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netsurf/render/html.c
Daniel Silverstone 6807b4208a Remove the netsurf/ from the include paths and rationalise use of <> vs "" in includes 
NetSurf includes are now done with ""s and other system includes with <>s as C intended.
The scandeps tool has been updated to only look for ""ed includes, and to verify that the
files exist in the tree before adding them to the dependency lines. The depend rule has
therefore been augmented to make sure the autogenerated files are built before it is run.

This is untested under self-hosted RISC OS builds. All else tested and works.


svn path=/trunk/netsurf/; revision=3307
2007-05-30 22:39:54 +00:00

1822 lines
49 KiB
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/*
* This file is part of NetSurf, http://netsurf-browser.org/
* Licensed under the GNU General Public License,
* http://www.opensource.org/licenses/gpl-license
* Copyright 2007 James Bursa <bursa@users.sourceforge.net>
*/
/** \file
* Content for text/html (implementation).
*/
#include <assert.h>
#include <ctype.h>
#include <stdint.h>
#include <string.h>
#include <strings.h>
#include <stdlib.h>
#include <libxml/parserInternals.h>
#include "utils/config.h"
#include "content/content.h"
#include "content/fetch.h"
#include "content/fetchcache.h"
#include "desktop/browser.h"
#include "desktop/gui.h"
#include "desktop/options.h"
#include "render/box.h"
#include "render/font.h"
#include "render/html.h"
#include "render/imagemap.h"
#include "render/layout.h"
#include "utils/log.h"
#include "utils/messages.h"
#include "utils/talloc.h"
#include "utils/url.h"
#include "utils/utils.h"
#define CHUNK 4096
static bool html_set_parser_encoding(struct content *c, const char *encoding);
static const char *html_detect_encoding(const char **data, unsigned int *size);
static void html_convert_css_callback(content_msg msg, struct content *css,
intptr_t p1, intptr_t p2, union content_msg_data data);
static bool html_meta_refresh(struct content *c, xmlNode *head);
static bool html_head(struct content *c, xmlNode *head);
static bool html_find_stylesheets(struct content *c, xmlNode *head);
static void html_object_callback(content_msg msg, struct content *object,
intptr_t p1, intptr_t p2, union content_msg_data data);
static void html_object_done(struct box *box, struct content *object,
bool background);
static void html_object_failed(struct box *box, struct content *content,
bool background);
static bool html_object_type_permitted(const content_type type,
const content_type *permitted_types);
static void html_object_refresh(void *p);
static void html_destroy_frameset(struct content_html_frames *frameset);
static void html_destroy_iframe(struct content_html_iframe *iframe);
static void html_set_status(struct content *c, const char *extra);
static void html_dump_frameset(struct content_html_frames *frame,
unsigned int depth);
static const char empty_document[] =
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01//EN\""
" \"http://www.w3.org/TR/html4/strict.dtd\">"
"<html>"
"<head>"
"<title>Empty document</title>"
"</head>"
"<body>"
"<h1>Empty document</h1>"
"<p>The document sent by the server is empty.</p>"
"</body>"
"</html>";
/**
* 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;
html->parser = 0;
html->encoding_handler = 0;
html->encoding = 0;
html->getenc = true;
html->base_url = c->url;
html->base_target = NULL;
html->layout = 0;
html->background_colour = TRANSPARENT;
html->stylesheet_count = 0;
html->stylesheet_content = 0;
html->style = 0;
html->working_stylesheet = 0;
html->object_count = 0;
html->object = 0;
html->forms = 0;
html->imagemaps = 0;
html->bw = 0;
html->frameset = 0;
html->iframe = 0;
html->page = 0;
html->index = 0;
html->box = 0;
for (i = 0; params[i]; i += 2) {
if (strcasecmp(params[i], "charset") == 0) {
html->encoding = talloc_strdup(c, params[i + 1]);
if (!html->encoding)
goto no_memory;
html->encoding_source = ENCODING_SOURCE_HEADER;
html->getenc = false;
break;
}
}
html->parser = htmlCreatePushParserCtxt(0, 0, "", 0, 0,
XML_CHAR_ENCODING_NONE);
if (!html->parser)
goto no_memory;
if (html->encoding) {
/* an encoding was specified in the Content-Type header */
if (!html_set_parser_encoding(c, html->encoding))
return false;
}
return true;
no_memory:
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
/**
* 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;
if (c->data.html.getenc) {
/* No encoding was specified in the Content-Type header.
* Attempt to detect if the encoding is not 8-bit. If the
* encoding is 8-bit, leave the parser unchanged, so that it
* searches for a <meta http-equiv="content-type"
* content="text/html; charset=...">. */
const char *encoding;
encoding = html_detect_encoding((const char **) &data, &size);
if (encoding) {
if (!html_set_parser_encoding(c, encoding))
return false;
c->data.html.encoding = talloc_strdup(c, encoding);
if (!c->data.html.encoding)
return false;
c->data.html.encoding_source =
ENCODING_SOURCE_DETECTED;
}
c->data.html.getenc = false;
/* The data we received may have solely consisted of a BOM.
