src/com/android/car/settings/storage/StorageApplicationActionButtonsPreferenceController.java - platform/packages/apps/Car/Settings - Git at Google

 /*
  * Copyright (C) 2020 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.car.settings.storage;

 import static com.android.car.settings.common.ActionButtonsPreference.ActionButtons;

 import android.app.ActivityManager;
 import android.car.drivingstate.CarUxRestrictions;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.IPackageDataObserver;
 import android.content.pm.PackageManager;
 import android.os.Handler;
 import android.os.Message;
 import android.os.UserHandle;
 import android.os.UserManager;

 import androidx.annotation.VisibleForTesting;
 import androidx.loader.app.LoaderManager;

 import com.android.car.settings.R;
 import com.android.car.settings.common.ActionButtonInfo;
 import com.android.car.settings.common.ActionButtonsPreference;
 import com.android.car.settings.common.ConfirmationDialogFragment;
 import com.android.car.settings.common.FragmentController;
 import com.android.car.settings.common.Logger;
 import com.android.car.settings.common.PreferenceController;
 import com.android.settingslib.RestrictedLockUtils;
 import com.android.settingslib.RestrictedLockUtilsInternal;
 import com.android.settingslib.applications.ApplicationsState;
 import com.android.settingslib.applications.StorageStatsSource;

 /**
  * Displays the action buttons to clear an applications cache and user data.
  */
 public class StorageApplicationActionButtonsPreferenceController extends
         PreferenceController<ActionButtonsPreference> implements
         AppsStorageStatsManager.Callback {
     private static final Logger LOG = new Logger(
             StorageApplicationActionButtonsPreferenceController.class);

     @VisibleForTesting
     static final String CONFIRM_CLEAR_STORAGE_DIALOG_TAG =
             "com.android.car.settings.storage.ConfirmClearStorageDialog";

     @VisibleForTesting
     static final String CONFIRM_CANNOT_CLEAR_STORAGE_DIALOG_TAG =
             "com.android.car.settings.storage.ConfirmCannotClearStorageDialog";

     public static final String EXTRA_PACKAGE_NAME = "extra_package_name";
     // Result code identifiers
     public static final int REQUEST_MANAGE_SPACE = 2;

     // Internal constants used in Handler
     private static final int OP_SUCCESSFUL = 1;
     private static final int OP_FAILED = 2;

     // Constant used in handler to determine when the user data is cleared.
     private static final int MSG_CLEAR_USER_DATA = 1;
     // Constant used in handler to determine when the cache is cleared.
     private static final int MSG_CLEAR_CACHE = 2;

     private ActionButtonInfo mClearStorageButton;
     private ActionButtonInfo mClearCacheButton;

     private ApplicationsState.AppEntry mAppEntry;
     private String mPackageName;
     private ApplicationInfo mInfo;
     private AppsStorageStatsManager mAppsStorageStatsManager;
     private LoaderManager mLoaderManager;

     //  An observer callback to get notified when the cache file deletion is complete.
     private ClearCacheObserver mClearCacheObserver;
     //  An observer callback to get notified when the user data deletion is complete.
     private ClearUserDataObserver mClearDataObserver;

     private PackageManager mPackageManager;
     private RestrictedLockUtils.EnforcedAdmin mAppsControlDisallowedAdmin;
     private boolean mAppsControlDisallowedBySystem;
     private int mUserId;

     private boolean mCacheCleared;
     private boolean mDataCleared;

     private final ConfirmationDialogFragment.ConfirmListener mConfirmClearStorageDialog =
             arguments -> initiateClearUserData();

     private final ConfirmationDialogFragment.ConfirmListener mConfirmCannotClearStorageDialog =
             arguments -> mClearStorageButton.setEnabled(false);

     public StorageApplicationActionButtonsPreferenceController(Context context,
             String preferenceKey, FragmentController fragmentController,
             CarUxRestrictions uxRestrictions) {
         super(context, preferenceKey, fragmentController, uxRestrictions);
         mUserId = UserHandle.myUserId();
         mPackageManager = context.getPackageManager();
     }

