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c31c4babe1
netsurf/desktop/browser.c
Vincent Sanders c31c4babe1 Change contextual content retrieval to browser features. 
Update the API which allows frontends to acquire the page features
(images, link urls or form elements) present at the given coordinates
within a browser window.

By making this an explicit browser_window API and using the browser.h
header for the associated data structure with a more appropriate API
naming the usage is much more obvious and contained.

Additionally the link url is now passed around as a nsurl stopping it
being converted from nsurl to text and back again several times.
2014-11-02 15:46:42 +00:00

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/*
* Copyright 2003 Phil Mellor <monkeyson@users.sourceforge.net>
* Copyright 2006 James Bursa <bursa@users.sourceforge.net>
* Copyright 2004 Andrew Timmins <atimmins@blueyonder.co.uk>
* Copyright 2004 John Tytgat <joty@netsurf-browser.org>
* Copyright 2006 Richard Wilson <info@tinct.net>
* Copyright 2008 Michael Drake <tlsa@netsurf-browser.org>
* Copyright 2009 Paul Blokus <paul_pl@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 window creation and manipulation implementation.
*/
#include "utils/config.h"
#include <assert.h>
#include <limits.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <math.h>
#include "utils/corestrings.h"
#include "utils/log.h"
#include "utils/messages.h"
#include "utils/nsurl.h"
#include "utils/utils.h"
#include "utils/utf8.h"
#include "utils/nsoption.h"
#include "content/content.h"
#include "content/fetch.h"
#include "content/hlcache.h"
#include "content/urldb.h"
#include "render/form.h"
#include "render/html.h"
#include "render/box.h"
#include "curl/curl.h"
#include "css/utils.h"
#include "javascript/js.h"
#include "desktop/browser_history.h"
#include "desktop/browser_private.h"
#include "desktop/download.h"
#include "desktop/frames.h"
#include "desktop/global_history.h"
#include "desktop/hotlist.h"
#include "desktop/knockout.h"
#include "desktop/scrollbar.h"
#include "desktop/selection.h"
#include "desktop/plotters.h"
#include "desktop/gui_misc.h"
#include "desktop/gui_window.h"
#include "desktop/gui_internal.h"
/** maximum frame depth */
#define FRAME_DEPTH 8
/**
* Get position of scrollbar widget within browser window.
*
* \param bw The browser window
* \param horizontal Whether to get position of horizontal scrollbar
* \param x Updated to x-coord of top left of scrollbar widget
* \param y Updated to y-coord of top left of scrollbar widget
*/
static inline void browser_window_get_scrollbar_pos(struct browser_window *bw,
bool horizontal, int *x, int *y)
{
if (horizontal) {
*x = 0;
*y = bw->height - SCROLLBAR_WIDTH;
} else {
*x = bw->width - SCROLLBAR_WIDTH;
*y = 0;
}
}
/**
* Get browser window scrollbar widget length
*
* \param bw The browser window
* \param horizontal Whether to get length of horizontal scrollbar
* \return the scrollbar's length
*/
static inline int browser_window_get_scrollbar_len(struct browser_window *bw,
bool horizontal)
{
if (horizontal)
return bw->width - (bw->scroll_y != NULL ? SCROLLBAR_WIDTH : 0);
else
return bw->height;
}
/* exported interface, documented in browser.h */
bool browser_window_redraw(struct browser_window *bw, int x, int y,
const struct rect *clip, const struct redraw_context *ctx)
{
struct redraw_context new_ctx = *ctx;
int width = 0;
int height = 0;
bool plot_ok = true;
content_type content_type;
struct content_redraw_data data;
struct rect content_clip;
if (bw == NULL) {
LOG(("NULL browser window"));
return false;
}
if (bw->current_content == NULL && bw->children == NULL) {
/* Browser window has no content, render blank fill */
ctx->plot->clip(clip);
return ctx->plot->rectangle(clip->x0, clip->y0,
clip->x1, clip->y1,
plot_style_fill_white);
}
/* Browser window has content OR children (frames) */
if ((bw->window != NULL) &&
(ctx->plot->option_knockout)) {
/* Root browser window: start knockout */
knockout_plot_start(ctx, &new_ctx);
}
new_ctx.plot->clip(clip);
/* Handle redraw of any browser window children */
if (bw->children) {
struct browser_window *child;
int cur_child;
int children = bw->rows * bw->cols;
if (bw->window != NULL)
/* Root browser window; start with blank fill */
plot_ok &= new_ctx.plot->rectangle(clip->x0, clip->y0,
clip->x1, clip->y1,
plot_style_fill_white);
/* Loop through all children of bw */
for (cur_child = 0; cur_child < children; cur_child++) {
/* Set current child */
child = &bw->children[cur_child];
/* Get frame edge box in global coordinates */
content_clip.x0 = (x + child->x) * child->scale;
content_clip.y0 = (y + child->y) * child->scale;
content_clip.x1 = content_clip.x0 +
child->width * child->scale;
content_clip.y1 = content_clip.y0 +
child->height * child->scale;
/* Intersect it with clip rectangle */
if (content_clip.x0 < clip->x0)
content_clip.x0 = clip->x0;
if (content_clip.y0 < clip->y0)
content_clip.y0 = clip->y0;
if (clip->x1 < content_clip.x1)
content_clip.x1 = clip->x1;
if (clip->y1 < content_clip.y1)
content_clip.y1 = clip->y1;
/* Skip this frame if it lies outside clip rectangle */
if (content_clip.x0 >= content_clip.x1 ||
content_clip.y0 >= content_clip.y1)
continue;
/* Redraw frame */
plot_ok &= browser_window_redraw(child,
x + child->x, y + child->y,
&content_clip, &new_ctx);
}
/* Nothing else to redraw for browser windows with children;
* cleanup and return */
if (bw->window != NULL && ctx->plot->option_knockout) {
/* Root browser window: knockout end */
knockout_plot_end();
}
return plot_ok;
}
/* Handle browser windows with content to redraw */
content_type = content_get_type(bw->current_content);
if (content_type != CONTENT_HTML && content_type != CONTENT_TEXTPLAIN) {
/* Set render area according to scale */
width = content_get_width(bw->current_content) * bw->scale;
height = content_get_height(bw->current_content) * bw->scale;
/* Non-HTML may not fill viewport to extents, so plot white
* background fill */
plot_ok &= new_ctx.plot->rectangle(clip->x0, clip->y0,
clip->x1, clip->y1, plot_style_fill_white);
}
/* Set up content redraw data */
data.x = x - scrollbar_get_offset(bw->scroll_x);
data.y = y - scrollbar_get_offset(bw->scroll_y);
data.width = width;
data.height = height;
data.background_colour = 0xFFFFFF;
data.scale = bw->scale;
data.repeat_x = false;
data.repeat_y = false;
content_clip = *clip;
if (!bw->window) {
int x0 = x * bw->scale;
int y0 = y * bw->scale;
int x1 = (x + bw->width - ((bw->scroll_y != NULL) ?
SCROLLBAR_WIDTH : 0)) * bw->scale;
int y1 = (y + bw->height - ((bw->scroll_x != NULL) ?
SCROLLBAR_WIDTH : 0)) * bw->scale;
if (content_clip.x0 < x0) content_clip.x0 = x0;
if (content_clip.y0 < y0) content_clip.y0 = y0;
if (x1 < content_clip.x1) content_clip.x1 = x1;
if (y1 < content_clip.y1) content_clip.y1 = y1;
}
/* Render the content */
plot_ok &= content_redraw(bw->current_content, &data,
&content_clip, &new_ctx);
/* Back to full clip rect */
new_ctx.plot->clip(clip);
if (!bw->window) {
/* Render scrollbars */
int off_x, off_y;
if (bw->scroll_x != NULL) {
browser_window_get_scrollbar_pos(bw, true,
&off_x, &off_y);
plot_ok &= scrollbar_redraw(bw->scroll_x,
x + off_x, y + off_y, clip,
bw->scale, &new_ctx);
}
if (bw->scroll_y != NULL) {
browser_window_get_scrollbar_pos(bw, false,
&off_x, &off_y);
plot_ok &= scrollbar_redraw(bw->scroll_y,
x + off_x, y + off_y, clip,
bw->scale, &new_ctx);
}
}
if (bw->window != NULL && ctx->plot->option_knockout) {
/* Root browser window: end knockout */
knockout_plot_end();
}
return plot_ok;
}
/* exported interface, documented in browser.h */
bool browser_window_redraw_ready(struct browser_window *bw)
{
if (bw == NULL) {
LOG(("NULL browser window"));
return false;
} else if (bw->current_content != NULL) {
/* Can't render locked contents */
return !content_is_locked(bw->current_content);
}
return true;
}
/* exported interface, documented in browser_private.h */
void browser_window_update_extent(struct browser_window *bw)
{
if (bw->window != NULL)
/* Front end window */
guit->window->update_extent(bw->window);
else
/* Core-managed browser window */
browser_window_handle_scrollbars(bw);
}
/* exported interface, documented in browser.h */
void browser_window_get_position(struct browser_window *bw, bool root,
int *pos_x, int *pos_y)
{
*pos_x = 0;
*pos_y = 0;
assert(bw != NULL);
while (bw) {
switch (bw->browser_window_type) {
case BROWSER_WINDOW_FRAMESET:
*pos_x += bw->x * bw->scale;
*pos_y += bw->y * bw->scale;
break;
case BROWSER_WINDOW_NORMAL:
/* There is no offset to the root browser window */
break;
case BROWSER_WINDOW_FRAME:
/* Iframe and Frame handling is identical;
* fall though */
case BROWSER_WINDOW_IFRAME:
*pos_x += (bw->x - scrollbar_get_offset(bw->scroll_x)) *
bw->scale;
*pos_y += (bw->y - scrollbar_get_offset(bw->scroll_y)) *
bw->scale;
break;
}
bw = bw->parent;
if (!root) {
/* return if we just wanted the position in the parent
* browser window. */
return;
}
}
}
/* exported interface, documented in browser.h */
void browser_window_set_position(struct browser_window *bw, int x, int y)
{
assert(bw != NULL);
if (bw->window == NULL) {
/* Core managed browser window */
bw->x = x;
bw->y = y;
} else {
LOG(("Asked to set position of front end window."));
assert(0);
}
}
/* exported interface, documented in browser.h */
void browser_window_set_drag_type(struct browser_window *bw,
browser_drag_type type, const struct rect *rect)
{
struct browser_window *top_bw = browser_window_get_root(bw);
gui_drag_type gtype;
bw->drag_type = type;
if (type == DRAGGING_NONE) {
top_bw->drag_window = NULL;
} else {
top_bw->drag_window = bw;
switch (type) {
case DRAGGING_SELECTION:
/* TODO: tell front end */
return;
case DRAGGING_SCR_X:
case DRAGGING_SCR_Y:
case DRAGGING_CONTENT_SCROLLBAR:
gtype = GDRAGGING_SCROLLBAR;
break;
default:
gtype = GDRAGGING_OTHER;
break;
}
guit->window->drag_start(top_bw->window, gtype, rect);
}
}
/* exported interface, documented in browser.h */
browser_drag_type browser_window_get_drag_type(struct browser_window *bw)
{
return bw->drag_type;
}
/* exported interface, documented in browser.h */
struct browser_window * browser_window_get_root(struct browser_window *bw)
{
while (bw && bw->parent) {
bw = bw->parent;
}
return bw;
}
/* exported interface, documented in browser.h */
browser_editor_flags browser_window_get_editor_flags(struct browser_window *bw)
{
browser_editor_flags ed_flags = BW_EDITOR_NONE;
assert(bw->window);
assert(bw->parent == NULL);
if (bw->selection.bw != NULL) {
ed_flags |= BW_EDITOR_CAN_COPY;
if (!bw->selection.read_only)
ed_flags |= BW_EDITOR_CAN_CUT;
}
if (bw->can_edit)
ed_flags |= BW_EDITOR_CAN_PASTE;
return ed_flags;
}
/* exported interface, documented in browser.h */
bool browser_window_can_select(struct browser_window *bw)
{
if (bw == NULL || bw->current_content == NULL)
return false;
/* TODO: We shouldn't have to know about specific content types
* here. There should be a content_is_selectable() call. */
if (content_get_type(bw->current_content) != CONTENT_HTML &&
content_get_type(bw->current_content) !=
CONTENT_TEXTPLAIN)
return false;
return true;
}
/* exported interface, documented in browser.h */
char * browser_window_get_selection(struct browser_window *bw)
{
assert(bw->window);
assert(bw->parent == NULL);
if (bw->selection.bw == NULL ||
bw->selection.bw->current_content == NULL)
return NULL;
return content_get_selection(bw->selection.bw->current_content);
}
/* exported interface, documented in desktop/browser.h */
bool browser_window_can_search(struct browser_window *bw)
{
if (bw == NULL || bw->current_content == NULL)
return false;
/** \todo We shouldn't have to know about specific content
* types here. There should be a content_is_searchable() call.
