Redesign the library and related components.

This step is needed, since the current design is quite chaotic
and it would not be possible to finish the application.

There's still a lot to be done.

After this step, it's time to implement the rest of LdLua.

10 files changed, 139 insertions, 85 deletions

diff --git a/src/ld-library.c b/src/ld-library.c
index ba12d5d..d4eec09 100644
--- a/src/ld-library.c
+++ b/src/ld-library.c
@@ -12,9 +12,10 @@
 
 #include "config.h"
 
-#include "ld-library.h"
-#include "ld-symbol-category.h"
 #include "ld-symbol.h"
+#include "ld-symbol-category.h"
+#include "ld-library.h"
+
 #include "ld-lua.h"
 
 
@@ -132,9 +133,10 @@ load_category (LdLibrary *self, const char *path, const char *name)
 	/* TODO: Search for category.json and read the category name from it. */
 	/* TODO: Search for xyz.lua and load the objects into the category. */
 
-	cat = ld_symbol_category_new (self);
-	cat->name = g_strdup (name);
-	cat->image_path = icon_file;
+	cat = ld_symbol_category_new (name);
+	ld_symbol_category_set_image_path (cat, icon_file);
+
+	g_free (icon_file);
 	return cat;
 }
 
@@ -167,7 +169,8 @@ ld_library_load (LdLibrary *self, const char *path)
 		categ_path = g_build_filename (path, item, NULL);
 		cat = load_category (self, categ_path, item);
 		if (cat)
-			g_hash_table_insert (self->categories, cat->name, cat);
+			g_hash_table_insert (self->categories,
+				g_strdup (ld_symbol_category_get_name (cat)), cat);
 		g_free (categ_path);
 
 		changed = TRUE;
diff --git a/src/ld-library.h b/src/ld-library.h
index 3dd052f..76a76a5 100644
--- a/src/ld-library.h
+++ b/src/ld-library.h
@@ -59,8 +59,7 @@ struct _LdLibraryClass
 GType ld_library_get_type (void) G_GNUC_CONST;
 
 LdLibrary *ld_library_new (void);
-gboolean ld_library_load (LdLibrary *self,
-	const gchar *directory);
+gboolean ld_library_load (LdLibrary *self, const gchar *directory);
 void ld_library_clear (LdLibrary *self);
 
 
diff --git a/src/ld-lua-symbol.c b/src/ld-lua-symbol.c
index b3e13af..63a1665 100644
--- a/src/ld-lua-symbol.c
+++ b/src/ld-lua-symbol.c
@@ -12,9 +12,10 @@
 
 #include "config.h"
 
-#include "ld-library.h"
 #include "ld-symbol.h"
 #include "ld-symbol-category.h"
+#include "ld-library.h"
+
 #include "ld-lua.h"
 #include "ld-lua-symbol.h"
 
@@ -35,6 +36,10 @@
 struct _LdLuaSymbolPrivate
 {
 	LdLua *lua;
+	/* XXX: Note that this identifier != symbol name,
+	 *      since there can be more symbols with the same name,
+	 *      only in different categories.
+	 */
 	gchar *ident;
 };
 
@@ -88,15 +93,18 @@ ld_lua_symbol_finalize (GObject *gobject)
  * Load a symbol from a file into the library.
  */
 LdSymbol *
-ld_lua_symbol_new (LdLua *lua, const gchar *ident)
+ld_lua_symbol_new (const gchar *name, LdLua *lua, const gchar *ident)
 {
 	LdLuaSymbol *self;
 
+	g_return_val_if_fail (name != NULL, NULL);
 	g_return_val_if_fail (LD_IS_LUA (lua), NULL);
 	g_return_val_if_fail (ident != NULL, NULL);
 
 	self = g_object_new (LD_TYPE_LUA_SYMBOL, NULL);
 
+	/* TODO: Set the symbol name. */
+
 	self->priv->lua = lua;
 	g_object_ref (lua);
 
diff --git a/src/ld-lua-symbol.h b/src/ld-lua-symbol.h
index 9e5af9b..c8b6f35 100644
--- a/src/ld-lua-symbol.h
+++ b/src/ld-lua-symbol.h
@@ -53,7 +53,7 @@ struct _LdLuaSymbolClass
 
