Implement development UI for background check.

Allows you to toggle off full background access for
whatever apps you want.

Change-Id: I8542ecac1449ccd65dc18af3c0ca1fc18443f89c
diff --git a/src/com/android/settings/DevelopmentSettings.java b/src/com/android/settings/DevelopmentSettings.java
index 9bccbcf..950af3c 100644
--- a/src/com/android/settings/DevelopmentSettings.java
+++ b/src/com/android/settings/DevelopmentSettings.java
@@ -76,6 +76,7 @@
 import android.widget.TextView;
 
 import com.android.internal.logging.MetricsLogger;
+import com.android.settings.applications.BackgroundCheckSummary;
 import com.android.settings.fuelgauge.InactiveApps;
 import com.android.settings.search.BaseSearchIndexProvider;
 import com.android.settings.search.Indexable;
@@ -170,6 +171,8 @@
             = "immediately_destroy_activities";
     private static final String APP_PROCESS_LIMIT_KEY = "app_process_limit";
 
+    private static final String BACKGROUND_CHECK_KEY = "background_check";
+
     private static final String SHOW_ALL_ANRS_KEY = "show_all_anrs";
 
     private static final String PACKAGE_MIME_TYPE = "application/vnd.android.package-archive";
@@ -1718,6 +1721,8 @@
             writeForceResizableOptions();
         } else if (INACTIVE_APPS_KEY.equals(preference.getKey())) {
             startInactiveAppsFragment();
+        } else if (BACKGROUND_CHECK_KEY.equals(preference.getKey())) {
+            startBackgroundCheckFragment();
         } else {
             return super.onPreferenceTreeClick(preference);
         }
@@ -1731,6 +1736,12 @@
                 null, R.string.inactive_apps_title, null, null, 0);
     }
 
+    private void startBackgroundCheckFragment() {
+        ((SettingsActivity) getActivity()).startPreferencePanel(
+                BackgroundCheckSummary.class.getName(),
+                null, R.string.background_check_title, null, null, 0);
+    }
+
     private boolean showKeyguardConfirmation(Resources resources, int requestCode) {
         return new ChooseLockSettingsHelper(getActivity(), this).launchConfirmationActivity(
                 requestCode, resources.getString(R.string.oem_unlock_enable));
diff --git a/src/com/android/settings/Settings.java b/src/com/android/settings/Settings.java
index 4380d1e..149ef45 100644
--- a/src/com/android/settings/Settings.java
+++ b/src/com/android/settings/Settings.java
@@ -61,6 +61,7 @@
             return super.isValidFragment(className);
             }
     }
+    public static class BackgroundCheckSummaryActivity extends SettingsActivity { /* empty */ }
     public static class StorageUseActivity extends SettingsActivity { /* empty */ }
     public static class DevelopmentSettingsActivity extends SettingsActivity { /* empty */ }
     public static class AccessibilitySettingsActivity extends SettingsActivity { /* empty */ }
diff --git a/src/com/android/settings/applications/AppOpsCategory.java b/src/com/android/settings/applications/AppOpsCategory.java
index 3ccd6bb..4b54891 100644
--- a/src/com/android/settings/applications/AppOpsCategory.java
+++ b/src/com/android/settings/applications/AppOpsCategory.java
@@ -16,6 +16,7 @@
 
 package com.android.settings.applications;
 
+import android.app.AppOpsManager;
 import android.app.ListFragment;
 import android.app.LoaderManager;
 import android.content.AsyncTaskLoader;
@@ -34,6 +35,7 @@
 import android.widget.BaseAdapter;
 import android.widget.ImageView;
 import android.widget.ListView;
+import android.widget.Switch;
 import android.widget.TextView;
 
 import com.android.settings.R;
@@ -48,6 +50,7 @@
     private static final int RESULT_APP_DETAILS = 1;
 
     AppOpsState mState;
+    boolean mUserControlled;
 
