src/de/mobilcom/debitel/cloud/android/ui/activity/UploadFilesActivity.java

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2012-2013 ownCloud Inc.
   3  *
   4  *   This program is free software: you can redistribute it and/or modify
   5  *   it under the terms of the GNU General Public License version 2,
   6  *   as published by the Free Software Foundation.
   7  *
   8  *   This program is distributed in the hope that it will be useful,
   9  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  *   GNU General Public License for more details.
  12  *
  13  *   You should have received a copy of the GNU General Public License
  14  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15  *
  16  */
  17
  18 package de.mobilcom.debitel.cloud.android.ui.activity;
  19
  20 import java.io.File;
  21
  22 import android.accounts.Account;
  23 import android.content.Intent;
  24 import android.os.AsyncTask;
  25 import android.os.Bundle;
  26 import android.os.Environment;
  27 import android.support.v4.app.DialogFragment;
  28 import android.view.View;
  29 import android.view.View.OnClickListener;
  30 import android.view.ViewGroup;
  31 import android.widget.ArrayAdapter;
  32 import android.widget.Button;
  33 import android.widget.TextView;
  34
  35 import com.actionbarsherlock.app.ActionBar;
  36 import com.actionbarsherlock.app.ActionBar.OnNavigationListener;
  37 import com.actionbarsherlock.view.MenuItem;
  38
  39 import de.mobilcom.debitel.cloud.android.Log_OC;
  40 import de.mobilcom.debitel.cloud.android.R;
  41 import de.mobilcom.debitel.cloud.android.ui.dialog.IndeterminateProgressDialog;
  42 import de.mobilcom.debitel.cloud.android.ui.fragment.ConfirmationDialogFragment;
  43 import de.mobilcom.debitel.cloud.android.ui.fragment.LocalFileListFragment;
  44 import de.mobilcom.debitel.cloud.android.ui.fragment.ConfirmationDialogFragment.ConfirmationDialogFragmentListener;
  45 import de.mobilcom.debitel.cloud.android.utils.FileStorageUtils;
  46
  47 /**
  48  * Displays local files and let the user choose what of them wants to upload
  49  * to the current ownCloud account
  50  *
  51  * @author David A. Velasco
  52  *
  53  */
  54
  55 public class UploadFilesActivity extends FileActivity implements
  56     LocalFileListFragment.ContainerActivity, OnNavigationListener, OnClickListener, ConfirmationDialogFragmentListener {
  57
  58     private ArrayAdapter<String> mDirectories;
  59     private File mCurrentDir = null;
  60     private LocalFileListFragment mFileListFragment;
  61     private Button mCancelBtn;
  62     private Button mUploadBtn;
  63     private Account mAccountOnCreation;
  64     private DialogFragment mCurrentDialog;
  65
  66     public static final String EXTRA_CHOSEN_FILES = UploadFilesActivity.class.getCanonicalName() + ".EXTRA_CHOSEN_FILES";
  67
  68     public static final int RESULT_OK_AND_MOVE = RESULT_FIRST_USER;
  69
  70     private static final String KEY_DIRECTORY_PATH = UploadFilesActivity.class.getCanonicalName() + ".KEY_DIRECTORY_PATH";
  71     private static final String TAG = "UploadFilesActivity";
  72     private static final String WAIT_DIALOG_TAG = "WAIT";
  73     private static final String QUERY_TO_MOVE_DIALOG_TAG = "QUERY_TO_MOVE";
  74
  75
  76     @Override
  77     public void onCreate(Bundle savedInstanceState) {
  78         Log_OC.d(TAG, "onCreate() start");
  79         super.onCreate(savedInstanceState);
  80
  81         if(savedInstanceState != null) {
  82             mCurrentDir = new File(savedInstanceState.getString(UploadFilesActivity.KEY_DIRECTORY_PATH));
  83         } else {
  84             mCurrentDir = Environment.getExternalStorageDirectory();
  85         }
  86
  87         mAccountOnCreation = getAccount();
  88
  89         /// USER INTERFACE
  90
  91         // Drop-down navigation
  92         mDirectories = new CustomArrayAdapter<String>(this, R.layout.sherlock_spinner_dropdown_item);
  93         File currDir = mCurrentDir;
  94         while(currDir != null && currDir.getParentFile() != null) {
  95             mDirectories.add(currDir.getName());