* If so, it will have been stripped by html_detect_encoding.
* Therefore, we'll have nothing to do in that case. */
if (size == 0)
return true;
}
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);
if (!c->data.html.encoding && c->data.html.parser->input->encoding) {
/* The encoding was not in headers or detected,
* and the parser found a <meta http-equiv="content-type"
* content="text/html; charset=...">. */
/* However, if that encoding is non-ASCII-compatible,
* ignore it, as it can't possibly be correct */
if (strncasecmp(c->data.html.parser->input->encoding,
"UTF-16", 6) == 0 || /* UTF-16(LE|BE)? */
strncasecmp(c->data.html.parser->input->encoding,
"UTF-32", 6) == 0) { /* UTF-32(LE|BE)? */
c->data.html.encoding = talloc_strdup(c, "ISO-8859-1");
c->data.html.encoding_source =
ENCODING_SOURCE_DETECTED;
} else {
c->data.html.encoding = talloc_strdup(c,
c->data.html.parser->input->encoding);
c->data.html.encoding_source = ENCODING_SOURCE_META;
}
if (!c->data.html.encoding) {
union content_msg_data msg_data;
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
/* have the encoding; don't attempt to detect it */
c->data.html.getenc = false;
/* now, we must reset the parser such that it reparses
* using the correct charset, and then reparse any document
* source we've got. we achieve this by recreating the
* parser in its entirety as this is simpler than resetting
* the existing one and ensuring it's still set up correctly.
*/
if (c->data.html.parser->myDoc)
xmlFreeDoc(c->data.html.parser->myDoc);
htmlFreeParserCtxt(c->data.html.parser);
c->data.html.parser = htmlCreatePushParserCtxt(0, 0, "", 0,
0, XML_CHAR_ENCODING_NONE);
if (!c->data.html.parser) {
union content_msg_data msg_data;
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
if (!html_set_parser_encoding(c, c->data.html.encoding))
return false;
/* and reparse received document source - the recursion
* is safe as we've just set c->data.html.encoding so
* we'll never get back in here. */
if (!html_process_data(c, c->source_data, c->source_size))
return false;
}
return true;
}
/**
* Set the HTML parser character encoding.
*
* \param c content of type CONTENT_HTML
* \param encoding name of encoding
* \return true on success, false on error and error reported
*/
bool html_set_parser_encoding(struct content *c, const char *encoding)
{
struct content_html_data *html = &c->data.html;
xmlError *error;
char error_message[500];
union content_msg_data msg_data;
html->encoding_handler = xmlFindCharEncodingHandler(encoding);
if (!html->encoding_handler) {
/* either out of memory, or no handler available */
/* assume no handler available, which is not a fatal error */
LOG(("no encoding handler for \"%s\"", encoding));
/* \todo warn user and ask them to install iconv? */
return true;
}
xmlCtxtResetLastError(html->parser);
if (xmlSwitchToEncoding(html->parser, html->encoding_handler)) {
error = xmlCtxtGetLastError(html->parser);
snprintf(error_message, sizeof error_message,
"%s xmlSwitchToEncoding(): %s",
messages_get("MiscError"),
error ? error->message : "failed");
msg_data.error = error_message;
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
/* Dirty hack to get around libxml oddness:
* 1) When creating a push parser context, the input flow's encoding
* string is not set (whether an encoding is specified or not)
* 2) When switching encoding (as above), the input flow's encoding
* string is never changed
* 3) When handling a meta charset, the input flow's encoding string
* is checked to determine if an encoding has already been set.
* If it has been set, then the meta charset is ignored.
*
* The upshot of this is that, if we don't explicitly set the input
* flow's encoding string here, any meta charset in the document
* will override our setting, which is incorrect behaviour.
*
* Ideally, this would be fixed in libxml, but that requires rather
* more knowledge than I currently have of what libxml is doing.
*/
if (!html->parser->input->encoding)
html->parser->input->encoding =
xmlStrdup((const xmlChar *) encoding);
/* Ensure noone else attempts to reset the encoding */
html->getenc = false;
return true;
}
/**
* Attempt to detect the encoding of some HTML data.