*/
if ((content_get_type(bw->current_content) != CONTENT_HTML) &&
(content_get_type(bw->current_content) != CONTENT_TEXTPLAIN)) {
return false;
}
return true;
}
/* exported interface, documented in desktop/browser.h */
bool browser_window_is_frameset(struct browser_window *bw)
{
return (bw->children != NULL);
}
/* exported interface, documented in desktop/browser.h */
nserror browser_window_get_scrollbar_type(struct browser_window *bw,
browser_scrolling *h, browser_scrolling *v)
{
*h = bw->scrolling;
*v = bw->scrolling;
return NSERROR_OK;
}
/**
* Set or remove a selection.
*
* \param bw browser window with selection
* \param selection true if bw has a selection, false if removing selection
* \param read_only true iff selection is read only (e.g. can't cut it)
*/
static void browser_window_set_selection(struct browser_window *bw,
bool selection, bool read_only)
{
struct browser_window *top;
assert(bw != NULL);
top = browser_window_get_root(bw);
assert(top != NULL);
if (bw != top->selection.bw && top->selection.bw != NULL &&
top->selection.bw->current_content != NULL) {
/* clear old selection */
content_clear_selection(top->selection.bw->current_content);
}
if (selection) {
top->selection.bw = bw;
} else {
top->selection.bw = NULL;
}
top->selection.read_only = read_only;
}
/* exported interface, documented in browser.h */
void browser_window_scroll_visible(struct browser_window *bw,
const struct rect *rect)
{
assert(bw != NULL);
if (bw->window != NULL) {
/* Front end window */
guit->window->scroll_visible(bw->window,
rect->x0, rect->y0, rect->x1, rect->y1);
} else {
/* Core managed browser window */
if (bw->scroll_x != NULL)
scrollbar_set(bw->scroll_x, rect->x0, false);
if (bw->scroll_y != NULL)
scrollbar_set(bw->scroll_y, rect->y0, false);
}
}
/* exported interface, documented in browser.h */
void browser_window_set_scroll(struct browser_window *bw, int x, int y)
{
if (bw->window != NULL) {
guit->window->set_scroll(bw->window, x, y);
} else {
if (bw->scroll_x != NULL)
scrollbar_set(bw->scroll_x, x, false);
if (bw->scroll_y != NULL)
scrollbar_set(bw->scroll_y, y, false);
}
}
/**
* Internal helper for getting the positional features
*
* \param[in] bw browser window to examine.
* \param[in] x x-coordinate of point of interest
* \param[in] y y-coordinate of point of interest
* \param[out] data Feature structure to update.
* \return NSERROR_OK or appropriate error code on faliure.
*/
static nserror
browser_window__get_contextual_content(struct browser_window *bw,
int x, int y, struct browser_window_features *data)
{
nserror ret = NSERROR_OK;
/* Handle (i)frame scroll offset (core-managed browser windows only) */
x += scrollbar_get_offset(bw->scroll_x);
y += scrollbar_get_offset(bw->scroll_y);
if (bw->children) {
/* Browser window has children, so pass request on to
* appropriate child.
*/
struct browser_window *bwc;
int cur_child;
int children = bw->rows * bw->cols;
/* Loop through all children of bw */
for (cur_child = 0; cur_child < children; cur_child++) {
/* Set current child */
bwc = &bw->children[cur_child];
/* Skip this frame if (x, y) coord lies outside */
if ((x < bwc->x) ||
(bwc->x + bwc->width < x) ||
(y < bwc->y) ||
(bwc->y + bwc->height < y)) {
continue;
}
/* Pass request into this child */
return browser_window__get_contextual_content(bwc,
(x - bwc->x), (y - bwc->y), data);
}
/* Coordinate not contained by any frame */
} else if (bw->current_content != NULL) {
/* Pass request to content */
ret = content_get_contextual_content(bw->current_content,
x, y, data);
data->main = bw->current_content;
}
return ret;
}
/* exported interface, documented in browser.h */
nserror browser_window_get_features(struct browser_window *bw,
int x, int y, struct browser_window_features *data)
{
/* clear the features structure to empty values */
data->link = NULL;
data->object = NULL;
data->main = NULL;
data->form_features = CTX_FORM_NONE;
return browser_window__get_contextual_content(bw, x, y, data);
}
/* exported interface, documented in browser.h */
bool browser_window_scroll_at_point(struct browser_window *bw,
int x, int y, int scrx, int scry)
{
bool handled_scroll = false;
assert(bw != NULL);
/* Handle (i)frame scroll offset (core-managed browser windows only) */
x += scrollbar_get_offset(bw->scroll_x);
y += scrollbar_get_offset(bw->scroll_y);
if (bw->children) {
/* Browser window has children, so pass request on to
* appropriate child */
struct browser_window *bwc;
int cur_child;
int children = bw->rows * bw->cols;
/* Loop through all children of bw */
for (cur_child = 0; cur_child < children; cur_child++) {
/* Set current child */
bwc = &bw->children[cur_child];
/* Skip this frame if (x, y) coord lies outside */
if (x < bwc->x || bwc->x + bwc->width < x ||
y < bwc->y || bwc->y + bwc->height < y)
continue;
/* Pass request into this child */
return browser_window_scroll_at_point(bwc,
(x - bwc->x), (y - bwc->y),
scrx, scry);
}
}
/* Try to scroll any current content */
if (bw->current_content != NULL && content_scroll_at_point(
bw->current_content, x, y, scrx, scry) == true)
/* Scroll handled by current content */
return true;
/* Try to scroll this window, if scroll not already handled */
if (handled_scroll == false) {
if (bw->scroll_y && scrollbar_scroll(bw->scroll_y, scry))
handled_scroll = true;
if (bw->scroll_x && scrollbar_scroll(bw->scroll_x, scrx))
handled_scroll = true;
}
return handled_scroll;
}
/* exported interface, documented in browser.h */
bool browser_window_drop_file_at_point(struct browser_window *bw,
int x, int y, char *file)
{
assert(bw != NULL);
/* Handle (i)frame scroll offset (core-managed browser windows only) */
x += scrollbar_get_offset(bw->scroll_x);
y += scrollbar_get_offset(bw->scroll_y);
if (bw->children) {
/* Browser window has children, so pass request on to
* appropriate child */
struct browser_window *bwc;
int cur_child;
int children = bw->rows * bw->cols;
/* Loop through all children of bw */
for (cur_child = 0; cur_child < children; cur_child++) {
/* Set current child */
bwc = &bw->children[cur_child];
/* Skip this frame if (x, y) coord lies outside */
if (x < bwc->x || bwc->x + bwc->width < x ||
y < bwc->y || bwc->y + bwc->height < y)
continue;
/* Pass request into this child */
return browser_window_drop_file_at_point(bwc,
(x - bwc->x), (y - bwc->y),
file);
}
}
/* Pass file drop on to any content */
if (bw->current_content != NULL)
return content_drop_file_at_point(bw->current_content,
x, y, file);
return false;
}
/* exported interface, documented in desktop/browser.h */
void browser_window_set_gadget_filename(struct browser_window *bw,
struct form_control *gadget, const char *fn)
{
html_set_file_gadget_filename(bw->current_content, gadget, fn);
}
/* exported interface, documented in browser.h */
nserror browser_window_debug_dump(struct browser_window *bw,
FILE *f, enum content_debug op)
{
if (bw->current_content == NULL) {
return NSERROR_OK;
}
return content_debug_dump(bw->current_content, f, op);
}
/** slow script handler
*/
static bool slow_script(void *ctx)
{
static int count = 0;
LOG(("Continuing execution %d", count));
count++;
if (count > 1) {
count = 0;
return false;
}
return true;
}
/* exported interface, documented in desktop/browser.h */
nserror browser_window_create(enum browser_window_create_flags flags,
nsurl *url, nsurl *referrer,
struct browser_window *existing,
struct browser_window **bw)
{
gui_window_create_flags gw_flags = GW_CREATE_NONE;
struct browser_window *ret;
nserror err;
/* Check parameters */
if (flags & BW_CREATE_CLONE) {
if (existing == NULL) {
assert(0 && "Failed: No existing window provided.");
return NSERROR_BAD_PARAMETER;
}
}
if (!(flags & BW_CREATE_HISTORY)) {
if (!(flags & BW_CREATE_CLONE) || existing == NULL) {
assert(0 && "Failed: Must have existing for history.");
return NSERROR_BAD_PARAMETER;
}
}
if ((ret = calloc(1, sizeof(struct browser_window))) == NULL) {
return NSERROR_NOMEM;
}
/* new javascript context for window */
ret->jsctx = js_newcontext(nsoption_int(script_timeout),
slow_script,
NULL);
/* Initialise common parts */
err = browser_window_initialise_common(flags, ret, existing);
if (err != NSERROR_OK) {
browser_window_destroy(ret);
return err;
}
/* window characteristics */
ret->browser_window_type = BROWSER_WINDOW_NORMAL;
ret->scrolling = BW_SCROLLING_YES;
ret->border = true;
ret->no_resize = true;
ret->last_action = wallclock();
ret->focus = ret;
/* The existing gui_window is on the top-level existing
* browser_window. */
existing = browser_window_get_root(existing);
