Settings: Add platform and RAM to Model & Hardware

This seems kinda empty... Fill it with fun stuff

Change-Id: Ia43cb31b7567bed07f2b8a1d8637de4e66320c90
[jaysonedson@gmail.com: Move to new HardwareInfo]
Signed-off-by: Jason Edson <jaysonedson@gmail.com>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>

res/values/evolution_strings.xml

@@ -82,4 +82,8 @@
     <string name="wifi_per_connection_random_mac_addr">Use per-connection randomized MAC (default)</string>
     <string name="wifi_per_network_random_mac_addr">Use per-network randomized MAC</string>
     <string name="wifi_device_mac_addr">Use device MAC</string>
+
+    <!-- Hardware info -->
+    <string name="platform_revision">Platform</string>
+    <string name="total_ram">Total RAM</string>
 </resources>

res/xml/hardware_info.xml

@@ -30,6 +30,24 @@
         settings:controller="com.android.settings.deviceinfo.hardwareinfo.DeviceModelPreferenceController"
         settings:enableCopying="true"/>
 
+    <!-- Platform -->
+    <Preference
+        android:key="hardware_info_platform"
+        android:title="@string/platform_revision"
+        android:summary="@string/summary_placeholder"
+        android:selectable="false"
+        settings:controller="com.android.settings.deviceinfo.hardwareinfo.PlatformRevisionPreferenceController"
+        settings:enableCopying="true"/>
+
+    <!-- Total RAM -->
+    <Preference
+        android:key="hardware_info_ram"
+        android:title="@string/total_ram"
+        android:summary="@string/summary_placeholder"
+        android:selectable="false"
+        settings:controller="com.android.settings.deviceinfo.hardwareinfo.TotalRAMPreferenceController"
+        settings:enableCopying="true"/>
+
     <!-- SerialNumber -->
     <Preference
         android:key="hardware_info_device_serial"

src/com/android/settings/deviceinfo/hardwareinfo/PlatformRevisionPreferenceController.java

@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2019 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.settings.deviceinfo.hardwareinfo;
+
+import android.content.Context;
+import android.os.SystemProperties;
+
+import com.android.settings.R;
+import com.android.settings.core.BasePreferenceController;
+import com.android.settings.slices.Sliceable;
+
+public class PlatformRevisionPreferenceController extends BasePreferenceController {
+
+    public PlatformRevisionPreferenceController(Context context, String preferenceKey) {
+        super(context, preferenceKey);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return mContext.getResources().getBoolean(R.bool.config_show_device_model)
+                ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
+    }
+
+    @Override
+    public boolean useDynamicSliceSummary() {
+        return true;
+    }
+
+    @Override
+    public boolean isSliceable() {
+        return true;
+    }
+
+    @Override
+    public CharSequence getSummary() {
+        return SystemProperties.get("ro.board.platform");
+    }
+}

src/com/android/settings/deviceinfo/hardwareinfo/TotalRAMPreferenceController.java

@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2019 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.settings.deviceinfo.hardwareinfo;
+
+import android.content.Context;
+import android.text.format.Formatter;
+
+import androidx.annotation.VisibleForTesting;
+import androidx.preference.Preference;
+import androidx.preference.PreferenceScreen;
+
+import com.android.settings.R;
+import com.android.settings.applications.ProcStatsData;
+import com.android.settings.applications.ProcessStatsBase;
+import com.android.settings.core.BasePreferenceController;
+import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settingslib.utils.ThreadUtils;
+
+public class TotalRAMPreferenceController extends BasePreferenceController implements
+        PreferenceControllerMixin {
+
+    private ProcStatsData mProcStatsData;
+    private PreferenceScreen mPreferenceScreen;
+
+    public TotalRAMPreferenceController(Context context, String preferenceKey) {
+        super(context, preferenceKey);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return mContext.getResources().getBoolean(R.bool.config_show_device_model)
+                ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+
+        mProcStatsData = getProcStatsData();
+        mPreferenceScreen = screen;
+        setDuration();
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        // This is posted on the background thread to speed up fragment launch time for dev options
+        // mProcStasData.refreshStats(true) takes ~20ms to run.
+        ThreadUtils.postOnBackgroundThread(() -> {
+            mProcStatsData.refreshStats(true);
+            final ProcStatsData.MemInfo memInfo = mProcStatsData.getMemInfo();
+            final String totalResult = Formatter.formatShortFileSize(mContext,
+                    (long) memInfo.realTotalRam);
+            ThreadUtils.postOnMainThread(
+                    () -> mPreferenceScreen.findPreference(mPreferenceKey).setSummary(totalResult));
+        });
+    }
+
+    @VisibleForTesting
+    void setDuration() {
+        mProcStatsData.setDuration(ProcessStatsBase.sDurations[0] /* 3 hours */);
+    }
+
+    @VisibleForTesting
+    ProcStatsData getProcStatsData() {
+        return new ProcStatsData(mContext, false);
+    }
+}