move html and text content handlers where they belong

1 files changed, 0 insertions, 2467 deletions

diff --git a/render/html.c b/render/html.c
deleted file mode 100644
index b7d7aa313..000000000
--- a/render/html.c
+++ /dev/null
@@ -1,2467 +0,0 @@
-/*
- * Copyright 2007 James Bursa <bursa@users.sourceforge.net>
- * Copyright 2010 Michael Drake <tlsa@netsurf-browser.org>
- *
- * 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
- * Content for text/html (implementation).
- */
-
-#include <assert.h>
-#include <stdint.h>
-#include <string.h>
-#include <strings.h>
-#include <stdlib.h>
-#include <nsutils/time.h>
-
-#include "utils/utils.h"
-#include "utils/config.h"
-#include "utils/corestrings.h"
-#include "utils/http.h"
-#include "utils/libdom.h"
-#include "utils/log.h"
-#include "utils/messages.h"
-#include "utils/talloc.h"
-#include "utils/utf8.h"
-#include "utils/nsoption.h"
-#include "utils/string.h"
-#include "utils/ascii.h"
-#include "netsurf/content.h"
-#include "netsurf/browser_window.h"
-#include "netsurf/utf8.h"
-#include "netsurf/layout.h"
-#include "netsurf/misc.h"
-#include "content/hlcache.h"
-#include "desktop/selection.h"
-#include "desktop/scrollbar.h"
-#include "desktop/textarea.h"
-#include "netsurf/bitmap.h"
-#include "javascript/js.h"
-#include "desktop/gui_internal.h"
-
-#include "render/box.h"
-#include "render/form_internal.h"
-#include "render/html_internal.h"
-#include "render/imagemap.h"
-#include "render/layout.h"
-#include "render/search.h"
-
-#define CHUNK 4096
-
-/* Change these to 1 to cause a dump to stderr of the frameset or box
- * when the trees have been built.
- */
-#define ALWAYS_DUMP_FRAMESET 0
-#define ALWAYS_DUMP_BOX 0
-
-static const char *html_types[] = {
-	"application/xhtml+xml",
-	"text/html"
-};
-
-/* Exported interface, see html_internal.h */
-bool fire_dom_event(dom_string *type, dom_node *target,
-		    bool bubbles, bool cancelable)
-{
-	dom_exception exc;
-	dom_event *evt;
-	bool result;
-
-	exc = dom_event_create(&evt);
-	if (exc != DOM_NO_ERR) return false;
-	exc = dom_event_init(evt, type, bubbles, cancelable);
-	if (exc != DOM_NO_ERR) {
-		dom_event_unref(evt);
-		return false;
-	}
-	NSLOG(netsurf, INFO, "Dispatching '%*s' against %p",
-	      dom_string_length(type), dom_string_data(type), target);
-	exc = dom_event_target_dispatch_event(target, evt, &result);
-	if (exc != DOM_NO_ERR) {
-		result = false;
-	}
-	dom_event_unref(evt);
-	return result;
-}
-
-/**
- * Perform post-box-creation conversion of a document
- *
- * \param c        HTML content to complete conversion of
- * \param success  Whether box tree construction was successful
- */
-static void html_box_convert_done(html_content *c, bool success)
-{
-	nserror err;
-	dom_exception exc; /* returned by libdom functions */
-	dom_node *html;
-
-	NSLOG(netsurf, INFO, "Done XML to box (%p)", c);
-
-	/* Clean up and report error if unsuccessful or aborted */
-	if ((success == false) || (c->aborted)) {
-		html_object_free_objects(c);
-
-		if (success == false) {
-			content_broadcast_errorcode(&c->base, NSERROR_BOX_CONVERT);
-		} else {
-			content_broadcast_errorcode(&c->base, NSERROR_STOPPED);
-		}
-
-		content_set_error(&c->base);
-		return;
-	}
-
-
-#if ALWAYS_DUMP_BOX
-	box_dump(stderr, c->layout->children, 0, true);
-#endif
-#if ALWAYS_DUMP_FRAMESET
-	if (c->frameset)
-		html_dump_frameset(c->frameset, 0);
-#endif
-
-	exc = dom_document_get_document_element(c->document, (void *) &html);
-	if ((exc != DOM_NO_ERR) || (html == NULL)) {
-		/** @todo should this call html_object_free_objects(c);
-		 * like the other error paths 
-		 */
-		NSLOG(netsurf, INFO, "error retrieving html element from dom");
-		content_broadcast_errorcode(&c->base, NSERROR_DOM);
-		content_set_error(&c->base);
-		return;
-	}
-
-	/* extract image maps - can't do this sensibly in dom_to_box */
-	err = imagemap_extract(c);
-	if (err != NSERROR_OK) {
-		NSLOG(netsurf, INFO, "imagemap extraction failed");
-		html_object_free_objects(c);
-		content_broadcast_errorcode(&c->base, err);
-		content_set_error(&c->base);
-		dom_node_unref(html);
-		return;
-	}
-	/*imagemap_dump(c);*/
-
-	/* Destroy the parser binding */
-	dom_hubbub_parser_destroy(c->parser);
-	c->parser = NULL;
-
-	content_set_ready(&c->base);
-
-	if (c->base.active == 0) {
-		content_set_done(&c->base);
-	}
-
-	dom_node_unref(html);
-}
-
-
-/** process link node */
-static bool html_process_link(html_content *c, dom_node *node)
-{
-	struct content_rfc5988_link link; /* the link added to the content */
-	dom_exception exc; /* returned by libdom functions */
-	dom_string *atr_string;
-	nserror error;
-
-	memset(&link, 0, sizeof(struct content_rfc5988_link));
-
-	/* check that the relation exists - w3c spec says must be present */
-	exc = dom_element_get_attribute(node, corestring_dom_rel, &atr_string);
-	if ((exc != DOM_NO_ERR) || (atr_string == NULL)) {
-		return false;
-	}
-	/* get a lwc string containing the link relation */
-	exc = dom_string_intern(atr_string, &link.rel);
-	dom_string_unref(atr_string);
-	if (exc != DOM_NO_ERR) {
-		return false;
-	}
-
-	/* check that the href exists - w3c spec says must be present */
-	exc = dom_element_get_attribute(node, corestring_dom_href, &atr_string);
-	if ((exc != DOM_NO_ERR) || (atr_string == NULL)) {
-		lwc_string_unref(link.rel);
-		return false;
-	}
-
-	/* get nsurl */
-	error = nsurl_join(c->base_url, dom_string_data(atr_string),
-			&link.href);
-	dom_string_unref(atr_string);
-	if (error != NSERROR_OK) {
-		lwc_string_unref(link.rel);
-		return false;
-	}
-
-	/* look for optional properties -- we don't care if internment fails */
-
-	exc = dom_element_get_attribute(node,
-			corestring_dom_hreflang, &atr_string);
-	if ((exc == DOM_NO_ERR) && (atr_string != NULL)) {
-		/* get a lwc string containing the href lang */
-		exc = dom_string_intern(atr_string, &link.hreflang);
-		dom_string_unref(atr_string);
-	}
-
-	exc = dom_element_get_attribute(node,
-			corestring_dom_type, &atr_string);
-	if ((exc == DOM_NO_ERR) && (atr_string != NULL)) {
-		/* get a lwc string containing the type */
-		exc = dom_string_intern(atr_string, &link.type);
-		dom_string_unref(atr_string);
-	}
-
-	exc = dom_element_get_attribute(node,
-			corestring_dom_media, &atr_string);
-	if ((exc == DOM_NO_ERR) && (atr_string != NULL)) {
-		/* get a lwc string containing the media */
-		exc = dom_string_intern(atr_string, &link.media);
-		dom_string_unref(atr_string);
-	}
-
-	exc = dom_element_get_attribute(node,
-			corestring_dom_sizes, &atr_string);
-	if ((exc == DOM_NO_ERR) && (atr_string != NULL)) {
-		/* get a lwc string containing the sizes */
-		exc = dom_string_intern(atr_string, &link.sizes);
-		dom_string_unref(atr_string);
-	}
-
-	/* add to content */
-	content__add_rfc5988_link(&c->base, &link);
-
-	if (link.sizes != NULL)
-		lwc_string_unref(link.sizes);
-	if (link.media != NULL)
-		lwc_string_unref(link.media);
-	if (link.type != NULL)
-		lwc_string_unref(link.type);
-	if (link.hreflang != NULL)
-		lwc_string_unref(link.hreflang);
-
-	nsurl_unref(link.href);
-	lwc_string_unref(link.rel);
-
-	return true;
-}
-
-/** process title node */
