css: Add a :checked pseudoclass

https://bugzilla.gnome.org/show_bug.cgi?id=733967

gtk/gtkcssselector.c

@@ -1111,7 +1111,8 @@ gtk_css_selector_pseudoclass_state_print (const GtkCssSelector *selector,
     "dir(ltr)",
     "dir(rtl)",
     "link",
-    "visited"
+    "visited",
+    "checked"
   };
   guint i, state;
 
@@ -1831,7 +1832,8 @@ parse_selector_pseudo_class (GtkCssParser   *parser,
     { "dir(ltr)",     GTK_STATE_FLAG_DIR_LTR, },
     { "dir(rtl)",     GTK_STATE_FLAG_DIR_RTL, },
     { "link",         GTK_STATE_FLAG_LINK, },
-    { "visited",      GTK_STATE_FLAG_VISITED, }
+    { "visited",      GTK_STATE_FLAG_VISITED, },
+    { "checked",      GTK_STATE_FLAG_CHECKED, }
   };
   guint i;
 

gtk/gtkenums.h

@@ -856,6 +856,7 @@ typedef enum
  * @GTK_STATE_FLAG_DIR_RTL: Widget is in right-to-left text direction. Since 3.8
  * @GTK_STATE_FLAG_LINK: Widget is a link. Since 3.12
  * @GTK_STATE_FLAG_VISITED: The location the widget points to has already been visited. Since 3.12
+ * @GTK_STATE_FLAG_CHECKED: Widget is checked. Since 3.14
  *
  * Describes a widget state. Widget states are used to match the widget
  * against CSS pseudo-classes. Note that GTK extends the regular CSS
@@ -874,7 +875,8 @@ typedef enum
   GTK_STATE_FLAG_DIR_LTR      = 1 << 7,
   GTK_STATE_FLAG_DIR_RTL      = 1 << 8,
   GTK_STATE_FLAG_LINK         = 1 << 9,
-  GTK_STATE_FLAG_VISITED      = 1 << 10
+  GTK_STATE_FLAG_VISITED      = 1 << 10,
+  GTK_STATE_FLAG_CHECKED      = 1 << 11
 } GtkStateFlags;
 
 /**

gtk/gtkwidget.c

@@ -456,7 +456,7 @@
 
 #define WIDGET_CLASS(w)	 GTK_WIDGET_GET_CLASS (w)
 
-#define GTK_STATE_FLAGS_BITS 11
+#define GTK_STATE_FLAGS_BITS 12
 
 typedef struct {
   gchar               *name;           /* Name of the template automatic child */

gtk/gtkwidgetpath.c

@@ -333,18 +333,14 @@ gtk_widget_path_to_string (const GtkWidgetPath *path)
         {
           GFlagsClass *fclass;
           gint i;
-          gboolean appended;
 
-          appended = FALSE;
           fclass = g_type_class_ref (GTK_TYPE_STATE_FLAGS);
           for (i = 0; i < fclass->n_values; i++)
             {
               if (elem->state & fclass->values[i].value)
                 {
-                  if (appended)
-                    g_string_append_c (string, ':');
+                  g_string_append_c (string, ':');
                   g_string_append (string, fclass->values[i].value_nick);
-                  appended = TRUE;
                 }
             }
           g_type_class_unref (fclass);

testsuite/css/parser/pseudo-classes-known.css

@@ -49,3 +49,7 @@
 :visited {
   color: red;
 }
+
+:checked {
+  color: red;
+}

testsuite/css/parser/pseudo-classes-known.ref.css

@@ -49,3 +49,7 @@
 :visited {
   color: rgb(255,0,0);
 }
+
+:checked {
+  color: rgb(255,0,0);
+}