src/com/owncloud/android/ui/activity/FileActivity.java

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2011  Bartek Przybylski
   3  *   Copyright (C) 2012-2013 ownCloud Inc.
   4  *
   5  *   This program is free software: you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License version 2,
   7  *   as published by the Free Software Foundation.
   8  *
   9  *   This program is distributed in the hope that it will be useful,
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *   GNU General Public License for more details.
  13  *
  14  *   You should have received a copy of the GNU General Public License
  15  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  */
  18
  19 package com.owncloud.android.ui.activity;
  20
  21 import android.accounts.Account;
  22 import android.accounts.AccountManager;
  23 import android.accounts.AccountManagerCallback;
  24 import android.accounts.AccountManagerFuture;
  25 import android.accounts.OperationCanceledException;
  26 import android.content.ComponentName;
  27 import android.content.Context;
  28 import android.content.Intent;
  29 import android.content.ServiceConnection;
  30 import android.os.Bundle;
  31 import android.os.Handler;
  32 import android.os.IBinder;
  33 import android.support.v4.app.Fragment;
  34 import android.support.v4.app.FragmentManager;
  35 import android.support.v4.app.FragmentTransaction;
  36 import android.widget.Toast;
  37
  38 import com.actionbarsherlock.app.SherlockFragmentActivity;
  39 import com.owncloud.android.MainApp;
  40 import com.owncloud.android.R;
  41 import com.owncloud.android.authentication.AccountUtils;
  42 import com.owncloud.android.datamodel.FileDataStorageManager;
  43 import com.owncloud.android.datamodel.OCFile;
  44 import com.owncloud.android.files.FileOperationsHelper;
  45 import com.owncloud.android.lib.operations.common.OnRemoteOperationListener;
  46 import com.owncloud.android.lib.operations.common.RemoteOperation;
  47 import com.owncloud.android.lib.operations.common.RemoteOperationResult;
  48 import com.owncloud.android.lib.operations.common.RemoteOperationResult.ResultCode;
  49 import com.owncloud.android.operations.CreateShareOperation;
  50 import com.owncloud.android.operations.UnshareLinkOperation;
  51
  52 import com.owncloud.android.services.OperationsService;
  53 import com.owncloud.android.services.OperationsService.OperationsServiceBinder;
  54 import com.owncloud.android.ui.dialog.LoadingDialog;
  55 import com.owncloud.android.utils.Log_OC;
  56
  57
  58 /**
  59  * Activity with common behaviour for activities handling {@link OCFile}s in ownCloud {@link Account}s .
  60  *
  61  * @author David A. Velasco
  62  */
  63 public class FileActivity extends SherlockFragmentActivity implements OnRemoteOperationListener {
  64
  65     public static final String EXTRA_FILE = "com.owncloud.android.ui.activity.FILE";
  66     public static final String EXTRA_ACCOUNT = "com.owncloud.android.ui.activity.ACCOUNT";
  67     public static final String EXTRA_WAITING_TO_PREVIEW = "com.owncloud.android.ui.activity.WAITING_TO_PREVIEW";
  68     public static final String EXTRA_FROM_NOTIFICATION= "com.owncloud.android.ui.activity.FROM_NOTIFICATION";
  69
  70     public static final String TAG = FileActivity.class.getSimpleName();
  71
  72     private static final String DIALOG_WAIT_TAG = "DIALOG_WAIT";
  73
  74
  75     /** OwnCloud {@link Account} where the main {@link OCFile} handled by the activity is located. */
  76     private Account mAccount;
  77
  78     /** Main {@link OCFile} handled by the activity.*/
  79     private OCFile mFile;
  80
  81     /** Flag to signal that the activity will is finishing to enforce the creation of an ownCloud {@link Account} */
  82     private boolean mRedirectingToSetupAccount = false;
  83
  84     /** Flag to signal when the value of mAccount was set */
  85     private boolean mAccountWasSet;
  86
  87     /** Flag to signal when the value of mAccount was restored from a saved state */
  88     private boolean mAccountWasRestored;
  89
  90     /** Flag to signal if the activity is launched by a notification */
  91     private boolean mFromNotification;
  92
  93     /** Messages handler associated to the main thread and the life cycle of the activity */
  94     private Handler mHandler;
  95
  96     /** Access point to the cached database for the current ownCloud {@link Account} */
  97     private FileDataStorageManager mStorageManager = null;
  98
  99     private FileOperationsHelper mFileOperationsHelper;
 100
 101     private ServiceConnection mOperationsServiceConnection = null;
 102
 103     private OperationsServiceBinder mOperationsServiceBinder = null;
 104
 105
 106     /**
 107      * Loads the ownCloud {@link Account} and main {@link OCFile} to be handled by the instance of
 108      * the {@link FileActivity}.
