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* Copyright (C) 2010 Apple Inc. All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef GenericCallback_h
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#define GenericCallback_h
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#include "ShareableBitmap.h"
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#include "WKAPICast.h"
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#include <wtf/HashMap.h>
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#include <wtf/PassRefPtr.h>
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#include <wtf/RefCounted.h>
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class CallbackBase : public RefCounted<CallbackBase> {
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virtual ~CallbackBase()
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uint64_t callbackID() const { return m_callbackID; }
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explicit CallbackBase(void* context)
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, m_callbackID(generateCallbackID())
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void* context() const { return m_context; }
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static uint64_t generateCallbackID()
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static uint64_t uniqueCallbackID = 1;
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return uniqueCallbackID++;
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uint64_t m_callbackID;
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class VoidCallback : public CallbackBase {
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typedef void (*CallbackFunction)(WKErrorRef, void*);
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static PassRefPtr<VoidCallback> create(void* context, CallbackFunction callback)
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return adoptRef(new VoidCallback(context, callback));
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virtual ~VoidCallback()
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void performCallback()
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m_callback(0, context());
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RefPtr<WebError> error = WebError::create();
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m_callback(toAPI(error.get()), context());
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VoidCallback(void* context, CallbackFunction callback)
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: CallbackBase(context)
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, m_callback(callback)
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CallbackFunction m_callback;
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template<typename APIReturnValueType, typename InternalReturnValueType = typename APITypeInfo<APIReturnValueType>::ImplType>
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class GenericCallback : public CallbackBase {
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typedef void (*CallbackFunction)(APIReturnValueType, WKErrorRef, void*);
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static PassRefPtr<GenericCallback> create(void* context, CallbackFunction callback)
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return adoptRef(new GenericCallback(context, callback));
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virtual ~GenericCallback()
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void performCallbackWithReturnValue(InternalReturnValueType returnValue)
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m_callback(toAPI(returnValue), 0, context());
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RefPtr<WebError> error = WebError::create();
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m_callback(0, toAPI(error.get()), context());
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GenericCallback(void* context, CallbackFunction callback)
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: CallbackBase(context)
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, m_callback(callback)
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CallbackFunction m_callback;
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// FIXME: Make a version of CallbackBase with two arguments, and define ComputedPagesCallback as a specialization.
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class ComputedPagesCallback : public CallbackBase {
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typedef void (*CallbackFunction)(const Vector<WebCore::IntRect>&, double, WKErrorRef, void*);
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static PassRefPtr<ComputedPagesCallback> create(void* context, CallbackFunction callback)
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return adoptRef(new ComputedPagesCallback(context, callback));
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virtual ~ComputedPagesCallback()
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void performCallbackWithReturnValue(const Vector<WebCore::IntRect>& returnValue1, double returnValue2)
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m_callback(returnValue1, returnValue2, 0, context());
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RefPtr<WebError> error = WebError::create();
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m_callback(Vector<WebCore::IntRect>(), 0, toAPI(error.get()), context());
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ComputedPagesCallback(void* context, CallbackFunction callback)
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: CallbackBase(context)
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, m_callback(callback)
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CallbackFunction m_callback;
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class ImageCallback : public CallbackBase {
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typedef void (*CallbackFunction)(const ShareableBitmap::Handle&, WKErrorRef, void*);
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static PassRefPtr<ImageCallback> create(void* context, CallbackFunction callback)
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return adoptRef(new ImageCallback(context, callback));
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virtual ~ImageCallback()
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void performCallbackWithReturnValue(const ShareableBitmap::Handle& returnValue1)
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m_callback(returnValue1, 0, context());
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RefPtr<WebError> error = WebError::create();
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ShareableBitmap::Handle handle;
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m_callback(handle, toAPI(error.get()), context());
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ImageCallback(void* context, CallbackFunction callback)
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: CallbackBase(context)
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, m_callback(callback)
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CallbackFunction m_callback;
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void invalidateCallbackMap(HashMap<uint64_t, T>& map)
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Vector<T> callbacksVector;
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copyValuesToVector(map, callbacksVector);
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for (size_t i = 0, size = callbacksVector.size(); i < size; ++i)
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callbacksVector[i]->invalidate();
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} // namespace WebKit
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#endif // GenericCallback_h