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.Intent;
  27 import android.net.Uri;
  28 import android.os.Bundle;
  29 import android.webkit.MimeTypeMap;
  30
  31 import com.actionbarsherlock.app.SherlockFragmentActivity;
  32 import com.owncloud.android.MainApp;
  33 import com.owncloud.android.R;
  34 import com.owncloud.android.authentication.AccountUtils;
  35 import com.owncloud.android.datamodel.OCFile;
  36 import com.owncloud.android.oc_framework.accounts.OwnCloudAccount;
  37 import com.owncloud.android.oc_framework.network.webdav.WebdavUtils;
  38 import com.owncloud.android.utils.Log_OC;
  39
  40
  41 /**
  42  * Activity with common behaviour for activities handling {@link OCFile}s in ownCloud {@link Account}s .
  43  *
  44  * @author David A. Velasco
  45  */
  46 public abstract class FileActivity extends SherlockFragmentActivity {
  47
  48     public static final String EXTRA_FILE = "com.owncloud.android.ui.activity.FILE";
  49     public static final String EXTRA_ACCOUNT = "com.owncloud.android.ui.activity.ACCOUNT";
  50     public static final String EXTRA_WAITING_TO_PREVIEW = "com.owncloud.android.ui.activity.WAITING_TO_PREVIEW";
  51     public static final String EXTRA_FROM_NOTIFICATION= "com.owncloud.android.ui.activity.FROM_NOTIFICATION";
  52
  53     public static final String TAG = FileActivity.class.getSimpleName();
  54
  55
  56     /** OwnCloud {@link Account} where the main {@link OCFile} handled by the activity is located. */
  57     private Account mAccount;
  58
  59     /** Main {@link OCFile} handled by the activity.*/
  60     private OCFile mFile;
  61
  62     /** Flag to signal that the activity will is finishing to enforce the creation of an ownCloud {@link Account} */
  63     private boolean mRedirectingToSetupAccount = false;
  64
  65     /** Flag to signal when the value of mAccount was set */
  66     private boolean mAccountWasSet;
  67
  68     /** Flag to signal when the value of mAccount was restored from a saved state */
  69     private boolean mAccountWasRestored;
  70
  71     /** Flag to signal if the activity is launched by a notification */
  72     private boolean mFromNotification;
  73
  74
  75
  76     /**
  77      * Loads the ownCloud {@link Account} and main {@link OCFile} to be handled by the instance of
  78      * the {@link FileActivity}.
  79      *
  80      * Grants that a valid ownCloud {@link Account} is associated to the instance, or that the user
  81      * is requested to create a new one.
  82      */
  83     @Override
  84     protected void onCreate(Bundle savedInstanceState) {
  85         super.onCreate(savedInstanceState);
  86         Account account;
  87         if(savedInstanceState != null) {
  88             account = savedInstanceState.getParcelable(FileActivity.EXTRA_ACCOUNT);
  89             mFile = savedInstanceState.getParcelable(FileActivity.EXTRA_FILE);
  90             mFromNotification = savedInstanceState.getBoolean(FileActivity.EXTRA_FROM_NOTIFICATION);
  91         } else {
  92             account = getIntent().getParcelableExtra(FileActivity.EXTRA_ACCOUNT);
  93             mFile = getIntent().getParcelableExtra(FileActivity.EXTRA_FILE);
  94             mFromNotification = getIntent().getBooleanExtra(FileActivity.EXTRA_FROM_NOTIFICATION, false);
  95         }
  96
  97         setAccount(account, savedInstanceState != null);
  98
  99     }
 100
 101
 102     /**
 103      *  Since ownCloud {@link Account}s can be managed from the system setting menu,
 104      *  the existence of the {@link Account} associated to the instance must be checked
 105      *  every time it is restarted.
 106      */
 107     @Override
 108     protected void onRestart() {
 109         super.onRestart();
 110         boolean validAccount = (mAccount != null && AccountUtils.setCurrentOwnCloudAccount(getApplicationContext(), mAccount.name));
 111         if (!validAccount) {
 112             swapToDefaultAccount();
 113         }
 114
 115     }
 116
 117
 118     @Override
 119     protected void onStart() {
 120         super.onStart();
 121         if (mAccountWasSet) {
 122             onAccountSet(mAccountWasRestored);
 123         }
 124     }
 125
 126
 127     /**
 128      *  Sets and validates the ownCloud {@link Account} associated to the Activity.