*
* \param data Pointer to HTML source data
* \param size Pointer to length of data
* \return a constant string giving the encoding, or 0 if the encoding
* appears to be some 8-bit encoding
*
* If a BOM is encountered, *data and *size will be modified to skip over it
*/
const char *html_detect_encoding(const char **data, unsigned int *size)
{
const unsigned char *d = (const unsigned char *) *data;
/* this detection assumes that the first two characters are <= 0xff */
if (*size < 4)
return 0;
if (d[0] == 0x00 && d[1] == 0x00 &&
d[2] == 0xfe && d[3] == 0xff) { /* BOM 00 00 fe ff */
*data += 4;
*size -= 4;
return "UTF-32BE";
} else if (d[0] == 0xff && d[1] == 0xfe &&
d[2] == 0x00 && d[3] == 0x00) { /* BOM ff fe 00 00 */
*data += 4;
*size -= 4;
return "UTF-32LE";
}
else if (d[0] == 0x00 && d[1] != 0x00 &&
d[2] == 0x00 && d[3] != 0x00) /* 00 xx 00 xx */
return "UTF-16BE";
else if (d[0] != 0x00 && d[1] == 0x00 &&
d[2] != 0x00 && d[3] == 0x00) /* xx 00 xx 00 */
return "UTF-16LE";
else if (d[0] == 0x00 && d[1] == 0x00 &&
d[2] == 0x00 && d[3] != 0x00) /* 00 00 00 xx */
return "ISO-10646-UCS-4";
else if (d[0] != 0x00 && d[1] == 0x00 &&
d[2] == 0x00 && d[3] == 0x00) /* xx 00 00 00 */
return "ISO-10646-UCS-4";
else if (d[0] == 0xfe && d[1] == 0xff) { /* BOM fe ff */
*data += 2;
*size -= 2;
return "UTF-16BE";
} else if (d[0] == 0xfe && d[1] == 0xff) { /* BOM ff fe */
*data += 2;
*size -= 2;
return "UTF-16LE";
} else if (d[0] == 0xef && d[1] == 0xbb &&
d[2] == 0xbf) { /* BOM ef bb bf */
*data += 3;
*size -= 3;
return "UTF-8";
}
return 0;
}
/**
* 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 */
if (c->source_size == 0)
htmlParseChunk(c->data.html.parser, empty_document,
sizeof empty_document, 0);
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);
return false;
}
/* 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);
return false;
}
for (head = html->children;
head != 0 && head->type != XML_ELEMENT_NODE;
head = head->next)
;
if (head && strcmp((const char *) head->name, "head") != 0) {
head = 0;
LOG(("head element not found"));
}
if (head) {
if (!html_head(c, head)) {
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
/* handle meta refresh */
if (!html_meta_refresh(c, head))
return false;
}
/* get stylesheets */
if (!html_find_stylesheets(c, head))
return false;
/* 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);
if (!xml_to_box(html, c)) {
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
/*box_dump(c->data.html.layout->children, 0);*/
/*if (c->data.html.frameset)
html_dump_frameset(c->data.html.frameset, 0);*/
/* extract image maps - can't do this sensibly in xml_to_box */
if (!imagemap_extract(html, c)) {
LOG(("imagemap extraction failed"));
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
/*imagemap_dump(c);*/
/* XML tree not required past this point */
xmlFreeDoc(document);
/* layout the box tree */
html_set_status(c, messages_get("Formatting"));
content_broadcast(c, CONTENT_MSG_STATUS, msg_data);
LOG(("Layout document"));
html_reformat(c, width, height);
/*box_dump(c->data.html.layout->children, 0);*/
if (c->active == 0)
c->status = CONTENT_STATUS_DONE;
else
c->status = CONTENT_STATUS_READY;
html_set_status(c, "");
return true;
}
/**
* Process elements in <head>.
*
* \param c content structure
* \param head xml node of head element
* \return true on success, false on memory exhaustion
*
* The title and base href are extracted if present.
*/
bool html_head(struct content *c, xmlNode *head)
{
xmlNode *node;
xmlChar *s;
c->title = 0;
for (node = head->children; node != 0; node = node->next) {
if (node->type != XML_ELEMENT_NODE)
continue;
LOG(("Node: %s", node->name));
if (!c->title && strcmp(node->name, "title") == 0) {
xmlChar *title = xmlNodeGetContent(node);
if (!title)
return false;
char *title2 = squash_whitespace(title);
xmlFree(title);
if (!title2)
return false;
c->title = talloc_strdup(c, title2);
free(title2);
if (!c->title)
return false;
} 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) {
c->data.html.base_url =
talloc_strdup(c, url);
free(url);
}
xmlFree(href);
}
/* don't use the central values to ease freeing later on */
if ((s = xmlGetProp(node, (const xmlChar *) "target"))) {
if ((!strcasecmp(s, "_blank")) || (!strcasecmp(s, "_top")) ||
(!strcasecmp(s, "_parent")) ||
(!strcasecmp(s, "_self")) ||
('a' <= s[0] && s[0] <= 'z') ||
('A' <= s[0] && s[0] <= 'Z')) { /* [6.16] */
c->data.html.base_target = talloc_strdup(c, s);
if (!c->data.html.base_target) {
xmlFree(s);
return false;
}
}
xmlFree(s);
}
}
}
return true;
}
/**
* Search for meta refresh
*
* http://wp.netscape.com/assist/net_sites/pushpull.html
*
* \param c content structure
* \param head xml node of head element
* \return true on success, false otherwise (error reported)
*/
bool html_meta_refresh(struct content *c, xmlNode *head)
{
xmlNode *n;
xmlChar *equiv, *content;
union content_msg_data msg_data;
