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1 // Copyright 2014 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 ASH_IME_CANDIDATE_WINDOW_VIEW_H_ | |
6 #define ASH_IME_CANDIDATE_WINDOW_VIEW_H_ | |
7 | |
8 #include "ash/ash_export.h" | |
9 #include "ui/base/ime/candidate_window.h" | |
10 #include "ui/views/bubble/bubble_delegate.h" | |
11 #include "ui/views/controls/button/button.h" | |
12 | |
13 namespace ash { | |
14 namespace ime { | |
15 | |
16 class CandidateView; | |
17 class InformationTextArea; | |
18 | |
19 // CandidateWindowView is the main container of the candidate window UI. | |
20 class ASH_EXPORT CandidateWindowView : public views::BubbleDelegateView, | |
21 public views::ButtonListener { | |
22 public: | |
23 // The object can be monitored by the observer. | |
24 class Observer { | |
25 public: | |
26 virtual ~Observer() {} | |
27 // The function is called when a candidate is committed. | |
28 virtual void OnCandidateCommitted(int index) = 0; | |
29 }; | |
30 | |
31 explicit CandidateWindowView(gfx::NativeView parent); | |
32 ~CandidateWindowView() override; | |
33 views::Widget* InitWidget(); | |
34 | |
35 // Adds the given observer. The ownership is not transferred. | |
36 void AddObserver(Observer* observer) { | |
37 observers_.AddObserver(observer); | |
38 } | |
39 | |
40 // Removes the given observer. | |
41 void RemoveObserver(Observer* observer) { | |
42 observers_.RemoveObserver(observer); | |
43 } | |
44 | |
45 // Hides the lookup table. | |
46 void HideLookupTable(); | |
47 | |
48 // Hides the auxiliary text. | |
49 void HideAuxiliaryText(); | |
50 | |
51 // Hides the preedit text. | |
52 void HidePreeditText(); | |
53 | |
54 // Shows the lookup table. | |
55 void ShowLookupTable(); | |
56 | |
57 // Shows the auxiliary text. | |
58 void ShowAuxiliaryText(); | |
59 | |
60 // Shows the preedit text. | |
61 void ShowPreeditText(); | |
62 | |
63 // Updates the preedit text. | |
64 void UpdatePreeditText(const base::string16& text); | |
65 | |
66 // Updates candidates of the candidate window from |candidate_window|. | |
67 // Candidates are arranged per |orientation|. | |
68 void UpdateCandidates(const ui::CandidateWindow& candidate_window); | |
69 | |
70 void SetCursorBounds(const gfx::Rect& cursor_bounds, | |
71 const gfx::Rect& composition_head); | |
72 | |
73 private: | |
74 friend class CandidateWindowViewTest; | |
75 | |
76 // Overridden from views::ButtonListener: | |
77 void ButtonPressed(views::Button* sender, const ui::Event& event) override; | |
78 | |
79 void SelectCandidateAt(int index_in_page); | |
80 void UpdateVisibility(); | |
81 | |
82 // Initializes the candidate views if needed. | |
83 void MaybeInitializeCandidateViews( | |
84 const ui::CandidateWindow& candidate_window); | |
85 | |
86 // The candidate window data model. | |
87 ui::CandidateWindow candidate_window_; | |
88 | |
89 // The index in the current page of the candidate currently being selected. | |
90 int selected_candidate_index_in_page_; | |
91 | |
92 // The observers of the object. | |
93 ObserverList<Observer> observers_; | |
94 | |
95 // Views created in the class will be part of tree of |this|, so these | |
96 // child views will be deleted when |this| is deleted. | |
97 InformationTextArea* auxiliary_text_; | |
98 InformationTextArea* preedit_; | |
99 views::View* candidate_area_; | |
100 | |
101 // The candidate views are used for rendering candidates. | |
102 std::vector<CandidateView*> candidate_views_; | |
103 | |
104 // Current columns size in |candidate_area_|. | |
105 gfx::Size previous_shortcut_column_size_; | |
106 gfx::Size previous_candidate_column_size_; | |
107 gfx::Size previous_annotation_column_size_; | |
108 | |
109 // The last cursor bounds. | |
110 gfx::Rect cursor_bounds_; | |
111 | |
112 // The last compostion head bounds. | |
113 gfx::Rect composition_head_bounds_; | |
114 | |
115 // True if the candidate window should be shown with aligning with composition | |
116 // text as opposed to the cursor. | |
117 bool should_show_at_composition_head_; | |
118 | |
119 // True if the candidate window should be shonw on the upper side of | |
120 // composition text. | |
121 bool should_show_upper_side_; | |
122 | |
123 // True if the candidate window was open. This is used to determine when to | |
124 // send OnCandidateWindowOpened and OnCandidateWindowClosed events. | |
125 bool was_candidate_window_open_; | |
126 | |
127 DISALLOW_COPY_AND_ASSIGN(CandidateWindowView); | |
128 }; | |
129 | |
130 } // namespace ime | |
131 } // namespace ash | |
132 | |
133 #endif // ASH_IME_CANDIDATE_WINDOW_VIEW_H_ | |
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