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