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/*
* This file is part of NetSurf, http://netsurf.sourceforge.net/
* Licensed under the GNU General Public License,
* http://www.opensource.org/licenses/gpl-license
* Copyright 2004 James Bursa <bursa@users.sourceforge.net>
*/
/** \file
* Content for text/html (implementation).
*/
#include <assert.h>
#include <ctype.h>
#include <string.h>
#include <strings.h>
#include <stdlib.h>
#include "libxml/parserInternals.h"
#include "netsurf/utils/config.h"
#include "netsurf/content/content.h"
#include "netsurf/content/fetch.h"
#include "netsurf/content/fetchcache.h"
#include "netsurf/desktop/imagemap.h"
#include "netsurf/desktop/gui.h"
#include "netsurf/desktop/options.h"
#include "netsurf/render/box.h"
#include "netsurf/render/font.h"
#include "netsurf/render/html.h"
#include "netsurf/render/layout.h"
#include "netsurf/utils/log.h"
#include "netsurf/utils/messages.h"
#include "netsurf/utils/url.h"
#include "netsurf/utils/utils.h"
#define CHUNK 4096
static void html_convert_css_callback(content_msg msg, struct content *css,
void *p1, void *p2, union content_msg_data data);
static void html_head(struct content *c, xmlNode *head);
static void html_find_stylesheets(struct content *c, xmlNode *head);
static void html_object_callback(content_msg msg, struct content *object,
void *p1, void *p2, union content_msg_data data);
static void html_object_done(struct box *box, struct content *object,
bool background);
static bool html_object_type_permitted(const content_type type,
const content_type *permitted_types);
/**
* Create a CONTENT_HTML.
*
* The content_html_data structure is initialized and the HTML parser is
* created.
*/
bool html_create(struct content *c, const char *params[])
{
unsigned int i;
struct content_html_data *html = &c->data.html;
union content_msg_data msg_data;
xmlCharEncoding encXML = XML_CHAR_ENCODING_NONE;
const char *encStr = NULL;
html->encoding = NULL;
html->getenc = true;
for (i = 0; params[i]; i += 2) {
if (strcasecmp(params[i], "charset") == 0) {
encXML = xmlParseCharEncoding(params[i + 1]);
if (encXML != XML_CHAR_ENCODING_ERROR
&& encXML != XML_CHAR_ENCODING_NONE) {
/* encoding specified - trust the server... */
html->encoding = xstrdup(xmlGetCharEncodingName(encXML));
html->getenc = false;
} else {
encStr = xstrdup(params[i + 1]);
}
break;
}
}
html->parser = htmlCreatePushParserCtxt(0, 0, "", 0, 0, encXML);
if (encStr != NULL) {
xmlCharEncodingHandlerPtr handler;
if ((handler = xmlFindCharEncodingHandler(encStr)) != NULL) {
if (xmlSwitchToEncoding(html->parser, handler) == 0) {
html->encoding = encStr;
html->getenc = false;
} else {
LOG(("xmlSwitchToEncoding failed for <%s>\n", encStr));
free((void *)encStr);
}
} else {
LOG(("xmlFindCharEncodingHandler() failed for <%s>\n", encStr));
free((void *)encStr);
}
}
html->base_url = xstrdup(c->url);
html->base_url = strdup(c->url);
html->layout = 0;
html->background_colour = TRANSPARENT;
html->stylesheet_count = 0;
html->stylesheet_content = 0;
html->style = 0;
html->fonts = 0;
html->object_count = 0;
html->object = 0;
html->imagemaps = 0;
html->string_pool = pool_create(8000);
html->box_pool = pool_create(sizeof (struct box) * 100);
html->bw = 0;
if (!html->parser || !html->base_url || !html->string_pool ||
!html->box_pool) {
htmlFreeParserCtxt(html->parser);
free(html->base_url);
if (html->string_pool)
pool_destroy(html->string_pool);
if (html->box_pool)
pool_destroy(html->box_pool);
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
warn_user("NoMemory", 0);
return false;
}
return true;
}
/**
* Process data for CONTENT_HTML.
