Merge "Move DreamBackend to SettingsLib"

1 files changed, 304 insertions, 0 deletions

diff --git a/packages/SettingsLib/src/com/android/settingslib/dream/DreamBackend.java b/packages/SettingsLib/src/com/android/settingslib/dream/DreamBackend.java
new file mode 100644
index 000000000000..e5cdc85a48d9
--- /dev/null
+++ b/packages/SettingsLib/src/com/android/settingslib/dream/DreamBackend.java
@@ -0,0 +1,304 @@
+/*
+ * Copyright (C) 2015 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 com.android.settingslib.dream;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.content.pm.ServiceInfo;
+import android.content.res.Resources;
+import android.content.res.TypedArray;
+import android.content.res.XmlResourceParser;
+import android.graphics.drawable.Drawable;
+import android.os.RemoteException;
+import android.os.ServiceManager;
+import android.provider.Settings;
+import android.service.dreams.DreamService;
+import android.service.dreams.IDreamManager;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.util.Xml;
+
+import org.xmlpull.v1.XmlPullParser;
+import org.xmlpull.v1.XmlPullParserException;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
+
+public class DreamBackend {
+    private static final String TAG = "DreamBackend";
+    private static final boolean DEBUG = false;
+
+    public static class DreamInfo {
+        public CharSequence caption;
+        public Drawable icon;
+        public boolean isActive;
+        public ComponentName componentName;
+        public ComponentName settingsComponentName;
+
+        @Override
+        public String toString() {
+            StringBuilder sb = new StringBuilder(DreamInfo.class.getSimpleName());
+            sb.append('[').append(caption);
+            if (isActive)
+                sb.append(",active");
+            sb.append(',').append(componentName);
+            if (settingsComponentName != null)
+                sb.append("settings=").append(settingsComponentName);
+            return sb.append(']').toString();
+        }
+    }
+
+    private final Context mContext;
+    private final IDreamManager mDreamManager;
+    private final DreamInfoComparator mComparator;
+    private final boolean mDreamsEnabledByDefault;
+    private final boolean mDreamsActivatedOnSleepByDefault;
+    private final boolean mDreamsActivatedOnDockByDefault;
+
+    public DreamBackend(Context context) {
+        mContext = context;
+        mDreamManager = IDreamManager.Stub.asInterface(
+                ServiceManager.getService(DreamService.DREAM_SERVICE));
+        mComparator = new DreamInfoComparator(getDefaultDream());
+        mDreamsEnabledByDefault = context.getResources()
+                .getBoolean(com.android.internal.R.bool.config_dreamsEnabledByDefault);
+        mDreamsActivatedOnSleepByDefault = context.getResources()
+                .getBoolean(com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault);
+        mDreamsActivatedOnDockByDefault = context.getResources()
+                .getBoolean(com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault);
+    }
+
+    public List<DreamInfo> getDreamInfos() {
+        logd("getDreamInfos()");
+        ComponentName activeDream = getActiveDream();
+        PackageManager pm = mContext.getPackageManager();
+        Intent dreamIntent = new Intent(DreamService.SERVICE_INTERFACE);
+        List<ResolveInfo> resolveInfos = pm.queryIntentServices(dreamIntent,
+                PackageManager.GET_META_DATA);
+        List<DreamInfo> dreamInfos = new ArrayList<>(resolveInfos.size());
+        for (ResolveInfo resolveInfo : resolveInfos) {
+            if (resolveInfo.serviceInfo == null)
+                continue;
+            DreamInfo dreamInfo = new DreamInfo();
+            dreamInfo.caption = resolveInfo.loadLabel(pm);
+            dreamInfo.icon = resolveInfo.loadIcon(pm);
+            dreamInfo.componentName = getDreamComponentName(resolveInfo);
+            dreamInfo.isActive = dreamInfo.componentName.equals(activeDream);
+            dreamInfo.settingsComponentName = getSettingsComponentName(pm, resolveInfo);
+            dreamInfos.add(dreamInfo);
+        }
+        Collections.sort(dreamInfos, mComparator);
+        return dreamInfos;
+    }
+
+    public ComponentName getDefaultDream() {
+        if (mDreamManager == null)
+            return null;
+        try {
+            return mDreamManager.getDefaultDreamComponent();
+        } catch (RemoteException e) {
+            Log.w(TAG, "Failed to get default dream", e);
+            return null;
+        }
+    }
+
+    public CharSequence getActiveDreamName() {
+        ComponentName cn = getActiveDream();
+        if (cn != null) {
+            PackageManager pm = mContext.getPackageManager();
+            try {
+                ServiceInfo ri = pm.getServiceInfo(cn, 0);
+                if (ri != null) {
+                    return ri.loadLabel(pm);
+                }
+            } catch (PackageManager.NameNotFoundException exc) {
+                return null; // uninstalled?
