src/com/owncloud/android/ui/preview/PreviewImageActivity.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 as published by
   6  *   the Free Software Foundation, either version 2 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 package com.owncloud.android.ui.preview;
  19
  20 import android.accounts.Account;
  21 import android.app.Dialog;
  22 import android.app.ProgressDialog;
  23 import android.content.BroadcastReceiver;
  24 import android.content.ComponentName;
  25 import android.content.Context;
  26 import android.content.Intent;
  27 import android.content.IntentFilter;
  28 import android.content.ServiceConnection;
  29 import android.os.Bundle;
  30 import android.os.IBinder;
  31 import android.support.v4.view.ViewPager;
  32 import android.util.Log;
  33
  34 import com.actionbarsherlock.app.ActionBar;
  35 import com.actionbarsherlock.app.SherlockFragmentActivity;
  36 import com.actionbarsherlock.view.MenuItem;
  37 import com.owncloud.android.datamodel.DataStorageManager;
  38 import com.owncloud.android.datamodel.FileDataStorageManager;
  39 import com.owncloud.android.datamodel.OCFile;
  40 import com.owncloud.android.files.services.FileDownloader;
  41 import com.owncloud.android.files.services.FileDownloader.FileDownloaderBinder;
  42 import com.owncloud.android.files.services.FileUploader;
  43 import com.owncloud.android.files.services.FileUploader.FileUploaderBinder;
  44 import com.owncloud.android.ui.activity.FileDetailActivity;
  45 import com.owncloud.android.ui.fragment.FileDetailFragment;
  46 import com.owncloud.android.ui.fragment.FileFragment;
  47
  48 import com.owncloud.android.AccountUtils;
  49 import com.owncloud.android.R;
  50
  51 /**
  52  *  Used as an utility to preview image files contained in an ownCloud account.
  53  *
  54  *  @author David A. Velasco
  55  */
  56 public class PreviewImageActivity extends SherlockFragmentActivity implements FileFragment.ContainerActivity, ViewPager.OnPageChangeListener {
  57
  58     public static final int DIALOG_SHORT_WAIT = 0;
  59
  60     public static final String TAG = PreviewImageActivity.class.getSimpleName();
  61
  62     public static final String KEY_WAITING_TO_PREVIEW = "WAITING_TO_PREVIEW";
  63     private static final String KEY_WAITING_FOR_BINDER = "WAITING_FOR_BINDER";
  64
  65     private OCFile mFile;
  66     private OCFile mParentFolder;
  67     private Account mAccount;
  68     private DataStorageManager mStorageManager;
  69
  70     private ViewPager mViewPager;
  71     private PreviewImagePagerAdapter mPreviewImagePagerAdapter;
  72
  73     private FileDownloaderBinder mDownloaderBinder = null;
  74     private ServiceConnection mDownloadConnection, mUploadConnection = null;
  75     private FileUploaderBinder mUploaderBinder = null;
  76
  77     private boolean mRequestWaitingForBinder;
  78
  79     private DownloadFinishReceiver mDownloadFinishReceiver;
  80
  81
  82     @Override
  83     protected void onCreate(Bundle savedInstanceState) {
  84         super.onCreate(savedInstanceState);
  85
  86         mFile = getIntent().getParcelableExtra(FileDetailFragment.EXTRA_FILE);
  87         mAccount = getIntent().getParcelableExtra(FileDetailFragment.EXTRA_ACCOUNT);
  88         if (mFile == null) {
  89             throw new IllegalStateException("Instanced with a NULL OCFile");
  90         }
  91         if (mAccount == null) {
  92             throw new IllegalStateException("Instanced with a NULL ownCloud Account");
  93         }
  94         if (!mFile.isImage()) {
  95             throw new IllegalArgumentException("Non-image file passed as argument");
  96         }
  97
  98         setContentView(R.layout.preview_image_activity);
  99
 100         ActionBar actionBar = getSupportActionBar();
 101         actionBar.setDisplayHomeAsUpEnabled(true);
 102         actionBar.setTitle(mFile.getFileName());
 103
 104         mStorageManager = new FileDataStorageManager(mAccount, getContentResolver());
 105         mParentFolder = mStorageManager.getFileById(mFile.getParentId());
 106         if (mParentFolder == null) {
 107             // should not be necessary
 108             mParentFolder = mStorageManager.getFileByPath(OCFile.PATH_SEPARATOR);
 109         }
 110
 111         if (savedInstanceState != null) {
 112             mRequestWaitingForBinder = savedInstanceState.getBoolean(KEY_WAITING_FOR_BINDER);
 113         } else {
