1// Copyright (c) 2013 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CONTENT_RENDERER_SAVABLE_RESOURCES_H_
6#define CONTENT_RENDERER_SAVABLE_RESOURCES_H_
7
8#include <string>
9#include <vector>
10
11#include "content/common/content_export.h"
12#include "third_party/WebKit/public/platform/WebReferrerPolicy.h"
13#include "url/gurl.h"
14
15namespace blink {
16class WebElement;
17class WebString;
18class WebView;
19}
20
21// A collection of operations that access the underlying WebKit DOM directly.
22namespace content {
23
24// Structure for storage the result of getting all savable resource links
25// for current page. The consumer of the SavableResourcesResult is responsible
26// for keeping these pointers valid for the lifetime of the
27// SavableResourcesResult instance.
28struct SavableResourcesResult {
29  // vector which contains all savable links of sub resource.
30  std::vector<GURL>* resources_list;
31  // vector which contains corresponding all referral links of sub resource,
32  // it matched with links one by one.
33  std::vector<GURL>* referrer_urls_list;
34  // and the corresponding referrer policies.
35  std::vector<blink::WebReferrerPolicy>* referrer_policies_list;
36  // vector which contains all savable links of main frame and sub frames.
37  std::vector<GURL>* frames_list;
38
39  // Constructor.
40  SavableResourcesResult(
41      std::vector<GURL>* resources_list,
42      std::vector<GURL>* referrer_urls_list,
43      std::vector<blink::WebReferrerPolicy>* referrer_policies_list,
44      std::vector<GURL>* frames_list)
45      : resources_list(resources_list),
46        referrer_urls_list(referrer_urls_list),
47        referrer_policies_list(referrer_policies_list),
48        frames_list(frames_list) { }
49
50 private:
51  DISALLOW_COPY_AND_ASSIGN(SavableResourcesResult);
52};
53
54// Get all savable resource links from current webview, include main frame
55// and sub-frame. After collecting all savable resource links, this function
56// will send those links to embedder. Return value indicates whether we get
57// all saved resource links successfully.
58CONTENT_EXPORT bool GetAllSavableResourceLinksForCurrentPage(
59    blink::WebView* view,
60    const GURL& page_url,
61    SavableResourcesResult* savable_resources_result,
62    const char** savable_schemes);
63
64// Returns the value in an elements resource url attribute. For IMG, SCRIPT or
65// INPUT TYPE=image, returns the value in "src". For LINK TYPE=text/css, returns
66// the value in "href". For BODY, TABLE, TR, TD, returns the value in
67// "background". For BLOCKQUOTE, Q, DEL, INS, returns the value in "cite"
68// attribute. Otherwise returns a null WebString.
69CONTENT_EXPORT blink::WebString GetSubResourceLinkFromElement(
70    const blink::WebElement& element);
71
72}  // namespace content
73
74#endif  // CONTENT_RENDERER_SAVABLE_RESOURCES_H_
75