     @Override
     protected Class<ActionButtonsPreference> getPreferenceType() {
         return ActionButtonsPreference.class;
     }

     /** Sets the {@link ApplicationsState.AppEntry} which is used to load the app name and icon. */
     public StorageApplicationActionButtonsPreferenceController setAppEntry(
             ApplicationsState.AppEntry appEntry) {
         mAppEntry = appEntry;
         return this;
     }

     /**
      * Set the packageName, which is used to perform actions on a particular package.
      */
     public StorageApplicationActionButtonsPreferenceController setPackageName(String packageName) {
         mPackageName = packageName;
         return this;
     }

     /**
      * Sets the {@link AppsStorageStatsManager} which will be used to register the controller to the
      * Listener {@link AppsStorageStatsManager.Callback}.
      */
     public StorageApplicationActionButtonsPreferenceController setAppsStorageStatsManager(
             AppsStorageStatsManager appsStorageStatsManager) {
         mAppsStorageStatsManager = appsStorageStatsManager;
         return this;
     }

     /**
      * Sets the {@link LoaderManager} used to load app storage stats.
      */
     public StorageApplicationActionButtonsPreferenceController setLoaderManager(
             LoaderManager loaderManager) {
         mLoaderManager = loaderManager;
         return this;
     }

     @Override
     protected void checkInitialized() {
         if (mAppEntry == null || mPackageName == null || mAppsStorageStatsManager == null
                 || mLoaderManager == null) {
             throw new IllegalStateException(
                     "AppEntry, PackageName, AppStorageStatsManager, and LoaderManager should be "
                             + "set before calling this function");
         }
     }

     @Override
     protected void onCreateInternal() {
         mAppsStorageStatsManager.registerListener(this);

         mClearStorageButton = getPreference().getButton(ActionButtons.BUTTON1);
         mClearCacheButton = getPreference().getButton(ActionButtons.BUTTON2);

         ConfirmationDialogFragment.resetListeners(
                 (ConfirmationDialogFragment) getFragmentController().findDialogByTag(
                         CONFIRM_CLEAR_STORAGE_DIALOG_TAG),
                 mConfirmClearStorageDialog,
                 /* rejectListener= */ null,
                 /* neutralListener= */ null);
         ConfirmationDialogFragment.resetListeners(
                 (ConfirmationDialogFragment) getFragmentController().findDialogByTag(
                         CONFIRM_CANNOT_CLEAR_STORAGE_DIALOG_TAG),
                 mConfirmCannotClearStorageDialog,
                 /* rejectListener= */ null,
                 /* neutralListener= */ null);

         mClearStorageButton
                 .setText(R.string.storage_clear_user_data_text)
                 .setIcon(R.drawable.ic_delete)
                 .setOnClickListener(i -> handleClearDataClick())
                 .setEnabled(false);
         mClearCacheButton
                 .setText(R.string.storage_clear_cache_btn_text)
                 .setIcon(R.drawable.ic_delete)
                 .setOnClickListener(i -> handleClearCacheClick())
                 .setEnabled(false);
     }

     @Override
     protected void onStartInternal() {
         mAppsControlDisallowedAdmin = RestrictedLockUtilsInternal.checkIfRestrictionEnforced(
                 getContext(), UserManager.DISALLOW_APPS_CONTROL, mUserId);
         mAppsControlDisallowedBySystem = RestrictedLockUtilsInternal.hasBaseUserRestriction(
                 getContext(), UserManager.DISALLOW_APPS_CONTROL, mUserId);
     }

     @Override
     protected void updateState(ActionButtonsPreference preference) {
         try {
             mInfo = mPackageManager.getApplicationInfo(mPackageName, 0);
         } catch (PackageManager.NameNotFoundException e) {
             LOG.e("Could not find package", e);
         }
         if (mInfo == null) {
             return;
         }
         mAppsStorageStatsManager.startLoading(mLoaderManager, mInfo, mUserId, mCacheCleared,
                 mDataCleared);
     }

