Allow setting breakpoints from the icon border

Adds a convenient way to set a breakpoint.

addons/gdbplugin/plugin_kategdb.cpp

@@ -292,6 +292,13 @@ KatePluginGDBView::KatePluginGDBView(KTextEditor::Plugin *plugin, KTextEditor::M
 
     connect(m_mainWin, &KTextEditor::MainWindow::unhandledShortcutOverride, this, &KatePluginGDBView::handleEsc);
 
+    const auto documents = KTextEditor::Editor::instance()->application()->documents();
+    for (auto doc : documents) {
+        enableBreakpointMarks(doc);
+    }
+
+    connect(KTextEditor::Editor::instance()->application(), &KTextEditor::Application::documentCreated, this, &KatePluginGDBView::enableBreakpointMarks);
+
     m_toolView->installEventFilter(this);
 
     m_mainWin->guiFactory()->addClient(this);
@@ -396,8 +403,6 @@ void KatePluginGDBView::slotBreakpointSet(const QUrl &file, int line)
     KTextEditor::MarkInterfaceV2 *iface = qobject_cast<KTextEditor::MarkInterfaceV2 *>(m_kateApplication->findUrl(file));
 
     if (iface) {
-        iface->setMarkDescription(KTextEditor::MarkInterface::BreakpointActive, i18n("Breakpoint"));
-        iface->setMarkIcon(KTextEditor::MarkInterface::BreakpointActive, QIcon::fromTheme(QStringLiteral("media-playback-pause")));
         iface->addMark(line, KTextEditor::MarkInterface::BreakpointActive);
     }
 }
@@ -818,6 +823,17 @@ void KatePluginGDBView::handleEsc(QEvent *e)
     }
 }
 
+void KatePluginGDBView::enableBreakpointMarks(KTextEditor::Document *document)
+{
+    KTextEditor::MarkInterfaceV2 *iface = qobject_cast<KTextEditor::MarkInterfaceV2 *>(document);
+
+    if (iface) {
+        iface->setEditableMarks(iface->editableMarks() | KTextEditor::MarkInterface::BreakpointActive);
+        iface->setMarkDescription(KTextEditor::MarkInterface::BreakpointActive, i18n("Breakpoint"));
+        iface->setMarkIcon(KTextEditor::MarkInterface::BreakpointActive, QIcon::fromTheme(QStringLiteral("media-playback-pause")));
+    }
+}
+
 void KatePluginGDBView::displayMessage(const QString &msg, KTextEditor::Message::MessageType level)
 {
     KTextEditor::View *kv = m_mainWin->activeView();

addons/gdbplugin/plugin_kategdb.h

@@ -90,6 +90,7 @@ private Q_SLOTS:
     void addErrorText(QString const &text);
     void clearMarks();
     void handleEsc(QEvent *e);
+    void enableBreakpointMarks(KTextEditor::Document *document);
 
 protected:
     bool eventFilter(QObject *obj, QEvent *ev) override;