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 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 package com.owncloud.android.ui.preview;
  18
  19 import android.content.BroadcastReceiver;
  20 import android.content.ComponentName;
  21 import android.content.Context;
  22 import android.content.Intent;
  23 import android.content.IntentFilter;
  24 import android.content.ServiceConnection;
  25 import android.content.SharedPreferences;
  26 import android.os.Bundle;
  27 import android.os.IBinder;
  28 import android.preference.PreferenceManager;
  29 import android.support.v4.view.ViewPager;
  30
  31 import com.actionbarsherlock.app.ActionBar;
  32 import com.actionbarsherlock.view.MenuItem;
  33 import com.actionbarsherlock.view.Window;
  34 import com.ortiz.touch.ExtendedViewPager;
  35 import com.owncloud.android.R;
  36 import com.owncloud.android.authentication.AccountUtils;
  37 import com.owncloud.android.datamodel.FileDataStorageManager;
  38 import com.owncloud.android.datamodel.OCFile;
  39 import com.owncloud.android.files.services.FileDownloader;
  40 import com.owncloud.android.files.services.FileDownloader.FileDownloaderBinder;
  41 import com.owncloud.android.files.services.FileUploader;
  42 import com.owncloud.android.files.services.FileUploader.FileUploaderBinder;
  43 import com.owncloud.android.lib.common.operations.OnRemoteOperationListener;
  44 import com.owncloud.android.lib.common.operations.RemoteOperation;
  45 import com.owncloud.android.lib.common.operations.RemoteOperationResult;
  46 import com.owncloud.android.lib.common.operations.RemoteOperationResult.ResultCode;
  47 import com.owncloud.android.operations.CreateShareOperation;
  48 import com.owncloud.android.operations.RemoveFileOperation;
  49 import com.owncloud.android.operations.UnshareLinkOperation;
  50 import com.owncloud.android.ui.activity.FileActivity;
  51 import com.owncloud.android.ui.activity.FileDisplayActivity;
  52 import com.owncloud.android.ui.activity.PinCodeActivity;
  53 import com.owncloud.android.ui.fragment.FileFragment;
  54 import com.owncloud.android.utils.DisplayUtils;
  55 import com.owncloud.android.utils.Log_OC;
  56
  57
  58 /**
  59  *  Holds a swiping galley where image files contained in an ownCloud directory are shown
  60  *
  61  *  @author David A. Velasco
  62  */
  63 public class PreviewImageActivity extends FileActivity implements
  64  FileFragment.ContainerActivity,
  65 ViewPager.OnPageChangeListener, OnRemoteOperationListener {
  66
  67     public static final int DIALOG_SHORT_WAIT = 0;
  68
  69     public static final String TAG = PreviewImageActivity.class.getSimpleName();
  70
  71     public static final String KEY_WAITING_TO_PREVIEW = "WAITING_TO_PREVIEW";
  72     private static final String KEY_WAITING_FOR_BINDER = "WAITING_FOR_BINDER";
  73
  74     private ExtendedViewPager mViewPager;
  75     private PreviewImagePagerAdapter mPreviewImagePagerAdapter;
  76
  77     private boolean mRequestWaitingForBinder;
  78
  79     private DownloadFinishReceiver mDownloadFinishReceiver;
  80
  81     private boolean mFullScreen;
  82
  83
  84     @Override
  85     protected void onCreate(Bundle savedInstanceState) {
  86         super.onCreate(savedInstanceState);
  87
  88         requestWindowFeature(Window.FEATURE_ACTION_BAR_OVERLAY);
  89         setContentView(R.layout.preview_image_activity);
  90
  91         ActionBar actionBar = getSupportActionBar();
  92         actionBar.setIcon(DisplayUtils.getSeasonalIconId());
  93         actionBar.setDisplayHomeAsUpEnabled(true);
  94         actionBar.hide();
  95
  96         // PIN CODE request
  97         if (getIntent().getExtras() != null && savedInstanceState == null && fromNotification()) {
  98             requestPinCode();
  99         }
 100
 101         mFullScreen = true;
 102         if (savedInstanceState != null) {
 103             mRequestWaitingForBinder = savedInstanceState.getBoolean(KEY_WAITING_FOR_BINDER);
 104         } else {
 105             mRequestWaitingForBinder = false;
 106         }
 107
 108     }
 109
 110     private void initViewPager() {
 111         // get parent from path
 112         String parentPath = getFile().getRemotePath().substring(0, getFile().getRemotePath().lastIndexOf(getFile().getFileName()));
 113         OCFile parentFolder = getStorageManager().getFileByPath(parentPath);
 114         if (parentFolder == null) {
 115             // should not be necessary
 116             parentFolder = getStorageManager().getFileByPath(OCFile.ROOT_PATH);
 117         }