-static bool html_process_title(html_content *c, dom_node *node)
-{
-	dom_exception exc; /* returned by libdom functions */
-	dom_string *title;
-	char *title_str;
-	bool success;
-
-	exc = dom_node_get_text_content(node, &title);
-	if ((exc != DOM_NO_ERR) || (title == NULL)) {
-		return false;
-	}
-
-	title_str = squash_whitespace(dom_string_data(title));
-	dom_string_unref(title);
-
-	if (title_str == NULL) {
-		return false;
-	}
-
-	success = content__set_title(&c->base, title_str);
-
-	free(title_str);
-
-	return success;
-}
-
-static bool html_process_base(html_content *c, dom_node *node)
-{
-	dom_exception exc; /* returned by libdom functions */
-	dom_string *atr_string;
-
-	/* get href attribute if present */
-	exc = dom_element_get_attribute(node,
-			corestring_dom_href, &atr_string);
-	if ((exc == DOM_NO_ERR) && (atr_string != NULL)) {
-		nsurl *url;
-		nserror error;
-
-		/* get url from string */
-		error = nsurl_create(dom_string_data(atr_string), &url);
-		dom_string_unref(atr_string);
-		if (error == NSERROR_OK) {
-			if (c->base_url != NULL)
-				nsurl_unref(c->base_url);
-			c->base_url = url;
-		}
-	}
-
-
-	/* get target attribute if present and not already set */
-	if (c->base_target != NULL) {
-		return true;
-	}
-
-	exc = dom_element_get_attribute(node,
-			corestring_dom_target, &atr_string);
-	if ((exc == DOM_NO_ERR) && (atr_string != NULL)) {
-		/* Validation rules from the HTML5 spec for the base element:
-		 *  The target must be one of _blank, _self, _parent, or
-		 *  _top or any identifier which does not begin with an
-		 *  underscore
-		 */
-		if (*dom_string_data(atr_string) != '_' ||
-				dom_string_caseless_lwc_isequal(atr_string,
-						corestring_lwc__blank) ||
-				dom_string_caseless_lwc_isequal(atr_string,
-						corestring_lwc__self) ||
-				dom_string_caseless_lwc_isequal(atr_string,
-						corestring_lwc__parent) ||
-				dom_string_caseless_lwc_isequal(atr_string,
-						corestring_lwc__top)) {
-			c->base_target = strdup(dom_string_data(atr_string));
-		}
-		dom_string_unref(atr_string);
-	}
-
-	return true;
-}
-
-static nserror html_meta_refresh_process_element(html_content *c, dom_node *n)
-{
-	union content_msg_data msg_data;
-	const char *url, *end, *refresh = NULL;
-	char *new_url;
-	char quote = '\0';
-	dom_string *equiv, *content;
-	dom_exception exc;
-	nsurl *nsurl;
-	nserror error = NSERROR_OK;
-
-	exc = dom_element_get_attribute(n, corestring_dom_http_equiv, &equiv);
-	if (exc != DOM_NO_ERR) {
-		return NSERROR_DOM;
-	}
-
-	if (equiv == NULL) {
-		return NSERROR_OK;
-	}
-
-	if (!dom_string_caseless_lwc_isequal(equiv, corestring_lwc_refresh)) {
-		dom_string_unref(equiv);
-		return NSERROR_OK;
-	}
-
-	dom_string_unref(equiv);
-
-	exc = dom_element_get_attribute(n, corestring_dom_content, &content);
-	if (exc != DOM_NO_ERR) {
-		return NSERROR_DOM;
-	}
-
-	if (content == NULL) {
-		return NSERROR_OK;
-	}
-
-	end = dom_string_data(content) + dom_string_byte_length(content);
-
-	/* content  := *LWS intpart fracpart? *LWS [';' *LWS *1url *LWS]
-	 * intpart  := 1*DIGIT
-	 * fracpart := 1*('.' | DIGIT)
-	 * url      := "url" *LWS '=' *LWS (url-nq | url-sq | url-dq)
-	 * url-nq   := *urlchar
-	 * url-sq   := "'" *(urlchar | '"') "'"
-	 * url-dq   := '"' *(urlchar | "'") '"'
-	 * urlchar  := [#x9#x21#x23-#x26#x28-#x7E] | nonascii
-	 * nonascii := [#x80-#xD7FF#xE000-#xFFFD#x10000-#x10FFFF]
-	 */
-
-	url = dom_string_data(content);
-
-	/* *LWS */
-	while (url < end && ascii_is_space(*url)) {
-		url++;
-	}
-
-	/* intpart */
-	if (url == end || (*url < '0' || '9' < *url)) {
-		/* Empty content, or invalid timeval */
-		dom_string_unref(content);
-		return NSERROR_OK;
-	}
-
-	msg_data.delay = (int) strtol(url, &new_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;
-	}
-
-	url = new_url;
-
-	/* fracpart? (ignored, as delay is integer only) */
-	while (url < end && (('0' <= *url && *url <= '9') ||
-			*url == '.')) {
-		url++;
-	}
-
-	/* *LWS */
-	while (url < end && ascii_is_space(*url)) {
-		url++;
-	}
-
-	/* ';' */
-	if (url < end && *url == ';')
-		url++;
-
-	/* *LWS */
-	while (url < end && ascii_is_space(*url)) {
-		url++;
-	}
-
-	if (url == end) {
-		/* Just delay specified, so refresh current page */
-		dom_string_unref(content);
-
-		c->base.refresh = nsurl_ref(
-				content_get_url(&c->base));
-
-		content_broadcast(&c->base, CONTENT_MSG_REFRESH, &msg_data);
-
-		return NSERROR_OK;
-	}
-
-	/* "url" */
-	if (url <= end - 3) {
-		if (strncasecmp(url, "url", 3) == 0) {
-			url += 3;
-		} else {
-			/* Unexpected input, ignore this header */
-			dom_string_unref(content);
-			return NSERROR_OK;
-		}
-	} else {
-		/* Insufficient input, ignore this header */
-		dom_string_unref(content);
-		return NSERROR_OK;
-	}
-
-	/* *LWS */
-	while (url < end && ascii_is_space(*url)) {
-		url++;
-	}
-
-	/* '=' */
-	if (url < end) {
-		if (*url == '=') {
-			url++;
-		} else {
-			/* Unexpected input, ignore this header */
-			dom_string_unref(content);
-			return NSERROR_OK;
-		}
-	} else {
-		/* Insufficient input, ignore this header */
-		dom_string_unref(content);
-		return NSERROR_OK;
-	}
-
-	/* *LWS */
-	while (url < end && ascii_is_space(*url)) {
-		url++;
-	}
-
-	/* '"' or "'" */
-	if (url < end && (*url == '"' || *url == '\'')) {
-		quote = *url;
-		url++;
-	}
-
-	/* Start of URL */
-	refresh = url;
-
-	if (quote != 0) {
-		/* url-sq | url-dq */
-		while (url < end && *url != quote)
-			url++;
-	} else {
-		/* url-nq */
-		while (url < end && !ascii_is_space(*url))
-			url++;
-	}
-
-	/* '"' or "'" or *LWS (we don't care) */
-	if (url > refresh) {
-		/* There's a URL */
-		new_url = strndup(refresh, url - refresh);
-		if (new_url == NULL) {
-			dom_string_unref(content);
-			return NSERROR_NOMEM;
-		}
-
-		error = nsurl_join(c->base_url, new_url, &nsurl);
-		if (error == NSERROR_OK) {
-			/* broadcast valid refresh url */
-
-			c->base.refresh = nsurl;
-
-			content_broadcast(&c->base, CONTENT_MSG_REFRESH,
-					&msg_data);
-			c->refresh = true;
-		}
-
-		free(new_url);
-
-	}
-
-	dom_string_unref(content);
-
-	return error;
-}
-
-static bool html_process_img(html_content *c, dom_node *node)
-{
-	dom_string *src;
-	nsurl *url;
-	nserror err;
-	dom_exception exc;
-	bool success;
-
-	/* Do nothing if foreground images are disabled */
-	if (nsoption_bool(foreground_images) == false) {
-		return true;
-	}
-
-	exc = dom_element_get_attribute(node, corestring_dom_src, &src);
-	if (exc != DOM_NO_ERR || src == NULL) {
-		return true;
-	}
-
-	err = nsurl_join(c->base_url, dom_string_data(src), &url);
-	if (err != NSERROR_OK) {
-		dom_string_unref(src);
-		return false;
-	}
-	dom_string_unref(src);
-
-	/* Speculatively fetch the image */
-	success = html_fetch_object(c, url, NULL, CONTENT_IMAGE, 0, 0, false);
-	nsurl_unref(url);
-
-	return success;
-}
-
-/* exported function documented in render/html_internal.h */
-void html_finish_conversion(html_content *htmlc)
-{
-	union content_msg_data msg_data;
-	dom_exception exc; /* returned by libdom functions */
-	dom_node *html;
-	nserror error;
-
-	/* Bail out if we've been aborted */
-	if (htmlc->aborted) {
-		content_broadcast_errorcode(&htmlc->base, NSERROR_STOPPED);
