2 * Copyright (C) 2013 Google Inc. All rights reserved.
3 * Copyright (C) 2015 Apple Inc. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
16 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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29 #include "JSCustomElementInterface.h"
31 #if ENABLE(CUSTOM_ELEMENTS)
33 #include "DOMWrapperWorld.h"
34 #include "JSDOMGlobalObject.h"
35 #include "JSElement.h"
36 #include "JSHTMLElement.h"
37 #include "JSMainThreadExecState.h"
38 #include "JSMainThreadExecStateInstrumentation.h"
39 #include "ScriptExecutionContext.h"
40 #include <heap/WeakInlines.h>
41 #include <runtime/JSLock.h>
47 JSCustomElementInterface::JSCustomElementInterface(JSObject* constructor, JSDOMGlobalObject* globalObject)
48 : ActiveDOMCallback(globalObject->scriptExecutionContext())
49 , m_constructor(constructor)
50 , m_isolatedWorld(&globalObject->world())
54 JSCustomElementInterface::~JSCustomElementInterface()
58 RefPtr<Element> JSCustomElementInterface::constructElement(const AtomicString& tagName, ShouldClearException shouldClearException)
60 if (!canInvokeCallback())
63 Ref<JSCustomElementInterface> protect(*this);
65 JSLockHolder lock(m_isolatedWorld->vm());
70 ScriptExecutionContext* context = scriptExecutionContext();
73 ASSERT(context->isDocument());
74 JSDOMGlobalObject* globalObject = toJSDOMGlobalObject(context, *m_isolatedWorld);
75 ExecState* state = globalObject->globalExec();
77 ConstructData constructData;
78 ConstructType constructType = m_constructor->methodTable()->getConstructData(m_constructor.get(), constructData);
79 if (constructType == ConstructTypeNone) {
84 MarkedArgumentBuffer args;
85 args.append(jsStringWithCache(state, tagName));
87 InspectorInstrumentationCookie cookie = JSMainThreadExecState::instrumentFunctionConstruct(context, constructType, constructData);
88 JSValue newElement = construct(state, m_constructor.get(), constructType, constructData, args);
89 InspectorInstrumentation::didCallFunction(cookie, context);
91 if (shouldClearException == ShouldClearException::Clear && state->hadException())
92 state->clearException();
94 if (newElement.isEmpty())
97 Element* wrappedElement = JSElement::toWrapped(newElement);
100 wrappedElement->setIsCustomElement();
101 return wrappedElement;
104 void JSCustomElementInterface::attributeChanged(Element& element, const QualifiedName& attributeName, const AtomicString& oldValue, const AtomicString& newValue)
106 if (!canInvokeCallback())
109 Ref<JSCustomElementInterface> protect(*this);
111 JSLockHolder lock(m_isolatedWorld->vm());
113 ScriptExecutionContext* context = scriptExecutionContext();
117 ASSERT(context->isDocument());
118 JSDOMGlobalObject* globalObject = toJSDOMGlobalObject(context, *m_isolatedWorld);
119 ExecState* state = globalObject->globalExec();
121 JSObject* jsElement = asObject(toJS(state, globalObject, &element));
123 PropertyName attributeChanged(Identifier::fromString(state, "attributeChangedCallback"));
124 JSValue callback = jsElement->get(state, attributeChanged);
126 CallType callType = getCallData(callback, callData);
127 if (callType == CallTypeNone)
130 const AtomicString& namespaceURI = attributeName.namespaceURI();
131 MarkedArgumentBuffer args;
132 args.append(jsStringWithCache(state, attributeName.localName()));
133 args.append(oldValue == nullAtom ? jsNull() : jsStringWithCache(state, oldValue));
134 args.append(newValue == nullAtom ? jsNull() : jsStringWithCache(state, newValue));
135 args.append(namespaceURI == nullAtom ? jsNull() : jsStringWithCache(state, attributeName.namespaceURI()));
137 InspectorInstrumentationCookie cookie = JSMainThreadExecState::instrumentFunctionCall(context, callType, callData);
139 NakedPtr<Exception> exception;
140 JSMainThreadExecState::call(state, callback, callType, callData, jsElement, args, exception);
142 InspectorInstrumentation::didCallFunction(cookie, context);
145 reportException(state, exception);
148 } // namespace WebCore