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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CONTENT_RENDERER_ANDROID_CONTENT_DETECTOR_H_ | 5 #ifndef CONTENT_RENDERER_ANDROID_CONTENT_DETECTOR_H_ |
6 #define CONTENT_RENDERER_ANDROID_CONTENT_DETECTOR_H_ | 6 #define CONTENT_RENDERER_ANDROID_CONTENT_DETECTOR_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 | 9 |
10 #include "base/macros.h" | 10 #include "base/macros.h" |
11 #include "third_party/WebKit/public/web/WebRange.h" | 11 #include "third_party/WebKit/public/platform/WebURL.h" |
12 #include "url/gurl.h" | 12 #include "url/gurl.h" |
13 | 13 |
14 namespace blink { | 14 namespace blink { |
15 class WebHitTestResult; | 15 class WebHitTestResult; |
16 } | 16 } |
17 | 17 |
18 namespace content { | 18 namespace content { |
19 | 19 |
20 // Base class for text-based content detectors. | 20 // Base class for text-based content detectors. |
21 class ContentDetector { | 21 class ContentDetector { |
22 public: | 22 public: |
23 // Holds the content detection results. | |
24 struct Result { | |
25 Result(); | |
26 Result(const blink::WebRange& content_boundaries, | |
27 const std::string& text, | |
28 const GURL& intent_url); | |
29 Result(const Result& other); | |
30 ~Result(); | |
31 | |
32 bool valid; | |
33 blink::WebRange content_boundaries; | |
34 std::string text; // Processed text of the content. | |
35 GURL intent_url; // URL of the intent that should process this content. | |
36 }; | |
37 | |
38 virtual ~ContentDetector() {} | 23 virtual ~ContentDetector() {} |
39 | 24 |
40 // Returns a WebKit range delimiting the contents found around the tapped | 25 // Returns an intent URL for the content around the hit_test. |
41 // position. If no content is found a null range will be returned. | 26 // If no content is found, an empty URL will be returned. |
42 Result FindTappedContent(const blink::WebHitTestResult& hit_test); | 27 blink::WebURL FindTappedContent(const blink::WebHitTestResult& hit_test); |
43 | 28 |
44 protected: | 29 protected: |
45 ContentDetector() {} | 30 ContentDetector() {} |
46 | 31 |
47 // Parses the input string defined by the begin/end iterators returning true | 32 // Parses the input string defined by the begin/end iterators returning true |
48 // if the desired content is found. The start and end positions relative to | 33 // if the desired content is found. The start and end positions relative to |
49 // the input iterators are returned in start_pos and end_pos. | 34 // the input iterators are returned in start_pos and end_pos. |
50 // The end position is assumed to be non-inclusive. | 35 // The end position is assumed to be non-inclusive. |
51 virtual bool FindContent(const base::string16::const_iterator& begin, | 36 virtual bool FindContent(const base::string16::const_iterator& begin, |
52 const base::string16::const_iterator& end, | 37 const base::string16::const_iterator& end, |
53 size_t* start_pos, | 38 size_t* start_pos, |
54 size_t* end_pos, | 39 size_t* end_pos, |
55 std::string* content_text) = 0; | 40 std::string* content_text) = 0; |
56 | 41 |
57 // Returns the intent URL that should process the content, if any. | 42 // Returns the intent URL that should process the content, if any. |
58 virtual GURL GetIntentURL(const std::string& content_text) = 0; | 43 virtual GURL GetIntentURL(const std::string& content_text) = 0; |
59 | 44 |
60 // Returns the maximum length of text to be extracted around the tapped | 45 // Returns the maximum length of text to be extracted around the tapped |
61 // position in order to search for content. | 46 // position in order to search for content. |
62 virtual size_t GetMaximumContentLength() = 0; | 47 virtual size_t GetMaximumContentLength() = 0; |
63 | 48 |
64 blink::WebRange FindContentRange(const blink::WebHitTestResult& hit_test, | 49 bool FindContentRange(const blink::WebHitTestResult& hit_test, |
65 std::string* content_text); | 50 std::string* content_text); |
66 | 51 |
67 DISALLOW_COPY_AND_ASSIGN(ContentDetector); | 52 DISALLOW_COPY_AND_ASSIGN(ContentDetector); |
68 }; | 53 }; |
69 | 54 |
70 } // namespace content | 55 } // namespace content |
71 | 56 |
72 #endif // CONTENT_RENDERER_ANDROID_CONTENT_DETECTOR_H_ | 57 #endif // CONTENT_RENDERER_ANDROID_CONTENT_DETECTOR_H_ |
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