     @Override
     public void onDataLoaded(StorageStatsSource.AppStorageStats data, boolean cacheCleared,
             boolean dataCleared) {
         if (data == null || mAppsControlDisallowedBySystem) {
             mClearStorageButton.setEnabled(false);
             mClearCacheButton.setEnabled(false);
         } else {
             long cacheSize = data.getCacheBytes();
             long dataSize = data.getDataBytes() - cacheSize;

             mClearStorageButton.setEnabled(dataSize > 0 && !mDataCleared);
             mClearCacheButton.setEnabled(cacheSize > 0 && !mCacheCleared);
         }
     }

     @VisibleForTesting
     void setPackageManager(PackageManager packageManager) {
         mPackageManager = packageManager;
     }

     @VisibleForTesting
     void setAppsControlDisallowedAdmin(RestrictedLockUtils.EnforcedAdmin admin) {
         mAppsControlDisallowedAdmin = admin;
     }

     @VisibleForTesting
     void setAppsControlDisallowedBySystem(boolean disallowed) {
         mAppsControlDisallowedBySystem = disallowed;
     }

     private void handleClearCacheClick() {
         if (mAppsControlDisallowedAdmin != null && !mAppsControlDisallowedBySystem) {
             RestrictedLockUtils.sendShowAdminSupportDetailsIntent(
                     getContext(), mAppsControlDisallowedAdmin);
             return;
         }
         // Lazy initialization of observer.
         if (mClearCacheObserver == null) {
             mClearCacheObserver = new ClearCacheObserver();
         }
         mPackageManager.deleteApplicationCacheFiles(mPackageName, mClearCacheObserver);
     }

     private void handleClearDataClick() {
         if (mAppsControlDisallowedAdmin != null && !mAppsControlDisallowedBySystem) {
             RestrictedLockUtils.sendShowAdminSupportDetailsIntent(
                     getContext(), mAppsControlDisallowedAdmin);
         } else {
             Intent intent = new Intent(Intent.ACTION_DEFAULT);
             boolean isManageSpaceActivityAvailable = false;
             if (mAppEntry.info.manageSpaceActivityName != null) {
                 intent.setClassName(mAppEntry.info.packageName,
                         mAppEntry.info.manageSpaceActivityName);
                 isManageSpaceActivityAvailable = mPackageManager.resolveActivity(
                         intent, /* flags= */ 0) != null;
             }

             if (isManageSpaceActivityAvailable) {
                 getFragmentController().startActivityForResult(intent,
                         REQUEST_MANAGE_SPACE, /* callback= */ null);
             } else {
                 showClearDataDialog();
             }
         }
     }

     /*
      * Private method to initiate clearing user data when the user clicks the clear data
      * button for a system package
      */
     private void initiateClearUserData() {
         mClearStorageButton.setEnabled(false);
         // Invoke uninstall or clear user data based on sysPackage
         String packageName = mAppEntry.info.packageName;
         LOG.i("Clearing user data for package : " + packageName);
         if (mClearDataObserver == null) {
             mClearDataObserver = new ClearUserDataObserver();
         }
         ActivityManager am = (ActivityManager)
                 getContext().getSystemService(Context.ACTIVITY_SERVICE);
         boolean res = am.clearApplicationUserData(packageName, mClearDataObserver);
         if (!res) {
             // Clearing data failed for some obscure reason. Just log error for now
             LOG.i("Couldn't clear application user data for package:" + packageName);
             showCannotClearDataDialog();
         }
     }

     /*
      * Private method to handle clear message notification from observer when
      * the async operation from PackageManager is complete
      */
     private void processClearMsg(Message msg) {
         int result = msg.arg1;
         String packageName = mAppEntry.info.packageName;
         if (result == OP_SUCCESSFUL) {
             LOG.i("Cleared user data for package : " + packageName);
             refreshUi();
         } else {
             mClearStorageButton.setEnabled(true);
         }
     }

