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.AccountUtils;
  33 import com.owncloud.android.Log_OC;
  34 import com.owncloud.android.authentication.AccountAuthenticator;
  35 import com.owncloud.android.datamodel.OCFile;
  36 import com.owncloud.android.files.FileHandler;
  37
  38 import eu.alefzero.webdav.WebdavUtils;
  39
  40 /**
  41  * Activity with common behaviour for activities handling {@link OCFile}s in ownCloud {@link Account}s .
  42  *
  43  * @author David A. Velasco
  44  */
  45 public abstract class FileActivity extends SherlockFragmentActivity implements FileHandler {
  46
  47     public static final String EXTRA_FILE = "com.owncloud.android.ui.activity.FILE";
  48     public static final String EXTRA_ACCOUNT = "com.owncloud.android.ui.activity.ACCOUNT";
  49
  50     public static final String TAG = FileActivity.class.getSimpleName();
  51
  52
  53     /** OwnCloud {@link Account} where the main {@link OCFile} handled by the activity is located. */
  54     private Account mAccount;
  55
  56     /** Main {@link OCFile} handled by the activity.*/
  57     private OCFile mFile;
  58
  59     /** Flag to signal that the activity will is finishing to enforce the creation of an ownCloud {@link Account} */
  60     private boolean mRedirectingToSetupAccount = false;
  61
  62     private FileHandlerImpl mFileHandler;
  63
  64
  65     @Override
  66     protected void onCreate(Bundle savedInstanceState) {
  67         super.onCreate(savedInstanceState);
  68
  69         /// Load of saved instance state: keep this always before initDataFromCurrentAccount()
  70         if(savedInstanceState != null) {
  71             mFile = savedInstanceState.getParcelable(FileActivity.EXTRA_FILE);
  72             mAccount = savedInstanceState.getParcelable(FileActivity.EXTRA_ACCOUNT);
  73         } else {
  74             mAccount = getIntent().getParcelableExtra(FileActivity.EXTRA_ACCOUNT);
  75             mFile = getIntent().getParcelableExtra(FileActivity.EXTRA_FILE);
  76         }
  77
  78         if (mAccount != null && AccountUtils.setCurrentOwnCloudAccount(getApplicationContext(), mAccount.name)) {
  79             onAccountChanged();
  80         }
  81
  82         mFileHandler = new FileHandlerImpl();
  83     }
  84
  85
  86     /**
  87      * Validate the ownCloud {@link Account} associated to the Activity any time it is
  88      * started, and if not valid tries to move to a different Account.
  89      */
  90     @Override
  91     protected void onStart() {
  92         Log_OC.e(TAG, "onStart en FileActivity");
  93         super.onStart();
  94         /// Validate account, and try to fix if wrong
  95         if (mAccount == null || !AccountUtils.setCurrentOwnCloudAccount(getApplicationContext(), mAccount.name)) {
  96             if (!AccountUtils.accountsAreSetup(getApplicationContext())) {
  97                 /// no account available: force account creation
  98                 mAccount = null;
  99                 createFirstAccount();
 100                 mRedirectingToSetupAccount = true;
 101
 102             } else {
 103                 /// get 'last current account' as default account
 104                 mAccount = AccountUtils.getCurrentOwnCloudAccount(getApplicationContext());
 105                 onAccountChanged();
 106             }
 107         }
 108     }
 109
 110
 111     /**
 112      * Launches the account creation activity. To use when no ownCloud account is available
 113      */
 114     private void createFirstAccount() {
 115         AccountManager am = AccountManager.get(getApplicationContext());
 116         am.addAccount(AccountAuthenticator.ACCOUNT_TYPE,
 117                         AccountAuthenticator.AUTH_TOKEN_TYPE_PASSWORD,
 118                         null,
 119                         null,
 120                         this,
 121                         new AccountCreationCallback(),
 122                         null);
 123     }
 124
 125
 126     /**
 127      * {@inheritDoc}
 128      */
 129     @Override
 130     protected void onSaveInstanceState(Bundle outState) {
 131         super.onSaveInstanceState(outState);
 132         outState.putParcelable(FileActivity.EXTRA_FILE, mFile);
 133         outState.putParcelable(FileActivity.EXTRA_ACCOUNT, mAccount);
 134     }
 135
 136
 137     /**
 138      * Getter for the main {@link OCFile} handled by the activity.
 139      *
 140      * @return  Main {@link OCFile} handled by the activity.
