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authorVincent Sanders <vince@kyllikki.org>2020-05-05 20:05:37 +0100
committerVincent Sanders <vince@kyllikki.org>2020-05-05 20:05:37 +0100
commitd9a593c984b1e0d3f433d3271569d31d66569e18 (patch)
treee03fe77bb9d424e1772cbc6c79ab4857c7e362be /content/handlers/html/dom_event.c
parent1d8542166cc2309733e13fc57df596ea9462ef7b (diff)
downloadnetsurf-d9a593c984b1e0d3f433d3271569d31d66569e18.tar.gz
netsurf-d9a593c984b1e0d3f433d3271569d31d66569e18.tar.bz2
split dom event handling into separate module
Diffstat (limited to 'content/handlers/html/dom_event.c')
-rw-r--r--content/handlers/html/dom_event.c790
1 files changed, 790 insertions, 0 deletions
diff --git a/content/handlers/html/dom_event.c b/content/handlers/html/dom_event.c
new file mode 100644
index 000000000..4468e8296
--- /dev/null
+++ b/content/handlers/html/dom_event.c
@@ -0,0 +1,790 @@
+/*
+ * Copyright 2010 Michael Drake <tlsa@netsurf-browser.org>
+ * Copyright 2020 Vincent Sanders <vince@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
+ * Implementation of HTML content DOM event handling.
+ */
+
+#include "utils/corestrings.h"
+#include "utils/nsoption.h"
+#include "utils/log.h"
+#include "utils/ascii.h"
+#include "utils/string.h"
+#include "javascript/js.h"
+
+#include "html/private.h"
+#include "html/object.h"
+#include "html/css.h"
+#include "html/box.h"
+#include "html/box_construct.h"
+#include "html/form_internal.h"
+#include "html/dom_event.h"
+
+
+/**
+ * process a base element being inserted into the DOM
+ *
+ * \param htmlc The html content containing the DOM
+ * \param node The DOM node being inserted
+ * \return NSERROR_OK on success else appropriate error code
+ */
+static bool html_process_inserted_base(html_content *htmlc, 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 (htmlc->base_url != NULL) {
+ nsurl_unref(htmlc->base_url);
+ }
+ htmlc->base_url = url;
+ }
+ }
+
+
+ /* get target attribute if present and not already set */
+ if (htmlc->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)) {
+ htmlc->base_target = strdup(dom_string_data(atr_string));
+ }
+ dom_string_unref(atr_string);
+ }
+
+ return true;
+}
+
+
+/**
+ * process a canvas element being inserted into the DOM
+ *
+ * \param htmlc The html content containing the DOM
+ * \param node The DOM node being inserted
+ * \return NSERROR_OK on success else appropriate error code
+ */
+static nserror html_process_inserted_canvas(html_content *htmlc, dom_node *node)
+{
+ return NSERROR_OK;
+}
+
+
+/**
+ * Process img element being inserted into the DOM.
+ *
+ * \param htmlc The html content containing the DOM
+ * \param node The DOM node being inserted
+ * \return NSERROR_OK on success else appropriate error code
+ */
+static bool html_process_inserted_img(html_content *htmlc, 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(htmlc->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(htmlc, url, NULL, CONTENT_IMAGE, false);
+ nsurl_unref(url);
+
+ return success;
+}
+
+
+/**
+ * process a LINK element being inserted into the DOM
+ *
+ * \note only the http-equiv attribute for refresh is currently considered
+ *
+ * \param htmlc The html content containing the DOM
+ * \param n The DOM node being inserted
+ * \return NSERROR_OK on success else appropriate error code
+ */
+static bool html_process_inserted_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;
+
+ /* Handle stylesheet loading */
+ html_css_process_link(c, (dom_node *)node);
+
+ /* try Generic link handling */
+
+ 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 */
+ (void)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 */
+ (void)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 */
+ (void)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 */
+ (void)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;
+}
+
+
+/* handler for a SCRIPT which has been added to a tree */
+static void
+dom_SCRIPT_showed_up(html_content *htmlc, dom_html_script_element *script)
+{
+ dom_exception exc;
+ dom_html_script_element_flags flags;
+ dom_hubbub_error res;
+ bool within;
+
+ if (!htmlc->enable_scripting) {
+ NSLOG(netsurf, INFO, "Encountered a script, but scripting is off, ignoring");
+ return;
+ }
+
+ NSLOG(netsurf, DEEPDEBUG, "Encountered a script, node %p showed up", script);
+
+ exc = dom_html_script_element_get_flags(script, &flags);
+ if (exc != DOM_NO_ERR) {
+ NSLOG(netsurf, DEEPDEBUG, "Unable to retrieve flags, giving up");
+ return;
+ }
+
+ if (flags & DOM_HTML_SCRIPT_ELEMENT_FLAG_PARSER_INSERTED) {
+ NSLOG(netsurf, DEBUG, "Script was parser inserted, skipping");
+ return;
+ }
+
+ exc = dom_node_contains(htmlc->document, script, &within);
+ if (exc != DOM_NO_ERR) {
+ NSLOG(netsurf, DEBUG, "Unable to determine if script was within document, ignoring");
+ return;
+ }
+
+ if (!within) {
+ NSLOG(netsurf, DEBUG, "Script was not within the document, ignoring for now");
+ return;
+ }
+
+ res = html_process_script(htmlc, (dom_node *) script);
+ if (res == DOM_HUBBUB_OK) {
+ NSLOG(netsurf, DEEPDEBUG, "Inserted script has finished running");
+ } else {
+ if (res == (DOM_HUBBUB_HUBBUB_ERR | HUBBUB_PAUSED)) {
+ NSLOG(netsurf, DEEPDEBUG, "Inserted script has launced asynchronously");
+ } else {
+ NSLOG(netsurf, DEEPDEBUG, "Failure starting script");
+ }
+ }
+}
+
+
+/**
+ * process a META element being inserted into the DOM
+ *
+ * \note only the http-equiv attribute for refresh is currently considered
+ *
+ * \param htmlc The html content containing the DOM
+ * \param n The DOM node being inserted
+ * \return NSERROR_OK on success else appropriate error code
+ */
+static nserror html_process_inserted_meta(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;
+
+ if (c->refresh) {
+ /* refresh already delt with */
+ return 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;
+}
+
+
+/**
+ * Process title element being inserted into the DOM.
