47758d16ff
This is all of the original libcroco, minus these two which we don't use: - cr-sel-eng - the CSS selection engine for xmlNode. - cr-style. Part of https://gitlab.gnome.org/GNOME/gnome-shell/issues/1934
441 lines
11 KiB
C
441 lines
11 KiB
C
/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
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/*
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* This file is part of The Croco Library
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2.1 of the GNU Lesser General Public
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* License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*
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* Author: Dodji Seketeli
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* See COPYRIGHTS file for copyright information.
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*/
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#include <stdio.h>
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#include "cr-utils.h"
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#include "cr-term.h"
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#include "cr-selector.h"
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#include "cr-declaration.h"
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#ifndef __CR_STATEMENT_H__
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#define __CR_STATEMENT_H__
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G_BEGIN_DECLS
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/**
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*@file
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*Declaration of the #CRStatement class.
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*/
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/*
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*forward declaration of CRStyleSheet which is defined in
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*cr-stylesheet.h
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*/
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struct _CRStatement ;
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/*
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*typedef struct _CRStatement CRStatement ;
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*this is forward declared in
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*cr-declaration.h already.
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*/
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struct _CRAtMediaRule ;
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typedef struct _CRAtMediaRule CRAtMediaRule ;
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typedef struct _CRRuleSet CRRuleSet ;
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/**
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*The abstraction of a css ruleset.
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*A ruleset is made of a list of selectors,
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*followed by a list of declarations.
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*/
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struct _CRRuleSet
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{
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/**A list of instances of #CRSimpeSel*/
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CRSelector *sel_list ;
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/**A list of instances of #CRDeclaration*/
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CRDeclaration *decl_list ;
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/**
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*The parent media rule, or NULL if
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*no parent media rule exists.
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*/
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CRStatement *parent_media_rule ;
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} ;
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/*
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*a forward declaration of CRStylesheet.
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*CRStylesheet is actually declared in
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*cr-stylesheet.h
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*/
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struct _CRStyleSheet ;
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typedef struct _CRStyleSheet CRStyleSheet;
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/**The \@import rule abstraction.*/
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typedef struct _CRAtImportRule CRAtImportRule ;
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struct _CRAtImportRule
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{
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/**the url of the import rule*/
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CRString *url ;
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GList *media_list ;
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/**
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*the stylesheet fetched from the url, if any.
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*this is not "owned" by #CRAtImportRule which means
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*it is not destroyed by the destructor of #CRAtImportRule.
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*/
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CRStyleSheet * sheet;
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};
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/**abstraction of an \@media rule*/
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struct _CRAtMediaRule
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{
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GList *media_list ;
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CRStatement *rulesets ;
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} ;
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typedef struct _CRAtPageRule CRAtPageRule ;
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/**The \@page rule abstraction*/
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struct _CRAtPageRule
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{
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/**a list of instances of #CRDeclaration*/
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CRDeclaration *decl_list ;
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/**page selector. Is a pseudo selector*/
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CRString *name ;
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CRString *pseudo ;
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} ;
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/**The \@charset rule abstraction*/
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typedef struct _CRAtCharsetRule CRAtCharsetRule ;
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struct _CRAtCharsetRule
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{
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CRString * charset ;
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};
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/**The abstaction of the \@font-face rule.*/
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typedef struct _CRAtFontFaceRule CRAtFontFaceRule ;
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struct _CRAtFontFaceRule
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{
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/*a list of instanaces of #CRDeclaration*/
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CRDeclaration *decl_list ;
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} ;
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/**
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*The possible types of css2 statements.
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*/
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enum CRStatementType
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{
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/**
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*A generic css at-rule
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*each unknown at-rule will
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*be of this type.
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*/
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/**A css at-rule*/
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AT_RULE_STMT = 0,
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/*A css ruleset*/
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RULESET_STMT,
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/**A css2 import rule*/
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AT_IMPORT_RULE_STMT,
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/**A css2 media rule*/
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AT_MEDIA_RULE_STMT,
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/**A css2 page rule*/
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AT_PAGE_RULE_STMT,
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/**A css2 charset rule*/
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AT_CHARSET_RULE_STMT,
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/**A css2 font face rule*/
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AT_FONT_FACE_RULE_STMT
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} ;
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/**
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*The abstraction of css statement as defined
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*in the chapter 4 and appendix D.1 of the css2 spec.
