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      1 /*
      2  * Copyright (C) 2010 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.contacts.interactions;
     18 
     19 import com.android.contacts.ContactSaveService;
     20 import com.android.contacts.R;
     21 import com.android.contacts.model.AccountType;
     22 import com.android.contacts.model.AccountTypeManager;
     23 import com.google.android.collect.Sets;
     24 import com.google.common.annotations.VisibleForTesting;
     25 
     26 import android.app.Activity;
     27 import android.app.AlertDialog;
     28 import android.app.Fragment;
     29 import android.app.FragmentManager;
     30 import android.app.LoaderManager;
     31 import android.app.LoaderManager.LoaderCallbacks;
     32 import android.content.Context;
     33 import android.content.CursorLoader;
     34 import android.content.DialogInterface;
     35 import android.content.DialogInterface.OnDismissListener;
     36 import android.content.Loader;
     37 import android.database.Cursor;
     38 import android.net.Uri;
     39 import android.os.Bundle;
     40 import android.provider.ContactsContract.Contacts;
     41 import android.provider.ContactsContract.Contacts.Entity;
     42 import android.util.Log;
     43 
     44 import java.util.HashSet;
     45 
     46 /**
     47  * An interaction invoked to delete a contact.
     48  */
     49 public class ContactDeletionInteraction extends Fragment
     50         implements LoaderCallbacks<Cursor>, OnDismissListener {
     51 
     52     private static final String FRAGMENT_TAG = "deleteContact";
     53 
     54     private static final String KEY_ACTIVE = "active";
     55     private static final String KEY_CONTACT_URI = "contactUri";
     56     private static final String KEY_FINISH_WHEN_DONE = "finishWhenDone";
     57     public static final String ARG_CONTACT_URI = "contactUri";
     58 
     59     private static final String[] ENTITY_PROJECTION = new String[] {
     60         Entity.RAW_CONTACT_ID, //0
     61         Entity.ACCOUNT_TYPE, //1
     62         Entity.DATA_SET, // 2
     63         Entity.CONTACT_ID, // 3
     64         Entity.LOOKUP_KEY, // 4
     65     };
     66 
     67     private static final int COLUMN_INDEX_RAW_CONTACT_ID = 0;
     68     private static final int COLUMN_INDEX_ACCOUNT_TYPE = 1;
     69     private static final int COLUMN_INDEX_DATA_SET = 2;
     70     private static final int COLUMN_INDEX_CONTACT_ID = 3;
     71     private static final int COLUMN_INDEX_LOOKUP_KEY = 4;
     72 
     73     private boolean mActive;
     74     private Uri mContactUri;
     75     private boolean mFinishActivityWhenDone;
     76     private Context mContext;
     77     private AlertDialog mDialog;
     78 
     79     /** This is a wrapper around the fragment's loader manager to be used only during testing. */
     80     private TestLoaderManager mTestLoaderManager;
     81 
     82     @VisibleForTesting
     83     int mMessageId;
     84 
     85     /**
     86      * Starts the interaction.
     87      *
     88      * @param activity the activity within which to start the interaction
     89      * @param contactUri the URI of the contact to delete
     90      * @param finishActivityWhenDone whether to finish the activity upon completion of the
     91      *        interaction
     92      * @return the newly created interaction
     93      */
     94     public static ContactDeletionInteraction start(
     95             Activity activity, Uri contactUri, boolean finishActivityWhenDone) {
     96         return startWithTestLoaderManager(activity, contactUri, finishActivityWhenDone, null);
     97     }
     98 
     99     /**
    100      * Starts the interaction and optionally set up a {@link TestLoaderManager}.
