cssmatcher: Allow widget path matcher to take a node declaration

The node declaration has the same functionality as
gtk_css_node_declaration_add_to_widget_path(). So instead of using that
function on a path, you can use the original path and the declaration in
a matcher.

gtk/gtkcssmatcher.c

@@ -19,6 +19,7 @@
 
 #include "gtkcssmatcherprivate.h"
 
+#include "gtkcssnodedeclarationprivate.h"
 #include "gtkwidgetpath.h"
 
 /* GTK_CSS_MATCHER_WIDGET_PATH */
@@ -31,6 +32,7 @@ gtk_css_matcher_widget_path_get_parent (GtkCssMatcher       *matcher,
     return FALSE;
 
   matcher->path.klass = child->path.klass;
+  matcher->path.decl = NULL;
   matcher->path.path = child->path.path;
   matcher->path.index = child->path.index - 1;
   matcher->path.sibling_index = gtk_widget_path_iter_get_sibling_index (matcher->path.path, matcher->path.index);
@@ -46,6 +48,7 @@ gtk_css_matcher_widget_path_get_previous (GtkCssMatcher       *matcher,
     return FALSE;
 
   matcher->path.klass = next->path.klass;
+  matcher->path.decl = NULL;
   matcher->path.path = next->path.path;
   matcher->path.index = next->path.index;
   matcher->path.sibling_index = next->path.sibling_index - 1;
@@ -58,6 +61,9 @@ gtk_css_matcher_widget_path_get_state (const GtkCssMatcher *matcher)
 {
   const GtkWidgetPath *siblings;
   
+  if (matcher->path.decl)
+    return gtk_css_node_declaration_get_state (matcher->path.decl);
+
   siblings = gtk_widget_path_iter_get_siblings (matcher->path.path, matcher->path.index);
   if (siblings && matcher->path.sibling_index != gtk_widget_path_iter_get_sibling_index (matcher->path.path, matcher->path.index))
     return gtk_widget_path_iter_get_state (siblings, matcher->path.sibling_index);
@@ -84,6 +90,10 @@ gtk_css_matcher_widget_path_has_class (const GtkCssMatcher *matcher,
 {
   const GtkWidgetPath *siblings;
   
+  if (matcher->path.decl &&
+      gtk_css_node_declaration_has_class (matcher->path.decl, class_name))
+    return TRUE;
+
   siblings = gtk_widget_path_iter_get_siblings (matcher->path.path, matcher->path.index);
   if (siblings && matcher->path.sibling_index != gtk_widget_path_iter_get_sibling_index (matcher->path.path, matcher->path.index))
     return gtk_widget_path_iter_has_qclass (siblings, matcher->path.sibling_index, class_name);
@@ -111,6 +121,16 @@ gtk_css_matcher_widget_path_has_regions (const GtkCssMatcher *matcher)
   GSList *regions;
   gboolean result;
 
+  if (matcher->path.decl)
+    {
+      GList *list = gtk_css_node_declaration_list_regions (matcher->path.decl);
+      if (list)
+        {
+          g_list_free (list);
+          return TRUE;
+        }
+    }
+
 G_GNUC_BEGIN_IGNORE_DEPRECATIONS
   siblings = gtk_widget_path_iter_get_siblings (matcher->path.path, matcher->path.index);
   if (siblings && matcher->path.sibling_index != gtk_widget_path_iter_get_sibling_index (matcher->path.path, matcher->path.index))
@@ -132,6 +152,14 @@ gtk_css_matcher_widget_path_has_region (const GtkCssMatcher *matcher,
   const GtkWidgetPath *siblings;
   GtkRegionFlags region_flags;
   
+  if (matcher->path.decl)
+    {
+      GQuark q = g_quark_try_string (region);
+
+      if (q && gtk_css_node_declaration_has_region (matcher->path.decl, q, &region_flags))
+        goto found;
+    }
+
 G_GNUC_BEGIN_IGNORE_DEPRECATIONS
   siblings = gtk_widget_path_iter_get_siblings (matcher->path.path, matcher->path.index);
   if (siblings && matcher->path.sibling_index != gtk_widget_path_iter_get_sibling_index (matcher->path.path, matcher->path.index))
@@ -144,12 +172,13 @@ G_GNUC_BEGIN_IGNORE_DEPRECATIONS
       if (!gtk_widget_path_iter_has_region (matcher->path.path, matcher->path.index, region, &region_flags))
         return FALSE;
     }
+G_GNUC_END_IGNORE_DEPRECATIONS
 
