Implement PaymentRequestUpdateEvent

third_party/WebKit/Source/modules/payments/PaymentRequestUpdateEvent.cpp

+// 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 "modules/payments/PaymentRequestUpdateEvent.h"
+
+#include "bindings/core/v8/ExceptionState.h"
+#include "bindings/core/v8/ScriptFunction.h"
+#include "core/dom/DOMException.h"
+#include "core/dom/ExceptionCode.h"
+#include "modules/payments/PaymentUpdater.h"
+
+namespace blink {
+namespace {
+
+    class UpdatePaymentDetailsFunction : public ScriptFunction {
+    public:
+        static v8::Local<v8::Function> createFunction(ScriptState* scriptState, PaymentUpdater* updater)
+        {
+            UpdatePaymentDetailsFunction* self = new UpdatePaymentDetailsFunction(scriptState, updater);
+            return self->bindToV8Function();
+        }
+
+        DEFINE_INLINE_VIRTUAL_TRACE()
+        {
+            visitor->trace(m_updater);
+            ScriptFunction::trace(visitor);
+        }
+
+    private:
+        UpdatePaymentDetailsFunction(ScriptState* scriptState, PaymentUpdater* updater)
+            : ScriptFunction(scriptState)
+            , m_updater(updater)
+        {
+            DCHECK(m_updater);
+        }
+
+        ScriptValue call(ScriptValue value) override
+        {
+            m_updater->onUpdatePaymentDetails(value);
+            return ScriptValue();
+        }
+
+        Member<PaymentUpdater> m_updater;
+    };
+
+    class UpdatePaymentDetailsErrorFunction : public ScriptFunction {
+    public:
+        static v8::Local<v8::Function> createFunction(ScriptState* scriptState, PaymentUpdater* updater)
+        {
+            UpdatePaymentDetailsErrorFunction* self = new UpdatePaymentDetailsErrorFunction(scriptState, updater);
+            return self->bindToV8Function();
+        }
+
+        DEFINE_INLINE_VIRTUAL_TRACE()
+        {
+            visitor->trace(m_updater);
+            ScriptFunction::trace(visitor);
+        }
+
+    private:
+        UpdatePaymentDetailsErrorFunction(ScriptState* scriptState, PaymentUpdater* updater)
+            : ScriptFunction(scriptState)
+            , m_updater(updater)
+        {
+            DCHECK(m_updater);
+        }
+
+        ScriptValue call(ScriptValue value) override
+        {
+            m_updater->onUpdatePaymentDetailsFailure(value);
+            return ScriptValue();
+        }
+
+        Member<PaymentUpdater> m_updater;
+    };
+
+} // namespace
+
+PaymentRequestUpdateEvent::~PaymentRequestUpdateEvent()
+{
+}
+
+PaymentRequestUpdateEvent* PaymentRequestUpdateEvent::create()
+{
+    return new PaymentRequestUpdateEvent();
+}
+
+PaymentRequestUpdateEvent* PaymentRequestUpdateEvent::create(const AtomicString& type, const PaymentRequestUpdateEventInit& init)
+{
+    return new PaymentRequestUpdateEvent(type, init);
+}
+
+void PaymentRequestUpdateEvent::setPaymentDetailsUpdater(PaymentUpdater* updater)
+{
+    m_updater = updater;
+}
+
+void PaymentRequestUpdateEvent::updateWith(ScriptState* scriptState, ScriptPromise promise, ExceptionState& exceptionState)
+{
+    DCHECK(m_updater);

[Marijn Kruisselbrink, 2016/05/03 22:28:51]

This can't just be a DCHECK, you need to actually handle m_updater being null (a
javascript created PaymentRequestUpdateEvent won't have an updater set).

[please use gerrit instead, 2016/05/05 04:57:48]

Done.

+
+    if (!isBeingDispatched()) {
+        exceptionState.throwDOMException(InvalidStateError, "Cannot update details when the event is not being dispatched");
+        return;
+    }
+
+    if (m_waitForUpdate) {
+        exceptionState.throwDOMException(InvalidStateError, "Cannot update details twice");
+        return;
+    }
+
+    stopPropagation();

[Marijn Kruisselbrink, 2016/05/03 22:28:51]

I think calling just stopImmediatePropagation() is enough, as in blink that
implies also stopPropagation.

[please use gerrit instead, 2016/05/05 04:57:48]

Done.

+    stopImmediatePropagation();
+    m_waitForUpdate = true;
+
+    promise.then(UpdatePaymentDetailsFunction::createFunction(scriptState, m_updater),
+        UpdatePaymentDetailsErrorFunction::createFunction(scriptState, m_updater));
+}
+
+DEFINE_TRACE(PaymentRequestUpdateEvent)
+{
+    visitor->trace(m_updater);
+    Event::trace(visitor);
+}
+
+PaymentRequestUpdateEvent::PaymentRequestUpdateEvent()
+    : m_waitForUpdate(false)
+{
+}
+
+PaymentRequestUpdateEvent::PaymentRequestUpdateEvent(const AtomicString& type, const PaymentRequestUpdateEventInit& init)
+    : Event(type, init)
+    , m_waitForUpdate(false)
+{
+}
+
+} // namespace blink