*
* The data is parsed in chunks of size CHUNK, multitasking in between.
*/
bool html_process_data(struct content *c, char *data, unsigned int size)
{
unsigned long x;
/* First time through, check if we need to detect the encoding
* if so, detect it and reset the parser instance with it.
* Do this detection only once.
*/
if (c->data.html.getenc) {
xmlCharEncoding encoding = xmlDetectCharEncoding(data, size);
if (encoding != XML_CHAR_ENCODING_ERROR &&
encoding != XML_CHAR_ENCODING_NONE) {
xmlSwitchEncoding(c->data.html.parser, encoding);
c->data.html.encoding = xstrdup(xmlGetCharEncodingName(encoding));
}
c->data.html.getenc = false;
}
for (x = 0; x + CHUNK <= size; x += CHUNK) {
htmlParseChunk(c->data.html.parser, data + x, CHUNK, 0);
gui_multitask();
}
htmlParseChunk(c->data.html.parser, data + x, (int) (size - x), 0);
return true;
}
/**
* Convert a CONTENT_HTML for display.
*
* The following steps are carried out in order:
*
* - parsing to an XML tree is completed
* - stylesheets are fetched
* - the XML tree is converted to a box tree and object fetches are started
* - the box tree is laid out
*
* On exit, the content status will be either CONTENT_STATUS_DONE if the
* document is completely loaded or CONTENT_STATUS_READY if objects are still
* being fetched.
*/
bool html_convert(struct content *c, int width, int height)
{
xmlDoc *document;
xmlNode *html, *head;
union content_msg_data msg_data;
/* finish parsing */
htmlParseChunk(c->data.html.parser, "", 0, 1);
document = c->data.html.parser->myDoc;
/*xmlDebugDumpDocument(stderr, c->data.html.parser->myDoc);*/
htmlFreeParserCtxt(c->data.html.parser);
c->data.html.parser = 0;
if (!document) {
LOG(("Parsing failed"));
msg_data.error = messages_get("ParsingFail");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
warn_user("ParsingFail", 0);
return false;
}
/* Last change to pick the Content-Type charset information if the
* server didn't send it (or we're reading the HTML from disk)
*/
if (c->data.html.encoding == NULL && document->encoding != NULL)
c->data.html.encoding = xstrdup(document->encoding);
/* locate html and head elements */
for (html = document->children;
html != 0 && html->type != XML_ELEMENT_NODE;
html = html->next)
;
if (html == 0 || strcmp((const char *) html->name, "html") != 0) {
LOG(("html element not found"));
xmlFreeDoc(document);
msg_data.error = messages_get("ParsingFail");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
warn_user("ParsingFail", 0);
return false;
}
for (head = html->children;
head != 0 && head->type != XML_ELEMENT_NODE;
head = head->next)
;
if (strcmp((const char *) head->name, "head") != 0) {
head = 0;
LOG(("head element not found"));
}
if (head != 0)
html_head(c, head);
/* get stylesheets */
html_find_stylesheets(c, head);
/* convert xml tree to box tree */
LOG(("XML to box"));
content_set_status(c, messages_get("Processing"));
content_broadcast(c, CONTENT_MSG_STATUS, msg_data);
xml_to_box(html, c);
/*box_dump(c->data.html.layout->children, 0);*/
/* extract image maps - can't do this sensibly in xml_to_box */
imagemap_extract(html, c);
/*imagemap_dump(c);*/
/* XML tree not required past this point */
xmlFreeDoc(document);
/* layout the box tree */
content_set_status(c, messages_get("Formatting"));
content_broadcast(c, CONTENT_MSG_STATUS, msg_data);
LOG(("Layout document"));
layout_document(c->data.html.layout, width,
c->data.html.box_pool);
/*box_dump(c->data.html.layout->children, 0);*/
c->width = c->data.html.layout->descendant_x1;
c->height = c->data.html.layout->descendant_y1;
if (c->active == 0) {
c->status = CONTENT_STATUS_DONE;
content_set_status(c, messages_get("Done"));
} else {
c->status = CONTENT_STATUS_READY;
content_set_status(c, messages_get("FetchObjs"), c->active);
}
return true;
}
/**
* Process elements in <head>.