 109      *
 110      * Grants that a valid ownCloud {@link Account} is associated to the instance, or that the user
 111      * is requested to create a new one.
 112      */
 113     @Override
 114     protected void onCreate(Bundle savedInstanceState) {
 115         super.onCreate(savedInstanceState);
 116         mHandler = new Handler();
 117         mFileOperationsHelper = new FileOperationsHelper();
 118         Account account;
 119         if(savedInstanceState != null) {
 120             account = savedInstanceState.getParcelable(FileActivity.EXTRA_ACCOUNT);
 121             mFile = savedInstanceState.getParcelable(FileActivity.EXTRA_FILE);
 122             mFromNotification = savedInstanceState.getBoolean(FileActivity.EXTRA_FROM_NOTIFICATION);
 123         } else {
 124             account = getIntent().getParcelableExtra(FileActivity.EXTRA_ACCOUNT);
 125             mFile = getIntent().getParcelableExtra(FileActivity.EXTRA_FILE);
 126             mFromNotification = getIntent().getBooleanExtra(FileActivity.EXTRA_FROM_NOTIFICATION, false);
 127         }
 128
 129         setAccount(account, savedInstanceState != null);
 130
 131         mOperationsServiceConnection = new OperationsServiceConnection();
 132         bindService(new Intent(this, OperationsService.class), mOperationsServiceConnection, Context.BIND_AUTO_CREATE);
 133     }
 134
 135
 136     /**
 137      *  Since ownCloud {@link Account}s can be managed from the system setting menu,
 138      *  the existence of the {@link Account} associated to the instance must be checked
 139      *  every time it is restarted.
 140      */
 141     @Override
 142     protected void onRestart() {
 143         super.onRestart();
 144         boolean validAccount = (mAccount != null && AccountUtils.setCurrentOwnCloudAccount(getApplicationContext(), mAccount.name));
 145         if (!validAccount) {
 146             swapToDefaultAccount();
 147         }
 148     }
 149
 150
 151     @Override
 152     protected void onStart() {
 153         super.onStart();
 154         if (mAccountWasSet) {
 155             onAccountSet(mAccountWasRestored);
 156         }
 157         if (mOperationsServiceBinder != null) {
 158             mOperationsServiceBinder.addOperationListener(FileActivity.this, mHandler);
 159             if (!mOperationsServiceBinder.isPerformingBlockingOperation()) {
 160                 dismissLoadingDialog();
 161             }
 162         }
 163     }
 164
 165
 166     @Override
 167     protected void onStop() {
 168         super.onStop();
 169         if (mOperationsServiceBinder != null) {
 170             mOperationsServiceBinder.removeOperationListener(this);
 171             mOperationsServiceBinder = null;
 172         }
 173     }
 174
 175
 176     @Override
 177     protected void onDestroy() {
 178         super.onDestroy();
 179         if (mOperationsServiceConnection != null) {
 180             unbindService(mOperationsServiceConnection);
 181         }
 182     }
 183
 184
 185     /**
 186      *  Sets and validates the ownCloud {@link Account} associated to the Activity.
 187      *
 188      *  If not valid, tries to swap it for other valid and existing ownCloud {@link Account}.
 189      *
 190      *  POSTCONDITION: updates {@link #mAccountWasSet} and {@link #mAccountWasRestored}.
 191      *
 192      *  @param account          New {@link Account} to set.
 193      *  @param savedAccount     When 'true', account was retrieved from a saved instance state.
 194      */
 195     private void setAccount(Account account, boolean savedAccount) {
 196         Account oldAccount = mAccount;
 197         boolean validAccount = (account != null && AccountUtils.setCurrentOwnCloudAccount(getApplicationContext(), account.name));
 198         if (validAccount) {
 199             mAccount = account;
 200             mAccountWasSet = true;
 201             mAccountWasRestored = (savedAccount || mAccount.equals(oldAccount));
 202
 203         } else {
 204             swapToDefaultAccount();
 205         }
 206     }
 207
 208
 209     /**
 210      *  Tries to swap the current ownCloud {@link Account} for other valid and existing.
 211      *
 212      *  If no valid ownCloud {@link Account} exists, the the user is requested
 213      *  to create a new ownCloud {@link Account}.
 214      *
 215      *  POSTCONDITION: updates {@link #mAccountWasSet} and {@link #mAccountWasRestored}.
 216      *
 217      *  @return     'True' if the checked {@link Account} was valid.
