src/com/owncloud/android/ui/preview/PreviewImageActivity.java

   1 /**
   2  *   ownCloud Android client application
   3  *
   4  *   @author David A. Velasco
   5  *   Copyright (C) 2015  ownCloud Inc.
   6  *
   7  *   This program is free software: you can redistribute it and/or modify
   8  *   it under the terms of the GNU General Public License version 2,
   9  *   as published by the Free Software Foundation.
  10  *
  11  *   This program is distributed in the hd that it will be useful,
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *   GNU General Public License for more details.
  15  *
  16  *   You should have received a copy of the GNU General Public License
  17  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  *
  19  */
  20 package com.owncloud.android.ui.preview;
  21
  22 import android.annotation.SuppressLint;
  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.graphics.drawable.ColorDrawable;
  30 import android.os.Build;
  31 import android.os.Bundle;
  32 import android.os.Handler;
  33 import android.os.IBinder;
  34 import android.os.Message;
  35 import android.support.v4.view.GravityCompat;
  36 import android.support.v4.view.ViewPager;
  37 import android.support.v4.widget.DrawerLayout;
  38 import android.support.v7.app.ActionBar;
  39 import android.view.MenuItem;
  40 import android.view.View;
  41 import android.view.Window;
  42
  43 import com.ortiz.touch.ExtendedViewPager;
  44 import com.owncloud.android.MainApp;
  45 import com.owncloud.android.R;
  46 import com.owncloud.android.authentication.AccountUtils;
  47 import com.owncloud.android.datamodel.FileDataStorageManager;
  48 import com.owncloud.android.datamodel.OCFile;
  49 import com.owncloud.android.files.services.FileDownloader;
  50 import com.owncloud.android.files.services.FileDownloader.FileDownloaderBinder;
  51 import com.owncloud.android.files.services.FileUploader;
  52 import com.owncloud.android.files.services.FileUploader.FileUploaderBinder;
  53 import com.owncloud.android.lib.common.operations.OnRemoteOperationListener;
  54 import com.owncloud.android.lib.common.operations.RemoteOperation;
  55 import com.owncloud.android.lib.common.operations.RemoteOperationResult;
  56 import com.owncloud.android.lib.common.operations.RemoteOperationResult.ResultCode;
  57 import com.owncloud.android.lib.common.utils.Log_OC;
  58 import com.owncloud.android.operations.CreateShareOperation;
  59 import com.owncloud.android.operations.RemoveFileOperation;
  60 import com.owncloud.android.operations.SynchronizeFileOperation;
  61 import com.owncloud.android.operations.UnshareLinkOperation;
  62 import com.owncloud.android.ui.activity.FileActivity;
  63 import com.owncloud.android.ui.activity.FileDisplayActivity;
  64 import com.owncloud.android.ui.fragment.FileFragment;
  65 import com.owncloud.android.utils.DisplayUtils;
  66
  67
  68 /**
  69  *  Holds a swiping galley where image files contained in an ownCloud directory are shown
  70  */
  71 public class PreviewImageActivity extends FileActivity implements
  72         FileFragment.ContainerActivity,
  73         ViewPager.OnPageChangeListener, OnRemoteOperationListener {
  74
  75     public static final int DIALOG_SHORT_WAIT = 0;
  76
  77     public static final String TAG = PreviewImageActivity.class.getSimpleName();
  78
  79     public static final String KEY_WAITING_TO_PREVIEW = "WAITING_TO_PREVIEW";
  80     private static final String KEY_WAITING_FOR_BINDER = "WAITING_FOR_BINDER";
  81
  82     private static final int INITIAL_HIDE_DELAY = 0; // immediate hide
  83
  84     private ExtendedViewPager mViewPager;
  85     private PreviewImagePagerAdapter mPreviewImagePagerAdapter;
  86     private int mSavedPosition = 0;
  87     private boolean mHasSavedPosition = false;
  88
  89     private boolean mRequestWaitingForBinder;
  90
  91     private DownloadFinishReceiver mDownloadFinishReceiver;
  92
  93     private View mFullScreenAnchorView;
  94
  95
  96     @Override
  97     protected void onCreate(Bundle savedInstanceState) {
  98         requestWindowFeature(Window.FEATURE_ACTION_BAR_OVERLAY);
  99
 100         super.onCreate(savedInstanceState);
 101
 102         setContentView(R.layout.preview_image_activity);
 103
 104         // Navigation Drawer
 105         initDrawer();
 106
 107         // ActionBar
 108         ActionBar actionBar = getSupportActionBar();
 109         updateActionBarTitleAndHomeButton(null);
