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
|
/*
* Copyright (C) 2017 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.app.slice;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Queue;
import java.util.Spliterators;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import java.util.stream.StreamSupport;
/**
* A bunch of utilities for searching the contents of a slice.
* @hide
*/
public class SliceQuery {
private static final String TAG = "SliceQuery";
/**
* @hide
*/
public static SliceItem findNotContaining(SliceItem container, List<SliceItem> list) {
SliceItem ret = null;
while (ret == null && list.size() != 0) {
SliceItem remove = list.remove(0);
if (!contains(container, remove)) {
ret = remove;
}
}
return ret;
}
/**
* @hide
*/
private static boolean contains(SliceItem container, SliceItem item) {
if (container == null || item == null) return false;
return stream(container).filter(s -> (s == item)).findAny().isPresent();
}
/**
* @hide
*/
public static List<SliceItem> findAll(SliceItem s, int type) {
return findAll(s, type, (String[]) null, null);
}
/**
* @hide
*/
public static List<SliceItem> findAll(SliceItem s, int type, String hints, String nonHints) {
return findAll(s, type, new String[]{ hints }, new String[]{ nonHints });
}
/**
* @hide
*/
public static List<SliceItem> findAll(SliceItem s, int type, String[] hints,
String[] nonHints) {
return stream(s).filter(item -> (type == -1 || item.getType() == type)
&& (item.hasHints(hints) && !item.hasAnyHints(nonHints)))
.collect(Collectors.toList());
}
/**
* @hide
*/
public static SliceItem find(Slice s, int type, String hints, String nonHints) {
return find(s, type, new String[]{ hints }, new String[]{ nonHints });
}
/**
* @hide
*/
public static SliceItem find(Slice s, int type) {
return find(s, type, (String[]) null, null);
}
/**
* @hide
*/
public static SliceItem find(SliceItem s, int type) {
return find(s, type, (String[]) null, null);
}
/**
* @hide
*/
public static SliceItem find(SliceItem s, int type, String hints, String nonHints) {
return find(s, type, new String[]{ hints }, new String[]{ nonHints });
}
/**
* @hide
*/
public static SliceItem find(Slice s, int type, String[] hints, String[] nonHints) {
List<String> h = s.getHints();
return find(new SliceItem(s, SliceItem.TYPE_SLICE, h.toArray(new String[h.size()])), type,
hints, nonHints);
}
/**
* @hide
*/
public static SliceItem find(SliceItem s, int type, String[] hints, String[] nonHints) {
return stream(s).filter(item -> (item.getType() == type || type == -1)
&& (item.hasHints(hints) && !item.hasAnyHints(nonHints))).findFirst().orElse(null);
}
/**
* @hide
*/
public static Stream<SliceItem> stream(SliceItem slice) {
Queue<SliceItem> items = new LinkedList();
items.add(slice);
Iterator<SliceItem> iterator = new Iterator<SliceItem>() {
@Override
public boolean hasNext() {
return items.size() != 0;
}
@Override
public SliceItem next() {
SliceItem item = items.poll();
if (item.getType() == SliceItem.TYPE_SLICE
|| item.getType() == SliceItem.TYPE_ACTION) {
items.addAll(item.getSlice().getItems());
}
return item;
}
};
return StreamSupport.stream(Spliterators.spliteratorUnknownSize(iterator, 0), false);
}
}
|