 218      */
 219     private void swapToDefaultAccount() {
 220         // default to the most recently used account
 221         Account newAccount  = AccountUtils.getCurrentOwnCloudAccount(getApplicationContext());
 222         if (newAccount == null) {
 223             /// no account available: force account creation
 224             createFirstAccount();
 225             mRedirectingToSetupAccount = true;
 226             mAccountWasSet = false;
 227             mAccountWasRestored = false;
 228
 229         } else {
 230             mAccountWasSet = true;
 231             mAccountWasRestored = (newAccount.equals(mAccount));
 232             mAccount = newAccount;
 233         }
 234     }
 235
 236
 237     /**
 238      * Launches the account creation activity. To use when no ownCloud account is available
 239      */
 240     private void createFirstAccount() {
 241         AccountManager am = AccountManager.get(getApplicationContext());
 242         am.addAccount(MainApp.getAccountType(),
 243                         null,
 244                         null,
 245                         null,
 246                         this,
 247                         new AccountCreationCallback(),
 248                         null);
 249     }
 250
 251
 252     /**
 253      * {@inheritDoc}
 254      */
 255     @Override
 256     protected void onSaveInstanceState(Bundle outState) {
 257         super.onSaveInstanceState(outState);
 258         outState.putParcelable(FileActivity.EXTRA_FILE, mFile);
 259         outState.putParcelable(FileActivity.EXTRA_ACCOUNT, mAccount);
 260         outState.putBoolean(FileActivity.EXTRA_FROM_NOTIFICATION, mFromNotification);
 261     }
 262
 263
 264     /**
 265      * Getter for the main {@link OCFile} handled by the activity.
 266      *
 267      * @return  Main {@link OCFile} handled by the activity.
 268      */
 269     public OCFile getFile() {
 270         return mFile;
 271     }
 272
 273
 274     /**
 275      * Setter for the main {@link OCFile} handled by the activity.
 276      *
 277      * @param file  Main {@link OCFile} to be handled by the activity.
 278      */
 279     public void setFile(OCFile file) {
 280         mFile = file;
 281     }
 282
 283
 284     /**
 285      * Getter for the ownCloud {@link Account} where the main {@link OCFile} handled by the activity is located.
 286      *
 287      * @return  OwnCloud {@link Account} where the main {@link OCFile} handled by the activity is located.
 288      */
 289     public Account getAccount() {
 290         return mAccount;
 291     }
 292
 293     /**
 294      * @return Value of mFromNotification: True if the Activity is launched by a notification
 295      */
 296     public boolean fromNotification() {
 297         return mFromNotification;
 298     }
 299
 300     /**
 301      * @return  'True' when the Activity is finishing to enforce the setup of a new account.
 302      */
 303     protected boolean isRedirectingToSetupAccount() {
 304         return mRedirectingToSetupAccount;
 305     }
 306
 307
 308     /**
 309      * Helper class handling a callback from the {@link AccountManager} after the creation of
 310      * a new ownCloud {@link Account} finished, successfully or not.
 311      *
 312      * At this moment, only called after the creation of the first account.
 313      *
 314      * @author David A. Velasco
 315      */
 316     public class AccountCreationCallback implements AccountManagerCallback<Bundle> {
 317
 318         @Override
 319         public void run(AccountManagerFuture<Bundle> future) {
 320             FileActivity.this.mRedirectingToSetupAccount = false;
 321             boolean accountWasSet = false;
 322             if (future != null) {
 323                 try {
 324                     Bundle result;
 325                     result = future.getResult();
 326                     String name = result.getString(AccountManager.KEY_ACCOUNT_NAME);
 327                     String type = result.getString(AccountManager.KEY_ACCOUNT_TYPE);
 328                     if (AccountUtils.setCurrentOwnCloudAccount(getApplicationContext(), name)) {
 329                         setAccount(new Account(name, type), false);
 330                         accountWasSet = true;
 331                     }
 332                 } catch (OperationCanceledException e) {
 333                     Log_OC.d(TAG, "Account creation canceled");
 334
 335                 } catch (Exception e) {
 336                     Log_OC.e(TAG, "Account creation finished in exception: ", e);
 337                 }
 338
 339             } else {
 340                 Log_OC.e(TAG, "Account creation callback with null bundle");
 341             }
 342             if (!accountWasSet) {
 343                 moveTaskToBack(true);
 344             }
 345         }
 346
 347     }
 348
 349
 350     /**
 351      *  Called when the ownCloud {@link Account} associated to the Activity was just updated.
 352      *
 353      *  Child classes must grant that state depending on the {@link Account} is updated.
 354      */
 355     protected void onAccountSet(boolean stateWasRecovered) {
 356         if (getAccount() != null) {
 357             mStorageManager = new FileDataStorageManager(getAccount(), getContentResolver());
 358
 359         } else {
 360             Log_OC.wtf(TAG, "onAccountChanged was called with NULL account associated!");
 361         }
 362     }
 363
 364
 365     public FileDataStorageManager getStorageManager() {
 366         return mStorageManager;
 367     }
 368
 369
 370     public OnRemoteOperationListener getRemoteOperationListener() {
 371         return this;
 372     }
 373
 374
 375     public Handler getHandler() {
 376         return mHandler;
 377     }
 378
 379     public FileOperationsHelper getFileOperationsHelper() {
 380         return mFileOperationsHelper;
 381     }
 382
 383     /**
 384      *
 385      * @param operation     Removal operation performed.