/* Set up gui_window creation flags */
if (flags & BW_CREATE_TAB)
gw_flags |= GW_CREATE_TAB;
if (flags & BW_CREATE_CLONE)
gw_flags |= GW_CREATE_CLONE;
ret->window = guit->window->create(ret,
(existing != NULL) ? existing->window : NULL,
gw_flags);
if (ret->window == NULL) {
browser_window_destroy(ret);
return NSERROR_BAD_PARAMETER;
}
if (url != NULL) {
enum browser_window_nav_flags nav_flags = BW_NAVIGATE_NONE;
if (flags & BW_CREATE_UNVERIFIABLE)
nav_flags |= BW_NAVIGATE_UNVERIFIABLE;
if (flags & BW_CREATE_HISTORY)
nav_flags |= BW_NAVIGATE_HISTORY;
browser_window_navigate(ret, url, referrer, nav_flags, NULL,
NULL, NULL);
}
if (bw != NULL) {
*bw = ret;
}
return NSERROR_OK;
}
/* exported internal interface, documented in desktop/browser_private.h */
nserror browser_window_initialise_common(enum browser_window_create_flags flags,
struct browser_window *bw, struct browser_window *existing)
{
nserror err;
assert(bw);
if (flags & BW_CREATE_CLONE) {
assert(existing != NULL);
/* clone history */
err = browser_window_history_clone(existing, bw);
/* copy the scale */
bw->scale = existing->scale;
} else {
/* create history */
err = browser_window_history_create(bw);
/* default scale */
bw->scale = (float) nsoption_int(scale) / 100.0;
}
if (err != NSERROR_OK)
return err;
/* window characteristics */
bw->refresh_interval = -1;
bw->drag_type = DRAGGING_NONE;
bw->scroll_x = NULL;
bw->scroll_y = NULL;
bw->focus = NULL;
/* initialise status text cache */
bw->status_text = NULL;
bw->status_text_len = 0;
bw->status_match = 0;
bw->status_miss = 0;
return NSERROR_OK;
}
/**
* implements the download operation of a window navigate
*/
static nserror
browser_window_download(struct browser_window *bw,
nsurl *url,
nsurl *nsref,
uint32_t fetch_flags,
bool fetch_is_post,
llcache_post_data *post)
{
llcache_handle *l;
struct browser_window *root;
nserror error;
root = browser_window_get_root(bw);
assert(root != NULL);
fetch_flags |= LLCACHE_RETRIEVE_FORCE_FETCH;
fetch_flags |= LLCACHE_RETRIEVE_STREAM_DATA;
error = llcache_handle_retrieve(url, fetch_flags, nsref,
fetch_is_post ? post : NULL,
NULL, NULL, &l);
if (error == NSERROR_NO_FETCH_HANDLER) {
/* no internal handler for this type, call out to frontend */
error = guit->browser->launch_url(url);
} else if (error != NSERROR_OK) {
LOG(("Failed to fetch download: %d", error));
} else {
error = download_context_create(l, root->window);
if (error != NSERROR_OK) {
LOG(("Failed creating download context: %d", error));
llcache_handle_abort(l);
llcache_handle_release(l);
}
}
return error;
}
static bool browser_window_check_throbber(struct browser_window *bw)
{
int children, index;
if (bw->throbbing)
return true;
if (bw->children) {
children = bw->rows * bw->cols;
for (index = 0; index < children; index++) {
if (browser_window_check_throbber(&bw->children[index]))
return true;
}
}
if (bw->iframes) {
for (index = 0; index < bw->iframe_count; index++) {
if (browser_window_check_throbber(&bw->iframes[index]))
return true;
}
}
return false;
}
/**
* Start the busy indicator.
*
* \param bw browser window
*/
static void browser_window_start_throbber(struct browser_window *bw)
{
bw->throbbing = true;
while (bw->parent)
bw = bw->parent;
guit->window->start_throbber(bw->window);
}
/**
* Stop the busy indicator.
*
* \param bw browser window
*/
static void browser_window_stop_throbber(struct browser_window *bw)
{
bw->throbbing = false;
while (bw->parent)
bw = bw->parent;
if (!browser_window_check_throbber(bw)) {
guit->window->stop_throbber(bw->window);
}
}
/**
* Callback for fetchcache() for browser window favicon fetches.
*/
static nserror browser_window_favicon_callback(hlcache_handle *c,
const hlcache_event *event, void *pw)
{
struct browser_window *bw = pw;
switch (event->type) {
case CONTENT_MSG_DONE:
if (bw->current_favicon != NULL) {
content_status status =
content_get_status(bw->current_favicon);
if ((status == CONTENT_STATUS_READY) ||
(status == CONTENT_STATUS_DONE))
content_close(bw->current_favicon);
hlcache_handle_release(bw->current_favicon);
}
bw->current_favicon = c;
bw->loading_favicon = NULL;
/* content_get_bitmap on the hlcache_handle should give
* us the favicon bitmap at this point
*/
guit->window->set_icon(bw->window, c);
break;
case CONTENT_MSG_ERROR:
/* clean up after ourselves */
if (c == bw->loading_favicon)
bw->loading_favicon = NULL;
else if (c == bw->current_favicon) {
bw->current_favicon = NULL;
}
hlcache_handle_release(c);
if (bw->failed_favicon == false) {
nsurl *nsref = NULL;
nsurl *nsurl;
nserror error;
bw->failed_favicon = true;
error = nsurl_create("resource:favicon.ico", &nsurl);
if (error != NSERROR_OK) {
LOG(("Unable to create default location url"));
} else {
hlcache_handle_retrieve(nsurl,
HLCACHE_RETRIEVE_SNIFF_TYPE,
nsref, NULL,
browser_window_favicon_callback,
bw, NULL, CONTENT_IMAGE,
&bw->loading_favicon);
nsurl_unref(nsurl);
}
}
break;
default:
break;
}
return NSERROR_OK;
}
static void browser_window_update_favicon(hlcache_handle *c,
struct browser_window *bw, struct content_rfc5988_link *link)
{
nsurl *nsref = NULL;
nsurl *nsurl;
nserror error;
assert(c != NULL);
assert(bw !=NULL);
if (bw->window == NULL)
/* Not top-level browser window; not interested */
return;
/* already fetching the favicon - use that */
if (bw->loading_favicon != NULL)
return;
bw->failed_favicon = false;
if (link == NULL) {
/* Look for "icon" */
link = content_find_rfc5988_link(c, corestring_lwc_icon);
}
if (link == NULL) {
/* Look for "shortcut icon" */
link = content_find_rfc5988_link(c,
corestring_lwc_shortcut_icon);
}
if (link == NULL) {
lwc_string *scheme;
bool speculative_default = false;
bool match;
nsurl = hlcache_handle_get_url(c);
scheme = nsurl_get_component(nsurl, NSURL_SCHEME);
/* If the document was fetched over http(s), then speculate
* that there's a favicon living at /favicon.ico */
if ((lwc_string_caseless_isequal(scheme, corestring_lwc_http,
&match) == lwc_error_ok && match) ||
(lwc_string_caseless_isequal(scheme, corestring_lwc_https,
&match) == lwc_error_ok && match)) {
speculative_default = true;
}
lwc_string_unref(scheme);
if (speculative_default) {
/* no favicon via link, try for the default location */
error = nsurl_join(nsurl, "/favicon.ico", &nsurl);
} else {
bw->failed_favicon = true;
error = nsurl_create("resource:favicon.ico", &nsurl);
}
if (error != NSERROR_OK) {
LOG(("Unable to create default location url"));
return;
}
} else {
nsurl = nsurl_ref(link->href);
}
if (link == NULL) {
LOG(("fetching general favicon from '%s'",
nsurl_access(nsurl)));
} else {
LOG(("fetching favicon rel:%s '%s'",
lwc_string_data(link->rel),
nsurl_access(nsurl)));
}
hlcache_handle_retrieve(nsurl, HLCACHE_RETRIEVE_SNIFF_TYPE,
nsref, NULL, browser_window_favicon_callback,
bw, NULL, CONTENT_IMAGE, &bw->loading_favicon);
nsurl_unref(nsurl);
}
/**
* window callback errorcode handling.
*/
static void
browser_window_callback_errorcode(hlcache_handle *c,
struct browser_window *bw,
nserror code)
{
const char* message;
message = messages_get_errorcode(code);
browser_window_set_status(bw, message);
/* Only warn the user about errors in top-level windows */
if (bw->browser_window_type == BROWSER_WINDOW_NORMAL) {
warn_user(message, 0);
}
if (c == bw->loading_content) {
bw->loading_content = NULL;
} else if (c == bw->current_content) {
bw->current_content = NULL;
browser_window_remove_caret(bw, false);
}
hlcache_handle_release(c);
browser_window_stop_throbber(bw);
}
/**
* Handle meta http-equiv refresh time elapsing by loading a new page.
*
* \param p browser window to refresh with new page
*/
static void browser_window_refresh(void *p)
{
struct browser_window *bw = p;
nsurl *url;
nsurl *refresh;
hlcache_handle *parent = NULL;
enum browser_window_nav_flags flags = BW_NAVIGATE_UNVERIFIABLE;
assert(bw->current_content != NULL &&
(content_get_status(bw->current_content) ==
CONTENT_STATUS_READY ||
content_get_status(bw->current_content) ==
CONTENT_STATUS_DONE));
/* Ignore if the refresh URL has gone
* (may happen if a fetch error occurred) */
refresh = content_get_refresh_url(bw->current_content);
if (refresh == NULL)
return;
/* mark this content as invalid so it gets flushed from the cache */
content_invalidate_reuse_data(bw->current_content);
url = hlcache_handle_get_url(bw->current_content);
if ((url == NULL) || (nsurl_compare(url, refresh, NSURL_COMPLETE))) {
flags |= BW_NAVIGATE_HISTORY;
}
/* Treat an (almost) immediate refresh in a top-level browser window as
* if it were an HTTP redirect, and thus make the resulting fetch
* verifiable.
