ProjectExplorer: Introduce an AspectContainer class

For further use in conglomerates like OverrideMakeFlagAspect.

Change-Id: I845ff085d15779e43431ab3858c5c1b55824f694
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/plugins/projectexplorer/projectconfigurationaspects.cpp

@@ -150,6 +150,12 @@ public:
     QStringList m_value;
 };
 
+class AspectContainerPrivate
+{
+public:
+    QList<ProjectConfigurationAspect *> m_items;
+};
+
 } // Internal
 
 /*!
@@ -870,4 +876,39 @@ void StringListAspect::setValue(const QStringList &value)
     d->m_value = value;
 }
 
+/*!
+    \class ProjectExplorer::AspectContainer
+*/
+
+AspectContainer::AspectContainer()
+    : d(new Internal::AspectContainerPrivate)
+{}
+
+AspectContainer::~AspectContainer() = default;
+
+void AspectContainer::addAspectHelper(ProjectConfigurationAspect *aspect)
+{
+    d->m_items.append(aspect);
+}
+
+void AspectContainer::addToLayout(LayoutBuilder &builder)
+{
+    for (ProjectConfigurationAspect *aspect : d->m_items) {
+        if (aspect->isVisible())
+            aspect->addToLayout(builder);
+    }
+}
+
+void AspectContainer::fromMap(const QVariantMap &map)
+{
+    for (ProjectConfigurationAspect *aspect : d->m_items)
+        aspect->fromMap(map);
+}
+
+void AspectContainer::toMap(QVariantMap &map) const
+{
+    for (ProjectConfigurationAspect *aspect : d->m_items)
+        aspect->toMap(map);
+}
+
 } // namespace ProjectExplorer

src/plugins/projectexplorer/projectconfigurationaspects.h

@@ -37,6 +37,7 @@
 namespace ProjectExplorer {
 
 namespace Internal {
+class AspectContainerPrivate;
 class BoolAspectPrivate;
 class IntegerAspectPrivate;
 class SelectionAspectPrivate;
@@ -256,6 +257,33 @@ private:
     std::unique_ptr<Internal::StringListAspectPrivate> d;
 };
 
+class PROJECTEXPLORER_EXPORT AspectContainer : public ProjectConfigurationAspect
+{
+    Q_OBJECT
+
+public:
+    AspectContainer();
+    ~AspectContainer() override;
+
+    template <class Aspect, typename ...Args>
+    Aspect *addAspect(Args && ...args)
+    {
+        auto aspect = new Aspect(args...);
+        addAspectHelper(aspect);
+        return aspect;
+    }
+
+    void addToLayout(LayoutBuilder &builder) override;
+
+    void fromMap(const QVariantMap &map) override;
+    void toMap(QVariantMap &map) const override;
+
+private:
+    void addAspectHelper(ProjectConfigurationAspect *aspect);
+
+    std::unique_ptr<Internal::AspectContainerPrivate> d;
+};
+
 // FIXME: For migration. Remove after 4.15
 using BaseBoolAspect = BoolAspect;
 using BaseIntegerAspect = IntegerAspect;