settings.cpp Example File | Qt WebKit Examples 5.9

Qt 5.9 | Qt WebKit Examples | Tab Browser | settings.cpp Example File

Qt 5.9.2 Reference Documentation

# settings.cpp Example File

webkitwidgets/browser/settings.cpp

      /****************************************************************************
      **
      ** Copyright (C) 2015 The Qt Company Ltd.
      ** Contact: http://www.qt.io/licensing/
      **
      ** This file is part of the demonstration applications of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:LGPL21$
      ** Commercial License Usage
      ** Licensees holding valid commercial Qt licenses may use this file in
      ** accordance with the commercial license agreement provided with the
      ** Software or, alternatively, in accordance with the terms contained in
      ** a written agreement between you and The Qt Company. For licensing terms
      ** and conditions see http://www.qt.io/terms-conditions. For further
      ** information use the contact form at http://www.qt.io/contact-us.
      **
      ** GNU Lesser General Public License Usage
      ** Alternatively, this file may be used under the terms of the GNU Lesser
      ** General Public License version 2.1 or version 3 as published by the Free
      ** Software Foundation and appearing in the file LICENSE.LGPLv21 and
      ** LICENSE.LGPLv3 included in the packaging of this file. Please review the
      ** following information to ensure the GNU Lesser General Public License
      ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
      ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
      **
      ** As a special exception, The Qt Company gives you certain additional
      ** rights. These rights are described in The Qt Company LGPL Exception
      ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
      **
      ** $QT_END_LICENSE$
      **
      ****************************************************************************/

      #include "settings.h"

      #include "browserapplication.h"
      #include "browsermainwindow.h"
      #include "cookiejar.h"
      #include "history.h"
      #include "networkaccessmanager.h"
      #include "webview.h"

      #include <QtCore/QSettings>
      #include <QtWidgets/QtWidgets>
      #include <QtWebKitWidgets>

      SettingsDialog::SettingsDialog(QWidget *parent)
          : QDialog(parent)
      {
          setupUi(this);
          connect(exceptionsButton, SIGNAL(clicked()), this, SLOT(showExceptions()));
          connect(setHomeToCurrentPageButton, SIGNAL(clicked()), this, SLOT(setHomeToCurrentPage()));
          connect(cookiesButton, SIGNAL(clicked()), this, SLOT(showCookies()));
          connect(standardFontButton, SIGNAL(clicked()), this, SLOT(chooseFont()));
          connect(fixedFontButton, SIGNAL(clicked()), this, SLOT(chooseFixedFont()));

          loadDefaults();
          loadFromSettings();
      }

      void SettingsDialog::loadDefaults()
      {
          QWebSettings *defaultSettings = QWebSettings::globalSettings();
          QString standardFontFamily = defaultSettings->fontFamily(QWebSettings::StandardFont);
          int standardFontSize = defaultSettings->fontSize(QWebSettings::DefaultFontSize);
          standardFont = QFont(standardFontFamily, standardFontSize);
          standardLabel->setText(QString(QLatin1String("%1 %2")).arg(standardFont.family()).arg(standardFont.pointSize()));

          QString fixedFontFamily = defaultSettings->fontFamily(QWebSettings::FixedFont);
          int fixedFontSize = defaultSettings->fontSize(QWebSettings::DefaultFixedFontSize);
          fixedFont = QFont(fixedFontFamily, fixedFontSize);
          fixedLabel->setText(QString(QLatin1String("%1 %2")).arg(fixedFont.family()).arg(fixedFont.pointSize()));

          downloadsLocation->setText(QStandardPaths::writableLocation(QStandardPaths::DesktopLocation));

          enableJavascript->setChecked(defaultSettings->testAttribute(QWebSettings::JavascriptEnabled));
          enablePlugins->setChecked(defaultSettings->testAttribute(QWebSettings::PluginsEnabled));
      }

      void SettingsDialog::loadFromSettings()
      {
          QSettings settings;
          settings.beginGroup(QLatin1String("MainWindow"));
          QString defaultHome = QLatin1String("http://qt-project.org/");
          homeLineEdit->setText(settings.value(QLatin1String("home"), defaultHome).toString());
          settings.endGroup();

          settings.beginGroup(QLatin1String("history"));
          int historyExpire = settings.value(QLatin1String("historyExpire")).toInt();
          int idx = 0;
          switch (historyExpire) {
          case 1: idx = 0; break;
          case 7: idx = 1; break;
          case 14: idx = 2; break;
          case 30: idx = 3; break;
          case 365: idx = 4; break;
          case -1: idx = 5; break;
          default:
              idx = 5;
          }
          expireHistory->setCurrentIndex(idx);
          settings.endGroup();

          settings.beginGroup(QLatin1String("downloadmanager"));
          QString downloadDirectory = settings.value(QLatin1String("downloadDirectory"), downloadsLocation->text()).toString();
          downloadsLocation->setText(downloadDirectory);
          settings.endGroup();

          settings.beginGroup(QLatin1String("general"));
          openLinksIn->setCurrentIndex(settings.value(QLatin1String("openLinksIn"), openLinksIn->currentIndex()).toInt());

          settings.endGroup();