-		content_set_error(&htmlc->base);
-		return;
-	}
-
-	/* create new css selection context */
-	error = html_css_new_selection_context(htmlc, &htmlc->select_ctx);
-	if (error != NSERROR_OK) {
-		content_broadcast_errorcode(&htmlc->base, error);
-		content_set_error(&htmlc->base);
-		return;
-	}
-
-
-	/* fire a simple event named load at the Document's Window
-	 * object, but with its target set to the Document object (and
-	 * the currentTarget set to the Window object)
-	 */
-	if (htmlc->jscontext != NULL) {
-		js_fire_event(htmlc->jscontext, "load", htmlc->document, NULL);
-	}
-
-	/* convert dom tree to box tree */
-	NSLOG(netsurf, INFO, "DOM to box (%p)", htmlc);
-	content_set_status(&htmlc->base, messages_get("Processing"));
-	msg_data.explicit_status_text = NULL;
-	content_broadcast(&htmlc->base, CONTENT_MSG_STATUS, &msg_data);
-
-	exc = dom_document_get_document_element(htmlc->document, (void *) &html);
-	if ((exc != DOM_NO_ERR) || (html == NULL)) {
-		NSLOG(netsurf, INFO, "error retrieving html element from dom");
-		content_broadcast_errorcode(&htmlc->base, NSERROR_DOM);
-		content_set_error(&htmlc->base);
-		return;
-	}
-
-	error = dom_to_box(html, htmlc, html_box_convert_done);
-	if (error != NSERROR_OK) {
-		NSLOG(netsurf, INFO, "box conversion failed");
-		dom_node_unref(html);
-		html_object_free_objects(htmlc);
-		content_broadcast_errorcode(&htmlc->base, error);
-		content_set_error(&htmlc->base);
-		return;
-	}
-
-	dom_node_unref(html);
-}
-
-/* callback for DOMNodeInserted end type */
-static void
-dom_default_action_DOMNodeInserted_cb(struct dom_event *evt, void *pw)
-{
-	dom_event_target *node;
-	dom_node_type type;
-	dom_exception exc;
-	html_content *htmlc = pw;
-
-	exc = dom_event_get_target(evt, &node);
-	if ((exc == DOM_NO_ERR) && (node != NULL)) {
-		exc = dom_node_get_node_type(node, &type);
-		if ((exc == DOM_NO_ERR) && (type == DOM_ELEMENT_NODE)) {
-			/* an element node has been inserted */
-			dom_html_element_type tag_type;
-
-			exc = dom_html_element_get_tag_type(node, &tag_type);
-			if (exc != DOM_NO_ERR) {
-				tag_type = DOM_HTML_ELEMENT_TYPE__UNKNOWN;
-			}
-
-			switch (tag_type) {
-			case DOM_HTML_ELEMENT_TYPE_LINK:
-				/* Handle stylesheet loading */
-				html_css_process_link(htmlc, (dom_node *)node);
-				/* Generic link handling */
-				html_process_link(htmlc, (dom_node *)node);
-				break;
-			case DOM_HTML_ELEMENT_TYPE_META:
-				if (htmlc->refresh)
-					break;
-				html_meta_refresh_process_element(htmlc,
-						(dom_node *)node);
-				break;
-			case DOM_HTML_ELEMENT_TYPE_TITLE:
-				if (htmlc->title != NULL)
-					break;
-				htmlc->title = dom_node_ref(node);
-				break;
-			case DOM_HTML_ELEMENT_TYPE_BASE:
-				html_process_base(htmlc, (dom_node *)node);
-				break;
-			case DOM_HTML_ELEMENT_TYPE_IMG:
-				html_process_img(htmlc, (dom_node *) node);
-				break;
-			case DOM_HTML_ELEMENT_TYPE_STYLE:
-				html_css_process_style(htmlc, (dom_node *) node);
-				break;
-			default:
-				break;
-			}
-			if (htmlc->enable_scripting) {
-				/* ensure javascript context is available */
-				if (htmlc->jscontext == NULL) {
-					union content_msg_data msg_data;
-
-					msg_data.jscontext = &htmlc->jscontext;
-					content_broadcast(&htmlc->base,
-							CONTENT_MSG_GETCTX,
-							&msg_data);
-					NSLOG(netsurf, INFO,
-					      "javascript context: %p (htmlc: %p)",
-					      htmlc->jscontext,
-					      htmlc);
-				}
-				if (htmlc->jscontext != NULL) {
-					js_handle_new_element(htmlc->jscontext,
-							(dom_element *) node);
-				}
-			}
-		}
-		dom_node_unref(node);
-	}
-}
-
-/* callback for DOMNodeInserted end type */
-static void
-dom_default_action_DOMSubtreeModified_cb(struct dom_event *evt, void *pw)
-{
-	dom_event_target *node;
-	dom_node_type type;
-	dom_exception exc;
-	html_content *htmlc = pw;
-
-	exc = dom_event_get_target(evt, &node);
-	if ((exc == DOM_NO_ERR) && (node != NULL)) {
-		if (htmlc->title == (dom_node *)node) {
-			/* Node is our title node */
-			html_process_title(htmlc, (dom_node *)node);
-			dom_node_unref(node);
-			return;
-		}
-
-		exc = dom_node_get_node_type(node, &type);
-		if ((exc == DOM_NO_ERR) && (type == DOM_ELEMENT_NODE)) {
-			/* an element node has been modified */
-			dom_html_element_type tag_type;
-
-			exc = dom_html_element_get_tag_type(node, &tag_type);
-			if (exc != DOM_NO_ERR) {
-				tag_type = DOM_HTML_ELEMENT_TYPE__UNKNOWN;
-			}
-
-			switch (tag_type) {
-			case DOM_HTML_ELEMENT_TYPE_STYLE:
-				html_css_update_style(htmlc, (dom_node *)node);
-				break;
-			default:
-				break;
-			}
-		}
-		dom_node_unref(node);
-	}
-}
-
-static void
-dom_default_action_finished_cb(struct dom_event *evt, void *pw)
-{
-	html_content *htmlc = pw;
-
-	if (htmlc->jscontext != NULL)
-		js_event_cleanup(htmlc->jscontext, evt);
-}
-
-/* callback function selector
- *
- * selects a callback function for libdom to call based on the type and phase.
- * dom_default_action_phase from events/document_event.h
- *
- * The principle events are:
- *   DOMSubtreeModified
- *   DOMAttrModified
- *   DOMNodeInserted
- *   DOMNodeInsertedIntoDocument
- *
- * @return callback function pointer or NULL for none
- */
-static dom_default_action_callback
-dom_event_fetcher(dom_string *type,
-		  dom_default_action_phase phase,
-		  void **pw)
-{
-	NSLOG(netsurf, DEEPDEBUG, "type:%s", dom_string_data(type));
-
-	if (phase == DOM_DEFAULT_ACTION_END) {
-		if (dom_string_isequal(type, corestring_dom_DOMNodeInserted)) {
-			return dom_default_action_DOMNodeInserted_cb;
-		} else if (dom_string_isequal(type, corestring_dom_DOMSubtreeModified)) {
-			return dom_default_action_DOMSubtreeModified_cb;
-		}
-	} else if (phase == DOM_DEFAULT_ACTION_FINISHED) {
-		return dom_default_action_finished_cb;
-	}
-	return NULL;
-}
-
-static void
-html_document_user_data_handler(dom_node_operation operation,
-				dom_string *key, void *data,
-				struct dom_node *src,
-				struct dom_node *dst)
-{
-	if (dom_string_isequal(corestring_dom___ns_key_html_content_data,
-			       key) == false || data == NULL) {
-		return;
-	}
-
-	switch (operation) {
-	case DOM_NODE_CLONED:
-		NSLOG(netsurf, INFO, "Cloned");
-		break;
-	case DOM_NODE_RENAMED:
-		NSLOG(netsurf, INFO, "Renamed");
-		break;
-	case DOM_NODE_IMPORTED:
-		NSLOG(netsurf, INFO, "imported");
-		break;
-	case DOM_NODE_ADOPTED:
-		NSLOG(netsurf, INFO, "Adopted");
-		break;
-	case DOM_NODE_DELETED:
-		/* This is the only path I expect */
-		break;
-	default:
-		NSLOG(netsurf, INFO, "User data operation not handled.");
-		assert(0);
-	}
-}
-
-
-static nserror
-html_create_html_data(html_content *c, const http_parameter *params)
-{
-	lwc_string *charset;
-	nserror nerror;
-	dom_hubbub_parser_params parse_params;
-	dom_hubbub_error error;
-	dom_exception err;
-	void *old_node_data;
-
-	c->parser = NULL;
-	c->parse_completed = false;
-	c->document = NULL;
-	c->quirks = DOM_DOCUMENT_QUIRKS_MODE_NONE;
-	c->encoding = NULL;
-	c->base_url = nsurl_ref(content_get_url(&c->base));
-	c->base_target = NULL;
-	c->aborted = false;
-	c->refresh = false;
-	c->reflowing = false;
-	c->title = NULL;
-	c->bctx = NULL;
-	c->layout = NULL;
-	c->background_colour = NS_TRANSPARENT;
