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     /** Flag to signal if the server supports the Share API */
  75     private boolean mIsSharedSupported;
  76
  77
  78
  79
  80     /**
  81      * Loads the ownCloud {@link Account} and main {@link OCFile} to be handled by the instance of
  82      * the {@link FileActivity}.
  83      *
  84      * Grants that a valid ownCloud {@link Account} is associated to the instance, or that the user
  85      * is requested to create a new one.
  86      */
  87     @Override
  88     protected void onCreate(Bundle savedInstanceState) {
  89         super.onCreate(savedInstanceState);
  90
  91         Account account;
  92         if(savedInstanceState != null) {
  93             account = savedInstanceState.getParcelable(FileActivity.EXTRA_ACCOUNT);
  94             mFile = savedInstanceState.getParcelable(FileActivity.EXTRA_FILE);
  95             mFromNotification = savedInstanceState.getBoolean(FileActivity.EXTRA_FROM_NOTIFICATION);
  96         } else {
  97             account = getIntent().getParcelableExtra(FileActivity.EXTRA_ACCOUNT);
  98             mFile = getIntent().getParcelableExtra(FileActivity.EXTRA_FILE);
  99             mFromNotification = getIntent().getBooleanExtra(FileActivity.EXTRA_FROM_NOTIFICATION, false);
 100         }
 101
 102         setAccount(account, savedInstanceState != null);
 103     }
 104
 105
 106     /**
 107      *  Since ownCloud {@link Account}s can be managed from the system setting menu,
 108      *  the existence of the {@link Account} associated to the instance must be checked
 109      *  every time it is restarted.
 110      */
 111     @Override
 112     protected void onRestart() {
 113         super.onRestart();
 114         boolean validAccount = (mAccount != null && AccountUtils.setCurrentOwnCloudAccount(getApplicationContext(), mAccount.name));
 115         if (!validAccount) {
 116             swapToDefaultAccount();
 117         }
 118
 119     }
 120
 121
 122     @Override
 123     protected void onStart() {
 124         super.onStart();
 125         if (mAccountWasSet) {
 126             onAccountSet(mAccountWasRestored);
 127         }
 128     }
 129
 130
 131     /**
 132      *  Sets and validates the ownCloud {@link Account} associated to the Activity.
 133      *
 134      *  If not valid, tries to swap it for other valid and existing ownCloud {@link Account}.
 135      *
 136      *  POSTCONDITION: updates {@link #mAccountWasSet} and {@link #mAccountWasRestored}.
 137      *
 138      *  @param account          New {@link Account} to set.
 139      *  @param savedAccount     When 'true', account was retrieved from a saved instance state.
 140      */
 141     private void setAccount(Account account, boolean savedAccount) {
 142         Account oldAccount = mAccount;
 143         boolean validAccount = (account != null && AccountUtils.setCurrentOwnCloudAccount(getApplicationContext(), account.name));
 144         if (validAccount) {
 145             mAccount = account;
 146             mAccountWasSet = true;
 147             mAccountWasRestored = (savedAccount || mAccount.equals(oldAccount));
 148
 149         } else {
 150             swapToDefaultAccount();
 151         }
 152     }
 153
 154
 155     /**
 156      *  Tries to swap the current ownCloud {@link Account} for other valid and existing.
 157      *
 158      *  If no valid ownCloud {@link Account} exists, the the user is requested
 159      *  to create a new ownCloud {@link Account}.
 160      *
 161      *  POSTCONDITION: updates {@link #mAccountWasSet} and {@link #mAccountWasRestored}.
 162      *
 163      *  @return     'True' if the checked {@link Account} was valid.
 164      */
 165     private void swapToDefaultAccount() {
 166         // default to the most recently used account
 167         AccountManager accountManager = AccountManager.get(this);
 168         Account newAccount  = AccountUtils.getCurrentOwnCloudAccount(getApplicationContext());
 169         if (newAccount == null) {
 170             /// no account available: force account creation
 171             createFirstAccount();
 172             mRedirectingToSetupAccount = true;
 173             mAccountWasSet = false;
 174             mAccountWasRestored = false;
 175
 176         } else {
 177             mAccountWasSet = true;
 178             mAccountWasRestored = (newAccount.equals(mAccount));
 179             mAccount = newAccount;
 180         }
 181         setIsSharedSupported( Boolean.getBoolean(accountManager.getUserData(mAccount, OwnCloudAccount.Constants.KEY_SUPPORTS_SHARE_API)));
 182     }
 183
 184
 185     /**
 186      * Launches the account creation activity. To use when no ownCloud account is available
 187      */
 188     private void createFirstAccount() {
 189         AccountManager am = AccountManager.get(getApplicationContext());
 190         am.addAccount(MainApp.getAccountType(),
 191                         null,
 192                         null,
 193                         null,
 194                         this,
 195                         new AccountCreationCallback(),
 196                         null);
 197     }
 198
 199
 200     /**
 201      * {@inheritDoc}
 202      */
 203     @Override
 204     protected void onSaveInstanceState(Bundle outState) {
 205         super.onSaveInstanceState(outState);
 206         outState.putParcelable(FileActivity.EXTRA_FILE, mFile);
 207         outState.putParcelable(FileActivity.EXTRA_ACCOUNT, mAccount);
 208         outState.putBoolean(FileActivity.EXTRA_FROM_NOTIFICATION, mFromNotification);
 209     }
 210
 211
 212     /**
 213      * Getter for the main {@link OCFile} handled by the activity.
