undocking/detaching toolviews to regular windows instead of tool windows

[René J.V. Bertin]

On Thursday October 12 2017 15:43:16 Kevin Funk wrote:
>+        if (auto w = widget()) {
>+            // turn into top-level window
>+            w->setParent(nullptr);
>+            w->setWindowFlag(Qt::Window, true);
>+            w->show();
>

You'd want to add a close() after the w->show() to hide the now empty IdealDockWidget instance. And it (the instance) will need to save w, otherwise you'll get a crash when trying to re-attach the view:

@@ -140,6 +172,23 @@ void IdealDockWidget::contextMenuRequested(const QPoint &point)
     setShortcut->setToolTip(i18n("Use this shortcut to trigger visibility of the toolview."));
 
     menu.addSeparator();
+
+    QAction *separateWindow = nullptr;
+    if (isFloating()) {
+        separateWindow = menu.addAction(i18n("Turn into separate window"));
+        connect(separateWindow, &QAction::triggered, this, [this]() {
+            if (auto w = widget()) {
+                // turn into top-level window
+                qCWarning(SUBLIME) << "reparenting" << this << "->" << w << "away from" << w->parent();
+                m_windowWidget = w;
+                w->setParent(nullptr);
+                w->setWindowFlags(Qt::Window);
+                w->show();
+                close();
+            } } );
+    }
+
+    menu.addSeparator();
     QAction* remove = menu.addAction(QIcon::fromTheme(QStringLiteral("dialog-close")), i18n("Remove Toolview"));
 
     QAction* triggered = menu.exec(senderWidget->mapToGlobal(point));
@@ -176,11 +225,17 @@ void IdealDockWidget::contextMenuRequested(const QPoint &point)
 
             return;
         } else if ( triggered == detach ) {
-            setFloating(true);
-            m_area->raiseToolView(m_view);
+            if (!m_windowWidget) {
+                setFloating(true);
+                m_area->raiseToolView(m_view);
+            }
             return;
         }
 
+        if (m_windowWidget && triggered != separateWindow) {
+            setWidget(m_windowWidget);
+        }
+
         if (isFloating()) {
             setFloating(false);
         }
@@ -197,9 +252,11 @@ void IdealDockWidget::contextMenuRequested(const QPoint &point)
 
         Area *area = m_area;
         View *view = m_view;
-        /* This call will delete *this, so we no longer
-           can access member variables. */
-        m_area->moveToolView(m_view, pos);
-        area->raiseToolView(view);
+        if (m_area) {
+            /* This call will delete *this, so we no longer
+               can access member variables. */
+            m_area->moveToolView(m_view, pos);
+            area->raiseToolView(view);
+        }
     }
 }