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+/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
+
+/*
+ *This file is part of the Croco Library
+ *
+ *The Croco Library is free software; 
+ *you can redistribute it and/or modify it under the terms of 
+ *the GNU General Public License as 
+ *published by the Free Software Foundation; either version 2, 
+ *or (at your option) any later version.
+ *
+ *The Croco Library is distributed in the hope 
+ *that it will be useful, but WITHOUT ANY WARRANTY; 
+ *without even the implied warranty of 
+ *MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *See the GNU General Public License for more details.
+ *
+ *You should have received a copy of the 
+ *GNU General Public License along with The Croco Library; 
+ *see the file COPYING. If not, write to 
+ *the Free Software Foundation, Inc., 
+ *59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ *Copyright 2002-2003 Dodji Seketeli <dodji@seketeli.org>
+ */
+
+/*
+ *$Id$
+ */
+
+#include <stdio.h>
+#include "cr-utils.h"
+#include "cr-term.h"
+#include "cr-selector.h"
+#include "cr-declaration.h"
+
+#ifndef __CR_STATEMENT_H__
+#define __CR_STATEMENT_H__
+
+G_BEGIN_DECLS
+
+/**
+ *@file
+ *Declaration of the #CRStatement class.
+ */
+
+struct _CRStatement ;
+typedef struct _CRStatement CRStatement ;
+
+struct _CRAtMediaRule ;
+typedef struct _CRAtMediaRule CRAtMediaRule ;
+
+typedef struct _CRRuleSet CRRuleSet ;
+/**
+ *The abstraction of a css ruleset.
+ *A ruleset is made of a list of selectors,
+ *followed by a list of declarations.
+ */
+struct _CRRuleSet
+{
+	/**A list of instances of #CRSimpeSel*/
+	CRSelector *sel_list ;
+
+	/**A list of instances of #CRDeclaration*/
+	CRDeclaration *decl_list ;
+	
+	/**
+	 *The parent media rule, or NULL if
+	 *no parent media rule exists.
+	 */
+	CRAtMediaRule *media_rule ;
+} ;
+
+/*
+ *a forward declaration of CRStylesheet.
+ *CRStylesheet is actually declared in
+ *cr-stylesheet.h
+ */
+struct _CRStyleSheet ;
+typedef struct _CRStyleSheet CRStyleSheet;
+
+
+/**The @import rule abstraction.*/
+typedef struct _CRAtImportRule CRAtImportRule ;
+struct _CRAtImportRule
+{
+	/**the url of the import rule*/
+	GString *url ;
+
+        GList *media_list ;
+
+	/**
+	 *the stylesheet fetched from the url, if any.
+	 *this is not "owned" by #CRAtImportRule which means
+	 *it is not destroyed by the destructor of #CRAtImportRule.
+	 */
+	CRStyleSheet * sheet;
+};
+
+
+/**abstraction of an @media rule*/
+struct _CRAtMediaRule
+{
+	GList *media_list ;
+	CRStatement *rulesets ;	
+} ;
+
+
+typedef struct _CRAtPageRule CRAtPageRule ;
+/**The @page rule abstraction*/
+struct _CRAtPageRule
+{
+	/**a list of instances of #CRDeclaration*/
+	CRDeclaration *decls_list ;
+
+	/**page selector. Is a pseudo selector*/
+	GString *name ;
+	GString *pseudo ;
+} ;
+
+/**The @charset rule abstraction*/
+typedef struct _CRAtCharsetRule CRAtCharsetRule ;
+struct _CRAtCharsetRule
+{
+	GString * charset ;
+};
+
+/**The abstaction of the @font-face rule.*/
+typedef struct _CRAtFontFaceRule CRAtFontFaceRule ;
+struct _CRAtFontFaceRule
+{
+	/*a list of instanaces of #CRDeclaration*/
+	CRDeclaration *decls_list ;
+} ;
+
+
+/**
+ *The possible types of css2 statements.
+ */
+enum CRStatementType
+{
+	/**
+	 *A generic css at-rule
+	 *each unknown at-rule will
+	 *be of this type.
+	 */
+	AT_RULE_STMT = 0,
+
+	/**A css at-rule*/
+	RULESET_STMT,
+
+	/**A css2 import rule*/
+	AT_IMPORT_RULE_STMT,
+
+	/**A css2 media rule*/
+	AT_MEDIA_RULE_STMT,
+
+	/**A css2 page rule*/
+	AT_PAGE_RULE_STMT,
+
+	/**A css2 charset rule*/
+	AT_CHARSET_RULE_STMT,
+
+	/**A css2 font face rule*/
+	AT_FONT_FACE_RULE_STMT	
+} ;
+
+
+/**
+ *The abstraction of css statement as defined
+ *in the chapter 4 and appendix D.1 of the css2 spec.
+ *A statement is actually a double chained list of
+ *statements.A statement can be a ruleset, an @import
+ *rule, an @page rule etc ...