 114             mRequestWaitingForBinder = false;
 115         }
 116
 117         createViewPager();
 118
 119         mDownloadConnection = new PreviewImageServiceConnection();
 120         bindService(new Intent(this, FileDownloader.class), mDownloadConnection, Context.BIND_AUTO_CREATE);
 121         mUploadConnection = new PreviewImageServiceConnection();
 122         bindService(new Intent(this, FileUploader.class), mUploadConnection, Context.BIND_AUTO_CREATE);
 123
 124     }
 125
 126     private void createViewPager() {
 127         mPreviewImagePagerAdapter = new PreviewImagePagerAdapter(getSupportFragmentManager(), mParentFolder, mAccount, mStorageManager);
 128         mViewPager = (ViewPager) findViewById(R.id.fragmentPager);
 129         int position = mPreviewImagePagerAdapter.getFilePosition(mFile);
 130         position = (position >= 0) ? position : 0;
 131         mViewPager.setAdapter(mPreviewImagePagerAdapter);
 132         mViewPager.setOnPageChangeListener(this);
 133         Log.e(TAG, "Setting initial position " + position);
 134         mViewPager.setCurrentItem(position);
 135         if (position == 0 && !mFile.isDown()) {
 136             // this is necessary because mViewPager.setCurrentItem(0) just after setting the adapter does not result in a call to #onPageSelected(0)
 137             mRequestWaitingForBinder = true;
 138         }
 139     }
 140
 141
 142     @Override
 143     public void onStart() {
 144         super.onStart();
 145         Log.e(TAG, "PREVIEW ACTIVITY ON START");
 146     }
 147
 148     @Override
 149     protected void onSaveInstanceState(Bundle outState) {
 150         super.onSaveInstanceState(outState);
 151         outState.putBoolean(KEY_WAITING_FOR_BINDER, mRequestWaitingForBinder);
 152     }
 153
 154
 155     /** Defines callbacks for service binding, passed to bindService() */
 156     private class PreviewImageServiceConnection implements ServiceConnection {
 157
 158         @Override
 159         public void onServiceConnected(ComponentName component, IBinder service) {
 160
 161             if (component.equals(new ComponentName(PreviewImageActivity.this, FileDownloader.class))) {
 162                 Log.e(TAG, "PREVIEW_IMAGE Download service connected");
 163                 mDownloaderBinder = (FileDownloaderBinder) service;
 164                 if (mRequestWaitingForBinder) {
 165                     mRequestWaitingForBinder = false;
 166                     Log.e(TAG, "Simulating reselection of current page after connection of download binder");
 167                     onPageSelected(mViewPager.getCurrentItem());
 168                 }
 169
 170             } else if (component.equals(new ComponentName(PreviewImageActivity.this, FileUploader.class))) {
 171                 Log.d(TAG, "Upload service connected");
 172                 mUploaderBinder = (FileUploaderBinder) service;
 173             } else {
 174                 return;
 175             }
 176
 177         }
 178
 179         @Override
 180         public void onServiceDisconnected(ComponentName component) {
 181             if (component.equals(new ComponentName(PreviewImageActivity.this, FileDownloader.class))) {
 182                 Log.d(TAG, "Download service suddenly disconnected");
 183                 mDownloaderBinder = null;
 184             } else if (component.equals(new ComponentName(PreviewImageActivity.this, FileUploader.class))) {
 185                 Log.d(TAG, "Upload service suddenly disconnected");
 186                 mUploaderBinder = null;
 187             }
 188         }
 189     };
 190
 191
 192     @Override
 193     public void onDestroy() {
 194         super.onDestroy();
 195         if (mDownloadConnection != null) {
 196             unbindService(mDownloadConnection);
 197             mDownloadConnection = null;
 198         }
 199         if (mUploadConnection != null) {
 200             unbindService(mUploadConnection);
 201             mUploadConnection = null;
 202         }
 203     }
 204
 205
 206     @Override
 207     public boolean onOptionsItemSelected(MenuItem item) {
 208         boolean returnValue = false;
 209
 210         switch(item.getItemId()){
 211         case android.R.id.home:
 212             backToDisplayActivity();
 213             returnValue = true;
 214             break;
 215         default:
 216                 returnValue = super.onOptionsItemSelected(item);