 129      *
 130      *  If not valid, tries to swap it for other valid and existing ownCloud {@link Account}.
 131      *
 132      *  POSTCONDITION: updates {@link #mAccountWasSet} and {@link #mAccountWasRestored}.
 133      *
 134      *  @param account          New {@link Account} to set.
 135      *  @param savedAccount     When 'true', account was retrieved from a saved instance state.
 136      */
 137     private void setAccount(Account account, boolean savedAccount) {
 138         Account oldAccount = mAccount;
 139         boolean validAccount = (account != null && AccountUtils.setCurrentOwnCloudAccount(getApplicationContext(), account.name));
 140         if (validAccount) {
 141             mAccount = account;
 142             mAccountWasSet = true;
 143             mAccountWasRestored = (savedAccount || mAccount.equals(oldAccount));
 144
 145         } else {
 146             swapToDefaultAccount();
 147         }
 148     }
 149
 150
 151     /**
 152      *  Tries to swap the current ownCloud {@link Account} for other valid and existing.
 153      *
 154      *  If no valid ownCloud {@link Account} exists, the the user is requested
 155      *  to create a new ownCloud {@link Account}.
 156      *
 157      *  POSTCONDITION: updates {@link #mAccountWasSet} and {@link #mAccountWasRestored}.
 158      *
 159      *  @return     'True' if the checked {@link Account} was valid.
 160      */
 161     private void swapToDefaultAccount() {
 162         // default to the most recently used account
 163         Account newAccount  = AccountUtils.getCurrentOwnCloudAccount(getApplicationContext());
 164         if (newAccount == null) {
 165             /// no account available: force account creation
 166             createFirstAccount();
 167             mRedirectingToSetupAccount = true;
 168             mAccountWasSet = false;
 169             mAccountWasRestored = false;
 170
 171         } else {
 172             mAccountWasSet = true;
 173             mAccountWasRestored = (newAccount.equals(mAccount));
 174             mAccount = newAccount;
 175         }
 176     }
 177
 178
 179     /**
 180      * Launches the account creation activity. To use when no ownCloud account is available
 181      */
 182     private void createFirstAccount() {
 183         AccountManager am = AccountManager.get(getApplicationContext());
 184         am.addAccount(MainApp.getAccountType(),
 185                         null,
 186                         null,
 187                         null,
 188                         this,
 189                         new AccountCreationCallback(),
 190                         null);
 191     }
 192
 193
 194     /**
 195      * {@inheritDoc}
 196      */
 197     @Override
 198     protected void onSaveInstanceState(Bundle outState) {
 199         super.onSaveInstanceState(outState);
 200         outState.putParcelable(FileActivity.EXTRA_FILE, mFile);
 201         outState.putParcelable(FileActivity.EXTRA_ACCOUNT, mAccount);
 202         outState.putBoolean(FileActivity.EXTRA_FROM_NOTIFICATION, mFromNotification);
 203     }
 204
 205
 206     /**
 207      * Getter for the main {@link OCFile} handled by the activity.
 208      *
 209      * @return  Main {@link OCFile} handled by the activity.
 210      */
 211     public OCFile getFile() {
 212         return mFile;
 213     }
 214
 215
 216     /**
 217      * Setter for the main {@link OCFile} handled by the activity.
 218      *
 219      * @param file  Main {@link OCFile} to be handled by the activity.
 220      */
 221     public void setFile(OCFile file) {
 222         mFile = file;
 223     }
 224
 225
 226     /**
 227      * Getter for the ownCloud {@link Account} where the main {@link OCFile} handled by the activity is located.
 228      *
 229      * @return  OwnCloud {@link Account} where the main {@link OCFile} handled by the activity is located.
 230      */
 231     public Account getAccount() {
 232         return mAccount;
 233     }
 234
 235     /**
 236      * @return Value of mFromNotification: True if the Activity is launched by a notification
 237      */
 238     public boolean fromNotification() {
 239         return mFromNotification;
 240     }
 241
 242     /**
 243      * @return  'True' when the Activity is finishing to enforce the setup of a new account.
