| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "bindings/core/v8/V8HTMLElement.h" |
| |
| #include "bindings/core/v8/DOMWrapperWorld.h" |
| #include "bindings/core/v8/ExceptionState.h" |
| #include "bindings/core/v8/ScriptCustomElementDefinition.h" |
| #include "bindings/core/v8/V8Binding.h" |
| #include "bindings/core/v8/V8BindingMacros.h" |
| #include "bindings/core/v8/V8DOMWrapper.h" |
| #include "bindings/core/v8/V8ThrowException.h" |
| #include "core/dom/Document.h" |
| #include "core/dom/ExceptionCode.h" |
| #include "core/dom/custom/CustomElementsRegistry.h" |
| #include "core/frame/LocalDOMWindow.h" |
| #include "platform/RuntimeEnabledFeatures.h" |
| |
| namespace blink { |
| |
| void V8HTMLElement::constructorCustom( |
| const v8::FunctionCallbackInfo<v8::Value>& info) |
| { |
| DCHECK(info.IsConstructCall()); |
| |
| v8::Isolate* isolate = info.GetIsolate(); |
| ScriptState* scriptState = ScriptState::current(isolate); |
| |
| if (!RuntimeEnabledFeatures::customElementsV1Enabled() |
| || !scriptState->world().isMainWorld()) { |
| V8ThrowException::throwTypeError( |
| info.GetIsolate(), |
| "Illegal constructor"); |
| return; |
| } |
| |
| LocalDOMWindow* window = scriptState->domWindow(); |
| ScriptCustomElementDefinition* definition = |
| ScriptCustomElementDefinition::forConstructor( |
| scriptState, |
| window->customElements(), |
| info.NewTarget()); |
| if (!definition) { |
| V8ThrowException::throwTypeError(isolate, "Illegal constructor"); |
| return; |
| } |
| |
| ExceptionState exceptionState( |
| ExceptionState::ConstructionContext, |
| "HTMLElement", |
| info.Holder(), |
| isolate); |
| |
| Element* element; |
| if (definition->constructionStack().isEmpty()) { |
| // This is an element being created with 'new' from script |
| element = window->document()->createElement( |
| definition->descriptor().localName(), |
| AtomicString(), |
| exceptionState); |
| if (exceptionState.throwIfNeeded()) |
| return; |
| } else if ((element = definition->constructionStack().last())) { |
| // This is an element being upgraded that has called super |
| definition->constructionStack().last().clear(); |
| } else { |
| // During upgrade an element has invoked the same constructor |
| // before calling 'super' and that invocation has poached the |
| // element. |
| exceptionState.throwDOMException( |
| InvalidStateError, |
| "this instance is already constructed"); |
| exceptionState.throwIfNeeded(); |
| return; |
| } |
| const WrapperTypeInfo* wrapperType = element->wrapperTypeInfo(); |
| v8::Local<v8::Object> wrapper = V8DOMWrapper::associateObjectWithWrapper( |
| isolate, |
| element, |
| wrapperType, |
| info.This()); |
| // If the element had a wrapper, we now update and return that |
| // instead. |
| v8SetReturnValue(info, wrapper); |
| |
| v8CallOrCrash(wrapper->SetPrototype( |
| scriptState->context(), |
| definition->prototype())); |
| |
| // TODO(dominicc): These elements should be 'undefined', not |
| // 'uncustomized', on creation. Investigate why some elements are |
| // running around uncustomized. |
| if (element->getCustomElementState() == CustomElementState::Uncustomized) |
| element->setCustomElementState(CustomElementState::Undefined); |
| // TODO(dominicc): Move this to the exactly correct place when |
| // https://github.com/whatwg/html/issues/1297 is closed. |
| element->setCustomElementState(CustomElementState::Custom); |
| } |
| |
| } // namespace blink |