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     }
 158
 159
 160     @Override
 161     protected void onStop() {
 162         super.onStop();
 163     }
 164
 165
 166     @Override
 167     protected void onDestroy() {
 168         super.onDestroy();
 169         if (mOperationsServiceConnection != null) {
 170             if (mOperationsServiceBinder != null) {
 171                 mOperationsServiceBinder.removeOperationListener(this);
 172                 mOperationsServiceBinder = null;
 173             }
 174             unbindService(mOperationsServiceConnection);
 175         }
 176     }
 177
 178
 179     /**
 180      *  Sets and validates the ownCloud {@link Account} associated to the Activity.
 181      *
 182      *  If not valid, tries to swap it for other valid and existing ownCloud {@link Account}.
 183      *
 184      *  POSTCONDITION: updates {@link #mAccountWasSet} and {@link #mAccountWasRestored}.
 185      *
 186      *  @param account          New {@link Account} to set.
 187      *  @param savedAccount     When 'true', account was retrieved from a saved instance state.
 188      */
 189     private void setAccount(Account account, boolean savedAccount) {
 190         Account oldAccount = mAccount;
 191         boolean validAccount = (account != null && AccountUtils.setCurrentOwnCloudAccount(getApplicationContext(), account.name));
 192         if (validAccount) {
 193             mAccount = account;
 194             mAccountWasSet = true;
 195             mAccountWasRestored = (savedAccount || mAccount.equals(oldAccount));
 196
 197         } else {
 198             swapToDefaultAccount();
 199         }
 200     }
 201
 202
 203     /**
 204      *  Tries to swap the current ownCloud {@link Account} for other valid and existing.
 205      *
 206      *  If no valid ownCloud {@link Account} exists, the the user is requested
 207      *  to create a new ownCloud {@link Account}.
 208      *
 209      *  POSTCONDITION: updates {@link #mAccountWasSet} and {@link #mAccountWasRestored}.
 210      *
 211      *  @return     'True' if the checked {@link Account} was valid.
 212      */
 213     private void swapToDefaultAccount() {
 214         // default to the most recently used account
 215         Account newAccount  = AccountUtils.getCurrentOwnCloudAccount(getApplicationContext());
 216         if (newAccount == null) {
 217             /// no account available: force account creation
 218             createFirstAccount();
 219             mRedirectingToSetupAccount = true;
 220             mAccountWasSet = false;
 221             mAccountWasRestored = false;
 222
 223         } else {
 224             mAccountWasSet = true;
 225             mAccountWasRestored = (newAccount.equals(mAccount));
 226             mAccount = newAccount;
 227         }
 228     }
 229
 230
 231     /**
 232      * Launches the account creation activity. To use when no ownCloud account is available
 233      */
 234     private void createFirstAccount() {
 235         AccountManager am = AccountManager.get(getApplicationContext());
 236         am.addAccount(MainApp.getAccountType(),
 237                         null,
 238                         null,
 239                         null,
 240                         this,
 241                         new AccountCreationCallback(),
 242                         null);
 243     }
 244
 245
 246     /**
 247      * {@inheritDoc}
 248      */
 249     @Override
 250     protected void onSaveInstanceState(Bundle outState) {
 251         super.onSaveInstanceState(outState);
 252         outState.putParcelable(FileActivity.EXTRA_FILE, mFile);
 253         outState.putParcelable(FileActivity.EXTRA_ACCOUNT, mAccount);
 254         outState.putBoolean(FileActivity.EXTRA_FROM_NOTIFICATION, mFromNotification);
 255     }
 256
 257
 258     /**
 259      * Getter for the main {@link OCFile} handled by the activity.
 260      *
 261      * @return  Main {@link OCFile} handled by the activity.
 262      */
 263     public OCFile getFile() {
 264         return mFile;
 265     }
 266
 267
 268     /**
 269      * Setter for the main {@link OCFile} handled by the activity.
 270      *
 271      * @param file  Main {@link OCFile} to be handled by the activity.