-	c->stylesheet_count = 0;
-	c->stylesheets = NULL;
-	c->select_ctx = NULL;
-	c->universal = NULL;
-	c->num_objects = 0;
-	c->object_list = NULL;
-	c->forms = NULL;
-	c->imagemaps = NULL;
-	c->bw = NULL;
-	c->frameset = NULL;
-	c->iframe = NULL;
-	c->page = NULL;
-	c->font_func = guit->layout;
-	c->drag_type = HTML_DRAG_NONE;
-	c->drag_owner.no_owner = true;
-	c->selection_type = HTML_SELECTION_NONE;
-	c->selection_owner.none = true;
-	c->focus_type = HTML_FOCUS_SELF;
-	c->focus_owner.self = true;
-	c->search = NULL;
-	c->search_string = NULL;
-	c->scripts_count = 0;
-	c->scripts = NULL;
-	c->jscontext = NULL;
-
-	c->enable_scripting = nsoption_bool(enable_javascript);
-	c->base.active = 1; /* The html content itself is active */
-
-	if (lwc_intern_string("*", SLEN("*"), &c->universal) != lwc_error_ok) {
-		return NSERROR_NOMEM;
-	}
-
-	selection_prepare(&c->sel, (struct content *)c, true);
-
-	nerror = http_parameter_list_find_item(params, corestring_lwc_charset, &charset);
-	if (nerror == NSERROR_OK) {
-		c->encoding = strdup(lwc_string_data(charset));
-
-		lwc_string_unref(charset);
-
-		if (c->encoding == NULL) {
-			lwc_string_unref(c->universal);
-			c->universal = NULL;
-			return NSERROR_NOMEM;
-
-		}
-		c->encoding_source = DOM_HUBBUB_ENCODING_SOURCE_HEADER;
-	}
-
-	/* Create the parser binding */
-	parse_params.enc = c->encoding;
-	parse_params.fix_enc = true;
-	parse_params.enable_script = c->enable_scripting;
-	parse_params.msg = NULL;
-	parse_params.script = html_process_script;
-	parse_params.ctx = c;
-	parse_params.daf = dom_event_fetcher;
-
-	error = dom_hubbub_parser_create(&parse_params,
-					 &c->parser,
-					 &c->document);
-	if ((error != DOM_HUBBUB_OK) && (c->encoding != NULL)) {
-		/* Ok, we don't support the declared encoding. Bailing out
-		 * isn't exactly user-friendly, so fall back to autodetect */
-		free(c->encoding);
-		c->encoding = NULL;
-
-		parse_params.enc = c->encoding;
-
-		error = dom_hubbub_parser_create(&parse_params,
-						 &c->parser,
-						 &c->document);
-	}
-	if (error != DOM_HUBBUB_OK) {
-		nsurl_unref(c->base_url);
-		c->base_url = NULL;
-
-		lwc_string_unref(c->universal);
-		c->universal = NULL;
-
-		return libdom_hubbub_error_to_nserror(error);
-	}
-
-	err = dom_node_set_user_data(c->document,
-				     corestring_dom___ns_key_html_content_data,
-				     c, html_document_user_data_handler,
-				     (void *) &old_node_data);
-	if (err != DOM_NO_ERR) {
-		dom_hubbub_parser_destroy(c->parser);
-		nsurl_unref(c->base_url);
-		c->base_url = NULL;
-
-		lwc_string_unref(c->universal);
-		c->universal = NULL;
-
-		NSLOG(netsurf, INFO, "Unable to set user data.");
-		return NSERROR_DOM;
-	}
-
-	assert(old_node_data == NULL);
-
-	return NSERROR_OK;
-
-}
-
-/**
- * Create a CONTENT_HTML.
- *
- * The content_html_data structure is initialized and the HTML parser is
- * created.
- */
-
-static nserror
-html_create(const content_handler *handler,
-	    lwc_string *imime_type,
-	    const http_parameter *params,
-	    llcache_handle *llcache,
-	    const char *fallback_charset,
-	    bool quirks,
-	    struct content **c)
-{
-	html_content *html;
-	nserror error;
-
-	html = calloc(1, sizeof(html_content));
-	if (html == NULL)
-		return NSERROR_NOMEM;
-
-	error = content__init(&html->base, handler, imime_type, params,
-			llcache, fallback_charset, quirks);
-	if (error != NSERROR_OK) {
-		free(html);
-		return error;
-	}
-
-	error = html_create_html_data(html, params);
-	if (error != NSERROR_OK) {
-		content_broadcast_errorcode(&html->base, error);
-		free(html);
-		return error;
-	}
-
-	error = html_css_new_stylesheets(html);
-	if (error != NSERROR_OK) {
-		content_broadcast_errorcode(&html->base, error);
-		free(html);
-		return error;
-	}
-
-	*c = (struct content *) html;
-
-	return NSERROR_OK;
-}
-
-
-
-static nserror
-html_process_encoding_change(struct content *c, 
-			     const char *data, 
-			     unsigned int size)
-{
-	html_content *html = (html_content *) c;
-	dom_hubbub_parser_params parse_params;
-	dom_hubbub_error error;
-	const char *encoding;
-	const char *source_data;
-	unsigned long source_size;
-
-	/* Retrieve new encoding */
-	encoding = dom_hubbub_parser_get_encoding(html->parser, 
-						  &html->encoding_source);
-	if (encoding == NULL) {
-		return NSERROR_NOMEM;
-	}
-
-	if (html->encoding != NULL) {
-		free(html->encoding);
-		html->encoding = NULL;
-	}
-
-	html->encoding = strdup(encoding);
-	if (html->encoding == NULL) {
-		return NSERROR_NOMEM;
-	}
-
-	/* Destroy binding */
-	dom_hubbub_parser_destroy(html->parser);
-	html->parser = NULL;
-
-	if (html->document != NULL) {
-		dom_node_unref(html->document);
-	}
-
-	parse_params.enc = html->encoding;
-	parse_params.fix_enc = true;
-	parse_params.enable_script = html->enable_scripting;
-	parse_params.msg = NULL;
-	parse_params.script = html_process_script;
-	parse_params.ctx = html;
-	parse_params.daf = dom_event_fetcher;
-
-	/* Create new binding, using the new encoding */
-	error = dom_hubbub_parser_create(&parse_params,
-					 &html->parser,
-					 &html->document);
-	if (error != DOM_HUBBUB_OK) {
-		/* Ok, we don't support the declared encoding. Bailing out
-		 * isn't exactly user-friendly, so fall back to Windows-1252 */
-		free(html->encoding);
-		html->encoding = strdup("Windows-1252");
-		if (html->encoding == NULL) {
-			return NSERROR_NOMEM;
-		}
-		parse_params.enc = html->encoding;
-
-		error = dom_hubbub_parser_create(&parse_params,
-						 &html->parser,
-						 &html->document);
-
-		if (error != DOM_HUBBUB_OK) {
-			return libdom_hubbub_error_to_nserror(error);
-		}
-
-	}
-
-	source_data = content__get_source_data(c, &source_size);
-
-	/* Reprocess all the data.  This is safe because
-	 * the encoding is now specified at parser start which means
-	 * it cannot be changed again. 
-	 */
-	error = dom_hubbub_parser_parse_chunk(html->parser, 
-					      (const uint8_t *)source_data, 
-					      source_size);
-
-	return libdom_hubbub_error_to_nserror(error);
-}
-
-
-/**
- * Process data for CONTENT_HTML.
- */
-
-static bool
-html_process_data(struct content *c, const char *data, unsigned int size)
-{
-	html_content *html = (html_content *) c;
-	dom_hubbub_error dom_ret;
-	nserror err = NSERROR_OK; /* assume its all going to be ok */
-
-	dom_ret = dom_hubbub_parser_parse_chunk(html->parser, 
-					      (const uint8_t *) data, 
-					      size);
-
-	err = libdom_hubbub_error_to_nserror(dom_ret);
-
-	/* deal with encoding change */
-	if (err == NSERROR_ENCODING_CHANGE) {
-		 err = html_process_encoding_change(c, data, size);
-	}
-
-	/* broadcast the error if necessary */
-	if (err != NSERROR_OK) {
-		content_broadcast_errorcode(c, err);
-		return false;
-	}
-
-	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
- *
- * 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.
- */
-
-static bool html_convert(struct content *c)
-{
-	html_content *htmlc = (html_content *) c;
-	dom_exception exc; /* returned by libdom functions */
-
-	/* The quirk check and associated stylesheet fetch is "safe"
-	 * once the root node has been inserted into the document
-	 * which must have happened by this point in the parse.