*
* \param c content structure
* \param head xml node of head element
*
* The title and base href are extracted if present.
*/
void html_head(struct content *c, xmlNode *head)
{
xmlNode *node;
c->title = 0;
for (node = head->children; node != 0; node = node->next) {
if (node->type != XML_ELEMENT_NODE)
continue;
if (!c->title && strcmp(node->name, "title") == 0) {
xmlChar *title = xmlNodeGetContent(node);
c->title = squash_whitespace(title);
xmlFree(title);
} else if (strcmp(node->name, "base") == 0) {
char *href = (char *) xmlGetProp(node, (const xmlChar *) "href");
if (href) {
char *url;
url_func_result res;
res = url_normalize(href, &url);
if (res == URL_FUNC_OK) {
free(c->data.html.base_url);
c->data.html.base_url = url;
}
xmlFree(href);
}
}
}
}
/**
* Process inline stylesheets and fetch linked stylesheets.
*
* \param c content structure
* \param head xml node of head element, or 0 if none
*/
void html_find_stylesheets(struct content *c, xmlNode *head)
{
xmlNode *node, *node2;
char *rel, *type, *media, *href, *data, *url;
unsigned int i = STYLESHEET_START;
unsigned int last_active = 0;
union content_msg_data msg_data;
url_func_result res;
/* stylesheet 0 is the base style sheet,
* stylesheet 1 is the adblocking stylesheet,
* stylesheet 2 is any <style> elements */
c->data.html.stylesheet_content = xcalloc(STYLESHEET_START, sizeof(*c->data.html.stylesheet_content));
c->data.html.stylesheet_content[STYLESHEET_ADBLOCK] = 0;
c->data.html.stylesheet_content[STYLESHEET_STYLE] = 0;
c->data.html.stylesheet_count = STYLESHEET_START;
c->active = 0;
c->data.html.stylesheet_content[STYLESHEET_BASE] = fetchcache(
default_stylesheet_url,
html_convert_css_callback, c,
(void *) STYLESHEET_BASE, c->width, c->height,
true, 0, 0, false);
assert(c->data.html.stylesheet_content[STYLESHEET_BASE]);
c->active++;
fetchcache_go(c->data.html.stylesheet_content[STYLESHEET_BASE], 0,
html_convert_css_callback, c,
(void *) STYLESHEET_BASE, 0, 0, false);
if (option_block_ads) {
c->data.html.stylesheet_content[STYLESHEET_ADBLOCK] = fetchcache(
adblock_stylesheet_url,
html_convert_css_callback, c,
(void *) STYLESHEET_ADBLOCK, c->width,
c->height, true, 0, 0, false);
if (c->data.html.stylesheet_content[STYLESHEET_ADBLOCK]) {
c->active++;
fetchcache_go(c->data.html.stylesheet_content[STYLESHEET_ADBLOCK],
0, html_convert_css_callback, c,
(void *) STYLESHEET_ADBLOCK, 0, 0, false);
}
}
for (node = head == 0 ? 0 : head->children; node != 0; node = node->next) {
if (node->type != XML_ELEMENT_NODE)
continue;
if (strcmp(node->name, "link") == 0) {
/* rel='stylesheet' */
if ((rel = (char *) xmlGetProp(node, (const xmlChar *) "rel")) == NULL)
continue;
if (strcasecmp(rel, "stylesheet") != 0) {
xmlFree(rel);
continue;
}
xmlFree(rel);
/* type='text/css' or not present */
if ((type = (char *) xmlGetProp(node, (const xmlChar *) "type")) != NULL) {
if (strcmp(type, "text/css") != 0) {
xmlFree(type);
continue;
}
xmlFree(type);
}
/* media contains 'screen' or 'all' or not present */
if ((media = (char *) xmlGetProp(node, (const xmlChar *) "media")) != NULL) {
if (strstr(media, "screen") == 0 &&