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*A statement is actually a double chained list of
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*statements.A statement can be a ruleset, an \@import
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*rule, an \@page rule etc ...
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*/
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struct _CRStatement
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{
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/**
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*The type of the statement.
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*/
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enum CRStatementType type ;
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union
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{
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CRRuleSet *ruleset ;
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CRAtImportRule *import_rule ;
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CRAtMediaRule *media_rule ;
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CRAtPageRule *page_rule ;
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CRAtCharsetRule *charset_rule ;
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CRAtFontFaceRule *font_face_rule ;
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} kind ;
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/*
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*the specificity of the selector
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*that matched this statement.
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*This is only used by the cascading
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*order determination algorithm.
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*/
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gulong specificity ;
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/*
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*the style sheet that contains
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*this css statement.
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*/
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CRStyleSheet *parent_sheet ;
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CRStatement *next ;
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CRStatement *prev ;
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CRParsingLocation location ;
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/**
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*a custom pointer useable by
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*applications that use libcroco.
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*libcroco itself will never modify
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*this pointer.
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*/
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gpointer app_data ;
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/**
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*a custom pointer used
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*by the upper layers of libcroco.
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*application should never use this
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*pointer.
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*/
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gpointer croco_data ;
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} ;
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gboolean
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cr_statement_does_buf_parses_against_core (const guchar *a_buf,
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enum CREncoding a_encoding) ;
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CRStatement *
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cr_statement_parse_from_buf (const guchar *a_buf,
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enum CREncoding a_encoding) ;
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CRStatement*
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cr_statement_new_ruleset (CRStyleSheet *a_sheet,
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CRSelector *a_sel_list,
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CRDeclaration *a_decl_list,
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CRStatement *a_media_rule) ;
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CRStatement *
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cr_statement_ruleset_parse_from_buf (const guchar * a_buf,
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enum CREncoding a_enc) ;
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CRStatement*
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cr_statement_new_at_import_rule (CRStyleSheet *a_container_sheet,
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CRString *a_url,
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GList *a_media_list,
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CRStyleSheet *a_imported_sheet) ;
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CRStatement *
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cr_statement_at_import_rule_parse_from_buf (const guchar * a_buf,
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enum CREncoding a_encoding) ;
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CRStatement *
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cr_statement_new_at_media_rule (CRStyleSheet *a_sheet,
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CRStatement *a_ruleset,
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GList *a_media) ;
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CRStatement *
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cr_statement_at_media_rule_parse_from_buf (const guchar *a_buf,
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enum CREncoding a_enc) ;
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CRStatement *
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cr_statement_new_at_charset_rule (CRStyleSheet *a_sheet,
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CRString *a_charset) ;
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CRStatement *
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cr_statement_at_charset_rule_parse_from_buf (const guchar *a_buf,
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enum CREncoding a_encoding);
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CRStatement *
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cr_statement_new_at_font_face_rule (CRStyleSheet *a_sheet,
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CRDeclaration *a_font_decls) ;
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CRStatement *
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cr_statement_font_face_rule_parse_from_buf (const guchar *a_buf,
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enum CREncoding a_encoding) ;
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CRStatement *
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cr_statement_new_at_page_rule (CRStyleSheet *a_sheet,
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CRDeclaration *a_decl_list,
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CRString *a_name,
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CRString *a_pseudo) ;
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CRStatement *
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cr_statement_at_page_rule_parse_from_buf (const guchar *a_buf,
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enum CREncoding a_encoding) ;
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enum CRStatus
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cr_statement_set_parent_sheet (CRStatement *a_this,
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CRStyleSheet *a_sheet) ;
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enum CRStatus
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cr_statement_get_parent_sheet (CRStatement *a_this,
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CRStyleSheet **a_sheet) ;
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CRStatement *
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cr_statement_append (CRStatement *a_this,
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CRStatement *a_new) ;
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CRStatement*