     private void showClearDataDialog() {
         ConfirmationDialogFragment confirmClearStorageDialog =
                 new ConfirmationDialogFragment.Builder(getContext())
                         .setTitle(R.string.storage_clear_user_data_text)
                         .setMessage(getContext().getString(R.string.storage_clear_data_dlg_text))
                         .setPositiveButton(R.string.okay, mConfirmClearStorageDialog)
                         .setNegativeButton(android.R.string.cancel, /* rejectListener= */ null)
                         .build();
         getFragmentController().showDialog(confirmClearStorageDialog,
                 CONFIRM_CLEAR_STORAGE_DIALOG_TAG);
     }

     private void showCannotClearDataDialog() {
         ConfirmationDialogFragment dialogFragment =
                 new ConfirmationDialogFragment.Builder(getContext())
                         .setTitle(R.string.storage_clear_data_dlg_title)
                         .setMessage(getContext().getString(R.string.storage_clear_failed_dlg_text))
                         .setPositiveButton(R.string.okay, mConfirmCannotClearStorageDialog)
                         .build();
         getFragmentController().showDialog(dialogFragment, CONFIRM_CANNOT_CLEAR_STORAGE_DIALOG_TAG);
     }

     private final Handler mHandler = new Handler() {
         public void handleMessage(Message msg) {
             switch (msg.what) {
                 case MSG_CLEAR_USER_DATA:
                     mDataCleared = true;
                     mCacheCleared = true;
                     processClearMsg(msg);
                     break;
                 case MSG_CLEAR_CACHE:
                     mCacheCleared = true;
                     // Refresh info
                     refreshUi();
                     break;
             }
         }
     };

     class ClearCacheObserver extends IPackageDataObserver.Stub {
         public void onRemoveCompleted(final String packageName, final boolean succeeded) {
             Message msg = mHandler.obtainMessage(MSG_CLEAR_CACHE);
             msg.arg1 = succeeded ? OP_SUCCESSFUL : OP_FAILED;
             mHandler.sendMessage(msg);
         }
     }

     class ClearUserDataObserver extends IPackageDataObserver.Stub {
         public void onRemoveCompleted(final String packageName, final boolean succeeded) {
             Message msg = mHandler.obtainMessage(MSG_CLEAR_USER_DATA);
             msg.arg1 = succeeded ? OP_SUCCESSFUL : OP_FAILED;
             mHandler.sendMessage(msg);
         }
     }
 }
	/*
	* Copyright (C) 2020 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.car.settings.storage;

	import static com.android.car.settings.common.ActionButtonsPreference.ActionButtons;

	import android.app.ActivityManager;
	import android.car.drivingstate.CarUxRestrictions;
	import android.content.Context;
	import android.content.Intent;
	import android.content.pm.ApplicationInfo;
	import android.content.pm.IPackageDataObserver;
	import android.content.pm.PackageManager;
	import android.os.Handler;
	import android.os.Message;
	import android.os.UserHandle;
	import android.os.UserManager;

	import androidx.annotation.VisibleForTesting;
	import androidx.loader.app.LoaderManager;

	import com.android.car.settings.R;
	import com.android.car.settings.common.ActionButtonInfo;
	import com.android.car.settings.common.ActionButtonsPreference;
	import com.android.car.settings.common.ConfirmationDialogFragment;
	import com.android.car.settings.common.FragmentController;
	import com.android.car.settings.common.Logger;
	import com.android.car.settings.common.PreferenceController;
	import com.android.settingslib.RestrictedLockUtils;
	import com.android.settingslib.RestrictedLockUtilsInternal;
	import com.android.settingslib.applications.ApplicationsState;
	import com.android.settingslib.applications.StorageStatsSource;

	/**
	* Displays the action buttons to clear an applications cache and user data.
	*/
	public class StorageApplicationActionButtonsPreferenceController extends
	PreferenceController<ActionButtonsPreference> implements
	AppsStorageStatsManager.Callback {
	private static final Logger LOG = new Logger(
	StorageApplicationActionButtonsPreferenceController.class);

	@VisibleForTesting
	static final String CONFIRM_CLEAR_STORAGE_DIALOG_TAG =
	"com.android.car.settings.storage.ConfirmClearStorageDialog";

