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[js] element.childNodes
This commit is contained in:
Witold Filipczyk
parent
70a9e53a36
commit
e674a7c9d1
@ -59,6 +59,7 @@
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static bool element_get_property_attributes(JSContext *ctx, unsigned int argc, JS::Value *vp);
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static bool element_get_property_children(JSContext *ctx, unsigned int argc, JS::Value *vp);
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static bool element_get_property_childElementCount(JSContext *ctx, unsigned int argc, JS::Value *vp);
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static bool element_get_property_childNodes(JSContext *ctx, unsigned int argc, JS::Value *vp);
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static bool element_get_property_className(JSContext *ctx, unsigned int argc, JS::Value *vp);
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static bool element_set_property_className(JSContext *ctx, unsigned int argc, JS::Value *vp);
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static bool element_get_property_dir(JSContext *ctx, unsigned int argc, JS::Value *vp);
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@ -108,6 +109,7 @@ JSPropertySpec element_props[] = {
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JS_PSG("attributes", element_get_property_attributes, JSPROP_ENUMERATE),
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JS_PSG("children", element_get_property_children, JSPROP_ENUMERATE),
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JS_PSG("childElementCount", element_get_property_childElementCount, JSPROP_ENUMERATE),
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JS_PSG("childNodes", element_get_property_childNodes, JSPROP_ENUMERATE),
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JS_PSGS("className", element_get_property_className, element_set_property_className, JSPROP_ENUMERATE),
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JS_PSGS("dir", element_get_property_dir, element_set_property_dir, JSPROP_ENUMERATE),
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JS_PSG("firstChild", element_get_property_firstChild, JSPROP_ENUMERATE),
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@ -283,6 +285,54 @@ element_get_property_childElementCount(JSContext *ctx, unsigned int argc, JS::Va
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return true;
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}
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static bool
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element_get_property_childNodes(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, &element_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::Element *el = JS_GetPrivate(hobj);
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if (!el) {
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args.rval().setNull();
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return true;
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}
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xmlpp::Node::NodeList *nodes = new xmlpp::Node::NodeList;
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*nodes = el->get_children();
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if (nodes->empty()) {
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delete nodes;
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args.rval().setNull();
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return true;
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}
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JSObject *elem = getNodeList(ctx, nodes);
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args.rval().setObject(*elem);
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return true;
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}
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static bool
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element_get_property_className(JSContext *ctx, unsigned int argc, JS::Value *vp)
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{
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@ -728,12 +778,13 @@ element_get_property_nodeName(JSContext *ctx, unsigned int argc, JS::Value *vp)
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xmlpp::Node *node = JS_GetPrivate(hobj);
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std::string v;
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if (!node) {
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args.rval().setNull();
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args.rval().setString(JS_NewStringCopyZ(ctx, v.c_str()));
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return true;
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}
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std::string v;
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auto el = dynamic_cast<const xmlpp::Element*>(node);
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if (el) {
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@ -2472,6 +2523,180 @@ getCollection(JSContext *ctx, void *node)
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return el;
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}
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static bool nodeList_item(JSContext *ctx, unsigned int argc, JS::Value *rval);
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static bool nodeList_get_property(JSContext *ctx, JS::HandleObject hobj, JS::HandleId hid, JS::MutableHandleValue hvp);
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static bool nodeList_item2(JSContext *ctx, JS::HandleObject hobj, int index, JS::MutableHandleValue hvp);
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JSClassOps nodeList_ops = {
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JS_PropertyStub, nullptr,
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nodeList_get_property, JS_StrictPropertyStub,
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nullptr, nullptr, nullptr, nullptr
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};
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JSClass nodeList_class = {
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"nodeList",
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JSCLASS_HAS_PRIVATE,
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&nodeList_ops
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};
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static const spidermonkeyFunctionSpec nodeList_funcs[] = {
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{ "item", nodeList_item, 1 },
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{ NULL }
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};
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static bool nodeList_get_property_length(JSContext *ctx, unsigned int argc, JS::Value *vp);
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static JSPropertySpec nodeList_props[] = {
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JS_PSG("length", nodeList_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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nodeList_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, &nodeList_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::NodeList *nl = JS_GetPrivate(hobj);
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if (!nl) {
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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(nl->size());
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return true;
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}
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static bool
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nodeList_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 = nodeList_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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nodeList_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, &nodeList_class, NULL)) return false;
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hvp.setUndefined();
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xmlpp::Node::NodeList *nl = JS_GetPrivate(hobj);
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if (!nl) {
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return true;
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}
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xmlpp::Element *element = nullptr;
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auto it = nl->begin();
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auto end = nl->end();
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for (int i = 0; it != end; ++it, ++i) {
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if (i == index) {
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element = *it;
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break;
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}
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}
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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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nodeList_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, &nodeList_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 nodeList_item2(ctx, hobj, index, hvp);
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}
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return JS_PropertyStub(ctx, hobj, hid, hvp);
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}
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JSObject *
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getNodeList(JSContext *ctx, void *node)
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{
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JSObject *el = JS_NewObject(ctx, &nodeList_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 *) nodeList_props);
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spidermonkey_DefineFunctions(ctx, el, nodeList_funcs);
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JS_SetPrivate(el, node);
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return el;
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}
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static bool attributes_item(JSContext *ctx, unsigned int argc, JS::Value *rval);
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static bool attributes_getNamedItem(JSContext *ctx, unsigned int argc, JS::Value *rval);
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static bool attributes_get_property(JSContext *ctx, JS::HandleObject hobj, JS::HandleId hid, JS::MutableHandleValue hvp);
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@ -13,5 +13,6 @@ JSObject *getElement(JSContext *ctx, void *node);
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JSObject *getCollection(JSContext *ctx, void *node);
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JSObject *getAttributes(JSContext *ctx, void *node);
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JSObject *getAttr(JSContext *ctx, void *node);
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JSObject *getNodeList(JSContext *ctx, void *node);
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#endif
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29
test/ecmascript/childNodes.html
Normal file
29
test/ecmascript/childNodes.html
Normal file
@ -0,0 +1,29 @@
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<!DOCTYPE html>
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<html>
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<body><!-- This is a comment node! -->
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<p>Click the button get info about the body element's child nodes.</p>
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<button onclick="myFunction()">Try it</button>
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<p><strong>Note:</strong> Whitespace inside elements is considered as text, and text
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is considered as nodes. Comments are also considered as nodes.</p>
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<p id="demo"></p>
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<script>
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function myFunction() {
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var c = document.body.childNodes;
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var txt = "";
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var i;
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for (i = 0; i < c.length; i++) {
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txt = txt + c[i].nodeName + "<br/>";
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}
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document.getElementById("demo").innerHTML = txt;
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}
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</script>
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</body>
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</html>
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