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