 244      */
 245     protected boolean isRedirectingToSetupAccount() {
 246         return mRedirectingToSetupAccount;
 247     }
 248
 249
 250     /**
 251      *  @return 'True' if the server supports the Share API
 252      */
 253     public boolean isSharedSupported() {
 254         if (getAccount() != null) {
 255             AccountManager accountManager = AccountManager.get(this);
 256             return Boolean.parseBoolean(accountManager.getUserData(getAccount(), OwnCloudAccount.Constants.KEY_SUPPORTS_SHARE_API));
 257         }
 258         return false;
 259     }
 260
 261     /**
 262      * Helper class handling a callback from the {@link AccountManager} after the creation of
 263      * a new ownCloud {@link Account} finished, successfully or not.
 264      *
 265      * At this moment, only called after the creation of the first account.
 266      *
 267      * @author David A. Velasco
 268      */
 269     public class AccountCreationCallback implements AccountManagerCallback<Bundle> {
 270
 271         @Override
 272         public void run(AccountManagerFuture<Bundle> future) {
 273             FileActivity.this.mRedirectingToSetupAccount = false;
 274             boolean accountWasSet = false;
 275             if (future != null) {
 276                 try {
 277                     Bundle result;
 278                     result = future.getResult();
 279                     String name = result.getString(AccountManager.KEY_ACCOUNT_NAME);
 280                     String type = result.getString(AccountManager.KEY_ACCOUNT_TYPE);
 281                     if (AccountUtils.setCurrentOwnCloudAccount(getApplicationContext(), name)) {
 282                         setAccount(new Account(name, type), false);
 283                         accountWasSet = true;
 284                     }
 285                 } catch (OperationCanceledException e) {
 286                     Log_OC.d(TAG, "Account creation canceled");
 287
 288                 } catch (Exception e) {
 289                     Log_OC.e(TAG, "Account creation finished in exception: ", e);
 290                 }
 291
 292             } else {
 293                 Log_OC.e(TAG, "Account creation callback with null bundle");
 294             }
 295             if (!accountWasSet) {
 296                 moveTaskToBack(true);
 297             }
 298         }
 299
 300     }
 301
 302
 303     /**
 304      *  Called when the ownCloud {@link Account} associated to the Activity was just updated.
 305      *
 306      *  Child classes must grant that state depending on the {@link Account} is updated.
 307      */
 308     protected abstract void onAccountSet(boolean stateWasRecovered);
 309
 310
 311
 312     public void openFile(OCFile file) {
 313         if (file != null) {
 314             String storagePath = file.getStoragePath();
 315             String encodedStoragePath = WebdavUtils.encodePath(storagePath);
 316
 317             Intent intentForSavedMimeType = new Intent(Intent.ACTION_VIEW);
 318             intentForSavedMimeType.setDataAndType(Uri.parse("file://"+ encodedStoragePath), file.getMimetype());
 319             intentForSavedMimeType.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 320
 321             Intent intentForGuessedMimeType = null;
 322             if (storagePath.lastIndexOf('.') >= 0) {
 323                 String guessedMimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(storagePath.substring(storagePath.lastIndexOf('.') + 1));
 324                 if (guessedMimeType != null && !guessedMimeType.equals(file.getMimetype())) {
 325                     intentForGuessedMimeType = new Intent(Intent.ACTION_VIEW);
 326                     intentForGuessedMimeType.setDataAndType(Uri.parse("file://"+ encodedStoragePath), guessedMimeType);
 327                     intentForGuessedMimeType.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 328                 }
 329             }
 330
 331             Intent chooserIntent = null;
 332             if (intentForGuessedMimeType != null) {
 333                 chooserIntent = Intent.createChooser(intentForGuessedMimeType, getString(R.string.actionbar_open_with));
 334             } else {
 335                 chooserIntent = Intent.createChooser(intentForSavedMimeType, getString(R.string.actionbar_open_with));
 336             }
 337
 338             startActivity(chooserIntent);
 339
 340         } else {
 341             Log_OC.wtf(TAG, "Trying to open a NULL OCFile");
 342         }
 343     }
 344
 345 }