 GType ld_lua_symbol_get_type (void) G_GNUC_CONST;
 
-LdSymbol *ld_lua_symbol_new (LdLua *lua, const gchar *ident);
+LdSymbol *ld_lua_symbol_new (const gchar *name, LdLua *lua, const gchar *ident);
 
 
 G_END_DECLS
diff --git a/src/ld-lua.c b/src/ld-lua.c
index 5e4da89..c95a46e 100644
--- a/src/ld-lua.c
+++ b/src/ld-lua.c
@@ -15,9 +15,10 @@
 
 #include "config.h"
 
-#include "ld-library.h"
-#include "ld-symbol-category.h"
 #include "ld-symbol.h"
+#include "ld-symbol-category.h"
+#include "ld-library.h"
+
 #include "ld-lua.h"
 
 
diff --git a/src/ld-symbol-category.c b/src/ld-symbol-category.c
index 96e6bd1..15c1351 100644
--- a/src/ld-symbol-category.c
+++ b/src/ld-symbol-category.c
@@ -12,9 +12,9 @@
 
 #include "config.h"
 
-#include "ld-library.h"
-#include "ld-symbol-category.h"
 #include "ld-symbol.h"
+#include "ld-symbol-category.h"
+#include "ld-library.h"
 
 
 /**
@@ -25,6 +25,19 @@
  * #LdSymbolCategory represents a category of #LdSymbol objects.
  */
 
+/*
+ * LdSymbolCategoryPrivate:
+ * @name: The name of this category.
+ * @image_path: Path to the image for this category.
+ * @children: Children of this category.
+ */
+struct _LdSymbolCategoryPrivate
+{
+	gchar *name;
+	gchar *image_path;
+	GSList *children;
+};
+
 G_DEFINE_TYPE (LdSymbolCategory, ld_symbol_category, G_TYPE_OBJECT);
 
 static void
@@ -38,16 +51,15 @@ ld_symbol_category_class_init (LdSymbolCategoryClass *klass)
 
 	object_class = G_OBJECT_CLASS (klass);
 	object_class->finalize = ld_symbol_category_finalize;
+
+	g_type_class_add_private (klass, sizeof (LdSymbolCategoryPrivate));
 }
 
 static void
 ld_symbol_category_init (LdSymbolCategory *self)
 {
-	/* TODO: use _new_full, correct equal and specify destroy functions. */
-	/* XXX: How's the situation with subcategory names and symbol names
-	 *      within the same hashtable?
-	 */
-	self->children = g_hash_table_new (g_str_hash, g_str_equal);
+	self->priv = G_TYPE_INSTANCE_GET_PRIVATE
+		(self, LD_TYPE_SYMBOL_CATEGORY, LdSymbolCategoryPrivate);
 }
 
 static void
@@ -57,13 +69,10 @@ ld_symbol_category_finalize (GObject *gobject)
 
 	self = LD_SYMBOL_CATEGORY (gobject);
 
-	if (self->name)
-		g_free (self->name);
-	if (self->image_path)
-		g_free (self->image_path);
-
-	g_object_unref (self->parent);
-	g_hash_table_destroy (self->children);
+	if (self->priv->name)
+		g_free (self->priv->name);
+	if (self->priv->image_path)
+		g_free (self->priv->image_path);
 
 	/* Chain up to the parent class. */
 	G_OBJECT_CLASS (ld_symbol_category_parent_class)->finalize (gobject);
@@ -76,15 +85,71 @@ ld_symbol_category_finalize (GObject *gobject)
  * Create an instance.
  */
 LdSymbolCategory *
-ld_symbol_category_new (LdLibrary *parent)
+ld_symbol_category_new (const gchar *name)
 {
 	LdSymbolCategory *cat;
 
 	cat = g_object_new (LD_TYPE_SYMBOL_CATEGORY, NULL);
-
-	cat->parent = parent;
-	g_object_ref (parent);
+	cat->priv->name = g_strdup (name);
 