*
* See fetchcache.c for why redirected fetches should be verifiable at
* all.
*/
if (bw->refresh_interval <= 100 && bw->parent == NULL) {
flags &= ~BW_NAVIGATE_UNVERIFIABLE;
} else {
parent = bw->current_content;
}
browser_window_navigate(bw,
refresh,
url,
flags,
NULL,
NULL,
parent);
}
/**
* Transfer the loading_content to a new download window.
*/
static void browser_window_convert_to_download(struct browser_window *bw,
llcache_handle *stream)
{
struct browser_window *root = browser_window_get_root(bw);
nserror error;
assert(root != NULL);
error = download_context_create(stream, root->window);
if (error != NSERROR_OK) {
llcache_handle_abort(stream);
llcache_handle_release(stream);
}
/* remove content from browser window */
hlcache_handle_release(bw->loading_content);
bw->loading_content = NULL;
browser_window_stop_throbber(bw);
}
/**
* Callback handler for content event messages.
*/
static nserror browser_window_callback(hlcache_handle *c,
const hlcache_event *event, void *pw)
{
struct browser_window *bw = pw;
switch (event->type) {
case CONTENT_MSG_DOWNLOAD:
assert(bw->loading_content == c);
browser_window_convert_to_download(bw, event->data.download);
if (bw->current_content != NULL) {
browser_window_refresh_url_bar(bw);
}
break;
case CONTENT_MSG_LOADING:
assert(bw->loading_content == c);
#ifdef WITH_THEME_INSTALL
if (content_get_type(c) == CONTENT_THEME) {
theme_install_start(c);
bw->loading_content = NULL;
browser_window_stop_throbber(bw);
} else
#endif
{
bw->refresh_interval = -1;
browser_window_set_status(bw,
content_get_status_message(c));
}
break;
case CONTENT_MSG_READY:
{
int width, height;
assert(bw->loading_content == c);
if (bw->current_content != NULL) {
content_status status =
content_get_status(bw->current_content);
if (status == CONTENT_STATUS_READY ||
status == CONTENT_STATUS_DONE)
content_close(bw->current_content);
hlcache_handle_release(bw->current_content);
}
bw->current_content = c;
bw->loading_content = NULL;
/* Format the new content to the correct dimensions */
browser_window_get_dimensions(bw, &width, &height, true);
content_reformat(c, false, width, height);
browser_window_remove_caret(bw, false);
if (bw->window != NULL) {
guit->window->new_content(bw->window);
browser_window_refresh_url_bar(bw);
}
/* new content; set scroll_to_top */
browser_window_update(bw, true);
content_open(c, bw, 0, 0);
browser_window_set_status(bw, content_get_status_message(c));
/* history */
if (bw->history_add && bw->history) {
nsurl *url = hlcache_handle_get_url(c);
if (urldb_add_url(url)) {
urldb_set_url_title(url, content_get_title(c));
urldb_update_url_visit_data(url);
urldb_set_url_content_type(url,
content_get_type(c));
/* This is safe as we've just added the URL */
global_history_add(urldb_get_url(url));
}
/** \todo Urldb / Thumbnails / Local history brokenness
*
* We add to local history after calling urldb_add_url
* rather than in the block above. If urldb_add_url
* fails (as it will for urls like "about:about",
* "about:config" etc), there would be no local history
* node, and later calls to history_update will either
* explode or overwrite the node for the previous URL.
*
* We call it after, rather than before urldb_add_url
* because history_add calls thumbnail_create, which
* tries to register the thumbnail with urldb. That
* thumbnail registration fails if the url doesn't
* exist in urldb already, and only urldb-registered
* thumbnails get freed. So if we called history_add
* before urldb_add_url we would leak thumbnails for
* all newly visited URLs. With the history_add call
* after, we only leak the thumbnails when urldb does
* not add the URL.
*/
browser_window_history_add(bw, c, bw->frag_id);
}
/* frames */
if (content_get_type(c) == CONTENT_HTML &&
html_get_frameset(c) != NULL)
browser_window_create_frameset(bw,
html_get_frameset(c));
if (content_get_type(c) == CONTENT_HTML &&
html_get_iframe(c) != NULL)
browser_window_create_iframes(bw, html_get_iframe(c));
}
break;
case CONTENT_MSG_DONE:
assert(bw->current_content == c);
if (bw->window == NULL) {
/* Updated browser window's scrollbars.
* TODO: do this before CONTENT_MSG_DONE */
browser_window_reformat(bw, true,
bw->width, bw->height);
browser_window_handle_scrollbars(bw);
}
browser_window_update(bw, false);
browser_window_set_status(bw, content_get_status_message(c));
browser_window_stop_throbber(bw);
browser_window_update_favicon(c, bw, NULL);
browser_window_history_update(bw, c);
hotlist_update_url(hlcache_handle_get_url(c));
if (bw->refresh_interval != -1) {
guit->browser->schedule(bw->refresh_interval * 10,
browser_window_refresh, bw);
}
break;
case CONTENT_MSG_ERRORCODE:
browser_window_callback_errorcode(c, bw, event->data.errorcode);
break;
case CONTENT_MSG_ERROR:
browser_window_set_status(bw, event->data.error);
/* Only warn the user about errors in top-level windows */
if (bw->browser_window_type == BROWSER_WINDOW_NORMAL)
warn_user(event->data.error, 0);
if (c == bw->loading_content)
bw->loading_content = NULL;
else if (c == bw->current_content) {
bw->current_content = NULL;
browser_window_remove_caret(bw, false);
}
hlcache_handle_release(c);
browser_window_stop_throbber(bw);
break;
case CONTENT_MSG_REDIRECT:
if (urldb_add_url(event->data.redirect.from))
urldb_update_url_visit_data(event->data.redirect.from);
break;
case CONTENT_MSG_STATUS:
if (event->data.explicit_status_text == NULL) {
/* Object content's status text updated */
const char *status = NULL;
if (bw->loading_content != NULL)
/* Give preference to any loading content */
status = content_get_status_message(
bw->loading_content);
if (status == NULL)
status = content_get_status_message(c);
if (status != NULL)
browser_window_set_status(bw, status);
} else {
/* Object content wants to set explicit message */
browser_window_set_status(bw,
event->data.explicit_status_text);
}
break;
case CONTENT_MSG_REFORMAT:
if (c == bw->current_content &&
content_get_type(c) == CONTENT_HTML) {
/* reposition frames */
if (html_get_frameset(c) != NULL)
browser_window_recalculate_frameset(bw);
/* reflow iframe positions */
if (html_get_iframe(c) != NULL)
browser_window_recalculate_iframes(bw);
}
/* Hide any caret, but don't remove it */
browser_window_remove_caret(bw, true);
if (!(event->data.background)) {
/* Reformatted content should be redrawn */
browser_window_update(bw, false);
}
break;
case CONTENT_MSG_REDRAW:
{
struct rect rect = {
.x0 = event->data.redraw.x,
.y0 = event->data.redraw.y,
.x1 = event->data.redraw.x + event->data.redraw.width,
.y1 = event->data.redraw.y + event->data.redraw.height
};
browser_window_update_box(bw, &rect);
}
break;
case CONTENT_MSG_REFRESH:
bw->refresh_interval = event->data.delay * 100;
break;
case CONTENT_MSG_LINK: /* content has an rfc5988 link element */
{
bool match;
/* Handle "icon" and "shortcut icon" */
if ((lwc_string_caseless_isequal(
event->data.rfc5988_link->rel,
corestring_lwc_icon,
&match) == lwc_error_ok && match) ||
(lwc_string_caseless_isequal(
event->data.rfc5988_link->rel,
corestring_lwc_shortcut_icon,
&match) == lwc_error_ok && match)) {
/* it's a favicon perhaps start a fetch for it */
browser_window_update_favicon(c, bw,
event->data.rfc5988_link);
}
}
break;
case CONTENT_MSG_GETCTX:
/* only the content object created by the browser
* window requires a new global compartment object
*/
assert(bw->loading_content == c);
if (js_newcompartment(bw->jsctx,
bw,
hlcache_handle_get_content(c)) != NULL) {
*(event->data.jscontext) = bw->jsctx;
}
break;
case CONTENT_MSG_SCROLL:
/* Content wants to be scrolled */
if (bw->current_content != c)
break;
if (event->data.scroll.area) {
struct rect rect = {
.x0 = event->data.scroll.x0,
.y0 = event->data.scroll.y0,
.x1 = event->data.scroll.x1,
.y1 = event->data.scroll.y1
};
browser_window_scroll_visible(bw, &rect);
} else {
browser_window_set_scroll(bw,
event->data.scroll.x0,
event->data.scroll.y0);
}
break;
case CONTENT_MSG_DRAGSAVE:
{
/* Content wants drag save of a content */
struct browser_window *root = browser_window_get_root(bw);
hlcache_handle *save = event->data.dragsave.content;
if (save == NULL) {
save = c;
}
switch(event->data.dragsave.type) {
case CONTENT_SAVE_ORIG:
guit->window->drag_save_object(root->window, save,
GUI_SAVE_OBJECT_ORIG);
break;
case CONTENT_SAVE_NATIVE:
guit->window->drag_save_object(root->window, save,
GUI_SAVE_OBJECT_NATIVE);
break;
case CONTENT_SAVE_COMPLETE:
guit->window->drag_save_object(root->window, save,
GUI_SAVE_COMPLETE);
break;
case CONTENT_SAVE_SOURCE:
guit->window->drag_save_object(root->window, save,
GUI_SAVE_SOURCE);
break;
}
}
break;
case CONTENT_MSG_SAVELINK:
{
/* Content wants a link to be saved */
struct browser_window *root = browser_window_get_root(bw);
guit->window->save_link(root->window,
event->data.savelink.url,
event->data.savelink.title);
}
break;
case CONTENT_MSG_POINTER:
/* Content wants to have specific mouse pointer */
browser_window_set_pointer(bw, event->data.pointer);
break;
case CONTENT_MSG_DRAG:
{
browser_drag_type bdt = DRAGGING_NONE;
switch (event->data.drag.type) {
case CONTENT_DRAG_NONE:
bdt = DRAGGING_NONE;
break;
case CONTENT_DRAG_SCROLL:
bdt = DRAGGING_CONTENT_SCROLLBAR;
break;
case CONTENT_DRAG_SELECTION:
bdt = DRAGGING_SELECTION;
break;
}
browser_window_set_drag_type(bw, bdt, event->data.drag.rect);
}
break;
case CONTENT_MSG_CARET:
switch (event->data.caret.type) {
case CONTENT_CARET_REMOVE:
browser_window_remove_caret(bw, false);
break;
case CONTENT_CARET_HIDE:
browser_window_remove_caret(bw, true);
break;
case CONTENT_CARET_SET_POS:
browser_window_place_caret(bw,
event->data.caret.pos.x,
event->data.caret.pos.y,
event->data.caret.pos.height,
event->data.caret.pos.clip);
break;
}
break;
case CONTENT_MSG_SELECTION:
browser_window_set_selection(bw,
event->data.selection.selection,
event->data.selection.read_only);
break;
case CONTENT_MSG_SELECTMENU:
if (event->data.select_menu.gadget->type == GADGET_SELECT) {
struct browser_window *root =
browser_window_get_root(bw);
guit->window->create_form_select_menu(root->window,
event->data.select_menu.gadget);
}
break;
case CONTENT_MSG_GADGETCLICK:
if (event->data.gadget_click.gadget->type == GADGET_FILE) {
struct browser_window *root =
browser_window_get_root(bw);
guit->window->file_gadget_open(root->window, c,
event->data.gadget_click.gadget);
}
break;
default:
break;
}
return NSERROR_OK;
}
/* Have to forward declare browser_window_destroy_internal */
static void browser_window_destroy_internal(struct browser_window *bw);
/**
* Close and destroy all child browser window.
