15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef CONTENT_RENDERER_ANDROID_CONTENT_DETECTOR_H_ 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CONTENT_RENDERER_ANDROID_CONTENT_DETECTOR_H_ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 87d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles)#include "third_party/WebKit/public/web/WebRange.h" 97dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch#include "url/gurl.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)namespace blink { 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class WebHitTestResult; 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace content { 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Base class for text-based content detectors. 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class ContentDetector { 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Holds the content detection results. 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct Result { 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Result(); 23f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) Result(const blink::WebRange& content_boundaries, 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const std::string& text, 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const GURL& intent_url); 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ~Result(); 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool valid; 29f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) blink::WebRange content_boundaries; 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string text; // Processed text of the content. 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) GURL intent_url; // URL of the intent that should process this content. 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~ContentDetector() {} 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns a WebKit range delimiting the contents found around the tapped 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // position. If no content is found a null range will be returned. 38f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) Result FindTappedContent(const blink::WebHitTestResult& hit_test); 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) protected: 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ContentDetector() {} 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Parses the input string defined by the begin/end iterators returning true 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // if the desired content is found. The start and end positions relative to 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the input iterators are returned in start_pos and end_pos. 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The end position is assumed to be non-inclusive. 47a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) virtual bool FindContent(const base::string16::const_iterator& begin, 48a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) const base::string16::const_iterator& end, 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t* start_pos, 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t* end_pos, 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string* content_text) = 0; 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the intent URL that should process the content, if any. 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual GURL GetIntentURL(const std::string& content_text) = 0; 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the maximum length of text to be extracted around the tapped 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // position in order to search for content. 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual size_t GetMaximumContentLength() = 0; 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 60f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) blink::WebRange FindContentRange(const blink::WebHitTestResult& hit_test, 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string* content_text); 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(ContentDetector); 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace content 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // CONTENT_RENDERER_ANDROID_CONTENT_DETECTOR_H_ 69