 	return cat;
 }
 
+/**
+ * ld_symbol_category_set_name:
+ * @self: An #LdSymbolCategory object.
+ * @name: The new name for this category.
+ */
+void
+ld_symbol_category_set_name (LdSymbolCategory *self, const gchar *name)
+{
+	g_return_if_fail (LD_IS_SYMBOL_CATEGORY (self));
+	g_return_if_fail (name != NULL);
+
+	if (self->priv->name)
+		g_free (self->priv->name);
+	self->priv->name = g_strdup (name);
+}
+
+/**
+ * ld_symbol_category_get_name:
+ * @self: An #LdSymbolCategory object.
+ *
+ * Return the name of this category.
+ */
+const gchar *
+ld_symbol_category_get_name (LdSymbolCategory *self)
+{
+	g_return_val_if_fail (LD_IS_SYMBOL_CATEGORY (self), NULL);
+	return self->priv->name;
+}
+
+/**
+ * ld_symbol_category_set_image_path:
+ * @self: An #LdSymbolCategory object.
+ * @image_path: The new path to the image for this category. May be NULL.
+ */
+void
+ld_symbol_category_set_image_path (LdSymbolCategory *self,
+	const gchar *image_path)
+{
+	g_return_if_fail (LD_IS_SYMBOL_CATEGORY (self));
+
+	if (self->priv->image_path)
+		g_free (self->priv->image_path);
+	self->priv->image_path = g_strdup (image_path);
+}
+
+/**
+ * ld_symbol_category_get_image_path:
+ * @self: An #LdSymbolCategory object.
+ *
+ * Return the filesystem path to the image for this category. May be NULL.
+ */
+const gchar *
+ld_symbol_category_get_image_path (LdSymbolCategory *self)
+{
+	g_return_val_if_fail (LD_IS_SYMBOL_CATEGORY (self), NULL);
+	return self->priv->image_path;
+}
+
diff --git a/src/ld-symbol-category.h b/src/ld-symbol-category.h
index 42ad8ac..21286c9 100644
--- a/src/ld-symbol-category.h
+++ b/src/ld-symbol-category.h
@@ -27,33 +27,24 @@ G_BEGIN_DECLS
 	((obj), LD_SYMBOL_CATEGORY, LdSymbolCategoryClass))
 
 typedef struct _LdSymbolCategory LdSymbolCategory;
+typedef struct _LdSymbolCategoryPrivate LdSymbolCategoryPrivate;
 typedef struct _LdSymbolCategoryClass LdSymbolCategoryClass;
 
 
 /**
  * LdSymbolCategory:
- * @parent: The parent object, may be #LdLibrary
- * or another #LdSymbolCategory.
- * @name: The name of the category.
- * @image_path: Path to the image for this category.
- * @children: Children of this category.
- */
-/* TODO: Make the public fields private and set them as properties
- *       + implement setters and getters. On change the category
- *       shall emit a "changed" signal in the Library.
  */
 struct _LdSymbolCategory
 {
 /*< private >*/
 	GObject parent_instance;
-
-/*< public >*/
-	gpointer parent;
-	gchar *name;
-	gchar *image_path;
-	GHashTable *children;
+	LdSymbolCategoryPrivate *priv;
 };
 
+/* TODO: If required sometime, categories (and maybe symbols) should implement
+ *       a "changed" signal. This can be somewhat tricky. The library might be
+ *       a good candidate for what they call a proxy. See GtkUIManager.
+ */
 struct _LdSymbolCategoryClass
 {
 	GObjectClass parent_class;
@@ -62,13 +53,20 @@ struct _LdSymbolCategoryClass
 
 GType ld_symbol_category_get_type (void) G_GNUC_CONST;
 
-LdSymbolCategory *
-ld_symbol_category_new (LdLibrary *parent);
-
-/* TODO: Methods for inserting and removing children. */
-/* TODO: Create a separate ld-symbol-private.h, include it in this ld-s-c.c
- *       and then assign and ref the parent category here.
- */
+LdSymbolCategory *ld_symbol_category_new (const gchar *name);
+
+/* TODO: Create properties for "name" and "image_path". */
+void ld_symbol_category_set_name (LdSymbolCategory *self, const gchar *name);
+const gchar *ld_symbol_category_get_name (LdSymbolCategory *self);
+void ld_symbol_category_set_image_path (LdSymbolCategory *self,
+	const gchar *image_path);
+const gchar *ld_symbol_category_get_image_path (LdSymbolCategory *self);
+/* TODO: Implement. */
+void ld_symbol_category_insert_child (LdSymbolCategory *self,
+	GObject *child, gint pos);
+void ld_symbol_category_remove_child (LdSymbolCategory *self,
+	GObject *child);
+GSList *ld_symbol_category_get_children (LdSymbolCategory *self);
 
