mirror of
https://github.com/netsurf-browser/netsurf
synced 2025-01-18 16:49:18 +03:00
8c2cfecfb5
Previously content handler debugging features were accessed by global variables. This allows the setting of debugging parameters via a content API giving per content control over debugging features. Currently only used by the html content handler to toggle global redraw debugging.
687 lines
20 KiB
C
687 lines
20 KiB
C
/*
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* Copyright 2003 Phil Mellor <monkeyson@users.sourceforge.net>
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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 window creation and manipulation (interface).
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*/
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#ifndef _NETSURF_DESKTOP_BROWSER_H_
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#define _NETSURF_DESKTOP_BROWSER_H_
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#include <stdbool.h>
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#include <stdio.h>
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#include "utils/errors.h"
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#include "desktop/plot_style.h"
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#include "desktop/frame_types.h"
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#include "desktop/mouse.h"
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struct browser_window;
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struct hlcache_handle;
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struct gui_window;
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struct history;
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struct selection;
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struct fetch_multipart_data;
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struct form_control;
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struct nsurl;
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struct rect;
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struct redraw_context;
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enum content_debug;
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typedef enum {
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DRAGGING_NONE,
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DRAGGING_SELECTION,
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DRAGGING_PAGE_SCROLL,
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DRAGGING_FRAME,
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DRAGGING_SCR_X,
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DRAGGING_SCR_Y,
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DRAGGING_CONTENT_SCROLLBAR,
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DRAGGING_OTHER
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} browser_drag_type;
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typedef enum {
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BW_EDITOR_NONE = 0, /**< No selection, no editing */
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BW_EDITOR_CAN_COPY = (1 << 0), /**< Have selection */
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BW_EDITOR_CAN_CUT = (1 << 1), /**< Selection not read-only */
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BW_EDITOR_CAN_PASTE = (1 << 2) /**< Can paste, input */
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} browser_editor_flags;
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typedef enum {
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BW_SCROLLING_AUTO,
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BW_SCROLLING_YES,
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BW_SCROLLING_NO
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} browser_scrolling;
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/** flags to browser_window_create */
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enum browser_window_create_flags {
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/** No flags set */
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BW_CREATE_NONE = 0,
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/** this will form a new history node (don't set for back/reload/etc) */
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BW_CREATE_HISTORY = (1 << 0),
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/** New gui_window to be tab in same window as "existing" gui_window */
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BW_CREATE_TAB = (1 << 1),
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/** New gui_window to be clone of "existing" gui_window */
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BW_CREATE_CLONE = (1 << 2),
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/** Window not opened by user interaction (e.g. JS popup)
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*
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* rfc2965:
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* A transaction is verifiable if the user, or a
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* user-designated agent, has the option to review
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* the request-URI prior to its use in the transaction.
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* A transaction is unverifiable if the user does not
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* have that option.
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*/
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BW_CREATE_UNVERIFIABLE = (1 << 3),
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};
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/** flags to browser_window_navigate */
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enum browser_window_nav_flags {
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/** No flags set */
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BW_NAVIGATE_NONE = 0,
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/** this will form a new history node (don't set for back/reload/etc) */
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BW_NAVIGATE_HISTORY = (1 << 0),
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/** download rather than render the uri */
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BW_NAVIGATE_DOWNLOAD = (1 << 1),
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/** Transation not caused by user interaction (e.g. JS-caused)
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*
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* rfc2965:
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* A transaction is verifiable if the user, or a
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* user-designated agent, has the option to review
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* the request-URI prior to its use in the transaction.
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* A transaction is unverifiable if the user does not
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* have that option.
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*/
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BW_NAVIGATE_UNVERIFIABLE = (1 << 2)
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};
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/**
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* Page features at a specific spatial location.
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*/
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struct browser_window_features {
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/** URL of a link or NULL. */
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struct nsurl *link;
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/** Object at position or NULL. */
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struct hlcache_handle *object;
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/** handle of top level content. */
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struct hlcache_handle *main;
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/** type of form feature. */
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enum {
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CTX_FORM_NONE,
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CTX_FORM_TEXT,
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CTX_FORM_FILE
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} form_features;
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};
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/**
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* Create and open a new root browser window with the given page.