*
* \param bw browser window
*/
static void browser_window_destroy_children(struct browser_window *bw)
{
int i;
if (bw->children) {
for (i = 0; i < (bw->rows * bw->cols); i++)
browser_window_destroy_internal(&bw->children[i]);
free(bw->children);
bw->children = NULL;
bw->rows = 0;
bw->cols = 0;
}
if (bw->iframes) {
for (i = 0; i < bw->iframe_count; i++)
browser_window_destroy_internal(&bw->iframes[i]);
free(bw->iframes);
bw->iframes = NULL;
bw->iframe_count = 0;
}
}
/**
* Release all memory associated with a browser window.
*
* \param bw browser window
*/
static void browser_window_destroy_internal(struct browser_window *bw)
{
assert(bw);
LOG(("Destroying window"));
if (bw->children != NULL || bw->iframes != NULL) {
browser_window_destroy_children(bw);
}
/* clear any pending callbacks */
guit->browser->schedule(-1, browser_window_refresh, bw);
/* The ugly cast here is so the reformat function can be
* passed a gui window pointer in its API rather than void*
*/
LOG(("Clearing schedule %p(%p)", guit->window->reformat, bw->window));
guit->browser->schedule(-1, (void(*)(void*))guit->window->reformat, bw->window);
/* If this brower window is not the root window, and has focus, unset
* the root browser window's focus pointer. */
if (!bw->window) {
struct browser_window *top = browser_window_get_root(bw);
if (top->focus == bw)
top->focus = top;
if (top->selection.bw == bw) {
browser_window_set_selection(top, false, false);
}
}
/* Destruction order is important: we must ensure that the frontend
* destroys any window(s) associated with this browser window before
* we attempt any destructive cleanup.
*/
if (bw->window) {
/* Only the root window has a GUI window */
guit->window->destroy(bw->window);
}
if (bw->loading_content != NULL) {
hlcache_handle_abort(bw->loading_content);
hlcache_handle_release(bw->loading_content);
bw->loading_content = NULL;
}
if (bw->current_content != NULL) {
content_status status = content_get_status(bw->current_content);
if (status == CONTENT_STATUS_READY ||
status == CONTENT_STATUS_DONE)
content_close(bw->current_content);
hlcache_handle_release(bw->current_content);
bw->current_content = NULL;
}
if (bw->loading_favicon != NULL) {
hlcache_handle_abort(bw->loading_favicon);
hlcache_handle_release(bw->loading_favicon);
bw->loading_favicon = NULL;
}
if (bw->current_favicon != NULL) {
content_status status = content_get_status(bw->current_favicon);
if (status == CONTENT_STATUS_READY ||
status == CONTENT_STATUS_DONE)
content_close(bw->current_favicon);
hlcache_handle_release(bw->current_favicon);
bw->current_favicon = NULL;
}
if (bw->box != NULL) {
bw->box->iframe = NULL;
bw->box = NULL;
}
if (bw->jsctx != NULL) {
js_destroycontext(bw->jsctx);
}
/* These simply free memory, so are safe here */
if (bw->frag_id != NULL)
lwc_string_unref(bw->frag_id);
browser_window_history_destroy(bw);
free(bw->name);
free(bw->status_text);
bw->status_text = NULL;
LOG(("Status text cache match:miss %d:%d",
bw->status_match, bw->status_miss));
}
/**
* Update URL bar for a given browser window to given URL
*
* \param bw Browser window to update URL bar for.
* \param url URL for content displayed by bw including any fragment.
*/
static inline nserror
browser_window_refresh_url_bar_internal(struct browser_window *bw, nsurl *url)
{
assert(bw);
assert(url);
if ((bw->parent != NULL) || (bw->window == NULL)) {
/* Not root window or no gui window so do not set a URL */
return NSERROR_OK;
}
return guit->window->set_url(bw->window, nsurl_access(url));
}
/* exported interface, documented in desktop/browser.h */
void browser_window_destroy(struct browser_window *bw)
{
/* can't destoy child windows on their own */
assert(!bw->parent);
/* destroy */
browser_window_destroy_internal(bw);
free(bw);
}
/* exported interface, documented in desktop/browser.h */
nserror browser_window_refresh_url_bar(struct browser_window *bw)
{
nserror ret;
nsurl *display_url;
assert(bw);
if (bw->parent != NULL) {
/* Not root window; don't set a URL in GUI URL bar */
return NSERROR_OK;
}
if (bw->current_content == NULL) {
/* no content so return about:blank */
ret = browser_window_refresh_url_bar_internal(bw,
corestring_nsurl_about_blank);
} else if (bw->frag_id == NULL) {
ret = browser_window_refresh_url_bar_internal(bw,
hlcache_handle_get_url(bw->current_content));
} else {
/* Combine URL and Fragment */
ret = nsurl_refragment(
hlcache_handle_get_url(bw->current_content),
bw->frag_id, &display_url);
if (ret == NSERROR_OK) {
ret = browser_window_refresh_url_bar_internal(bw,
display_url);
nsurl_unref(display_url);
}
}
return ret;
}
/* exported interface documented in desktop/browser.h */
nserror browser_window_navigate(struct browser_window *bw,
nsurl *url,
nsurl *referrer,
enum browser_window_nav_flags flags,
char *post_urlenc,
struct fetch_multipart_data *post_multipart,
hlcache_handle *parent)
{
hlcache_handle *c;
int depth = 0;
struct browser_window *cur;
uint32_t fetch_flags = 0;
bool fetch_is_post = (post_urlenc != NULL || post_multipart != NULL);
llcache_post_data post;
hlcache_child_context child;
nserror error;
assert(bw);
assert(url);
LOG(("bw %p, url %s", bw, nsurl_access(url)));
/* don't allow massively nested framesets */
for (cur = bw; cur->parent; cur = cur->parent) {
depth++;
}
if (depth > FRAME_DEPTH) {
LOG(("frame depth too high."));
return NSERROR_FRAME_DEPTH;
}
/* Set up retrieval parameters */
if (!(flags & BW_NAVIGATE_UNVERIFIABLE)) {
fetch_flags |= LLCACHE_RETRIEVE_VERIFIABLE;
}
if (post_multipart != NULL) {
post.type = LLCACHE_POST_MULTIPART;
post.data.multipart = post_multipart;
} else if (post_urlenc != NULL) {
post.type = LLCACHE_POST_URL_ENCODED;
post.data.urlenc = post_urlenc;
}
if ((parent != NULL) && (content_get_type(parent) == CONTENT_HTML)) {
child.charset = html_get_encoding(parent);
child.quirks = content_get_quirks(parent);
}
url = nsurl_ref(url);
if (referrer != NULL) {
referrer = nsurl_ref(referrer);
}
/* Get download out of the way */
if ((flags & BW_NAVIGATE_DOWNLOAD) != 0) {
error = browser_window_download(bw,
url,
referrer,
fetch_flags,
fetch_is_post,
&post);
nsurl_unref(url);
if (referrer != NULL) {
nsurl_unref(referrer);
}
return error;
}
if (bw->frag_id != NULL) {
lwc_string_unref(bw->frag_id);
}
bw->frag_id = NULL;
if (nsurl_has_component(url, NSURL_FRAGMENT)) {
bool same_url = false;
bw->frag_id = nsurl_get_component(url, NSURL_FRAGMENT);
/* Compare new URL with existing one (ignoring fragments) */
if ((bw->current_content != NULL) &&
(hlcache_handle_get_url(bw->current_content) != NULL)) {
same_url = nsurl_compare(url,
hlcache_handle_get_url(
bw->current_content),
NSURL_COMPLETE);
}
/* if we're simply moving to another ID on the same page,
* don't bother to fetch, just update the window.
*/
if ((same_url) &&
(fetch_is_post == false) &&
(nsurl_has_component(url, NSURL_QUERY) == false)) {
nsurl_unref(url);
if (referrer != NULL) {
nsurl_unref(referrer);
}
if ((flags & BW_NAVIGATE_HISTORY) != 0) {
browser_window_history_add(bw,
bw->current_content, bw->frag_id);
}
browser_window_update(bw, false);
if (bw->current_content != NULL) {
browser_window_refresh_url_bar(bw);
}
return NSERROR_OK;
}
}
browser_window_stop(bw);
browser_window_remove_caret(bw, false);
browser_window_destroy_children(bw);
LOG(("Loading '%s'", nsurl_access(url)));
browser_window_set_status(bw, messages_get("Loading"));
bw->history_add = (flags & BW_NAVIGATE_HISTORY);
/* Verifiable fetches may trigger a download */
if (!(flags & BW_NAVIGATE_UNVERIFIABLE)) {
fetch_flags |= HLCACHE_RETRIEVE_MAY_DOWNLOAD;
}
error = hlcache_handle_retrieve(url,
fetch_flags | HLCACHE_RETRIEVE_SNIFF_TYPE,
referrer,
fetch_is_post ? &post : NULL,
browser_window_callback, bw,
parent != NULL ? &child : NULL,
CONTENT_ANY, &c);
switch (error) {
case NSERROR_OK:
bw->loading_content = c;
browser_window_start_throbber(bw);
error = browser_window_refresh_url_bar_internal(bw, url);
break;
case NSERROR_NO_FETCH_HANDLER: /* no handler for this type */
/** \todo does this always try and download even
* unverifiable content?