strstr(media, "all") == 0) {
xmlFree(media);
continue;
}
xmlFree(media);
}
/* href='...' */
if ((href = (char *) xmlGetProp(node, (const xmlChar *) "href")) == NULL)
continue;
/* TODO: only the first preferred stylesheets (ie. those with a
* title attribute) should be loaded (see HTML4 14.3) */
res = url_join(href, c->data.html.base_url, &url);
xmlFree(href);
if (res != URL_FUNC_OK)
continue;
LOG(("linked stylesheet %i '%s'", i, url));
/* start fetch */
c->data.html.stylesheet_content = xrealloc(c->data.html.stylesheet_content,
(i + 1) * sizeof(*c->data.html.stylesheet_content));
c->data.html.stylesheet_content[i] = fetchcache(url,
html_convert_css_callback,
c, (void *) i, c->width, c->height,
true, 0, 0, false);
if (c->data.html.stylesheet_content[i]) {
c->active++;
fetchcache_go(c->data.html.stylesheet_content[i],
c->url,
html_convert_css_callback,
c, (void *) i,
0, 0, false);
}
free(url);
i++;
} else if (strcmp(node->name, "style") == 0) {
/* type='text/css', or not present (invalid but common) */
if ((type = (char *) xmlGetProp(node, (const xmlChar *) "type")) != NULL) {
if (strcmp(type, "text/css") != 0) {
xmlFree(type);
continue;
}
xmlFree(type);
}
/* media contains 'screen' or 'all' or not present */
if ((media = (char *) xmlGetProp(node, (const xmlChar *) "media")) != NULL) {
if (strstr(media, "screen") == 0 &&
strstr(media, "all") == 0) {
xmlFree(media);
continue;
}
xmlFree(media);
}
/* create stylesheet */
LOG(("style element"));
if (c->data.html.stylesheet_content[STYLESHEET_STYLE] == 0) {
const char *params[] = { 0 };
c->data.html.stylesheet_content[STYLESHEET_STYLE] =
content_create(c->data.html.
base_url);
if (!c->data.html.stylesheet_content[STYLESHEET_STYLE])
return;
if (!content_set_type(c->data.html.
stylesheet_content[STYLESHEET_STYLE],
CONTENT_CSS, "text/css",
params))
return;
}
/* can't just use xmlNodeGetContent(node), because that won't give
* the content of comments which may be used to 'hide' the content */
for (node2 = node->children; node2 != 0; node2 = node2->next) {
data = xmlNodeGetContent(node2);
if (!content_process_data(c->data.html.
stylesheet_content[STYLESHEET_STYLE],
data, strlen(data))) {
xmlFree(data);
return;
}
xmlFree(data);
}
}
}
c->data.html.stylesheet_count = i;
if (c->data.html.stylesheet_content[STYLESHEET_STYLE] != 0) {
if (css_convert(c->data.html.stylesheet_content[STYLESHEET_STYLE], c->width,
c->height)) {
content_add_user(c->data.html.stylesheet_content[STYLESHEET_STYLE],
html_convert_css_callback,
c, (void *) STYLESHEET_STYLE);
} else {
/* conversion failed */
c->data.html.stylesheet_content[STYLESHEET_STYLE] = 0;
}
}
/* complete the fetches */
while (c->active != 0) {
if (c->active != last_active) {
content_set_status(c, messages_get("FetchStyle"),
c->active);
content_broadcast(c, CONTENT_MSG_STATUS, msg_data);
last_active = c->active;
}
fetch_poll();
gui_multitask();
}
/* if (c->error) { */
/* content_set_status(c, "Warning: some stylesheets failed to load"); */
/* content_broadcast(c, CONTENT_MSG_STATUS, msg_data); */
/* } */
}
/**
* Callback for fetchcache() for linked stylesheets.