	@VisibleForTesting
	static final String CONFIRM_CANNOT_CLEAR_STORAGE_DIALOG_TAG =
	"com.android.car.settings.storage.ConfirmCannotClearStorageDialog";

	public static final String EXTRA_PACKAGE_NAME = "extra_package_name";
	// Result code identifiers
	public static final int REQUEST_MANAGE_SPACE = 2;

	// Internal constants used in Handler
	private static final int OP_SUCCESSFUL = 1;
	private static final int OP_FAILED = 2;

	// Constant used in handler to determine when the user data is cleared.
	private static final int MSG_CLEAR_USER_DATA = 1;
	// Constant used in handler to determine when the cache is cleared.
	private static final int MSG_CLEAR_CACHE = 2;

	private ActionButtonInfo mClearStorageButton;
	private ActionButtonInfo mClearCacheButton;

	private ApplicationsState.AppEntry mAppEntry;
	private String mPackageName;
	private ApplicationInfo mInfo;
	private AppsStorageStatsManager mAppsStorageStatsManager;
	private LoaderManager mLoaderManager;

	// An observer callback to get notified when the cache file deletion is complete.
	private ClearCacheObserver mClearCacheObserver;
	// An observer callback to get notified when the user data deletion is complete.
	private ClearUserDataObserver mClearDataObserver;

	private PackageManager mPackageManager;
	private RestrictedLockUtils.EnforcedAdmin mAppsControlDisallowedAdmin;
	private boolean mAppsControlDisallowedBySystem;
	private int mUserId;

	private boolean mCacheCleared;
	private boolean mDataCleared;

	private final ConfirmationDialogFragment.ConfirmListener mConfirmClearStorageDialog =
	arguments -> initiateClearUserData();

	private final ConfirmationDialogFragment.ConfirmListener mConfirmCannotClearStorageDialog =
	arguments -> mClearStorageButton.setEnabled(false);

	public StorageApplicationActionButtonsPreferenceController(Context context,
	String preferenceKey, FragmentController fragmentController,
	CarUxRestrictions uxRestrictions) {
	super(context, preferenceKey, fragmentController, uxRestrictions);
	mUserId = UserHandle.myUserId();
	mPackageManager = context.getPackageManager();
	}

	@Override
	protected Class<ActionButtonsPreference> getPreferenceType() {
	return ActionButtonsPreference.class;
	}

	/** Sets the {@link ApplicationsState.AppEntry} which is used to load the app name and icon. */
	public StorageApplicationActionButtonsPreferenceController setAppEntry(
	ApplicationsState.AppEntry appEntry) {
	mAppEntry = appEntry;
	return this;
	}

	/**
	* Set the packageName, which is used to perform actions on a particular package.
	*/
	public StorageApplicationActionButtonsPreferenceController setPackageName(String packageName) {
	mPackageName = packageName;
	return this;
	}

	/**
	* Sets the {@link AppsStorageStatsManager} which will be used to register the controller to the
	* Listener {@link AppsStorageStatsManager.Callback}.
	*/
	public StorageApplicationActionButtonsPreferenceController setAppsStorageStatsManager(
	AppsStorageStatsManager appsStorageStatsManager) {
	mAppsStorageStatsManager = appsStorageStatsManager;
	return this;
	}

	/**
	* Sets the {@link LoaderManager} used to load app storage stats.
	*/
	public StorageApplicationActionButtonsPreferenceController setLoaderManager(
	LoaderManager loaderManager) {
	mLoaderManager = loaderManager;
	return this;
	}

	@Override
	protected void checkInitialized() {
	if (mAppEntry == null \|\| mPackageName == null \|\| mAppsStorageStatsManager == null
	\|\| mLoaderManager == null) {
	throw new IllegalStateException(
	"AppEntry, PackageName, AppStorageStatsManager, and LoaderManager should be "
	+ "set before calling this function");
	}
	}

	@Override
	protected void onCreateInternal() {
	mAppsStorageStatsManager.registerListener(this);

	mClearStorageButton = getPreference().getButton(ActionButtons.BUTTON1);
	mClearCacheButton = getPreference().getButton(ActionButtons.BUTTON2);