          // Appearance
          settings.beginGroup(QLatin1String("websettings"));
          fixedFont = qvariant_cast<QFont>(settings.value(QLatin1String("fixedFont"), fixedFont));
          standardFont = qvariant_cast<QFont>(settings.value(QLatin1String("standardFont"), standardFont));

          standardLabel->setText(QString(QLatin1String("%1 %2")).arg(standardFont.family()).arg(standardFont.pointSize()));
          fixedLabel->setText(QString(QLatin1String("%1 %2")).arg(fixedFont.family()).arg(fixedFont.pointSize()));

          enableJavascript->setChecked(settings.value(QLatin1String("enableJavascript"), enableJavascript->isChecked()).toBool());
          enablePlugins->setChecked(settings.value(QLatin1String("enablePlugins"), enablePlugins->isChecked()).toBool());
          userStyleSheet->setText(settings.value(QLatin1String("userStyleSheet")).toUrl().toString());
          settings.endGroup();

          // Privacy
          settings.beginGroup(QLatin1String("cookies"));

          QByteArray value = settings.value(QLatin1String("acceptCookies"), QLatin1String("AcceptOnlyFromSitesNavigatedTo")).toByteArray();
          QMetaEnum acceptPolicyEnum = CookieJar::staticMetaObject.enumerator(CookieJar::staticMetaObject.indexOfEnumerator("AcceptPolicy"));
          CookieJar::AcceptPolicy acceptCookies = acceptPolicyEnum.keyToValue(value) == -1 ?
                              CookieJar::AcceptOnlyFromSitesNavigatedTo :
                              static_cast<CookieJar::AcceptPolicy>(acceptPolicyEnum.keyToValue(value));
          switch(acceptCookies) {
          case CookieJar::AcceptAlways:
              acceptCombo->setCurrentIndex(0);
              break;
          case CookieJar::AcceptNever:
              acceptCombo->setCurrentIndex(1);
              break;
          case CookieJar::AcceptOnlyFromSitesNavigatedTo:
              acceptCombo->setCurrentIndex(2);
              break;
          }

          value = settings.value(QLatin1String("keepCookiesUntil"), QLatin1String("Expire")).toByteArray();
          QMetaEnum keepPolicyEnum = CookieJar::staticMetaObject.enumerator(CookieJar::staticMetaObject.indexOfEnumerator("KeepPolicy"));
          CookieJar::KeepPolicy keepCookies = keepPolicyEnum.keyToValue(value) == -1 ?
                              CookieJar::KeepUntilExpire :
                              static_cast<CookieJar::KeepPolicy>(keepPolicyEnum.keyToValue(value));
          switch(keepCookies) {
          case CookieJar::KeepUntilExpire:
              keepUntilCombo->setCurrentIndex(0);
              break;
          case CookieJar::KeepUntilExit:
              keepUntilCombo->setCurrentIndex(1);
              break;
          case CookieJar::KeepUntilTimeLimit:
              keepUntilCombo->setCurrentIndex(2);
              break;
          }
          settings.endGroup();

          // Proxy
          settings.beginGroup(QLatin1String("proxy"));
          proxySupport->setChecked(settings.value(QLatin1String("enabled"), false).toBool());
          proxyType->setCurrentIndex(settings.value(QLatin1String("type"), 0).toInt());
          proxyHostName->setText(settings.value(QLatin1String("hostName")).toString());
          proxyPort->setValue(settings.value(QLatin1String("port"), 1080).toInt());
          proxyUserName->setText(settings.value(QLatin1String("userName")).toString());
          proxyPassword->setText(settings.value(QLatin1String("password")).toString());
          settings.endGroup();
      }

      void SettingsDialog::saveToSettings()
      {
          QSettings settings;
          settings.beginGroup(QLatin1String("MainWindow"));
          settings.setValue(QLatin1String("home"), homeLineEdit->text());
          settings.endGroup();

          settings.beginGroup(QLatin1String("general"));
          settings.setValue(QLatin1String("openLinksIn"), openLinksIn->currentIndex());
          settings.endGroup();

          settings.beginGroup(QLatin1String("history"));
          int historyExpire = expireHistory->currentIndex();
          int idx = -1;
          switch (historyExpire) {
          case 0: idx = 1; break;
          case 1: idx = 7; break;
          case 2: idx = 14; break;
          case 3: idx = 30; break;
          case 4: idx = 365; break;
          case 5: idx = -1; break;
          }
          settings.setValue(QLatin1String("historyExpire"), idx);
          settings.endGroup();

