[widgets] Use statusbar name in widget_tell (FS#144)

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

awesome-client.1.txt

@@ -28,9 +28,13 @@ collected lines into awesome with an according immediate execution.
 The command format is:
  screen_number command argument
 
-For example, to change statusbar text on screen 0, you can do the following:
+For example, to change a statusbar textbox text on screen 0, you can do the following:
 
-    echo 0 widget_tell <widget-id> text Hello, world | awesome-client
+    echo 0 widget_tell <statusbar-name> <textbox-name> text Hello, world | awesome-client
+
+To change an iconbox image on screen 1, you can do the following:
+
+    echo 0 widget_tell <statusbar-name> <iconbox-name> image /home/user/image.jpg | awesome-client
 
 To view tag number 3 on screen 1:
 

statusbar.c

@@ -277,8 +277,8 @@ statusbar_refresh()
                 }
 }
 
-static Statusbar *
-statusbar_get_byname(int screen, const char *name)
+Statusbar *
+statusbar_getbyname(int screen, const char *name)
 {
     Statusbar *sb;
 
@@ -308,7 +308,7 @@ statusbar_toggle(Statusbar *statusbar)
 void
 uicb_statusbar_toggle(int screen, char *arg)
 {
-    Statusbar *sb = statusbar_get_byname(screen, arg);
+    Statusbar *sb = statusbar_getbyname(screen, arg);
 
     if(sb)
         statusbar_toggle(sb);

statusbar.h

@@ -28,6 +28,7 @@ void statusbar_refresh(void);
 void statusbar_preinit(Statusbar *);
 void statusbar_init(Statusbar *);
 void statusbar_display(Statusbar *);
+Statusbar * statusbar_getbyname(int, const char *);
 
 Uicb uicb_statusbar_toggle;
 

widget.c

@@ -88,20 +88,18 @@ widget_calculate_offset(int barwidth, int widgetwidth, int offset, int alignment
 }
 
 /** Find a widget on a screen by its name
+ * \param statusbar the statusbar to look into
  * \param name the widget name
- * \param screen the screen to look into
  * \return a widget
  */
 static Widget *
-widget_find(char *name, int screen)
+widget_getbyname(Statusbar *sb, char *name)
 {
     Widget *widget;
-    Statusbar *sb;
 
-    for(sb = globalconf.screens[screen].statusbar; sb; sb = sb->next)
-        for(widget = sb->widgets; widget; widget = widget->next)
-            if(a_strcmp(name, widget->name) == 0)
-                return widget;
+    for(widget = sb->widgets; widget; widget = widget->next)
+        if(!a_strcmp(name, widget->name))
+            return widget;
 
     return NULL;
 }
@@ -184,41 +182,32 @@ widget_invalidate_cache(int screen, int flags)
 void
 uicb_widget_tell(int screen, char *arg)
 {
+    Statusbar *statusbar;
     Widget *widget;
     char *p, *property = NULL, *command;
     ssize_t len;
     widget_tell_status_t status;
 
-    if (!arg)
-    {
-        warn("Must specify a widget.\n");
-        return;
-    }
+    if(!(len = a_strlen(arg)))
+        return warn("must specify a statusbar and a widget.\n");
 
-    len = a_strlen(arg);
-    p = strtok(arg, " ");
-    if(!p)
-    {
-        warn("Ignoring malformed widget command.\n");
-        return;
-    }
+    if(!(p = strtok(arg, " ")))
+        return warn("ignoring malformed widget command (missing statusbar name).\n");
 
-    widget = widget_find(p, screen);
-    if(!widget)
-    {
-        warn("No such widget: %s\n", p);
-        return;
-    }
+    if(!(statusbar = statusbar_getbyname(screen, p)))
+        return warn("no such statusbar: %s\n", p);
 
-    p = strtok(NULL, " ");
-    if(!p)
-    {
-        warn("Ignoring malformed widget command.\n");
-        return;
-    }
+    if(!(p = strtok(NULL, " ")))
+        return warn("ignoring malformed widget command (missing widget name).\n");
+
+    if(!(widget = widget_getbyname(statusbar, p)))
+        return warn("no such widget: %s in statusbar %s.\n", p, statusbar->name);
+
+    if(!(p = strtok(NULL, " ")))
+        return warn("ignoring malformed widget command (missing property name).\n");
 
     property = p;
-    p = p + a_strlen(p) + 1; /* could be out of 'arg' now */
+    p += a_strlen(property) + 1; /* could be out of 'arg' now */
 
     /* arg + len points to the finishing \0.
      * p to the char right of the first space (strtok delimiter)