Remove ToolBox MainWindow dependency.

src/designer-plugins/qtkwidget.cpp

@@ -21,6 +21,9 @@
 
 using namespace Qtk;
 
+/// Static manager for all QtkWidget instances.
+QtkWidgetManager QtkWidget::mWidgetManager;
+
 /*******************************************************************************
  * Constructors, Destructors
  ******************************************************************************/
@@ -36,9 +39,11 @@ QtkWidget::QtkWidget(QWidget * parent, const QString & name, Scene * scene) :
     QOpenGLWidget(parent), mDebugLogger(Q_NULLPTR),
     mConsole(new DebugConsole(this, name)), mScene(Q_NULLPTR)
 {
+  setObjectName(name);
+  mWidgetManager.add_widget(this);
+
   setAcceptDrops(true);
   setScene(scene);
-  setObjectName(name);
   QSurfaceFormat format;
   format.setRenderableType(QSurfaceFormat::OpenGL);
   format.setProfile(QSurfaceFormat::CoreProfile);

src/designer-plugins/qtkwidget.h

@@ -119,6 +119,13 @@ namespace Qtk
        */
       void setScene(Qtk::Scene * scene);
 
+      /*************************************************************************
+       * Public Members
+       ************************************************************************/
+
+      /// Static manager for all QtkWidget instances.
+      static class QtkWidgetManager mWidgetManager;
+
     public slots:
 
       /**
@@ -212,6 +219,54 @@ namespace Qtk
       Qtk::DebugConsole * mConsole;
       bool mConsoleActive = true;
   };
+
+  /**
+   * Struct to help manage QtkWidget instances.
+   * When a QtkWidget is constructed we register it by calling add_widget().
+   * Widgets can be retrieved by their unique name.
+   */
+  struct QtkWidgetManager {
+      /**
+       * Get a QtkWidget by name.
+       *
+       * @param name The name of the QtkWidget to retrieve.
+       */
+      QtkWidget * get_widget(const QString & name = "QtkWidget")
+      {
+        if (mQtkWidgets.count(name) == 0) {
+          qDebug() << this
+                   << " Attempt to get QtkWidget that doesn't exist: " << name;
+          return Q_NULLPTR;
+        }
+        return mQtkWidgets[name];
+      }
+
+      /**
+       * Register a QtkWidget with this manager.
+       *
+       * If the QObject::objectName is unset the widget and QObject is renamed
+       * 'Unamed-QtkWidget'.
+       *
+       * @param widget Pointer to the QtkWidget to register to this manager.
+       */
+      void add_widget(QtkWidget * widget)
+      {
+        auto name = widget->objectName();
+        name = name == "" ? "Unamed-QtkWidget" : name;
+        if (mQtkWidgets.count(name)) {
+          qDebug()
+              << "[QtkWidgetManager " << this
+              << " ] Failed to add a QtkWidget with the previously used name '"
+              << name << "'";
+        }
+        qDebug() << this << " Adding new QtkWidget named '" << name << "'";
+        mQtkWidgets[name] = widget;
+        return;
+      }
+
+    private:
+      std::unordered_map<QString, QtkWidget *> mQtkWidgets;
+  };
 }  // namespace Qtk
 
 #endif  // QTK_QTKWIDGET_H

src/designer-plugins/toolbox.cpp

@@ -8,7 +8,7 @@
 */
 
 #include "toolbox.h"
-#include "app/qtkmainwindow.h"
+#include "qtkwidget.h"
 #include "ui_toolbox.h"
 
 #include <QFormLayout>
@@ -25,7 +25,7 @@ ToolBox::ToolBox(QWidget * parent) : QDockWidget(parent), ui(new Ui::ToolBox)
 void ToolBox::updateFocus(const QString & name)
 {
   auto object =
-      MainWindow::getMainWindow()->getQtkWidget()->getScene()->getObject(name);
+      Qtk::QtkWidget::mWidgetManager.get_widget()->getScene()->getObject(name);
   if (object != Q_NULLPTR) {
     removePages();
     createPageProperties(object);