Tony Mantler | e43853c | 2015-10-09 14:37:32 -0700 | [diff] [blame] | 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.settingslib.dream; |
| 18 | |
| 19 | import android.content.ComponentName; |
| 20 | import android.content.Context; |
| 21 | import android.content.Intent; |
| 22 | import android.content.pm.PackageManager; |
| 23 | import android.content.pm.ResolveInfo; |
| 24 | import android.content.pm.ServiceInfo; |
| 25 | import android.content.res.Resources; |
| 26 | import android.content.res.TypedArray; |
| 27 | import android.content.res.XmlResourceParser; |
| 28 | import android.graphics.drawable.Drawable; |
| 29 | import android.os.RemoteException; |
| 30 | import android.os.ServiceManager; |
| 31 | import android.provider.Settings; |
| 32 | import android.service.dreams.DreamService; |
| 33 | import android.service.dreams.IDreamManager; |
| 34 | import android.util.AttributeSet; |
| 35 | import android.util.Log; |
| 36 | import android.util.Xml; |
| 37 | |
| 38 | import org.xmlpull.v1.XmlPullParser; |
| 39 | import org.xmlpull.v1.XmlPullParserException; |
| 40 | |
| 41 | import java.io.IOException; |
| 42 | import java.util.ArrayList; |
| 43 | import java.util.Collections; |
| 44 | import java.util.Comparator; |
| 45 | import java.util.List; |
| 46 | |
| 47 | public class DreamBackend { |
| 48 | private static final String TAG = "DreamBackend"; |
| 49 | private static final boolean DEBUG = false; |
| 50 | |
| 51 | public static class DreamInfo { |
| 52 | public CharSequence caption; |
| 53 | public Drawable icon; |
| 54 | public boolean isActive; |
| 55 | public ComponentName componentName; |
| 56 | public ComponentName settingsComponentName; |
| 57 | |
| 58 | @Override |
| 59 | public String toString() { |
| 60 | StringBuilder sb = new StringBuilder(DreamInfo.class.getSimpleName()); |
| 61 | sb.append('[').append(caption); |
| 62 | if (isActive) |
| 63 | sb.append(",active"); |
| 64 | sb.append(',').append(componentName); |
| 65 | if (settingsComponentName != null) |
| 66 | sb.append("settings=").append(settingsComponentName); |
| 67 | return sb.append(']').toString(); |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | private final Context mContext; |
| 72 | private final IDreamManager mDreamManager; |
| 73 | private final DreamInfoComparator mComparator; |
| 74 | private final boolean mDreamsEnabledByDefault; |
| 75 | private final boolean mDreamsActivatedOnSleepByDefault; |
| 76 | private final boolean mDreamsActivatedOnDockByDefault; |
| 77 | |
| 78 | public DreamBackend(Context context) { |
| 79 | mContext = context; |
| 80 | mDreamManager = IDreamManager.Stub.asInterface( |
| 81 | ServiceManager.getService(DreamService.DREAM_SERVICE)); |
| 82 | mComparator = new DreamInfoComparator(getDefaultDream()); |
| 83 | mDreamsEnabledByDefault = context.getResources() |
| 84 | .getBoolean(com.android.internal.R.bool.config_dreamsEnabledByDefault); |
| 85 | mDreamsActivatedOnSleepByDefault = context.getResources() |
| 86 | .getBoolean(com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); |
| 87 | mDreamsActivatedOnDockByDefault = context.getResources() |
| 88 | .getBoolean(com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); |
| 89 | } |
| 90 | |
| 91 | public List<DreamInfo> getDreamInfos() { |
| 92 | logd("getDreamInfos()"); |
| 93 | ComponentName activeDream = getActiveDream(); |
| 94 | PackageManager pm = mContext.getPackageManager(); |
| 95 | Intent dreamIntent = new Intent(DreamService.SERVICE_INTERFACE); |
| 96 | List<ResolveInfo> resolveInfos = pm.queryIntentServices(dreamIntent, |
| 97 | PackageManager.GET_META_DATA); |
| 98 | List<DreamInfo> dreamInfos = new ArrayList<>(resolveInfos.size()); |
| 99 | for (ResolveInfo resolveInfo : resolveInfos) { |
| 100 | if (resolveInfo.serviceInfo == null) |
| 101 | continue; |
| 102 | DreamInfo dreamInfo = new DreamInfo(); |
| 103 | dreamInfo.caption = resolveInfo.loadLabel(pm); |