*/
void html_convert_css_callback(content_msg msg, struct content *css,
void *p1, void *p2, union content_msg_data data)
{
struct content *c = p1;
unsigned int i = (unsigned int) p2;
switch (msg) {
case CONTENT_MSG_LOADING:
/* check that the stylesheet is really CSS */
if (css->type != CONTENT_CSS) {
c->data.html.stylesheet_content[i] = 0;
c->active--;
content_add_error(c, "NotCSS", 0);
content_set_status(c, messages_get("NotCSS"));
content_broadcast(c, CONTENT_MSG_STATUS, data);
content_remove_user(css, html_convert_css_callback, c, (void*)i);
}
break;
case CONTENT_MSG_READY:
break;
case CONTENT_MSG_DONE:
LOG(("got stylesheet '%s'", css->url));
c->active--;
break;
case CONTENT_MSG_ERROR:
c->data.html.stylesheet_content[i] = 0;
c->active--;
content_add_error(c, "?", 0);
break;
case CONTENT_MSG_STATUS:
content_set_status(c, messages_get("FetchStyle2"),
c->active, css->status_message);
content_broadcast(c, CONTENT_MSG_STATUS, data);
break;
case CONTENT_MSG_REDIRECT:
c->active--;
c->data.html.stylesheet_content[i] = fetchcache(
data.redirect,
html_convert_css_callback,
c, (void *) i, css->width, css->height,
true, 0, 0, false);
if (c->data.html.stylesheet_content[i]) {
c->active++;
fetchcache_go(c->data.html.stylesheet_content[i],
c->url,
html_convert_css_callback,
c, (void *) i,
0, 0, false);
}
break;
case CONTENT_MSG_NEWPTR:
c->data.html.stylesheet_content[i] = css;
break;
#ifdef WITH_AUTH
case CONTENT_MSG_AUTH:
c->data.html.stylesheet_content[i] = 0;
c->active--;
content_add_error(c, "?", 0);
break;
#endif
default:
assert(0);
}
}
/**
* Start a fetch for an object required by a page.
*
* \param c content structure
* \param url URL of object to fetch (not copied, must be on heap)
* \param box box that will contain the object
* \param permitted_types array of types, terminated by CONTENT_UNKNOWN,
* or 0 if all types except OTHER and UNKNOWN acceptable
* \param available_width estimate of width of object
* \param available_height estimate of height of object
* \param background this is a background image
*/
void html_fetch_object(struct content *c, char *url, struct box *box,
const content_type *permitted_types,
int available_width, int available_height,
bool background)
{
unsigned int i = c->data.html.object_count;
/* add to object list */
c->data.html.object = xrealloc(c->data.html.object,
(i + 1) * sizeof(*c->data.html.object));
c->data.html.object[i].url = url;
c->data.html.object[i].box = box;
c->data.html.object[i].permitted_types = permitted_types;
c->data.html.object[i].background = background;
/* start fetch */
c->data.html.object[i].content = fetchcache(url, html_object_callback,
c, (void *) i, available_width, available_height,
true, 0, 0, false);
if (c->data.html.object[i].content) {
c->active++;
fetchcache_go(c->data.html.object[i].content, c->url,
html_object_callback, c, (void *) i,
0, 0, false);
}
c->data.html.object_count++;
}
/**
* Callback for fetchcache() for objects.
