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1 /*
2  * Copyright (C) 2006, 2007, 2008, 2009, 2011 Apple Inc. All rights reserved.
3  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
4  * Copyright (C) Research In Motion Limited 2009. All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  *
10  * 1.  Redistributions of source code must retain the above copyright
11  *     notice, this list of conditions and the following disclaimer.
12  * 2.  Redistributions in binary form must reproduce the above copyright
13  *     notice, this list of conditions and the following disclaimer in the
14  *     documentation and/or other materials provided with the distribution.
15  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
16  *     its contributors may be used to endorse or promote products derived
17  *     from this software without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
20  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
21  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
23  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
26  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  */
30 
31 #ifndef SubframeLoader_h
32 #define SubframeLoader_h
33 
34 #include "FrameLoaderTypes.h"
35 #include "PlatformString.h"
36 #include <wtf/Forward.h>
37 #include <wtf/HashMap.h>
38 #include <wtf/Noncopyable.h>
39 #include <wtf/Vector.h>
40 
41 namespace WebCore {
42 
43 class Document;
44 class Frame;
45 class FrameLoaderClient;
46 class HTMLAppletElement;
47 class HTMLFrameOwnerElement;
48 class HTMLPlugInImageElement;
49 class IntSize;
50 class KURL;
51 #if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
52 class Node;
53 #endif
54 class Widget;
55 
56 // This is a slight misnomer. It handles the higher level logic of loading both subframes and plugins.
57 class SubframeLoader {
58     WTF_MAKE_NONCOPYABLE(SubframeLoader);
59 public:
60     SubframeLoader(Frame*);
61 
62     void clear();
63 
64     bool requestFrame(HTMLFrameOwnerElement*, const String& url, const AtomicString& frameName, bool lockHistory = true, bool lockBackForwardList = true);
65     bool requestObject(HTMLPlugInImageElement*, const String& url, const AtomicString& frameName,
66         const String& serviceType, const Vector<String>& paramNames, const Vector<String>& paramValues);
67 
68 #if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
69     // FIXME: This should take Element* instead of Node*, or better yet the
70     // specific type of Element which this code depends on.
71     PassRefPtr<Widget> loadMediaPlayerProxyPlugin(Node*, const KURL&, const Vector<String>& paramNames, const Vector<String>& paramValues);
72 #endif
73 
74     PassRefPtr<Widget> createJavaAppletWidget(const IntSize&, HTMLAppletElement*, const HashMap<String, String>& args);
75 
76     bool allowPlugins(ReasonForCallingAllowPlugins);
77 
containsPlugins()78     bool containsPlugins() const { return m_containsPlugins; }
79 
80     bool resourceWillUsePlugin(const String& url, const String& mimeType, bool shouldPreferPlugInsForImages);
81 
82 private:
83     bool requestPlugin(HTMLPlugInImageElement*, const KURL&, const String& serviceType, const Vector<String>& paramNames, const Vector<String>& paramValues, bool useFallback);
84     Frame* loadOrRedirectSubframe(HTMLFrameOwnerElement*, const KURL&, const AtomicString& frameName, bool lockHistory, bool lockBackForwardList);
85     Frame* loadSubframe(HTMLFrameOwnerElement*, const KURL&, const String& name, const String& referrer);
86     bool loadPlugin(HTMLPlugInImageElement*, const KURL&, const String& mimeType,
87         const Vector<String>& paramNames, const Vector<String>& paramValues, bool useFallback);
88 
89     bool shouldUsePlugin(const KURL&, const String& mimeType, bool shouldPreferPlugInsForImages, bool hasFallback, bool& useFallback);
90 
91     Document* document() const;
92 
93     bool m_containsPlugins;
94     Frame* m_frame;
95 
96     KURL completeURL(const String&) const;
97 };
98 
99 } // namespace WebCore
100 
101 #endif // SubframeLoader_h
102