X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Flist.h;h=6f6aec1f9dcf50d2dd5b5ead0fb66db4790b5d72;hb=707b59d45ae50b69c94918f8f74313283b304597;hp=56fe6aafd92ee5d2fd033eab45c045c2c724ebe4;hpb=2b70e8801c43875ed3f4135bdd0141265cff0312;p=libs%2Fgltk.git

diff --git a/source/list.h b/source/list.h
index 56fe6aa..6f6aec1 100644
--- a/source/list.h
+++ b/source/list.h
@@ -1,13 +1,28 @@
 #ifndef MSP_GLTK_LIST_H_
 #define MSP_GLTK_LIST_H_
 
+#include <stdexcept>
+#include <typeinfo>
 #include <sigc++/signal.h>
 #include "container.h"
+#include "label.h"
+#include "listdata.h"
 #include "vslider.h"
 
 namespace Msp {
 namespace GLtk {
 
+/**
+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.
@@ -15,7 +30,7 @@ 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 &);
@@ -23,40 +38,142 @@ public:
 		void item(const std::string &);
 	};
 
-	sigc::signal<void, unsigned, const std::string &> signal_item_selected;
+private:
+	/// 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;
+	};
 
 private:
-	std::vector<std::string> items;
+	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;
+
+private:
+	ListData *data;
+	bool own_data;
+	DataObserver *observer;
+	ItemFactory *item_factory;
 	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();
+	List(ListData &);
+private:
+	void init();
+public:
+	virtual ~List();
 
 	virtual const char *get_class() const { return "list"; }
 
-	virtual void autosize();
-	void autosize_rows(unsigned);
-	void autosize_all();
+private:
+	virtual void autosize_special(const Part &, Geometry &) const;
+
+public:
+	void set_data(ListData &);
+	ListData &get_data() { return *data; }
+	const ListData &get_data() const { return *data; }
+private:
+	void items_changed();
 
-	void append(const std::string &);
-	void insert(unsigned, const std::string &);
-	void remove(unsigned);
-	void clear();
-	unsigned get_n_items() const { return items.size(); }
+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);
+
+public:
+	void set_view_size(unsigned);
+	void set_view_all();
 
 	void set_selected_index(int);
-	const std::string &get_selected() const;
 	int get_selected_index() const { return sel_index; }
 
 private:
-	virtual void render_special(const Part &) const;
+	virtual void render_special(const Part &, GL::Renderer &) const;
 
 public:
 	virtual void button_press(int, int, unsigned);
@@ -65,6 +182,8 @@ private:
 	virtual void on_style_change();
 
 	void reposition_slider();
+	void item_autosize_changed(Item *);
+	void reposition_items();
 	void check_view_range();
 	void slider_value_changed(double);
 };