 110         actionBar.hide();
 111
 112
 113         // Make sure we're running on Honeycomb or higher to use FullScreen and
 114         // Immersive Mode
 115         if (isHoneycombOrHigher()) {
 116
 117             mFullScreenAnchorView = getWindow().getDecorView();
 118             // to keep our UI controls visibility in line with system bars
 119             // visibility
 120             mFullScreenAnchorView.setOnSystemUiVisibilityChangeListener
 121                     (new View.OnSystemUiVisibilityChangeListener() {
 122                 @SuppressLint("InlinedApi")
 123                 @Override
 124                 public void onSystemUiVisibilityChange(int flags) {
 125                     boolean visible = (flags & View.SYSTEM_UI_FLAG_HIDE_NAVIGATION) == 0;
 126                     ActionBar actionBar = getSupportActionBar();
 127                     if (visible) {
 128                         actionBar.show();
 129                         mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED);
 130                     } else {
 131                         actionBar.hide();
 132                         mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
 133                     }
 134                 }
 135             });
 136
 137             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
 138                 getWindow().setStatusBarColor(getResources().getColor(R.color.owncloud_blue_dark_transparent));
 139             }
 140         }
 141
 142         if (savedInstanceState != null) {
 143             mRequestWaitingForBinder = savedInstanceState.getBoolean(KEY_WAITING_FOR_BINDER);
 144         } else {
 145             mRequestWaitingForBinder = false;
 146         }
 147
 148     }
 149
 150     private void initViewPager() {
 151         // get parent from path
 152         String parentPath = getFile().getRemotePath().substring(0,
 153                 getFile().getRemotePath().lastIndexOf(getFile().getFileName()));
 154         OCFile parentFolder = getStorageManager().getFileByPath(parentPath);
 155         if (parentFolder == null) {
 156             // should not be necessary
 157             parentFolder = getStorageManager().getFileByPath(OCFile.ROOT_PATH);
 158         }
 159
 160         mPreviewImagePagerAdapter = new PreviewImagePagerAdapter(getSupportFragmentManager(),
 161                 parentFolder, getAccount(), getStorageManager(), MainApp.getOnlyOnDevice());
 162
 163         mViewPager = (ExtendedViewPager) findViewById(R.id.fragmentPager);
 164         int position = mHasSavedPosition ? mSavedPosition :
 165                 mPreviewImagePagerAdapter.getFilePosition(getFile());
 166         position = (position >= 0) ? position : 0;
 167         mViewPager.setAdapter(mPreviewImagePagerAdapter);
 168         mViewPager.setOnPageChangeListener(this);
 169         mViewPager.setCurrentItem(position);
 170         if (position == 0 && !getFile().isDown()) {
 171             // this is necessary because mViewPager.setCurrentItem(0) just after setting the
 172             // adapter does not result in a call to #onPageSelected(0)
 173             mRequestWaitingForBinder = true;
 174         }
 175     }
 176
 177
 178     protected void onPostCreate(Bundle savedInstanceState)  {
 179         super.onPostCreate(savedInstanceState);
 180
 181         // Trigger the initial hide() shortly after the activity has been
 182         // created, to briefly hint to the user that UI controls
 183         // are available
 184         delayedHide(INITIAL_HIDE_DELAY);
 185
 186     }
 187
 188     Handler mHideSystemUiHandler = new Handler() {
 189         @Override
 190         public void handleMessage(Message msg) {
 191             if (isHoneycombOrHigher()) {
 192                 hideSystemUI(mFullScreenAnchorView);
 193             }
 194             getSupportActionBar().hide();
 195         }
 196     };
 197
 198     private void delayedHide(int delayMillis)   {
 199         mHideSystemUiHandler.removeMessages(0);
 200         mHideSystemUiHandler.sendEmptyMessageDelayed(0, delayMillis);
 201     }
 202
 203
 204     /// handle Window Focus changes
 205     @Override
 206     public void onWindowFocusChanged(boolean hasFocus) {
 207         super.onWindowFocusChanged(hasFocus);
 208
 209         // When the window loses focus (e.g. the action overflow is shown),
 210         // cancel any pending hide action.
