src/com/owncloud/android/ui/activity/UploadFilesActivity.java

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2011  Bartek Przybylski
   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 as published by
   6  *   the Free Software Foundation, either version 3 of the License, or
   7  *   (at your option) any later version.
   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 java.io.File;
  22
  23 import android.accounts.Account;
  24 import android.content.Intent;
  25 import android.os.AsyncTask;
  26 import android.os.Bundle;
  27 import android.os.Environment;
  28 import android.support.v4.app.DialogFragment;
  29 import android.util.Log;
  30 import android.view.View;
  31 import android.view.View.OnClickListener;
  32 import android.view.ViewGroup;
  33 import android.widget.ArrayAdapter;
  34 import android.widget.Button;
  35 import android.widget.TextView;
  36
  37 import com.actionbarsherlock.app.ActionBar;
  38 import com.actionbarsherlock.app.ActionBar.OnNavigationListener;
  39 import com.actionbarsherlock.app.SherlockFragmentActivity;
  40 import com.actionbarsherlock.view.MenuItem;
  41 import com.owncloud.android.ui.dialog.IndeterminateProgressDialog;
  42 import com.owncloud.android.ui.fragment.ConfirmationDialogFragment;
  43 import com.owncloud.android.ui.fragment.LocalFileListFragment;
  44 import com.owncloud.android.ui.fragment.ConfirmationDialogFragment.ConfirmationDialogFragmentListener;
  45 import com.owncloud.android.utils.FileStorageUtils;
  46
  47 import com.owncloud.android.R;
  48
  49 /**
  50  * Displays local files and let the user choose what of them wants to upload
  51  * to the current ownCloud account
  52  *
  53  * @author David A. Velasco
  54  *
  55  */
  56
  57 public class UploadFilesActivity extends SherlockFragmentActivity implements
  58     LocalFileListFragment.ContainerActivity, OnNavigationListener, OnClickListener, ConfirmationDialogFragmentListener {
  59
  60     private ArrayAdapter<String> mDirectories;
  61     private File mCurrentDir = null;
  62     private LocalFileListFragment mFileListFragment;
  63     private Button mCancelBtn;
  64     private Button mUploadBtn;
  65     private Account mAccount;
  66     private DialogFragment mCurrentDialog;
  67
  68     public static final String EXTRA_ACCOUNT = UploadFilesActivity.class.getCanonicalName() + ".EXTRA_ACCOUNT";
  69     public static final String EXTRA_CHOSEN_FILES = UploadFilesActivity.class.getCanonicalName() + ".EXTRA_CHOSEN_FILES";
  70
  71     public static final int RESULT_OK_AND_MOVE = RESULT_FIRST_USER;
  72
  73     private static final String KEY_DIRECTORY_PATH = UploadFilesActivity.class.getCanonicalName() + ".KEY_DIRECTORY_PATH";
  74     private static final String TAG = "UploadFilesActivity";
  75     private static final String WAIT_DIALOG_TAG = "WAIT";
  76     private static final String QUERY_TO_MOVE_DIALOG_TAG = "QUERY_TO_MOVE";
  77
  78
  79     @Override
  80     public void onCreate(Bundle savedInstanceState) {
  81         Log.d(TAG, "onCreate() start");
  82         super.onCreate(savedInstanceState);
  83
  84         if(savedInstanceState != null) {
  85             mCurrentDir = new File(savedInstanceState.getString(UploadFilesActivity.KEY_DIRECTORY_PATH));
  86         } else {
  87             mCurrentDir = Environment.getExternalStorageDirectory();
  88         }
  89
  90         mAccount = getIntent().getParcelableExtra(EXTRA_ACCOUNT);
  91
  92         /// USER INTERFACE
  93
  94         // Drop-down navigation
  95         mDirectories = new CustomArrayAdapter<String>(this, R.layout.sherlock_spinner_dropdown_item);
  96         File currDir = mCurrentDir;
  97         while(currDir != null && currDir.getParentFile() != null) {
  98             mDirectories.add(currDir.getName());
  99             currDir = currDir.getParentFile();
 100         }
 101         mDirectories.add(File.separator);
 102
 103         // Inflate and set the layout view
 104         setContentView(R.layout.upload_files_layout);
 105         mFileListFragment = (LocalFileListFragment) getSupportFragmentManager().findFragmentById(R.id.local_files_list);
 106
 107
 108         // Set input controllers
 109         mCancelBtn = (Button) findViewById(R.id.upload_files_btn_cancel);
 110         mCancelBtn.setOnClickListener(this);
 111         mUploadBtn = (Button) findViewById(R.id.upload_files_btn_upload);
 112         mUploadBtn.setOnClickListener(this);
 113
 114         // Action bar setup
 115         ActionBar actionBar = getSupportActionBar();
 116         actionBar.setHomeButtonEnabled(true);   // mandatory since Android ICS, according to the official documentation
 117         actionBar.setDisplayHomeAsUpEnabled(mCurrentDir != null && mCurrentDir.getName() != null);
 118         actionBar.setDisplayShowTitleEnabled(false);
 119         actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
 120         actionBar.setListNavigationCallbacks(mDirectories, this);
 121
 122         // wait dialog
 123         if (mCurrentDialog != null) {