+ *
+ * https://html.spec.whatwg.org/multipage/semantics.html#the-title-element
+ *
+ * \param htmlc The html content containing the DOM
+ * \param node The DOM node being inserted
+ * \return NSERROR_OK on success else appropriate error code
+ */
+static nserror html_process_inserted_title(html_content *htmlc, dom_node *node)
+{
+ if (htmlc->title == NULL) {
+ /* only the first title is considered */
+ htmlc->title = dom_node_ref(node);
+ }
+ return NSERROR_OK;
+}
+
+
+/** 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;
+}
+
+
+/**
+ * Deal with input elements being modified by resyncing their gadget
+ * if they have one.
+ */
+static void html_texty_element_update(html_content *htmlc, dom_node *node)
+{
+ struct box *box = box_for_node(node);
+ if (box == NULL) {
+ return; /* No Box (yet?) so no gadget to update */
+ }
+ if (box->gadget == NULL) {
+ return; /* No gadget yet (under construction perhaps?) */
+ }
+ form_gadget_sync_with_dom(box->gadget);
+ /* And schedule a redraw for the box */
+ html__redraw_a_box(htmlc, box);
+}
+
+
+/**
+ * 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)) {
+ /* failed to obtain the event target node */
+ return;
+ }
+
+ 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_BASE:
+ html_process_inserted_base(htmlc, (dom_node *)node);
+ break;
+
+ case DOM_HTML_ELEMENT_TYPE_CANVAS:
+ html_process_inserted_canvas(htmlc, (dom_node *)node);
+ break;
+
+ case DOM_HTML_ELEMENT_TYPE_IMG:
+ html_process_inserted_img(htmlc, (dom_node *)node);
+ break;
+
+ case DOM_HTML_ELEMENT_TYPE_LINK:
+ html_process_inserted_link(htmlc, (dom_node *)node);
+ break;
+
+ case DOM_HTML_ELEMENT_TYPE_META:
+ html_process_inserted_meta(htmlc, (dom_node *)node);
+ break;
+
+ case DOM_HTML_ELEMENT_TYPE_STYLE:
+ html_css_process_style(htmlc, (dom_node *)node);
+ break;
+
+ case DOM_HTML_ELEMENT_TYPE_SCRIPT:
+ dom_SCRIPT_showed_up(htmlc,
+ (dom_html_script_element *)node);
+ break;
+
+ case DOM_HTML_ELEMENT_TYPE_TITLE:
+ html_process_inserted_title(htmlc, (dom_node *)node);
+ break;
+
+ default:
+ break;
+ }
+
+ if (htmlc->enable_scripting) {
+ /* ensure javascript context is available */
+ if (htmlc->jsthread == NULL) {
+ union content_msg_data msg_data;
+
+ msg_data.jsthread = &htmlc->jsthread;
+ content_broadcast(&htmlc->base,
+ CONTENT_MSG_GETTHREAD,
+ &msg_data);
+ NSLOG(netsurf, INFO,
+ "javascript context: %p (htmlc: %p)",
+ htmlc->jsthread,
+ htmlc);
+ }
+ if (htmlc->jsthread != NULL) {
+ js_handle_new_element(htmlc->jsthread,
+ (dom_element *) node);
+ }
+ }
+ }
+ dom_node_unref(node);
+}
+
+
+/**
+ * callback for DOMNodeInsertedIntoDocument end type
+ */
+static void
+dom_default_action_DOMNodeInsertedIntoDocument_cb(struct dom_event *evt,
+ void *pw)
+{
+ html_content *htmlc = pw;
+ dom_event_target *node;
+ dom_node_type type;
+ dom_exception exc;
+
+ 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 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_SCRIPT:
+ dom_SCRIPT_showed_up(htmlc, (dom_html_script_element *) node);
+ default:
+ break;
+ }
+ }
+ dom_node_unref(node);
+ }
+}
+
+
+/**
+ * callback for DOMSubtreeModified 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;
+ case DOM_HTML_ELEMENT_TYPE_TEXTAREA:
+ case DOM_HTML_ELEMENT_TYPE_INPUT:
+ html_texty_element_update(htmlc, (dom_node *)node);
+ default:
+ break;
+ }
+ }
+ dom_node_unref(node);
+ }
+}
+
+
+/**
+ * callback for default action finished
+ */
+static void
+dom_default_action_finished_cb(struct dom_event *evt, void *pw)
+{
+ html_content *htmlc = pw;
+
+ if (htmlc->jsthread != NULL)
+ js_event_cleanup(htmlc->jsthread, evt);
+}
+
+
+/* exported interface documented in html/dom_event.c */
+dom_default_action_callback
+html_dom_event_fetcher(dom_string *type,
+ dom_default_action_phase phase,
+ void **pw)
+{
+ NSLOG(netsurf, DEEPDEBUG,
+ "phase:%d type:%s", phase, 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_DOMNodeInsertedIntoDocument)) {
+ return dom_default_action_DOMNodeInsertedIntoDocument_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;
+}