SystemUI: Add battery saver tile (1/2)

* To be displayed on devices without perf profiles

Change-Id: Iff6920a0bb78e36e44590c1db880afcdcc6f78b3

2 files changed, 120 insertions, 0 deletions

diff --git a/packages/SystemUI/src/com/android/systemui/qs/tiles/BatterySaverTile.java b/packages/SystemUI/src/com/android/systemui/qs/tiles/BatterySaverTile.java
new file mode 100644
index 0000000..37d8d73
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/qs/tiles/BatterySaverTile.java
@@ -0,0 +1,116 @@
+/*
+ * Copyright (C) 2015 The CyanogenMod 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.systemui.qs.tiles;
+
+import android.content.Context;
+import android.content.Intent;
+import android.database.ContentObserver;
+import android.net.Uri;
+import android.os.PowerManager;
+import android.provider.Settings;
+
+import com.android.systemui.qs.QSTile;
+import com.android.systemui.R;
+
+import cyanogenmod.power.PerformanceManager;
+
+import org.cyanogenmod.internal.logging.CMMetricsLogger;
+
+/** Quick settings tile: Battery saver **/
+public class BatterySaverTile extends QSTile<QSTile.BooleanState> {
+
+    private static final Intent BATTERY_SETTINGS = new Intent(Intent.ACTION_POWER_USAGE_SUMMARY);
+
+    private final PowerManager mPm;
+    private final PerformanceManager mPerformanceManager;
+    private boolean mListening;
+
+    public BatterySaverTile(Host host) {
+        super(host);
+        mPm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
+        mPerformanceManager = PerformanceManager.getInstance(mContext);
+    }
+
+    @Override
+    protected BooleanState newTileState() {
+        return new BooleanState();
+    }
+
+    @Override
+    public void handleClick() {
+        mPm.setPowerSaveMode(!mState.value);
+        refreshState();
+    }
+
+    @Override
+    public void handleLongClick() {
+        mHost.startActivityDismissingKeyguard(BATTERY_SETTINGS);
+    }
+
+    @Override
+    protected void handleUpdateState(BooleanState state, Object arg) {
+        state.value = mPm.isPowerSaveMode();
+        state.visible = mPerformanceManager.getNumberOfProfiles() == 0;
+        state.label = mContext.getString(R.string.quick_settings_battery_saver_label);
+        if (state.value) {
+            state.icon = ResourceIcon.get(R.drawable.ic_qs_battery_saver_on);
+            state.contentDescription =  mContext.getString(
+                    R.string.accessibility_quick_settings_battery_saver_on);
+        } else {
+            state.icon = ResourceIcon.get(R.drawable.ic_qs_battery_saver_off);
+            state.contentDescription =  mContext.getString(
+                    R.string.accessibility_quick_settings_battery_saver_off);
+        }
+    }
+
+    @Override
+    protected String composeChangeAnnouncement() {
+        if (mState.value) {
+            return mContext.getString(
+                    R.string.accessibility_quick_settings_battery_saver_changed_on);
+        } else {
+            return mContext.getString(
+                    R.string.accessibility_quick_settings_battery_saver_changed_off);
+        }
+    }
+
+    @Override
+    public int getMetricsCategory() {
+        return CMMetricsLogger.TILE_BATTERY_SAVER;
+    }
+
+    private ContentObserver mObserver = new ContentObserver(mHandler) {
+        @Override
+        public void onChange(boolean selfChange, Uri uri) {
+            refreshState();
+        }
+    };
+
+    @Override
+    public void setListening(boolean listening) {
+        if (mListening == listening) return;
+        mListening = listening;
+
+        if (listening) {
+            mContext.getContentResolver().registerContentObserver(
+                    Settings.Global.getUriFor(Settings.Global.LOW_POWER_MODE),
+                    false, mObserver);
+        } else {
+            mContext.getContentResolver().unregisterContentObserver(mObserver);
+        }
+    }
+}
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/QSTileHost.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/QSTileHost.java
index 76f55ce..0e6382a 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/QSTileHost.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/QSTileHost.java
@@ -40,6 +40,7 @@ import com.android.systemui.qs.QSTile;
 import com.android.systemui.qs.tiles.AdbOverNetworkTile;
 import com.android.systemui.qs.tiles.AirplaneModeTile;
 import com.android.systemui.qs.tiles.AmbientDisplayTile;
+import com.android.systemui.qs.tiles.BatterySaverTile;
 import com.android.systemui.qs.tiles.BluetoothTile;
 import com.android.systemui.qs.tiles.CastTile;
 import com.android.systemui.qs.tiles.CellularTile;
@@ -361,6 +362,7 @@ public class QSTileHost implements QSTile.Host, Tunable {
         else if (tileSpec.equals("ambient_display")) return new AmbientDisplayTile(this);
         else if (tileSpec.equals("live_display")) return new LiveDisplayTile(this);
         else if (tileSpec.equals("heads_up")) return new HeadsUpTile(this);
+        else if (tileSpec.equals("battery_saver")) return new BatterySaverTile(this);
         else if (tileSpec.startsWith(IntentTile.PREFIX)) return IntentTile.create(this,tileSpec);
         else throw new IllegalArgumentException("Bad tile spec: " + tileSpec);
     }
@@ -448,6 +450,7 @@ public class QSTileHost implements QSTile.Host, Tunable {
         else if (spec.equals("ambient_display")) return R.string.quick_settings_ambient_display_label;
         else if (spec.equals("live_display")) return R.string.live_display_title;
         else if (spec.equals("heads_up")) return R.string.quick_settings_heads_up_label;
+        else if (spec.equals("battery_saver")) return R.string.quick_settings_battery_saver_label;
         return 0;
     }
 
@@ -477,6 +480,7 @@ public class QSTileHost implements QSTile.Host, Tunable {
         else if (spec.equals("ambient_display")) return R.drawable.ic_qs_ambientdisplay_on;
         else if (spec.equals("live_display")) return R.drawable.ic_livedisplay_auto;
         else if (spec.equals("heads_up")) return R.drawable.ic_qs_heads_up_on;
+        else if (spec.equals("heads_up")) return R.drawable.ic_qs_battery_saver_on;
         return 0;
     }