external tools for nonwebengine viewer

src/librssguard/gui/messagetextbrowser.cpp

@@ -3,9 +3,13 @@
 #include "gui/messagetextbrowser.h"
 
 #include "miscellaneous/application.h"
+#include "miscellaneous/externaltool.h"
 #include "miscellaneous/iconfactory.h"
 #include "network-web/networkfactory.h"
 
+#include <QContextMenuEvent>
+#include <QFileIconProvider>
+
 MessageTextBrowser::MessageTextBrowser(QWidget* parent) : QTextBrowser(parent) {
   setAutoFillBackground(true);
   setFrameShape(QFrame::StyledPanel);
@@ -44,6 +48,50 @@ QSize MessageTextBrowser::sizeHint() const {
   return doc_size;
 }
 
+void MessageTextBrowser::contextMenuEvent(QContextMenuEvent* event) {
+  event->accept();
+
+  auto* menu = createStandardContextMenu();
+
+  if (menu == nullptr) {
+    return;
+  }
+
+  auto anchor = anchorAt(event->pos());
+
+  if (!anchor.isEmpty()) {
+    QFileIconProvider icon_provider;
+    QMenu* menu_ext_tools = new QMenu(tr("Open with external tool"), menu);
+    auto tools = ExternalTool::toolsFromSettings();
+
+    menu_ext_tools->setIcon(qApp->icons()->fromTheme(QSL("document-open")));
+
+    for (const ExternalTool& tool : qAsConst(tools)) {
+      QAction* act_tool = new QAction(QFileInfo(tool.executable()).fileName(), menu_ext_tools);
+
+      act_tool->setIcon(icon_provider.icon(tool.executable()));
+      act_tool->setToolTip(tool.executable());
+      act_tool->setData(QVariant::fromValue(tool));
+      menu_ext_tools->addAction(act_tool);
+
+      connect(act_tool, &QAction::triggered, this, [act_tool, anchor]() {
+        act_tool->data().value<ExternalTool>().run(anchor);
+      });
+    }
+
+    if (menu_ext_tools->actions().isEmpty()) {
+      QAction* act_not_tools = new QAction("No external tools activated");
+
+      act_not_tools->setEnabled(false);
+      menu_ext_tools->addAction(act_not_tools);
+    }
+
+    menu->addMenu(menu_ext_tools);
+  }
+
+  menu->popup(event->globalPos());
+}
+
 void MessageTextBrowser::wheelEvent(QWheelEvent* event) {
   QTextBrowser::wheelEvent(event);
   qApp->settings()->setValue(GROUP(Messages), Messages::PreviewerFontStandard, font().toString());

src/librssguard/gui/messagetextbrowser.h

@@ -18,6 +18,7 @@ class MessageTextBrowser : public QTextBrowser {
     virtual QSize sizeHint() const;
 
   protected:
+    virtual void contextMenuEvent(QContextMenuEvent* event);
     virtual void wheelEvent(QWheelEvent* event);
     virtual void resizeEvent (QResizeEvent* event);