char *url, *end, *refresh;
url_func_result res;
for (n = head == 0 ? 0 : head->children; n; n = n->next) {
if (n->type != XML_ELEMENT_NODE)
continue;
if (strcmp((const char *)n->name, "meta"))
continue;
equiv = xmlGetProp(n, (const xmlChar *)"http-equiv");
if (!equiv)
continue;
if (strcasecmp((const char *)equiv, "refresh")) {
xmlFree(equiv);
continue;
}
xmlFree(equiv);
content = xmlGetProp(n, (const xmlChar *)"content");
if (!content)
continue;
end = (char *)content + strlen(content);
msg_data.delay = (int)strtol((char *) content, &url, 10);
/* a very small delay and self-referencing URL can cause a loop
* that grinds machines to a halt. To prevent this we set a
* minimum refresh delay of 1s. */
if (msg_data.delay < 1)
msg_data.delay = 1;
if (url == end) {
/* Just delay specified, so refresh current page */
xmlFree(content);
c->refresh = talloc_strdup(c, c->url);
if (!c->refresh) {
msg_data.error = messages_get("NoMemory");
content_broadcast(c,
CONTENT_MSG_ERROR, msg_data);
return false;
}
content_broadcast(c, CONTENT_MSG_REFRESH, msg_data);
break;
}
for ( ; url <= end - 4; url++) {
if (!strncasecmp(url, "url=", 4)) {
url += 4;
break;
}
}
/* various sites contain junk meta refresh URL components,
* so attempt to deal with this by stripping likely garbage
* from the beginning and end of URLs */
while (url < end) {
if (isspace(*url) || *url == '\'' || *url == '"')
url++;
else
break;
}
while (end > url) {
if (isspace(end[-1]) || end[-1] == '\'' ||
end[-1] == '"')
*--end = '\0';
else
break;
}
if (url < end) {
res = url_join(url, c->data.html.base_url, &refresh);
xmlFree(content);
if (res == URL_FUNC_NOMEM) {
msg_data.error = messages_get("NoMemory");
content_broadcast(c,
CONTENT_MSG_ERROR, msg_data);
return false;
} else if (res == URL_FUNC_FAILED) {
/* This isn't fatal so carry on looking */
continue;
}
c->refresh = talloc_strdup(c, refresh);
free(refresh);
if (!c->refresh) {
msg_data.error = messages_get("NoMemory");
content_broadcast(c,
CONTENT_MSG_ERROR, msg_data);
return false;
}
content_broadcast(c, CONTENT_MSG_REFRESH, msg_data);
break;
}
xmlFree(content);
}
return true;
}
/**
* Process inline stylesheets and fetch linked stylesheets.
*
* \param c content structure
* \param head xml node of head element, or 0 if none
* \return true on success, false if an error occurred
*/
bool 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;
struct content **stylesheet_content;
/* stylesheet 0 is the base style sheet,
* stylesheet 1 is the adblocking stylesheet,
* stylesheet 2 is any <style> elements */
c->data.html.stylesheet_content = talloc_array(c, struct content *,
STYLESHEET_START);
if (!c->data.html.stylesheet_content)
goto no_memory;
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, (intptr_t) c,
STYLESHEET_BASE, c->width, c->height,
true, 0, 0, false, false);
if (!c->data.html.stylesheet_content[STYLESHEET_BASE])
goto no_memory;
c->active++;
fetchcache_go(c->data.html.stylesheet_content[STYLESHEET_BASE],
c->url, html_convert_css_callback, (intptr_t) c,
STYLESHEET_BASE, c->width, c->height,
0, 0, false, 0);
if (option_block_ads) {
c->data.html.stylesheet_content[STYLESHEET_ADBLOCK] =
fetchcache(adblock_stylesheet_url,
html_convert_css_callback, (intptr_t) c,
STYLESHEET_ADBLOCK, c->width,
c->height, true, 0, 0, false, false);
if (!c->data.html.stylesheet_content[STYLESHEET_ADBLOCK])
goto no_memory;
c->active++;
fetchcache_go(c->data.html.
stylesheet_content[STYLESHEET_ADBLOCK],
c->url, html_convert_css_callback,
(intptr_t) c, STYLESHEET_ADBLOCK, c->width,
c->height, 0, 0, false, 0);
}
for (node = head == 0 ? 0 : head->children; node; node = node->next) {
if (node->type != XML_ELEMENT_NODE)
continue;
if (strcmp(node->name, "link") == 0) {
/* rel=<space separated list, including 'stylesheet'> */
if ((rel = (char *) xmlGetProp(node, (const xmlChar *) "rel")) == NULL)
continue;
if (strcasestr(rel, "stylesheet") == 0) {
xmlFree(rel);
continue;
} else if (strcasestr(rel, "alternate")) {
/* Ignore alternate stylesheets */
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 (strcasestr(media, "screen") == 0 &&
strcasestr(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 */
stylesheet_content = talloc_realloc(c,
c->data.html.stylesheet_content,
struct content *, i + 1);
if (!stylesheet_content)
goto no_memory;
c->data.html.stylesheet_content = stylesheet_content;
c->data.html.stylesheet_content[i] = fetchcache(url,
html_convert_css_callback,
(intptr_t) c, i, c->width, c->height,
true, 0, 0, false, false);
if (!c->data.html.stylesheet_content[i])
goto no_memory;
c->active++;
fetchcache_go(c->data.html.stylesheet_content[i],
c->url,
html_convert_css_callback,
(intptr_t) c, i, c->width, c->height,
0, 0, false, c->url);
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 (strcasestr(media, "screen") == 0 &&
strcasestr(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])
goto no_memory;
if (!content_set_type(c->data.html.