          // Appearance
          settings.beginGroup(QLatin1String("websettings"));
          settings.setValue(QLatin1String("fixedFont"), fixedFont);
          settings.setValue(QLatin1String("standardFont"), standardFont);
          settings.setValue(QLatin1String("enableJavascript"), enableJavascript->isChecked());
          settings.setValue(QLatin1String("enablePlugins"), enablePlugins->isChecked());
          QString userStyleSheetString = userStyleSheet->text();
          if (QFile::exists(userStyleSheetString))
              settings.setValue(QLatin1String("userStyleSheet"), QUrl::fromLocalFile(userStyleSheetString));
          else
              settings.setValue(QLatin1String("userStyleSheet"), QUrl(userStyleSheetString));
          settings.endGroup();

          //Privacy
          settings.beginGroup(QLatin1String("cookies"));

          CookieJar::KeepPolicy keepCookies;
          switch(acceptCombo->currentIndex()) {
          default:
          case 0:
              keepCookies = CookieJar::KeepUntilExpire;
              break;
          case 1:
              keepCookies = CookieJar::KeepUntilExit;
              break;
          case 2:
              keepCookies = CookieJar::KeepUntilTimeLimit;
              break;
          }
          QMetaEnum acceptPolicyEnum = CookieJar::staticMetaObject.enumerator(CookieJar::staticMetaObject.indexOfEnumerator("AcceptPolicy"));
          settings.setValue(QLatin1String("acceptCookies"), QLatin1String(acceptPolicyEnum.valueToKey(keepCookies)));

          CookieJar::KeepPolicy keepPolicy;
          switch(keepUntilCombo->currentIndex()) {
              default:
          case 0:
              keepPolicy = CookieJar::KeepUntilExpire;
              break;
          case 1:
              keepPolicy = CookieJar::KeepUntilExit;
              break;
          case 2:
              keepPolicy = CookieJar::KeepUntilTimeLimit;
              break;
          }

          QMetaEnum keepPolicyEnum = CookieJar::staticMetaObject.enumerator(CookieJar::staticMetaObject.indexOfEnumerator("KeepPolicy"));
          settings.setValue(QLatin1String("keepCookiesUntil"), QLatin1String(keepPolicyEnum.valueToKey(keepPolicy)));

          settings.endGroup();

          // proxy
          settings.beginGroup(QLatin1String("proxy"));
          settings.setValue(QLatin1String("enabled"), proxySupport->isChecked());
          settings.setValue(QLatin1String("type"), proxyType->currentIndex());
          settings.setValue(QLatin1String("hostName"), proxyHostName->text());
          settings.setValue(QLatin1String("port"), proxyPort->text());
          settings.setValue(QLatin1String("userName"), proxyUserName->text());
          settings.setValue(QLatin1String("password"), proxyPassword->text());
          settings.endGroup();

          BrowserApplication::instance()->loadSettings();
          BrowserApplication::networkAccessManager()->loadSettings();
          BrowserApplication::cookieJar()->loadSettings();
          BrowserApplication::historyManager()->loadSettings();
      }

      void SettingsDialog::accept()
      {
          saveToSettings();
          QDialog::accept();
      }

      void SettingsDialog::showCookies()
      {
          CookiesDialog *dialog = new CookiesDialog(BrowserApplication::cookieJar(), this);
          dialog->exec();
      }

      void SettingsDialog::showExceptions()
      {
          CookiesExceptionsDialog *dialog = new CookiesExceptionsDialog(BrowserApplication::cookieJar(), this);
          dialog->exec();
      }

      void SettingsDialog::chooseFont()
      {
          bool ok;
          QFont font = QFontDialog::getFont(&ok, standardFont, this);
          if ( ok ) {
              standardFont = font;
              standardLabel->setText(QString(QLatin1String("%1 %2")).arg(font.family()).arg(font.pointSize()));
          }
      }

      void SettingsDialog::chooseFixedFont()
      {
          bool ok;
          QFont font = QFontDialog::getFont(&ok, fixedFont, this);
          if ( ok ) {
              fixedFont = font;
              fixedLabel->setText(QString(QLatin1String("%1 %2")).arg(font.family()).arg(font.pointSize()));
          }
      }

      void SettingsDialog::setHomeToCurrentPage()
      {
          BrowserMainWindow *mw = static_cast<BrowserMainWindow*>(parent());
          WebView *webView = mw->currentTab();
          if (webView)
              homeLineEdit->setText(webView->url().toString());
      }