1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_BASE_IME_WIN_TSF_EVENT_ROUTER_H_
#define UI_BASE_IME_WIN_TSF_EVENT_ROUTER_H_
#include <msctf.h>
#include <wrl/client.h>
#include "base/component_export.h"
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "ui/base/ime/text_input_type.h"
#include "ui/gfx/range/range.h"
namespace ui {
class TSFEventRouterObserver {
public:
TSFEventRouterObserver() {}
TSFEventRouterObserver(const TSFEventRouterObserver&) = delete;
TSFEventRouterObserver& operator=(const TSFEventRouterObserver&) = delete;
// Called when the number of currently opened candidate windows changes.
virtual void OnCandidateWindowCountChanged(size_t window_count) {}
// Called when a composition is started.
virtual void OnTSFStartComposition() {}
// Called when the text contents are updated. If there is no composition,
// gfx::Range::InvalidRange is passed to |composition_range|.
virtual void OnTextUpdated(const gfx::Range& composition_range) {}
// Called when a composition is terminated.
virtual void OnTSFEndComposition() {}
protected:
virtual ~TSFEventRouterObserver() {}
};
// This class monitors TSF related events and forwards them to given
// |observer|.
class COMPONENT_EXPORT(UI_BASE_IME_WIN) TSFEventRouter {
public:
// Do not pass NULL to |observer|.
explicit TSFEventRouter(TSFEventRouterObserver* observer);
TSFEventRouter(const TSFEventRouter&) = delete;
TSFEventRouter& operator=(const TSFEventRouter&) = delete;
virtual ~TSFEventRouter();
// Returns true if the IME is composing text.
bool IsImeComposing();
// Callbacks from the TSFEventRouterDelegate:
void OnCandidateWindowCountChanged(size_t window_count);
void OnTSFStartComposition();
void OnTextUpdated(const gfx::Range& composition_range);
void OnTSFEndComposition();
// Sets |thread_manager| to be monitored. |thread_manager| can be NULL.
void SetManager(ITfThreadMgr* thread_manager);
private:
class Delegate;
Microsoft::WRL::ComPtr<Delegate> delegate_;
raw_ptr<TSFEventRouterObserver> observer_;
};
} // namespace ui
#endif // UI_BASE_IME_WIN_TSF_EVENT_ROUTER_H_
|
