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| 1 // Copyright (c) 2006-2008 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 CHROME_BROWSER_PRINTING_PAGE_NUMBER_H__ | |
| 6 #define CHROME_BROWSER_PRINTING_PAGE_NUMBER_H__ | |
| 7 | |
| 8 #include <ostream> | |
| 9 | |
| 10 #include "chrome/browser/printing/page_range.h" | |
| 11 | |
| 12 namespace printing { | |
| 13 | |
| 14 class PrintSettings; | |
| 15 | |
| 16 // Represents a page series following the array of page ranges defined in a | |
| 17 // PrintSettings. | |
| 18 class PageNumber { | |
| 19 public: | |
| 20 // Initializes the page to the first page in the settings's range or 0. | |
| 21 PageNumber(const PrintSettings& settings, int document_page_count); | |
| 22 | |
| 23 PageNumber(); | |
| 24 | |
| 25 void operator=(const PageNumber& other); | |
| 26 | |
| 27 // Initializes the page to the first page in the setting's range or 0. It | |
| 28 // initialize to npos if the range is empty and document_page_count is 0. | |
| 29 void Init(const PrintSettings& settings, int document_page_count); | |
| 30 | |
| 31 // Converts to a page numbers. | |
| 32 int ToInt() const { | |
| 33 return page_number_; | |
| 34 } | |
| 35 | |
| 36 // Calculates the next page in the serie. | |
| 37 int operator++(); | |
| 38 | |
| 39 // Returns an instance that represents the end of a serie. | |
| 40 static const PageNumber npos() { | |
| 41 return PageNumber(); | |
| 42 } | |
| 43 | |
| 44 // Equality operator. Only the current page number is verified so that | |
| 45 // "page != PageNumber::npos()" works. | |
| 46 bool operator==(const PageNumber& other) const; | |
| 47 bool operator!=(const PageNumber& other) const; | |
| 48 | |
| 49 private: | |
| 50 // The page range to follow. | |
| 51 const PageRanges* ranges_; | |
| 52 | |
| 53 // The next page to be printed. -1 when not printing. | |
| 54 int page_number_; | |
| 55 | |
| 56 // The next page to be printed. -1 when not used. Valid only if | |
| 57 // document()->settings().range.empty() is false. | |
| 58 int page_range_index_; | |
| 59 | |
| 60 // Number of expected pages in the document. Used when ranges_ is NULL. | |
| 61 int document_page_count_; | |
| 62 }; | |
| 63 | |
| 64 // Debug output support. | |
| 65 template<class E, class T> | |
| 66 inline typename std::basic_ostream<E,T>& operator<<( | |
| 67 typename std::basic_ostream<E,T>& ss, const PageNumber& page) { | |
| 68 return ss << page.ToInt(); | |
| 69 } | |
| 70 | |
| 71 } // namespace printing | |
| 72 | |
| 73 #endif // CHROME_BROWSER_PRINTING_PAGE_NUMBER_H__ | |
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