 118         mPreviewImagePagerAdapter = new PreviewImagePagerAdapter(getSupportFragmentManager(), parentFolder, getAccount(), getStorageManager());
 119         mViewPager = (ExtendedViewPager) findViewById(R.id.fragmentPager);
 120         int position = mPreviewImagePagerAdapter.getFilePosition(getFile());
 121         position = (position >= 0) ? position : 0;
 122         mViewPager.setAdapter(mPreviewImagePagerAdapter);
 123         mViewPager.setOnPageChangeListener(this);
 124         mViewPager.setCurrentItem(position);
 125         if (position == 0 && !getFile().isDown()) {
 126             // this is necessary because mViewPager.setCurrentItem(0) just after setting the adapter does not result in a call to #onPageSelected(0)
 127             mRequestWaitingForBinder = true;
 128         }
 129     }
 130
 131
 132     @Override
 133     public void onStart() {
 134         super.onStart();
 135     }
 136
 137     @Override
 138     protected void onSaveInstanceState(Bundle outState) {
 139         super.onSaveInstanceState(outState);
 140         outState.putBoolean(KEY_WAITING_FOR_BINDER, mRequestWaitingForBinder);
 141     }
 142
 143     @Override
 144     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 145         super.onRemoteOperationFinish(operation, result);
 146
 147         if (operation instanceof CreateShareOperation) {
 148             onCreateShareOperationFinish((CreateShareOperation) operation, result);
 149
 150         } else if (operation instanceof UnshareLinkOperation) {
 151             onUnshareLinkOperationFinish((UnshareLinkOperation) operation, result);
 152
 153         } else if (operation instanceof RemoveFileOperation) {
 154             finish();
 155         }
 156     }
 157
 158
 159     private void onUnshareLinkOperationFinish(UnshareLinkOperation operation, RemoteOperationResult result) {
 160         if (result.isSuccess()) {
 161             OCFile file = getStorageManager().getFileByPath(getFile().getRemotePath());
 162             if (file != null) {
 163                 setFile(file);
 164             }
 165             invalidateOptionsMenu();
 166         } else if  (result.getCode() == ResultCode.SHARE_NOT_FOUND) {
 167             backToDisplayActivity();
 168         }
 169
 170     }
 171
 172     private void onCreateShareOperationFinish(CreateShareOperation operation, RemoteOperationResult result) {
 173         if (result.isSuccess()) {
 174             OCFile file = getStorageManager().getFileByPath(getFile().getRemotePath());
 175             if (file != null) {
 176                 setFile(file);
 177             }
 178             invalidateOptionsMenu();
 179         }
 180     }
 181
 182     @Override
 183     protected ServiceConnection newTransferenceServiceConnection() {
 184         return new PreviewImageServiceConnection();
 185     }
 186
 187     /** Defines callbacks for service binding, passed to bindService() */
 188     private class PreviewImageServiceConnection implements ServiceConnection {
 189
 190         @Override
 191         public void onServiceConnected(ComponentName component, IBinder service) {
 192
 193             if (component.equals(new ComponentName(PreviewImageActivity.this, FileDownloader.class))) {
 194                 mDownloaderBinder = (FileDownloaderBinder) service;
 195                 if (mRequestWaitingForBinder) {
 196                     mRequestWaitingForBinder = false;
 197                     Log_OC.d(TAG, "Simulating reselection of current page after connection of download binder");
 198                     onPageSelected(mViewPager.getCurrentItem());
 199                 }
 200
 201             } else if (component.equals(new ComponentName(PreviewImageActivity.this, FileUploader.class))) {
 202                 Log_OC.d(TAG, "Upload service connected");
 203                 mUploaderBinder = (FileUploaderBinder) service;
 204             } else {
 205                 return;
 206             }
 207
 208         }
 209
 210         @Override
 211         public void onServiceDisconnected(ComponentName component) {
 212             if (component.equals(new ComponentName(PreviewImageActivity.this, FileDownloader.class))) {
 213                 Log_OC.d(TAG, "Download service suddenly disconnected");
 214                 mDownloaderBinder = null;
 215             } else if (component.equals(new ComponentName(PreviewImageActivity.this, FileUploader.class))) {
 216                 Log_OC.d(TAG, "Upload service suddenly disconnected");
 217                 mUploaderBinder = null;
 218             }
 219         }
 220     };
 221
 222