-	 *
-	 * faliure to retrive the quirk mode or to start the
-	 * stylesheet fetch is non fatal as this "only" affects the
-	 * render and it would annoy the user to fail the entire
-	 * render for want of a quirks stylesheet.
-	 */
-	exc = dom_document_get_quirks_mode(htmlc->document, &htmlc->quirks);
-	if (exc == DOM_NO_ERR) {
-		html_css_quirks_stylesheets(htmlc);
-		NSLOG(netsurf, INFO, "quirks set to %d", htmlc->quirks);
-	}
-
-	htmlc->base.active--; /* the html fetch is no longer active */
-	NSLOG(netsurf, INFO, "%d fetches active (%p)", htmlc->base.active, c);
-
-	/* The parse cannot be completed here because it may be paused
-	 * untill all the resources being fetched have completed.
-	 */
-
-	/* if there are no active fetches in progress no scripts are
-	 * being fetched or they completed already.
-	 */
-	if (html_can_begin_conversion(htmlc)) {
-		return html_begin_conversion(htmlc);
-	}
-	return true;
-}
-
-/* Exported interface documented in html_internal.h */
-bool html_can_begin_conversion(html_content *htmlc)
-{
-	unsigned int i;
-
-	if (htmlc->base.active != 0)
-		return false;
-
-	for (i = 0; i != htmlc->stylesheet_count; i++) {
-		if (htmlc->stylesheets[i].modified)
-			return false;
-	}
-
-	return true;
-}
-
-bool
-html_begin_conversion(html_content *htmlc)
-{
-	dom_node *html;
-	nserror ns_error;
-	struct form *f;
-	dom_exception exc; /* returned by libdom functions */
-	dom_string *node_name = NULL;
-	dom_hubbub_error error;
-
-	/* The act of completing the parse can result in additional data 
-	 * being flushed through the parser. This may result in new style or 
-	 * script nodes, upon which the conversion depends. Thus, once we 
-	 * have completed the parse, we must check again to see if we can 
-	 * begin the conversion. If we can't, we must stop and wait for the 
-	 * new styles/scripts to be processed. Once they have been processed,
-	 * we will be called again to begin the conversion for real. Thus, 
-	 * we must also ensure that we don't attempt to complete the parse 
-	 * multiple times, so store a flag to indicate that parsing is
-	 * complete to avoid repeating the completion pointlessly.
-	 */
-	if (htmlc->parse_completed == false) {
-		NSLOG(netsurf, INFO, "Completing parse (%p)", htmlc);
-		/* complete parsing */
-		error = dom_hubbub_parser_completed(htmlc->parser);
-		if (error != DOM_HUBBUB_OK) {
-			NSLOG(netsurf, INFO, "Parsing failed");
-	
-			content_broadcast_errorcode(&htmlc->base, 
-						    libdom_hubbub_error_to_nserror(error));
-
-			return false;
-		}
-		htmlc->parse_completed = true;
-	}
-
-	if (html_can_begin_conversion(htmlc) == false) {
-		NSLOG(netsurf, INFO, "Can't begin conversion (%p)", htmlc);
-		/* We can't proceed (see commentary above) */
-		return true;
-	}
-
-	/* Give up processing if we've been aborted */
-	if (htmlc->aborted) {
-		NSLOG(netsurf, INFO, "Conversion aborted (%p) (active: %u)",
-		      htmlc, htmlc->base.active);
-		content_set_error(&htmlc->base);
-		content_broadcast_errorcode(&htmlc->base, NSERROR_STOPPED);
-		return false;
-	}
-
-	/* complete script execution */
-	html_script_exec(htmlc);
-
-	/* fire a simple event that bubbles named DOMContentLoaded at
-	 * the Document.
-	 */
-
-	/* get encoding */
-	if (htmlc->encoding == NULL) {
-		const char *encoding;
-
-		encoding = dom_hubbub_parser_get_encoding(htmlc->parser,
-					&htmlc->encoding_source);
-		if (encoding == NULL) {
-			content_broadcast_errorcode(&htmlc->base, 
-						    NSERROR_NOMEM);
-			return false;
-		}
-
-		htmlc->encoding = strdup(encoding);
-		if (htmlc->encoding == NULL) {
-			content_broadcast_errorcode(&htmlc->base, 
-						    NSERROR_NOMEM);
-			return false;
-		}
-	}
-
-	/* locate root element and ensure it is html */
-	exc = dom_document_get_document_element(htmlc->document, (void *) &html);
-	if ((exc != DOM_NO_ERR) || (html == NULL)) {
-		NSLOG(netsurf, INFO, "error retrieving html element from dom");
-		content_broadcast_errorcode(&htmlc->base, NSERROR_DOM);
-		return false;
-	}
-
-	exc = dom_node_get_node_name(html, &node_name);
-	if ((exc != DOM_NO_ERR) ||
-	    (node_name == NULL) ||
-	    (!dom_string_caseless_lwc_isequal(node_name,
-	    		corestring_lwc_html))) {
-		NSLOG(netsurf, INFO, "root element not html");
-		content_broadcast_errorcode(&htmlc->base, NSERROR_DOM);
-		dom_node_unref(html);
-		return false;
-	}
-	dom_string_unref(node_name);
-
-	/* Retrieve forms from parser */
-	htmlc->forms = html_forms_get_forms(htmlc->encoding,
-			(dom_html_document *) htmlc->document);
-	for (f = htmlc->forms; f != NULL; f = f->prev) {
-		nsurl *action;
-
-		/* Make all actions absolute */
-		if (f->action == NULL || f->action[0] == '\0') {
-			/* HTML5 4.10.22.3 step 9 */
-			nsurl *doc_addr = content_get_url(&htmlc->base);
-			ns_error = nsurl_join(htmlc->base_url,
-					      nsurl_access(doc_addr), 
-					      &action);
-		} else {
-			ns_error = nsurl_join(htmlc->base_url, 
-					      f->action, 
-					      &action);
-		}
-
-		if (ns_error != NSERROR_OK) {
-			content_broadcast_errorcode(&htmlc->base, ns_error);
-
-			dom_node_unref(html);
-			return false;
-		}
-
-		free(f->action);
-		f->action = strdup(nsurl_access(action));
-		nsurl_unref(action);
-		if (f->action == NULL) {
-			content_broadcast_errorcode(&htmlc->base, 
-						    NSERROR_NOMEM);
-
-			dom_node_unref(html);
-			return false;
-		}
-
-		/* Ensure each form has a document encoding */
-		if (f->document_charset == NULL) {
-			f->document_charset = strdup(htmlc->encoding);
-			if (f->document_charset == NULL) {
-				content_broadcast_errorcode(&htmlc->base, 
-							    NSERROR_NOMEM);
-				dom_node_unref(html);
-				return false;
-			}
-		}
-	}
-
-	dom_node_unref(html);
-
-	if (htmlc->base.active == 0) {
-		html_finish_conversion(htmlc);
-	}
-
-	return true;
-}
-
-
-/**
- * Stop loading a CONTENT_HTML.
- *
- * called when the content is aborted. This must clean up any state
- * created during the fetch.
- */
-
-static void html_stop(struct content *c)
-{
-	html_content *htmlc = (html_content *) c;
-
-	/* invalidate the html content reference to the javascript context
-	 * as it is about to become invalid and must not be used any
-	 * more.
-	 */
-	html_script_invalidate_ctx(htmlc);
-
-	switch (c->status) {
-	case CONTENT_STATUS_LOADING:
-		/* Still loading; simply flag that we've been aborted
-		 * html_convert/html_finish_conversion will do the rest */
-		htmlc->aborted = true;
-		break;
-
-	case CONTENT_STATUS_READY:
-		html_object_abort_objects(htmlc);
-
-		/* If there are no further active fetches and we're still
- 		 * in the READY state, transition to the DONE state. */
-		if (c->status == CONTENT_STATUS_READY && c->active == 0) {
-			content_set_done(c);
-		}
-
-		break;
-
-	case CONTENT_STATUS_DONE:
-		/* Nothing to do */
-		break;
-
-	default:
-		NSLOG(netsurf, INFO, "Unexpected status %d (%p)", c->status,
-		      c);
-		assert(0);
-	}
-}
-
-
-/**
- * Reformat a CONTENT_HTML to a new width.
- */
-
-static void html_reformat(struct content *c, int width, int height)
-{
-	html_content *htmlc = (html_content *) c;
-	struct box *layout;
-	uint64_t ms_before;
-	uint64_t ms_after;
-	uint64_t ms_interval;
-
-	nsu_getmonotonic_ms(&ms_before);
-
-	htmlc->reflowing = true;
-
-	htmlc->len_ctx.vw = width;
-	htmlc->len_ctx.vh = height;
-	htmlc->len_ctx.root_style = htmlc->layout->style;
-
-	layout_document(htmlc, width, height);
-	layout = htmlc->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].width +
-		layout->margin[RIGHT];
-	c->height = layout->y + layout->padding[TOP] + layout->height +
-		layout->padding[BOTTOM] + layout->border[BOTTOM].width +
-		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;
-
-	selection_reinit(&htmlc->sel, htmlc->layout);
-
-	htmlc->reflowing = false;
-
-	/* calculate next reflow time at three times what it took to reflow */
-	nsu_getmonotonic_ms(&ms_after);
-
-	ms_interval = (ms_before - ms_after) * 3;
-	if (ms_interval < (nsoption_uint(min_reflow_period) * 10)) {
-		ms_interval = nsoption_uint(min_reflow_period) * 10;
-	}
-	c->reformat_time = ms_after + ms_interval;
-}
-
-
-/**
- * Redraw a box.