+found:
   if ((flags & region_flags) != flags)
     return FALSE;
 
   return TRUE;
-G_GNUC_END_IGNORE_DEPRECATIONS
 }
 
 static gboolean
@@ -195,13 +224,15 @@ static const GtkCssMatcherClass GTK_CSS_MATCHER_WIDGET_PATH = {
 };
 
 gboolean
-_gtk_css_matcher_init (GtkCssMatcher       *matcher,
+_gtk_css_matcher_init (GtkCssMatcher               *matcher,
-                       const GtkWidgetPath *path)
+                       const GtkWidgetPath         *path,
+                       const GtkCssNodeDeclaration *decl)
 {
   if (gtk_widget_path_length (path) == 0)
     return FALSE;
 
   matcher->path.klass = &GTK_CSS_MATCHER_WIDGET_PATH;
+  matcher->path.decl = decl;
   matcher->path.path = path;
   matcher->path.index = gtk_widget_path_length (path) - 1;
   matcher->path.sibling_index = gtk_widget_path_iter_get_sibling_index (path, matcher->path.index);

gtk/gtkcssmatcherprivate.h

@@ -54,6 +54,7 @@ struct _GtkCssMatcherClass {
 
 struct _GtkCssMatcherWidgetPath {
   const GtkCssMatcherClass *klass;
+  const GtkCssNodeDeclaration *decl;
   const GtkWidgetPath      *path;
   guint                     index;
   guint                     sibling_index;
@@ -72,7 +73,8 @@ union _GtkCssMatcher {
 };
 
 gboolean          _gtk_css_matcher_init           (GtkCssMatcher          *matcher,
-                                                   const GtkWidgetPath    *path) G_GNUC_WARN_UNUSED_RESULT;
+                                                   const GtkWidgetPath    *path,
+                                                   const GtkCssNodeDeclaration *decl) G_GNUC_WARN_UNUSED_RESULT;
 void              _gtk_css_matcher_any_init       (GtkCssMatcher          *matcher);
 void              _gtk_css_matcher_superset_init  (GtkCssMatcher          *matcher,
                                                    const GtkCssMatcher    *subset,

gtk/gtkcssnode.c

@@ -305,7 +305,7 @@ gtk_css_node_real_init_matcher (GtkCssNode     *cssnode,
   
   path = gtk_css_node_create_widget_path (cssnode);
 
-  if (!_gtk_css_matcher_init (matcher, path))
+  if (!_gtk_css_matcher_init (matcher, path, NULL))
     {
       gtk_widget_path_free (path);
       return FALSE;

gtk/gtkcssnodedeclarationprivate.h

@@ -18,14 +18,12 @@
 #ifndef __GTK_CSS_NODE_DECLARATION_PRIVATE_H__
 #define __GTK_CSS_NODE_DECLARATION_PRIVATE_H__
 
+#include "gtkcsstypesprivate.h"
 #include "gtkenums.h"
 #include "gtkwidgetpath.h"
 
 G_BEGIN_DECLS
 
-typedef struct _GtkCssNodeDeclaration GtkCssNodeDeclaration;
-
-
 GtkCssNodeDeclaration * gtk_css_node_declaration_new                    (void);
 GtkCssNodeDeclaration * gtk_css_node_declaration_ref                    (GtkCssNodeDeclaration         *decl);
 void                    gtk_css_node_declaration_unref                  (GtkCssNodeDeclaration         *decl);

gtk/gtkcssprovider.c

@@ -1695,7 +1695,7 @@ gtk_css_provider_get_style_property (GtkStyleProvider *provider,
       gtk_widget_path_iter_set_state (path, -1, state);
     }
 
-  if (!_gtk_css_matcher_init (&matcher, path))
+  if (!_gtk_css_matcher_init (&matcher, path, NULL))
     {
       gtk_widget_path_unref (path);
       return FALSE;

gtk/gtkcsstypesprivate.h

@@ -25,6 +25,7 @@ G_BEGIN_DECLS
 
 typedef union _GtkCssMatcher GtkCssMatcher;
 typedef struct _GtkCssNode GtkCssNode;
+typedef struct _GtkCssNodeDeclaration GtkCssNodeDeclaration;
 typedef struct _GtkCssStyle GtkCssStyle;
 typedef struct _GtkStyleProviderPrivate GtkStyleProviderPrivate; /* dummy typedef */