     // This is the Adapter being used to display the list's data.
     AppListAdapter mAdapter;
@@ -58,8 +61,13 @@
     }
 
     public AppOpsCategory(AppOpsState.OpsTemplate template) {
+        this(template, false);
+    }
+
+    public AppOpsCategory(AppOpsState.OpsTemplate template, boolean userControlled) {
         Bundle args = new Bundle();
         args.putParcelable("template", template);
+        args.putBoolean("userControlled", userControlled);
         setArguments(args);
     }
 
@@ -117,18 +125,22 @@
         final InterestingConfigChanges mLastConfig = new InterestingConfigChanges();
         final AppOpsState mState;
         final AppOpsState.OpsTemplate mTemplate;
+        final boolean mUserControlled;
 
         List<AppOpEntry> mApps;
         PackageIntentReceiver mPackageObserver;
 
-        public AppListLoader(Context context, AppOpsState state, AppOpsState.OpsTemplate template) {
+        public AppListLoader(Context context, AppOpsState state, AppOpsState.OpsTemplate template,
+                boolean userControlled) {
             super(context);
             mState = state;
             mTemplate = template;
+            mUserControlled = userControlled;
         }
 
         @Override public List<AppOpEntry> loadInBackground() {
-            return mState.buildState(mTemplate);
+            return mState.buildState(mTemplate, 0, null,
+                    mUserControlled ? AppOpsState.LABEL_COMPARATOR : AppOpsState.RECENCY_COMPARATOR);
         }
 
         /**
@@ -247,13 +259,15 @@
         private final Resources mResources;
         private final LayoutInflater mInflater;
         private final AppOpsState mState;
+        private final boolean mUserControlled;
 
         List<AppOpEntry> mList;
 
-        public AppListAdapter(Context context, AppOpsState state) {
+        public AppListAdapter(Context context, AppOpsState state, boolean userControlled) {
             mResources = context.getResources();
             mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
             mState = state;
+            mUserControlled = userControlled;
         }
 
         public void setData(List<AppOpEntry> data) {
@@ -292,9 +306,18 @@
             ((ImageView)view.findViewById(R.id.app_icon)).setImageDrawable(
                     item.getAppEntry().getIcon());
             ((TextView)view.findViewById(R.id.app_name)).setText(item.getAppEntry().getLabel());
-            ((TextView)view.findViewById(R.id.op_name)).setText(item.getSummaryText(mState));
-            ((TextView)view.findViewById(R.id.op_time)).setText(
-                    item.getTimeText(mResources, false));
+            if (mUserControlled) {
+                ((TextView) view.findViewById(R.id.op_name)).setText(
+                        item.getTimeText(mResources, false));
+                view.findViewById(R.id.op_time).setVisibility(View.GONE);
+                ((Switch) view.findViewById(R.id.op_switch)).setChecked(
+                        item.getPrimaryOpMode() == AppOpsManager.MODE_ALLOWED);
+            } else {
+                ((TextView) view.findViewById(R.id.op_name)).setText(item.getSummaryText(mState));
+                ((TextView) view.findViewById(R.id.op_time)).setText(
+                        item.getTimeText(mResources, false));
+                view.findViewById(R.id.op_switch).setVisibility(View.GONE);
+            }
 
             return view;
         }
@@ -304,6 +327,7 @@
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         mState = new AppOpsState(getActivity());
+        mUserControlled = getArguments().getBoolean("userControlled");
     }
 
     @Override public void onActivityCreated(Bundle savedInstanceState) {
@@ -317,7 +341,7 @@
         setHasOptionsMenu(true);
 
         // Create an empty adapter we will use to display the loaded data.
-        mAdapter = new AppListAdapter(getActivity(), mState);
+        mAdapter = new AppListAdapter(getActivity(), mState, mUserControlled);
         setListAdapter(mAdapter);
 