  96             currDir = currDir.getParentFile();
  97         }
  98         mDirectories.add(File.separator);
  99
 100         // Inflate and set the layout view
 101         setContentView(R.layout.upload_files_layout);
 102         mFileListFragment = (LocalFileListFragment) getSupportFragmentManager().findFragmentById(R.id.local_files_list);
 103
 104
 105         // Set input controllers
 106         mCancelBtn = (Button) findViewById(R.id.upload_files_btn_cancel);
 107         mCancelBtn.setOnClickListener(this);
 108         mUploadBtn = (Button) findViewById(R.id.upload_files_btn_upload);
 109         mUploadBtn.setOnClickListener(this);
 110
 111         // Set background of buttons
 112         boolean customButtons = getResources().getBoolean(R.bool.custom_buttons);
 113         if (customButtons) {
 114             mCancelBtn.setBackgroundResource(R.drawable.btn_default);
 115             mUploadBtn.setBackgroundResource(R.drawable.btn_default);
 116         }
 117
 118         // Action bar setup
 119         ActionBar actionBar = getSupportActionBar();
 120         actionBar.setHomeButtonEnabled(true);   // mandatory since Android ICS, according to the official documentation
 121         actionBar.setDisplayHomeAsUpEnabled(mCurrentDir != null && mCurrentDir.getName() != null);
 122         actionBar.setDisplayShowTitleEnabled(false);
 123         actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
 124         actionBar.setListNavigationCallbacks(mDirectories, this);
 125
 126         // wait dialog
 127         if (mCurrentDialog != null) {
 128             mCurrentDialog.dismiss();
 129             mCurrentDialog = null;
 130         }
 131
 132         Log_OC.d(TAG, "onCreate() end");
 133     }
 134
 135
 136     @Override
 137     public boolean onOptionsItemSelected(MenuItem item) {
 138         boolean retval = true;
 139         switch (item.getItemId()) {
 140             case android.R.id.home: {
 141                 if(mCurrentDir != null && mCurrentDir.getParentFile() != null){
 142                     onBackPressed();
 143                 }
 144                 break;
 145             }
 146             default:
 147                 retval = super.onOptionsItemSelected(item);
 148         }
 149         return retval;
 150     }
 151
 152
 153     @Override
 154     public boolean onNavigationItemSelected(int itemPosition, long itemId) {
 155         int i = itemPosition;
 156         while (i-- != 0) {
 157             onBackPressed();
 158         }
 159         // the next operation triggers a new call to this method, but it's necessary to
 160         // ensure that the name exposed in the action bar is the current directory when the
 161         // user selected it in the navigation list
 162         if (itemPosition != 0)
 163             getSupportActionBar().setSelectedNavigationItem(0);
 164         return true;
 165     }
 166
 167
 168     @Override
 169     public void onBackPressed() {
 170         if (mDirectories.getCount() <= 1) {
 171             finish();
 172             return;
 173         }
 174         popDirname();
 175         mFileListFragment.onNavigateUp();
 176         mCurrentDir = mFileListFragment.getCurrentDirectory();
 177
 178         if(mCurrentDir.getParentFile() == null){
 179             ActionBar actionBar = getSupportActionBar();
 180             actionBar.setDisplayHomeAsUpEnabled(false);
 181         }
 182     }
 183
 184
 185     @Override
 186     protected void onSaveInstanceState(Bundle outState) {
 187         // responsibility of restore is preferred in onCreate() before than in onRestoreInstanceState when there are Fragments involved
 188         Log_OC.d(TAG, "onSaveInstanceState() start");
 189         super.onSaveInstanceState(outState);
 190         outState.putString(UploadFilesActivity.KEY_DIRECTORY_PATH, mCurrentDir.getAbsolutePath());
 191         Log_OC.d(TAG, "onSaveInstanceState() end");
 192     }
 193
 194
 195     /**
 196      * Pushes a directory to the drop down list
 197      * @param directory to push
 198      * @throws IllegalArgumentException If the {@link File#isDirectory()} returns false.