 223     @Override
 224     public void onStop() {
 225         super.onStop();
 226     }
 227
 228
 229     @Override
 230     public void onDestroy() {
 231         super.onDestroy();
 232     }
 233
 234     @Override
 235     public boolean onOptionsItemSelected(MenuItem item) {
 236         boolean returnValue = false;
 237
 238         switch(item.getItemId()){
 239         case android.R.id.home:
 240             backToDisplayActivity();
 241             returnValue = true;
 242             break;
 243         default:
 244                 returnValue = super.onOptionsItemSelected(item);
 245         }
 246
 247         return returnValue;
 248     }
 249
 250
 251     @Override
 252     protected void onResume() {
 253         super.onResume();
 254         //Log.e(TAG, "ACTIVITY, ONRESUME");
 255         mDownloadFinishReceiver = new DownloadFinishReceiver();
 256
 257         IntentFilter filter = new IntentFilter(FileDownloader.getDownloadFinishMessage());
 258         filter.addAction(FileDownloader.getDownloadAddedMessage());
 259         registerReceiver(mDownloadFinishReceiver, filter);
 260     }
 261
 262     @Override
 263     protected void onPostResume() {
 264         //Log.e(TAG, "ACTIVITY, ONPOSTRESUME");
 265         super.onPostResume();
 266     }
 267
 268     @Override
 269     public void onPause() {
 270         unregisterReceiver(mDownloadFinishReceiver);
 271         mDownloadFinishReceiver = null;
 272         super.onPause();
 273     }
 274
 275
 276     private void backToDisplayActivity() {
 277         finish();
 278     }
 279
 280     @Override
 281     public void showDetails(OCFile file) {
 282         Intent showDetailsIntent = new Intent(this, FileDisplayActivity.class);
 283         showDetailsIntent.setAction(FileDisplayActivity.ACTION_DETAILS);
 284         showDetailsIntent.putExtra(FileActivity.EXTRA_FILE, file);
 285         showDetailsIntent.putExtra(FileActivity.EXTRA_ACCOUNT, AccountUtils.getCurrentOwnCloudAccount(this));
 286         startActivity(showDetailsIntent);
 287         int pos = mPreviewImagePagerAdapter.getFilePosition(file);
 288         file = mPreviewImagePagerAdapter.getFileAt(pos);
 289
 290     }
 291
 292
 293     private void requestForDownload(OCFile file) {
 294         if (mDownloaderBinder == null) {
 295             Log_OC.d(TAG, "requestForDownload called without binder to download service");
 296
 297         } else if (!mDownloaderBinder.isDownloading(getAccount(), file)) {
 298             Intent i = new Intent(this, FileDownloader.class);
 299             i.putExtra(FileDownloader.EXTRA_ACCOUNT, getAccount());
 300             i.putExtra(FileDownloader.EXTRA_FILE, file);
 301             startService(i);
 302         }
 303     }
 304
 305     /**
 306      * This method will be invoked when a new page becomes selected. Animation is not necessarily complete.
 307      *
 308      *  @param  Position        Position index of the new selected page
 309      */
 310     @Override
 311     public void onPageSelected(int position) {
 312         if (mDownloaderBinder == null) {
 313             mRequestWaitingForBinder = true;
 314
 315         } else {
 316             OCFile currentFile = mPreviewImagePagerAdapter.getFileAt(position);
 317             getSupportActionBar().setTitle(currentFile.getFileName());
 318             if (!currentFile.isDown()) {
 319                 if (!mPreviewImagePagerAdapter.pendingErrorAt(position)) {
 320                     requestForDownload(currentFile);
 321                 }
 322             }
 323
 324             // Call to reset image zoom to initial state
 325             ((PreviewImagePagerAdapter) mViewPager.getAdapter()).resetZoom();
 326         }
 327
 328     }
 329
 330     /**
 331      * Called when the scroll state changes. Useful for discovering when the user begins dragging,
 332      * when the pager is automatically settling to the current page. when it is fully stopped/idle.
 333      *
 334      * @param   State       The new scroll state (SCROLL_STATE_IDLE, _DRAGGING, _SETTLING
 335      */
 336     @Override
 337     public void onPageScrollStateChanged(int state) {
 338     }
 339
 340     /**
 341      * This method will be invoked when the current page is scrolled, either as part of a programmatically
 342      * initiated smooth scroll or a user initiated touch scroll.
 343      *
 344      * @param   position                Position index of the first page currently being displayed.
 345      *                                  Page position+1 will be visible if positionOffset is nonzero.