*/
void html_object_callback(content_msg msg, struct content *object,
void *p1, void *p2, union content_msg_data data)
{
struct content *c = p1;
unsigned int i = (unsigned int) p2;
int x, y;
struct box *box = c->data.html.object[i].box;
switch (msg) {
case CONTENT_MSG_LOADING:
/* check if the type is acceptable for this object */
if (html_object_type_permitted(object->type,
c->data.html.object[i].permitted_types)) {
if (c->data.html.bw)
content_open(object,
c->data.html.bw, c,
box,
box->object_params);
break;
}
/* not acceptable */
c->data.html.object[i].content = 0;
c->active--;
content_add_error(c, "?", 0);
content_set_status(c, messages_get("BadObject"));
content_broadcast(c, CONTENT_MSG_STATUS, data);
content_remove_user(object, html_object_callback, c, (void*)i);
break;
case CONTENT_MSG_READY:
if (object->type == CONTENT_HTML) {
html_object_done(box, object,
c->data.html.object[i].background);
if (c->status == CONTENT_STATUS_READY ||
c->status ==
CONTENT_STATUS_DONE)
content_reformat(c,
c->available_width, 0);
}
break;
case CONTENT_MSG_DONE:
html_object_done(box, object, c->data.html.object[i].background);
c->active--;
break;
case CONTENT_MSG_ERROR:
c->data.html.object[i].content = 0;
c->active--;
content_add_error(c, "?", 0);
content_set_status(c, messages_get("ObjError"),
data.error);
content_broadcast(c, CONTENT_MSG_STATUS, data);
break;
case CONTENT_MSG_STATUS:
content_set_status(c, messages_get("FetchObjs2"),
c->active, object->status_message);
/* content_broadcast(c, CONTENT_MSG_STATUS, 0); */
break;
case CONTENT_MSG_REDIRECT:
c->active--;
free(c->data.html.object[i].url);
c->data.html.object[i].url = xstrdup(data.redirect);
c->data.html.object[i].content = fetchcache(
data.redirect, html_object_callback,
c, (void * ) i, 0, 0, true, 0, 0,
false);
if (c->data.html.object[i].content) {
c->active++;
fetchcache_go(c->data.html.object[i].content,
c->url, html_object_callback,
c, (void * ) i,
0, 0, false);
}
break;
case CONTENT_MSG_REFORMAT:
break;
case CONTENT_MSG_REDRAW:
box_coords(box, &x, &y);
if (object == data.redraw.object) {
data.redraw.x = data.redraw.x *
box->width / object->width;
data.redraw.y = data.redraw.y *
box->height / object->height;
data.redraw.width = data.redraw.width *
box->width / object->width;
data.redraw.height = data.redraw.height *
box->height / object->height;
data.redraw.object_width = box->width;
data.redraw.object_height = box->height;
}
data.redraw.x += x + box->padding[LEFT];
data.redraw.y += y + box->padding[TOP];
data.redraw.object_x += x + box->padding[LEFT];
data.redraw.object_y += y + box->padding[TOP];
content_broadcast(c, CONTENT_MSG_REDRAW, data);
break;
case CONTENT_MSG_NEWPTR:
c->data.html.object[i].content = object;
break;
#ifdef WITH_AUTH
case CONTENT_MSG_AUTH:
c->data.html.object[i].content = 0;
c->active--;
content_add_error(c, "?", 0);
break;
#endif
default:
assert(0);
}
if (c->status == CONTENT_STATUS_READY && c->active == 0 &&
(msg == CONTENT_MSG_LOADING ||
msg == CONTENT_MSG_DONE ||
msg == CONTENT_MSG_ERROR ||
msg == CONTENT_MSG_REDIRECT ||
msg == CONTENT_MSG_AUTH)) {
/* all objects have arrived */
content_reformat(c, c->available_width, 0);
c->status = CONTENT_STATUS_DONE;
content_set_status(c, messages_get("Done"));
content_broadcast(c, CONTENT_MSG_DONE, data);
}
if (c->status == CONTENT_STATUS_READY)
content_set_status(c, messages_get("FetchObjs"), c->active);
}
/**
* Update a box whose content has completed rendering.
*/
void html_object_done(struct box *box, struct content *object,
bool background)
{
struct box *b;
if (background) {
box->background = object;
return;
}
box->object = object;
if (box->width != UNKNOWN_WIDTH &&
object->available_width != box->width)
content_reformat(object, box->width, box->height);
/* invalidate parent min, max widths */
for (b = box->parent; b; b = b->parent)
b->max_width = UNKNOWN_MAX_WIDTH;
/* delete any clones of this box */
while (box->next && box->next->clone) {
/* box_free_box(box->next); */
box->next = box->next->next;
}
}
/**
* Check if a type is in a list.
