1/*
2 * Copyright (C) 2009 Google Inc. 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 are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifndef WebPageSerializer_h
32#define WebPageSerializer_h
33
34#include "../platform/WebCString.h"
35#include "../platform/WebCommon.h"
36#include "../platform/WebURL.h"
37#include "WebFrame.h"
38
39namespace blink {
40
41class WebPageSerializerClient;
42class WebString;
43class WebView;
44template <typename T> class WebVector;
45
46// Get html data by serializing all frames of current page with lists
47// which contain all resource links that have local copy.
48class WebPageSerializer {
49public:
50    struct Resource {
51        WebURL url;
52        WebCString mimeType;
53        WebCString data;
54    };
55
56    // Serializes all the frames from the WebView, retrieves the page's
57    // resources (such as images and CSS) and adds them to the passed vector.
58    // The first resource in that vector is the top frame contents.
59    // Note that this also strips-out any script tag or link to JavaScript.
60    BLINK_EXPORT static void serialize(WebView*, WebVector<Resource>*);
61
62    // Serializes the WebView contents to a MHTML representation.
63    BLINK_EXPORT static WebCString serializeToMHTML(WebView*);
64
65    // Similar to serializeToMHTML but uses binary encoding for the MHTML parts.
66    // This results in a smaller MHTML file but it might not be supported by other browsers.
67    BLINK_EXPORT static WebCString serializeToMHTMLUsingBinaryEncoding(WebView*);
68
69    // IMPORTANT:
70    // The API below is an older implementation of a pageserialization that
71    // will be removed soon.
72
73
74    // This function will find out all frames and serialize them to HTML data.
75    // We have a data buffer to temporary saving generated html data. We will
76    // sequentially call WebPageSeriazlierClient once the data buffer is full.
77    //
78    // Return false means no available frame has been serialized, otherwise
79    // return true.
80    //
81    // The parameter frame specifies which frame need to be serialized.
82    // The parameter recursive specifies whether we need to
83    // serialize all sub frames of the specified frame or not.
84    // The parameter client specifies the pointer of interface
85    // WebPageSerializerClient providing a sink interface to receive the
86    // individual chunks of data to be saved.
87    // The parameter links contain original URLs of all saved links.
88    // The parameter localPaths contain corresponding local file paths of all
89    // saved links, which matched with vector:links one by one.
90    // The parameter localDirectoryName is relative path of directory which
91    // contain all saved auxiliary files included all sub frames and resources.
92    BLINK_EXPORT static bool serialize(
93        WebLocalFrame*,
94        bool recursive,
95        WebPageSerializerClient*,
96        const WebVector<WebURL>& links,
97        const WebVector<WebString>& localPaths,
98        const WebString& localDirectoryName);
99
100    // Retrieve all the resource for the passed view, including the main frame
101    // and sub-frames. Returns true if all resources were retrieved
102    // successfully.
103    BLINK_EXPORT static bool retrieveAllResources(WebView*,
104                                                   const WebVector<WebCString>& supportedSchemes,
105                                                   WebVector<WebURL>* resources,
106                                                   WebVector<WebURL>* frames);
107
108    // FIXME: The following are here for unit testing purposes. Consider
109    // changing the unit tests instead.
110
111    // Generate the META for charset declaration.
112    BLINK_EXPORT static WebString generateMetaCharsetDeclaration(const WebString& charset);
113    // Generate the MOTW declaration.
114    BLINK_EXPORT static WebString generateMarkOfTheWebDeclaration(const WebURL&);
115    // Generate the default base tag declaration.
116    BLINK_EXPORT static WebString generateBaseTagDeclaration(const WebString& baseTarget);
117};
118
119} // namespace blink
120
121#endif
122