 199      */
 200     public void pushDirname(File directory) {
 201         if(!directory.isDirectory()){
 202             throw new IllegalArgumentException("Only directories may be pushed!");
 203         }
 204         mDirectories.insert(directory.getName(), 0);
 205         mCurrentDir = directory;
 206     }
 207
 208     /**
 209      * Pops a directory name from the drop down list
 210      * @return True, unless the stack is empty
 211      */
 212     public boolean popDirname() {
 213         mDirectories.remove(mDirectories.getItem(0));
 214         return !mDirectories.isEmpty();
 215     }
 216
 217
 218     // Custom array adapter to override text colors
 219     private class CustomArrayAdapter<T> extends ArrayAdapter<T> {
 220
 221         public CustomArrayAdapter(UploadFilesActivity ctx, int view) {
 222             super(ctx, view);
 223         }
 224
 225         public View getView(int position, View convertView, ViewGroup parent) {
 226             View v = super.getView(position, convertView, parent);
 227
 228             ((TextView) v).setTextColor(getResources().getColorStateList(
 229                     android.R.color.white));
 230             return v;
 231         }
 232
 233         public View getDropDownView(int position, View convertView,
 234                 ViewGroup parent) {
 235             View v = super.getDropDownView(position, convertView, parent);
 236
 237             ((TextView) v).setTextColor(getResources().getColorStateList(
 238                     android.R.color.white));
 239
 240             return v;
 241         }
 242
 243     }
 244
 245     /**
 246      * {@inheritDoc}
 247      */
 248     @Override
 249     public void onDirectoryClick(File directory) {
 250         pushDirname(directory);
 251         ActionBar actionBar = getSupportActionBar();
 252         actionBar.setDisplayHomeAsUpEnabled(true);
 253     }
 254
 255
 256     /**
 257      * {@inheritDoc}
 258      */
 259     @Override
 260     public void onFileClick(File file) {
 261         // nothing to do
 262     }
 263
 264     /**
 265      * {@inheritDoc}
 266      */
 267     @Override
 268     public File getInitialDirectory() {
 269         return mCurrentDir;
 270     }
 271
 272
 273     /**
 274      * Performs corresponding action when user presses 'Cancel' or 'Upload' button
 275      *
 276      * TODO Make here the real request to the Upload service ; will require to receive the account and
 277      * target folder where the upload must be done in the received intent.
 278      */
 279     @Override
 280     public void onClick(View v) {
 281         if (v.getId() == R.id.upload_files_btn_cancel) {
 282             setResult(RESULT_CANCELED);
 283             finish();
 284
 285         } else if (v.getId() == R.id.upload_files_btn_upload) {
 286             new CheckAvailableSpaceTask().execute();
 287         }
 288     }
 289
 290
 291     /**
 292      * Asynchronous task checking if there is space enough to copy all the files chosen
 293      * to upload into the ownCloud local folder.
 294      *
 295      * Maybe an AsyncTask is not strictly necessary, but who really knows.
 296      *
 297      * @author David A. Velasco
 298      */
 299     private class CheckAvailableSpaceTask extends AsyncTask<Void, Void, Boolean> {
 300
 301         /**
 302          * Updates the UI before trying the movement
 303          */
 304         @Override
 305         protected void onPreExecute () {
 306             /// progress dialog and disable 'Move' button
 307             mCurrentDialog = IndeterminateProgressDialog.newInstance(R.string.wait_a_moment, false);
 308             mCurrentDialog.show(getSupportFragmentManager(), WAIT_DIALOG_TAG);
 309         }
 310
 311
 312         /**
 313          * Checks the available space
 314          *
 315          * @return     'True' if there is space enough.
