mirror of
https://github.com/netsurf-browser/netsurf
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612100bd1a
The local history interface now reports errors to its callers isntead of inconsistantly waning the user occasionally on error. The documentation comemhts were also updated to match reality
260 lines
7.8 KiB
C
260 lines
7.8 KiB
C
/*
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* Copyright 2006 James Bursa <bursa@users.sourceforge.net>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* NetSurf 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 General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** \file
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* Browser history tree (interface).
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*/
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#ifndef _NETSURF_DESKTOP_BROWSER_HISTORY_H_
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#define _NETSURF_DESKTOP_BROWSER_HISTORY_H_
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#include <stdbool.h>
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#include <libwapcaplet/libwapcaplet.h>
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#include "utils/errors.h"
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struct hlcache_handle;
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struct browser_window;
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struct history_entry;
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struct redraw_context;
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/**
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* Create a new history tree for a browser window window.
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*
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* \param bw browser window to create history for.
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*
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* \return NSERROR_OK or appropriate error otherwise
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*/
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nserror browser_window_history_create(struct browser_window *bw);
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/**
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* Clone a bw's history tree for new bw
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*
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* \param existing browser window with history to clone.
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* \param clone browser window to make cloned history for.
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*
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* \return NSERROR_OK or appropriate error otherwise
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*/
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nserror browser_window_history_clone(const struct browser_window *existing,
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struct browser_window *clone);
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/**
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* Insert a url into the history tree.
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*
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* \param bw browser window with history object
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* \param content content to add to history
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* \param frag_id fragment identifier, or NULL.
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* \return NSERROR_OK or error code on faliure.
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*
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* The page is added after the current entry and becomes current.
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*/
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nserror browser_window_history_add(struct browser_window *bw,
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struct hlcache_handle *content, lwc_string *frag_id);
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/**
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* Update the thumbnail for the current entry.
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*
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* \param bw The browser window to update the history within.
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* \param content content for current entry
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* \return NSERROR_OK or error code on faliure.
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*/
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nserror browser_window_history_update(struct browser_window *bw,
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struct hlcache_handle *content);
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/**
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* Free a history structure.
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*
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* \param bw The browser window to destroy the history within.
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*/
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void browser_window_history_destroy(struct browser_window *bw);
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/**
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* Go back in the history.
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*
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* \param bw A browser window to navigate the history in.
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* \param new_window whether to open in new window.
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* \return NSERROR_OK or error code on faliure.
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*/
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nserror browser_window_history_back(struct browser_window *bw, bool new_window);
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/**
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* Go forward in the history.
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*
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* \param bw A browser window to navigate the history in.
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* \param new_window whether to open in new window.
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* \return NSERROR_OK or error code on faliure.
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*/
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nserror browser_window_history_forward(struct browser_window *bw, bool new_window);
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/**
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* Check whether it is pssible to go back in the history.
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*
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* \param bw A browser window to check the history navigation in.
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* \return true if the history can go back, false otherwise
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*/
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bool browser_window_history_back_available(struct browser_window *bw);
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/**
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* Check whether it is pssible to go forwards in the history.
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*
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* \param bw A browser window to check the history navigation in.
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* \return true if the history can go forwards, false otherwise
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*/
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bool browser_window_history_forward_available(struct browser_window *bw);
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/**
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* Get the dimensions of a history.
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*
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* \param bw browser window with history object.
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* \param width updated to width
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* \param height updated to height
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*/
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void browser_window_history_size(struct browser_window *bw,
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int *width, int *height);
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/**
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* Redraw all of a history area.
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*
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* \param bw browser window with history object.
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* \param ctx current redraw context
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*/
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bool browser_window_history_redraw(struct browser_window *bw,
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const struct redraw_context *ctx);
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/**
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* Redraw part of a history area.
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*
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* \param bw browser window with history object.
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* \param x0 left X co-ordinate of redraw area
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* \param y0 top Y co-ordinate of redraw area
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* \param x1 right X co-ordinate of redraw area
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* \param y1 lower Y co-ordinate of redraw area
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* \param x start X co-ordinate on plot canvas
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* \param y start Y co-ordinate on plot canvas
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* \param ctx current redraw context
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*/
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bool browser_window_history_redraw_rectangle(struct browser_window *bw,
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int x0, int y0, int x1, int y1, int x, int y,
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const struct redraw_context *ctx);
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/**
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* Handle a mouse click in a history.
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*
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* \param bw browser window containing history
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* \param x click coordinate
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* \param y click coordinate
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* \param new_window open a new window instead of using bw
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* \return true if action was taken, false if click was not on an entry
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*/
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bool browser_window_history_click(struct browser_window *bw,
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int x, int y, bool new_window);
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/**
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* Determine the URL of the entry at a position.
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*
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* \param bw browser window containing history
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* \param x x coordinate.
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* \param y y coordinate.
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* \return URL, or 0 if no entry at (x, y)
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*/
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const char *browser_window_history_position_url(struct browser_window *bw,
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int x, int y);
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/**
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* Callback function type for history enumeration
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*
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* \param bw The browser window with history being enumerated
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* \param x0, y0, x1, y1 Coordinates of entry in history tree view
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* \param entry Current history entry
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* \return true to continue enumeration, false to cancel enumeration
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*/
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typedef bool (*browser_window_history_enumerate_cb)(
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const struct browser_window *bw,
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int x0, int y0, int x1, int y1,
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const struct history_entry *entry, void *user_data);
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/**
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* Enumerate all entries in the history.
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* Do not change the history while it is being enumerated.
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*
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* \param bw The browser window to enumerate history of
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* \param cb callback function
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* \param user_data context pointer passed to cb
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*/
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void browser_window_history_enumerate(const struct browser_window *bw,
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browser_window_history_enumerate_cb cb, void *user_data);
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/**
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* Enumerate all entries that will be reached by the 'forward' button
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*
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* \param bw The browser window to enumerate history of
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* \param cb The callback function
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* \param user_data Data passed to the callback
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*/
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void browser_window_history_enumerate_forward(const struct browser_window *bw,
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browser_window_history_enumerate_cb cb, void *user_data);
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/**
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* Enumerate all entries that will be reached by the 'back' button
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*
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* \param bw The browser window to enumerate history of
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* \param cb The callback function
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* \param user_data Data passed to the callback
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*/
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void browser_window_history_enumerate_back(const struct browser_window *bw,
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browser_window_history_enumerate_cb cb, void *user_data);
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/**
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* Returns the URL to a history entry
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*
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* \param entry the history entry to retrieve the URL from
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* \return the URL
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*/
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const char *browser_window_history_entry_get_url(
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const struct history_entry *entry);
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/**
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* Returns the URL to a history entry
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*
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* \param entry the history entry to retrieve the fragment id from
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* \return the fragment id
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*/
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const char *browser_window_history_entry_get_fragment_id(
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const struct history_entry *entry);
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/**
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* Returns the title of a history entry
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*
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* \param entry the history entry to retrieve the title from
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* \return the title
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*/
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const char *browser_window_history_entry_get_title(
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const struct history_entry *entry);
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/**
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* Navigate to specified history entry, optionally in new window
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*
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* \param bw browser window
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* \param entry entry to open
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* \param new_window open entry in new window
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* \return NSERROR_OK or error code on faliure.
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*/
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nserror browser_window_history_go(struct browser_window *bw,
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struct history_entry *entry, bool new_window);
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#endif
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