 272      */
 273     public void setFile(OCFile file) {
 274         mFile = file;
 275     }
 276
 277
 278     /**
 279      * Getter for the ownCloud {@link Account} where the main {@link OCFile} handled by the activity is located.
 280      *
 281      * @return  OwnCloud {@link Account} where the main {@link OCFile} handled by the activity is located.
 282      */
 283     public Account getAccount() {
 284         return mAccount;
 285     }
 286
 287     /**
 288      * @return Value of mFromNotification: True if the Activity is launched by a notification
 289      */
 290     public boolean fromNotification() {
 291         return mFromNotification;
 292     }
 293
 294     /**
 295      * @return  'True' when the Activity is finishing to enforce the setup of a new account.
 296      */
 297     protected boolean isRedirectingToSetupAccount() {
 298         return mRedirectingToSetupAccount;
 299     }
 300
 301
 302     /**
 303      * Helper class handling a callback from the {@link AccountManager} after the creation of
 304      * a new ownCloud {@link Account} finished, successfully or not.
 305      *
 306      * At this moment, only called after the creation of the first account.
 307      *
 308      * @author David A. Velasco
 309      */
 310     public class AccountCreationCallback implements AccountManagerCallback<Bundle> {
 311
 312         @Override
 313         public void run(AccountManagerFuture<Bundle> future) {
 314             FileActivity.this.mRedirectingToSetupAccount = false;
 315             boolean accountWasSet = false;
 316             if (future != null) {
 317                 try {
 318                     Bundle result;
 319                     result = future.getResult();
 320                     String name = result.getString(AccountManager.KEY_ACCOUNT_NAME);
 321                     String type = result.getString(AccountManager.KEY_ACCOUNT_TYPE);
 322                     if (AccountUtils.setCurrentOwnCloudAccount(getApplicationContext(), name)) {
 323                         setAccount(new Account(name, type), false);
 324                         accountWasSet = true;
 325                     }
 326                 } catch (OperationCanceledException e) {
 327                     Log_OC.d(TAG, "Account creation canceled");
 328
 329                 } catch (Exception e) {
 330                     Log_OC.e(TAG, "Account creation finished in exception: ", e);
 331                 }
 332
 333             } else {
 334                 Log_OC.e(TAG, "Account creation callback with null bundle");
 335             }
 336             if (!accountWasSet) {
 337                 moveTaskToBack(true);
 338             }
 339         }
 340
 341     }
 342
 343
 344     /**
 345      *  Called when the ownCloud {@link Account} associated to the Activity was just updated.
 346      *
 347      *  Child classes must grant that state depending on the {@link Account} is updated.
 348      */
 349     protected void onAccountSet(boolean stateWasRecovered) {
 350         if (getAccount() != null) {
 351             mStorageManager = new FileDataStorageManager(getAccount(), getContentResolver());
 352
 353         } else {
 354             Log_OC.wtf(TAG, "onAccountChanged was called with NULL account associated!");
 355         }
 356     }
 357
 358
 359     public FileDataStorageManager getStorageManager() {
 360         return mStorageManager;
 361     }
 362
 363
 364     public OnRemoteOperationListener getRemoteOperationListener() {
 365         return this;
 366     }
 367
 368
 369     public Handler getHandler() {
 370         return mHandler;
 371     }
 372
 373     public FileOperationsHelper getFileOperationsHelper() {
 374         return mFileOperationsHelper;
 375     }
 376
 377     /**
 378      *
 379      * @param operation     Removal operation performed.
 380      * @param result        Result of the removal.