*
* \param type the content_type to search for
* \param permitted_types array of types, terminated by CONTENT_UNKNOWN,
* or 0 if all types except OTHER and UNKNOWN acceptable
* \return the type is in the list or acceptable
*/
bool html_object_type_permitted(const content_type type,
const content_type *permitted_types)
{
if (permitted_types) {
for (; *permitted_types != CONTENT_UNKNOWN; permitted_types++)
if (*permitted_types == type)
return true;
} else if (type < CONTENT_OTHER) {
return true;
}
return false;
}
/**
* Stop loading a CONTENT_HTML in state READY.
*/
void html_stop(struct content *c)
{
unsigned int i;
struct content *object;
assert(c->status == CONTENT_STATUS_READY);
for (i = 0; i != c->data.html.object_count; i++) {
object = c->data.html.object[i].content;
if (!object)
continue;
if (object->status == CONTENT_STATUS_DONE)
; /* already loaded: do nothing */
else if (object->status == CONTENT_STATUS_READY)
content_stop(object, html_object_callback,
c, (void *) i);
else {
content_remove_user(c->data.html.object[i].content,
html_object_callback, c, (void *) i);
c->data.html.object[i].content = 0;
}
}
c->status = CONTENT_STATUS_DONE;
}
/**
* Reformat a CONTENT_HTML to a new width.
*/
void html_reformat(struct content *c, int width, int height)
{
layout_document(c->data.html.layout, width,
c->data.html.box_pool);
c->width = c->data.html.layout->descendant_x1;
c->height = c->data.html.layout->descendant_y1;
}
/**
* Destroy a CONTENT_HTML and free all resources it owns.
*/
void html_destroy(struct content *c)
{
unsigned int i;
LOG(("content %p", c));
free(c->title);
imagemap_destroy(c);
if (c->data.html.parser)
htmlFreeParserCtxt(c->data.html.parser);
free(c->data.html.encoding);
free(c->data.html.base_url);
if (c->data.html.layout)
box_free(c->data.html.layout);
/* Free stylesheets */
if (c->data.html.stylesheet_count) {
for (i = 0; i != c->data.html.stylesheet_count; i++) {
if (c->data.html.stylesheet_content[i])
content_remove_user(c->data.html.
stylesheet_content[i],
html_convert_css_callback,
c, (void *) i);
}
}
free(c->data.html.stylesheet_content);
free(c->data.html.style);
if (c->data.html.fonts)
nsfont_free_set(c->data.html.fonts);
/* Free objects */
for (i = 0; i != c->data.html.object_count; i++) {
LOG(("object %i %p", i, c->data.html.object[i].content));
if (c->data.html.object[i].content)
content_remove_user(c->data.html.object[i].content,
html_object_callback, c, (void*)i);
free(c->data.html.object[i].url);
}
free(c->data.html.object);
pool_destroy(c->data.html.string_pool);
pool_destroy(c->data.html.box_pool);
}
/**
* Handle a window containing a CONTENT_HTML being opened.
*/
void html_open(struct content *c, struct browser_window *bw,
struct content *page, struct box *box,
struct object_params *params)
{
unsigned int i;
c->data.html.bw = bw;
for (i = 0; i != c->data.html.object_count; i++) {
if (c->data.html.object[i].content == 0)
continue;
if (c->data.html.object[i].content->type == CONTENT_UNKNOWN)
continue;
content_open(c->data.html.object[i].content,
bw, c,
c->data.html.object[i].box,
c->data.html.object[i].box->object_params);
}
}
/**
* Handle a window containing a CONTENT_HTML being closed.
*/
void html_close(struct content *c)
{
unsigned int i;
c->data.html.bw = 0;
for (i = 0; i != c->data.html.object_count; i++) {
if (c->data.html.object[i].content == 0)
continue;
if (c->data.html.object[i].content->type == CONTENT_UNKNOWN)
continue;
content_close(c->data.html.object[i].content);
}
}
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