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*
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* \param flags Flags to control operation
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* \param url URL to fetch in the new window or NULL for blank
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* \param referrer The referring uri or NULL if none
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* \param existing The an existing bw or NULL, required for some flags.
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* \param bw Updated to created browser window or untouched on error.
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* \return NSERROR_OK, or appropriate error otherwise.
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*/
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nserror browser_window_create(enum browser_window_create_flags flags,
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struct nsurl *url, struct nsurl *referrer,
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struct browser_window *existing,
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struct browser_window **bw);
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/**
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* Start fetching a page in a browser window.
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*
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* \param bw browser window
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* \param url URL to start fetching
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* \param flags Flags to control operation
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* \param referrer The referring uri or NULL if none
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* \param post_urlenc url encoded post data or NULL if none
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* \param post_multipart multipart post data or NULL if none
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* \param parent Parent content or NULL if none
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*
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* Any existing fetches in the window are aborted.
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*
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* If post_urlenc and post_multipart are NULL the url is fetched using
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* GET rather than POST.
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*
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*/
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nserror browser_window_navigate(struct browser_window *bw,
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struct nsurl *url,
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struct nsurl *referrer,
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enum browser_window_nav_flags flags,
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char *post_urlenc,
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struct fetch_multipart_data *post_multipart,
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struct hlcache_handle *parent);
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/**
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* Return true if a browser window can navigate upwards.
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*
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* \param bw the browser window to test.
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* \return true if navigation up is possible otherwise false.
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*/
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bool browser_window_up_available(struct browser_window *bw);
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/**
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* Navigate to a browser_window's parent URL.
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*
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* \param bw browser window
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* \param new_window whether to open parent in a new window, or existing
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*/
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nserror browser_window_navigate_up(struct browser_window *bw, bool new_window);
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/**
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* Get a browser window's URL.
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*
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* \param bw browser window
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* \return pointer to nsurl. Doesn't create a ref for caller.
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*
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* \note guaranteed to return a valid nsurl ptr, never returns NULL.
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*/
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struct nsurl* browser_window_get_url(struct browser_window *bw);
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/**
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* Get the title of a browser_window.
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*
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* \param bw The browser window.
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*/
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const char* browser_window_get_title(struct browser_window *bw);
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/**
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* Get a browser window's history object.
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*
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* \param bw browser window
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* \return pointer browser window's history object
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*
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* Clients need history object to make use of the history_* functions.
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*/
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struct history * browser_window_get_history(struct browser_window *bw);
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/**
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* Get a browser window's content extents.
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*
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* \param bw browser window
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* \param scaled whether to apply current browser window scale
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* \param width updated to content width extent in px
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* \param width updated to content height extent in px
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* \return NSERROR_OK, or appropriate error otherwise.
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*/
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nserror browser_window_get_extents(struct browser_window *bw, bool scaled,
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int *width, int *height);
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/**
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* Find out if a browser window is currently showing a content.
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*
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* \param bw browser window
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* \return true iff browser window is showing a content, else false.
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*/
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bool browser_window_has_content(struct browser_window *bw);
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/**
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* Get a cache handle for the content within a browser window.
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*/
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struct hlcache_handle *browser_window_get_content(struct browser_window *bw);
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/**
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* Set the dimensions of the area a browser window occupies
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*
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* \param bw The browser window to set dimensions of
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* \param width Width in pixels
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* \param height Height in pixels
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*/
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void browser_window_set_dimensions(struct browser_window *bw,
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int width, int height);
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/**
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* Redraw browser window, set extent to content, and update title.
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*
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* \param bw browser_window
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* \param scroll_to_top move view to top of page
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*/
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void browser_window_update(struct browser_window *bw, bool scroll_to_top);
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/**
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* update an area of a browser window.
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*
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* \param bw The browser window to update.
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* \param rect The area to redraw
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*/
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void browser_window_update_box(struct browser_window *bw, struct rect *rect);
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/**
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* Stop all fetching activity in a browser window.
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*
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* \param bw The browser window to stop activity in.
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*/
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void browser_window_stop(struct browser_window *bw);
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/**
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* Reload the page in a browser window.
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*
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* \param bw browser window
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* \param all whether to reload all objects associated with the page
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*/
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void browser_window_reload(struct browser_window *bw, bool all);
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/**
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* Close and destroy a browser window.