 211         if (!hasFocus) {
 212             mHideSystemUiHandler.removeMessages(0);
 213         }
 214     }
 215
 216
 217
 218     @Override
 219     public void onStart() {
 220         super.onStart();
 221     }
 222
 223     @Override
 224     protected void onSaveInstanceState(Bundle outState) {
 225         super.onSaveInstanceState(outState);
 226         outState.putBoolean(KEY_WAITING_FOR_BINDER, mRequestWaitingForBinder);
 227     }
 228
 229     @Override
 230     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 231         super.onRemoteOperationFinish(operation, result);
 232
 233         if (operation instanceof CreateShareOperation) {
 234             onCreateShareOperationFinish((CreateShareOperation) operation, result);
 235
 236         } else if (operation instanceof UnshareLinkOperation) {
 237             onUnshareLinkOperationFinish((UnshareLinkOperation) operation, result);
 238
 239         } else if (operation instanceof RemoveFileOperation) {
 240             finish();
 241         } else if (operation instanceof SynchronizeFileOperation) {
 242             onSynchronizeFileOperationFinish((SynchronizeFileOperation) operation, result);
 243
 244         }
 245     }
 246
 247
 248     private void onUnshareLinkOperationFinish(UnshareLinkOperation operation,
 249                                               RemoteOperationResult result) {
 250         if (result.isSuccess()) {
 251             OCFile file = getStorageManager().getFileByPath(getFile().getRemotePath());
 252             if (file != null) {
 253                 setFile(file);
 254             }
 255             invalidateOptionsMenu();
 256         } else if  (result.getCode() == ResultCode.SHARE_NOT_FOUND) {
 257             backToDisplayActivity();
 258         }
 259
 260     }
 261
 262     private void onCreateShareOperationFinish(CreateShareOperation operation,
 263                                               RemoteOperationResult result) {
 264         if (result.isSuccess()) {
 265             OCFile file = getStorageManager().getFileByPath(getFile().getRemotePath());
 266             if (file != null) {
 267                 setFile(file);
 268             }
 269             invalidateOptionsMenu();
 270         }
 271     }
 272
 273     private void onSynchronizeFileOperationFinish(SynchronizeFileOperation operation,
 274                                                   RemoteOperationResult result) {
 275         if (result.isSuccess()) {
 276             invalidateOptionsMenu();
 277         }
 278
 279     }
 280
 281     @Override
 282     protected ServiceConnection newTransferenceServiceConnection() {
 283         return new PreviewImageServiceConnection();
 284     }
 285
 286     /** Defines callbacks for service binding, passed to bindService() */
 287     private class PreviewImageServiceConnection implements ServiceConnection {
 288
 289         @Override
 290         public void onServiceConnected(ComponentName component, IBinder service) {
 291
 292             if (component.equals(new ComponentName(PreviewImageActivity.this,
 293                     FileDownloader.class))) {
 294                 mDownloaderBinder = (FileDownloaderBinder) service;
 295                 if (mRequestWaitingForBinder) {
 296                     mRequestWaitingForBinder = false;
 297                     Log_OC.d(TAG, "Simulating reselection of current page after connection " +
 298                             "of download binder");
 299                     onPageSelected(mViewPager.getCurrentItem());
 300                 }
 301
 302             } else if (component.equals(new ComponentName(PreviewImageActivity.this,
 303                     FileUploader.class))) {
 304                 Log_OC.d(TAG, "Upload service connected");
 305                 mUploaderBinder = (FileUploaderBinder) service;
 306             } else {
 307                 return;
 308             }
 309
 310         }
 311
 312         @Override
 313         public void onServiceDisconnected(ComponentName component) {
 314             if (component.equals(new ComponentName(PreviewImageActivity.this,
 315                     FileDownloader.class))) {
 316                 Log_OC.d(TAG, "Download service suddenly disconnected");
 317                 mDownloaderBinder = null;
 318             } else if (component.equals(new ComponentName(PreviewImageActivity.this,