stylesheet_content[STYLESHEET_STYLE],
CONTENT_CSS, "text/css",
params))
/** \todo not necessarily caused by
* memory exhaustion */
goto no_memory;
}
/* 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);
/** \todo not necessarily caused by
* memory exhaustion */
goto no_memory;
}
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)) {
if (!content_add_user(c->data.html.stylesheet_content[STYLESHEET_STYLE],
html_convert_css_callback,
(intptr_t) c, STYLESHEET_STYLE)) {
/* no memory */
c->data.html.stylesheet_content[STYLESHEET_STYLE] = 0;
goto no_memory;
}
} else {
/* conversion failed */
c->data.html.stylesheet_content[STYLESHEET_STYLE] = 0;
}
}
/* complete the fetches */
while (c->active != 0) {
if (c->active != last_active) {
html_set_status(c, "");
content_broadcast(c, CONTENT_MSG_STATUS, msg_data);
last_active = c->active;
}
fetch_poll();
gui_multitask();
}
/* check that the base stylesheet loaded; layout fails without it */
if (!c->data.html.stylesheet_content[STYLESHEET_BASE]) {
msg_data.error = "Base stylesheet failed to load";
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
assert(c->data.html.stylesheet_content[STYLESHEET_BASE]);
css_set_origin(c->data.html.stylesheet_content[STYLESHEET_BASE],
CSS_ORIGIN_UA);
/* any of our other stylesheet pointers could be NULL at this point if
* the CSS file(s) failed to load/fetch */
if (c->data.html.stylesheet_content[STYLESHEET_ADBLOCK])
css_set_origin(c->data.html.stylesheet_content[
STYLESHEET_ADBLOCK], CSS_ORIGIN_UA);
if (c->data.html.stylesheet_content[STYLESHEET_STYLE])
css_set_origin(c->data.html.stylesheet_content[
STYLESHEET_STYLE], CSS_ORIGIN_AUTHOR);
for (i = STYLESHEET_START; i != c->data.html.stylesheet_count; i++)
if (c->data.html.stylesheet_content[i])
css_set_origin(c->data.html.stylesheet_content[i],
CSS_ORIGIN_AUTHOR);
c->data.html.working_stylesheet = css_make_working_stylesheet(
c->data.html.stylesheet_content,
c->data.html.stylesheet_count);
if (!c->data.html.working_stylesheet)
goto no_memory;
return true;
no_memory:
msg_data.error = messages_get("NoMemory");
content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
return false;
}
/**
* Callback for fetchcache() for linked stylesheets.
*/
void html_convert_css_callback(content_msg msg, struct content *css,
intptr_t p1, intptr_t p2, union content_msg_data data)
{
struct content *c = (struct content *) p1;
unsigned int i = 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--;
LOG(("%s is not CSS", css->url));
content_add_error(c, "NotCSS", 0);
html_set_status(c, messages_get("NotCSS"));
content_broadcast(c, CONTENT_MSG_STATUS, data);
content_remove_user(css,
html_convert_css_callback,
(intptr_t) c, i);
if (!css->user_list->next) {
/* we were the only user and we
* don't want this content, so
* stop it fetching and mark it
* as having an error so it gets
* removed from the cache next time
* content_clean() gets called */
fetch_abort(css->fetch);
css->fetch = 0;
css->status = CONTENT_STATUS_ERROR;
}
}
break;
case CONTENT_MSG_READY:
break;
case CONTENT_MSG_DONE:
LOG(("got stylesheet '%s'", css->url));
c->active--;
break;
case CONTENT_MSG_ERROR:
LOG(("stylesheet %s failed: %s", css->url, data.error));
/* The stylesheet we were fetching may have been
* redirected, in that case, the object pointers
* will differ, so ensure that the object that's
* in error is still in use by us before invalidating
* the pointer */
if (c->data.html.stylesheet_content[i] == css) {
c->data.html.stylesheet_content[i] = 0;
c->active--;
content_add_error(c, "?", 0);
}
break;
case CONTENT_MSG_STATUS:
html_set_status(c, 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,
(intptr_t) c, i, css->width, css->height,
true, 0, 0, false, false);
if (c->data.html.stylesheet_content[i]) {
c->active++;
fetchcache_go(c->data.html.stylesheet_content[i],
c->url,
html_convert_css_callback,
(intptr_t) c, i, css->width,
css->height, 0, 0, false,
c->url);
}
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
#ifdef WITH_SSL
case CONTENT_MSG_SSL:
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 of type CONTENT_HTML
* \param url URL of object to fetch (copied)
* \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
* \param frame name of frame, or 0 if not a frame (copied)
* \return true on success, false on memory exhaustion
*/
bool 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;
struct content_html_object *object;
struct content *c_fetch;
/* initialise fetch */
c_fetch = fetchcache(url, html_object_callback,
(intptr_t) c, i, available_width, available_height,
true, 0, 0, false, false);
if (!c_fetch)
return false;
/* add to object list */
object = talloc_realloc(c, c->data.html.object,
struct content_html_object, i + 1);
if (!object) {
content_remove_user(c_fetch, html_object_callback,
(intptr_t) c, i);
return false;
}
c->data.html.object = object;
c->data.html.object[i].url = talloc_strdup(c, url);
if (!c->data.html.object[i].url) {
content_remove_user(c_fetch, html_object_callback,
(intptr_t) c, i);
return false;
}
c->data.html.object[i].box = box;
c->data.html.object[i].permitted_types = permitted_types;
c->data.html.object[i].background = background;
c->data.html.object[i].content = c_fetch;
c->data.html.object_count++;
c->active++;
/* start fetch */
fetchcache_go(c_fetch, c->url,
html_object_callback, (intptr_t) c, i,
available_width, available_height,
0, 0, false, c->url);
return true;
}
/**
* Start a fetch for an object required by a page, replacing an existing object.