         // Start out with a progress indicator.
@@ -341,8 +365,22 @@
     @Override public void onListItemClick(ListView l, View v, int position, long id) {
         AppOpEntry entry = mAdapter.getItem(position);
         if (entry != null) {
-            mCurrentPkgName = entry.getAppEntry().getApplicationInfo().packageName;
-            startApplicationDetailsActivity();
+            if (mUserControlled) {
+                // We treat this as tapping on the check box, toggling the app op state.
+                Switch sw = ((Switch) v.findViewById(R.id.op_switch));
+                boolean checked = !sw.isChecked();
+                sw.setChecked(checked);
+                AppOpsManager.OpEntry op = entry.getOpEntry(0);
+                int mode = checked ? AppOpsManager.MODE_ALLOWED : AppOpsManager.MODE_IGNORED;
+                mState.getAppOpsManager().setMode(op.getOp(),
+                        entry.getAppEntry().getApplicationInfo().uid,
+                        entry.getAppEntry().getApplicationInfo().packageName,
+                        mode);
+                entry.overridePrimaryOpMode(mode);
+            } else {
+                mCurrentPkgName = entry.getAppEntry().getApplicationInfo().packageName;
+                startApplicationDetailsActivity();
+            }
         }
     }
 
@@ -352,7 +390,7 @@
         if (fargs != null) {
             template = (AppOpsState.OpsTemplate)fargs.getParcelable("template");
         }
-        return new AppListLoader(getActivity(), mState, template);
+        return new AppListLoader(getActivity(), mState, template, mUserControlled);
     }
 
     @Override public void onLoadFinished(Loader<List<AppOpEntry>> loader, List<AppOpEntry> data) {
diff --git a/src/com/android/settings/applications/AppOpsState.java b/src/com/android/settings/applications/AppOpsState.java
index c3189d6..237eac6 100644
--- a/src/com/android/settings/applications/AppOpsState.java
+++ b/src/com/android/settings/applications/AppOpsState.java
@@ -180,6 +180,7 @@
                     false,
                     false,
                     false,
+                    false,
                     false }
             );
 
@@ -206,9 +207,14 @@
                     false }
             );
 
+    public static final OpsTemplate RUN_IN_BACKGROUND_TEMPLATE = new OpsTemplate(
+            new int[] { AppOpsManager.OP_RUN_IN_BACKGROUND },
+            new boolean[] { false }
+            );
+
     public static final OpsTemplate[] ALL_TEMPLATES = new OpsTemplate[] {
             LOCATION_TEMPLATE, PERSONAL_TEMPLATE, MESSAGING_TEMPLATE,
-            MEDIA_TEMPLATE, DEVICE_TEMPLATE
+            MEDIA_TEMPLATE, DEVICE_TEMPLATE, RUN_IN_BACKGROUND_TEMPLATE
     };
 
     /**
@@ -306,6 +312,7 @@
                 = new ArrayList<AppOpsManager.OpEntry>();
         private final AppEntry mApp;
         private final int mSwitchOrder;
+        private int mOverriddenPrimaryMode = -1;
 
         public AppOpEntry(AppOpsManager.PackageOps pkg, AppOpsManager.OpEntry op, AppEntry app,
                 int switchOrder) {
@@ -363,6 +370,14 @@
             return mOps.get(pos);
         }
 
+        public int getPrimaryOpMode() {
+            return mOverriddenPrimaryMode >= 0 ? mOverriddenPrimaryMode : mOps.get(0).getMode();
+        }
+
+        public void overridePrimaryOpMode(int mode) {
+            mOverriddenPrimaryMode = mode;
+        }
+
         private CharSequence getCombinedText(ArrayList<AppOpsManager.OpEntry> ops,
                 CharSequence[] items) {
             if (ops.size() == 1) {
@@ -418,9 +433,9 @@
     }
 
     /**
-     * Perform alphabetical comparison of application entry objects.
+     * Perform app op state comparison of application entry objects.
      */
-    public static final Comparator<AppOpEntry> APP_OP_COMPARATOR = new Comparator<AppOpEntry>() {
+    public static final Comparator<AppOpEntry> RECENCY_COMPARATOR = new Comparator<AppOpEntry>() {
         private final Collator sCollator = Collator.getInstance();
         @Override
         public int compare(AppOpEntry object1, AppOpEntry object2) {
@@ -440,6 +455,18 @@
         }
     };
 
