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/* -*- Mode: C; indent-tabs-mode: ni; c-basic-offset: 8 -*- */
/*
* This file is part of The Croco Library
*
* Copyright (C) 2002-2003 Dodji Seketeli <dodji@seketeli.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2.1 of the GNU Lesser General Public
* License as published by the Free Software Foundation.
*
* This program 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 Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
#include "cr-doc-handler.h"
#include <string.h>
/**
*@file
*The definition of the CRDocHandler class.
*Contains methods to instantiate, destroy,
*and initialyze instances of #CRDocHandler
*to custom values.
*/
struct _CRDocHandlerPriv {
/**
*This pointer is to hold an application parsing context.
*For example, it used by the Object Model parser to
*store it parsing context. #CRParser does not touch it, but
*#CROMParser does. #CROMParser allocates this pointer at
*the beginning of the css document, and frees it at the end
*of the document.
*/
gpointer context;
/**
*The place where #CROMParser puts the result of its parsing, if
*any.
*/
gpointer result;
};
/**
*Constructor of #CRDocHandler.
*@return the newly built instance of
*#CRDocHandler
*/
CRDocHandler *
cr_doc_handler_new (void)
{
CRDocHandler *result = NULL;
result = g_try_malloc (sizeof (CRDocHandler));
g_return_val_if_fail (result, NULL);
memset (result, 0, sizeof (CRDocHandler));
result->priv = g_try_malloc (sizeof (CRDocHandlerPriv));
if (!result->priv) {
cr_utils_trace_info ("Out of memory exception");
g_free (result);
return NULL;
}
cr_doc_handler_ref (result);
cr_doc_handler_set_default_sac_handler (result);
return result;
}
/**
*Returns the private parsing context.
*The private parsing context is used by libcroco only.
*@param a_this the current instance of #CRDocHandler.
*@param a_ctxt out parameter. The new parsing context.
*@return CR_OK upon successfull completion, an error code otherwise.
*@return the parsing context, or NULL if an error occured.
*/
enum CRStatus
cr_doc_handler_get_ctxt (CRDocHandler * a_this, gpointer * a_ctxt)
{
g_return_val_if_fail (a_this && a_this->priv, CR_BAD_PARAM_ERROR);
*a_ctxt = a_this->priv->context;
return CR_OK;
}
/**
*Sets the private parsing context.
*This is used by libcroco only.
*@param a_this the current instance of #CRDocHandler
*@param a_ctxt a pointer to the parsing context.
*@return CR_OK upon successfull completion, an error code otherwise.
*/
enum CRStatus
cr_doc_handler_set_ctxt (CRDocHandler * a_this, gpointer a_ctxt)
{
g_return_val_if_fail (a_this && a_this->priv, CR_BAD_PARAM_ERROR);
a_this->priv->context = a_ctxt;
return CR_OK;
}
/**
*Returns the private parsing result.
*The private parsing result is used by libcroco only.
*@param a_this the current instance of #CRDocHandler
*@param a_result out parameter. The returned result.
*@return CR_OK upon successfull completion, an error code otherwise.
*/
enum CRStatus
cr_doc_handler_get_result (CRDocHandler * a_this, gpointer * a_result)
{
g_return_val_if_fail (a_this && a_this->priv, CR_BAD_PARAM_ERROR);
*a_result = a_this->priv->result;
return CR_OK;
}
/**
*Sets the private parsing context.
*This is used by libcroco only.
*@param a_this the current instance of #CRDocHandler
*@param a_result the new result.
*@return CR_OK upon successfull completion, an error code otherwise.
*/
enum CRStatus
cr_doc_handler_set_result (CRDocHandler * a_this, gpointer a_result)
{
g_return_val_if_fail (a_this && a_this->priv, CR_BAD_PARAM_ERROR);
a_this->priv->result = a_result;
return CR_OK;
}
/**
*Sets the sac handlers contained in the current
*instance of DocHandler to the default handlers.
*For the time being the default handlers are
*test handlers. This is expected to change in a
*near future, when the libcroco gets a bit debugged.
*
*@param a_this a pointer to the current instance of #CRDocHandler.
*@return CR_OK upon successfull completion, an error code otherwise.
*/
enum CRStatus
cr_doc_handler_set_default_sac_handler (CRDocHandler * a_this)
{
g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR);
a_this->start_document = NULL;
a_this->end_document = NULL;
a_this->import_style = NULL;
a_this->namespace_declaration = NULL;
a_this->comment = NULL;
a_this->start_selector = NULL;
a_this->end_selector = NULL;
a_this->property = NULL;
a_this->start_font_face = NULL;
a_this->end_font_face = NULL;
a_this->start_media = NULL;
a_this->end_media = NULL;
a_this->start_page = NULL;
a_this->end_page = NULL;
a_this->ignorable_at_rule = NULL;
a_this->error = NULL;
a_this->unrecoverable_error = NULL;
return CR_OK;
}
/**
*Increases the reference count of the doc handler
*@param a_this the current instance of #CRDocHandler.
*/
void
cr_doc_handler_ref (CRDocHandler * a_this)
{
g_return_if_fail (a_this);
a_this->ref_count++;
}
/**
*Decreases the ref count of the current instance of #CRDocHandler.
*If the ref count reaches '0' then, destroys the instance.
*@param a_this the currrent instance of #CRDocHandler.
*@return TRUE if the instance as been destroyed, FALSE otherwise.
*/
gboolean
cr_doc_handler_unref (CRDocHandler * a_this)
{
g_return_val_if_fail (a_this, FALSE);
if (a_this->ref_count > 0) {
a_this->ref_count--;
}
if (a_this->ref_count == 0) {
cr_doc_handler_destroy (a_this);
return TRUE;
}
return FALSE;
}
/**
*The destructor of the #CRDocHandler class.
*@param a_this the instance of #CRDocHandler to
*destroy.
*/
void
cr_doc_handler_destroy (CRDocHandler * a_this)
{
g_return_if_fail (a_this);
if (a_this->priv) {
g_free (a_this->priv);
a_this->priv = NULL;
}
g_free (a_this);
}
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