Rework how widget ownership works in Container

[libs/gltk.git] / source / panel.h

diff --git a/source/panel.h b/source/panel.h
index ad89a52b8f03ee20eed1dd71416e23c68484bccd..3061032789574f168c2bb2933f787d4f439c1284 100644 (file)
--- a/source/panel.h
+++ b/source/panel.h
@@ -1,14 +1,11 @@
-/* $Id$
-
-This file is part of libmspgltk
-Copyright © 2007  Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
 #ifndef MSP_GLTK_PANEL_H_
 #define MSP_GLTK_PANEL_H_
 
-#include "widget.h"
+#include <memory>
+#include <msp/core/typeregistry.h>
+#include "container.h"
+#include "layout.h"
+#include "mspgltk_api.h"
 
 namespace Msp {
 namespace GLtk {
@@ -18,56 +15,121 @@ Panels are containers for other widgets.  Panel styles should have a special
 part "children" to render the child widgets.  All properties of this part are
 ignored.
 */
-class Panel: public Widget
+class MSPGLTK_API Panel: public Container
 {
 public:
-       class Loader: public Widget::Loader
+       class Loader: public DataFile::DerivedObjectLoader<Panel, Widget::Loader>
        {
-       private:
-               Panel &pnl;
-               std::map<std::string, Widget *> &wdg_map;
-       
        public:
-               Loader(Panel &, std::map<std::string, Widget *> &);
+               typedef std::map<std::string, Widget *> WidgetMap;
+
+       protected:
+               template<typename T>
+               struct AddChildType
+               {
+                       void operator()(const std::string &, Loader &) const;
+               };
+
+               WidgetMap &wdg_map;
+               Widget *last_widget;
+
+       public:
+               Loader(Panel &, WidgetMap &);
+
        private:
+               Widget &get_last_widget();
+               template<typename T>
+               void arrangement();
                template<typename T>
                void child(const std::string &);
-               void panel(const std::string &);
+               void constraint(Layout::ConstraintType, const std::string &);
+               void expand(bool, bool);
+               void ghost(bool);
+               void gravity(int, int);
+               void grid(std::size_t);
+               void layout();
+               template<typename T>
+               void unnamed_child();
+
+               friend class Panel;
        };
 
 private:
-       typedef std::list<Widget *> ChildSeq;
+       template<typename T>
+       class ArrangedLoader: public DataFile::Loader
+       {
+       private:
+               typename T::Loader arr_loader;
+
+       public:
+               ArrangedLoader(Loader &, T &);
+       };
+
+protected:
+       std::vector<Widget *> nav_order;
+       std::unique_ptr<Layout> layout;
 
-       ChildSeq children;
-       Widget *pointer_focus;
-       unsigned pointer_grab;
-       Widget *input_focus;
+       static TypeRegistry<Loader::AddChildType, Loader &> widget_registry;
+       static bool widget_registry_init_done;
 
-       Panel(const Panel &);
-       Panel &operator=(const Panel &);
 public:
-       Panel(const Resources &);
-       ~Panel();
-
-       void add(Widget &);
-       void remove(Widget &);
-
-       virtual void button_press(int, int, unsigned);
-       virtual void button_release(int, int, unsigned);
-       virtual void pointer_motion(int, int);
-       virtual void pointer_leave();
-       virtual void key_press(unsigned, unsigned, wchar_t);
-       virtual void key_release(unsigned, unsigned);
-       virtual void focus_out();
-       void child_hidden(Widget &);
-private:
-       virtual const char *get_class() const { return "panel"; }
-       virtual void render_special(const Part &) const;
-       void set_pointer_focus(Widget *, int);
-       void set_input_focus(Widget *);
-       Widget *get_child_at(int, int);
+       Panel();
+
+       template<typename T>
+       static void register_child_type(const std::string &);
+
+       const char *get_class() const override { return "panel"; }
+
+       Layout &get_or_create_layout();
+
+protected:
+       void autosize_special(const Part &, Geometry &) const override;
+       void render_special(const Part &, GL::Renderer &) const override;
+
+public:
+       bool navigate(Navigation) override;
+protected:
+       Widget *find_next_child(int, int, int, int, int) const;
+       static int compute_delta(int, int, int, int, int);
+
+       void on_size_change() override;
+       void on_child_added(Widget &) override;
+       void on_child_removed(Widget &) override;
 };
 
+
+template<typename T>
+void Panel::register_child_type(const std::string &name)
+{
+       widget_registry.register_type<T>(name);
+}
+
+
+template<typename T>
+void Panel::Loader::child(const std::string &n)
+{
+       unnamed_child<T>();
+       wdg_map[n] = last_widget;
+}
+
+template<typename T>
+void Panel::Loader::unnamed_child()
+{
+       std::unique_ptr<T> chl = std::make_unique<T>();
+       load_sub(*chl);
+       Widget *wdg = chl.get();
+       obj.add(move(chl));
+       last_widget = wdg;
+}
+
+
+template<typename T>
+void Panel::Loader::AddChildType<T>::operator()(const std::string &kwd, Loader &ldr) const
+{
+       ldr.add(kwd, &Loader::child<T>);
+       ldr.add(kwd, &Loader::unnamed_child<T>);
+}
+
 } // namespace GLtk
 } // namespace Msp