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 package com.android.server.usb.descriptors.tree;
17 
18 import com.android.server.usb.descriptors.UsbDeviceDescriptor;
19 import com.android.server.usb.descriptors.report.ReportCanvas;
20 
21 import java.util.ArrayList;
22 
23 /**
24  * @hide
25  * A class to contain THE device descriptor at the root of the tree.
26  */
27 public final class UsbDescriptorsDeviceNode extends UsbDescriptorsTreeNode {
28     private static final String TAG = "UsbDescriptorsDeviceNode";
29 
30     private final UsbDeviceDescriptor mDeviceDescriptor;
31 
32     private final ArrayList<UsbDescriptorsConfigNode> mConfigNodes = new ArrayList<>();
33 
34     /**
35      * Constructor.
36      * @param deviceDescriptor   The Device Descriptor object wrapped by this tree node.
37      */
UsbDescriptorsDeviceNode(UsbDeviceDescriptor deviceDescriptor)38     public UsbDescriptorsDeviceNode(UsbDeviceDescriptor deviceDescriptor) {
39         mDeviceDescriptor = deviceDescriptor;
40     }
41 
42     /**
43      * Adds a Configuration node to the assocated device node.
44      */
addConfigDescriptorNode(UsbDescriptorsConfigNode configNode)45     public void addConfigDescriptorNode(UsbDescriptorsConfigNode configNode) {
46         mConfigNodes.add(configNode);
47     }
48 
49     @Override
report(ReportCanvas canvas)50     public void report(ReportCanvas canvas) {
51         mDeviceDescriptor.report(canvas);
52         for (UsbDescriptorsConfigNode node : mConfigNodes) {
53             node.report(canvas);
54         }
55     }
56 }
57