X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Flist.h;h=5a95b085ae64c9d22837fea608d65af988135578;hb=6762feb95d685b556ae97a9cd1ce964d2b2ee5fe;hp=77d7e9f49166ac53e62c5a06785e0e14bd12ed28;hpb=95210598ff214bbc8d05657aeffc4ce7801f211a;p=libs%2Fgltk.git

diff --git a/source/list.h b/source/list.h
index 77d7e9f..5a95b08 100644
--- a/source/list.h
+++ b/source/list.h
@@ -1,29 +1,36 @@
-/* $Id$
-
-This file is part of libmspgltk
-Copyright © 2007  Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
 #ifndef MSP_GLTK_LIST_H_
 #define MSP_GLTK_LIST_H_
 
+#include <stdexcept>
+#include <typeinfo>
 #include <sigc++/signal.h>
-#include "widget.h"
+#include "container.h"
+#include "label.h"
+#include "listdata.h"
+#include "vslider.h"
 
 namespace Msp {
 namespace GLtk {
 
-class VSlider;
+/**
+Thrown if a list's item type is incompatible with its data.
+*/
+class incompatible_data: public std::logic_error
+{
+public:
+	incompatible_data(const std::type_info &);
+	virtual ~incompatible_data() throw() { }
+};
+
 
 /**
 Shows a list of items, allowing the user to select one.  A slider is included
 to allow scrolling through a long list.
 */
-class List: public Widget
+class List: virtual public Widget, private Container
 {
 public:
-	class Loader: public Widget::Loader
+	class Loader: public DataFile::DerivedObjectLoader<List, Widget::Loader>
 	{
 	public:
 		Loader(List &);
@@ -32,43 +39,169 @@ public:
 	};
 
 private:
-	std::vector<std::string> items;
+	/// This exists to make disconnecting signals easier
+	class DataObserver: public sigc::trackable
+	{
+	private:
+		List &list;
+
+	public:
+		DataObserver(List &);
+
+		void item_added(unsigned);
+		void item_removed(unsigned);
+		void cleared();
+		void refresh_item(unsigned);
+	};
+
+public:
+	class Item: public Container
+	{
+	public:
+		virtual const char *get_class() const { return "listitem"; }
+
+	protected:
+		virtual void autosize_special(const Part &, Geometry &) const;
+	public:
+		void set_active(bool);
+
+		virtual void render_special(const Part &, GL::Renderer &) const;
+	};
+
+	class MultiColumnItem: public Item
+	{
+	protected:
+		virtual void check_widths(std::vector<unsigned> &) const;
+		virtual void set_widths(const std::vector<unsigned> &);
+
+	private:
+		virtual void on_style_change();
+	};
+
+private:
+	class BasicItem: public Item
+	{
+	private:
+		Label label;
+
+	public:
+		BasicItem(const std::string &);
+
+	private:
+		virtual void on_style_change();
+	};
+
+	class ItemFactory
+	{
+	protected:
+		ItemFactory() { }
+	public:
+		virtual ~ItemFactory() { }
+
+		virtual void set_data(const ListData &) = 0;
+		virtual Item *create_item(unsigned) const = 0;
+	};
+
+	template<typename I>
+	class TypedItemFactory: public ItemFactory
+	{
+	private:
+		typedef typename I::ValueType ValueType;
+
+		const ListDataStore<ValueType> *data;
+
+	public:
+		TypedItemFactory(const ListData &d)
+		{ set_data(d); }
+
+		virtual void set_data(const ListData &d)
+		{
+			if(const ListDataStore<ValueType> *ds = dynamic_cast<const ListDataStore<ValueType> *>(&d))
+				data = ds;
+			else
+				throw incompatible_data(typeid(ValueType));
+		}
+
+		virtual Item *create_item(unsigned i) const
+		{
+			return new I(data->get(i));
+		}
+	};
+
+public:
+	sigc::signal<void, unsigned> signal_item_selected;
+	sigc::signal<void> signal_selection_cleared;
+
+private:
+	ListData *data;
+	bool own_data;
+	DataObserver *observer;
+	ItemFactory *item_factory;
 	int sel_index;
+	int focus_index;
 	unsigned first;
-	unsigned n_visible;
+	unsigned max_scroll;
+	unsigned view_size;
+	bool ignore_slider_change;
 
-	const Part *items_part;
+	VSlider slider;
+	std::vector<Item *> items;
 
-	VSlider *slider;
-	bool slider_active;
+public:
+	List();
+	List(ListData &);
+private:
+	void init();
+public:
+	virtual ~List();
+
+	virtual const char *get_class() const { return "list"; }
+
+private:
+	virtual void autosize_special(const Part &, Geometry &) const;
 
 public:
-	sigc::signal<void, unsigned, const std::string &> signal_item_selected;
+	void set_data(ListData &);
+	ListData &get_data() { return *data; }
+	const ListData &get_data() const { return *data; }
+private:
+	void items_changed();
 
-	List(const Resources &);
-	~List();
+public:
+	template<typename I>
+	void set_item_type()
+	{
+		ItemFactory *f = new TypedItemFactory<I>(*data);
+		delete item_factory;
+		item_factory = f;
+	}
+private:
+	Item *create_item(unsigned);
 
-	void append(const std::string &);
-	void insert(unsigned, const std::string &);
-	void remove(unsigned);
-	void clear();
+public:
+	void set_view_size(unsigned);
+	void set_view_all();
 
-	const std::string &get_selected() const;
+	void set_selected_index(int);
 	int get_selected_index() const { return sel_index; }
 
-	virtual void button_press(int, int, unsigned);
-	virtual void button_release(int, int, unsigned);
-	virtual void pointer_motion(int, int);
+private:
+	virtual void rebuild_special(const Part &);
+	virtual void render_special(const Part &, GL::Renderer &) const;
 
+public:
+	virtual void button_press(int, int, unsigned);
+	virtual void focus_in();
+	virtual bool navigate(Navigation);
 private:
-	virtual const char *get_class() const { return "list"; }
-	virtual void render_special(const Part &) const;
+	void set_focus_index(int);
 
-	virtual void on_geometry_change();
-	virtual void on_style_change();
-	void reposition_slider();
-	void recalculate_parameters();
+	void item_autosize_changed(Item *);
+	unsigned last_to_first(unsigned) const;
+	void check_view_range();
+	void scroll_to_focus();
 	void slider_value_changed(double);
+	static void adjust_index(int &, int, int);
 };
 
 } // namespace GLtk