mirror of
https://github.com/netsurf-browser/netsurf
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1ee32fe962
So that we can eventually navigate around local history by keyboard, add the concept of a history cursor to the local history core window. Signed-off-by: Daniel Silverstone <dsilvers@digital-scurf.org>
152 lines
5.2 KiB
C
152 lines
5.2 KiB
C
/*
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* Copyright 2017 Vincent Sanders <vince@netsurf-browser.org>
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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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#ifndef NETSURF_DESKTOP_LOCAL_HISTORY_H
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#define NETSURF_DESKTOP_LOCAL_HISTORY_H
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#include <stdbool.h>
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#include <stdint.h>
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#include "utils/errors.h"
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#include "netsurf/mouse.h"
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struct core_window_callback_table;
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struct redraw_context;
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struct nsurl;
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struct rect;
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struct local_history_session;
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struct browser_window;
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/**
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* Initialise the local history.
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*
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* This iterates through the history object of a browser window and
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* creates tree of visited pages with thumbnails which may be selected
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* to cause navigation.
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*
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* This must be called before any other local_history_* function.
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*
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* \param[in] cw_t Callback table for core_window containing the treeview.
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* \param[in] core_window_handle The core_window in which the treeview is shown.
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* \param[in] bw browser window to show history of.
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* \param[out] session The created local history session context.
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* \return NSERROR_OK on success and session set, appropriate error code otherwise
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*/
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nserror local_history_init(struct core_window_callback_table *cw_t,
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void *core_window_handle,
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struct browser_window *bw,
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struct local_history_session **session);
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/**
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* Finalise the local history.
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*
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* This destroys the local history view and the local history module's
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* internal data. After calling this if local history is required again,
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* local_history_init must be called to create a new session.
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*
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* \param session The local history session to finalise.
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* \return NSERROR_OK on success and session freed appropriate error otherwise
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*/
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nserror local_history_fini(struct local_history_session *session);
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/**
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* Redraw the local history.
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*
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* Causes the local history viewer to issue plot operations to redraw
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* the specified area of the viewport.
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*
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* \param[in] session The local history session context.
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* \param[in] x X coordinate to render history at
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* \param[in] y Y coordinate to render history at
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* \param[in] clip Current clip rectangle (wrt tree origin)
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* \param[in] ctx Current redraw context
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*/
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nserror local_history_redraw(struct local_history_session *session, int x, int y, struct rect *clip, const struct redraw_context *ctx);
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/**
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* Handles all kinds of mouse action
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*
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* \param[in] session The local history session context.
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* \param[in] mouse The current mouse state
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* \param[in] x The current mouse X coordinate
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* \param[in] y The current mouse Y coordinate
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* \return NSERROR_OK if mouse action was processed.
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* NSERROR_NOT_FOUND if nothing under the pointer where it was clicked
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* NSERROR_NOT_IMPLEMENTED if the action was not processed.
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* NSERROR_PERMISSION if the clicked item was the current page
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*/
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nserror local_history_mouse_action(struct local_history_session *session, enum browser_mouse_state mouse, int x, int y);
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/**
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* Key press handling.
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*
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* \param[in] session The local history session context.
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* \param[in] key The ucs4 character codepoint
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* \return true if the keypress is dealt with, false otherwise.
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*/
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bool local_history_keypress(struct local_history_session *session, uint32_t key);
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/**
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* Change the browser window to draw local history for.
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*
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* \param[in] session The local history session context.
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* \param bw browser window to show history of.
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* \return NSERROR_OK or appropriate error code.
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*/
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nserror local_history_set(struct local_history_session *session, struct browser_window *bw);
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/**
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* get size of local history content area.
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*
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* \param[in] session The local history session context.
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* \param[out] width on sucessful return the width of the localhistory content
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* \param[out] height on sucessful return the height of the localhistory content
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* \return NSERROR_OK or appropriate error code.
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*/
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nserror local_history_get_size(struct local_history_session *session, int *width, int *height);
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/**
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* get url of entry at position in local history content area.
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*
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* \todo the returned url should be a referenced nsurl.
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*
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* \param[in] session The local history session context.
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* \param[in] x The x coordinate to get url of.
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* \param[in] y The y coordinate to get url of.
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* \param[out] url_out referenced url.
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* \return NSERROR_OK and url_out updated or NSERROR_NOT_FOUND if no url at
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* location.
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*/
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nserror local_history_get_url(struct local_history_session *session, int x, int y, struct nsurl **url_out);
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/**
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* Scroll the local history window to ensure the current cursor is shown.
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*
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* \param session The local history session
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*/
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nserror local_history_scroll_to_cursor(struct local_history_session *session);
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#endif
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