*
* \param c content of type CONTENT_HTML
* \param i index of object to replace in c->data.html.object
* \param url URL of object to fetch (copied)
* \param post_urlenc url encoded post data, or 0 if none
* \param post_multipart multipart post data, or 0 if none
* \return true on success, false on memory exhaustion
*/
bool html_replace_object(struct content *c, unsigned int i, char *url,
char *post_urlenc,
struct form_successful_control *post_multipart)
{
struct content *c_fetch;
struct content *page;
assert(c->type == CONTENT_HTML);
if (c->data.html.object[i].content) {
/* remove existing object */
if (c->data.html.object[i].content->status !=
CONTENT_STATUS_DONE)
c->active--;
content_remove_user(c->data.html.object[i].content,
html_object_callback, (intptr_t) c, i);
c->data.html.object[i].content = 0;
c->data.html.object[i].box->object = 0;
talloc_free(c->data.html.object[i].url);
c->data.html.object[i].url = 0;
}
/* initialise fetch */
c_fetch = fetchcache(url, html_object_callback,
(intptr_t) c, i,
c->data.html.object[i].box->width,
c->data.html.object[i].box->height,
false, post_urlenc, post_multipart, false, false);
if (!c_fetch)
return false;
c->data.html.object[i].url = talloc_strdup(c, url);
if (!c->data.html.object[i].url) {
content_remove_user(c_fetch, html_object_callback,
(intptr_t) c, i);
return false;
}
c->data.html.object[i].content = c_fetch;
for (page = c; page; page = page->data.html.page) {
assert(page->type == CONTENT_HTML);
page->active++;
page->status = CONTENT_STATUS_READY;
}
/* start fetch */
fetchcache_go(c_fetch, c->url,
html_object_callback, (intptr_t) c, i,
c->data.html.object[i].box->width,
c->data.html.object[i].box->height,
post_urlenc, post_multipart, false, c->url);
return true;
}
/**
* Callback for fetchcache() for objects.
*/
void html_object_callback(content_msg msg, struct content *object,
intptr_t p1, intptr_t p2, union content_msg_data data)
{
struct content *c = (struct content *) p1;
unsigned int i = 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,
i, box,
box->object_params);
break;
}
/* not acceptable */
c->data.html.object[i].content = 0;
c->active--;
content_add_error(c, "?", 0);
html_set_status(c, messages_get("BadObject"));
content_broadcast(c, CONTENT_MSG_STATUS, data);
content_remove_user(object, html_object_callback,
(intptr_t) c, i);
if (!object->user_list->next) {
/* we were the only user and we
* don't want this content, so
* stop it fetching and mark it
* as having an error so it gets
* removed from the cache next time
* content_clean() gets called */
fetch_abort(object->fetch);
object->fetch = 0;
object->status = CONTENT_STATUS_ERROR;
}
html_object_failed(box, c,
c->data.html.object[i].background);
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,
c->height);
}
break;
case CONTENT_MSG_DONE:
html_object_done(box, object,
c->data.html.object[i].background);
c->active--;
break;
case CONTENT_MSG_ERROR:
/* The object we were fetching may have been
* redirected, in that case, the object pointers
* will differ, so ensure that the object that's
* in error is still in use by us before invalidating
* the pointer */
if (c->data.html.object[i].content == object) {
c->data.html.object[i].content = 0;
c->active--;
content_add_error(c, "?", 0);
html_set_status(c, data.error);
content_broadcast(c, CONTENT_MSG_STATUS,
data);
html_object_failed(box, c,
c->data.html.object[i].background);
}
break;
case CONTENT_MSG_STATUS:
html_set_status(c, object->status_message);
/* content_broadcast(c, CONTENT_MSG_STATUS, 0); */
break;
case CONTENT_MSG_REDIRECT:
c->active--;
talloc_free(c->data.html.object[i].url);
c->data.html.object[i].url = talloc_strdup(c,
data.redirect);
if (!c->data.html.object[i].url) {
/** \todo report oom */
} else {
c->data.html.object[i].content = fetchcache(
data.redirect,
html_object_callback,
(intptr_t) c, i, 0, 0, true,
0, 0, false, false);
if (!c->data.html.object[i].content) {
/** \todo report oom */
} else {
c->active++;
fetchcache_go(c->data.html.object[i].