 386      * @param result        Result of the removal.
 387      */
 388     @Override
 389     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 390         Log_OC.d(TAG, "Received result of operation in FileActivity - common behaviour for all the FileActivities ");
 391         if (operation instanceof CreateShareOperation) {
 392             onCreateShareOperationFinish((CreateShareOperation) operation, result);
 393
 394         } else if (operation instanceof UnshareLinkOperation) {
 395             onUnshareLinkOperationFinish((UnshareLinkOperation)operation, result);
 396
 397         }
 398     }
 399
 400     private void onCreateShareOperationFinish(CreateShareOperation operation, RemoteOperationResult result) {
 401         dismissLoadingDialog();
 402         if (result.isSuccess()) {
 403             updateFileFromDB();
 404
 405             Intent sendIntent = operation.getSendIntent();
 406             startActivity(sendIntent);
 407
 408         } else if (result.getCode() == ResultCode.SHARE_NOT_FOUND)  {        // Error --> SHARE_NOT_FOUND
 409                 Toast t = Toast.makeText(this, getString(R.string.share_link_file_no_exist), Toast.LENGTH_LONG);
 410                 t.show();
 411         } else {    // Generic error
 412             // Show a Message, operation finished without success
 413             Toast t = Toast.makeText(this, getString(R.string.share_link_file_error), Toast.LENGTH_LONG);
 414             t.show();
 415         }
 416     }
 417
 418
 419     private void onUnshareLinkOperationFinish(UnshareLinkOperation operation, RemoteOperationResult result) {
 420         dismissLoadingDialog();
 421
 422         if (result.isSuccess()){
 423             updateFileFromDB();
 424
 425         } else if (result.getCode() == ResultCode.SHARE_NOT_FOUND)  {        // Error --> SHARE_NOT_FOUND
 426             Toast t = Toast.makeText(this, getString(R.string.unshare_link_file_no_exist), Toast.LENGTH_LONG);
 427             t.show();
 428         } else {    // Generic error
 429             // Show a Message, operation finished without success
 430             Toast t = Toast.makeText(this, getString(R.string.unshare_link_file_error), Toast.LENGTH_LONG);
 431             t.show();
 432         }
 433
 434     }
 435
 436
 437     private void updateFileFromDB(){
 438       OCFile file = getStorageManager().getFileByPath(getFile().getRemotePath());
 439       if (file != null) {
 440           setFile(file);
 441       }
 442     }
 443
 444     /**
 445      * Show loading dialog
 446      */
 447     public void showLoadingDialog() {
 448         // Construct dialog
 449         LoadingDialog loading = new LoadingDialog(getResources().getString(R.string.wait_a_moment));
 450         FragmentManager fm = getSupportFragmentManager();
 451         FragmentTransaction ft = fm.beginTransaction();
 452         loading.show(ft, DIALOG_WAIT_TAG);
 453
 454     }
 455
 456
 457     /**
 458      * Dismiss loading dialog
 459      */
 460     public void dismissLoadingDialog(){
 461         Fragment frag = getSupportFragmentManager().findFragmentByTag(DIALOG_WAIT_TAG);
 462         if (frag != null) {
 463             LoadingDialog loading = (LoadingDialog) frag;
 464             loading.dismiss();
 465         }
 466     }
 467
 468
 469     /**
 470      * Implements callback methods for service binding. Passed as a parameter to {
 471      */
 472     private class OperationsServiceConnection implements ServiceConnection {
 473
 474         @Override
 475         public void onServiceConnected(ComponentName component, IBinder service) {
 476             if (component.equals(new ComponentName(FileActivity.this, OperationsService.class))) {
 477                 Log_OC.d(TAG, "Operations service connected");
 478                 mOperationsServiceBinder = (OperationsServiceBinder) service;
 479                 mOperationsServiceBinder.addOperationListener(FileActivity.this, mHandler);
 480                 if (!mOperationsServiceBinder.isPerformingBlockingOperation()) {
 481                     dismissLoadingDialog();
 482                 }
 483
 484             } else {
 485                 return;
 486             }
 487         }
 488
 489
 490         @Override
 491         public void onServiceDisconnected(ComponentName component) {
 492             if (component.equals(new ComponentName(FileActivity.this, OperationsService.class))) {
 493                 Log_OC.d(TAG, "Operations service disconnected");
 494                 mOperationsServiceBinder = null;
 495                 // TODO whatever could be waiting for the service is unbound
 496             }
 497         }
 498     };
 499
 500 }