| 104 | dreamInfo.icon = resolveInfo.loadIcon(pm); |
| 105 | dreamInfo.componentName = getDreamComponentName(resolveInfo); |
| 106 | dreamInfo.isActive = dreamInfo.componentName.equals(activeDream); |
| 107 | dreamInfo.settingsComponentName = getSettingsComponentName(pm, resolveInfo); |
| 108 | dreamInfos.add(dreamInfo); |
| 109 | } |
| 110 | Collections.sort(dreamInfos, mComparator); |
| 111 | return dreamInfos; |
| 112 | } |
| 113 | |
| 114 | public ComponentName getDefaultDream() { |
| 115 | if (mDreamManager == null) |
| 116 | return null; |
| 117 | try { |
| 118 | return mDreamManager.getDefaultDreamComponent(); |
| 119 | } catch (RemoteException e) { |
| 120 | Log.w(TAG, "Failed to get default dream", e); |
| 121 | return null; |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | public CharSequence getActiveDreamName() { |
| 126 | ComponentName cn = getActiveDream(); |
| 127 | if (cn != null) { |
| 128 | PackageManager pm = mContext.getPackageManager(); |
| 129 | try { |
| 130 | ServiceInfo ri = pm.getServiceInfo(cn, 0); |
| 131 | if (ri != null) { |
| 132 | return ri.loadLabel(pm); |
| 133 | } |
| 134 | } catch (PackageManager.NameNotFoundException exc) { |
| 135 | return null; // uninstalled? |
| 136 | } |
| 137 | } |
| 138 | return null; |
| 139 | } |
| 140 | |
| 141 | public boolean isEnabled() { |
| 142 | return getBoolean(Settings.Secure.SCREENSAVER_ENABLED, mDreamsEnabledByDefault); |
| 143 | } |
| 144 | |
| 145 | public void setEnabled(boolean value) { |
| 146 | logd("setEnabled(%s)", value); |
| 147 | setBoolean(Settings.Secure.SCREENSAVER_ENABLED, value); |
| 148 | } |
| 149 | |
| 150 | public boolean isActivatedOnDock() { |
| 151 | return getBoolean(Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, |
| 152 | mDreamsActivatedOnDockByDefault); |
| 153 | } |
| 154 | |
| 155 | public void setActivatedOnDock(boolean value) { |
| 156 | logd("setActivatedOnDock(%s)", value); |
| 157 | setBoolean(Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, value); |
| 158 | } |
| 159 | |
| 160 | public boolean isActivatedOnSleep() { |
| 161 | return getBoolean(Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, |
| 162 | mDreamsActivatedOnSleepByDefault); |
| 163 | } |
| 164 | |
| 165 | public void setActivatedOnSleep(boolean value) { |
| 166 | logd("setActivatedOnSleep(%s)", value); |
| 167 | setBoolean(Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, value); |
| 168 | } |
| 169 | |
| 170 | private boolean getBoolean(String key, boolean def) { |
| 171 | return Settings.Secure.getInt(mContext.getContentResolver(), key, def ? 1 : 0) == 1; |
| 172 | } |
| 173 | |
| 174 | private void setBoolean(String key, boolean value) { |
| 175 | Settings.Secure.putInt(mContext.getContentResolver(), key, value ? 1 : 0); |
| 176 | } |
| 177 | |
| 178 | public void setActiveDream(ComponentName dream) { |
| 179 | logd("setActiveDream(%s)", dream); |
| 180 | if (mDreamManager == null) |
| 181 | return; |
| 182 | try { |
| 183 | ComponentName[] dreams = { dream }; |
| 184 | mDreamManager.setDreamComponents(dream == null ? null : dreams); |
| 185 | } catch (RemoteException e) { |
| 186 | Log.w(TAG, "Failed to set active dream to " + dream, e); |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | public ComponentName getActiveDream() { |
| 191 | if (mDreamManager == null) |
| 192 | return null; |
| 193 | try { |
| 194 | ComponentName[] dreams = mDreamManager.getDreamComponents(); |
| 195 | return dreams != null && dreams.length > 0 ? dreams[0] : null; |
| 196 | } catch (RemoteException e) { |
| 197 | Log.w(TAG, "Failed to get active dream", e); |
| 198 | return null; |
| 199 | } |
| 200 | } |
| 201 | |
| 202 | public void launchSettings(DreamInfo dreamInfo) { |
| 203 | logd("launchSettings(%s)", dreamInfo); |
| 204 | if (dreamInfo == null || dreamInfo.settingsComponentName == null) |
| 205 | return; |
| 206 | mContext.startActivity(new Intent().setComponent(dreamInfo.settingsComponentName)); |