 124             mCurrentDialog.dismiss();
 125             mCurrentDialog = null;
 126         }
 127
 128         Log.d(TAG, "onCreate() end");
 129     }
 130
 131
 132     @Override
 133     public boolean onOptionsItemSelected(MenuItem item) {
 134         boolean retval = true;
 135         switch (item.getItemId()) {
 136             case android.R.id.home: {
 137                 if(mCurrentDir != null && mCurrentDir.getParentFile() != null){
 138                     onBackPressed();
 139                 }
 140                 break;
 141             }
 142             default:
 143                 retval = onOptionsItemSelected(item);
 144         }
 145         return retval;
 146     }
 147
 148
 149     @Override
 150     public boolean onNavigationItemSelected(int itemPosition, long itemId) {
 151         int i = itemPosition;
 152         while (i-- != 0) {
 153             onBackPressed();
 154         }
 155         // the next operation triggers a new call to this method, but it's necessary to
 156         // ensure that the name exposed in the action bar is the current directory when the
 157         // user selected it in the navigation list
 158         if (itemPosition != 0)
 159             getSupportActionBar().setSelectedNavigationItem(0);
 160         return true;
 161     }
 162
 163
 164     @Override
 165     public void onBackPressed() {
 166         if (mDirectories.getCount() <= 1) {
 167             finish();
 168             return;
 169         }
 170         popDirname();
 171         mFileListFragment.onNavigateUp();
 172         mCurrentDir = mFileListFragment.getCurrentDirectory();
 173
 174         if(mCurrentDir.getParentFile() == null){
 175             ActionBar actionBar = getSupportActionBar();
 176             actionBar.setDisplayHomeAsUpEnabled(false);
 177         }
 178     }
 179
 180
 181     @Override
 182     protected void onSaveInstanceState(Bundle outState) {
 183         // responsibility of restore is preferred in onCreate() before than in onRestoreInstanceState when there are Fragments involved
 184         Log.d(TAG, "onSaveInstanceState() start");
 185         super.onSaveInstanceState(outState);
 186         outState.putString(UploadFilesActivity.KEY_DIRECTORY_PATH, mCurrentDir.getAbsolutePath());
 187         Log.d(TAG, "onSaveInstanceState() end");
 188     }
 189
 190
 191     /**
 192      * Pushes a directory to the drop down list
 193      * @param directory to push
 194      * @throws IllegalArgumentException If the {@link File#isDirectory()} returns false.
 195      */
 196     public void pushDirname(File directory) {
 197         if(!directory.isDirectory()){
 198             throw new IllegalArgumentException("Only directories may be pushed!");
 199         }
 200         mDirectories.insert(directory.getName(), 0);
 201         mCurrentDir = directory;
 202     }
 203
 204     /**
 205      * Pops a directory name from the drop down list
 206      * @return True, unless the stack is empty
 207      */
 208     public boolean popDirname() {
 209         mDirectories.remove(mDirectories.getItem(0));
 210         return !mDirectories.isEmpty();
 211     }
 212
 213
 214     // Custom array adapter to override text colors
 215     private class CustomArrayAdapter<T> extends ArrayAdapter<T> {
 216
 217         public CustomArrayAdapter(UploadFilesActivity ctx, int view) {
 218             super(ctx, view);
 219         }
 220
 221         public View getView(int position, View convertView, ViewGroup parent) {
 222             View v = super.getView(position, convertView, parent);
 223
 224             ((TextView) v).setTextColor(getResources().getColorStateList(
 225                     android.R.color.white));
 226             return v;
 227         }
 228
 229         public View getDropDownView(int position, View convertView,
 230                 ViewGroup parent) {
 231             View v = super.getDropDownView(position, convertView, parent);
 232
 233             ((TextView) v).setTextColor(getResources().getColorStateList(
 234                     android.R.color.white));
 235
 236             return v;
 237         }
 238
 239     }
 240
 241     /**
 242      * {@inheritDoc}
 243      */
 244     @Override
 245     public void onDirectoryClick(File directory) {
 246         pushDirname(directory);
 247         ActionBar actionBar = getSupportActionBar();
 248         actionBar.setDisplayHomeAsUpEnabled(true);
 249     }
 250
 251
 252     /**
 253      * {@inheritDoc}
 254      */
 255     @Override
 256     public void onFileClick(File file) {
 257         // nothing to do
 258     }
 259
 260     /**
 261      * {@inheritDoc}
 262      */
 263     @Override
 264     public File getInitialDirectory() {
 265         return mCurrentDir;
 266     }
 267
 268
 269     /**
 270      * Performs corresponding action when user presses 'Cancel' or 'Upload' button
 271      *
 272      * TODO Make here the real request to the Upload service ; will require to receive the account and
 273      * target folder where the upload must be done in the received intent.
