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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 CHROME_BROWSER_PRINTING_PRINT_JOB_WORKER_H_ | 5 #ifndef CHROME_BROWSER_PRINTING_PRINT_JOB_WORKER_H_ |
| 6 #define CHROME_BROWSER_PRINTING_PRINT_JOB_WORKER_H_ | 6 #define CHROME_BROWSER_PRINTING_PRINT_JOB_WORKER_H_ |
| 7 | 7 |
| 8 #include "base/memory/ref_counted.h" | 8 #include "base/memory/ref_counted.h" |
| 9 #include "base/memory/scoped_ptr.h" | 9 #include "base/memory/scoped_ptr.h" |
| 10 #include "base/memory/weak_ptr.h" | 10 #include "base/memory/weak_ptr.h" |
| 11 #include "base/threading/thread.h" | 11 #include "base/threading/thread.h" |
| 12 #include "printing/page_number.h" | 12 #include "printing/page_number.h" |
| 13 #include "printing/print_destination_interface.h" | 13 #include "printing/print_destination_interface.h" |
| 14 #include "printing/printing_context.h" | 14 #include "printing/printing_context.h" |
| 15 #include "printing/print_job_constants.h" | 15 #include "printing/print_job_constants.h" |
| 16 | 16 |
| 17 namespace base { | 17 namespace base { |
| 18 class DictionaryValue; | 18 class DictionaryValue; |
| 19 } | 19 } |
| 20 | 20 |
| 21 namespace printing { | 21 namespace printing { |
| 22 | 22 |
| 23 class PrintJob; | 23 class PrintJob; |
| 24 class PrintJobWorkerOwner; | 24 class PrintJobWorkerOwner; |
| 25 class PrintedDocument; | 25 class PrintedDocument; |
| 26 class PrintedPage; | 26 class PrintedPage; |
| 27 class PrintingUIWebContentsObserver; | |
| 28 | 27 |
| 29 // Worker thread code. It manages the PrintingContext, which can be blocking | 28 // Worker thread code. It manages the PrintingContext, which can be blocking |
| 30 // and/or run a message loop. This is the object that generates most | 29 // and/or run a message loop. This is the object that generates most |
| 31 // NOTIFY_PRINT_JOB_EVENT notifications, but they are generated through a | 30 // NOTIFY_PRINT_JOB_EVENT notifications, but they are generated through a |
| 32 // NotificationTask task to be executed from the right thread, the UI thread. | 31 // NotificationTask task to be executed from the right thread, the UI thread. |
| 33 // PrintJob always outlives its worker instance. | 32 // PrintJob always outlives its worker instance. |
| 34 class PrintJobWorker { | 33 class PrintJobWorker { |
| 35 public: | 34 public: |
| 36 explicit PrintJobWorker(PrintJobWorkerOwner* owner); | 35 PrintJobWorker(int render_process_id, |
| 36 int render_view_id, |
| 37 PrintJobWorkerOwner* owner); |
| 37 virtual ~PrintJobWorker(); | 38 virtual ~PrintJobWorker(); |
| 38 | 39 |
| 39 void SetNewOwner(PrintJobWorkerOwner* new_owner); | 40 void SetNewOwner(PrintJobWorkerOwner* new_owner); |
| 40 | 41 |
| 41 // Set a destination for print. | 42 // Set a destination for print. |
| 42 // This supersedes the document's rendering destination. | 43 // This supersedes the document's rendering destination. |
| 43 void SetPrintDestination(PrintDestinationInterface* destination); | 44 void SetPrintDestination(PrintDestinationInterface* destination); |
| 44 | 45 |
| 45 // Initializes the print settings. If |ask_user_for_settings| is true, a | 46 // Initializes the print settings. If |ask_user_for_settings| is true, a |
| 46 // Print... dialog box will be shown to ask the user his preference. | 47 // Print... dialog box will be shown to ask the user his preference. |
| 47 void GetSettings( | 48 void GetSettings( |
| 48 bool ask_user_for_settings, | 49 bool ask_user_for_settings, |
| 49 scoped_ptr<PrintingUIWebContentsObserver> web_contents_observer, | |
| 50 int document_page_count, | 50 int document_page_count, |
| 51 bool has_selection, | 51 bool has_selection, |
| 52 MarginType margin_type); | 52 MarginType margin_type); |
| 53 | 53 |
| 54 // Set the new print settings. | 54 // Set the new print settings. |
| 55 void SetSettings( | 55 void SetSettings(scoped_ptr<base::DictionaryValue> new_settings); |
| 56 scoped_ptr<base::DictionaryValue> new_settings); | |
| 57 | 56 |
| 58 // Starts the printing loop. Every pages are printed as soon as the data is | 57 // Starts the printing loop. Every pages are printed as soon as the data is |
| 59 // available. Makes sure the new_document is the right one. | 58 // available. Makes sure the new_document is the right one. |
| 60 void StartPrinting(PrintedDocument* new_document); | 59 void StartPrinting(PrintedDocument* new_document); |
| 61 | 60 |
| 62 // Updates the printed document. | 61 // Updates the printed document. |
| 63 void OnDocumentChanged(PrintedDocument* new_document); | 62 void OnDocumentChanged(PrintedDocument* new_document); |