 214      *
 215      * @return  Main {@link OCFile} handled by the activity.
 216      */
 217     public OCFile getFile() {
 218         return mFile;
 219     }
 220
 221
 222     /**
 223      * Setter for the main {@link OCFile} handled by the activity.
 224      *
 225      * @param file  Main {@link OCFile} to be handled by the activity.
 226      */
 227     public void setFile(OCFile file) {
 228         mFile = file;
 229     }
 230
 231
 232     /**
 233      * Getter for the ownCloud {@link Account} where the main {@link OCFile} handled by the activity is located.
 234      *
 235      * @return  OwnCloud {@link Account} where the main {@link OCFile} handled by the activity is located.
 236      */
 237     public Account getAccount() {
 238         return mAccount;
 239     }
 240
 241     /**
 242      * @return Value of mFromNotification: True if the Activity is launched by a notification
 243      */
 244     public boolean fromNotification() {
 245         return mFromNotification;
 246     }
 247
 248     /**
 249      * @return  'True' when the Activity is finishing to enforce the setup of a new account.
 250      */
 251     protected boolean isRedirectingToSetupAccount() {
 252         return mRedirectingToSetupAccount;
 253     }
 254
 255
 256     /**
 257      *  @return 'True' if the server supports the Share API
 258      */
 259     public boolean isSharedSupported() {
 260         return mIsSharedSupported;
 261     }
 262
 263
 264     public void setIsSharedSupported(boolean mIsSharedSupported) {
 265         this.mIsSharedSupported = mIsSharedSupported;
 266     }
 267
 268     /**
 269      * Helper class handling a callback from the {@link AccountManager} after the creation of
 270      * a new ownCloud {@link Account} finished, successfully or not.
 271      *
 272      * At this moment, only called after the creation of the first account.
 273      *
 274      * @author David A. Velasco
 275      */
 276     public class AccountCreationCallback implements AccountManagerCallback<Bundle> {
 277
 278         @Override
 279         public void run(AccountManagerFuture<Bundle> future) {
 280             FileActivity.this.mRedirectingToSetupAccount = false;
 281             boolean accountWasSet = false;
 282             if (future != null) {
 283                 try {
 284                     Bundle result;
 285                     result = future.getResult();
 286                     String name = result.getString(AccountManager.KEY_ACCOUNT_NAME);
 287                     String type = result.getString(AccountManager.KEY_ACCOUNT_TYPE);
 288                     if (AccountUtils.setCurrentOwnCloudAccount(getApplicationContext(), name)) {
 289                         setAccount(new Account(name, type), false);
 290                         accountWasSet = true;
 291                     }
 292                 } catch (OperationCanceledException e) {
 293                     Log_OC.d(TAG, "Account creation canceled");
 294
 295                 } catch (Exception e) {
 296                     Log_OC.e(TAG, "Account creation finished in exception: ", e);
 297                 }
 298
 299             } else {
 300                 Log_OC.e(TAG, "Account creation callback with null bundle");
 301             }
 302             if (!accountWasSet) {
 303                 moveTaskToBack(true);
 304             }
 305         }
 306
 307     }
 308
 309
 310     /**
 311      *  Called when the ownCloud {@link Account} associated to the Activity was just updated.
 312      *
 313      *  Child classes must grant that state depending on the {@link Account} is updated.
 314      */
 315     protected abstract void onAccountSet(boolean stateWasRecovered);
 316
 317
 318
 319     public void openFile(OCFile file) {
 320         if (file != null) {
 321             String storagePath = file.getStoragePath();
 322             String encodedStoragePath = WebdavUtils.encodePath(storagePath);
 323
 324             Intent intentForSavedMimeType = new Intent(Intent.ACTION_VIEW);
 325             intentForSavedMimeType.setDataAndType(Uri.parse("file://"+ encodedStoragePath), file.getMimetype());
 326             intentForSavedMimeType.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 327
 328             Intent intentForGuessedMimeType = null;
 329             if (storagePath.lastIndexOf('.') >= 0) {
 330                 String guessedMimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(storagePath.substring(storagePath.lastIndexOf('.') + 1));
 331                 if (guessedMimeType != null && !guessedMimeType.equals(file.getMimetype())) {
 332                     intentForGuessedMimeType = new Intent(Intent.ACTION_VIEW);
 333                     intentForGuessedMimeType.setDataAndType(Uri.parse("file://"+ encodedStoragePath), guessedMimeType);
 334                     intentForGuessedMimeType.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 335                 }
 336             }
 337
 338             Intent chooserIntent = null;
 339             if (intentForGuessedMimeType != null) {
 340                 chooserIntent = Intent.createChooser(intentForGuessedMimeType, getString(R.string.actionbar_open_with));
 341             } else {
 342                 chooserIntent = Intent.createChooser(intentForSavedMimeType, getString(R.string.actionbar_open_with));
 343             }
 344
 345             startActivity(chooserIntent);
 346
 347         } else {
 348             Log_OC.wtf(TAG, "Trying to open a NULL OCFile");
 349         }
 350     }
 351
 352 }