widgets: generic set/get for list

Signed-off-by: Julien Danjou <julien@danjou.info>

common/tokenize.gperf

@@ -70,7 +70,6 @@ true
 urgent
 visible
 vertical
-widgets
 width
 workarea
 yes

lib/awful.lua.in

@@ -1419,7 +1419,7 @@ end
 -- @param c The client to update.
 function titlebar.update(c)
     if c.titlebar and titlebar.data[c] then
-        local widgets = c.titlebar.widgets
+        local widgets = c.titlebar:widgets()
         local title, close
         for k, v in ipairs(widgets) do
             if v.name == "title" then title = v end

statusbar.c

@@ -541,49 +541,14 @@ static int
 luaA_statusbar_widgets(lua_State *L)
 {
     statusbar_t **statusbar = luaA_checkudata(L, 1, "statusbar");
-    widget_node_t *witer;
 
     if(lua_gettop(L) == 2)
     {
-        luaA_checktable(L, 2);
-
-        /* remove all widgets */
-        for(witer = (*statusbar)->widgets; witer; witer = (*statusbar)->widgets)
-        {
-            if(witer->widget->detach)
-                witer->widget->detach(witer->widget, *statusbar);
-            widget_unref(&witer->widget);
-            widget_node_list_detach(&(*statusbar)->widgets, witer);
-            p_delete(&witer);
-        }
-
+        luaA_widget_set(L, 2, *statusbar, &(*statusbar)->widgets);
         (*statusbar)->need_update = true;
-
-        /* now read all widgets and add them */
-        lua_pushnil(L);
-        while(lua_next(L, 2))
-        {
-            widget_t **widget = luaA_checkudata(L, -1, "widget");
-            widget_node_t *w = p_new(widget_node_t, 1);
-            w->widget = *widget;
-            widget_node_list_append(&(*statusbar)->widgets, w);
-            widget_ref(widget);
-            lua_pop(L, 1);
-        }
-        lua_pop(L, 1);
+        return 1;
     }
-    else
-    {
-        int i = 0;
-        lua_newtable(L);
-        for(witer = (*statusbar)->widgets; witer; witer = witer->next)
-        {
-            luaA_widget_userdata_new(L, witer->widget);
-            lua_rawseti(L, -2, ++i);
-        }
-    }
-
-    return 1;
+    return luaA_widget_get(L, (*statusbar)->widgets);
 }
 
 /** Remove a statubar from a screen.

titlebar.c

@@ -372,7 +372,6 @@ luaA_titlebar_newindex(lua_State *L)
     const char *buf, *attr = luaL_checklstring(L, 2, &len);
     client_t *c = NULL, **newc;
     int i;
-    widget_node_t *witer;
     position_t position;
 
     switch(a_tokenize(attr, len))
@@ -449,33 +448,6 @@ luaA_titlebar_newindex(lua_State *L)
                                                        globalconf.default_screen,
                                                        buf, len)))
                 (*titlebar)->need_update = true;
-        return 0;
-      case A_TK_WIDGETS:
-        luaA_checktable(L, 3);
-
-        /* remove all widgets */
-        for(witer = (*titlebar)->widgets; witer; witer = (*titlebar)->widgets)
-        {
-            if(witer->widget->detach)
-                witer->widget->detach(witer->widget, *titlebar);
-            widget_unref(&witer->widget);
-            widget_node_list_detach(&(*titlebar)->widgets, witer);
-            p_delete(&witer);
-        }
-
-        (*titlebar)->need_update = true;
-
-        /* now read all widgets and add them */
-        lua_pushnil(L);
-        while(lua_next(L, 3))
-        {
-            widget_t **widget = luaA_checkudata(L, -1, "widget");
-            widget_node_t *w = p_new(widget_node_t, 1);
-            w->widget = *widget;
-            widget_node_list_append(&(*titlebar)->widgets, w);
-            widget_ref(widget);
-            lua_pop(L, 1);
-        }
         break;
       case A_TK_POSITION:
         buf = luaL_checklstring(L, 3, &len);
@@ -518,8 +490,6 @@ luaA_titlebar_index(lua_State *L)
     titlebar_t **titlebar = luaA_checkudata(L, 1, "titlebar");
     const char *attr = luaL_checklstring(L, 2, &len);
     client_t *c;
-    widget_node_t *witer;
-    int i = 0;
 