- *
- * \param  h	content containing the box, of type CONTENT_HTML
- * \param  box  box to redraw
- */
-
-void html_redraw_a_box(hlcache_handle *h, struct box *box)
-{
-	int x, y;
-
-	box_coords(box, &x, &y);
-
-	content_request_redraw(h, x, y,
-			box->padding[LEFT] + box->width + box->padding[RIGHT],
-			box->padding[TOP] + box->height + box->padding[BOTTOM]);
-}
-
-
-/**
- * Redraw a box.
- *
- * \param html  content containing the box, of type CONTENT_HTML
- * \param box  box to redraw.
- */
-
-void html__redraw_a_box(struct html_content *html, struct box *box)
-{
-	int x, y;
-
-	box_coords(box, &x, &y);
-
-	content__request_redraw((struct content *)html, x, y,
-			box->padding[LEFT] + box->width + box->padding[RIGHT],
-			box->padding[TOP] + box->height + box->padding[BOTTOM]);
-}
-
-static 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) {
-				nsurl_unref(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;
-	}
-}
-
-static 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) {
-			nsurl_unref(iframe->url);
-			iframe->url = NULL;
-		}
-		talloc_free(iframe);
-	}
-}
-
-
-static void html_free_layout(html_content *htmlc)
-{
-	if (htmlc->bctx != NULL) {
-		/* freeing talloc context should let the entire box
-		 * set be destroyed 
-		 */
-		talloc_free(htmlc->bctx);
-	}
-}
-
-/**
- * Destroy a CONTENT_HTML and free all resources it owns.
- */
-
-static void html_destroy(struct content *c)
-{
-	html_content *html = (html_content *) c;
-	struct form *f, *g;
-
-	NSLOG(netsurf, INFO, "content %p", c);
-
-	/* Destroy forms */
-	for (f = html->forms; f != NULL; f = g) {
-		g = f->prev;
-
-		form_free(f);
-	}
-
-	imagemap_destroy(html);
-
-	if (c->refresh)
-		nsurl_unref(c->refresh);
-
-	if (html->base_url)
-		nsurl_unref(html->base_url);
-
-	if (html->parser != NULL) {
-		dom_hubbub_parser_destroy(html->parser);
-		html->parser = NULL;
-	}
-
-	if (html->document != NULL) {
-		dom_node_unref(html->document);
-		html->document = NULL;
-	}
-
-	if (html->title != NULL) {
-		dom_node_unref(html->title);
-		html->title = NULL;
-	}
-
-	/* Free encoding */
-	if (html->encoding != NULL) {
-		free(html->encoding);
-		html->encoding = NULL;
-	}
-
-	/* Free base target */
-	if (html->base_target != NULL) {
-	 	free(html->base_target);
-	 	html->base_target = NULL;
-	}
-
-	/* Free frameset */
-	if (html->frameset != NULL) {
-		html_destroy_frameset(html->frameset);
-		talloc_free(html->frameset);
-		html->frameset = NULL;
-	}
-
-	/* Free iframes */
-	if (html->iframe != NULL) {
-		html_destroy_iframe(html->iframe);
-		html->iframe = NULL;
-	}
-
-	/* Destroy selection context */
-	if (html->select_ctx != NULL) {
-		css_select_ctx_destroy(html->select_ctx);
-		html->select_ctx = NULL;
-	}
-
-	if (html->universal != NULL) {
-		lwc_string_unref(html->universal);
-		html->universal = NULL;
-	}
-
-	/* Free stylesheets */
-	html_css_free_stylesheets(html);
-
-	/* Free scripts */
-	html_script_free(html);
-
-	/* Free objects */
-	html_object_free_objects(html);
-
-	/* free layout */
-	html_free_layout(html);
-}
-
-
-static nserror html_clone(const struct content *old, struct content **newc)
-{
-	/** \todo Clone HTML specifics */
-
-	/* In the meantime, we should never be called, as HTML contents
-	 * cannot be shared and we're not intending to fix printing's
-	 * cloning of documents. */
-	assert(0 && "html_clone should never be called");
-
-	return true;
-}
-
-
-/**
- * Handle a window containing a CONTENT_HTML being opened.
- */
-
-static void
-html_open(struct content *c,
-	  struct browser_window *bw,
-	  struct content *page,
-	  struct object_params *params)
-{
-	html_content *html = (html_content *) c;
-
-	html->bw = bw;
-	html->page = (html_content *) page;
-
-	html->drag_type = HTML_DRAG_NONE;
-	html->drag_owner.no_owner = true;
-
-	/* text selection */
-	selection_init(&html->sel, html->layout, &html->len_ctx);
-	html->selection_type = HTML_SELECTION_NONE;
-	html->selection_owner.none = true;
-
-	html_object_open_objects(html, bw);
-}
-
-
-/**
- * Handle a window containing a CONTENT_HTML being closed.
- */
-
-static void html_close(struct content *c)
-{
-	html_content *htmlc = (html_content *) c;
-
-	selection_clear(&htmlc->sel, false);
-
-	if (htmlc->search != NULL) {
-		search_destroy_context(htmlc->search);
-	}
-
-	/* clear the html content reference to the browser window */
-	htmlc->bw = NULL;
-
-	/* invalidate the html content reference to the javascript context
-	 * as it is about to become invalid and must not be used any
-	 * more.
-	 */
-	html_script_invalidate_ctx(htmlc);
-
-	/* remove all object references from the html content */
-	html_object_close_objects(htmlc);
-}
-
-
-/**
- * Return an HTML content's selection context
- */
-
-static void html_clear_selection(struct content *c)
-{
-	html_content *html = (html_content *) c;
-
-	switch (html->selection_type) {
-	case HTML_SELECTION_NONE:
-		/* Nothing to do */
-		assert(html->selection_owner.none == true);
-		break;
-	case HTML_SELECTION_TEXTAREA:
-		textarea_clear_selection(html->selection_owner.textarea->
-				gadget->data.text.ta);
-		break;
-	case HTML_SELECTION_SELF:
-		assert(html->selection_owner.none == false);
-		selection_clear(&html->sel, true);
-		break;
-	case HTML_SELECTION_CONTENT:
-		content_clear_selection(html->selection_owner.content->object);
-		break;
-	default:
-		break;
-	}
-
-	/* There is no selection now. */
-	html->selection_type = HTML_SELECTION_NONE;
-	html->selection_owner.none = true;
-}
-
-
-/**
- * Return an HTML content's selection context
- */
-
-static char *html_get_selection(struct content *c)
-{
-	html_content *html = (html_content *) c;
-
-	switch (html->selection_type) {
-	case HTML_SELECTION_TEXTAREA:
-		return textarea_get_selection(html->selection_owner.textarea->
-				gadget->data.text.ta);
-	case HTML_SELECTION_SELF:
-		assert(html->selection_owner.none == false);
-		return selection_get_copy(&html->sel);
-	case HTML_SELECTION_CONTENT:
-		return content_get_selection(
-				html->selection_owner.content->object);
-	case HTML_SELECTION_NONE:
-		/* Nothing to do */
-		assert(html->selection_owner.none == true);
-		break;
-	default:
-		break;
-	}
-
-	return NULL;
-}
-
-
-/**
- * Get access to any content, link URLs and objects (images) currently
- * at the given (x, y) coordinates.
- *
- * \param[in] c html content to look inside
- * \param[in] x x-coordinate of point of interest
- * \param[in] y y-coordinate of point of interest
- * \param[out] data Positional features struct to be updated with any
- *             relevent content, or set to NULL if none.
- * \return NSERROR_OK on success else appropriate error code.
