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[js] jsGetElementsByName
This commit is contained in:
Witold Filipczyk
parent
a8e27fc730
commit
3e30d82fb4
@ -463,12 +463,14 @@ static bool document_write(JSContext *ctx, unsigned int argc, JS::Value *rval);
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static bool document_writeln(JSContext *ctx, unsigned int argc, JS::Value *rval);
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static bool document_replace(JSContext *ctx, unsigned int argc, JS::Value *rval);
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static bool document_getElementById(JSContext *ctx, unsigned int argc, JS::Value *rval);
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static bool document_getElementByName(JSContext *ctx, unsigned int argc, JS::Value *rval);
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const spidermonkeyFunctionSpec document_funcs[] = {
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{ "write", document_write, 1 },
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{ "writeln", document_writeln, 1 },
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{ "replace", document_replace, 1 },
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{ "getElementById", document_getElementById, 1 },
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{ "getElementsByName", document_getElementByName, 1 },
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{ NULL }
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};
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@ -709,7 +711,6 @@ document_parse(struct document *document)
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return (void *)root;
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}
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static bool
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document_getElementById(JSContext *ctx, unsigned int argc, JS::Value *vp)
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{
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@ -766,3 +767,63 @@ document_getElementById(JSContext *ctx, unsigned int argc, JS::Value *vp)
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return true;
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}
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static bool
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document_getElementByName(JSContext *ctx, unsigned int argc, JS::Value *vp)
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{
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JS::CallArgs args = CallArgsFromVp(argc, vp);
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if (argc != 1) {
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args.rval().setBoolean(false);
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return true;
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}
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JSCompartment *comp = js::GetContextCompartment(ctx);
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struct ecmascript_interpreter *interpreter = JS_GetCompartmentPrivate(comp);
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struct document_view *doc_view = interpreter->vs->doc_view;
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struct document *document = doc_view->document;
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if (!document->dom) {
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document->dom = document_parse(document);
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}
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if (!document->dom) {
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args.rval().setNull();
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return true;
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}
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xmlpp::Element* root = (xmlpp::Element *)document->dom;
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struct string idstr;
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init_string(&idstr);
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jshandle_value_to_char_string(&idstr, ctx, &args[0]);
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std::string id = idstr.source;
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std::string xpath = "//*[@id=\"";
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xpath += id;
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xpath += "\"]|//*[@name=\"";
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xpath += id;
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xpath += "\"]";
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done_string(&idstr);
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xmlpp::Node::NodeSet *elements = new xmlpp::Node::NodeSet;
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*elements = root->find(xpath);
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if (elements->size() == 0) {
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args.rval().setNull();
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return true;
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}
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JSObject *elem = getCollection(ctx, elements);
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if (elem) {
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args.rval().setObject(*elem);
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} else {
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args.rval().setNull();
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}
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return true;
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}
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@ -584,7 +584,6 @@ element_get_property_title(JSContext *ctx, unsigned int argc, JS::Value *vp)
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return true;
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}
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static int was_el = 0;
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static void
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@ -1102,3 +1101,245 @@ getElement(JSContext *ctx, void *node)
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return el;
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}
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static bool htmlCollection_item(JSContext *ctx, unsigned int argc, JS::Value *rval);
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static bool htmlCollection_namedItem(JSContext *ctx, unsigned int argc, JS::Value *rval);
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static bool htmlCollection_get_property(JSContext *ctx, JS::HandleObject hobj, JS::HandleId hid, JS::MutableHandleValue hvp);
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static bool htmlCollection_item2(JSContext *ctx, JS::HandleObject hobj, int index, JS::MutableHandleValue hvp);
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static bool htmlCollection_namedItem2(JSContext *ctx, JS::HandleObject hobj, char *str, JS::MutableHandleValue hvp);
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JSClassOps htmlCollection_ops = {
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JS_PropertyStub, nullptr,
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htmlCollection_get_property, JS_StrictPropertyStub,
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nullptr, nullptr, nullptr, nullptr
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};
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JSClass htmlCollection_class = {
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"htmlCollection",
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JSCLASS_HAS_PRIVATE,
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&htmlCollection_ops
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};
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static const spidermonkeyFunctionSpec htmlCollection_funcs[] = {
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{ "item", htmlCollection_item, 1 },
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{ "namedItem", htmlCollection_namedItem, 1 },
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{ NULL }
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};
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static bool htmlCollection_get_property_length(JSContext *ctx, unsigned int argc, JS::Value *vp);
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static JSPropertySpec htmlCollection_props[] = {
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JS_PSG("length", htmlCollection_get_property_length, JSPROP_ENUMERATE),
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JS_PS_END
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};
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static bool
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htmlCollection_get_property_length(JSContext *ctx, unsigned int argc, JS::Value *vp)
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{
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JS::CallArgs args = CallArgsFromVp(argc, vp);
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JS::RootedObject hobj(ctx, &args.thisv().toObject());
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struct view_state *vs;
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JSCompartment *comp = js::GetContextCompartment(ctx);
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if (!comp) {
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return false;
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}
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struct ecmascript_interpreter *interpreter = JS_GetCompartmentPrivate(comp);
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/* This can be called if @obj if not itself an instance of the
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* appropriate class but has one in its prototype chain. Fail
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* such calls. */
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if (!JS_InstanceOf(ctx, hobj, &htmlCollection_class, NULL))
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return false;
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vs = interpreter->vs;
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if (!vs) {
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return false;
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}
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xmlpp::Node::NodeSet *ns = JS_GetPrivate(hobj);
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if (!ns) {
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args.rval().setInt32(0);
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return true;
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}
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args.rval().setInt32(ns->size());
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return true;
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}
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static bool
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htmlCollection_item(JSContext *ctx, unsigned int argc, JS::Value *vp)
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{
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JS::Value val;
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JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
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JS::RootedObject hobj(ctx, &args.thisv().toObject());
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JS::RootedValue rval(ctx, val);