*/
error = guit->browser->launch_url(url);
break;
default: /* report error to user */
browser_window_set_status(bw, messages_get_errorcode(error));
/** @todo should the caller report the error? */
warn_user(messages_get_errorcode(error), 0);
break;
}
nsurl_unref(url);
if (referrer != NULL) {
nsurl_unref(referrer);
}
/* Record time */
bw->last_action = wallclock();
return error;
}
/* Exported interface, documented in browser.h */
bool browser_window_up_available(struct browser_window *bw)
{
bool result = false;
if (bw != NULL && bw->current_content != NULL) {
nsurl *parent;
nserror err = nsurl_parent(hlcache_handle_get_url(
bw->current_content), &parent);
if (err == NSERROR_OK) {
result = nsurl_compare(hlcache_handle_get_url(
bw->current_content), parent,
NSURL_COMPLETE) == false;
nsurl_unref(parent);
}
}
return result;
}
/* Exported interface, documented in browser.h */
nserror browser_window_navigate_up(struct browser_window *bw, bool new_window)
{
nsurl *current, *parent;
nserror err;
if (bw == NULL)
return NSERROR_BAD_PARAMETER;
current = browser_window_get_url(bw);
err = nsurl_parent(current, &parent);
if (err != NSERROR_OK) {
return err;
}
if (nsurl_compare(current, parent, NSURL_COMPLETE) == true) {
/* Can't go up to parent from here */
nsurl_unref(parent);
return NSERROR_OK;
}
if (new_window) {
err = browser_window_create(BW_CREATE_CLONE,
parent, NULL, bw, NULL);
} else {
err = browser_window_navigate(bw, parent, NULL,
BW_NAVIGATE_HISTORY, NULL, NULL, NULL);
}
nsurl_unref(parent);
return err;
}
/* Exported interface, documented in browser.h */
nsurl* browser_window_get_url(struct browser_window *bw)
{
assert(bw != NULL);
if (bw->current_content != NULL) {
return hlcache_handle_get_url(bw->current_content);
} else if (bw->loading_content != NULL) {
/* TODO: should we return this? */
return hlcache_handle_get_url(bw->loading_content);
}
return corestring_nsurl_about_blank;
}
/* Exported interface, documented in browser.h */
const char* browser_window_get_title(struct browser_window *bw)
{
assert(bw != NULL);
if (bw->current_content != NULL) {
return content_get_title(bw->current_content);
}
/* no content so return about:blank */
return nsurl_access(corestring_nsurl_about_blank);
}
/* Exported interface, documented in browser.h */
struct history * browser_window_get_history(struct browser_window *bw)
{
assert(bw != NULL);
return bw->history;
}
/* Exported interface, documented in browser.h */
bool browser_window_has_content(struct browser_window *bw)
{
assert(bw != NULL);
if (bw->current_content == NULL) {
return false;
}
return true;
}
/* Exported interface, documented in browser.h */
struct hlcache_handle *browser_window_get_content(struct browser_window *bw)
{
return bw->current_content;
}
/* Exported interface, documented in browser.h */
nserror browser_window_get_extents(struct browser_window *bw, bool scaled,
int *width, int *height)
{
assert(bw != NULL);
if (bw->current_content == NULL) {
*width = 0;
*height = 0;
return NSERROR_BAD_CONTENT;
}
*width = content_get_width(bw->current_content);
*height = content_get_height(bw->current_content);
if (scaled) {
*width *= bw->scale;
*height *= bw->scale;
}
return NSERROR_OK;
}
/* exported internal interface, documented in desktop/browser_private.h */
void browser_window_get_dimensions(struct browser_window *bw,
int *width, int *height, bool scaled)
{
assert(bw);
if (bw->window == NULL) {
/* Core managed browser window */
*width = bw->width;
*height = bw->height;
} else {
/* Front end window */
guit->window->get_dimensions(bw->window, width, height, scaled);
}
}
/* Exported interface, documented in browser.h */
void browser_window_set_dimensions(struct browser_window *bw,
int width, int height)
{
assert(bw);
if (bw->window == NULL) {
/* Core managed browser window */
bw->width = width;
bw->height = height;
} else {
LOG(("Asked to set dimensions of front end window."));
assert(0);
}
}
/* Exported interface, documented in browser.h */
void browser_window_update(struct browser_window *bw, bool scroll_to_top)
{
int x, y;
if (bw->current_content == NULL)
return;
switch (bw->browser_window_type) {
case BROWSER_WINDOW_NORMAL:
/* Root browser window, constituting a front end window/tab */
guit->window->set_title(bw->window,
content_get_title(bw->current_content));
browser_window_update_extent(bw);
if (scroll_to_top)
browser_window_set_scroll(bw, 0, 0);
/* if frag_id exists, then try to scroll to it */
/** @todo don't do this if the user has scrolled */
if (bw->frag_id && html_get_id_offset(bw->current_content,
bw->frag_id, &x, &y)) {
browser_window_set_scroll(bw, x, y);
}
guit->window->redraw(bw->window);
break;
case BROWSER_WINDOW_IFRAME:
/* Internal iframe browser window */
assert(bw->parent != NULL);
assert(bw->parent->current_content != NULL);
browser_window_update_extent(bw);
if (scroll_to_top)
browser_window_set_scroll(bw, 0, 0);
/* if frag_id exists, then try to scroll to it */
/** @todo don't do this if the user has scrolled */
if (bw->frag_id && html_get_id_offset(bw->current_content,
bw->frag_id, &x, &y)) {
browser_window_set_scroll(bw, x, y);
}
html_redraw_a_box(bw->parent->current_content, bw->box);
break;
case BROWSER_WINDOW_FRAME:
{
struct rect rect;
browser_window_update_extent(bw);
if (scroll_to_top)
browser_window_set_scroll(bw, 0, 0);
/* if frag_id exists, then try to scroll to it */
/** @todo don't do this if the user has scrolled */
if (bw->frag_id && html_get_id_offset(bw->current_content,
bw->frag_id, &x, &y)) {
browser_window_set_scroll(bw, x, y);
}
rect.x0 = scrollbar_get_offset(bw->scroll_x);
rect.y0 = scrollbar_get_offset(bw->scroll_y);
rect.x1 = rect.x0 + bw->width;
rect.y1 = rect.y0 + bw->height;
browser_window_update_box(bw, &rect);
}
break;
default:
case BROWSER_WINDOW_FRAMESET:
/* Nothing to do */
break;
}
}
/* Exported interface, documented in desktop/browser.h */
void browser_window_update_box(struct browser_window *bw, struct rect *rect)
{
int pos_x;
int pos_y;
struct browser_window *top;
assert(bw);
if (bw->window != NULL) {
/* Front end window */
guit->window->update(bw->window, rect);
} else {
/* Core managed browser window */
browser_window_get_position(bw, true, &pos_x, &pos_y);
top = browser_window_get_root(bw);
rect->x0 += pos_x / bw->scale;
rect->y0 += pos_y / bw->scale;
rect->x1 += pos_x / bw->scale;
rect->y1 += pos_y / bw->scale;
guit->window->update(top->window, rect);
}
}
/* Exported interface, documented in desktop/browser.h */
void browser_window_stop(struct browser_window *bw)
{
int children, index;
if (bw->loading_content != NULL) {
hlcache_handle_abort(bw->loading_content);
hlcache_handle_release(bw->loading_content);
bw->loading_content = NULL;
}
if (bw->current_content != NULL && content_get_status(
bw->current_content) != CONTENT_STATUS_DONE) {
nserror error;
assert(content_get_status(bw->current_content) ==
CONTENT_STATUS_READY);
error = hlcache_handle_abort(bw->current_content);
assert(error == NSERROR_OK);
}
guit->browser->schedule(-1, browser_window_refresh, bw);
if (bw->children) {
children = bw->rows * bw->cols;
for (index = 0; index < children; index++)
browser_window_stop(&bw->children[index]);
}
if (bw->iframes) {
children = bw->iframe_count;
for (index = 0; index < children; index++)
browser_window_stop(&bw->iframes[index]);
}
if (bw->current_content != NULL) {
browser_window_refresh_url_bar(bw);
}
browser_window_stop_throbber(bw);
}
/* Exported interface, documented in desktop/browser.h */
void browser_window_reload(struct browser_window *bw, bool all)
{
hlcache_handle *c;
unsigned int i;
if (bw->current_content == NULL || bw->loading_content != NULL)
return;
if (all && content_get_type(bw->current_content) == CONTENT_HTML) {
struct html_stylesheet *sheets;
struct content_html_object *object;
unsigned int count;
c = bw->current_content;
/* invalidate objects */
object = html_get_objects(c, &count);
for (; object != NULL; object = object->next) {
if (object->content != NULL)
content_invalidate_reuse_data(object->content);
}
/* invalidate stylesheets */
sheets = html_get_stylesheets(c, &count);
for (i = STYLESHEET_START; i != count; i++) {
if (sheets[i].sheet != NULL) {
content_invalidate_reuse_data(sheets[i].sheet);
}
}
}
content_invalidate_reuse_data(bw->current_content);
browser_window_navigate(bw,
hlcache_handle_get_url(bw->current_content),
NULL,
BW_NAVIGATE_NONE,
NULL,
NULL,
NULL);
}
/* Exported interface, documented in desktop/browser.h */
void browser_window_set_status(struct browser_window *bw, const char *text)
{
int text_len;
/* find topmost window */
while (bw->parent)
bw = bw->parent;
if ((bw->status_text != NULL) &&
(strcmp(text, bw->status_text) == 0)) {
/* status text is unchanged */
bw->status_match++;
return;
}
/* status text is changed */
text_len = strlen(text);
if ((bw->status_text == NULL) || (bw->status_text_len < text_len)) {
/* no current string allocation or it is not long enough */
free(bw->status_text);
bw->status_text = strdup(text);
bw->status_text_len = text_len;
} else {
/* current allocation has enough space */
memcpy(bw->status_text, text, text_len + 1);
}
bw->status_miss++;
guit->window->set_status(bw->window, bw->status_text);
}
/* Exported interface, documented in desktop/browser.h */
void browser_window_set_pointer(struct browser_window *bw,
browser_pointer_shape shape)
{
struct browser_window *root = browser_window_get_root(bw);
gui_pointer_shape gui_shape;
bool loading;
assert(root);
assert(root->window);
loading = (bw->loading_content != NULL || (bw->current_content &&
content_get_status(bw->current_content) ==
CONTENT_STATUS_READY));
if (wallclock() - bw->last_action < 100 && loading) {
/* If loading and less than 1 second since last link followed,
* force progress indicator pointer */
gui_shape = GUI_POINTER_PROGRESS;
} else if (shape == BROWSER_POINTER_AUTO) {
/* Up to browser window to decide */
if (loading)
gui_shape = GUI_POINTER_PROGRESS;
else
gui_shape = GUI_POINTER_DEFAULT;
} else {
/* Use what we were told */
gui_shape = (gui_pointer_shape)shape;
}
guit->window->set_pointer(root->window, gui_shape);
}
/* exported function documented in desktop/browser.h */
nserror browser_window_schedule_reformat(struct browser_window *bw)
{
/* The ugly cast here is so the reformat function can be
* passed a gui window pointer in its API rather than void*
*/
LOG(("Scheduleing %p(%p)", guit->window->reformat, bw->window));
guit->browser->schedule(0, (void(*)(void*))guit->window->reformat, bw->window);
return NSERROR_OK;
}
/* exported function documented in desktop/browser.h */
void browser_window_reformat(struct browser_window *bw, bool background,
int width, int height)
{
hlcache_handle *c = bw->current_content;
if (c == NULL)
return;
if (bw->browser_window_type != BROWSER_WINDOW_IFRAME) {
/* Iframe dimensions are already scaled in parent's layout */
width /= bw->scale;
height /= bw->scale;
}
if (bw->window == NULL) {
/* Core managed browser window; subtract scrollbar width */
width -= bw->scroll_y ? SCROLLBAR_WIDTH : 0;
height -= bw->scroll_x ? SCROLLBAR_WIDTH : 0;
width = width > 0 ? width : 0;
height = height > 0 ? height : 0;
}
content_reformat(c, background, width, height);
}
/**
* Set bowser window scale.