 274      */
 275     @Override
 276     public void onClick(View v) {
 277         if (v.getId() == R.id.upload_files_btn_cancel) {
 278             setResult(RESULT_CANCELED);
 279             finish();
 280
 281         } else if (v.getId() == R.id.upload_files_btn_upload) {
 282             new CheckAvailableSpaceTask().execute();
 283         }
 284     }
 285
 286
 287     /**
 288      * Asynchronous task checking if there is space enough to copy all the files chosen
 289      * to upload into the ownCloud local folder.
 290      *
 291      * Maybe an AsyncTask is not strictly necessary, but who really knows.
 292      *
 293      * @author David A. Velasco
 294      */
 295     private class CheckAvailableSpaceTask extends AsyncTask<Void, Void, Boolean> {
 296
 297         /**
 298          * Updates the UI before trying the movement
 299          */
 300         @Override
 301         protected void onPreExecute () {
 302             /// progress dialog and disable 'Move' button
 303             mCurrentDialog = IndeterminateProgressDialog.newInstance(R.string.wait_a_moment, false);
 304             mCurrentDialog.show(getSupportFragmentManager(), WAIT_DIALOG_TAG);
 305         }
 306
 307
 308         /**
 309          * Checks the available space
 310          *
 311          * @return     'True' if there is space enough.
 312          */
 313         @Override
 314         protected Boolean doInBackground(Void... params) {
 315             String[] checkedFilePaths = mFileListFragment.getCheckedFilePaths();
 316             long total = 0;
 317             for (int i=0; checkedFilePaths != null && i < checkedFilePaths.length ; i++) {
 318                 String localPath = checkedFilePaths[i];
 319                 File localFile = new File(localPath);
 320                 total += localFile.length();
 321             }
 322             return (FileStorageUtils.getUsableSpace(mAccount.name) >= total);
 323         }
 324
 325         /**
 326          * Updates the activity UI after the check of space is done.
 327          *
 328          * If there is not space enough. shows a new dialog to query the user if wants to move the files instead
 329          * of copy them.
 330          *
 331          * @param result        'True' when there is space enough to copy all the selected files.
 332          */
 333         @Override
 334         protected void onPostExecute(Boolean result) {
 335             mCurrentDialog.dismiss();
 336             mCurrentDialog = null;
 337
 338             if (result) {
 339                 // return the list of selected files (success)
 340                 Intent data = new Intent();
 341                 data.putExtra(EXTRA_CHOSEN_FILES, mFileListFragment.getCheckedFilePaths());
 342                 setResult(RESULT_OK, data);
 343                 finish();
 344
 345             } else {
 346                 // show a dialog to query the user if wants to move the selected files to the ownCloud folder instead of copying
 347                 String[] args = {getString(R.string.app_name)};
 348                 ConfirmationDialogFragment dialog = ConfirmationDialogFragment.newInstance(R.string.upload_query_move_foreign_files, args, R.string.common_yes, -1, R.string.common_no);
 349                 dialog.setOnConfirmationListener(UploadFilesActivity.this);
 350                 mCurrentDialog = dialog;
 351                 mCurrentDialog.show(getSupportFragmentManager(), QUERY_TO_MOVE_DIALOG_TAG);
 352             }
 353         }
 354     }
 355
 356     @Override
 357     public void onConfirmation(String callerTag) {
 358         Log.d(TAG, "Positive button in dialog was clicked; dialog tag is " + callerTag);
 359         if (callerTag.equals(QUERY_TO_MOVE_DIALOG_TAG)) {
 360             // return the list of selected files to the caller activity (success), signaling that they should be moved to the ownCloud folder, instead of copied
 361             Intent data = new Intent();
 362             data.putExtra(EXTRA_CHOSEN_FILES, mFileListFragment.getCheckedFilePaths());
 363             setResult(RESULT_OK_AND_MOVE, data);
 364             finish();
 365         }
 366         mCurrentDialog.dismiss();
 367         mCurrentDialog = null;
 368     }
 369
 370
 371     @Override
 372     public void onNeutral(String callerTag) {
 373         Log.d(TAG, "Phantom neutral button in dialog was clicked; dialog tag is " + callerTag);
 374         mCurrentDialog.dismiss();
 375         mCurrentDialog = null;
 376     }
 377
 378
 379     @Override
 380     public void onCancel(String callerTag) {
 381         /// nothing to do; don't finish, let the user change the selection
 382         Log.d(TAG, "Negative button in dialog was clicked; dialog tag is " + callerTag);
 383         mCurrentDialog.dismiss();
 384         mCurrentDialog = null;
 385     }
 386
 387
 388 }