 141      */
 142     public OCFile getFile() {
 143         return mFile;
 144     }
 145
 146
 147     /**
 148      * Setter for the main {@link OCFile} handled by the activity.
 149      *
 150      * @param file  Main {@link OCFile} to be handled by the activity.
 151      */
 152     public void setFile(OCFile file) {
 153         mFile = file;
 154     }
 155
 156
 157     /**
 158      * Getter for the ownCloud {@link Account} where the main {@link OCFile} handled by the activity is located.
 159      *
 160      * @return  OwnCloud {@link Account} where the main {@link OCFile} handled by the activity is located.
 161      */
 162     public Account getAccount() {
 163         return mAccount;
 164     }
 165
 166
 167     /**
 168      * @return  'True' when the Activity is finishing to enforce the setup of a new account.
 169      */
 170     protected boolean isRedirectingToSetupAccount() {
 171         return mRedirectingToSetupAccount;
 172     }
 173
 174
 175     /**
 176      * Helper class handling a callback from the {@link AccountManager} after the creation of
 177      * a new ownCloud {@link Account} finished, successfully or not.
 178      *
 179      * At this moment, only called after the creation of the first account.
 180      *
 181      * @author David A. Velasco
 182      */
 183     public class AccountCreationCallback implements AccountManagerCallback<Bundle> {
 184
 185         @Override
 186         public void run(AccountManagerFuture<Bundle> future) {
 187             FileActivity.this.mRedirectingToSetupAccount = false;
 188             if (future != null) {
 189                 try {
 190                     Bundle result;
 191                     result = future.getResult();
 192                     String name = result.getString(AccountManager.KEY_ACCOUNT_NAME);
 193                     String type = result.getString(AccountManager.KEY_ACCOUNT_TYPE);
 194                     if (AccountUtils.setCurrentOwnCloudAccount(getApplicationContext(), name)) {
 195                         FileActivity.this.mAccount = new Account(name, type);
 196                         FileActivity.this.onAccountChanged();
 197                     }
 198                 } catch (OperationCanceledException e) {
 199                     Log_OC.e(TAG, "Account creation canceled");
 200
 201                 } catch (Exception e) {
 202                     Log_OC.e(TAG, "Account creation finished in exception: ", e);
 203                 }
 204
 205             } else {
 206                 Log_OC.e(TAG, "Account creation callback with null bundle");
 207             }
 208             if (mAccount == null) {
 209                 finish();
 210             }
 211         }
 212
 213     }
 214
 215
 216     public void openFile(OCFile file) {
 217         mFileHandler.openFile(file);
 218     }
 219
 220
 221     /**
 222      *  Called when the ownCloud {@link Account} associated to the Activity was just updated.
 223      *
 224      *  Child classes must grant that state depending on the {@link Account} is updated.
 225      */
 226     protected abstract void onAccountChanged();
 227
 228
 229     public class FileHandlerImpl implements FileHandler {
 230
 231         public void openFile(OCFile file) {
 232             if (file != null) {
 233                 String storagePath = file.getStoragePath();
 234                 String encodedStoragePath = WebdavUtils.encodePath(storagePath);
 235
 236                 Intent intentForSavedMimeType = new Intent(Intent.ACTION_VIEW);
 237                 intentForSavedMimeType.setDataAndType(Uri.parse("file://"+ encodedStoragePath), file.getMimetype());
 238                 intentForSavedMimeType.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 239
 240                 Intent intentForGuessedMimeType = null;
 241                 if (storagePath.lastIndexOf('.') >= 0) {
 242                     String guessedMimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(storagePath.substring(storagePath.lastIndexOf('.') + 1));
 243                     if (guessedMimeType != null && !guessedMimeType.equals(file.getMimetype())) {
 244                         intentForGuessedMimeType = new Intent(Intent.ACTION_VIEW);
 245                         intentForGuessedMimeType.setDataAndType(Uri.parse("file://"+ encodedStoragePath), guessedMimeType);
 246                         intentForGuessedMimeType.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 247                     }
 248                 }
 249
 250                 Intent chooserIntent = null;
 251                 if (intentForGuessedMimeType != null) {
 252                     chooserIntent = Intent.createChooser(intentForGuessedMimeType, null);
 253                 } else {
 254                     chooserIntent = Intent.createChooser(intentForSavedMimeType, null);
 255                 }
 256
 257                 startActivity(chooserIntent);
 258
 259             } else {
 260                 Log_OC.wtf(TAG, "Trying to open a NULL OCFile");
 261             }
 262         }
 263     }
 264 }