applied a patch of Rob BUIS to add the support of the :lang() pseudo class

2004-02-29  Dodji Seketeli  <dodji@gnome.org>

* src/cr-sel-eng.c: applied a patch of Rob BUIS
to add the support of the :lang() pseudo class using
the pluggable pseudo class system.
* tests/test5-main.c,tests/test-inputs/test5.1.css,tests/test-output-refs/test5.1.css.out:
Updated the non regression tests suite to test the :lang() pseudo
class.

5 files changed, 77 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 5a944bd..150f214 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,14 @@
 2004-02-29  Dodji Seketeli  <dodji@gnome.org>
 
+	* src/cr-sel-eng.c: applied a patch of Rob BUIS
+	to add the support of the :lang() pseudo class using
+	the pluggable pseudo class system.
+	* tests/test5-main.c,tests/test-inputs/test5.1.css,tests/test-output-refs/test5.1.css.out:
+	Updated the non regression tests suite to test the :lang() pseudo
+	class.
+
+2004-02-29  Dodji Seketeli  <dodji@gnome.org>
+
 	* src/cr-statement.[ch],src/cr-stylesheet.[ch]:
 	applied a patch from Rob BUIS that provides new apis
 	to manipulate CSS statements.
diff --git a/src/cr-sel-eng.c b/src/cr-sel-eng.c
index 5a8954a..bfa61ea 100644
--- a/src/cr-sel-eng.c
+++ b/src/cr-sel-eng.c
@@ -94,6 +94,10 @@ static gboolean pseudo_class_add_sel_matches_node (CRSelEng * a_this,
                                                    CRAdditionalSel *a_add_sel,
                                                    xmlNode *a_node) ;
 
+static gboolean lang_pseudo_class_handler (CRSelEng *a_this,
+                                           CRAdditionalSel *a_sel,
+                                           xmlNode *a_node) ;
+
 static gboolean first_child_pseudo_class_handler (CRSelEng *a_this,
                                                   CRAdditionalSel *a_sel,
                                                   xmlNode *a_node) ;
@@ -107,6 +111,52 @@ static xmlNode * get_prev_element_node (xmlNode *a_node) ;
 static xmlNode * get_next_parent_element_node (xmlNode *a_node) ;
 
 static gboolean 
+lang_pseudo_class_handler (CRSelEng *a_this,
+                           CRAdditionalSel *a_sel,
+                           xmlNode *a_node)
+{
+        xmlNode *node = a_node ;
+	xmlChar *val = NULL;
+        gboolean result = FALSE ;
+
+        g_return_val_if_fail (a_this && PRIVATE (a_this)
+                              && a_sel && a_sel->content.pseudo
+                              && a_sel->content.pseudo
+                              && a_sel->content.pseudo->name
+                              && a_node,
+                              CR_BAD_PARAM_ERROR) ;
+
+        if (strncmp (a_sel->content.pseudo->name->str,
+                    "lang", 4) 
+            || !a_sel->content.pseudo->type == FUNCTION_PSEUDO)
+        {
+                cr_utils_trace_info 
+                        ("This handler is for :lang only") ;
+                return CR_BAD_PSEUDO_CLASS_SEL_HANDLER_ERROR ;
+        }
+        /*lang code should exist and be at least of length 2*/
+        if (!a_sel->content.pseudo->extra || a_sel->content.pseudo->extra->len < 2)
+                return FALSE ;
+	for (;node;node = get_next_parent_element_node (node))
+	{
+		val = xmlGetProp (node, "lang");
+		if (val
+                    && !strncmp (val, 
+                                 a_sel->content.pseudo->extra->str, 
+                                 a_sel->content.pseudo->extra->len))
+                {
+			result = TRUE ;
+                }
+	}
+        if (val)
+        {
+                xmlFree (val) ;
+                val = NULL ;
+        }
+	return result ;
+}
+
+static gboolean 
 first_child_pseudo_class_handler (CRSelEng *a_this,
                                   CRAdditionalSel *a_sel,
                                   xmlNode *a_node)
@@ -1241,6 +1291,11 @@ cr_sel_eng_new (void)
                  IDENT_PSEUDO,
                  (CRPseudoClassSelectorHandler)
                  first_child_pseudo_class_handler) ;
+        cr_sel_eng_register_pseudo_class_sel_handler 
+                (result, (guchar*)"lang",
+                 FUNCTION_PSEUDO,
+                 (CRPseudoClassSelectorHandler)
+                 lang_pseudo_class_handler) ;
 
 	return result ;
 }
diff --git a/tests/test-inputs/test5.1.css b/tests/test-inputs/test5.1.css
index 8847471..26c3627 100644
--- a/tests/test-inputs/test5.1.css
+++ b/tests/test-inputs/test5.1.css
@@ -4,6 +4,7 @@
 [attr3~=val3_2] {prop6: val6}
 [attr2=val2] {prop5: val5}
 :first-child {first-child-prop: first-child-value}
+:lang(fr) {lang-prop: lang-value}
 E2[attr2=val2] {prop8: val8}
 E0 {prop0: val0}
 E0+E1{pro1:val1} 
diff --git a/tests/test-output-refs/test5.1.css.out b/tests/test-output-refs/test5.1.css.out
index b29f30e..75b17d0 100644
--- a/tests/test-output-refs/test5.1.css.out
+++ b/tests/test-output-refs/test5.1.css.out
@@ -120,3 +120,14 @@ xml start element: E6
 
 xml end element: E6
 '''''''''''''''''''''''''
+'''''''''''''''''''''''''
+xml start element: E7
+
+
+
+  :lang(fr) {
+    lang-prop : lang-value
+  }
+
+xml end element: E7
+'''''''''''''''''''''''''
diff --git a/tests/test5-main.c b/tests/test5-main.c
index 6305543..4214746 100644
--- a/tests/test5-main.c
+++ b/tests/test5-main.c
@@ -45,6 +45,7 @@ const guchar *xml_content=
 "<E4 attr4=\"val4_1-val4_2-val4_3\">text4</E4>"
 "<E5 class=\"class5\">text5</E5>"
 "<E6 id=\"id6\">text6</E6>"
+"<E7 lang=\"fr\">text7</E7>"
 "</document>";
 
 static void