 217         }
 218
 219         return returnValue;
 220     }
 221
 222
 223     @Override
 224     protected void onResume() {
 225         super.onResume();
 226         Log.e(TAG, "PREVIEW ACTIVITY ONRESUME");
 227         mDownloadFinishReceiver = new DownloadFinishReceiver();
 228         IntentFilter filter = new IntentFilter(FileDownloader.DOWNLOAD_FINISH_MESSAGE);
 229         registerReceiver(mDownloadFinishReceiver, filter);
 230     }
 231
 232
 233     @Override
 234     protected void onPostResume() {
 235         super.onPostResume();
 236         Log.e(TAG, "PREVIEW ACTIVITY ONPOSTRESUME");
 237     }
 238
 239     @Override
 240     public void onPause() {
 241         super.onPause();
 242         unregisterReceiver(mDownloadFinishReceiver);
 243         mDownloadFinishReceiver = null;
 244     }
 245
 246
 247     private void backToDisplayActivity() {
 248         /*
 249         Intent intent = new Intent(this, FileDisplayActivity.class);
 250         intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
 251         intent.putExtra(FileDetailFragment.EXTRA_FILE, mFile);
 252         intent.putExtra(FileDetailFragment.EXTRA_ACCOUNT, mAccount);
 253         startActivity(intent);
 254         */
 255         finish();
 256     }
 257
 258
 259     @Override
 260     protected Dialog onCreateDialog(int id) {
 261         Dialog dialog = null;
 262         switch (id) {
 263         case DIALOG_SHORT_WAIT: {
 264             ProgressDialog working_dialog = new ProgressDialog(this);
 265             working_dialog.setMessage(getResources().getString(
 266                     R.string.wait_a_moment));
 267             working_dialog.setIndeterminate(true);
 268             working_dialog.setCancelable(false);
 269             dialog = working_dialog;
 270             break;
 271         }
 272         default:
 273             dialog = null;
 274         }
 275         return dialog;
 276     }
 277
 278
 279     /**
 280      * {@inheritDoc}
 281      */
 282     @Override
 283     public void onFileStateChanged() {
 284         // nothing to do here!
 285     }
 286
 287
 288     /**
 289      * {@inheritDoc}
 290      */
 291     @Override
 292     public FileDownloaderBinder getFileDownloaderBinder() {
 293         return mDownloaderBinder;
 294     }
 295
 296
 297     @Override
 298     public FileUploaderBinder getFileUploaderBinder() {
 299         return mUploaderBinder;
 300     }
 301
 302
 303     @Override
 304     public void showFragmentWithDetails(OCFile file) {
 305         Intent showDetailsIntent = new Intent(this, FileDetailActivity.class);
 306         showDetailsIntent.putExtra(FileDetailFragment.EXTRA_FILE, file);
 307         showDetailsIntent.putExtra(FileDetailFragment.EXTRA_ACCOUNT, AccountUtils.getCurrentOwnCloudAccount(this));
 308         showDetailsIntent.putExtra(FileDetailActivity.EXTRA_MODE, FileDetailActivity.MODE_DETAILS);
 309         startActivity(showDetailsIntent);
 310     }
 311
 312
 313     private void requestForDownload(OCFile file) {
 314         Log.e(TAG, "REQUEST FOR DOWNLOAD : " + file.getFileName());
 315         if (mDownloaderBinder == null) {
 316             Log.e(TAG, "requestForDownload called without binder to download service");
 317
 318         } else if (!mDownloaderBinder.isDownloading(mAccount, file)) {
 319             Intent i = new Intent(this, FileDownloader.class);
 320             i.putExtra(FileDownloader.EXTRA_ACCOUNT, mAccount);
 321             i.putExtra(FileDownloader.EXTRA_FILE, file);
 322             startService(i);
 323         }
 324     }
 325
 326     @Override
 327     public void notifySuccessfulDownload(OCFile file, Intent intent, boolean success) {
 328         /*
 329         if (success) {
 330             if (mWaitingToPreview != null && mWaitingToPreview.equals(file)) {
 331                 mWaitingToPreview = null;
 332                 int position = mViewPager.getCurrentItem();
 333                 mPreviewImagePagerAdapter.updateFile(position, file);
 334                 Log.e(TAG, "BEFORE NOTIFY DATA SET CHANGED");
 335                 mPreviewImagePagerAdapter.notifyDataSetChanged();
 336                 Log.e(TAG, "AFTER NOTIFY DATA SET CHANGED");
 337             }
 338         }
 339         */
 340     }
 341
 342
 343     /**
 344      * This method will be invoked when a new page becomes selected. Animation is not necessarily complete.
