From bd7f0f395593462191c8fcc66d5f7e0e5dc4e1be Mon Sep 17 00:00:00 2001
From: Matthias Koefferlein <matthias@klayout.de>
Date: Sat, 2 Sep 2023 01:15:15 +0200
Subject: [PATCH] Macro editor: provide a 'Tabs' context menu for the tab bar
 which allows selecting a tab from a list

---
 src/lay/lay/layMacroEditorDialog.cc | 39 +++++++++++++++++++++++++++++
 src/lay/lay/layMacroEditorDialog.h  |  3 +++
 2 files changed, 42 insertions(+)

diff --git a/src/lay/lay/layMacroEditorDialog.cc b/src/lay/lay/layMacroEditorDialog.cc
index 6129038ee..d3e7c6259 100644
--- a/src/lay/lay/layMacroEditorDialog.cc
+++ b/src/lay/lay/layMacroEditorDialog.cc
@@ -429,6 +429,17 @@ MacroEditorDialog::MacroEditorDialog (lay::Dispatcher *pr, lym::MacroCollection
   connect (action, SIGNAL (triggered ()), this, SLOT (close_all_right ()));
   tabWidget->addAction (action);
 
+  action = new QAction ();
+  action->setSeparator (true);
+  tabWidget->addAction (action);
+
+  mp_tabs_menu = new QMenu ();
+
+  action = new QAction (tr ("Tabs"));
+  action->setMenu (mp_tabs_menu);
+  connect (mp_tabs_menu, SIGNAL (aboutToShow ()), this, SLOT (tabs_menu_about_to_show ()));
+  tabWidget->addAction (action);
+
   dbgOn->setEnabled (true);
   runButton->setEnabled (true);
   runThisButton->setEnabled (true);
@@ -672,6 +683,34 @@ MacroEditorDialog::instance ()
   return s_macro_editor_instance;
 }
 
+void
+MacroEditorDialog::tab_menu_selected ()
+{
+  QAction *action = dynamic_cast<QAction *> (sender ());
+  if (action) {
+    tabWidget->setCurrentIndex (action->data ().toInt ());
+  }
+}
+
+void
+MacroEditorDialog::tabs_menu_about_to_show ()
+{
+  mp_tabs_menu->clear ();
+
+  for (int i = 0; i < tabWidget->count (); ++i) {
+    MacroEditorPage *page = dynamic_cast<MacroEditorPage *> (tabWidget->widget (i));
+    if (page) {
+      QAction *action = new QAction (tl::to_qstring (page->path ()));
+      action->setData (i);
+      connect (action, SIGNAL (triggered ()), this, SLOT (tab_menu_selected ()));
+      if (page->macro () == mp_run_macro) {
+        action->setIcon (QIcon (":/run_16px.png"));
+      }
+      mp_tabs_menu->addAction (action);
+    }
+  }
+}
+
 void
 MacroEditorDialog::select_category (const std::string &cat)
 {
diff --git a/src/lay/lay/layMacroEditorDialog.h b/src/lay/lay/layMacroEditorDialog.h
index 71c78ca02..c17f9e291 100644
--- a/src/lay/lay/layMacroEditorDialog.h
+++ b/src/lay/lay/layMacroEditorDialog.h
@@ -233,6 +233,8 @@ private slots:
   void del_watches ();
   void clear_watches ();
   void set_debugging_on (bool on);
+  void tabs_menu_about_to_show ();
+  void tab_menu_selected ();
 
   //  edit trace navigation
   void forward ();
@@ -359,6 +361,7 @@ private:
   std::vector<QString> m_changed_files, m_removed_files;
   tl::DeferredMethod<MacroEditorDialog> dm_refresh_file_watcher;
   tl::DeferredMethod<MacroEditorDialog> dm_update_ui_to_run_mode;
+  QMenu *mp_tabs_menu;
 };
 
 }