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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "config.h" |
| 6 #include "bindings/core/v8/V8PerformanceObserver.h" |
| 7 |
| 8 #include "bindings/core/v8/ExceptionMessages.h" |
| 9 #include "bindings/core/v8/ExceptionState.h" |
| 10 #include "bindings/core/v8/V8Binding.h" |
| 11 #include "bindings/core/v8/V8DOMWrapper.h" |
| 12 #include "bindings/core/v8/V8GCController.h" |
| 13 #include "bindings/core/v8/V8Performance.h" |
| 14 #include "bindings/core/v8/V8PerformanceObserverCallback.h" |
| 15 #include "core/timing/DOMWindowPerformance.h" |
| 16 #include "core/timing/PerformanceObserver.h" |
| 17 |
| 18 namespace blink { |
| 19 |
| 20 void V8PerformanceObserver::constructorCustom(const v8::FunctionCallbackInfo<v8:
:Value>& info) |
| 21 { |
| 22 if (UNLIKELY(info.Length() < 1)) { |
| 23 V8ThrowException::throwException(createMinimumArityTypeErrorForMethod(in
fo.GetIsolate(), "createPerformanceObserver", "Performance", 1, info.Length()),
info.GetIsolate()); |
| 24 return; |
| 25 } |
| 26 |
| 27 v8::Local<v8::Object> wrapper = info.Holder(); |
| 28 |
| 29 Performance* performance = nullptr; |
| 30 DOMWindow* window = toDOMWindow(wrapper->CreationContext()); |
| 31 if (window) |
| 32 performance = DOMWindowPerformance::performance(*window); |
| 33 |
| 34 PerformanceObserverCallback* callback; |
| 35 { |
| 36 if (info.Length() <= 0 || !info[0]->IsFunction()) { |
| 37 V8ThrowException::throwTypeError(info.GetIsolate(), ExceptionMessage
s::failedToExecute("createPerformanceObserver", "Performance", "The callback pro
vided as parameter 1 is not a function.")); |
| 38 return; |
| 39 } |
| 40 callback = V8PerformanceObserverCallback::create(v8::Local<v8::Function>
::Cast(info[0]), ScriptState::current(info.GetIsolate())); |
| 41 } |
| 42 PerformanceObserver* observer = PerformanceObserver::create(performance, cal
lback); |
| 43 |
| 44 v8SetReturnValue(info, V8DOMWrapper::associateObjectWithWrapper(info.GetIsol
ate(), observer, &wrapperTypeInfo, wrapper)); |
| 45 } |
| 46 |
| 47 } // namespace blink |
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