 345      *
 346      *  @param  Position        Position index of the new selected page
 347      */
 348     @Override
 349     public void onPageSelected(int position) {
 350         Log.e(TAG, "onPageSelected " + position);
 351         if (mDownloaderBinder == null) {
 352             mRequestWaitingForBinder = true;
 353
 354         } else {
 355             OCFile currentFile = mPreviewImagePagerAdapter.getFileAt(position);
 356             getSupportActionBar().setTitle(currentFile.getFileName());
 357             if (!currentFile.isDown()) {
 358                 requestForDownload(currentFile);
 359                 //updateCurrentDownloadFragment(true);
 360             }
 361         }
 362     }
 363
 364     /**
 365      * Called when the scroll state changes. Useful for discovering when the user begins dragging,
 366      * when the pager is automatically settling to the current page, or when it is fully stopped/idle.
 367      *
 368      * @param   State       The new scroll state (SCROLL_STATE_IDLE, _DRAGGING, _SETTLING
 369      */
 370     @Override
 371     public void onPageScrollStateChanged(int state) {
 372     }
 373
 374     /**
 375      * This method will be invoked when the current page is scrolled, either as part of a programmatically
 376      * initiated smooth scroll or a user initiated touch scroll.
 377      *
 378      * @param   position                Position index of the first page currently being displayed.
 379      *                                  Page position+1 will be visible if positionOffset is nonzero.
 380      *
 381      * @param   positionOffset          Value from [0, 1) indicating the offset from the page at position.
 382      * @param   positionOffsetPixels    Value in pixels indicating the offset from position.
 383      */
 384     @Override
 385     public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
 386     }
 387
 388
 389     private void updateCurrentDownloadFragment(boolean transferring) {
 390         FileFragment fragment = mPreviewImagePagerAdapter.getFragmentAt(mViewPager.getCurrentItem());
 391         if (fragment instanceof FileDownloadFragment) {
 392             ((FileDownloadFragment) fragment).updateView(transferring);
 393             //mViewPager.invalidate();
 394         }
 395     }
 396
 397
 398     /**
 399      * Class waiting for broadcast events from the {@link FielDownloader} service.
 400      *
 401      * Updates the UI when a download is started or finished, provided that it is relevant for the
 402      * folder displayed in the gallery.
 403      */
 404     private class DownloadFinishReceiver extends BroadcastReceiver {
 405         @Override
 406         public void onReceive(Context context, Intent intent) {
 407             String accountName = intent.getStringExtra(FileDownloader.ACCOUNT_NAME);
 408             String downloadedRemotePath = intent.getStringExtra(FileDownloader.EXTRA_REMOTE_PATH);
 409             if (mAccount.name.equals(accountName) &&
 410                     downloadedRemotePath != null) {
 411
 412                 OCFile file = mStorageManager.getFileByPath(downloadedRemotePath);
 413                 int position = mPreviewImagePagerAdapter.getFilePosition(file);
 414                 boolean downloadWasFine = intent.getBooleanExtra(FileDownloader.EXTRA_DOWNLOAD_RESULT, false);
 415                 boolean isCurrent =  (mViewPager.getCurrentItem() == position);
 416
 417                 if (position >= 0) {
 418                     /// ITS MY BUSSINESS
 419                     Log.e(TAG, "downloaded file FOUND in adapter");
 420                     if (downloadWasFine) {
 421                         mPreviewImagePagerAdapter.updateFile(position, file);
 422                         //Log.e(TAG, "BEFORE NOTIFY DATA SET CHANGED");
 423                         mPreviewImagePagerAdapter.notifyDataSetChanged();
 424                         //Log.e(TAG, "AFTER NOTIFY DATA SET CHANGED");
 425
 426                     } else if (isCurrent) {
 427                         updateCurrentDownloadFragment(false);
 428                     }
 429
 430                 } else {
 431                     Log.e(TAG, "DOWNLOADED FILE NOT FOUND IN ADAPTER ");
 432                 }
 433
 434             }
 435             removeStickyBroadcast(intent);
 436         }
 437
 438     }
 439
 440
 441 }