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