Show symbol names in the statusbar again..

Not very clean but serves its purpose.

liblogdiag/ld-category-symbol-view.c

@@ -92,6 +92,36 @@ ld_category_symbol_view_class_init (LdCategorySymbolViewClass *klass)
 	object_class->set_property = ld_category_symbol_view_set_property;
 	object_class->finalize = ld_category_symbol_view_finalize;
 
+/**
+ * LdCategorySymbolView::symbol-selected:
+ * @self: an #LdCategorySymbolView object.
+ * @symbol: the selected #LdSymbol object.
+ * @path: location of the symbol within the library.
+ *
+ * A symbol has been selected.
+ */
+	klass->symbol_selected_signal = g_signal_new
+		("symbol-selected", G_TYPE_FROM_CLASS (klass),
+		G_SIGNAL_RUN_LAST, 0, NULL, NULL,
+		ld_marshal_VOID__OBJECT_STRING,
+		G_TYPE_NONE, 2, LD_TYPE_SYMBOL,
+		G_TYPE_STRING | G_SIGNAL_TYPE_STATIC_SCOPE);
+
+/**
+ * LdCategorySymbolView::symbol-deselected:
+ * @self: an #LdCategorySymbolView object.
+ * @symbol: the deselected #LdSymbol object.
+ * @path: location of the symbol within the library.
+ *
+ * A symbol has been deselected.
+ */
+	klass->symbol_deselected_signal = g_signal_new
+		("symbol-deselected", G_TYPE_FROM_CLASS (klass),
+		G_SIGNAL_RUN_LAST, 0, NULL, NULL,
+		ld_marshal_VOID__OBJECT_STRING,
+		G_TYPE_NONE, 2, LD_TYPE_SYMBOL,
+		G_TYPE_STRING | G_SIGNAL_TYPE_STATIC_SCOPE);
+
 /**
  * LdCategorySymbolView:category:
  *
@@ -118,10 +148,16 @@ symbol_redraw (LdCategorySymbolView *self, SymbolData *symbol)
 static void
 symbol_deselect (LdCategorySymbolView *self)
 {
-	if (!self->priv->preselected)
+	SymbolData *preselected;
+
+	preselected = self->priv->preselected;
+	if (!preselected)
 		return;
 
-	symbol_redraw (self, self->priv->preselected);
+	g_signal_emit (self, LD_CATEGORY_SYMBOL_VIEW_GET_CLASS (self)->
+		symbol_deselected_signal, 0, preselected->symbol, preselected->path);
+
+	symbol_redraw (self, preselected);
 	self->priv->preselected = NULL;
 	gtk_drag_source_unset (GTK_WIDGET (self));
 }
@@ -164,6 +200,9 @@ on_motion_notify (GtkWidget *widget, GdkEventMotion *event, gpointer user_data)
 
 			gtk_drag_source_set (widget,
 				GDK_BUTTON1_MASK, &target, 1, GDK_ACTION_COPY);
+
+			g_signal_emit (self, LD_CATEGORY_SYMBOL_VIEW_GET_CLASS (self)->
+				symbol_selected_signal, 0, data->symbol, data->path);
 		}
 		return FALSE;
 	}
@@ -253,6 +292,8 @@ symbol_data_free (SymbolData *self)
 static void
 layout_destroy (LdCategorySymbolView *self)
 {
+	symbol_deselect (self);
+
 	g_slist_foreach (self->priv->layout, (GFunc) symbol_data_free, NULL);
 	g_slist_free (self->priv->layout);
 	self->priv->layout = NULL;

liblogdiag/ld-category-symbol-view.h

@@ -45,6 +45,9 @@ struct _LdCategorySymbolViewClass
 {
 /*< private >*/
 	GtkDrawingAreaClass parent_class;
+
+	guint symbol_selected_signal;
+	guint symbol_deselected_signal;
 };
 
 

liblogdiag/ld-category-view.c

@@ -61,6 +61,36 @@ ld_category_view_class_init (LdCategoryViewClass *klass)
 	object_class->set_property = ld_category_view_set_property;
 	object_class->dispose = ld_category_view_dispose;
 
+/**
+ * LdCategoryView::symbol-selected:
+ * @self: an #LdCategoryView object.
+ * @symbol: the selected #LdSymbol object.
+ * @path: location of the symbol within the library.
+ *
+ * A symbol has been selected.
+ */
+	klass->symbol_selected_signal = g_signal_new
+		("symbol-selected", G_TYPE_FROM_CLASS (klass),
+		G_SIGNAL_RUN_LAST, 0, NULL, NULL,
+		ld_marshal_VOID__OBJECT_STRING,
+		G_TYPE_NONE, 2, LD_TYPE_SYMBOL,
+		G_TYPE_STRING | G_SIGNAL_TYPE_STATIC_SCOPE);
+
+/**
+ * LdCategoryView::symbol-deselected:
+ * @self: an #LdCategoryView object.
+ * @symbol: the deselected #LdSymbol object.
+ * @path: location of the symbol within the library.
+ *
+ * A symbol has been deselected.
+ */
+	klass->symbol_deselected_signal = g_signal_new
+		("symbol-deselected", G_TYPE_FROM_CLASS (klass),
+		G_SIGNAL_RUN_LAST, 0, NULL, NULL,
+		ld_marshal_VOID__OBJECT_STRING,
+		G_TYPE_NONE, 2, LD_TYPE_SYMBOL,
+		G_TYPE_STRING | G_SIGNAL_TYPE_STATIC_SCOPE);
+
 /**
  * LdCategoryView:category:
  *
@@ -257,6 +287,22 @@ reconstruct_prefix (LdCategoryView *self)
 	g_free (end);
 }
 
