netsurf/desktop/history_core.h

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/*
* Copyright 2006 James Bursa <bursa@users.sourceforge.net>
*
* 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
* Browser history tree (interface).
*/
#ifndef _NETSURF_DESKTOP_HISTORY_H_
#define _NETSURF_DESKTOP_HISTORY_H_
#include <stdbool.h>
struct hlcache_handle;
struct history;
struct browser_window;
struct history_entry;
struct history *history_create(void);
struct history *history_clone(struct history *history);
void history_add(struct history *history, struct hlcache_handle *content,
char *frag_id);
void history_update(struct history *history, struct hlcache_handle *content);
void history_destroy(struct history *history);
void history_back(struct browser_window *bw, struct history *history);
void history_forward(struct browser_window *bw, struct history *history);
bool history_back_available(struct history *history);
bool history_forward_available(struct history *history);
void history_size(struct history *history, int *width, int *height);
bool history_redraw(struct history *history);
bool history_redraw_rectangle(struct history *history,
int x0, int y0, int x1, int y1, int x, int y);
bool history_click(struct browser_window *bw, struct history *history,
int x, int y, bool new_window);
const char *history_position_url(struct history *history, int x, int y);
/**
* Callback function type for history enumeration
*
* \param history history being enumerated
* \param x0, y0, x1, y1 Coordinates of entry in history tree view
* \param entry Current history entry
* \return true to continue enumeration, false to cancel enumeration
*/
typedef bool (*history_enumerate_cb)(const struct history *history, int x0, int y0,
int x1, int y1,
const struct history_entry *entry, void *user_data);
/**
* Enumerate all entries in the history.
* Do not change the history while it is being enumerated.
*
* \param history history to enumerate
* \param cb callback function
* \param user_data context pointer passed to cb
*/
void history_enumerate(const struct history *history, history_enumerate_cb cb, void *user_data);
/**
* Enumerate all entries that will be reached by the 'forward' button
*
* \param history The history object to enumerate in
* \param cb The callback function
* \param user_data Data passed to the callback
*/
void history_enumerate_forward( struct history *history,
history_enumerate_cb cb, void *user_data );
/**
* Enumerate all entries that will be reached by the 'back' button
*
* \param history The history object to enumerate in
* \param cb The callback function
* \param user_data Data passed to the callback
*/
void history_enumerate_back( struct history *history,
history_enumerate_cb cb, void *user_data );
/**
* Returns the URL to a history entry
*
* \param entry the history entry to retrieve the URL from
* \return the URL
*/
const char *history_entry_get_url(const struct history_entry *entry);
/**
* Returns the URL to a history entry
*
* \param entry the history entry to retrieve the fragment id from
* \return the fragment id
*/
const char *history_entry_get_fragment_id(const struct history_entry *entry);
/**
* Returns the title of a history entry
*
* \param entry the history entry to retrieve the title from
* \return the title
*/
const char *history_entry_get_title(const struct history_entry *entry);
/**
* Open a history entry in the specified browser window
*
* \param bw browser window
* \param history history containing entry
* \param entry entry to open
* \param new_window open entry in new window
*/
void history_go(struct browser_window *bw, struct history *history,
struct history_entry *entry, bool new_window);
#endif