 346      *
 347      * @param   positionOffset          Value from [0, 1) indicating the offset from the page at position.
 348      * @param   positionOffsetPixels    Value in pixels indicating the offset from position.
 349      */
 350     @Override
 351     public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
 352     }
 353
 354
 355     /**
 356      * Class waiting for broadcast events from the {@link FielDownloader} service.
 357      *
 358      * Updates the UI when a download is started or finished, provided that it is relevant for the
 359      * folder displayed in the gallery.
 360      */
 361     private class DownloadFinishReceiver extends BroadcastReceiver {
 362         @Override
 363         public void onReceive(Context context, Intent intent) {
 364             String accountName = intent.getStringExtra(FileDownloader.ACCOUNT_NAME);
 365             String downloadedRemotePath = intent.getStringExtra(FileDownloader.EXTRA_REMOTE_PATH);
 366             if (getAccount().name.equals(accountName) &&
 367                     downloadedRemotePath != null) {
 368
 369                 OCFile file = getStorageManager().getFileByPath(downloadedRemotePath);
 370                 int position = mPreviewImagePagerAdapter.getFilePosition(file);
 371                 boolean downloadWasFine = intent.getBooleanExtra(FileDownloader.EXTRA_DOWNLOAD_RESULT, false);
 372                 //boolean isOffscreen =  Math.abs((mViewPager.getCurrentItem() - position)) <= mViewPager.getOffscreenPageLimit();
 373
 374                 if (position >= 0 && intent.getAction().equals(FileDownloader.getDownloadFinishMessage())) {
 375                     if (downloadWasFine) {
 376                         mPreviewImagePagerAdapter.updateFile(position, file);
 377
 378                     } else {
 379                         mPreviewImagePagerAdapter.updateWithDownloadError(position);
 380                     }
 381                     mPreviewImagePagerAdapter.notifyDataSetChanged();   // will trigger the creation of new fragments
 382
 383                 } else {
 384                     Log_OC.d(TAG, "Download finished, but the fragment is offscreen");
 385                 }
 386
 387             }
 388             removeStickyBroadcast(intent);
 389         }
 390
 391     }
 392
 393     public void toggleFullScreen() {
 394         ActionBar actionBar = getSupportActionBar();
 395         if (mFullScreen) {
 396             actionBar.show();
 397
 398         } else {
 399             actionBar.hide();
 400
 401         }
 402         mFullScreen = !mFullScreen;
 403     }
 404
 405     @Override
 406     protected void onAccountSet(boolean stateWasRecovered) {
 407         super.onAccountSet(stateWasRecovered);
 408         if (getAccount() != null) {
 409             OCFile file = getFile();
 410             /// Validate handled file  (first image to preview)
 411             if (file == null) {
 412                 throw new IllegalStateException("Instanced with a NULL OCFile");
 413             }
 414             if (!file.isImage()) {
 415                 throw new IllegalArgumentException("Non-image file passed as argument");
 416             }
 417
 418             // Update file according to DB file, if it is possible
 419             if (file.getFileId() > FileDataStorageManager.ROOT_PARENT_ID)
 420                 file = getStorageManager().getFileById(file.getFileId());
 421
 422             if (file != null) {
 423                 /// Refresh the activity according to the Account and OCFile set
 424                 setFile(file);  // reset after getting it fresh from storageManager
 425                 getSupportActionBar().setTitle(getFile().getFileName());
 426                 //if (!stateWasRecovered) {
 427                     initViewPager();
 428                 //}
 429
 430             } else {
 431                 // handled file not in the current Account
 432                 finish();
 433             }
 434         }
 435     }
 436
 437
 438     /**
 439      * Launch an intent to request the PIN code to the user before letting him use the app
 440      */
 441     private void requestPinCode() {
 442         boolean pinStart = false;
 443         SharedPreferences appPrefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
 444         pinStart = appPrefs.getBoolean("set_pincode", false);
 445         if (pinStart) {
 446             Intent i = new Intent(getApplicationContext(), PinCodeActivity.class);
 447             i.putExtra(PinCodeActivity.EXTRA_ACTIVITY, "PreviewImageActivity");
 448             startActivity(i);
 449         }
 450     }
 451
 452     @Override
 453     public void onBrowsedDownTo(OCFile folder) {
 454         // TODO Auto-generated method stub
 455
 456     }
 457
 458     @Override
 459     public void onTransferStateChanged(OCFile file, boolean downloading, boolean uploading) {
 460         // TODO Auto-generated method stub
 461
 462     }
 463
 464 }