Remove all apps page

Instead move the functionality back into overflow menu as show/hide
system apps. Also move the reset app preferences from advanced to
the overflow menu.

Bug: 20210160
Change-Id: Ied573e1f7dfc438b06642ee2af8f11868130ba3b

src/com/android/settings/applications/ResetAppsHelper.java

@@ -0,0 +1,145 @@
+/*
+ * 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 static android.net.NetworkPolicyManager.POLICY_NONE;
+import static android.net.NetworkPolicyManager.POLICY_REJECT_METERED_BACKGROUND;
+
+import android.app.ActivityManager;
+import android.app.AlertDialog;
+import android.app.AppOpsManager;
+import android.app.INotificationManager;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.IPackageManager;
+import android.content.pm.PackageManager;
+import android.net.NetworkPolicyManager;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.os.RemoteException;
+import android.os.ServiceManager;
+import android.os.UserHandle;
+
+import com.android.settings.R;
+
+import java.util.List;
+
+public class ResetAppsHelper implements DialogInterface.OnClickListener,
+        DialogInterface.OnDismissListener {
+
+    private static final String EXTRA_RESET_DIALOG = "resetDialog";
+
+    private final PackageManager mPm;
+    private final IPackageManager mIPm;
+    private final INotificationManager mNm;
+    private final NetworkPolicyManager mNpm;
+    private final AppOpsManager mAom;
+    private final Context mContext;
+
+    private AlertDialog mResetDialog;
+
+    public ResetAppsHelper(Context context) {
+        mContext = context;
+        mPm = context.getPackageManager();
+        mIPm = IPackageManager.Stub.asInterface(ServiceManager.getService("package"));
+        mNm = INotificationManager.Stub.asInterface(
+                ServiceManager.getService(Context.NOTIFICATION_SERVICE));
+        mNpm = NetworkPolicyManager.from(context);
+        mAom = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
+    }
+
+    public void onRestoreInstanceState(Bundle savedInstanceState) {
+        if (savedInstanceState != null && savedInstanceState.getBoolean(EXTRA_RESET_DIALOG)) {
+            buildResetDialog();
+        }
+    }
+
+    public void onSaveInstanceState(Bundle outState) {
+        if (mResetDialog != null) {
+            outState.putBoolean(EXTRA_RESET_DIALOG, true);
+        }
+    }
+
+    public void stop() {
+        if (mResetDialog != null) {
+            mResetDialog.dismiss();
+            mResetDialog = null;
+        }
+    }
+
+    void buildResetDialog() {
+        if (mResetDialog == null) {
+            mResetDialog = new AlertDialog.Builder(mContext)
+                    .setTitle(R.string.reset_app_preferences_title)
+                    .setMessage(R.string.reset_app_preferences_desc)
+                    .setPositiveButton(R.string.reset_app_preferences_button, this)
+                    .setNegativeButton(R.string.cancel, null)
+                    .setOnDismissListener(this)
+                    .show();
+        }
+    }
+
+    @Override
+    public void onDismiss(DialogInterface dialog) {
+        if (mResetDialog == dialog) {
+            mResetDialog = null;
+        }
+    }
+
+    @Override
+    public void onClick(DialogInterface dialog, int which) {
+        if (mResetDialog != dialog) {
+            return;
+        }
+        AsyncTask.execute(new Runnable() {
+            @Override
+            public void run() {
+                List<ApplicationInfo> apps = mPm.getInstalledApplications(
+                        PackageManager.GET_DISABLED_COMPONENTS);
+                for (int i = 0; i < apps.size(); i++) {
+                    ApplicationInfo app = apps.get(i);
+                    try {
+                        mNm.setNotificationsEnabledForPackage(app.packageName, app.uid, true);
+                    } catch (android.os.RemoteException ex) {
+                    }
+                    if (!app.enabled) {
+                        if (mPm.getApplicationEnabledSetting(app.packageName)
+                                == PackageManager.COMPONENT_ENABLED_STATE_DISABLED_USER) {
+                            mPm.setApplicationEnabledSetting(app.packageName,
+                                    PackageManager.COMPONENT_ENABLED_STATE_DEFAULT,
+                                    PackageManager.DONT_KILL_APP);
+                        }
+                    }
+                }
+                try {
+                    mIPm.resetPreferredActivities(UserHandle.myUserId());
+                } catch (RemoteException e) {
+                }
+                mAom.resetAllModes();
+                final int[] restrictedUids = mNpm.getUidsWithPolicy(
+                        POLICY_REJECT_METERED_BACKGROUND);
+                final int currentUserId = ActivityManager.getCurrentUser();
+                for (int uid : restrictedUids) {
+                    // Only reset for current user
+                    if (UserHandle.getUserId(uid) == currentUserId) {
+                        mNpm.setUidPolicy(uid, POLICY_NONE);
+                    }
+                }
+            }
+        });
+    }
+}