 
 G_END_DECLS
diff --git a/src/ld-symbol.c b/src/ld-symbol.c
index 9dc4394..0c79d23 100644
--- a/src/ld-symbol.c
+++ b/src/ld-symbol.c
@@ -12,9 +12,9 @@
 
 #include "config.h"
 
-#include "ld-library.h"
-#include "ld-symbol-category.h"
 #include "ld-symbol.h"
+#include "ld-symbol-category.h"
+#include "ld-library.h"
 
 
 /**
@@ -28,12 +28,11 @@
 
 /*
  * LdSymbolPrivate:
- * @parent: The parent LdSymbolCategory. It is used to identify
- * the object within it's library.
+ * @name: The name of this symbol.
  */
 struct _LdSymbolPrivate
 {
-	LdSymbolCategory *parent;
+	gchar *name;
 };
 
 G_DEFINE_ABSTRACT_TYPE (LdSymbol, ld_symbol, G_TYPE_OBJECT);
@@ -65,27 +64,12 @@ ld_symbol_finalize (GObject *gobject)
 	LdSymbol *self;
 
 	self = LD_SYMBOL (gobject);
-	g_object_unref (self->priv->parent);
 
 	/* Chain up to the parent class. */
 	G_OBJECT_CLASS (ld_symbol_parent_class)->finalize (gobject);
 }
 
 /**
- * ld_symbol_build_identifier:
- * @self: A symbol object.
- *
- * Build an identifier for the symbol.
- * The identifier is in the format "Category/Category/Symbol".
- */
-gchar *
-ld_symbol_build_identifier (LdSymbol *self)
-{
-	/* TODO: Implement. */
-	return NULL;
-}
-
-/**
  * ld_symbol_draw:
  * @self: A symbol object.
  * @cr: A cairo surface to be drawn on.
diff --git a/src/ld-symbol.h b/src/ld-symbol.h
index 8ead147..7e8a00e 100644
--- a/src/ld-symbol.h
+++ b/src/ld-symbol.h
@@ -40,9 +40,6 @@ struct _LdSymbol
 /*< private >*/
 	GObject parent_instance;
 	LdSymbolPrivate *priv;
-
-/*< public >*/
-	gchar *name;
 };
 
 /**
@@ -60,13 +57,10 @@ struct _LdSymbolClass
 
 GType ld_symbol_get_type (void) G_GNUC_CONST;
 
-gchar *ld_symbol_build_identifier (LdSymbol *self);
-
 void ld_symbol_draw (LdSymbol *self, cairo_t *cr);
 
-/* TODO: An interface for symbol terminals etc. */
-/* TODO: Store a pointer to the parent, probably as a property,
- *       using g_object_add_weak_pointer/remove_weak_pointer.
+/* TODO: Interface for symbol terminals
+ *       Interface + property for symbol name (will be used by _new)
  */
 
 
diff --git a/src/ld-window-main.c b/src/ld-window-main.c
index d37488f..236e118 100644
--- a/src/ld-window-main.c
+++ b/src/ld-window-main.c
@@ -13,11 +13,13 @@
 #include "config.h"
 
 #include "ld-window-main.h"
+
+#include "ld-symbol.h"
+#include "ld-symbol-category.h"
+#include "ld-library.h"
+
 #include "ld-document.h"
 #include "ld-canvas.h"
-#include "ld-library.h"
-#include "ld-symbol-category.h"
-#include "ld-symbol.h"
 
 
 /**
@@ -286,7 +288,7 @@ cb_load_category (gpointer key, gpointer value, gpointer user_data)
 	g_return_if_fail (LD_IS_SYMBOL_CATEGORY (cat));
 
 	pbuf = gdk_pixbuf_new_from_file_at_size
-		(cat->image_path, TOOLBAR_ICON_WIDTH, -1, NULL);
+		(ld_symbol_category_get_image_path (cat), TOOLBAR_ICON_WIDTH, -1, NULL);
 	g_return_if_fail (pbuf != NULL);
 
 	img = gtk_image_new_from_pixbuf (pbuf);