netsurf/desktop/download.h
2014-05-08 18:03:27 +01:00

105 lines
2.9 KiB
C

/*
* Copyright 2010 John-Mark Bell <jmb@netsurf-browser.org>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf 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; version 2 of the License.
*
* NetSurf 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* \file desktop/download.h
* \brief Core download context (interface)
*/
#ifndef NETSURF_DESKTOP_DOWNLOAD_H_
#define NETSURF_DESKTOP_DOWNLOAD_H_
#include "utils/errors.h"
struct gui_window;
struct llcache_handle;
struct nsurl;
/** Type of a download context */
typedef struct download_context download_context;
/**
* Create a download context
*
* \param llcache Low-level cache handle for download
* \param parent Parent window, for UI
* \return NSERROR_OK on success, appropriate error otherwise
*
* This must only be called by the core browser window fetch infrastructure.
* Ownership of the download context object created is passed to the frontend.
*/
nserror download_context_create(struct llcache_handle *llcache,
struct gui_window *parent);
/**
* Destroy a download context
*
* \param ctx Context to destroy
*
* Called by the frontend when it has finished with a download context
*/
void download_context_destroy(download_context *ctx);
/**
* Abort a download fetch
*
* \param ctx Context to abort
*
* Called by the frontend to abort a download.
* The context must be destroyed independently.
*/
void download_context_abort(download_context *ctx);
/**
* Retrieve the URL for a download
*
* The caller is borrowing the url reference from the underlying low
* level cache object. If it is used beyond the immediate scope of the
* caller an additional reference should be made.
*
* \param ctx Context to retrieve URL from
* \return URL object
*/
struct nsurl *download_context_get_url(const download_context *ctx);
/**
* Retrieve the MIME type for a download
*
* \param ctx Context to retrieve MIME type from
* \return MIME type string
*/
const char *download_context_get_mime_type(const download_context *ctx);
/**
* Retrieve total byte length of download
*
* \param ctx Context to retrieve byte length from
* \return Total length, in bytes, or 0 if unknown
*/
unsigned long download_context_get_total_length(const download_context *ctx);
/**
* Retrieve the filename for a download
*
* \param ctx Context to retrieve filename from
* \return Filename string
*/
const char *download_context_get_filename(const download_context *ctx);
#endif