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 UI_VIEWS_CONTROLS_MESSAGE_BOX_VIEW_H_
6#define UI_VIEWS_CONTROLS_MESSAGE_BOX_VIEW_H_
7
8#include <vector>
9
10#include "base/strings/string16.h"
11#include "ui/views/view.h"
12
13namespace views {
14
15class Checkbox;
16class Label;
17class Link;
18class LinkListener;
19class Textfield;
20
21// This class displays the contents of a message box. It is intended for use
22// within a constrained window, and has options for a message, prompt, OK
23// and Cancel buttons.
24class VIEWS_EXPORT MessageBoxView : public View {
25 public:
26  enum Options {
27    NO_OPTIONS = 0,
28    // For a message from a web page (not from Chrome's UI), such as script
29    // dialog text, each paragraph's directionality is auto-detected using the
30    // directionality of the paragraph's first strong character's. Please refer
31    // to HTML5 spec for details.
32    // http://dev.w3.org/html5/spec/Overview.html#text-rendered-in-native-user-interfaces:
33    // The spec does not say anything about alignment. And we choose to
34    // align all paragraphs according to the direction of the first paragraph.
35    DETECT_DIRECTIONALITY = 1 << 0,
36    HAS_PROMPT_FIELD = 1 << 1,
37  };
38
39  struct VIEWS_EXPORT InitParams {
40    explicit InitParams(const base::string16& message);
41    ~InitParams();
42
43    uint16 options;
44    base::string16 message;
45    base::string16 default_prompt;
46    int message_width;
47    int inter_row_vertical_spacing;
48  };
49
50  explicit MessageBoxView(const InitParams& params);
51
52  virtual ~MessageBoxView();
53
54  // Returns the text box.
55  views::Textfield* text_box() { return prompt_field_; }
56
57  // Returns user entered data in the prompt field.
58  base::string16 GetInputText();
59
60  // Returns true if a checkbox is selected, false otherwise. (And false if
61  // the message box has no checkbox.)
62  bool IsCheckBoxSelected();
63
64  // Adds a checkbox with the specified label to the message box if this is the
65  // first call. Otherwise, it changes the label of the current checkbox. To
66  // start, the message box has no checkbox until this function is called.
67  void SetCheckBoxLabel(const base::string16& label);
68
69  // Sets the state of the check-box.
70  void SetCheckBoxSelected(bool selected);
71
72  // Sets the text and the listener of the link. If |text| is empty, the link
73  // is removed.
74  void SetLink(const base::string16& text, LinkListener* listener);
75
76  // View:
77  virtual void GetAccessibleState(ui::AXViewState* state) OVERRIDE;
78
79 protected:
80  // View:
81  virtual void ViewHierarchyChanged(
82      const ViewHierarchyChangedDetails& details) OVERRIDE;
83  // Handles Ctrl-C and writes the message in the system clipboard.
84  virtual bool AcceleratorPressed(const ui::Accelerator& accelerator) OVERRIDE;
85
86 private:
87  // Sets up the layout manager and initializes the message labels and prompt
88  // field. This should only be called once, from the constructor.
89  void Init(const InitParams& params);
90
91  // Sets up the layout manager based on currently initialized views. Should be
92  // called when a view is initialized or changed.
93  void ResetLayoutManager();
94
95  // Message for the message box.
96  std::vector<Label*> message_labels_;
97
98  // Input text field for the message box.
99  Textfield* prompt_field_;
100
101  // Checkbox for the message box.
102  Checkbox* checkbox_;
103
104  // Link displayed at the bottom of the view.
105  Link* link_;
106
107  // Maximum width of the message label.
108  int message_width_;
109
110  // Spacing between rows in the grid layout.
111  int inter_row_vertical_spacing_;
112
113  DISALLOW_COPY_AND_ASSIGN(MessageBoxView);
114};
115
116}  // namespace views
117
118#endif  // UI_VIEWS_CONTROLS_MESSAGE_BOX_VIEW_H_
119