	ConfirmationDialogFragment.resetListeners(
	(ConfirmationDialogFragment) getFragmentController().findDialogByTag(
	CONFIRM_CLEAR_STORAGE_DIALOG_TAG),
	mConfirmClearStorageDialog,
	/* rejectListener= */ null,
	/* neutralListener= */ null);
	ConfirmationDialogFragment.resetListeners(
	(ConfirmationDialogFragment) getFragmentController().findDialogByTag(
	CONFIRM_CANNOT_CLEAR_STORAGE_DIALOG_TAG),
	mConfirmCannotClearStorageDialog,
	/* rejectListener= */ null,
	/* neutralListener= */ null);

	mClearStorageButton
	.setText(R.string.storage_clear_user_data_text)
	.setIcon(R.drawable.ic_delete)
	.setOnClickListener(i -> handleClearDataClick())
	.setEnabled(false);
	mClearCacheButton
	.setText(R.string.storage_clear_cache_btn_text)
	.setIcon(R.drawable.ic_delete)
	.setOnClickListener(i -> handleClearCacheClick())
	.setEnabled(false);
	}

	@Override
	protected void onStartInternal() {
	mAppsControlDisallowedAdmin = RestrictedLockUtilsInternal.checkIfRestrictionEnforced(
	getContext(), UserManager.DISALLOW_APPS_CONTROL, mUserId);
	mAppsControlDisallowedBySystem = RestrictedLockUtilsInternal.hasBaseUserRestriction(
	getContext(), UserManager.DISALLOW_APPS_CONTROL, mUserId);
	}

	@Override
	protected void updateState(ActionButtonsPreference preference) {
	try {
	mInfo = mPackageManager.getApplicationInfo(mPackageName, 0);
	} catch (PackageManager.NameNotFoundException e) {
	LOG.e("Could not find package", e);
	}
	if (mInfo == null) {
	return;
	}
	mAppsStorageStatsManager.startLoading(mLoaderManager, mInfo, mUserId, mCacheCleared,
	mDataCleared);
	}

	@Override
	public void onDataLoaded(StorageStatsSource.AppStorageStats data, boolean cacheCleared,
	boolean dataCleared) {
	if (data == null \|\| mAppsControlDisallowedBySystem) {
	mClearStorageButton.setEnabled(false);
	mClearCacheButton.setEnabled(false);
	} else {
	long cacheSize = data.getCacheBytes();
	long dataSize = data.getDataBytes() - cacheSize;

	mClearStorageButton.setEnabled(dataSize > 0 && !mDataCleared);
	mClearCacheButton.setEnabled(cacheSize > 0 && !mCacheCleared);
	}
	}

	@VisibleForTesting
	void setPackageManager(PackageManager packageManager) {
	mPackageManager = packageManager;
	}

	@VisibleForTesting
	void setAppsControlDisallowedAdmin(RestrictedLockUtils.EnforcedAdmin admin) {
	mAppsControlDisallowedAdmin = admin;
	}

	@VisibleForTesting
	void setAppsControlDisallowedBySystem(boolean disallowed) {
	mAppsControlDisallowedBySystem = disallowed;
	}

	private void handleClearCacheClick() {
	if (mAppsControlDisallowedAdmin != null && !mAppsControlDisallowedBySystem) {
	RestrictedLockUtils.sendShowAdminSupportDetailsIntent(
	getContext(), mAppsControlDisallowedAdmin);
	return;
	}
	// Lazy initialization of observer.
	if (mClearCacheObserver == null) {
	mClearCacheObserver = new ClearCacheObserver();
	}
	mPackageManager.deleteApplicationCacheFiles(mPackageName, mClearCacheObserver);
	}

	private void handleClearDataClick() {
	if (mAppsControlDisallowedAdmin != null && !mAppsControlDisallowedBySystem) {
	RestrictedLockUtils.sendShowAdminSupportDetailsIntent(
	getContext(), mAppsControlDisallowedAdmin);
	} else {
	Intent intent = new Intent(Intent.ACTION_DEFAULT);
	boolean isManageSpaceActivityAvailable = false;
	if (mAppEntry.info.manageSpaceActivityName != null) {
	intent.setClassName(mAppEntry.info.packageName,
	mAppEntry.info.manageSpaceActivityName);
	isManageSpaceActivityAvailable = mPackageManager.resolveActivity(
	intent, /* flags= */ 0) != null;
	}

	if (isManageSpaceActivityAvailable) {
	getFragmentController().startActivityForResult(intent,
	REQUEST_MANAGE_SPACE, /* callback= */ null);
	} else {
	showClearDataDialog();
	}
	}
	}