+    /**
+     * Perform alphabetical comparison of application entry objects.
+     */
+    public static final Comparator<AppOpEntry> LABEL_COMPARATOR = new Comparator<AppOpEntry>() {
+        private final Collator sCollator = Collator.getInstance();
+        @Override
+        public int compare(AppOpEntry object1, AppOpEntry object2) {
+            return sCollator.compare(object1.getAppEntry().getLabel(),
+                    object2.getAppEntry().getLabel());
+        }
+    };
+
     private void addOp(List<AppOpEntry> entries, AppOpsManager.PackageOps pkgOps,
             AppEntry appEntry, AppOpsManager.OpEntry opEntry, boolean allowMerge, int switchOrder) {
         if (allowMerge && entries.size() > 0) {
@@ -466,8 +493,12 @@
         entries.add(entry);
     }
 
+    public AppOpsManager getAppOpsManager() {
+        return mAppOps;
+    }
+
     public List<AppOpEntry> buildState(OpsTemplate tpl) {
-        return buildState(tpl, 0, null);
+        return buildState(tpl, 0, null, RECENCY_COMPARATOR);
     }
 
     private AppEntry getAppEntry(final Context context, final HashMap<String, AppEntry> appEntries,
@@ -492,6 +523,11 @@
     }
 
     public List<AppOpEntry> buildState(OpsTemplate tpl, int uid, String packageName) {
+        return buildState(tpl, uid, packageName, RECENCY_COMPARATOR);
+    }
+
+    public List<AppOpEntry> buildState(OpsTemplate tpl, int uid, String packageName,
+            Comparator<AppOpEntry> comparator) {
         final Context context = mContext;
 
         final HashMap<String, AppEntry> appEntries = new HashMap<String, AppEntry>();
@@ -593,7 +629,7 @@
         }
 
         // Sort the list.
-        Collections.sort(entries, APP_OP_COMPARATOR);
+        Collections.sort(entries, comparator);
 
         // Done!
         return entries;
diff --git a/src/com/android/settings/applications/BackgroundCheckSummary.java b/src/com/android/settings/applications/BackgroundCheckSummary.java
new file mode 100644
index 0000000..dfd4c49
--- /dev/null
+++ b/src/com/android/settings/applications/BackgroundCheckSummary.java
@@ -0,0 +1,66 @@
+/**
+ * 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.settings.applications;
+
+import android.app.Fragment;
+import android.app.FragmentManager;
+import android.app.FragmentTransaction;
+import android.content.res.TypedArray;
+import android.os.Bundle;
+import android.preference.PreferenceFrameLayout;
+import android.support.v13.app.FragmentPagerAdapter;
+import android.support.v4.view.PagerTabStrip;
+import android.support.v4.view.ViewPager;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.android.internal.logging.MetricsLogger;
+import com.android.settings.InstrumentedFragment;
+import com.android.settings.R;
+
+public class BackgroundCheckSummary extends InstrumentedFragment {
+    // layout inflater object used to inflate views
+    private LayoutInflater mInflater;
+
+    @Override
+    protected int getMetricsCategory() {
+        return MetricsLogger.BACKGROUND_CHECK_SUMMARY;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        // initialize the inflater
+        mInflater = inflater;
+
+        View rootView = mInflater.inflate(R.layout.background_check_summary,
+                container, false);
+
+        // We have to do this now because PreferenceFrameLayout looks at it
+        // only when the view is added.
+        if (container instanceof PreferenceFrameLayout) {
+            ((PreferenceFrameLayout.LayoutParams) rootView.getLayoutParams()).removeBorders = true;
+        }
+
+        FragmentTransaction ft = getChildFragmentManager().beginTransaction();
+        ft.add(R.id.appops_content, new AppOpsCategory(AppOpsState.RUN_IN_BACKGROUND_TEMPLATE,
+                        true), "appops");
+        ft.commitAllowingStateLoss();
+
+        return rootView;
+    }
+}