     if(luaA_usemetatable(L, 1, 2))
         return 1;
@@ -546,14 +516,6 @@ luaA_titlebar_index(lua_State *L)
       case A_TK_BG:
         luaA_pushcolor(L, &(*titlebar)->colors.bg);
         break;
-      case A_TK_WIDGETS:
-        lua_newtable(L);
-        for(witer = (*titlebar)->widgets; witer; witer = witer->next)
-        {
-            luaA_widget_userdata_new(L, witer->widget);
-            lua_rawseti(L, -2, ++i);
-        }
-        break;
       case A_TK_POSITION:
         lua_pushstring(L, position_tostr((*titlebar)->position)); 
         break;
@@ -564,6 +526,20 @@ luaA_titlebar_index(lua_State *L)
     return 1;
 }
 
+static int
+luaA_titlebar_widgets(lua_State *L)
+{
+    titlebar_t **titlebar = luaA_checkudata(L, 1, "titlebar");
+
+    if(lua_gettop(L) == 2)
+    {
+        luaA_widget_set(L, 2, *titlebar, &(*titlebar)->widgets);
+        (*titlebar)->need_update = true;
+        return 1;
+    }
+    return luaA_widget_get(L, (*titlebar)->widgets);
+}
+
 /** Convert a titlebar to a printable string.
  * \param L The Lua VM state.
  * \return The number of value pushed.
@@ -587,6 +563,7 @@ const struct luaL_reg awesome_titlebar_methods[] =
 };
 const struct luaL_reg awesome_titlebar_meta[] =
 {
+    { "widgets", luaA_titlebar_widgets },
     { "__index", luaA_titlebar_index },
     { "__newindex", luaA_titlebar_newindex },
     { "__eq", luaA_titlebar_eq },

widget.c

@@ -401,6 +401,65 @@ luaA_widget_newindex(lua_State *L)
     return (*widget)->newindex ? (*widget)->newindex(L, token) : 0;
 }
 
+/** Generic widget set.
+ * \param L The Lua VM state.
+ * \param idx The table of widgets index.
+ * \param object The object the widget will be attached to.
+ * \param widgets The widgets to fill.
+ * \return The number of elements pushed on stack.
+ */
+void
+luaA_widget_set(lua_State *L, int idx, void *object, widget_node_t **widgets)
+{
+    widget_node_t *witer;
+
+    luaA_checktable(L, idx);
+
+    /* remove all widgets */
+    for(witer = *widgets; witer; witer = *widgets)
+    {
+        if(witer->widget->detach)
+            witer->widget->detach(witer->widget, object);
+        widget_unref(&witer->widget);
+        widget_node_list_detach(widgets, witer);
+        p_delete(&witer);
+    }
+
+    /* now read all widgets and add them */
+    lua_pushnil(L);
+    while(lua_next(L, idx))
+    {
+        widget_t **widget = luaA_checkudata(L, -1, "widget");
+        widget_node_t *w = p_new(widget_node_t, 1);
+        w->widget = *widget;
+        widget_node_list_append(widgets, w);
+        widget_ref(widget);
+        lua_pop(L, 1);
+    }
+}
+
+/** Generic widget get.
+ * \param L The Lua VM state.
+ * \param widget The widget list.
+ * \return The number of elements pushed on stack.
+ */
+int
+luaA_widget_get(lua_State *L, widget_node_t *widgets)
+{
+    widget_node_t *witer;
+    int i = 0;
+
+    lua_newtable(L);
+
+    for(witer = widgets; witer; witer = witer->next)
+    {
+        luaA_widget_userdata_new(L, witer->widget);
+        lua_rawseti(L, -2, ++i);
+    }
+
+    return 1;
+}
+
 const struct luaL_reg awesome_widget_methods[] =
 {
     { "__call", luaA_widget_new },

widget.h

@@ -32,6 +32,8 @@ void widget_invalidate_cache(int, int);
 int widget_calculate_offset(int, int, int, int);
 void widget_common_new(widget_t *);
 void widget_render(widget_node_t *, draw_context_t *, xcb_gcontext_t, xcb_drawable_t, int, position_t, int, int, void *, awesome_type_t);
+void luaA_widget_set(lua_State *, int, void *, widget_node_t **);
+int luaA_widget_get(lua_State *, widget_node_t *);
 
 int luaA_widget_userdata_new(lua_State *, widget_t *);