- */
-static nserror
-html_get_contextual_content(struct content *c, int x, int y,
-			    struct browser_window_features *data)
-{
-	html_content *html = (html_content *) c;
-
-	struct box *box = html->layout;
-	struct box *next;
-	int box_x = 0, box_y = 0;
-
-	while ((next = box_at_point(&html->len_ctx, box, x, y,
-			&box_x, &box_y)) != NULL) {
-		box = next;
-
-		/* hidden boxes are ignored */
-		if ((box->style != NULL) &&
-		    css_computed_visibility(box->style) == CSS_VISIBILITY_HIDDEN) {
-			continue;
-		}
-
-		if (box->iframe) {
-			browser_window_get_features(box->iframe,
-					x - box_x, y - box_y, data);
-		}
-
-		if (box->object)
-			content_get_contextual_content(box->object,
-					x - box_x, y - box_y, data);
-
-		if (box->object)
-			data->object = box->object;
-
-		if (box->href)
-			data->link = box->href;
-
-		if (box->usemap) {
-			const char *target = NULL;
-			nsurl *url = imagemap_get(html, box->usemap, box_x,
-					box_y, x, y, &target);
-			/* Box might have imagemap, but no actual link area
-			 * at point */
-			if (url != NULL)
-				data->link = url;
-		}
-		if (box->gadget) {
-			switch (box->gadget->type) {
-			case GADGET_TEXTBOX:
-			case GADGET_TEXTAREA:
-			case GADGET_PASSWORD:
-				data->form_features = CTX_FORM_TEXT;
-				break;
-
-			case GADGET_FILE:
-				data->form_features = CTX_FORM_FILE;
-				break;
-
-			default:
-				data->form_features = CTX_FORM_NONE;
-				break;
-			}
-		}
-	}
-	return NSERROR_OK;
-}
-
-
-/**
- * Scroll deepest thing within the content which can be scrolled at given point
- *
- * \param c	html content to look inside
- * \param x	x-coordinate of point of interest
- * \param y	y-coordinate of point of interest
- * \param scrx	number of px try to scroll something in x direction
- * \param scry	number of px try to scroll something in y direction
- * \return true iff scroll was consumed by something in the content
- */
-static bool
-html_scroll_at_point(struct content *c, int x, int y, int scrx, int scry)
-{
-	html_content *html = (html_content *) c;
-
-	struct box *box = html->layout;
-	struct box *next;
-	int box_x = 0, box_y = 0;
-	bool handled_scroll = false;
-
-	/* TODO: invert order; visit deepest box first */
-
-	while ((next = box_at_point(&html->len_ctx, box, x, y,
-			&box_x, &box_y)) != NULL) {
-		box = next;
-
-		if (box->style && css_computed_visibility(box->style) ==
-				CSS_VISIBILITY_HIDDEN)
-			continue;
-
-		/* Pass into iframe */
-		if (box->iframe && browser_window_scroll_at_point(box->iframe,
-				x - box_x, y - box_y, scrx, scry) == true)
-			return true;
-
-		/* Pass into textarea widget */
-		if (box->gadget && (box->gadget->type == GADGET_TEXTAREA ||
-				box->gadget->type == GADGET_PASSWORD ||
-				box->gadget->type == GADGET_TEXTBOX) &&
-				textarea_scroll(box->gadget->data.text.ta,
-						scrx, scry) == true)
-			return true;
-
-		/* Pass into object */
-		if (box->object != NULL && content_scroll_at_point(
-				box->object, x - box_x, y - box_y,
-				scrx, scry) == true)
-			return true;
-
-		/* Handle box scrollbars */
-		if (box->scroll_y && scrollbar_scroll(box->scroll_y, scry))
-			handled_scroll = true;
-
-		if (box->scroll_x && scrollbar_scroll(box->scroll_x, scrx))
-			handled_scroll = true;
-
-		if (handled_scroll == true)
-			return true;
-	}
-
-	return false;
-}
-
-/** Helper for file gadgets to store their filename unencoded on the
- * dom node associated with the gadget.
- *
- * \todo Get rid of this crap eventually
- */
-static void html__dom_user_data_handler(dom_node_operation operation,
-		dom_string *key, void *_data, struct dom_node *src,
-		struct dom_node *dst)
-{
-	char *oldfile;
-	char *data = (char *)_data;
-
-	if (!dom_string_isequal(corestring_dom___ns_key_file_name_node_data,
-				key) || data == NULL) {
-		return;
-	}
-
-	switch (operation) {
-	case DOM_NODE_CLONED:
-		if (dom_node_set_user_data(dst,
-					   corestring_dom___ns_key_file_name_node_data,
-					   strdup(data), html__dom_user_data_handler,
-					   &oldfile) == DOM_NO_ERR) {
-			if (oldfile != NULL)
-				free(oldfile);
-		}
-		break;
-
-	case DOM_NODE_RENAMED:
-	case DOM_NODE_IMPORTED:
-	case DOM_NODE_ADOPTED:
-		break;
-
-	case DOM_NODE_DELETED:
-		free(data);
-		break;
-	default:
-		NSLOG(netsurf, INFO, "User data operation not handled.");
-		assert(0);
-	}
-}
-
-static void html__set_file_gadget_filename(struct content *c,
-	struct form_control *gadget, const char *fn)
-{
-	nserror ret;
-	char *utf8_fn, *oldfile = NULL;
-	html_content *html = (html_content *)c;
-	struct box *file_box = gadget->box;
-
-	ret = guit->utf8->local_to_utf8(fn, 0, &utf8_fn);
-	if (ret != NSERROR_OK) {
-		assert(ret != NSERROR_BAD_ENCODING);
-		NSLOG(netsurf, INFO,
-		      "utf8 to local encoding conversion failed");
-		/* Load was for us - just no memory */
-		return;		
-	}
-	
-	form_gadget_update_value(gadget, utf8_fn);
-
-	/* corestring_dom___ns_key_file_name_node_data */
-	if (dom_node_set_user_data((dom_node *)file_box->gadget->node,
-				   corestring_dom___ns_key_file_name_node_data,
-				   strdup(fn), html__dom_user_data_handler,
-				   &oldfile) == DOM_NO_ERR) {
-		if (oldfile != NULL)
-			free(oldfile);
-	}
-
-	/* Redraw box. */
-	html__redraw_a_box(html, file_box);		
-}
-
-void html_set_file_gadget_filename(struct hlcache_handle *hl,
-	struct form_control *gadget, const char *fn)
-{
-	return html__set_file_gadget_filename(hlcache_handle_get_content(hl),
-		gadget, fn);
-}
-
-/**
- * Drop a file onto a content at a particular point, or determine if a file
- * may be dropped onto the content at given point.
- *
- * \param c	html content to look inside
- * \param x	x-coordinate of point of interest
- * \param y	y-coordinate of point of interest
- * \param file	path to file to be dropped, or NULL to know if drop allowed
- * \return true iff file drop has been handled, or if drop possible (NULL file)
- */
-static bool html_drop_file_at_point(struct content *c, int x, int y, char *file)
-{
-	html_content *html = (html_content *) c;
-
-	struct box *box = html->layout;
-	struct box *next;
-	struct box *file_box = NULL;
-	struct box *text_box = NULL;
-	int box_x = 0, box_y = 0;
-
-	/* Scan box tree for boxes that can handle drop */
-	while ((next = box_at_point(&html->len_ctx, box, x, y,
-			&box_x, &box_y)) != NULL) {
-		box = next;
-
-		if (box->style && css_computed_visibility(box->style) ==
-				CSS_VISIBILITY_HIDDEN)
-			continue;
-
-		if (box->iframe)
-			return browser_window_drop_file_at_point(box->iframe,
-					x - box_x, y - box_y, file);
-
-		if (box->object && content_drop_file_at_point(box->object,
-					x - box_x, y - box_y, file) == true)
-			return true;
-
-		if (box->gadget) {
-			switch (box->gadget->type) {
-				case GADGET_FILE:
-					file_box = box;
-				break;
-
-				case GADGET_TEXTBOX:
-				case GADGET_TEXTAREA:
-				case GADGET_PASSWORD:
-					text_box = box;
-					break;
-
-				default:	/* appease compiler */
-					break;
-			}
-		}
-	}
-
-	if (!file_box && !text_box)
-		/* No box capable of handling drop */
-		return false;
-
-	if (file == NULL)
-		/* There is a box capable of handling drop here */
-		return true;
-
-	/* Handle the drop */
-	if (file_box) {
-		/* File dropped on file input */
-		html__set_file_gadget_filename(c, file_box->gadget, file);
-
-	} else {
-		/* File dropped on text input */
-
-		size_t file_len;
-		FILE *fp = NULL;
-		char *buffer;
-		char *utf8_buff;
-		nserror ret;
-		unsigned int size;
-		int bx, by;
-
-		/* Open file */
-		fp = fopen(file, "rb");
-		if (fp == NULL) {
-			/* Couldn't open file, but drop was for us */
-			return true;
-		}
-
-		/* Get filesize */
-		fseek(fp, 0, SEEK_END);
-		file_len = ftell(fp);
-		fseek(fp, 0, SEEK_SET);
-
-		if ((long)file_len == -1) {
-			/* unable to get file length, but drop was for us */
-			fclose(fp);
-			return true;
-		}
-
-		/* Allocate buffer for file data */
-		buffer = malloc(file_len + 1);
-		if (buffer == NULL) {
-			/* No memory, but drop was for us */
-			fclose(fp);
-			return true;
-		}
-
-		/* Stick file into buffer */
-		if (file_len != fread(buffer, 1, file_len, fp)) {
-			/* Failed, but drop was for us */
-			free(buffer);
-			fclose(fp);
-			return true;
-		}
-
-		/* Done with file */
-		fclose(fp);
-
-		/* Ensure buffer's string termination */
-		buffer[file_len] = '\0';
-
-		/* TODO: Sniff for text? */
-
-		/* Convert to UTF-8 */
-		ret = guit->utf8->local_to_utf8(buffer, file_len, &utf8_buff);
-		if (ret != NSERROR_OK) {
-			/* bad encoding shouldn't happen */
-			assert(ret != NSERROR_BAD_ENCODING);
-			NSLOG(netsurf, INFO, "local to utf8 encoding failed");
-			free(buffer);
-			guit->misc->warning("NoMemory", NULL);
-			return true;
-		}
-
-		/* Done with buffer */
-		free(buffer);
-
-		/* Get new length */
-		size = strlen(utf8_buff);
-
-		/* Simulate a click over the input box, to place caret */
-		box_coords(text_box, &bx, &by);
-		textarea_mouse_action(text_box->gadget->data.text.ta,
-				BROWSER_MOUSE_PRESS_1, x - bx, y - by);
-
-		/* Paste the file as text */
-		textarea_drop_text(text_box->gadget->data.text.ta,
-				utf8_buff, size);
-
-		free(utf8_buff);
-	}
-
-	return true;
-}
-
-
-/**
- * set debug status.
