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
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.service.search;
import static com.android.internal.util.function.pooled.PooledLambda.obtainMessage;
import android.annotation.CallSuper;
import android.annotation.MainThread;
import android.annotation.NonNull;
import android.annotation.SystemApi;
import android.app.Service;
import android.app.search.ISearchCallback;
import android.app.search.Query;
import android.app.search.SearchContext;
import android.app.search.SearchSessionId;
import android.app.search.SearchTarget;
import android.app.search.SearchTargetEvent;
import android.content.Intent;
import android.content.pm.ParceledListSlice;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.os.RemoteException;
import android.service.search.ISearchUiService.Stub;
import android.util.Slog;
import java.util.List;
import java.util.function.Consumer;
/**
* A service used to share the lifecycle of search UI (open, close, interaction)
* and also to return search result on a query.
*
* To understand the lifecycle of search session and how a query get issued,
* {@see SearchSession}
*
* @hide
*/
@SystemApi
public abstract class SearchUiService extends Service {
private static final boolean DEBUG = false;
private static final String TAG = "SearchUiService";
/**
* The {@link Intent} that must be declared as handled by the service.
*
* <p>The service must also require the {@link android.permission#MANAGE_SEARCH_UI}
* permission.
*
* @hide
*/
public static final String SERVICE_INTERFACE =
"android.service.search.SearchUiService";
private Handler mHandler;
private final android.service.search.ISearchUiService mInterface = new Stub() {
@Override
public void onCreateSearchSession(SearchContext context, SearchSessionId sessionId) {
mHandler.sendMessage(
obtainMessage(SearchUiService::onSearchSessionCreated,
SearchUiService.this, context, sessionId));
// to be removed
mHandler.sendMessage(
obtainMessage(SearchUiService::onCreateSearchSession,
SearchUiService.this, context, sessionId));
}
@Override
public void onQuery(SearchSessionId sessionId, Query input,
ISearchCallback callback) {
mHandler.sendMessage(
obtainMessage(SearchUiService::onQuery,
SearchUiService.this, sessionId, input,
new CallbackWrapper(callback)));
}
@Override
public void onNotifyEvent(SearchSessionId sessionId, Query query, SearchTargetEvent event) {
mHandler.sendMessage(
obtainMessage(SearchUiService::onNotifyEvent,
SearchUiService.this, sessionId, query, event));
}
@Override
public void onDestroy(SearchSessionId sessionId) {
mHandler.sendMessage(
obtainMessage(SearchUiService::doDestroy,
SearchUiService.this, sessionId));
}
};
@CallSuper
@Override
public void onCreate() {
super.onCreate();
mHandler = new Handler(Looper.getMainLooper(), null, true);
}
@Override
@NonNull
public final IBinder onBind(@NonNull Intent intent) {
if (SERVICE_INTERFACE.equals(intent.getAction())) {
return mInterface.asBinder();
}
Slog.w(TAG, "Tried to bind to wrong intent (should be "
+ SERVICE_INTERFACE + ": " + intent);
return null;
}
/**
* Creates a new search session.
*
* @deprecated this is method will be removed as soon as
* {@link #onSearchSessionCreated(SearchContext, SearchSessionId)}
* is adopted by the service.
*
* @removed
*/
@Deprecated
public void onCreateSearchSession(@NonNull SearchContext context,
@NonNull SearchSessionId sessionId) {}
/**
* A new search session is created.
*/
public void onSearchSessionCreated(@NonNull SearchContext context,
@NonNull SearchSessionId sessionId) {}
/**
* Called by the client to request search results using a query string.
*/
@MainThread
public abstract void onQuery(@NonNull SearchSessionId sessionId,
@NonNull Query query,
@NonNull Consumer<List<SearchTarget>> callback);
/**
* Called by a client to indicate an interaction (tap, long press, drag, etc) on target(s)
* and lifecycle event on the search surface (e.g., visibility change).
*
* {@see SearchTargetEvent}
*/
@MainThread
public abstract void onNotifyEvent(@NonNull SearchSessionId sessionId,
@NonNull Query query,
@NonNull SearchTargetEvent event);
private void doDestroy(@NonNull SearchSessionId sessionId) {
super.onDestroy();
onDestroy(sessionId);
}
/**
* Destroys a search session.
*/
@MainThread
public abstract void onDestroy(@NonNull SearchSessionId sessionId);
private static final class CallbackWrapper implements Consumer<List<SearchTarget>> {
private ISearchCallback mCallback;
CallbackWrapper(ISearchCallback callback) {
mCallback = callback;
}
@Override
public void accept(List<SearchTarget> searchTargets) {
try {
if (mCallback != null) {
if (DEBUG) {
Slog.d(TAG, "CallbackWrapper.accept searchTargets=" + searchTargets);
}
mCallback.onResult(new ParceledListSlice(searchTargets));
}
} catch (RemoteException e) {
Slog.e(TAG, "Error sending result:" + e);
}
}
}
}
|