 319                     FileUploader.class))) {
 320                 Log_OC.d(TAG, "Upload service suddenly disconnected");
 321                 mUploaderBinder = null;
 322             }
 323         }
 324     };
 325
 326
 327     @Override
 328     public void onStop() {
 329         super.onStop();
 330     }
 331
 332
 333     @Override
 334     public void onDestroy() {
 335         super.onDestroy();
 336     }
 337
 338     @Override
 339     public boolean onOptionsItemSelected(MenuItem item) {
 340         boolean returnValue = false;
 341
 342         switch(item.getItemId()){
 343         case android.R.id.home:
 344             if (mDrawerLayout.isDrawerOpen(GravityCompat.START)) {
 345                 mDrawerLayout.closeDrawer(GravityCompat.START);
 346             } else {
 347                 backToDisplayActivity();
 348             }
 349             returnValue = true;
 350             break;
 351         default:
 352                 returnValue = super.onOptionsItemSelected(item);
 353         }
 354
 355         return returnValue;
 356     }
 357
 358
 359     @Override
 360     protected void onResume() {
 361         super.onResume();
 362
 363         mDownloadFinishReceiver = new DownloadFinishReceiver();
 364
 365         IntentFilter filter = new IntentFilter(FileDownloader.getDownloadFinishMessage());
 366         filter.addAction(FileDownloader.getDownloadAddedMessage());
 367         registerReceiver(mDownloadFinishReceiver, filter);
 368     }
 369
 370     @Override
 371     protected void onPostResume() {
 372         super.onPostResume();
 373     }
 374
 375     @Override
 376     public void onPause() {
 377         if (mDownloadFinishReceiver != null){
 378             unregisterReceiver(mDownloadFinishReceiver);
 379             mDownloadFinishReceiver = null;
 380         }
 381
 382         super.onPause();
 383     }
 384
 385
 386     private void backToDisplayActivity() {
 387         finish();
 388     }
 389
 390     @Override
 391     public void showDetails(OCFile file) {
 392         Intent showDetailsIntent = new Intent(this, FileDisplayActivity.class);
 393         showDetailsIntent.setAction(FileDisplayActivity.ACTION_DETAILS);
 394         showDetailsIntent.putExtra(FileActivity.EXTRA_FILE, file);
 395         showDetailsIntent.putExtra(FileActivity.EXTRA_ACCOUNT,
 396                 AccountUtils.getCurrentOwnCloudAccount(this));
 397         startActivity(showDetailsIntent);
 398         int pos = mPreviewImagePagerAdapter.getFilePosition(file);
 399         file = mPreviewImagePagerAdapter.getFileAt(pos);
 400
 401     }
 402
 403
 404     private void requestForDownload(OCFile file) {
 405         if (mDownloaderBinder == null) {
 406             Log_OC.d(TAG, "requestForDownload called without binder to download service");
 407
 408         } else if (!mDownloaderBinder.isDownloading(getAccount(), file)) {
 409             Intent i = new Intent(this, FileDownloader.class);
 410             i.putExtra(FileDownloader.EXTRA_ACCOUNT, getAccount());
 411             i.putExtra(FileDownloader.EXTRA_FILE, file);
 412             startService(i);
 413         }
 414     }
 415
 416     /**
 417      * This method will be invoked when a new page becomes selected. Animation is not necessarily
 418      * complete.
 419      *
 420      *  @param  position        Position index of the new selected page
 421      */
 422     @Override
 423     public void onPageSelected(int position) {
 424         mSavedPosition = position;
 425         mHasSavedPosition = true;
 426         if (mDownloaderBinder == null) {
 427             mRequestWaitingForBinder = true;
 428
 429         } else {
 430             OCFile currentFile = mPreviewImagePagerAdapter.getFileAt(position);
 431             getSupportActionBar().setTitle(currentFile.getFileName());
 432             mDrawerToggle.setDrawerIndicatorEnabled(false);
 433
 434             // Call to reset image zoom to initial state
 435             ((PreviewImagePagerAdapter) mViewPager.getAdapter()).resetZoom();
 436         }
 437
 438     }
 439
 440     /**
 441      * Called when the scroll state changes. Useful for discovering when the user begins dragging,
 442      * when the pager is automatically settling to the current page. when it is fully stopped/idle.