- *
- * \param c The content to debug
- * \param op The debug operation type
- */
-static nserror
-html_debug(struct content *c, enum content_debug op)
-{
-	html_redraw_debug = !html_redraw_debug;
-
-	return NSERROR_OK;
-}
-
-
-/**
- * Dump debug info concerning the html_content
- *
- * \param c The content to debug
- * \param f The file to dump to
- * \param op The debug dump type
- */
-static nserror
-html_debug_dump(struct content *c, FILE *f, enum content_debug op)
-{
-	html_content *htmlc = (html_content *)c;
-	dom_node *html;
-	dom_exception exc; /* returned by libdom functions */
-	nserror ret;
-
-	assert(htmlc != NULL);
-
-	if (op == CONTENT_DEBUG_RENDER) {
-		assert(htmlc->layout != NULL);
-		box_dump(f, htmlc->layout, 0, true);
-		ret = NSERROR_OK;
-	} else {
-		if (htmlc->document == NULL) {
-			NSLOG(netsurf, INFO, "No document to dump");
-			return NSERROR_DOM;
-		}
-
-		exc = dom_document_get_document_element(htmlc->document, (void *) &html);
-		if ((exc != DOM_NO_ERR) || (html == NULL)) {
-			NSLOG(netsurf, INFO, "Unable to obtain root node");
-			return NSERROR_DOM;
-		}
-
-		ret = libdom_dump_structure(html, f, 0);
-
-		NSLOG(netsurf, INFO, "DOM structure dump returning %d", ret);
-
-		dom_node_unref(html);
-	}
-
-	return ret;
-}
-
-
-#if ALWAYS_DUMP_FRAMESET
-/**
- * Print a frameset tree to stderr.
- */
-
-static 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);
-			}
-		}
-	}
-}
-
-#endif
-
-/**
- * Retrieve HTML document tree
- *
- * \param h  HTML content to retrieve document tree from
- * \return Pointer to document tree
- */
-dom_document *html_get_document(hlcache_handle *h)
-{
-	html_content *c = (html_content *) hlcache_handle_get_content(h);
-
-	assert(c != NULL);
-
-	return c->document;
-}
-
-/**
- * Retrieve box tree
- *
- * \param h  HTML content to retrieve tree from
- * \return Pointer to box tree
- *
- * \todo This API must die, as must all use of the box tree outside render/
- */
-struct box *html_get_box_tree(hlcache_handle *h)
-{
-	html_content *c = (html_content *) hlcache_handle_get_content(h);
-
-	assert(c != NULL);
-
-	return c->layout;
-}
-
-/**
- * Retrieve the charset of an HTML document
- *
- * \param c Content to retrieve charset from
- * \param op The content encoding operation to perform.
- * \return Pointer to charset, or NULL
- */
-static const char *html_encoding(const struct content *c, enum content_encoding_type op)
-{
-	html_content *html = (html_content *) c;
-	static char enc_token[10] = "Encoding0";
-
-	assert(html != NULL);
-
-	if (op == CONTENT_ENCODING_SOURCE) {
-		enc_token[8] = '0' + html->encoding_source;
-		return messages_get(enc_token);
-	}
-
-	return html->encoding;
-}
-
-
-/**
- * Retrieve framesets used in an HTML document
- *
- * \param h  Content to inspect
- * \return Pointer to framesets, or NULL if none
- */
-struct content_html_frames *html_get_frameset(hlcache_handle *h)
-{
-	html_content *c = (html_content *) hlcache_handle_get_content(h);
-
-	assert(c != NULL);
-
-	return c->frameset;
-}
-
-/**
- * Retrieve iframes used in an HTML document
- *
- * \param h  Content to inspect
- * \return Pointer to iframes, or NULL if none
- */
-struct content_html_iframe *html_get_iframe(hlcache_handle *h)
-{
-	html_content *c = (html_content *) hlcache_handle_get_content(h);
-
-	assert(c != NULL);
-
-	return c->iframe;
-}
-
-/**
- * Retrieve an HTML content's base URL
- *
- * \param h  Content to retrieve base target from
- * \return Pointer to URL
- */
-nsurl *html_get_base_url(hlcache_handle *h)
-{
-	html_content *c = (html_content *) hlcache_handle_get_content(h);
-
-	assert(c != NULL);
-
-	return c->base_url;
-}
-
-/**
- * Retrieve an HTML content's base target
- *
- * \param h  Content to retrieve base target from
- * \return Pointer to target, or NULL if none
- */
-const char *html_get_base_target(hlcache_handle *h)
-{
-	html_content *c = (html_content *) hlcache_handle_get_content(h);
-
-	assert(c != NULL);
-
-	return c->base_target;
-}
-
-
-/**
- * Retrieve layout coordinates of box with given id
- *
- * \param h        HTML document to search
- * \param frag_id  String containing an element id
- * \param x        Updated to global x coord iff id found
- * \param y        Updated to global y coord iff id found
- * \return  true iff id found
- */
-bool html_get_id_offset(hlcache_handle *h, lwc_string *frag_id, int *x, int *y)
-{
-	struct box *pos;
-	struct box *layout;
-
-	if (content_get_type(h) != CONTENT_HTML)
-		return false;
-
-	layout = html_get_box_tree(h);
-
-	if ((pos = box_find_by_id(layout, frag_id)) != 0) {
-		box_coords(pos, x, y);
-		return true;
-	}
-	return false;
-}
-
-/**
- * Compute the type of a content
- *
- * \return CONTENT_HTML
- */
-static content_type html_content_type(void)
-{
-	return CONTENT_HTML;
-}
-
-
-static void html_fini(void)
-{
-	html_css_fini();
-}
-
-static const content_handler html_content_handler = {
-	.fini = html_fini,
-	.create = html_create,
-	.process_data = html_process_data,
-	.data_complete = html_convert,
-	.reformat = html_reformat,
-	.destroy = html_destroy,
-	.stop = html_stop,
-	.mouse_track = html_mouse_track,
-	.mouse_action = html_mouse_action,
-	.keypress = html_keypress,
-	.redraw = html_redraw,
-	.open = html_open,
-	.close = html_close,
-	.get_selection = html_get_selection,
-	.clear_selection = html_clear_selection,
-	.get_contextual_content = html_get_contextual_content,
-	.scroll_at_point = html_scroll_at_point,
-	.drop_file_at_point = html_drop_file_at_point,
-	.search = html_search,
-	.search_clear = html_search_clear,
-	.debug_dump = html_debug_dump,
-	.debug = html_debug,
-	.clone = html_clone,
-	.get_encoding = html_encoding,
-	.type = html_content_type,
-	.no_share = true,
-};
-
-nserror html_init(void)
-{
-	uint32_t i;
-	nserror error;
-
-	error = html_css_init();
-	if (error != NSERROR_OK)
-		goto error;
-
-	for (i = 0; i < NOF_ELEMENTS(html_types); i++) {
-		error = content_factory_register_handler(html_types[i],
-				&html_content_handler);
-		if (error != NSERROR_OK)
-			goto error;
-	}
-
-	return NSERROR_OK;
-
-error:
-	html_fini();
-
-	return error;
-}
-
-/**
- * Get the browser window containing an HTML content
- *
- * \param  c	HTML content
- * \return the browser window
- */
-struct browser_window *html_get_browser_window(struct content *c)
-{
-	html_content *html = (html_content *) c;
-
-	assert(c != NULL);
-	assert(c->handler == &html_content_handler);
-
-	return html->bw;
-}