| 207 | } |
| 208 | |
| 209 | public void preview(DreamInfo dreamInfo) { |
| 210 | logd("preview(%s)", dreamInfo); |
| 211 | if (mDreamManager == null || dreamInfo == null || dreamInfo.componentName == null) |
| 212 | return; |
| 213 | try { |
| 214 | mDreamManager.testDream(dreamInfo.componentName); |
| 215 | } catch (RemoteException e) { |
| 216 | Log.w(TAG, "Failed to preview " + dreamInfo, e); |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | public void startDreaming() { |
| 221 | logd("startDreaming()"); |
| 222 | if (mDreamManager == null) |
| 223 | return; |
| 224 | try { |
| 225 | mDreamManager.dream(); |
| 226 | } catch (RemoteException e) { |
| 227 | Log.w(TAG, "Failed to dream", e); |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | private static ComponentName getDreamComponentName(ResolveInfo resolveInfo) { |
| 232 | if (resolveInfo == null || resolveInfo.serviceInfo == null) |
| 233 | return null; |
| 234 | return new ComponentName(resolveInfo.serviceInfo.packageName, resolveInfo.serviceInfo.name); |
| 235 | } |
| 236 | |
| 237 | private static ComponentName getSettingsComponentName(PackageManager pm, ResolveInfo resolveInfo) { |
| 238 | if (resolveInfo == null |
| 239 | || resolveInfo.serviceInfo == null |
| 240 | || resolveInfo.serviceInfo.metaData == null) |
| 241 | return null; |
| 242 | String cn = null; |
| 243 | XmlResourceParser parser = null; |
| 244 | Exception caughtException = null; |
| 245 | try { |
| 246 | parser = resolveInfo.serviceInfo.loadXmlMetaData(pm, DreamService.DREAM_META_DATA); |
| 247 | if (parser == null) { |
| 248 | Log.w(TAG, "No " + DreamService.DREAM_META_DATA + " meta-data"); |
| 249 | return null; |
| 250 | } |
| 251 | Resources res = pm.getResourcesForApplication(resolveInfo.serviceInfo.applicationInfo); |
| 252 | AttributeSet attrs = Xml.asAttributeSet(parser); |
| 253 | int type; |
| 254 | while ((type=parser.next()) != XmlPullParser.END_DOCUMENT |
| 255 | && type != XmlPullParser.START_TAG) { |
| 256 | } |
| 257 | String nodeName = parser.getName(); |
| 258 | if (!"dream".equals(nodeName)) { |
| 259 | Log.w(TAG, "Meta-data does not start with dream tag"); |
| 260 | return null; |
| 261 | } |
| 262 | TypedArray sa = res.obtainAttributes(attrs, com.android.internal.R.styleable.Dream); |
| 263 | cn = sa.getString(com.android.internal.R.styleable.Dream_settingsActivity); |
| 264 | sa.recycle(); |
| 265 | } catch (PackageManager.NameNotFoundException|IOException|XmlPullParserException e) { |
| 266 | caughtException = e; |
| 267 | } finally { |
| 268 | if (parser != null) parser.close(); |
| 269 | } |
| 270 | if (caughtException != null) { |
| 271 | Log.w(TAG, "Error parsing : " + resolveInfo.serviceInfo.packageName, caughtException); |
| 272 | return null; |
| 273 | } |
| 274 | if (cn != null && cn.indexOf('/') < 0) { |
| 275 | cn = resolveInfo.serviceInfo.packageName + "/" + cn; |
| 276 | } |
| 277 | return cn == null ? null : ComponentName.unflattenFromString(cn); |
| 278 | } |
| 279 | |
| 280 | private static void logd(String msg, Object... args) { |
| 281 | if (DEBUG) |
| 282 | Log.d(TAG, args == null || args.length == 0 ? msg : String.format(msg, args)); |
| 283 | } |
| 284 | |
| 285 | private static class DreamInfoComparator implements Comparator<DreamInfo> { |
| 286 | private final ComponentName mDefaultDream; |
| 287 | |
| 288 | public DreamInfoComparator(ComponentName defaultDream) { |
| 289 | mDefaultDream = defaultDream; |
| 290 | } |
| 291 | |
| 292 | @Override |
| 293 | public int compare(DreamInfo lhs, DreamInfo rhs) { |
| 294 | return sortKey(lhs).compareTo(sortKey(rhs)); |
| 295 | } |
| 296 | |
| 297 | private String sortKey(DreamInfo di) { |
| 298 | StringBuilder sb = new StringBuilder(); |
| 299 | sb.append(di.componentName.equals(mDefaultDream) ? '0' : '1'); |
| 300 | sb.append(di.caption); |
| 301 | return sb.toString(); |
| 302 | } |
| 303 | } |
| 304 | } |