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cr_statement_prepend (CRStatement *a_this,
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CRStatement *a_new) ;
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CRStatement *
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cr_statement_unlink (CRStatement *a_stmt) ;
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enum CRStatus
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cr_statement_ruleset_set_sel_list (CRStatement *a_this,
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CRSelector *a_sel_list) ;
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enum CRStatus
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cr_statement_ruleset_get_sel_list (CRStatement const *a_this,
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CRSelector **a_list) ;
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enum CRStatus
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cr_statement_ruleset_set_decl_list (CRStatement *a_this,
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CRDeclaration *a_list) ;
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enum CRStatus
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cr_statement_ruleset_get_declarations (CRStatement *a_this,
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CRDeclaration **a_decl_list) ;
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enum CRStatus
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cr_statement_ruleset_append_decl2 (CRStatement *a_this,
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CRString *a_prop, CRTerm *a_value) ;
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enum CRStatus
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cr_statement_ruleset_append_decl (CRStatement *a_this,
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CRDeclaration *a_decl) ;
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enum CRStatus
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cr_statement_at_import_rule_set_imported_sheet (CRStatement *a_this,
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CRStyleSheet *a_sheet) ;
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enum CRStatus
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cr_statement_at_import_rule_get_imported_sheet (CRStatement *a_this,
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CRStyleSheet **a_sheet) ;
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enum CRStatus
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cr_statement_at_import_rule_set_url (CRStatement *a_this,
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CRString *a_url) ;
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enum CRStatus
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cr_statement_at_import_rule_get_url (CRStatement const *a_this,
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CRString **a_url) ;
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gint
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cr_statement_at_media_nr_rules (CRStatement const *a_this) ;
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CRStatement *
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cr_statement_at_media_get_from_list (CRStatement *a_this, int itemnr) ;
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enum CRStatus
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cr_statement_at_page_rule_set_sel (CRStatement *a_this,
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CRSelector *a_sel) ;
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enum CRStatus
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cr_statement_at_page_rule_get_sel (CRStatement const *a_this,
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CRSelector **a_sel) ;
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enum CRStatus
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cr_statement_at_page_rule_set_declarations (CRStatement *a_this,
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CRDeclaration *a_decl_list) ;
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enum CRStatus
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cr_statement_at_page_rule_get_declarations (CRStatement *a_this,
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CRDeclaration **a_decl_list) ;
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enum CRStatus
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cr_statement_at_charset_rule_set_charset (CRStatement *a_this,
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CRString *a_charset) ;
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enum CRStatus
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cr_statement_at_charset_rule_get_charset (CRStatement const *a_this,
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CRString **a_charset) ;
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enum CRStatus
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cr_statement_at_font_face_rule_set_decls (CRStatement *a_this,
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CRDeclaration *a_decls) ;
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enum CRStatus
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cr_statement_at_font_face_rule_get_decls (CRStatement *a_this,
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CRDeclaration **a_decls) ;
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enum CRStatus
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cr_statement_at_font_face_rule_add_decl (CRStatement *a_this,
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CRString *a_prop,
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CRTerm *a_value) ;
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gchar *
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cr_statement_to_string (CRStatement const * a_this, gulong a_indent) ;
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gchar*
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cr_statement_list_to_string (CRStatement const *a_this, gulong a_indent) ;
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void
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cr_statement_dump (CRStatement const *a_this, FILE *a_fp, gulong a_indent) ;
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void
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cr_statement_dump_ruleset (CRStatement const * a_this, FILE * a_fp,
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glong a_indent) ;
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void
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cr_statement_dump_font_face_rule (CRStatement const * a_this,
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FILE * a_fp,
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glong a_indent) ;
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void
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cr_statement_dump_page (CRStatement const * a_this, FILE * a_fp,
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gulong a_indent) ;
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void
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cr_statement_dump_media_rule (CRStatement const * a_this,
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FILE * a_fp,
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gulong a_indent) ;
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void
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cr_statement_dump_import_rule (CRStatement const * a_this, FILE * a_fp,
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gulong a_indent) ;
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void
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cr_statement_dump_charset (CRStatement const * a_this, FILE * a_fp,
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gulong a_indent) ;
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gint
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cr_statement_nr_rules (CRStatement const *a_this) ;
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CRStatement *
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cr_statement_get_from_list (CRStatement *a_this, int itemnr) ;
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void
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cr_statement_destroy (CRStatement *a_this) ;
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G_END_DECLS
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#endif /*__CR_STATEMENT_H__*/
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