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*
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* \param bw browser window
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*/
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void browser_window_destroy(struct browser_window *bw);
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/**
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* Reformat a browser window contents to a new width or height.
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*
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* \param bw the browser window to reformat
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* \param width new width
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* \param height new height
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*/
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void browser_window_reformat(struct browser_window *bw, bool background,
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int width, int height);
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/**
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* Sets the scale of a browser window.
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*
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* \param bw The browser window to scale.
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* \param scale The new scale.
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* \param all Scale all windows in the tree (ie work up as well as down)
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*/
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void browser_window_set_scale(struct browser_window *bw, float scale, bool all);
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/**
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* Gets the scale of a browser window
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*
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* \param bw The browser window to get the scale of.
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* \return The scale of teh window.
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*/
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float browser_window_get_scale(struct browser_window *bw);
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/**
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* Get access to any page features at the given coordinates.
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*
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* Fetches page features like content, link URLs and objects (images)
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* at the specified co-ordinates within the browsing context.
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*
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* Fields within the supplied features structure are updated with
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* pointers to any relevent content, or set to NULL if none.
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*
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* \param[in] bw browser window to examine.
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* \param[in] x x-coordinate of point of interest
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* \param[in] y y-coordinate of point of interest
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* \param[out] data Feature structure to update.
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* \return NSERROR_OK or appropriate error code on faliure.
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*/
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nserror browser_window_get_features(struct browser_window *bw,
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int x, int y, struct browser_window_features *data);
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/**
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* Send a scroll request to a browser window at a particular point. The
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* 'deepest' scrollable object which can be scrolled in the requested
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* direction at the given point will consume the scroll.
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*
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* \param bw browser window to look inside
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* \param x x-coordinate of point of interest
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* \param y y-coordinate of point of interest
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* \param scrx number of px try to scroll something in x direction
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* \param scry number of px try to scroll something in y direction
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* \return true iff scroll request has been consumed
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*/
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bool browser_window_scroll_at_point(struct browser_window *bw,
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int x, int y, int scrx, int scry);
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/**
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* Drop a file onto a browser window at a particular point, or determine if a
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* file may be dropped onto the content at given point.
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*
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* \param bw browser window to look inside
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* \param x x-coordinate of point of interest
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* \param y y-coordinate of point of interest
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* \param file path to file to be dropped, or NULL to know if drop allowed
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* \return true iff file drop has been handled, or if drop possible (NULL file)
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*/
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bool browser_window_drop_file_at_point(struct browser_window *bw,
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int x, int y, char *file);
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/**
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* set filename on form control.
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*
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* \param bw browser window to look inside.
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* \param gadget form control.
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* \param fn filename to set.
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*/
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void browser_window_set_gadget_filename(struct browser_window *bw,
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struct form_control *gadget, const char *fn);
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/**
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* Update URL bar for a given browser window to bw's content's URL
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*
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* \param bw Browser window to update URL bar for.
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*/
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nserror browser_window_refresh_url_bar(struct browser_window *bw);
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/**
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* Handle mouse clicks in a browser window.
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*
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* \param bw browser window
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* \param mouse state of mouse buttons and modifier keys
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* \param x coordinate of mouse
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* \param y coordinate of mouse
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*/
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void browser_window_mouse_click(struct browser_window *bw,
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browser_mouse_state mouse, int x, int y);
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/**
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* Handle non-click mouse action in a browser window. (drag ends, movements)
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*
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* \param bw browser window
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* \param mouse state of mouse buttons and modifier keys
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* \param x coordinate of mouse
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* \param y coordinate of mouse
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*/
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void browser_window_mouse_track(struct browser_window *bw,
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browser_mouse_state mouse, int x, int y);
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/**
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* Locate a browser window in the specified stack according.
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*
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* \param bw the browser_window to search all relatives of
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* \param target the target to locate
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* \param mouse The current mouse state
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* \return The browser window the mouse is in
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*/
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struct browser_window *browser_window_find_target(
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struct browser_window *bw, const char *target,
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browser_mouse_state mouse);
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/**
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* Cause the frontends reformat entry to be called in safe context.
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*
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* The browser_window_reformat call cannot safely be called from some
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* contexts, this call allows for the reformat to happen from a safe
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* top level context.
