1 // Copyright 2013 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.
5 #include "win8/metro_driver/ime/input_source.h"
11 #include "base/bind.h"
12 #include "base/callback.h"
13 #include "base/logging.h"
14 #include "base/memory/ref_counted.h"
15 #include "base/observer_list.h"
16 #include "base/win/scoped_comptr.h"
17 #include "ui/base/win/atl_module.h"
18 #include "win8/metro_driver/ime/input_source_observer.h"
20 namespace metro_driver {
23 // An implementation of ITfLanguageProfileNotifySink interface, which will be
24 // used to receive notifications when the text input source is changed.
25 class ATL_NO_VTABLE InputSourceMonitor
26 : public CComObjectRootEx<CComMultiThreadModel>,
27 public ITfLanguageProfileNotifySink {
30 : cookie_(TF_INVALID_COOKIE) {
33 BEGIN_COM_MAP(InputSourceMonitor)
34 COM_INTERFACE_ENTRY(ITfLanguageProfileNotifySink)
37 bool Initialize(ITfSource* source) {
38 DWORD cookie = TF_INVALID_COOKIE;
39 HRESULT hr = source->AdviseSink(IID_ITfLanguageProfileNotifySink,
43 LOG(ERROR) << "ITfSource::AdviseSink failed. hr = " << hr;
51 void SetCallback(base::Closure on_language_chanaged) {
52 on_language_chanaged_ = on_language_chanaged;
56 if (cookie_ == TF_INVALID_COOKIE || !source_)
58 if (FAILED(source_->UnadviseSink(cookie_)))
60 cookie_ = TF_INVALID_COOKIE;
65 // ITfLanguageProfileNotifySink overrides:
66 STDMETHOD(OnLanguageChange)(LANGID langid, BOOL *accept) override {
73 STDMETHOD(OnLanguageChanged)() override {
74 if (!on_language_chanaged_.is_null())
75 on_language_chanaged_.Run();
79 base::Closure on_language_chanaged_;
80 base::win::ScopedComPtr<ITfSource> source_;
83 DISALLOW_COPY_AND_ASSIGN(InputSourceMonitor);
86 class InputSourceImpl : public InputSource {
88 InputSourceImpl(ITfInputProcessorProfileMgr* profile_manager,
89 InputSourceMonitor* monitor)
90 : profile_manager_(profile_manager),
92 monitor_->SetCallback(base::Bind(&InputSourceImpl::OnLanguageChanged,
93 base::Unretained(this)));
95 virtual ~InputSourceImpl() {
96 monitor_->SetCallback(base::Closure());
101 // InputSource overrides.
102 virtual bool GetActiveSource(LANGID* langid, bool* is_ime) override {
103 TF_INPUTPROCESSORPROFILE profile = {};
104 HRESULT hr = profile_manager_->GetActiveProfile(GUID_TFCAT_TIP_KEYBOARD,
107 LOG(ERROR) << "ITfInputProcessorProfileMgr::GetActiveProfile failed."
111 *langid = profile.langid;
112 *is_ime = profile.dwProfileType == TF_PROFILETYPE_INPUTPROCESSOR;
115 virtual void AddObserver(InputSourceObserver* observer) override {
116 observer_list_.AddObserver(observer);
118 virtual void RemoveObserver(InputSourceObserver* observer) override {
119 observer_list_.RemoveObserver(observer);
121 void OnLanguageChanged() {
122 FOR_EACH_OBSERVER(InputSourceObserver,
124 OnInputSourceChanged());
127 base::win::ScopedComPtr<ITfInputProcessorProfileMgr> profile_manager_;
128 scoped_refptr<InputSourceMonitor> monitor_;
129 ObserverList<InputSourceObserver> observer_list_;
131 DISALLOW_COPY_AND_ASSIGN(InputSourceImpl);
137 scoped_ptr<InputSource> InputSource::Create() {
138 ui::win::CreateATLModuleIfNeeded();
140 base::win::ScopedComPtr<ITfInputProcessorProfileMgr> profile_manager;
141 HRESULT hr = profile_manager.CreateInstance(CLSID_TF_InputProcessorProfiles);
143 LOG(ERROR) << "Failed to instantiate CLSID_TF_InputProcessorProfiles."
145 return scoped_ptr<InputSource>();
147 base::win::ScopedComPtr<ITfSource> profiles_source;
148 hr = profiles_source.QueryFrom(profile_manager);
150 LOG(ERROR) << "QueryFrom to ITfSource failed. hr = " << hr;
151 return scoped_ptr<InputSource>();
154 CComObject<InputSourceMonitor>* monitor = NULL;
155 hr = CComObject<InputSourceMonitor>::CreateInstance(&monitor);
157 LOG(ERROR) << "CComObject<InputSourceMonitor>::CreateInstance failed."
159 return scoped_ptr<InputSource>();
161 if (!monitor->Initialize(profiles_source)) {
162 LOG(ERROR) << "Failed to initialize the monitor.";
163 return scoped_ptr<InputSource>();
166 // Transfer the ownership.
167 return scoped_ptr<InputSource>(new InputSourceImpl(profile_manager, monitor));
170 } // namespace metro_driver