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[js] innerHTML read property

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This commit is contained in:
Witold Filipczyk 2021-05-03 18:25:31 +02:00
parent 63d892838c
commit 3bd33b9dd3
2 changed files with 129 additions and 0 deletions
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111
src/ecmascript/spidermonkey/element.c
View File

@ -50,6 +50,8 @@ using namespace htmlcxx;
static bool element_get_property_id(JSContext *ctx, unsigned int argc, JS::Value *vp); static bool element_get_property_id(JSContext *ctx, unsigned int argc, JS::Value *vp);
static bool element_set_property_id(JSContext *ctx, unsigned int argc, JS::Value *vp); static bool element_set_property_id(JSContext *ctx, unsigned int argc, JS::Value *vp);
static bool element_get_property_innerHtml(JSContext *ctx, unsigned int argc, JS::Value *vp);
static bool element_set_property_innerHtml(JSContext *ctx, unsigned int argc, JS::Value *vp);
JSClassOps element_ops = { JSClassOps element_ops = {
JS_PropertyStub, nullptr, JS_PropertyStub, nullptr,
@ -65,6 +67,7 @@ JSClass element_class = {
JSPropertySpec element_props[] = { JSPropertySpec element_props[] = {
JS_PSGS("id", element_get_property_id, element_set_property_id, JSPROP_ENUMERATE), JS_PSGS("id", element_get_property_id, element_set_property_id, JSPROP_ENUMERATE),
JS_PSGS("innerHTML", element_get_property_innerHtml, element_set_property_innerHtml, JSPROP_ENUMERATE),
JS_PS_END JS_PS_END
}; };
@ -111,6 +114,85 @@ element_get_property_id(JSContext *ctx, unsigned int argc, JS::Value *vp)
return true; return true;
} }
static int was_el = 0;
static void
walk_tree(struct string *buf, tree<HTML::Node> const &dom, const unsigned int offset)
{
int local = 0;
tree<HTML::Node>::iterator it = dom.begin();
if (was_el) add_to_string(buf, it->text().c_str());
if (!was_el && it->isTag()) {
if (it->offset() == offset) {
was_el = 1;
local = 1;
}
}
for (tree<HTML::Node>::sibling_iterator childIt = dom.begin(it); childIt != dom.end(it); ++childIt)
{
walk_tree(buf, childIt, offset);
}
if (was_el) {
if (!local) {
add_to_string(buf, it->closingText().c_str());
} else {
was_el = 0;
}
}
}
static bool
element_get_property_innerHtml(JSContext *ctx, unsigned int argc, JS::Value *vp)
{
JS::CallArgs args = CallArgsFromVp(argc, vp);
JS::RootedObject hobj(ctx, &args.thisv().toObject());
struct view_state *vs;
JSCompartment *comp = js::GetContextCompartment(ctx);
if (!comp) {
return false;
}
struct ecmascript_interpreter *interpreter = JS_GetCompartmentPrivate(comp);
/* This can be called if @obj if not itself an instance of the
* appropriate class but has one in its prototype chain. Fail
* such calls. */
if (!JS_InstanceOf(ctx, hobj, &element_class, NULL))
return false;
vs = interpreter->vs;
if (!vs) {
return false;
}
tree<HTML::Node> *el = JS_GetPrivate(hobj);
if (!el) {
args.rval().setNull();
return true;
}
struct document_view *doc_view = vs->doc_view;
struct document *document = doc_view->document;
tree<HTML::Node> *dom = document->dom;
struct string buf;
init_string(&buf);
was_el = 0;
walk_tree(&buf, *dom, el->begin()->offset());
args.rval().setString(JS_NewStringCopyZ(ctx, buf.source));
done_string(&buf);
return true;
}
static bool static bool
element_set_property_id(JSContext *ctx, unsigned int argc, JS::Value *vp) element_set_property_id(JSContext *ctx, unsigned int argc, JS::Value *vp)
{ {
@ -139,6 +221,35 @@ element_set_property_id(JSContext *ctx, unsigned int argc, JS::Value *vp)
return true; return true;
} }
static bool
element_set_property_innerHtml(JSContext *ctx, unsigned int argc, JS::Value *vp)
{
JS::CallArgs args = CallArgsFromVp(argc, vp);
JS::RootedObject hobj(ctx, &args.thisv().toObject());
JSCompartment *comp = js::GetContextCompartment(ctx);
if (!comp) {
return false;
}
struct ecmascript_interpreter *interpreter = JS_GetCompartmentPrivate(comp);
/* This can be called if @obj if not itself an instance of the
* appropriate class but has one in its prototype chain. Fail
* such calls. */
if (!JS_InstanceOf(ctx, hobj, &element_class, NULL))
return false;
struct view_state *vs = interpreter->vs;
if (!vs) {
return true;
}
return true;
}
JSObject * JSObject *
getElement(JSContext *ctx, void *node) getElement(JSContext *ctx, void *node)
{ {

18
test/ecmascript/inner.html Normal file
View File

@ -0,0 +1,18 @@
<html>
<body>
<a href="/home">BBB</a>
<b id="aaaa">bbb</b>
<a id="blabla" href="/">
<b>AAA</b><u id="ble">UUU</u>AAAAAAA
</a>
<a id="bb" href="/">BB</a>
<script>
function aa()
{
// alert(document.getElementById('blabla').innerHTML);
alert(document.getElementById('ble').innerHTML);
}
</script>
<button onclick="return aa()">Click me!</button>
</body>
</html>