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*
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* The callback is frontend provided as the context information (size
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* etc.) about the windowing toolkit is only available to the
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* frontend.
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*/
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nserror browser_window_schedule_reformat(struct browser_window *bw);
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void browser_select_menu_callback(void *client_data,
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int x, int y, int width, int height);
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/**
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* Redraw a rectangular region of a browser window.
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*
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* \param bw browser window to be redrawn
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* \param x x co-ord of top-left
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* \param y y co-ord of top-left
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* \param width width of rectangle
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* \param height height of rectangle
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*/
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void browser_window_redraw_rect(struct browser_window *bw, int x, int y,
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int width, int height);
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/**
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* Change the shape of the mouse pointer
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*
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* \param bw Browser window to set shape in
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* \param shape The pointer shape to use
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*/
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void browser_window_set_pointer(struct browser_window *bw,
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browser_pointer_shape shape);
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/**
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* Start drag scrolling the contents of the browser window
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*
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* \param bw browser window
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* \param x x ordinate of initial mouse position
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* \param y y ordinate
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*/
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void browser_window_page_drag_start(struct browser_window *bw, int x, int y);
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/**
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* Check availability of Back action for a given browser window
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*
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* \param bw browser window
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* \return true if Back action is available
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*/
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bool browser_window_back_available(struct browser_window *bw);
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/**
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* Check availability of Forward action for a given browser window
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*
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* \param bw browser window
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* \return true if Forward action is available
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*/
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bool browser_window_forward_available(struct browser_window *bw);
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/**
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* Check availability of Reload action for a given browser window
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*
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* \param bw browser window
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* \return true if Reload action is available
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*/
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bool browser_window_reload_available(struct browser_window *bw);
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/**
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* Check availability of Stop action for a given browser window
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*
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* \param bw browser window
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* \return true if Stop action is available
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*/
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bool browser_window_stop_available(struct browser_window *bw);
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/**
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* Redraw an area of a window.
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*
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* Calls the redraw function for the content.
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*
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* \param bw The window to redraw
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* \param x coordinate for top-left of redraw
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* \param y coordinate for top-left of redraw
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* \param clip clip rectangle coordinates
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* \param ctx redraw context
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* \return true if successful, false otherwise
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*
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* The clip rectangle is guaranteed to be filled to its extents, so there is
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* no need to render a solid background first.
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*
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* x, y and clip are coordinates from the top left of the canvas area.
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*
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* The top left corner of the clip rectangle is (x0, y0) and
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* the bottom right corner of the clip rectangle is (x1, y1).
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* Units for x, y and clip are pixels.
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*/
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bool browser_window_redraw(struct browser_window *bw, int x, int y,
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const struct rect *clip, const struct redraw_context *ctx);
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/**
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* Check whether browser window is ready for redraw
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*
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* \param bw The window to redraw
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* \return true if browser window is ready for redraw
|
|
*/
|
|
bool browser_window_redraw_ready(struct browser_window *bw);
|
|
|
|
/**
|
|
* Get the position of the current browser window with respect to the root or
|
|
* parent browser window
|
|
*
|
|
* \param bw browser window to get the position of
|
|
* \param root true if we want position wrt root bw, false if wrt parent bw
|
|
* \param pos_x updated to x position of bw
|
|
* \param pos_y updated to y position of bw
|
|
*/
|
|
void browser_window_get_position(struct browser_window *bw, bool root,
|
|
int *pos_x, int *pos_y);
|
|
|
|
/**
|
|
* Set the position of the current browser window with respect to the parent
|
|
* browser window
|
|
*
|
|
* \param bw browser window to set the position of
|
|
* \param x x position of bw
|
|
* \param y y position of bw
|
|
*/
|
|
void browser_window_set_position(struct browser_window *bw, int x, int y);
|
|
|
|
/**
|
|
* Scroll the browser window to display the passed area
|
|
*
|
|
* \param bw browser window to scroll
|
|
* \param rect area to display
|
|
*/
|
|
void browser_window_scroll_visible(struct browser_window *bw,
|
|
const struct rect *rect);
|
|
|
|
/**
|
|
* Set scroll offsets for a browser window.
|
|
*
|
|
* \param bw The browser window
|
|
* \param x The x scroll offset to set
|
|
* \param y The y scroll offset to set
|
|
*
|
|
* \todo Do we really need this and browser_window_scroll_visible?