	/*
	* Private method to initiate clearing user data when the user clicks the clear data
	* button for a system package
	*/
	private void initiateClearUserData() {
	mClearStorageButton.setEnabled(false);
	// Invoke uninstall or clear user data based on sysPackage
	String packageName = mAppEntry.info.packageName;
	LOG.i("Clearing user data for package : " + packageName);
	if (mClearDataObserver == null) {
	mClearDataObserver = new ClearUserDataObserver();
	}
	ActivityManager am = (ActivityManager)
	getContext().getSystemService(Context.ACTIVITY_SERVICE);
	boolean res = am.clearApplicationUserData(packageName, mClearDataObserver);
	if (!res) {
	// Clearing data failed for some obscure reason. Just log error for now
	LOG.i("Couldn't clear application user data for package:" + packageName);
	showCannotClearDataDialog();
	}
	}

	/*
	* Private method to handle clear message notification from observer when
	* the async operation from PackageManager is complete
	*/
	private void processClearMsg(Message msg) {
	int result = msg.arg1;
	String packageName = mAppEntry.info.packageName;
	if (result == OP_SUCCESSFUL) {
	LOG.i("Cleared user data for package : " + packageName);
	refreshUi();
	} else {
	mClearStorageButton.setEnabled(true);
	}
	}

	private void showClearDataDialog() {
	ConfirmationDialogFragment confirmClearStorageDialog =
	new ConfirmationDialogFragment.Builder(getContext())
	.setTitle(R.string.storage_clear_user_data_text)
	.setMessage(getContext().getString(R.string.storage_clear_data_dlg_text))
	.setPositiveButton(R.string.okay, mConfirmClearStorageDialog)
	.setNegativeButton(android.R.string.cancel, /* rejectListener= */ null)
	.build();
	getFragmentController().showDialog(confirmClearStorageDialog,
	CONFIRM_CLEAR_STORAGE_DIALOG_TAG);
	}

	private void showCannotClearDataDialog() {
	ConfirmationDialogFragment dialogFragment =
	new ConfirmationDialogFragment.Builder(getContext())
	.setTitle(R.string.storage_clear_data_dlg_title)
	.setMessage(getContext().getString(R.string.storage_clear_failed_dlg_text))
	.setPositiveButton(R.string.okay, mConfirmCannotClearStorageDialog)
	.build();
	getFragmentController().showDialog(dialogFragment, CONFIRM_CANNOT_CLEAR_STORAGE_DIALOG_TAG);
	}

	private final Handler mHandler = new Handler() {
	public void handleMessage(Message msg) {
	switch (msg.what) {
	case MSG_CLEAR_USER_DATA:
	mDataCleared = true;
	mCacheCleared = true;
	processClearMsg(msg);
	break;
	case MSG_CLEAR_CACHE:
	mCacheCleared = true;
	// Refresh info
	refreshUi();
	break;
	}
	}
	};

	class ClearCacheObserver extends IPackageDataObserver.Stub {
	public void onRemoveCompleted(final String packageName, final boolean succeeded) {
	Message msg = mHandler.obtainMessage(MSG_CLEAR_CACHE);
	msg.arg1 = succeeded ? OP_SUCCESSFUL : OP_FAILED;
	mHandler.sendMessage(msg);
	}
	}

	class ClearUserDataObserver extends IPackageDataObserver.Stub {
	public void onRemoveCompleted(final String packageName, final boolean succeeded) {
	Message msg = mHandler.obtainMessage(MSG_CLEAR_USER_DATA);
	msg.arg1 = succeeded ? OP_SUCCESSFUL : OP_FAILED;
	mHandler.sendMessage(msg);
	}
	}
	}