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 3// found in the LICENSE file. 4 5#ifndef CHROME_BROWSER_PRINTING_PRINT_PREVIEW_MESSAGE_HANDLER_H_ 6#define CHROME_BROWSER_PRINTING_PRINT_PREVIEW_MESSAGE_HANDLER_H_ 7 8#include "base/compiler_specific.h" 9#include "content/public/browser/web_contents_observer.h" 10#include "content/public/browser/web_contents_user_data.h" 11 12class PrintPreviewUI; 13struct PrintHostMsg_DidGetPreviewPageCount_Params; 14struct PrintHostMsg_DidPreviewDocument_Params; 15struct PrintHostMsg_DidPreviewPage_Params; 16struct PrintHostMsg_RequestPrintPreview_Params; 17struct PrintHostMsg_SetOptionsFromDocument_Params; 18 19namespace content { 20class WebContents; 21} 22 23namespace gfx { 24class Rect; 25} 26 27namespace printing { 28 29struct PageSizeMargins; 30 31// Manages the print preview handling for a WebContents. 32class PrintPreviewMessageHandler 33 : public content::WebContentsObserver, 34 public content::WebContentsUserData<PrintPreviewMessageHandler> { 35 public: 36 virtual ~PrintPreviewMessageHandler(); 37 38 // content::WebContentsObserver implementation. 39 virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE; 40 41 private: 42 explicit PrintPreviewMessageHandler(content::WebContents* web_contents); 43 friend class content::WebContentsUserData<PrintPreviewMessageHandler>; 44 45 // Gets the print preview dialog associated with the WebContents being 46 // observed. 47 content::WebContents* GetPrintPreviewDialog(); 48 49 // Gets the PrintPreviewUI associated with the WebContents being observed. 50 PrintPreviewUI* GetPrintPreviewUI(); 51 52 // Message handlers. 53 void OnRequestPrintPreview( 54 const PrintHostMsg_RequestPrintPreview_Params& params); 55 void OnDidGetDefaultPageLayout( 56 const printing::PageSizeMargins& page_layout_in_points, 57 const gfx::Rect& printable_area_in_points, 58 bool has_custom_page_size_style); 59 void OnDidGetPreviewPageCount( 60 const PrintHostMsg_DidGetPreviewPageCount_Params& params); 61 void OnDidPreviewPage(const PrintHostMsg_DidPreviewPage_Params& params); 62 void OnMetafileReadyForPrinting( 63 const PrintHostMsg_DidPreviewDocument_Params& params); 64 void OnPrintPreviewFailed(int document_cookie); 65 void OnPrintPreviewCancelled(int document_cookie); 66 void OnInvalidPrinterSettings(int document_cookie); 67 void OnSetOptionsFromDocument( 68 const PrintHostMsg_SetOptionsFromDocument_Params& params); 69 70 DISALLOW_COPY_AND_ASSIGN(PrintPreviewMessageHandler); 71}; 72 73} // namespace printing 74 75#endif // CHROME_BROWSER_PRINTING_PRINT_PREVIEW_MESSAGE_HANDLER_H_ 76