Helper.java revision 9a2e6058df51e94417dcedd4c7dd2a0cc380dcb1 
1/*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.server.autofill;
18
19import android.annotation.NonNull;
20import android.app.assist.AssistStructure;
21import android.app.assist.AssistStructure.ViewNode;
22import android.os.Bundle;
23import android.util.DebugUtils;
24import android.view.autofill.AutofillId;
25import android.view.autofill.AutofillManager;
26
27import java.util.Arrays;
28import java.util.Objects;
29import java.util.Set;
30
31public final class Helper {
32
33    /**
34     * Defines a logging flag that can be dynamically changed at runtime using
35     * {@code cmd autofill debug [on|off]}.
36     */
37    public static boolean sDebug = false;
38
39    /**
40     * Defines a logging flag that can be dynamically changed at runtime using
41     * {@code cmd autofill verbose [on|off]}.
42     */
43    public static boolean sVerbose = false;
44
45    private Helper() {
46        throw new UnsupportedOperationException("contains static members only");
47    }
48
49    static void append(StringBuilder builder, Bundle bundle) {
50        if (bundle == null || !sVerbose) {
51            builder.append("null");
52            return;
53        }
54        final Set<String> keySet = bundle.keySet();
55        builder.append("[Bundle with ").append(keySet.size()).append(" extras:");
56        for (String key : keySet) {
57            final Object value = bundle.get(key);
58            builder.append(' ').append(key).append('=');
59            builder.append((value instanceof Object[])
60                    ? Arrays.toString((Objects[]) value) : value);
61        }
62        builder.append(']');
63    }
64
65    static String bundleToString(Bundle bundle) {
66        final StringBuilder builder = new StringBuilder();
67        append(builder, bundle);
68        return builder.toString();
69    }
70
71    static String getUpdateActionAsString(int action) {
72        return DebugUtils.flagsToString(AutofillManager.class, "ACTION_", action);
73    }
74
75    static ViewNode findViewNodeById(@NonNull AssistStructure structure, @NonNull AutofillId id) {
76        final int size = structure.getWindowNodeCount();
77        for (int i = 0; i < size; i++) {
78            final AssistStructure.WindowNode window = structure.getWindowNodeAt(i);
79            final ViewNode root = window.getRootViewNode();
80            if (id.equals(root.getAutofillId())) {
81                return root;
82            }
83            final ViewNode child = findViewNodeById(root, id);
84            if (child != null) {
85                return child;
86            }
87        }
88        return null;
89    }
90
91    static ViewNode findViewNodeById(@NonNull ViewNode parent, @NonNull AutofillId id) {
92        final int childrenSize = parent.getChildCount();
93        if (childrenSize > 0) {
94            for (int i = 0; i < childrenSize; i++) {
95                final ViewNode child = parent.getChildAt(i);
96                if (id.equals(child.getAutofillId())) {
97                    return child;
98                }
99                final ViewNode grandChild = findViewNodeById(child, id);
100                if (grandChild != null && id.equals(grandChild.getAutofillId())) {
101                    return grandChild;
102                }
103            }
104        }
105        return null;
106    }
107}
108