content,
c->url,
html_object_callback,
(intptr_t) c, i,
0, 0,
0, 0,
false, c->url);
}
}
break;
case CONTENT_MSG_REFORMAT:
break;
case CONTENT_MSG_REDRAW:
if (!box_visible(box))
break;
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
#ifdef WITH_SSL
case CONTENT_MSG_SSL:
c->data.html.object[i].content = 0;
c->active--;
content_add_error(c, "?", 0);
break;
#endif
case CONTENT_MSG_REFRESH:
if (object->type == CONTENT_HTML)
/* only for HTML objects */
schedule(data.delay * 100,
html_object_refresh, object);
break;
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, c->height);
html_set_status(c, "");
content_set_done(c);
}
if (c->status == CONTENT_STATUS_READY)
html_set_status(c, "");
}
/**
* 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;
/* invalidate parent min, max widths */
for (b = box; 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;
}
}
/**
* Handle object fetching or loading failure.
*
* \param box box containing object which failed to load
* \param content document of type CONTENT_HTML
* \param background the object was the background image for the box
*
* Any fallback content for the object is made visible.
*/
void html_object_failed(struct box *box, struct content *content,
bool background)
{
struct box *b, *ic;
if (background)
return;
if (!box->fallback)
return;
/* make fallback boxes into children or siblings, as appropriate */
if (box->type != BOX_INLINE) {
/* easy case: fallbacks become children */
assert(box->type == BOX_BLOCK ||
box->type == BOX_TABLE_CELL ||
box->type == BOX_INLINE_BLOCK);
box->children = box->fallback;
box->last = box->children;
while (box->last->next)
box->last = box->last->next;
box->fallback = 0;
box_normalise_block(box, content);
} else {
assert(box->parent->type == BOX_INLINE_CONTAINER);
if (box->fallback->type == BOX_INLINE_CONTAINER &&
!box->fallback->next) {
/* the fallback is a single inline container: splice
* it into this inline container */
for (b = box->fallback->children; b; b = b->next)
b->parent = box->parent;
box->fallback->last->next = box->next;
if (!box->next)
box->parent->last = box->fallback->last;
box->next = box->fallback->children;
box->next->prev = box;
box->fallback = 0;
} else {
if (box->next) {
/* split this inline container into two inline
* containers */
ic = box_create(0, 0, 0, 0, 0, content);
if (!ic) {
union content_msg_data msg_data;
msg_data.error =
messages_get("NoMemory");
content_broadcast(content,
CONTENT_MSG_ERROR,
msg_data);
return;
}
ic->type = BOX_INLINE_CONTAINER;
box_insert_sibling(box->parent, ic);
ic->children = box->next;
ic->last = box->parent->last;
ic->children->prev = 0;
box->next = 0;
box->parent->last = box;
for (b = ic->children; b; b = b->next)
b->parent = ic;
}
/* insert the fallback after the parent */
for (b = box->fallback; b->next; b = b->next)
b->parent = box->parent->parent;
b->parent = box->parent->parent;
/* [b is the last fallback box] */
b->next = box->parent->next;
if (b->next)
b->next->prev = b;
box->parent->next = box->fallback;
box->fallback->prev = box->parent;
box->fallback = 0;
box_normalise_block(box->parent->parent, content);
}
}
/* invalidate parent min, max widths */
for (b = box->parent; b; b = b->parent)
b->max_width = UNKNOWN_MAX_WIDTH;
box->width = UNKNOWN_WIDTH;
}
/**
* 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;
}
/**
* schedule() callback for object refresh
*/
void html_object_refresh(void *p)
{
struct content *c = (struct content *)p;
assert(c->type == CONTENT_HTML && c->refresh);
c->fresh = false;
if (!html_replace_object(c->data.html.page, c->data.html.index,
c->refresh, 0, 0)) {
/** \todo handle memory exhaustion */
}
}
/**
* 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,
(intptr_t) c, i);
else {
content_remove_user(c->data.html.object[i].content,
html_object_callback, (intptr_t) c, 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)
{
struct box *layout;
layout_document(c, width, height);
layout = c->data.html.layout;
/* width and height are at least margin box of document */
c->width = layout->x + layout->padding[LEFT] + layout->width +
layout->padding[RIGHT] + layout->border[RIGHT] +
layout->margin[RIGHT];
c->height = layout->y + layout->padding[TOP] + layout->height +
layout->padding[BOTTOM] + layout->border[BOTTOM] +
layout->margin[BOTTOM];
/* if boxes overflow right or bottom edge, expand to contain it */
if (c->width < layout->x + layout->descendant_x1)
c->width = layout->x + layout->descendant_x1;
