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      1 /*
      2  * Copyright (C) 2010. Adam Barth. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Adam Barth. ("Adam Barth") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #ifndef DocumentWriter_h
     30 #define DocumentWriter_h
     31 
     32 #include "KURL.h"
     33 #include "PlatformString.h"
     34 
     35 namespace WebCore {
     36 
     37 class Document;
     38 class Frame;
     39 class SecurityOrigin;
     40 class TextResourceDecoder;
     41 
     42 class DocumentWriter {
     43     WTF_MAKE_NONCOPYABLE(DocumentWriter);
     44 public:
     45     DocumentWriter(Frame*);
     46 
     47     // This is only called by ScriptController::executeIfJavaScriptURL
     48     // and always contains the result of evaluating a javascript: url.
     49     void replaceDocument(const String&);
     50 
     51     void begin();
     52     void begin(const KURL&, bool dispatchWindowObjectAvailable = true, SecurityOrigin* forcedSecurityOrigin = 0);
     53     void addData(const char* string, int length = -1, bool flush = false);
     54     void end();
     55     void endIfNotLoadingMainResource();
     56 
     57     void setFrame(Frame* frame) { m_frame = frame; }
     58 
     59     String encoding() const;
     60     void setEncoding(const String& encoding, bool userChosen);
     61 
     62     // FIXME: It's really unforunate to need to expose this piece of state.
     63     // I suspect a better design is to disentangle user-provided encodings,
     64     // default encodings, and the decoding we're currently using.
     65     String deprecatedFrameEncoding() const;
     66 
     67     const String& mimeType() const { return m_mimeType; }
     68     void setMIMEType(const String& type) { m_mimeType = type; }
     69 
     70     void setDecoder(TextResourceDecoder*);
     71 
     72     // Exposed for DoucmentParser::appendBytes
     73     TextResourceDecoder* createDecoderIfNeeded();
     74     void reportDataReceived();
     75 
     76     void setDocumentWasLoadedAsPartOfNavigation();
     77 
     78 private:
     79     PassRefPtr<Document> createDocument(const KURL&);
     80     void clear();
     81 
     82     Frame* m_frame;
     83 
     84     bool m_receivedData;
     85     String m_mimeType;
     86 
     87     bool m_encodingWasChosenByUser;
     88     String m_encoding;
     89     RefPtr<TextResourceDecoder> m_decoder;
     90 };
     91 
     92 } // namespace WebCore
     93 
     94 #endif // DocumentWriter_h
     95