    101      *
    102      * @param activity the activity within which to start the interaction
    103      * @param contactUri the URI of the contact to delete
    104      * @param finishActivityWhenDone whether to finish the activity upon completion of the
    105      *        interaction
    106      * @param testLoaderManager the {@link TestLoaderManager} to use to load the data, may be null
    107      *        in which case the default {@link LoaderManager} is used
    108      * @return the newly created interaction
    109      */
    110     @VisibleForTesting
    111     static ContactDeletionInteraction startWithTestLoaderManager(
    112             Activity activity, Uri contactUri, boolean finishActivityWhenDone,
    113             TestLoaderManager testLoaderManager) {
    114         if (contactUri == null) {
    115             return null;
    116         }
    117 
    118         FragmentManager fragmentManager = activity.getFragmentManager();
    119         ContactDeletionInteraction fragment =
    120                 (ContactDeletionInteraction) fragmentManager.findFragmentByTag(FRAGMENT_TAG);
    121         if (fragment == null) {
    122             fragment = new ContactDeletionInteraction();
    123             fragment.setTestLoaderManager(testLoaderManager);
    124             fragment.setContactUri(contactUri);
    125             fragment.setFinishActivityWhenDone(finishActivityWhenDone);
    126             fragmentManager.beginTransaction().add(fragment, FRAGMENT_TAG)
    127                     .commitAllowingStateLoss();
    128         } else {
    129             fragment.setTestLoaderManager(testLoaderManager);
    130             fragment.setContactUri(contactUri);
    131             fragment.setFinishActivityWhenDone(finishActivityWhenDone);
    132         }
    133         return fragment;
    134     }
    135 
    136     @Override
    137     public LoaderManager getLoaderManager() {
    138         // Return the TestLoaderManager if one is set up.
    139         LoaderManager loaderManager = super.getLoaderManager();
    140         if (mTestLoaderManager != null) {
    141             // Set the delegate: this operation is idempotent, so let's just do it every time.
    142             mTestLoaderManager.setDelegate(loaderManager);
    143             return mTestLoaderManager;
    144         } else {
    145             return loaderManager;
    146         }
    147     }
    148 
    149     /** Sets the TestLoaderManager that is used to wrap the actual LoaderManager in tests. */
    150     private void setTestLoaderManager(TestLoaderManager mockLoaderManager) {
    151         mTestLoaderManager = mockLoaderManager;
    152     }
    153 
    154     @Override
    155     public void onAttach(Activity activity) {
    156         super.onAttach(activity);
    157         mContext = activity;
    158     }
    159 
    160     @Override
    161     public void onDestroyView() {
    162         super.onDestroyView();
    163         if (mDialog != null && mDialog.isShowing()) {
    164             mDialog.setOnDismissListener(null);
    165             mDialog.dismiss();
    166             mDialog = null;
    167         }
    168     }
    169 
    170     public void setContactUri(Uri contactUri) {
    171         mContactUri = contactUri;
    172         mActive = true;
    173         if (isStarted()) {
    174             Bundle args = new Bundle();
    175             args.putParcelable(ARG_CONTACT_URI, mContactUri);
    176             getLoaderManager().restartLoader(R.id.dialog_delete_contact_loader_id, args, this);
    177         }
    178     }
    179 
    180     private void setFinishActivityWhenDone(boolean finishActivityWhenDone) {
    181         this.mFinishActivityWhenDone = finishActivityWhenDone;
    182 
    183     }
    184 
    185     /* Visible for testing */
    186     boolean isStarted() {
    187         return isAdded();
    188     }
    189 
    190     @Override
    191     public void onStart() {
    192         if (mActive) {
    193             Bundle args = new Bundle();
    194             args.putParcelable(ARG_CONTACT_URI, mContactUri);
    195             getLoaderManager().initLoader(R.id.dialog_delete_contact_loader_id, args, this);
    196         }
    197         super.onStart();
    198     }
    199 
    200     @Override
    201     public void onStop() {
    202         super.onStop();
    203         if (mDialog != null) {
    204             mDialog.hide();
    205         }
    206     }
    207 
    208     @Override
    209     public Loader<Cursor> onCreateLoader(int id, Bundle args) {
    210         Uri contactUri = args.getParcelable(ARG_CONTACT_URI);
    211         return new CursorLoader(mContext,
    212                 Uri.withAppendedPath(contactUri, Entity.CONTENT_DIRECTORY), ENTITY_PROJECTION,
    213                 null, null, null);
    214     }
    215 
    216     @Override
    217     public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
