applied a patch from Rob BUIS that provides new apis to manipulate CSS

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.

5 files changed, 125 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index a80c22f..5a944bd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 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.
+
+2004-02-29  Dodji Seketeli  <dodji@gnome.org>
+
 	* src/cr-sel-eng.c: 
 	(put_css_properties_in_props_list): fixed a small bug in here:
 	Always Initialise output function argument !!!.
diff --git a/src/cr-statement.c b/src/cr-statement.c
index b675826..b8ff481 100644
--- a/src/cr-statement.c
+++ b/src/cr-statement.c
@@ -753,6 +753,45 @@ cr_statement_dump_page (CRStatement *a_this, FILE *a_fp, gulong a_indent)
 }
 
 /**
+ *Return the number of rules in the statement list;
+ *@param a_this the current instance of #CRStatement.
+ *@return number of rules in the statement list.
+ */
+int
+cr_statement_nr_rules (CRStatement *a_this)
+{
+	CRStatement *cur = NULL ;
+	int nr = 0;
+
+	g_return_val_if_fail (a_this, -1) ;
+
+	for (cur = a_this ; cur ; cur = cur->next)
+		nr ++;
+	return nr;
+}
+
+/**
+ *Use an index to get a CRStatement from the statement list.
+ *@param a_this the current instance of #CRStatement.
+ *@param itemnr the index into the statement list.
+ *@return CRStatement at position itemnr, if itemnr > number of statements - 1,
+ *it will return NULL.
+ */
+CRStatement *
+cr_statement_get_from_list (CRStatement *a_this, int itemnr)
+{
+	CRStatement *cur = NULL ;
+	int nr = 0;
+
+	g_return_val_if_fail (a_this, NULL) ;
+
+	for (cur = a_this ; cur ; cur = cur->next)
+		if (nr++ == itemnr)
+			return cur;
+	return NULL;
+}
+
+/**
  *Dumps an @media rule statement to a file.
  *@param a_this the statement to dump.
  *@param a_fp the destination file pointer
@@ -2108,6 +2147,40 @@ cr_statement_at_import_rule_get_url (CRStatement *a_this,
 }
 
 /**
+ *Return the number of rules in the media rule;
+ *@param a_this the current instance of #CRStatement.
+ *@return number of rules in the media rule.
+ */
+int
+cr_statement_at_media_nr_rules (CRStatement *a_this)
+{
+	g_return_val_if_fail (a_this 
+			      && a_this->type == AT_MEDIA_RULE_STMT
+			      && a_this->kind.media_rule,
+			      CR_BAD_PARAM_ERROR) ;
+
+	return cr_statement_nr_rules (a_this->kind.media_rule->rulesets);
+}
+
+/**
+ *Use an index to get a CRStatement from the media rule list of rules.
+ *@param a_this the current instance of #CRStatement.
+ *@param itemnr the index into the media rule list of rules.
+ *@return CRStatement at position itemnr, if itemnr > number of rules - 1,
+ *it will return NULL.
+ */
+CRStatement *
+cr_statement_at_media_get_from_list (CRStatement *a_this, int itemnr)
+{
+	g_return_val_if_fail (a_this 
+			      && a_this->type == AT_MEDIA_RULE_STMT
+			      && a_this->kind.media_rule,
+			      NULL) ;
+
+	return cr_statement_get_from_list (a_this->kind.media_rule->rulesets, itemnr);
+}
+
+/**
  *Sets a declaration list to the current @page rule statement.
  *@param a_this the current @page rule statement.
  *@param a_decl_list the declaration list to add. Will be freed
diff --git a/src/cr-statement.h b/src/cr-statement.h
index b052c26..78a38b4 100644
--- a/src/cr-statement.h
+++ b/src/cr-statement.h
@@ -350,6 +350,12 @@ enum CRStatus
 cr_statement_at_import_rule_get_url (CRStatement *a_this,
 				     GString **a_url) ;
 
+int
+cr_statement_at_media_nr_rules (CRStatement *a_this) ;
+
+CRStatement *
+cr_statement_at_media_get_from_list (CRStatement *a_this, int itemnr) ;
+
 enum CRStatus
 cr_statement_at_page_rule_set_sel (CRStatement *a_this,
 				   CRSelector *a_sel) ;
@@ -390,6 +396,12 @@ cr_statement_at_font_face_rule_add_decl (CRStatement *a_this,
 void
 cr_statement_dump (CRStatement *a_this, FILE *a_fp, gulong a_indent) ;
 
+int
+cr_statement_nr_rules (CRStatement *a_this) ;
+
+CRStatement *
+cr_statement_get_from_list (CRStatement *a_this, int itemnr) ;
+
 void
 cr_statement_destroy (CRStatement *a_this) ;
 
diff --git a/src/cr-stylesheet.c b/src/cr-stylesheet.c
index 06b1c5f..a1b8b01 100644
--- a/src/cr-stylesheet.c
+++ b/src/cr-stylesheet.c
@@ -78,6 +78,34 @@ cr_stylesheet_dump (CRStyleSheet *a_this, FILE *a_fp)
 	}
 }
 
+/**
+ *Return the number of rules in the stylesheet.
+ *@param a_this the current instance of #CRStyleSheet.
+ *@return number of rules in the stylesheet.
+ */
+int
+cr_stylesheets_nr_rules (CRStyleSheet *a_this)
+{
+	g_return_val_if_fail (a_this, -1) ;
+
+	return cr_statement_nr_rules (a_this->statements);
+}
+
+/**
+ *Use an index to get a CRStatement from the rules in a given stylesheet.
+ *@param a_this the current instance of #CRStatement.
+ *@param itemnr the index into the rules.
+ *@return CRStatement at position itemnr, if itemnr > number of rules - 1,
+ *it will return NULL.
+ */
+CRStatement *
+cr_stylesheet_statement_get_from_list (CRStyleSheet *a_this, int itemnr)
+{
+	g_return_val_if_fail (a_this, NULL) ;
+
+	return cr_statement_get_from_list (a_this->statements, itemnr);
+}
+
 void
 cr_stylesheet_ref (CRStyleSheet *a_this)
 {
diff --git a/src/cr-stylesheet.h b/src/cr-stylesheet.h
index c850e6e..6ea3ab0 100644
--- a/src/cr-stylesheet.h
+++ b/src/cr-stylesheet.h
@@ -91,6 +91,12 @@ cr_stylesheet_new (CRStatement *a_stmts) ;
 void
 cr_stylesheet_dump (CRStyleSheet *a_this, FILE *a_fp) ;
 
+int
+cr_stylesheet_nr_rules (CRStyleSheet *a_this) ;
+
+CRStatement *
+cr_stylesheet_statement_get_from_list (CRStyleSheet *a_this, int itemnr) ;
+
 void
 cr_stylesheet_ref (CRStyleSheet *a_this) ;