Initial commit

Lts/Plugins/OnlineHelp/Gui/OnlineHelpViewer/online_help_viewer_dialog.cpp

@@ -0,0 +1,117 @@
+/**
+  * @RDE_HEADER@
+  * Online Help Viewer Dialog
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Astrid Müller, SGAS, 2018-04-10
+  */
+
+#include "online_help_viewer_dialog.h"
+#include "ui_online_help_viewer_dialog.h"
+
+#include <ngltranslator/ngltranslator.h>
+#include <ngltools/ngltools_filesystem.h>
+
+#include <QWebEngineView>
+#include <QWebEngineHistory>
+#include <QMenu>
+
+
+namespace OnlineHelp
+{
+OnlineHelpViewerDialog::OnlineHelpViewerDialog(bool isMain)
+  : LtsWidgets::LtsDialog(nullptr,
+                          isMain ? LtsWidgets::ButtonCombination::SeamlessDialog : LtsWidgets::ButtonCombination::CloseOnly,
+                          !isMain /* closable if NOT main */)
+  , m_ui(new Ui::OnlineHelpViewerDialog)
+  , m_logger(getLogger("onlineHelp"))
+{
+  m_ui->setupUi(this);
+}
+
+bool OnlineHelpViewerDialog::init(const QString &fileName)
+{
+  QString locale;
+
+  if (NGL::translationLocale() == "de_DE") // grrr..
+    locale = QStringLiteral("de_DE");
+  else
+    locale = QStringLiteral("en_GB");
+
+  QString helpDir = NGL::directory(NGL::FileType::ConfigFile, QStringLiteral("help"));
+  if (fileName.isEmpty())
+    helpDir += (locale + QStringLiteral("/index.html"));
+  else // filename given
+    helpDir += (locale + QStringLiteral("/%1.html").arg(fileName));
+
+  INFO_LOG(m_logger) << "helpDir=" << helpDir;
+
+#ifndef LTS_DEBUG
+  m_ui->lblPage->setVisible(false);
+#endif
+
+  connect(m_ui->wevOnlineHelpViewer, &QWebEngineView::loadFinished, this, [=](bool ok)
+  {
+    Q_UNUSED(ok);
+    QString url = m_ui->wevOnlineHelpViewer->page()->url().toString();
+    m_ui->lblPage->setText(url);
+  });
+
+  m_ui->wevOnlineHelpViewer->load(QUrl(QUrl::fromLocalFile(helpDir)));
+
+  m_ui->wevOnlineHelpViewer->setContextMenuPolicy(Qt::CustomContextMenu);
+  connect(m_ui->wevOnlineHelpViewer, &QWebEngineView::customContextMenuRequested,
+          this, &OnlineHelpViewerDialog::onContextMenuRequested);
+
+  return true;
+}
+
+OnlineHelpViewerDialog::~OnlineHelpViewerDialog()
+{
+  m_ui->wevOnlineHelpViewer->setParent(nullptr);
+  m_ui->wevOnlineHelpViewer->hide();
+  m_ui->wevOnlineHelpViewer->deleteLater();
+  delete m_ui;
+}
+
+void OnlineHelpViewerDialog::retranslate()
+{
+  translate(m_ui, tr("Online Help Viewer"));
+}
+
+void OnlineHelpViewerDialog::onContextMenuRequested(const QPoint &position)
+{
+  QMenu menu(m_ui->wevOnlineHelpViewer);
+  QAction *action = menu.addAction(tr("Next Page"), this, &OnlineHelpViewerDialog::onContextdMenuForwardRequested);
+  action->setEnabled(m_ui->wevOnlineHelpViewer->page()->history()->canGoForward());
+
+  action = menu.addAction(tr("Last Page"), this, &OnlineHelpViewerDialog::onContextdMenuBackRequested);
+
+  bool setEnable = (m_ui->wevOnlineHelpViewer->page()->history()->canGoBack()) &&
+                   (m_ui->wevOnlineHelpViewer->page()->history()->backItems(2).size() > 1);  // *)
+  // *) Die erste HistorySeite ist nach dem Aufschalten des Widgets immer leer.
+  //    Hiermit wird verhindert dass man in diese erste leere Seite zurueckgehen kann.
+
+  action->setEnabled(setEnable);
+
+  menu.addAction(tr("Reload Page"),  this, &OnlineHelpViewerDialog::onContextdMenuReloadRequested);
+  menu.exec(m_ui->wevOnlineHelpViewer->mapToGlobal(position));
+}
+
+void OnlineHelpViewerDialog::onContextdMenuForwardRequested()
+{
+  m_ui->wevOnlineHelpViewer->page()->triggerAction(QWebEnginePage::Forward);
+}
+
+void OnlineHelpViewerDialog::onContextdMenuBackRequested()
+{
+  m_ui->wevOnlineHelpViewer->page()->triggerAction(QWebEnginePage::Back);
+}
+
+void OnlineHelpViewerDialog::onContextdMenuReloadRequested()
+{
+  m_ui->wevOnlineHelpViewer->page()->triggerAction(QWebEnginePage::Reload);
+}
+
+} // namespace OnlineHelp