if (c->height < layout->y + layout->descendant_y1)
c->height = layout->y + 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));
imagemap_destroy(c);
if (c->bitmap) {
bitmap_destroy(c->bitmap);
c->bitmap = NULL;
}
if (c->data.html.parser)
htmlFreeParserCtxt(c->data.html.parser);
/* Free base target */
if (c->data.html.base_target) {
talloc_free(c->data.html.base_target);
c->data.html.base_target = NULL;
}
/* Free frameset */
if (c->data.html.frameset) {
html_destroy_frameset(c->data.html.frameset);
talloc_free(c->data.html.frameset);
c->data.html.frameset = NULL;
}
/* Free iframes */
if (c->data.html.iframe) {
html_destroy_iframe(c->data.html.iframe);
c->data.html.iframe = NULL;
}
/* 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,
(intptr_t) c, i);
}
}
talloc_free(c->data.html.working_stylesheet);
/*if (c->data.html.style)
css_free_style(c->data.html.style);*/
/* 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, (intptr_t) c, i);
if (c->data.html.object[i].content->type == CONTENT_HTML)
schedule_remove(html_object_refresh,
c->data.html.object[i].content);
}
}
}
void html_destroy_frameset(struct content_html_frames *frameset) {
int i;
if (frameset->name) {
talloc_free(frameset->name);
frameset->name = NULL;
}
if (frameset->url) {
talloc_free(frameset->url);
frameset->url = NULL;
}
if (frameset->children) {
for (i = 0; i < (frameset->rows * frameset->cols); i++) {
if (frameset->children[i].name) {
talloc_free(frameset->children[i].name);
frameset->children[i].name = NULL;
}
if (frameset->children[i].url) {
talloc_free(frameset->children[i].url);
frameset->children[i].url = NULL;
}
if (frameset->children[i].children)
html_destroy_frameset(&frameset->children[i]);
}
talloc_free(frameset->children);
frameset->children = NULL;
}
}
void html_destroy_iframe(struct content_html_iframe *iframe) {
struct content_html_iframe *next;
next = iframe;
while ((iframe = next) != NULL) {
next = iframe->next;
if (iframe->name)
talloc_free(iframe->name);
if (iframe->url)
talloc_free(iframe->url);
talloc_free(iframe);
}
}
/**
* Set the content status.
*/
void html_set_status(struct content *c, const char *extra)
{
unsigned int stylesheets = 0, objects = 0;
if (c->data.html.object_count == 0)
stylesheets = c->data.html.stylesheet_count - c->active;
else {
stylesheets = c->data.html.stylesheet_count;
objects = c->data.html.object_count - c->active;
}
content_set_status(c, "%u/%u %s %u/%u %s %s",
stylesheets, c->data.html.stylesheet_count,
messages_get((c->data.html.stylesheet_count == 1) ?
"styl" : "styls"),
objects, c->data.html.object_count,
messages_get((c->data.html.object_count == 1) ?
"obj" : "objs"),
extra);
}
/**
* Handle a window containing a CONTENT_HTML being opened.
*/
void html_open(struct content *c, struct browser_window *bw,
struct content *page, unsigned int index, struct box *box,
struct object_params *params)
{
unsigned int i;
c->data.html.bw = bw;
c->data.html.page = page;
c->data.html.index = index;
c->data.html.box = box;
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, i,
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;
schedule_remove(html_object_refresh, c);
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);
}
}
/**
* Print a frameset tree to stderr.
*/
void html_dump_frameset(struct content_html_frames *frame,
unsigned int depth)
{
unsigned int i;
int row, col, index;
const char *unit[] = {"px", "%", "*"};
const char *scrolling[] = {"auto", "yes", "no"};
assert(frame);
fprintf(stderr, "%p ", frame);
fprintf(stderr, "(%i %i) ", frame->rows, frame->cols);
fprintf(stderr, "w%g%s ", frame->width.value, unit[frame->width.unit]);
fprintf(stderr, "h%g%s ", frame->height.value,unit[frame->height.unit]);
fprintf(stderr, "(margin w%i h%i) ",
frame->margin_width, frame->margin_height);
if (frame->name)
fprintf(stderr, "'%s' ", frame->name);
if (frame->url)
fprintf(stderr, "<%s> ", frame->url);
if (frame->no_resize)
fprintf(stderr, "noresize ");
fprintf(stderr, "(scrolling %s) ", scrolling[frame->scrolling]);
if (frame->border)
fprintf(stderr, "border %x ",
(unsigned int) frame->border_colour);
fprintf(stderr, "\n");
if (frame->children) {
for (row = 0; row != frame->rows; row++) {
for (col = 0; col != frame->cols; col++) {
for (i = 0; i != depth; i++)
fprintf(stderr, " ");
fprintf(stderr, "(%i %i): ", row, col);
index = (row * frame->cols) + col;
html_dump_frameset(&frame->children[index],
depth + 1);
}
}
}
}
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