*
* \param bw Browser window.
* \param scale value.
*/
static void browser_window_set_scale_internal(struct browser_window *bw,
float scale)
{
int i;
hlcache_handle *c;
if (fabs(bw->scale-scale) < 0.0001)
return;
bw->scale = scale;
c = bw->current_content;
if (c != NULL) {
if (content_can_reformat(c) == false) {
browser_window_update(bw, false);
} else {
browser_window_schedule_reformat(bw);
}
}
for (i = 0; i < (bw->cols * bw->rows); i++)
browser_window_set_scale_internal(&bw->children[i], scale);
for (i = 0; i < bw->iframe_count; i++)
browser_window_set_scale_internal(&bw->iframes[i], scale);
}
/* exported interface documented in desktop/browser.h */
void browser_window_set_scale(struct browser_window *bw, float scale, bool all)
{
while (bw->parent && all)
bw = bw->parent;
browser_window_set_scale_internal(bw, scale);
if (bw->parent)
bw = bw->parent;
browser_window_recalculate_frameset(bw);
}
/* exported interface documented in desktop/browser.h */
float browser_window_get_scale(struct browser_window *bw)
{
return bw->scale;
}
/**
* Find browser window.
*
* \param bw Browser window.
* \param target Name of target.
* \param depth Depth to scan.
* \param page The browser window page.
* \param rdepth The rdepth.
* \param bw_target the output browser window.
*/
static void browser_window_find_target_internal(struct browser_window *bw,
const char *target, int depth, struct browser_window *page,
int *rdepth, struct browser_window **bw_target)
{
int i;
if ((bw->name) && (!strcasecmp(bw->name, target))) {
if ((bw == page) || (depth > *rdepth)) {
*rdepth = depth;
*bw_target = bw;
}
}
if ((!bw->children) && (!bw->iframes))
return;
depth++;
if (bw->children != NULL) {
for (i = 0; i < (bw->cols * bw->rows); i++) {
if ((bw->children[i].name) &&
(!strcasecmp(bw->children[i].name,
target))) {
if ((page == &bw->children[i]) ||
(depth > *rdepth)) {
*rdepth = depth;
*bw_target = &bw->children[i];
}
}
if (bw->children[i].children)
browser_window_find_target_internal(
&bw->children[i],
target, depth, page,
rdepth, bw_target);
}
}
if (bw->iframes != NULL) {
for (i = 0; i < bw->iframe_count; i++)
browser_window_find_target_internal(&bw->iframes[i],
target, depth, page, rdepth, bw_target);
}
}
/* exported interface documented in desktop/browser.h */
struct browser_window *browser_window_find_target(struct browser_window *bw,
const char *target, browser_mouse_state mouse)
{
struct browser_window *bw_target;
struct browser_window *top;
hlcache_handle *c;
int rdepth;
nserror error;
/* use the base target if we don't have one */
c = bw->current_content;
if (target == NULL && c != NULL && content_get_type(c) == CONTENT_HTML)
target = html_get_base_target(c);
if (target == NULL)
target = TARGET_SELF;
/* allow the simple case of target="_blank" to be ignored if requested
*/
if ((!(mouse & BROWSER_MOUSE_CLICK_2)) &&
(!((mouse & BROWSER_MOUSE_CLICK_2) &&
(mouse & BROWSER_MOUSE_MOD_2))) &&
(!nsoption_bool(target_blank))) {
/* not a mouse button 2 click
* not a mouse button 1 click with ctrl pressed
* configured to ignore target="_blank" */
if ((target == TARGET_BLANK) || (!strcasecmp(target, "_blank")))
return bw;
}
/* handle reserved keywords */
if (((nsoption_bool(button_2_tab)) &&
(mouse & BROWSER_MOUSE_CLICK_2))||
((!nsoption_bool(button_2_tab)) &&
((mouse & BROWSER_MOUSE_CLICK_1) &&
(mouse & BROWSER_MOUSE_MOD_2))) ||
((nsoption_bool(button_2_tab)) &&
((target == TARGET_BLANK) ||
(!strcasecmp(target, "_blank"))))) {
/* open in new tab if:
* - button_2 opens in new tab and button_2 was pressed
* OR
* - button_2 doesn't open in new tabs and button_1 was
* pressed with ctrl held
* OR
* - button_2 opens in new tab and the link target is "_blank"
*/
error = browser_window_create(BW_CREATE_TAB |
BW_CREATE_HISTORY |
BW_CREATE_CLONE,
NULL,
NULL,
bw,
&bw_target);
if (error != NSERROR_OK) {
return bw;
}
return bw_target;
} else if (((!nsoption_bool(button_2_tab)) &&
(mouse & BROWSER_MOUSE_CLICK_2)) ||
((nsoption_bool(button_2_tab)) &&
((mouse & BROWSER_MOUSE_CLICK_1) &&
(mouse & BROWSER_MOUSE_MOD_2))) ||
((!nsoption_bool(button_2_tab)) &&
((target == TARGET_BLANK) ||
(!strcasecmp(target, "_blank"))))) {
/* open in new window if:
* - button_2 doesn't open in new tabs and button_2 was pressed
* OR
* - button_2 opens in new tab and button_1 was pressed with
* ctrl held
* OR
* - button_2 doesn't open in new tabs and the link target is
* "_blank"
*/
error = browser_window_create(BW_CREATE_HISTORY |
BW_CREATE_CLONE,
NULL,
NULL,
bw,
&bw_target);
if (error != NSERROR_OK) {
return bw;
}
return bw_target;
} else if ((target == TARGET_SELF) || (!strcasecmp(target, "_self"))) {
return bw;
} else if ((target == TARGET_PARENT) ||
(!strcasecmp(target, "_parent"))) {
if (bw->parent)
return bw->parent;
return bw;
} else if ((target == TARGET_TOP) || (!strcasecmp(target, "_top"))) {
while (bw->parent)
bw = bw->parent;
return bw;
}
/* find frame according to B.8, ie using the following priorities:
*
* 1) current frame
* 2) closest to front
*/
rdepth = -1;
bw_target = NULL;
for (top = bw; top->parent; top = top->parent);
browser_window_find_target_internal(top, target, 0, bw, &rdepth,
&bw_target);
if (bw_target)
return bw_target;
/* we require a new window using the target name */
if (!nsoption_bool(target_blank))
return bw;
error = browser_window_create(BW_CREATE_CLONE | BW_CREATE_HISTORY,
NULL,
NULL,
bw,
&bw_target);
if (error != NSERROR_OK) {
return bw;
}
/* frame names should begin with an alphabetic character (a-z,A-Z),
* however in practice you get things such as '_new' and '2left'. The
* only real effect this has is when giving out names as it can be
* assumed that an author intended '_new' to create a new nameless
* window (ie '_blank') whereas in the case of '2left' the intention
* was for a new named window. As such we merely special case windows
* that begin with an underscore. */
if (target[0] != '_') {
bw_target->name = strdup(target);
if (!bw_target->name)
warn_user("NoMemory", 0);
}
return bw_target;
}
/**
* Handles the end of a drag operation in a browser window.
*
* \param bw browser window
* \param mouse state of mouse buttons and modifier keys
* \param x coordinate of mouse
* \param y coordinate of mouse
*
* \todo Remove this function, once these things are associated with content,
* rather than bw.
*/
static void browser_window_mouse_drag_end(struct browser_window *bw,
browser_mouse_state mouse, int x, int y)
{
int scr_x, scr_y;
switch (bw->drag_type) {
case DRAGGING_SELECTION:
case DRAGGING_OTHER:
case DRAGGING_CONTENT_SCROLLBAR:
/* Drag handled by content handler */
break;
case DRAGGING_SCR_X:
browser_window_get_scrollbar_pos(bw, true, &scr_x, &scr_y);
scr_x = x - scr_x - scrollbar_get_offset(bw->scroll_x);
scr_y = y - scr_y - scrollbar_get_offset(bw->scroll_y);
scrollbar_mouse_drag_end(bw->scroll_x, mouse, scr_x, scr_y);
bw->drag_type = DRAGGING_NONE;
break;
case DRAGGING_SCR_Y:
browser_window_get_scrollbar_pos(bw, false, &scr_x, &scr_y);
scr_x = x - scr_x - scrollbar_get_offset(bw->scroll_x);
scr_y = y - scr_y - scrollbar_get_offset(bw->scroll_y);
scrollbar_mouse_drag_end(bw->scroll_y, mouse, scr_x, scr_y);
bw->drag_type = DRAGGING_NONE;
break;
default:
browser_window_set_drag_type(bw, DRAGGING_NONE, NULL);
break;
}
}
/* exported interface documented in desktop/browser.h */
void browser_window_mouse_track(struct browser_window *bw,
browser_mouse_state mouse, int x, int y)
{
hlcache_handle *c = bw->current_content;
const char *status = NULL;
browser_pointer_shape pointer = BROWSER_POINTER_DEFAULT;
if (bw->window != NULL && bw->drag_window && bw != bw->drag_window) {
/* This is the root browser window and there's an active drag
* in a sub window.