|
|
* Ditto for gui_window_* variants.
|
|
*/
|
|
void browser_window_set_scroll(struct browser_window *bw, int x, int y);
|
|
|
|
/**
|
|
* Set drag type for a browser window, and inform front end
|
|
*
|
|
* \param bw browser window to set the type of the current drag for
|
|
* \param type drag type
|
|
* \param rect area pointer may be confined to, during drag, or NULL
|
|
*/
|
|
void browser_window_set_drag_type(struct browser_window *bw,
|
|
browser_drag_type type, const struct rect *rect);
|
|
|
|
/**
|
|
* Get type of any current drag for a browser window
|
|
*
|
|
* \param bw browser window to set the type of the current drag for
|
|
* \return drag type
|
|
*/
|
|
browser_drag_type browser_window_get_drag_type(struct browser_window *bw);
|
|
|
|
/**
|
|
* Check whether browser window can accept a cut/copy/paste, or has a selection
|
|
* that could be saved.
|
|
*
|
|
* \param bw The browser window
|
|
* \return flags indicating editor flags
|
|
*/
|
|
browser_editor_flags browser_window_get_editor_flags(struct browser_window *bw);
|
|
|
|
/**
|
|
* Find out if given browser window content is selectable
|
|
*
|
|
* \param bw browser window to look at
|
|
* \return true iff browser window is selectable
|
|
*/
|
|
bool browser_window_can_select(struct browser_window *bw);
|
|
|
|
/**
|
|
* Get the current selection from a root browser window, ownership passed to
|
|
* caller, who must free() it.
|
|
*
|
|
* \param bw The browser window
|
|
* \return the selected text string, or NULL
|
|
*/
|
|
char * browser_window_get_selection(struct browser_window *bw);
|
|
|
|
/**
|
|
* Find out if given browser window can be searched
|
|
*
|
|
* \param bw browser window to look at
|
|
* \return true iff browser window is searchable
|
|
*/
|
|
bool browser_window_can_search(struct browser_window *bw);
|
|
|
|
/**
|
|
* Find out if a browser window contains a frameset
|
|
*
|
|
* \param bw browser window to look at
|
|
* \return true iff browser window contains a frameset
|
|
*/
|
|
bool browser_window_is_frameset(struct browser_window *bw);
|
|
|
|
/**
|
|
* Get the browser window's scrollbar details.
|
|
*
|
|
* Vertical and horizontal scrollbars may be {YES|NO|AUTO}, although
|
|
* it is entirely up to the front end whether this is implemented.
|
|
* e.g. if the gui toolkit style-guide says all windows must have
|
|
* scrollbars then this API can be ignored.
|
|
*
|
|
* \param bw browser window to look at
|
|
* \param h Updated to indicate horizontal scrollbar type
|
|
* \param h Updated to indicate vertical scrollbar type
|
|
* \return NSERROR_OK, or appropriate error otherwise
|
|
*/
|
|
nserror browser_window_get_scrollbar_type(struct browser_window *bw,
|
|
browser_scrolling *h, browser_scrolling *v);
|
|
|
|
/**
|
|
* Set the DPI of the browser.
|
|
*
|
|
* \param dpi The DPI to set.
|
|
*/
|
|
nserror browser_set_dpi(int dpi);
|
|
|
|
/**
|
|
* Get the browser DPI.
|
|
*
|
|
* \return The DPI in use.
|
|
*/
|
|
int browser_get_dpi(void);
|
|
|
|
/**
|
|
* Dump debug info concerning the browser window's contents to file
|
|
*
|
|
* \param bw The browser window.
|
|
* \param f The file to dump to.
|
|
* \param op The debug operation type to dump.
|
|
* \return NSERROR_OK on success or error code on faliure.
|
|
*/
|
|
nserror browser_window_debug_dump(struct browser_window *bw, FILE *f, enum content_debug op);
|
|
|
|
/**
|
|
* set debug options on a window
|
|
* \param bw The browser window.
|
|
* \param op The debug operation type.
|
|
* \return NSERROR_OK on success or error code on faliure.
|
|
*/
|
|
nserror browser_window_debug(struct browser_window *bw, enum content_debug op);
|
|
|
|
#endif
|