| 64 | 63 |
| 65 // Dequeues waiting pages. Called when PrintJob receives a | 64 // Dequeues waiting pages. Called when PrintJob receives a |
| 66 // NOTIFY_PRINTED_DOCUMENT_UPDATED notification. It's time to look again if | 65 // NOTIFY_PRINTED_DOCUMENT_UPDATED notification. It's time to look again if |
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| 105 void OnDocumentDone(); | 104 void OnDocumentDone(); |
| 106 | 105 |
| 107 // Discards the current document, the current page and cancels the printing | 106 // Discards the current document, the current page and cancels the printing |
| 108 // context. | 107 // context. |
| 109 void OnFailure(); | 108 void OnFailure(); |
| 110 | 109 |
| 111 // Asks the user for print settings. Must be called on the UI thread. | 110 // Asks the user for print settings. Must be called on the UI thread. |
| 112 // Required on Mac and Linux. Windows can display UI from non-main threads, | 111 // Required on Mac and Linux. Windows can display UI from non-main threads, |
| 113 // but sticks with this for consistency. | 112 // but sticks with this for consistency. |
| 114 void GetSettingsWithUI( | 113 void GetSettingsWithUI( |
| 115 scoped_ptr<PrintingUIWebContentsObserver> web_contents_observer, | |
| 116 int document_page_count, | 114 int document_page_count, |
| 117 bool has_selection); | 115 bool has_selection); |
| 118 | 116 |
| 119 // The callback used by PrintingContext::GetSettingsWithUI() to notify this | 117 // The callback used by PrintingContext::GetSettingsWithUI() to notify this |
| 120 // object that the print settings are set. This is needed in order to bounce | 118 // object that the print settings are set. This is needed in order to bounce |
| 121 // back into the IO thread for GetSettingsDone(). | 119 // back into the IO thread for GetSettingsDone(). |
| 122 void GetSettingsWithUIDone(PrintingContext::Result result); | 120 void GetSettingsWithUIDone(PrintingContext::Result result); |
| 123 | 121 |
| 124 // Called on the UI thread to update the print settings. | 122 // Called on the UI thread to update the print settings. |
| 125 void UpdatePrintSettings(scoped_ptr<base::DictionaryValue> new_settings); | 123 void UpdatePrintSettings(scoped_ptr<base::DictionaryValue> new_settings); |
| 126 | 124 |
| 127 // Reports settings back to owner_. | 125 // Reports settings back to owner_. |
| 128 void GetSettingsDone(PrintingContext::Result result); | 126 void GetSettingsDone(PrintingContext::Result result); |
| 129 | 127 |
| 130 // Use the default settings. When using GTK+ or Mac, this can still end up | 128 // Use the default settings. When using GTK+ or Mac, this can still end up |
| 131 // displaying a dialog. So this needs to happen from the UI thread on these | 129 // displaying a dialog. So this needs to happen from the UI thread on these |
| 132 // systems. | 130 // systems. |
| 133 void UseDefaultSettings(); | 131 void UseDefaultSettings(); |
| 134 | 132 |
| 133 // Printing context delegate. |
| 134 scoped_ptr<PrintingContext::Delegate> printing_context_delegate_; |
| 135 |
| 135 // Information about the printer setting. | 136 // Information about the printer setting. |
| 136 scoped_ptr<PrintingContext> printing_context_; | 137 scoped_ptr<PrintingContext> printing_context_; |
| 137 | 138 |
| 138 // The printed document. Only has read-only access. | 139 // The printed document. Only has read-only access. |
| 139 scoped_refptr<PrintedDocument> document_; | 140 scoped_refptr<PrintedDocument> document_; |
| 140 | 141 |
| 141 // The print destination, may be NULL. | 142 // The print destination, may be NULL. |
| 142 scoped_refptr<PrintDestinationInterface> destination_; | 143 scoped_refptr<PrintDestinationInterface> destination_; |
| 143 | 144 |
| 144 // The print job owning this worker thread. It is guaranteed to outlive this | 145 // The print job owning this worker thread. It is guaranteed to outlive this |
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| 156 | 157 |
| 157 // Used to generate a WeakPtr for callbacks. | 158 // Used to generate a WeakPtr for callbacks. |
| 158 base::WeakPtrFactory<PrintJobWorker> weak_factory_; | 159 base::WeakPtrFactory<PrintJobWorker> weak_factory_; |
| 159 | 160 |
| 160 DISALLOW_COPY_AND_ASSIGN(PrintJobWorker); | 161 DISALLOW_COPY_AND_ASSIGN(PrintJobWorker); |
| 161 }; | 162 }; |
| 162 | 163 |
| 163 } // namespace printing | 164 } // namespace printing |
| 164 | 165 |
| 165 #endif // CHROME_BROWSER_PRINTING_PRINT_JOB_WORKER_H_ | 166 #endif // CHROME_BROWSER_PRINTING_PRINT_JOB_WORKER_H_ |
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