1 /*
2  * Copyright (C) 2015 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 
17 package com.android.settings.deviceinfo;
18 
19 import android.content.Context;
20 import android.content.res.ColorStateList;
21 import android.graphics.Color;
22 import android.graphics.drawable.Drawable;
23 import android.os.storage.StorageManager;
24 import android.os.storage.VolumeInfo;
25 import android.support.v7.preference.Preference;
26 import android.support.v7.preference.PreferenceViewHolder;
27 import android.text.format.Formatter;
28 import android.view.View;
29 import android.view.View.OnClickListener;
30 import android.widget.ImageView;
31 import android.widget.ProgressBar;
32 
33 import com.android.settings.R;
34 import com.android.settings.deviceinfo.StorageSettings.UnmountTask;
35 
36 import java.io.File;
37 
38 /**
39  * Preference line representing a single {@link VolumeInfo}, possibly including
40  * quick actions like unmounting.
41  */
42 public class StorageVolumePreference extends Preference {
43     private final StorageManager mStorageManager;
44     private final VolumeInfo mVolume;
45 
46     private int mColor;
47     private int mUsedPercent = -1;
48 
StorageVolumePreference(Context context, VolumeInfo volume, int color)49     public StorageVolumePreference(Context context, VolumeInfo volume, int color) {
50         super(context);
51 
52         mStorageManager = context.getSystemService(StorageManager.class);
53         mVolume = volume;
54         mColor = color;
55 
56         setLayoutResource(R.layout.storage_volume);
57 
58         setKey(volume.getId());
59         setTitle(mStorageManager.getBestVolumeDescription(volume));
60 
61         Drawable icon;
62         if (VolumeInfo.ID_PRIVATE_INTERNAL.equals(volume.getId())) {
63             icon = context.getDrawable(R.drawable.ic_settings_storage);
64         } else {
65             icon = context.getDrawable(R.drawable.ic_sim_sd);
66         }
67 
68         if (volume.isMountedReadable()) {
69             // TODO: move statfs() to background thread
70             final File path = volume.getPath();
71             final long freeBytes = path.getFreeSpace();
72             final long totalBytes = path.getTotalSpace();
73             final long usedBytes = totalBytes - freeBytes;
74 
75             final String used = Formatter.formatFileSize(context, usedBytes);
76             final String total = Formatter.formatFileSize(context, totalBytes);
77             setSummary(context.getString(R.string.storage_volume_summary, used, total));
78             if (totalBytes > 0) {
79                 mUsedPercent = (int) ((usedBytes * 100) / totalBytes);
80             }
81 
82             if (freeBytes < mStorageManager.getStorageLowBytes(path)) {
83                 mColor = StorageSettings.COLOR_WARNING;
84                 icon = context.getDrawable(R.drawable.ic_warning_24dp);
85             }
86 
87         } else {
88             setSummary(volume.getStateDescription());
89             mUsedPercent = -1;
90         }
91 
92         icon.mutate();
93         icon.setTint(mColor);
94         setIcon(icon);
95 
96         if (volume.getType() == VolumeInfo.TYPE_PUBLIC
97                 && volume.isMountedReadable()) {
98             setWidgetLayoutResource(R.layout.preference_storage_action);
99         }
100     }
101 
102     @Override
onBindViewHolder(PreferenceViewHolder view)103     public void onBindViewHolder(PreferenceViewHolder view) {
104         final ImageView unmount = (ImageView) view.findViewById(R.id.unmount);
105         if (unmount != null) {
106             unmount.setImageTintList(ColorStateList.valueOf(Color.parseColor("#8a000000")));
107             unmount.setOnClickListener(mUnmountListener);
108         }
109 
110         final ProgressBar progress = (ProgressBar) view.findViewById(android.R.id.progress);
111         if (mVolume.getType() == VolumeInfo.TYPE_PRIVATE && mUsedPercent != -1) {
112             progress.setVisibility(View.VISIBLE);
113             progress.setProgress(mUsedPercent);
114             progress.setProgressTintList(ColorStateList.valueOf(mColor));
115         } else {
116             progress.setVisibility(View.GONE);
117         }
118 
119         super.onBindViewHolder(view);
120     }
121 
122     private final View.OnClickListener mUnmountListener = new OnClickListener() {
123         @Override
124         public void onClick(View v) {
125             new UnmountTask(getContext(), mVolume).execute();
126         }
127     };
128 }
129