captcha_view.h revision c407dc5cd9bdc5668497f21b26b09d988ab439de 
1// Copyright (c) 2010 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_CHROMEOS_LOGIN_CAPTCHA_VIEW_H_
6#define CHROME_BROWSER_CHROMEOS_LOGIN_CAPTCHA_VIEW_H_
7
8#include <string>
9
10#include "chrome/browser/chromeos/login/image_decoder.h"
11#include "googleurl/src/gurl.h"
12#include "views/controls/textfield/textfield.h"
13#include "views/window/dialog_delegate.h"
14
15namespace views {
16class ImageView;
17class View;
18class Window;
19}  // namespace views
20
21namespace chromeos {
22
23// A dialog box that shows a CAPTCHA image and allows user to input response.
24class CaptchaView : public views::View,
25                    public views::DialogDelegate,
26                    public views::Textfield::Controller,
27                    public ImageDecoder::Delegate {
28 public:
29  class Delegate {
30   public:
31    // Called when CAPTCHA answer has been entered.
32    virtual void OnCaptchaEntered(const std::string& captcha) = 0;
33
34   protected:
35     virtual ~Delegate() {}
36  };
37
38  // |captcha_url| represents CAPTCHA image URL.
39  explicit CaptchaView(const GURL& captcha_url);
40  virtual ~CaptchaView() {}
41
42  // views::DialogDelegate overrides:
43  virtual bool Accept();
44
45  // views::WindowDelegate overrides:
46  virtual bool IsModal() const { return true; }
47  virtual views::View* GetContentsView() { return this; }
48
49  // views::View overrides:
50  virtual std::wstring GetWindowTitle() const;
51
52  // views::Textfield::Controller implementation:
53  virtual void ContentsChanged(views::Textfield* sender,
54                                 const string16& new_contents) {}
55  virtual bool HandleKeystroke(views::Textfield* sender,
56                               const views::Textfield::Keystroke& keystroke);
57
58  // Overriden from ImageDownloader::Delegate:
59  virtual void OnImageDecoded(const SkBitmap& decoded_image);
60
61  void set_delegate(Delegate* delegate) {
62    delegate_ = delegate;
63  }
64
65 protected:
66  // views::View overrides:
67  virtual gfx::Size GetPreferredSize();
68  virtual void ViewHierarchyChanged(bool is_add,
69                                    views::View* parent,
70                                    views::View* child);
71
72 private:
73  // Initializes UI.
74  void Init();
75
76  Delegate* delegate_;
77  GURL captcha_url_;
78  views::ImageView* captcha_image_;
79  views::Textfield* captcha_textfield_;
80
81  DISALLOW_COPY_AND_ASSIGN(CaptchaView);
82};
83
84}  // namespace chromeos
85
86#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_CAPTCHA_VIEW_H_
87