WebCrypto: Add interfaces for importKey().

Source/modules/crypto/KeyOperation.cpp

Index: Source/modules/crypto/KeyOperation.cpp
diff --git a/Source/modules/crypto/KeyOperation.cpp b/Source/modules/crypto/KeyOperation.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..4fe92e806fa7ebfe0d7412fcfc2d04cdf63d7e65
--- /dev/null
+++ b/Source/modules/crypto/KeyOperation.cpp
@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2013 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "modules/crypto/KeyOperation.h"
+
+#include "V8Key.h" // NOTE: This must appear before ScriptPromiseResolver to define toV8()
+#include "bindings/v8/ExceptionState.h"
+#include "bindings/v8/ScriptPromiseResolver.h"
+#include "core/dom/ExceptionCode.h"
+#include "modules/crypto/Key.h"
+
+namespace WebCore {
+
+PassRefPtr<KeyOperation> KeyOperation::create()
+{
+    return adoptRef(new KeyOperation);
+}
+
+KeyOperation::KeyOperation()
+    : m_state(Initializing)
+    , m_impl(0)
+    , m_initializationError(0)
+{
+}
+
+KeyOperation::~KeyOperation()
+{
+    ASSERT(!m_impl);
+}
+
+void KeyOperation::initializationFailed()
+{
+    ASSERT(m_state == Initializing);
+    ASSERT(!m_impl);
+
+    m_initializationError = NotSupportedError;
+    m_state = Done;
+}
+
+void KeyOperation::initializationSucceeded(WebKit::WebCryptoKeyOperation* operationImpl)
+{
+    ASSERT(m_state == Initializing);
+    ASSERT(operationImpl);
+    ASSERT(!m_impl);
+
+    m_impl = operationImpl;
+    m_state = InProgress;
+}
+
+void KeyOperation::completeWithError()
+{
+    ASSERT(m_state == Initializing || m_state == InProgress);
+
+    m_impl = 0;
+    m_state = Done;
+
+    promiseResolver()->reject(ScriptValue::createNull());
+}
+
+void KeyOperation::completeWithKey(const WebKit::WebCryptoKey& key)
+{
+    ASSERT(m_state == Initializing || m_state == InProgress);
+
+    m_impl = 0;
+    m_state = Done;
+
+    promiseResolver()->fulfill(Key::create(key));
+}
+
+void KeyOperation::ref()
+{
+    ThreadSafeRefCounted<KeyOperation>::ref();
+}
+
+void KeyOperation::deref()
+{
+    ThreadSafeRefCounted<KeyOperation>::deref();
+}
+
+ScriptObject KeyOperation::returnValue(ExceptionState& es)
+{
+    ASSERT(m_state != Initializing);
+
+    if (m_initializationError) {
+        es.throwDOMException(m_initializationError);
+        return ScriptObject();
+    }
+
+    return promiseResolver()->promise();
+}
+
+ScriptPromiseResolver* KeyOperation::promiseResolver()
+{
+    if (!m_promiseResolver)
+        m_promiseResolver = ScriptPromiseResolver::create();
+    return m_promiseResolver.get();
+}
+
+} // namespace WebCore