1/*
2 * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
3 * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1.  Redistributions of source code must retain the above copyright
10 *     notice, this list of conditions and the following disclaimer.
11 * 2.  Redistributions in binary form must reproduce the above copyright
12 *     notice, this list of conditions and the following disclaimer in the
13 *     documentation and/or other materials provided with the distribution.
14 * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
15 *     its contributors may be used to endorse or promote products derived
16 *     from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#ifndef PolicyChecker_h
31#define PolicyChecker_h
32
33#include "FrameLoaderTypes.h"
34#include "PolicyCallback.h"
35#include "ResourceRequest.h"
36#include <wtf/PassRefPtr.h>
37#include <wtf/text/WTFString.h>
38
39namespace WebCore {
40
41class DocumentLoader;
42class FormState;
43class Frame;
44class NavigationAction;
45class ResourceError;
46class ResourceResponse;
47
48class PolicyChecker {
49    WTF_MAKE_NONCOPYABLE(PolicyChecker);
50public:
51    explicit PolicyChecker(Frame&);
52
53    void checkNavigationPolicy(const ResourceRequest&, DocumentLoader*, PassRefPtr<FormState>, NavigationPolicyDecisionFunction);
54    void checkNavigationPolicy(const ResourceRequest&, NavigationPolicyDecisionFunction);
55    void checkNewWindowPolicy(const NavigationAction&, const ResourceRequest&, PassRefPtr<FormState>, const String& frameName, NewWindowPolicyDecisionFunction);
56    void checkContentPolicy(const ResourceResponse&, ContentPolicyDecisionFunction);
57
58    // FIXME: These are different.  They could use better names.
59    void cancelCheck();
60    void stopCheck();
61
62    void cannotShowMIMEType(const ResourceResponse&);
63
64    FrameLoadType loadType() const { return m_loadType; }
65    void setLoadType(FrameLoadType loadType) { m_loadType = loadType; }
66
67    bool delegateIsDecidingNavigationPolicy() const { return m_delegateIsDecidingNavigationPolicy; }
68    bool delegateIsHandlingUnimplementablePolicy() const { return m_delegateIsHandlingUnimplementablePolicy; }
69
70    // FIXME: This function is a cheat.  Basically, this is just an asynchronouc callback
71    // from the FrameLoaderClient, but this callback uses the policy types and so has to
72    // live on this object.  In the long term, we should create a type for non-policy
73    // callbacks from the FrameLoaderClient and remove this vestige.  I just don't have
74    // the heart to hack on all the platforms to make that happen right now.
75    void continueLoadAfterWillSubmitForm(PolicyAction);
76
77private:
78    void continueAfterNavigationPolicy(PolicyAction);
79    void continueAfterNewWindowPolicy(PolicyAction);
80    void continueAfterContentPolicy(PolicyAction);
81
82    void handleUnimplementablePolicy(const ResourceError&);
83
84    Frame& m_frame;
85
86    bool m_delegateIsDecidingNavigationPolicy;
87    bool m_delegateIsHandlingUnimplementablePolicy;
88
89    // This identifies the type of navigation action which prompted this load. Note
90    // that WebKit conveys this value as the WebActionNavigationTypeKey value
91    // on navigation action delegate callbacks.
92    FrameLoadType m_loadType;
93    PolicyCallback m_callback;
94};
95
96} // namespace WebCore
97
98#endif // PolicyChecker_h
99