    218         if (mDialog != null) {
    219             mDialog.dismiss();
    220             mDialog = null;
    221         }
    222 
    223         if (!mActive) {
    224             return;
    225         }
    226 
    227         long contactId = 0;
    228         String lookupKey = null;
    229 
    230         // This cursor may contain duplicate raw contacts, so we need to de-dupe them first
    231         HashSet<Long>  readOnlyRawContacts = Sets.newHashSet();
    232         HashSet<Long>  writableRawContacts = Sets.newHashSet();
    233 
    234         AccountTypeManager accountTypes = AccountTypeManager.getInstance(getActivity());
    235         cursor.moveToPosition(-1);
    236         while (cursor.moveToNext()) {
    237             final long rawContactId = cursor.getLong(COLUMN_INDEX_RAW_CONTACT_ID);
    238             final String accountType = cursor.getString(COLUMN_INDEX_ACCOUNT_TYPE);
    239             final String dataSet = cursor.getString(COLUMN_INDEX_DATA_SET);
    240             contactId = cursor.getLong(COLUMN_INDEX_CONTACT_ID);
    241             lookupKey = cursor.getString(COLUMN_INDEX_LOOKUP_KEY);
    242             AccountType type = accountTypes.getAccountType(accountType, dataSet);
    243             boolean writable = type == null || type.areContactsWritable();
    244             if (writable) {
    245                 writableRawContacts.add(rawContactId);
    246             } else {
    247                 readOnlyRawContacts.add(rawContactId);
    248             }
    249         }
    250 
    251         int readOnlyCount = readOnlyRawContacts.size();
    252         int writableCount = writableRawContacts.size();
    253         if (readOnlyCount > 0 && writableCount > 0) {
    254             mMessageId = R.string.readOnlyContactDeleteConfirmation;
    255         } else if (readOnlyCount > 0 && writableCount == 0) {
    256             mMessageId = R.string.readOnlyContactWarning;
    257         } else if (readOnlyCount == 0 && writableCount > 1) {
    258             mMessageId = R.string.multipleContactDeleteConfirmation;
    259         } else {
    260             mMessageId = R.string.deleteConfirmation;
    261         }
    262 
    263         final Uri contactUri = Contacts.getLookupUri(contactId, lookupKey);
    264         showDialog(mMessageId, contactUri);
    265 
    266         // We don't want onLoadFinished() calls any more, which may come when the database is
    267         // updating.
    268         getLoaderManager().destroyLoader(R.id.dialog_delete_contact_loader_id);
    269     }
    270 
    271     @Override
    272     public void onLoaderReset(Loader<Cursor> loader) {
    273     }
    274 
    275     private void showDialog(int messageId, final Uri contactUri) {
    276         mDialog = new AlertDialog.Builder(getActivity())
    277                 .setIconAttribute(android.R.attr.alertDialogIcon)
    278                 .setMessage(messageId)
    279                 .setNegativeButton(android.R.string.cancel, null)
    280                 .setPositiveButton(android.R.string.ok,
    281                     new DialogInterface.OnClickListener() {
    282                         @Override
    283                         public void onClick(DialogInterface dialog, int whichButton) {
    284                             doDeleteContact(contactUri);
    285                         }
    286                     }
    287                 )
    288                 .create();
    289 
    290         mDialog.setOnDismissListener(this);
    291         mDialog.show();
    292     }
    293 
    294     @Override
    295     public void onDismiss(DialogInterface dialog) {
    296         mActive = false;
    297         mDialog = null;
    298     }
    299 
    300     @Override
    301     public void onSaveInstanceState(Bundle outState) {
    302         super.onSaveInstanceState(outState);
    303         outState.putBoolean(KEY_ACTIVE, mActive);
    304         outState.putParcelable(KEY_CONTACT_URI, mContactUri);
    305         outState.putBoolean(KEY_FINISH_WHEN_DONE, mFinishActivityWhenDone);
    306     }
    307 
    308     @Override
    309     public void onActivityCreated(Bundle savedInstanceState) {
    310         super.onActivityCreated(savedInstanceState);
    311         if (savedInstanceState != null) {
    312             mActive = savedInstanceState.getBoolean(KEY_ACTIVE);
    313             mContactUri = savedInstanceState.getParcelable(KEY_CONTACT_URI);
    314             mFinishActivityWhenDone = savedInstanceState.getBoolean(KEY_FINISH_WHEN_DONE);
    315         }
    316     }
    317 
    318     protected void doDeleteContact(Uri contactUri) {
    319         mContext.startService(ContactSaveService.createDeleteContactIntent(mContext, contactUri));
    320         if (isAdded() && mFinishActivityWhenDone) {
    321             getActivity().finish();
    322         }
    323     }
    324 }
    325