      }

      void SavePageDialog::on_formatComboBox_currentIndexChanged(int idx)
      {
          ensureFileSuffix(indexToFormat(idx));
      }

      int SavePageDialog::formatToIndex(QWebEngineDownloadItem::SavePageFormat format)
      {
          for (auto i : m_indexToFormatTable) {
              if (m_indexToFormatTable[i] == format)
                  return i;
          }
          Q_UNREACHABLE();
      }

      QWebEngineDownloadItem::SavePageFormat SavePageDialog::indexToFormat(int idx)
      {
          Q_ASSERT(idx >= 0 && size_t(idx) < (sizeof(m_indexToFormatTable)
                                              / sizeof(QWebEngineDownloadItem::SavePageFormat)));
          return m_indexToFormatTable[idx];
      }

      QString SavePageDialog::suffixOfFormat(QWebEngineDownloadItem::SavePageFormat format)
      {
          if (format == QWebEngineDownloadItem::MimeHtmlSaveFormat)
              return QStringLiteral(".mhtml");
          return QStringLiteral(".html");
      }

      void SavePageDialog::setFilePath(const QString &filePath)
      {
          ui->filePathLineEdit->setText(QDir::toNativeSeparators(filePath));
      }

      void SavePageDialog::ensureFileSuffix(QWebEngineDownloadItem::SavePageFormat format)
      {
          QFileInfo fi(filePath());
          setFilePath(fi.absolutePath() + QLatin1Char('/') + fi.completeBaseName()
                      + suffixOfFormat(format));
      }