Add a persistent view size attribute to List

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

diff --git a/source/list.h b/source/list.h
index 1ecd854c26e048ddd9a10ba6178d2752e5f2b494..dd44f3b57738e9bd2dbf19cfc87592d0d9bf6b67 100644 (file)
--- a/source/list.h
+++ b/source/list.h
@@ -3,6 +3,7 @@
 
 #include <sigc++/signal.h>
 #include "container.h"
+#include "label.h"
 #include "listdata.h"
 #include "vslider.h"
 
@@ -16,7 +17,7 @@ to allow scrolling through a long list.
 class List: virtual public Widget, private Container
 {
 public:
-       class Loader: public Widget::Loader
+       class Loader: public DataFile::DerivedObjectLoader<List, Widget::Loader>
        {
        public:
                Loader(List &);
@@ -40,6 +41,31 @@ private:
                void refresh_strings();
        };
 
+protected:
+       class Item: public Container
+       {
+       public:
+               virtual const char *get_class() const { return "listitem"; }
+
+               virtual void autosize();
+               void set_active(bool);
+
+               virtual void render_special(const Part &, GL::Renderer &) const;
+       };
+
+public:
+       class BasicItem: public Item
+       {
+       private:
+               Label label;
+
+       public:
+               BasicItem(const std::string &);
+
+       private:
+               virtual void on_style_change();
+       };
+
 public:
        sigc::signal<void, unsigned> signal_item_selected;
 
@@ -49,12 +75,11 @@ private:
        DataObserver *observer;
        int sel_index;
        unsigned first;
-       unsigned n_visible;
-       unsigned row_height;
-
-       const Part *items_part;
+       unsigned max_scroll;
+       unsigned view_size;
 
        VSlider slider;
+       std::vector<Item *> items;
 
 public:
        List();
@@ -67,21 +92,23 @@ public:
        virtual const char *get_class() const { return "list"; }
 
        virtual void autosize();
-       void autosize_rows(unsigned);
-       void autosize_all();
 
        void set_data(ListData &);
        ListData &get_data() { return *data; }
        const ListData &get_data() const { return *data; }
 private:
        void items_changed();
+protected:
+       virtual Item *create_item(unsigned);
+
 public:
+       void set_view_size(unsigned);
+       void set_view_all();
 
        void set_selected_index(int);
        int get_selected_index() const { return sel_index; }
 
 private:
-       virtual void rebuild_special(const Part &, CachedPart &);
        virtual void render_special(const Part &, GL::Renderer &) const;
 
 public:
@@ -91,6 +118,7 @@ private:
        virtual void on_style_change();
 
        void reposition_slider();
+       void reposition_items();
        void check_view_range();
        void slider_value_changed(double);
 };