/*

 * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.

 * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * 1.  Redistributions of source code must retain the above copyright

 *     notice, this list of conditions and the following disclaimer. 

 * 2.  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. 

 * 3.  Neither the name of Apple Computer, Inc. ("Apple") 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 APPLE AND ITS 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 APPLE OR ITS 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.

 */

#ifndef PolicyChecker_h

#define PolicyChecker_h

#include "FrameLoaderTypes.h"

#include "PlatformString.h"

#include "PolicyCallback.h"

#include "ResourceRequest.h"

#include <wtf/PassRefPtr.h>

namespace WebCore {

class DocumentLoader;

class FormState;

class Frame;

class NavigationAction;

class ResourceError;

class ResourceResponse;

class PolicyChecker : public Noncopyable {

public:

    PolicyChecker(Frame*);

    void checkNavigationPolicy(const ResourceRequest&, DocumentLoader*, PassRefPtr<FormState>, NavigationPolicyDecisionFunction, void* argument);

    void checkNavigationPolicy(const ResourceRequest&, NavigationPolicyDecisionFunction, void* argument);

    void checkNewWindowPolicy(const NavigationAction&, NewWindowPolicyDecisionFunction, const ResourceRequest&, PassRefPtr<FormState>, const String& frameName, void* argument);

    void checkContentPolicy(const String& MIMEType, ContentPolicyDecisionFunction, void* argument);

    // FIXME: These are different.  They could use better names.

    void cancelCheck();

    void stopCheck();

    void cannotShowMIMEType(const ResourceResponse&);

    FrameLoadType loadType() const { return m_loadType; }

    void setLoadType(FrameLoadType loadType) { m_loadType = loadType; }

    bool delegateIsDecidingNavigationPolicy() const { return m_delegateIsDecidingNavigationPolicy; }

    bool delegateIsHandlingUnimplementablePolicy() const { return m_delegateIsHandlingUnimplementablePolicy; }

    // FIXME: This function is a cheat.  Basically, this is just an asynchronouc callback

    // from the FrameLoaderClient, but this callback uses the policy types and so has to

    // live on this object.  In the long term, we should create a type for non-policy

    // callbacks from the FrameLoaderClient and remove this vestige.  I just don't have

    // the heart to hack on all the platforms to make that happen right now.

    void continueLoadAfterWillSubmitForm(PolicyAction);

private:

    void continueAfterNavigationPolicy(PolicyAction);

    void continueAfterNewWindowPolicy(PolicyAction);

    void continueAfterContentPolicy(PolicyAction);

    void handleUnimplementablePolicy(const ResourceError&);

    Frame* m_frame;

    bool m_delegateIsDecidingNavigationPolicy;

    bool m_delegateIsHandlingUnimplementablePolicy;

    // This identifies the type of navigation action which prompted this load. Note 

    // that WebKit conveys this value as the WebActionNavigationTypeKey value

    // on navigation action delegate callbacks.

    FrameLoadType m_loadType;

    PolicyCallback m_callback;

};

} // namespace WebCore

#endif // PolicyChecker_h