+ */
+struct _CRStatement
+{
+	/**
+	 *The type of the statement.
+	 */
+	enum CRStatementType type ;
+
+	union
+	{
+		CRRuleSet *ruleset ;
+		CRAtImportRule *import_rule ;
+		CRAtMediaRule *media_rule ;
+		CRAtPageRule *page_rule ;
+		CRAtCharsetRule *charset_rule ;
+		CRAtFontFaceRule *font_face_rule ;
+	} kind ;
+	
+	CRStatement *next ;
+	CRStatement *prev ;
+} ;
+
+
+CRStatement*
+cr_statement_new_ruleset (CRSelector *a_sel_list, 
+			  CRDeclaration *a_decl_list,
+			  CRAtMediaRule *a_media_rule) ;
+
+CRStatement*
+cr_statement_new_at_import_rule (GString *a_url,
+                                 GList *a_media_list,
+				 CRStyleSheet *a_sheet) ;
+
+CRStatement *
+cr_statement_new_at_media_rule (CRStatement *a_ruleset,
+				GList *a_media) ;
+
+CRStatement *
+cr_statement_new_at_charset_rule (GString *a_charset) ;
+
+CRStatement *
+cr_statement_new_at_font_face_rule (CRDeclaration *a_font_decls) ;
+
+CRStatement *
+cr_statement_new_at_page_rule (CRDeclaration *a_decl_list,
+			       GString *a_name,
+			       GString *a_pseudo) ;
+CRStatement *
+cr_statement_append (CRStatement *a_this,
+		     CRStatement *a_new) ;
+
+CRStatement*
+cr_statement_prepend (CRStatement *a_this,
+		      CRStatement *a_new) ;
+
+CRStatement *
+cr_statement_unlink (CRStatement *a_this,
+		     CRStatement *a_to_unlink) ;
+
+enum CRStatus
+cr_statement_ruleset_set_sel_list (CRStatement *a_this,
+				   CRSelector *a_sel_list) ;
+
+enum CRStatus
+cr_statement_ruleset_get_sel_list (CRStatement *a_this,
+				   CRSelector **a_list) ;
+
+enum CRStatus
+cr_statement_ruleset_set_decl_list (CRStatement *a_this,
+				    CRDeclaration *a_list) ;
+
+enum CRStatus
+cr_statement_ruleset_append_decl2 (CRStatement *a_this,
+				   GString *a_prop, CRTerm *a_value) ;
+
+enum CRStatus
+cr_statement_ruleset_append_decl (CRStatement *a_this,
+				  CRDeclaration *a_decl) ;
+
+enum CRStatus
+cr_statement_at_import_rule_set_sheet (CRStatement *a_this,
+				       CRStyleSheet *a_sheet) ;
+
+enum CRStatus
+cr_statement_at_import_rule_get_sheet (CRStatement *a_this,
+				       CRStyleSheet **a_sheet) ;
+
+enum CRStatus
+cr_statement_at_import_rule_set_url (CRStatement *a_this,
+				     GString *a_url) ;
+
+enum CRStatus
+cr_statement_at_import_rule_get_url (CRStatement *a_this,
+				     GString **a_url) ;
+
+enum CRStatus
+cr_statement_at_page_rule_set_sel (CRStatement *a_this,
+				   CRSelector *a_sel) ;
+
+enum CRStatus
+cr_statement_at_page_rule_get_sel (CRStatement *a_this,
+				   CRSelector **a_sel) ;
+
+enum CRStatus
+cr_statement_at_page_rule_set_declarations (CRStatement *a_this,
+					    CRDeclaration *a_decl_list) ;
+
+enum CRStatus
+cr_statement_at_page_rule_get_declarations (CRStatement *a_this,
+					    CRDeclaration **a_decl_list) ;
+
+enum CRStatus
+cr_statement_at_charset_rule_set_charset (CRStatement *a_this,
+					  GString *a_charset) ;
+
+enum CRStatus
+cr_statement_at_charset_rule_get_charset (CRStatement *a_this,
+					  GString **a_charset) ;
+
+enum CRStatus
+cr_statement_at_font_face_rule_set_decls (CRStatement *a_this,
+					  CRDeclaration *a_decls) ;
+
+enum CRStatus
+cr_statement_at_font_face_rule_get_decls (CRStatement *a_this,
+					  CRDeclaration **a_decls) ;
+
+enum CRStatus
+cr_statement_at_font_face_rule_add_decl (CRStatement *a_this,
+					 GString *a_prop,
+					 CRTerm *a_value) ;
+
+void
+cr_statement_dump (CRStatement *a_this, FILE *a_fp, gulong a_indent) ;
+
+void
+cr_statement_destroy (CRStatement *a_this) ;
+
+G_END_DECLS
+
+#endif /*__CR_STATEMENT_H__*/