+static void
+on_symbol_selected (GObject *source,
+	LdSymbol *symbol, const gchar *path, LdCategoryView *self)
+{
+	g_signal_emit (self, LD_CATEGORY_VIEW_GET_CLASS (self)->
+		symbol_selected_signal, 0, symbol, path);
+}
+
+static void
+on_symbol_deselected (GObject *source,
+	LdSymbol *symbol, const gchar *path, LdCategoryView *self)
+{
+	g_signal_emit (self, LD_CATEGORY_VIEW_GET_CLASS (self)->
+		symbol_deselected_signal, 0, symbol, path);
+}
+
 static void
 reload_category (LdCategoryView *self)
 {
@@ -266,6 +312,8 @@ reload_category (LdCategoryView *self)
 	gtk_container_foreach (GTK_CONTAINER (self),
 		(GtkCallback) gtk_widget_destroy, NULL);
 
+	/* XXX: We might want to disconnect signal handlers. */
+
 	if (self->priv->category)
 	{
 		GSList *symbols, *children;
@@ -279,6 +327,11 @@ reload_category (LdCategoryView *self)
 
 			symbol_view = ld_category_symbol_view_new (self->priv->category);
 			gtk_box_pack_start (GTK_BOX (self), symbol_view, FALSE, FALSE, 0);
+
+			g_signal_connect_after (symbol_view, "symbol-selected",
+				G_CALLBACK (on_symbol_selected), self);
+			g_signal_connect_after (symbol_view, "symbol-deselected",
+				G_CALLBACK (on_symbol_deselected), self);
 		}
 
 		if (children)
@@ -318,5 +371,10 @@ load_category_cb (gpointer data, gpointer user_data)
 	child = ld_category_view_new (cat);
 	gtk_container_add (GTK_CONTAINER (expander), child);
 	gtk_box_pack_start (GTK_BOX (self), expander, FALSE, FALSE, 0);
+
+	g_signal_connect_after (child, "symbol-selected",
+		G_CALLBACK (on_symbol_selected), self);
+	g_signal_connect_after (child, "symbol-deselected",
+		G_CALLBACK (on_symbol_deselected), self);
 }
 

liblogdiag/ld-category-view.h

@@ -45,6 +45,9 @@ struct _LdCategoryViewClass
 {
 /*< private >*/
 	GtkVBoxClass parent_class;
+
+	guint symbol_selected_signal;
+	guint symbol_deselected_signal;
 };
 
 

src/ld-window-main.c

@@ -90,6 +90,11 @@ static gboolean may_close_diagram (LdWindowMain *self,
 	const gchar *dialog_message);
 static gboolean may_quit (LdWindowMain *self);
 
+static void on_symbol_selected (LdCategoryView *view,
+	LdSymbol *symbol, const gchar *path, LdWindowMain *self);
+static void on_symbol_deselected (LdCategoryView *view,
+	LdSymbol *symbol, const gchar *path, LdWindowMain *self);
+
 static void on_action_new (GtkAction *action, LdWindowMain *self);
 static void on_action_open (GtkAction *action, LdWindowMain *self);
 static void on_action_save (GtkAction *action, LdWindowMain *self);
@@ -341,6 +346,11 @@ ld_window_main_init (LdWindowMain *self)
 	ld_category_view_set_category (LD_CATEGORY_VIEW (priv->library_view),
 		ld_library_get_root (priv->library));
 
+	g_signal_connect_after (priv->library_view, "symbol-selected",
+		G_CALLBACK (on_symbol_selected), self);
+	g_signal_connect_after (priv->library_view, "symbol-deselected",
+		G_CALLBACK (on_symbol_deselected), self);
+
 	diagram_set_filename (self, NULL);
 
 	priv->statusbar_hint_drag = gtk_statusbar_push
@@ -841,6 +851,25 @@ may_quit (LdWindowMain *self)
 
 /* ===== User interface actions ============================================ */
 
+static void
+on_symbol_selected (LdCategoryView *view,
+	LdSymbol *symbol, const gchar *path, LdWindowMain *self)
+{
+	const gchar *symbol_name;
+
+	symbol_name = ld_symbol_get_human_name (symbol);
+	gtk_statusbar_push (GTK_STATUSBAR (self->priv->statusbar),
+		self->priv->statusbar_menu_context_id, symbol_name);
+}
+
+static void
+on_symbol_deselected (LdCategoryView *view,
+	LdSymbol *symbol, const gchar *path, LdWindowMain *self)
+{
+	gtk_statusbar_pop (GTK_STATUSBAR (self->priv->statusbar),
+		self->priv->statusbar_menu_context_id);
+}
+
 static void
 on_view_zoom_changed (LdDiagramView *view, GParamSpec *pspec,
 	LdWindowMain *self)