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Element: support innerHTML

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To get us further along the JavaScript pathway, support the
getter and setter for innerHTML.  The getter always returns
an empty string for now, but the setter works.

Signed-off-by: Daniel Silverstone <dsilvers@digital-scurf.org>
This commit is contained in:
Daniel Silverstone 2020-02-21 18:02:57 +00:00
parent 310247ef82
commit 2325062ff1
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GPG Key ID: C30DF439F2987D74
1 changed files with 123 additions and 0 deletions
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123
content/handlers/javascript/duktape/Element.bnd
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@ -11,6 +11,7 @@
class Element { class Element {
prologue %{ prologue %{
#include <utils/corestrings.h> #include <utils/corestrings.h>
#include <dom/bindings/hubbub/parser.h>
%}; %};
}; };
@ -391,3 +392,125 @@ setter Element::className ()
return 0; return 0;
%} %}
getter Element::innerHTML()
%{
duk_push_lstring(ctx, "", 0);
return 1;
%}
setter Element::innerHTML()
%{
duk_size_t size;
const char *s = duk_safe_to_lstring(ctx, 0, &size);
dom_hubbub_parser_params parse_params;
dom_hubbub_error error;
dom_hubbub_parser *parser = NULL;
struct dom_document *doc = NULL;
struct dom_document_fragment *fragment = NULL;
dom_exception exc;
struct dom_node *child = NULL, *html = NULL, *body = NULL;
struct dom_nodelist *bodies = NULL;
exc = dom_node_get_owner_document(priv->parent.node, &doc);
if (exc != DOM_NO_ERR) goto out;
parse_params.enc = "UTF-8";
parse_params.fix_enc = true;
parse_params.enable_script = false;
parse_params.msg = NULL;
parse_params.script = NULL;
parse_params.ctx = NULL;
parse_params.daf = NULL;
error = dom_hubbub_fragment_parser_create(&parse_params,
doc,
&parser,
&fragment);
if (error != DOM_HUBBUB_OK) {
NSLOG(netsurf, ERROR, "Unable to create fragment parser!");
goto out;
}
error = dom_hubbub_parser_parse_chunk(parser, (const uint8_t*)s, size);
if (error != DOM_HUBBUB_OK) {
NSLOG(netsurf, ERROR, "Unable to parse HTML chunk");
goto out;
}
error = dom_hubbub_parser_completed(parser);
if (error != DOM_HUBBUB_OK) {
NSLOG(netsurf, ERROR, "Unable to complete parser");
goto out;
}
/* Parse is finished, transfer contents of fragment into node */
/* 1. empty this node */
exc = dom_node_get_first_child(priv->parent.node, &child);
if (exc != DOM_NO_ERR) goto out;
while (child != NULL) {
struct dom_node *cref;
exc = dom_node_remove_child(priv->parent.node, child, &cref);
if (exc != DOM_NO_ERR) goto out;
dom_node_unref(child);
child = NULL;
dom_node_unref(cref);
exc = dom_node_get_first_child(priv->parent.node, &child);
if (exc != DOM_NO_ERR) goto out;
}
/* 2. the first child in the fragment will be an HTML element
* because that's how hubbub works, walk through that to the body
* element hubbub will have created, we want to migrate that element's
* children into ourself.
*/
exc = dom_node_get_first_child(fragment, &html);
if (exc != DOM_NO_ERR) goto out;
/* We can then ask that HTML element to give us its body */
exc = dom_element_get_elements_by_tag_name(html, corestring_dom_BODY, &bodies);
if (exc != DOM_NO_ERR) goto out;
/* And now we can get the body which will be the zeroth body */
exc = dom_nodelist_item(bodies, 0, &body);
if (exc != DOM_NO_ERR) goto out;
/* 3. Migrate the children */
exc = dom_node_get_first_child(body, &child);
if (exc != DOM_NO_ERR) goto out;
while (child != NULL) {
struct dom_node *cref;
exc = dom_node_remove_child(body, child, &cref);
if (exc != DOM_NO_ERR) goto out;
dom_node_unref(cref);
exc = dom_node_append_child(priv->parent.node, child, &cref);
if (exc != DOM_NO_ERR) goto out;
dom_node_unref(cref);
dom_node_unref(child);
child = NULL;
exc = dom_node_get_first_child(body, &child);
if (exc != DOM_NO_ERR) goto out;
}
out:
if (parser != NULL) {
dom_hubbub_parser_destroy(parser);
}
if (doc != NULL) {
dom_node_unref(doc);
}
if (fragment != NULL) {
dom_node_unref(fragment);
}
if (child != NULL) {
dom_node_unref(child);
}
if (html != NULL) {
dom_node_unref(html);
}
if (bodies != NULL) {
dom_nodelist_unref(bodies);
}
if (body != NULL) {
dom_node_unref(body);
}
return 0;
%}