+            }
+        }
+        return null;
+    }
+
+    public boolean isEnabled() {
+        return getBoolean(Settings.Secure.SCREENSAVER_ENABLED, mDreamsEnabledByDefault);
+    }
+
+    public void setEnabled(boolean value) {
+        logd("setEnabled(%s)", value);
+        setBoolean(Settings.Secure.SCREENSAVER_ENABLED, value);
+    }
+
+    public boolean isActivatedOnDock() {
+        return getBoolean(Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK,
+                mDreamsActivatedOnDockByDefault);
+    }
+
+    public void setActivatedOnDock(boolean value) {
+        logd("setActivatedOnDock(%s)", value);
+        setBoolean(Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, value);
+    }
+
+    public boolean isActivatedOnSleep() {
+        return getBoolean(Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP,
+                mDreamsActivatedOnSleepByDefault);
+    }
+
+    public void setActivatedOnSleep(boolean value) {
+        logd("setActivatedOnSleep(%s)", value);
+        setBoolean(Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, value);
+    }
+
+    private boolean getBoolean(String key, boolean def) {
+        return Settings.Secure.getInt(mContext.getContentResolver(), key, def ? 1 : 0) == 1;
+    }
+
+    private void setBoolean(String key, boolean value) {
+        Settings.Secure.putInt(mContext.getContentResolver(), key, value ? 1 : 0);
+    }
+
+    public void setActiveDream(ComponentName dream) {
+        logd("setActiveDream(%s)", dream);
+        if (mDreamManager == null)
+            return;
+        try {
+            ComponentName[] dreams = { dream };
+            mDreamManager.setDreamComponents(dream == null ? null : dreams);
+        } catch (RemoteException e) {
+            Log.w(TAG, "Failed to set active dream to " + dream, e);
+        }
+    }
+
+    public ComponentName getActiveDream() {
+        if (mDreamManager == null)
+            return null;
+        try {
+            ComponentName[] dreams = mDreamManager.getDreamComponents();
+            return dreams != null && dreams.length > 0 ? dreams[0] : null;
+        } catch (RemoteException e) {
+            Log.w(TAG, "Failed to get active dream", e);
+            return null;
+        }
+    }
+
+    public void launchSettings(DreamInfo dreamInfo) {
+        logd("launchSettings(%s)", dreamInfo);
+        if (dreamInfo == null || dreamInfo.settingsComponentName == null)
+            return;
+        mContext.startActivity(new Intent().setComponent(dreamInfo.settingsComponentName));
+    }
+
+    public void preview(DreamInfo dreamInfo) {
+        logd("preview(%s)", dreamInfo);
+        if (mDreamManager == null || dreamInfo == null || dreamInfo.componentName == null)
+            return;
+        try {
+            mDreamManager.testDream(dreamInfo.componentName);
+        } catch (RemoteException e) {
+            Log.w(TAG, "Failed to preview " + dreamInfo, e);
+        }
+    }
+
+    public void startDreaming() {
+        logd("startDreaming()");
+        if (mDreamManager == null)
+            return;
+        try {
+            mDreamManager.dream();
+        } catch (RemoteException e) {
+            Log.w(TAG, "Failed to dream", e);
+        }
+    }
+
+    private static ComponentName getDreamComponentName(ResolveInfo resolveInfo) {
+        if (resolveInfo == null || resolveInfo.serviceInfo == null)
+            return null;
+        return new ComponentName(resolveInfo.serviceInfo.packageName, resolveInfo.serviceInfo.name);
+    }
+
+    private static ComponentName getSettingsComponentName(PackageManager pm, ResolveInfo resolveInfo) {
+        if (resolveInfo == null
+                || resolveInfo.serviceInfo == null
+                || resolveInfo.serviceInfo.metaData == null)
+            return null;
+        String cn = null;
+        XmlResourceParser parser = null;
+        Exception caughtException = null;
+        try {
+            parser = resolveInfo.serviceInfo.loadXmlMetaData(pm, DreamService.DREAM_META_DATA);
+            if (parser == null) {
+                Log.w(TAG, "No " + DreamService.DREAM_META_DATA + " meta-data");
+                return null;
+            }
+            Resources res = pm.getResourcesForApplication(resolveInfo.serviceInfo.applicationInfo);
+            AttributeSet attrs = Xml.asAttributeSet(parser);
+            int type;
+            while ((type=parser.next()) != XmlPullParser.END_DOCUMENT
+                    && type != XmlPullParser.START_TAG) {
+            }
+            String nodeName = parser.getName();
+            if (!"dream".equals(nodeName)) {
+                Log.w(TAG, "Meta-data does not start with dream tag");
+                return null;
+            }
+            TypedArray sa = res.obtainAttributes(attrs, com.android.internal.R.styleable.Dream);
+            cn = sa.getString(com.android.internal.R.styleable.Dream_settingsActivity);
+            sa.recycle();
+        } catch (PackageManager.NameNotFoundException|IOException|XmlPullParserException e) {
+            caughtException = e;
+        } finally {
+            if (parser != null) parser.close();
+        }
+        if (caughtException != null) {
+            Log.w(TAG, "Error parsing : " + resolveInfo.serviceInfo.packageName, caughtException);
+            return null;
+        }
+        if (cn != null && cn.indexOf('/') < 0) {
+            cn = resolveInfo.serviceInfo.packageName + "/" + cn;
+        }
+        return cn == null ? null : ComponentName.unflattenFromString(cn);
+    }
+
+    private static void logd(String msg, Object... args) {
+        if (DEBUG)
+            Log.d(TAG, args == null || args.length == 0 ? msg : String.format(msg, args));
+    }
+
+    private static class DreamInfoComparator implements Comparator<DreamInfo> {
+        private final ComponentName mDefaultDream;
+
+        public DreamInfoComparator(ComponentName defaultDream) {
+            mDefaultDream = defaultDream;
+        }
+
+        @Override
+        public int compare(DreamInfo lhs, DreamInfo rhs) {
+            return sortKey(lhs).compareTo(sortKey(rhs));
+        }
+
+        private String sortKey(DreamInfo di) {
+            StringBuilder sb = new StringBuilder();
+            sb.append(di.componentName.equals(mDefaultDream) ? '0' : '1');
+            sb.append(di.caption);
+            return sb.toString();
+        }
+    }
+}