 381      */
 382     @Override
 383     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 384         Log_OC.d(TAG, "Received result of operation in FileActivity - common behaviour for all the FileActivities ");
 385         if (operation instanceof CreateShareOperation) {
 386             onCreateShareOperationFinish((CreateShareOperation) operation, result);
 387
 388         } else if (operation instanceof UnshareLinkOperation) {
 389             onUnshareLinkOperationFinish((UnshareLinkOperation)operation, result);
 390
 391         }
 392     }
 393
 394     private void onCreateShareOperationFinish(CreateShareOperation operation, RemoteOperationResult result) {
 395         dismissLoadingDialog();
 396         if (result.isSuccess()) {
 397             updateFileFromDB();
 398
 399             Intent sendIntent = operation.getSendIntent();
 400             startActivity(sendIntent);
 401
 402         } else if (result.getCode() == ResultCode.SHARE_NOT_FOUND)  {        // Error --> SHARE_NOT_FOUND
 403                 Toast t = Toast.makeText(this, getString(R.string.share_link_file_no_exist), Toast.LENGTH_LONG);
 404                 t.show();
 405         } else {    // Generic error
 406             // Show a Message, operation finished without success
 407             Toast t = Toast.makeText(this, getString(R.string.share_link_file_error), Toast.LENGTH_LONG);
 408             t.show();
 409         }
 410     }
 411
 412
 413     private void onUnshareLinkOperationFinish(UnshareLinkOperation operation, RemoteOperationResult result) {
 414         dismissLoadingDialog();
 415
 416         if (result.isSuccess()){
 417             updateFileFromDB();
 418
 419         } else if (result.getCode() == ResultCode.SHARE_NOT_FOUND)  {        // Error --> SHARE_NOT_FOUND
 420             Toast t = Toast.makeText(this, getString(R.string.unshare_link_file_no_exist), Toast.LENGTH_LONG);
 421             t.show();
 422         } else {    // Generic error
 423             // Show a Message, operation finished without success
 424             Toast t = Toast.makeText(this, getString(R.string.unshare_link_file_error), Toast.LENGTH_LONG);
 425             t.show();
 426         }
 427
 428     }
 429
 430
 431     private void updateFileFromDB(){
 432       OCFile file = getStorageManager().getFileByPath(getFile().getRemotePath());
 433       if (file != null) {
 434           setFile(file);
 435       }
 436     }
 437
 438     /**
 439      * Show loading dialog
 440      */
 441     public void showLoadingDialog() {
 442         // Construct dialog
 443         LoadingDialog loading = new LoadingDialog(getResources().getString(R.string.wait_a_moment));
 444         FragmentManager fm = getSupportFragmentManager();
 445         FragmentTransaction ft = fm.beginTransaction();
 446         loading.show(ft, DIALOG_WAIT_TAG);
 447
 448     }
 449
 450
 451     /**
 452      * Dismiss loading dialog
 453      */
 454     public void dismissLoadingDialog(){
 455         Fragment frag = getSupportFragmentManager().findFragmentByTag(DIALOG_WAIT_TAG);
 456         if (frag != null) {
 457             LoadingDialog loading = (LoadingDialog) frag;
 458             loading.dismiss();
 459         }
 460     }
 461
 462
 463     /**
 464      * Implements callback methods for service binding. Passed as a parameter to {
 465      */
 466     private class OperationsServiceConnection implements ServiceConnection {
 467
 468         @Override
 469         public void onServiceConnected(ComponentName component, IBinder service) {
 470             if (component.equals(new ComponentName(FileActivity.this, OperationsService.class))) {
 471                 Log_OC.d(TAG, "Operations service connected");
 472                 mOperationsServiceBinder = (OperationsServiceBinder) service;
 473                 mOperationsServiceBinder.addOperationListener(FileActivity.this, mHandler);
 474                 if (!mOperationsServiceBinder.isPerformingBlockingOperation()) {
 475                     dismissLoadingDialog();
 476                 }
 477
 478             } else {
 479                 return;
 480             }
 481         }
 482
 483
 484         @Override
 485         public void onServiceDisconnected(ComponentName component) {
 486             if (component.equals(new ComponentName(FileActivity.this, OperationsService.class))) {
 487                 Log_OC.d(TAG, "Operations service disconnected");
 488                 mOperationsServiceBinder = null;
 489                 // TODO whatever could be waiting for the service is unbound
 490             }
 491         }
 492     };
 493
 494 }