 316          */
 317         @Override
 318         protected Boolean doInBackground(Void... params) {
 319             String[] checkedFilePaths = mFileListFragment.getCheckedFilePaths();
 320             long total = 0;
 321             for (int i=0; checkedFilePaths != null && i < checkedFilePaths.length ; i++) {
 322                 String localPath = checkedFilePaths[i];
 323                 File localFile = new File(localPath);
 324                 total += localFile.length();
 325             }
 326             return (FileStorageUtils.getUsableSpace(mAccountOnCreation.name) >= total);
 327         }
 328
 329         /**
 330          * Updates the activity UI after the check of space is done.
 331          *
 332          * If there is not space enough. shows a new dialog to query the user if wants to move the files instead
 333          * of copy them.
 334          *
 335          * @param result        'True' when there is space enough to copy all the selected files.
 336          */
 337         @Override
 338         protected void onPostExecute(Boolean result) {
 339             mCurrentDialog.dismiss();
 340             mCurrentDialog = null;
 341
 342             if (result) {
 343                 // return the list of selected files (success)
 344                 Intent data = new Intent();
 345                 data.putExtra(EXTRA_CHOSEN_FILES, mFileListFragment.getCheckedFilePaths());
 346                 setResult(RESULT_OK, data);
 347                 finish();
 348
 349             } else {
 350                 // show a dialog to query the user if wants to move the selected files to the ownCloud folder instead of copying
 351                 String[] args = {getString(R.string.app_name)};
 352                 ConfirmationDialogFragment dialog = ConfirmationDialogFragment.newInstance(R.string.upload_query_move_foreign_files, args, R.string.common_yes, -1, R.string.common_no);
 353                 dialog.setOnConfirmationListener(UploadFilesActivity.this);
 354                 dialog.show(getSupportFragmentManager(), QUERY_TO_MOVE_DIALOG_TAG);
 355             }
 356         }
 357     }
 358
 359     @Override
 360     public void onConfirmation(String callerTag) {
 361         Log_OC.d(TAG, "Positive button in dialog was clicked; dialog tag is " + callerTag);
 362         if (callerTag.equals(QUERY_TO_MOVE_DIALOG_TAG)) {
 363             // return the list of selected files to the caller activity (success), signaling that they should be moved to the ownCloud folder, instead of copied
 364             Intent data = new Intent();
 365             data.putExtra(EXTRA_CHOSEN_FILES, mFileListFragment.getCheckedFilePaths());
 366             setResult(RESULT_OK_AND_MOVE, data);
 367             finish();
 368         }
 369     }
 370
 371
 372     @Override
 373     public void onNeutral(String callerTag) {
 374         Log_OC.d(TAG, "Phantom neutral button in dialog was clicked; dialog tag is " + callerTag);
 375     }
 376
 377
 378     @Override
 379     public void onCancel(String callerTag) {
 380         /// nothing to do; don't finish, let the user change the selection
 381         Log_OC.d(TAG, "Negative button in dialog was clicked; dialog tag is " + callerTag);
 382     }
 383
 384
 385     @Override
 386     protected void onAccountSet(boolean stateWasRecovered) {
 387         if (getAccount() != null) {
 388             if (!mAccountOnCreation.equals(getAccount())) {
 389                 setResult(RESULT_CANCELED);
 390                 finish();
 391             }
 392
 393         } else {
 394             Log_OC.wtf(TAG, "onAccountChanged was called with NULL account associated!");
 395             setResult(RESULT_CANCELED);
 396             finish();
 397         }
 398     }
 399
 400
 401 }