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int index = args[0].toInt32();
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bool ret = htmlCollection_item2(ctx, hobj, index, &rval);
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args.rval().set(rval);
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return ret;
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}
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static bool
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htmlCollection_namedItem(JSContext *ctx, unsigned int argc, JS::Value *vp)
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{
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JS::Value val;
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JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
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JS::RootedObject hobj(ctx, &args.thisv().toObject());
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JS::RootedValue rval(ctx, val);
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char *str = JS_EncodeString(ctx, args[0].toString());
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bool ret = htmlCollection_namedItem2(ctx, hobj, str, &rval);
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args.rval().set(rval);
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return ret;
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}
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static bool
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htmlCollection_item2(JSContext *ctx, JS::HandleObject hobj, int index, JS::MutableHandleValue hvp)
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{
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JSCompartment *comp = js::GetContextCompartment(ctx);
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if (!comp) {
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return false;
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}
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struct ecmascript_interpreter *interpreter = JS_GetCompartmentPrivate(comp);
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if (!JS_InstanceOf(ctx, hobj, &htmlCollection_class, NULL)) return false;
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hvp.setUndefined();
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xmlpp::Node::NodeSet *ns = JS_GetPrivate(hobj);
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if (!ns) {
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return true;
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}
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xmlpp::Element *element;
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try {
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element = ns->at(index);
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} catch (std::out_of_range e) { return true;}
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if (!element) {
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return true;
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}
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JSObject *obj = getElement(ctx, element);
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hvp.setObject(*obj);
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return true;
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}
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static bool
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htmlCollection_namedItem2(JSContext *ctx, JS::HandleObject hobj, char *str, JS::MutableHandleValue hvp)
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{
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JSCompartment *comp = js::GetContextCompartment(ctx);
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if (!comp) {
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return false;
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}
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struct ecmascript_interpreter *interpreter = JS_GetCompartmentPrivate(comp);
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if (!JS_InstanceOf(ctx, hobj, &htmlCollection_class, NULL))
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return false;
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xmlpp::Node::NodeSet *ns = JS_GetPrivate(hobj);
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hvp.setUndefined();
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if (!ns) {
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return true;
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}
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std::string name = str;
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auto it = ns->begin();
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auto end = ns->end();
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for (; it != end; ++it) {
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const auto element = dynamic_cast<const xmlpp::Element*>(*it);
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if (!element) {
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continue;
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}
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if (name == element->get_attribute_value("id")
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|| name == element->get_attribute_value("name")) {
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JSObject *obj = getElement(ctx, element);
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hvp.setObject(*obj);
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return true;
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}
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}
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return true;
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}
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static bool
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htmlCollection_get_property(JSContext *ctx, JS::HandleObject hobj, JS::HandleId hid, JS::MutableHandleValue hvp)
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{
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jsid id = hid.get();
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struct view_state *vs;
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JS::Value idval;
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JSCompartment *comp = js::GetContextCompartment(ctx);
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if (!comp) {
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return false;
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}
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struct ecmascript_interpreter *interpreter = JS_GetCompartmentPrivate(comp);
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/* This can be called if @obj if not itself an instance of the
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* appropriate class but has one in its prototype chain. Fail
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* such calls. */
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if (!JS_InstanceOf(ctx, hobj, &htmlCollection_class, NULL)) {
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return false;
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}
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if (JSID_IS_INT(id)) {
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JS::RootedValue r_idval(ctx, idval);
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JS_IdToValue(ctx, id, &r_idval);
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int index = r_idval.toInt32();
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return htmlCollection_item2(ctx, hobj, index, hvp);
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}
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#if 0
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if (JSID_IS_STRING(id)) {
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JS::RootedValue r_idval(ctx, idval);
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JS_IdToValue(ctx, id, &r_idval);
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char *string = JS_EncodeString(ctx, r_idval.toString());
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return htmlCollection_namedItem2(ctx, hobj, string, hvp);
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}
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#endif
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return JS_PropertyStub(ctx, hobj, hid, hvp);
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}
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JSObject *
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getCollection(JSContext *ctx, void *node)
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{
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JSObject *el = JS_NewObject(ctx, &htmlCollection_class);
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if (!el) {
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return NULL;
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}
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JS::RootedObject r_el(ctx, el);
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JS_DefineProperties(ctx, r_el, (JSPropertySpec *) htmlCollection_props);
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spidermonkey_DefineFunctions(ctx, el, htmlCollection_funcs);
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JS_SetPrivate(el, node);
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return el;
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}
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@ -10,5 +10,6 @@ extern JSClass element_class;
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extern JSPropertySpec element_props[];
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JSObject *getElement(JSContext *ctx, void *node);
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JSObject *getCollection(JSContext *ctx, void *node);
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#endif
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22
test/ecmascript/getElementsByName.html
Normal file
22
test/ecmascript/getElementsByName.html
Normal file
@ -0,0 +1,22 @@
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<!DOCTYPE html>
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<html>
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<body>
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First Name: <input name="fname" type="text" value="Michael"><br>
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First Name: <input name="fname" type="text" value="Doug">
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<p>Click the button to get the tag name of the first element in the document that has a name attribute with the value "fname".</p>
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<button onclick="myFunction()">Try it</button>
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<p id="demo"></p>
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<script>
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function myFunction() {
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var x = document.getElementsByName("fname").item(1).outerHTML;
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alert(x);
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}
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</script>
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</body>
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</html>
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