* Pass the mouse action straight on to that bw. */
struct browser_window *drag_bw = bw->drag_window;
int off_x = 0;
int off_y = 0;
browser_window_get_position(drag_bw, true, &off_x, &off_y);
if (drag_bw->browser_window_type == BROWSER_WINDOW_FRAME) {
browser_window_mouse_track(drag_bw, mouse,
x - off_x, y - off_y);
} else if (drag_bw->browser_window_type ==
BROWSER_WINDOW_IFRAME) {
browser_window_mouse_track(drag_bw, mouse,
x - off_x / bw->scale,
y - off_y / bw->scale);
}
return;
}
if (bw->children) {
/* Browser window has children (frames) */
struct browser_window *child;
int cur_child;
int children = bw->rows * bw->cols;
for (cur_child = 0; cur_child < children; cur_child++) {
child = &bw->children[cur_child];
if (x < child->x || y < child->y ||
child->x + child->width < x ||
child->y + child->height < y) {
/* Click not in this child */
continue;
}
/* It's this child that contains the mouse; pass
* mouse action on to child */
browser_window_mouse_track(child, mouse,
x - child->x + scrollbar_get_offset(
child->scroll_x),
y - child->y + scrollbar_get_offset(
child->scroll_y));
/* Mouse action was for this child, we're done */
return;
}
/* Odd if we reached here, but nothing else can use the click
* when there are children. */
return;
}
if (c == NULL && bw->drag_type != DRAGGING_FRAME)
return;
if (bw->drag_type != DRAGGING_NONE && !mouse) {
browser_window_mouse_drag_end(bw, mouse, x, y);
}
/* Browser window's horizontal scrollbar */
if (bw->scroll_x != NULL && bw->drag_type != DRAGGING_SCR_Y) {
int scr_x, scr_y;
browser_window_get_scrollbar_pos(bw, true, &scr_x, &scr_y);
scr_x = x - scr_x - scrollbar_get_offset(bw->scroll_x);
scr_y = y - scr_y - scrollbar_get_offset(bw->scroll_y);
if ((scr_x > 0 && scr_x < browser_window_get_scrollbar_len(bw,
true) &&
scr_y > 0 && scr_y < SCROLLBAR_WIDTH &&
bw->drag_type == DRAGGING_NONE) ||
bw->drag_type == DRAGGING_SCR_X) {
/* Start a scrollbar drag, or continue existing drag */
status = scrollbar_mouse_status_to_message(
scrollbar_mouse_action(
bw->scroll_x, mouse,
scr_x, scr_y));
pointer = BROWSER_POINTER_DEFAULT;
if (status != NULL)
browser_window_set_status(bw, status);
browser_window_set_pointer(bw, pointer);
return;
}
}
/* Browser window's vertical scrollbar */
if (bw->scroll_y != NULL) {
int scr_x, scr_y;
browser_window_get_scrollbar_pos(bw, false, &scr_x, &scr_y);
scr_x = x - scr_x - scrollbar_get_offset(bw->scroll_x);
scr_y = y - scr_y - scrollbar_get_offset(bw->scroll_y);
if ((scr_y > 0 && scr_y < browser_window_get_scrollbar_len(bw,
false) &&
scr_x > 0 && scr_x < SCROLLBAR_WIDTH &&
bw->drag_type == DRAGGING_NONE) ||
bw->drag_type == DRAGGING_SCR_Y) {
/* Start a scrollbar drag, or continue existing drag */
status = scrollbar_mouse_status_to_message(
scrollbar_mouse_action(
bw->scroll_y, mouse,
scr_x, scr_y));
pointer = BROWSER_POINTER_DEFAULT;
if (status != NULL)
browser_window_set_status(bw, status);
browser_window_set_pointer(bw, pointer);
return;
}
}
if (bw->drag_type == DRAGGING_FRAME) {
browser_window_resize_frame(bw, bw->x + x, bw->y + y);
} else if (bw->drag_type == DRAGGING_PAGE_SCROLL) {
/* mouse movement since drag started */
int scrollx = bw->drag_start_x - x;
int scrolly = bw->drag_start_y - y;
/* new scroll offsets */
scrollx += bw->drag_start_scroll_x;
scrolly += bw->drag_start_scroll_y;
bw->drag_start_scroll_x = scrollx;
bw->drag_start_scroll_y = scrolly;
browser_window_set_scroll(bw, scrollx, scrolly);
} else {
assert(c != NULL);
content_mouse_track(c, bw, mouse, x, y);
}
}
/* exported interface documented in desktop/browser.h */
void browser_window_mouse_click(struct browser_window *bw,
browser_mouse_state mouse, int x, int y)
{
hlcache_handle *c = bw->current_content;
const char *status = NULL;
browser_pointer_shape pointer = BROWSER_POINTER_DEFAULT;
if (bw->children) {
/* Browser window has children (frames) */
struct browser_window *child;
int cur_child;
int children = bw->rows * bw->cols;
for (cur_child = 0; cur_child < children; cur_child++) {
child = &bw->children[cur_child];
if (x < child->x || y < child->y ||
child->x + child->width < x ||
child->y + child->height < y) {
/* Click not in this child */
continue;
}
/* It's this child that contains the click; pass it
* on to child. */
browser_window_mouse_click(child, mouse,
x - child->x + scrollbar_get_offset(
child->scroll_x),
y - child->y + scrollbar_get_offset(
child->scroll_y));
/* Mouse action was for this child, we're done */
return;
}
return;
}
if (!c)
return;
if (bw->scroll_x != NULL) {
int scr_x, scr_y;
browser_window_get_scrollbar_pos(bw, true, &scr_x, &scr_y);
scr_x = x - scr_x - scrollbar_get_offset(bw->scroll_x);
scr_y = y - scr_y - scrollbar_get_offset(bw->scroll_y);
if (scr_x > 0 && scr_x < browser_window_get_scrollbar_len(bw,
true) &&
scr_y > 0 && scr_y < SCROLLBAR_WIDTH) {
status = scrollbar_mouse_status_to_message(
scrollbar_mouse_action(
bw->scroll_x, mouse,
scr_x, scr_y));
pointer = BROWSER_POINTER_DEFAULT;
if (status != NULL)
browser_window_set_status(bw, status);
browser_window_set_pointer(bw, pointer);
return;
}
}
if (bw->scroll_y != NULL) {
int scr_x, scr_y;
browser_window_get_scrollbar_pos(bw, false, &scr_x, &scr_y);
scr_x = x - scr_x - scrollbar_get_offset(bw->scroll_x);
scr_y = y - scr_y - scrollbar_get_offset(bw->scroll_y);
if (scr_y > 0 && scr_y < browser_window_get_scrollbar_len(bw,
false) &&
scr_x > 0 && scr_x < SCROLLBAR_WIDTH) {
status = scrollbar_mouse_status_to_message(
scrollbar_mouse_action(
bw->scroll_y, mouse,
scr_x, scr_y));
pointer = BROWSER_POINTER_DEFAULT;
if (status != NULL)
browser_window_set_status(bw, status);
browser_window_set_pointer(bw, pointer);
return;
}
}
switch (content_get_type(c)) {
case CONTENT_HTML:
case CONTENT_TEXTPLAIN:
{
/* Give bw focus */
struct browser_window *root_bw = browser_window_get_root(bw);
if (bw != root_bw->focus) {
browser_window_remove_caret(bw, false);
browser_window_set_selection(bw, false, true);
root_bw->focus = bw;
}
/* Pass mouse action to content */
content_mouse_action(c, bw, mouse, x, y);
}
break;
default:
if (mouse & BROWSER_MOUSE_MOD_2) {
if (mouse & BROWSER_MOUSE_DRAG_2) {
guit->window->drag_save_object(bw->window, c,
GUI_SAVE_OBJECT_NATIVE);
} else if (mouse & BROWSER_MOUSE_DRAG_1) {
guit->window->drag_save_object(bw->window, c,
GUI_SAVE_OBJECT_ORIG);
}
} else if (mouse & (BROWSER_MOUSE_DRAG_1 |
BROWSER_MOUSE_DRAG_2)) {
browser_window_page_drag_start(bw, x, y);
browser_window_set_pointer(bw, BROWSER_POINTER_MOVE);
}
break;
}
}
/* exported interface documented in desktop/browser.h */
void browser_window_redraw_rect(struct browser_window *bw, int x, int y,
int width, int height)
{
content_request_redraw(bw->current_content, x, y, width, height);
}
/* exported interface documented in desktop/browser.h */
void browser_window_page_drag_start(struct browser_window *bw, int x, int y)
{
assert(bw != NULL);
browser_window_set_drag_type(bw, DRAGGING_PAGE_SCROLL, NULL);
bw->drag_start_x = x;
bw->drag_start_y = y;
if (bw->window != NULL) {
/* Front end window */
guit->window->get_scroll(bw->window, &bw->drag_start_scroll_x,
&bw->drag_start_scroll_y);
guit->window->scroll_start(bw->window);
} else {
/* Core managed browser window */
bw->drag_start_scroll_x = scrollbar_get_offset(bw->scroll_x);
bw->drag_start_scroll_y = scrollbar_get_offset(bw->scroll_y);
}
}
/* exported interface documented in desktop/browser.h */
bool browser_window_back_available(struct browser_window *bw)
{
return (bw && bw->history &&
browser_window_history_back_available(bw));
}
/* exported interface documented in desktop/browser.h */
bool browser_window_forward_available(struct browser_window *bw)
{
return (bw && bw->history &&
browser_window_history_forward_available(bw));
}
/* exported interface documented in desktop/browser.h */
bool browser_window_reload_available(struct browser_window *bw)
{
return (bw && bw->current_content && !bw->loading_content);
}
/* exported interface documented in desktop/browser.h */
bool browser_window_stop_available(struct browser_window *bw)
{
return (bw && (bw->loading_content ||
(bw->current_content &&
(content_get_status(bw->current_content) !=
CONTENT_STATUS_DONE))));
}
/* exported interface documented in browser.h */
nserror browser_set_dpi(int dpi)
{
nscss_screen_dpi = INTTOFIX(dpi);
return NSERROR_OK;
}
/* exported interface documented in browser.h */
int browser_get_dpi(void)
{
return FIXTOINT(nscss_screen_dpi);
}
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