client: icon_name is stored and watched

This permits to update tasklist on icon name changes.

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

client.c

@@ -461,6 +461,7 @@ client_manage(xcb_window_t w, xcb_get_geometry_reply_t *wgeom, int phys_screen,
 
     /* update window title */
     property_update_wm_name(c);
+    property_update_wm_icon_name(c);
 
     /* update strut */
     ewmh_client_strut_update(c, NULL);
@@ -1436,13 +1437,7 @@ luaA_client_index(lua_State *L)
         p_delete(&value);
         break;
       case A_TK_ICON_NAME:
-        if(!xutil_text_prop_get(globalconf.connection, (*c)->win,
-                                _NET_WM_ICON_NAME, &value, &slen))
-            if(!xutil_text_prop_get(globalconf.connection, (*c)->win,
-                                    WM_ICON_NAME, &value, &slen))
-                return 0;
-        lua_pushlstring(L, value, slen);
-        p_delete(&value);
+        lua_pushstring(L, (*c)->icon_name);
         break;
       case A_TK_SCREEN:
         lua_pushnumber(L, 1 + (*c)->screen);

lib/awful/widget.lua.in

@@ -254,7 +254,8 @@ function tasklist.new(label, buttons)
         if prop == "urgent"
             or prop == "floating"
             or prop == "icon"
-            or prop == "name" then
+            or prop == "name"
+            or prop == "icon_name" then
             tasklist_update()
         end
     end)

property.c

@@ -239,6 +239,31 @@ property_update_wm_name(client_t *c)
     hooks_property(c, "name");
 }
 
+/** Update client icon name attribute with its new title.
+ * \param c The client.
+ * \param Return true if it has been updated.
+ */
+void
+property_update_wm_icon_name(client_t *c)
+{
+    char *name, *utf8;
+    ssize_t len;
+
+    if(!xutil_text_prop_get(globalconf.connection, c->win, _NET_WM_ICON_NAME, &name, &len))
+        if(!xutil_text_prop_get(globalconf.connection, c->win, WM_ICON_NAME, &name, &len))
+            return;
+
+    p_delete(&c->icon_name);
+
+    if((utf8 = draw_iso2utf8(name, len)))
+        c->icon_name = utf8;
+    else
+        c->icon_name = name;
+
+    /* call hook */
+    hooks_property(c, "icon_name");
+}
+
 static int
 property_handle_wm_name(void *data,
                         xcb_connection_t *connection,
@@ -255,6 +280,22 @@ property_handle_wm_name(void *data,
     return 0;
 }
 
+static int
+property_handle_wm_icon_name(void *data,
+                             xcb_connection_t *connection,
+                             uint8_t state,
+                             xcb_window_t window,
+                             xcb_atom_t name,
+                             xcb_get_property_reply_t *reply)
+{
+    client_t *c = client_getbywin(window);
+
+    if(c)
+        property_update_wm_icon_name(c);
+
+    return 0;
+}
+
 static int
 property_handle_net_wm_strut_partial(void *data,
                                      xcb_connection_t *connection,
@@ -360,10 +401,14 @@ void a_xcb_set_property_handlers(void)
                              property_handle_wm_hints, NULL);
     xcb_property_set_handler(&globalconf.prophs, WM_NAME, UINT_MAX,
                              property_handle_wm_name, NULL);
+    xcb_property_set_handler(&globalconf.prophs, WM_ICON_NAME, UINT_MAX,
+                             property_handle_wm_icon_name, NULL);
 
     /* EWMH stuff */
     xcb_property_set_handler(&globalconf.prophs, _NET_WM_NAME, UINT_MAX,
                              property_handle_wm_name, NULL);
+    xcb_property_set_handler(&globalconf.prophs, _NET_WM_ICON_NAME, UINT_MAX,
+                             property_handle_wm_icon_name, NULL);
     xcb_property_set_handler(&globalconf.prophs, _NET_WM_STRUT_PARTIAL, UINT_MAX,
                              property_handle_net_wm_strut_partial, NULL);
     xcb_property_set_handler(&globalconf.prophs, _NET_WM_ICON, UINT_MAX,

property.h

@@ -28,6 +28,7 @@ void property_update_wm_transient_for(client_t *, xcb_get_property_reply_t *);
 void property_update_wm_normal_hints(client_t *, xcb_get_property_reply_t *);
 void property_update_wm_hints(client_t *, xcb_get_property_reply_t *);
 void property_update_wm_name(client_t *);
+void property_update_wm_icon_name(client_t *);
 void a_xcb_set_property_handlers(void);
 
 #endif

structs.h

@@ -219,7 +219,7 @@ struct client_t
     /** Valid, or not ? */
     bool invalid;
     /** Client name */
-    char *name;
+    char *name, *icon_name;
     /** Window geometry */
     area_t geometry;
     /** Floating window geometry */