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