 443      *
 444      * @param   state       The new scroll state (SCROLL_STATE_IDLE, _DRAGGING, _SETTLING
 445      */
 446     @Override
 447     public void onPageScrollStateChanged(int state) {
 448     }
 449
 450     /**
 451      * This method will be invoked when the current page is scrolled, either as part of a
 452      * programmatically initiated smooth scroll or a user initiated touch scroll.
 453      *
 454      * @param   position                Position index of the first page currently being displayed.
 455      *                                  Page position+1 will be visible if positionOffset is
 456      *                                  nonzero.
 457      *
 458      * @param   positionOffset          Value from [0, 1) indicating the offset from the page
 459      *                                  at position.
 460      * @param   positionOffsetPixels    Value in pixels indicating the offset from position.
 461      */
 462     @Override
 463     public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
 464     }
 465
 466
 467     /**
 468      * Class waiting for broadcast events from the {@link FileDownloader} service.
 469      *
 470      * Updates the UI when a download is started or finished, provided that it is relevant for the
 471      * folder displayed in the gallery.
 472      */
 473     private class DownloadFinishReceiver extends BroadcastReceiver {
 474         @Override
 475         public void onReceive(Context context, Intent intent) {
 476             String accountName = intent.getStringExtra(FileDownloader.ACCOUNT_NAME);
 477             String downloadedRemotePath = intent.getStringExtra(FileDownloader.EXTRA_REMOTE_PATH);
 478             if (getAccount().name.equals(accountName) &&
 479                     downloadedRemotePath != null) {
 480
 481                 OCFile file = getStorageManager().getFileByPath(downloadedRemotePath);
 482                 int position = mPreviewImagePagerAdapter.getFilePosition(file);
 483                 boolean downloadWasFine = intent.getBooleanExtra(
 484                         FileDownloader.EXTRA_DOWNLOAD_RESULT, false);
 485                 //boolean isOffscreen =  Math.abs((mViewPager.getCurrentItem() - position))
 486                 // <= mViewPager.getOffscreenPageLimit();
 487
 488                 if (position >= 0 &&
 489                         intent.getAction().equals(FileDownloader.getDownloadFinishMessage())) {
 490                     if (downloadWasFine) {
 491                         mPreviewImagePagerAdapter.updateFile(position, file);
 492
 493                     } else {
 494                         mPreviewImagePagerAdapter.updateWithDownloadError(position);
 495                     }
 496                     mPreviewImagePagerAdapter.notifyDataSetChanged();   // will trigger the creation
 497                                                                         // of new fragments
 498
 499                 } else {
 500                     Log_OC.d(TAG, "Download finished, but the fragment is offscreen");
 501                 }
 502
 503             }
 504             removeStickyBroadcast(intent);
 505         }
 506
 507     }
 508
 509     @SuppressLint("InlinedApi")
 510         public void toggleFullScreen() {
 511
 512         if (isHoneycombOrHigher()) {
 513
 514             boolean visible = (mFullScreenAnchorView.getSystemUiVisibility()
 515                     & View.SYSTEM_UI_FLAG_HIDE_NAVIGATION) == 0;
 516
 517             if (visible) {
 518                 hideSystemUI(mFullScreenAnchorView);
 519                 // actionBar.hide(); // propagated through
 520                 // OnSystemUiVisibilityChangeListener()
 521             } else {
 522                 showSystemUI(mFullScreenAnchorView);
 523                 // actionBar.show(); // propagated through
 524                 // OnSystemUiVisibilityChangeListener()
 525             }
 526
 527         } else {
 528
 529             ActionBar actionBar = getSupportActionBar();
 530             if (!actionBar.isShowing()) {
 531                 actionBar.show();
 532                 mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED);
 533
 534             } else {
 535                 actionBar.hide();
 536                 mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
 537
 538             }
 539
 540         }
 541     }
 542
 543     @Override
 544     protected void onAccountSet(boolean stateWasRecovered) {
 545         super.onAccountSet(stateWasRecovered);
 546         if (getAccount() != null) {
 547             OCFile file = getFile();
 548             /// Validate handled file  (first image to preview)
 549             if (file == null) {
 550                 throw new IllegalStateException("Instanced with a NULL OCFile");
 551             }
 552             if (!file.isImage()) {
 553                 throw new IllegalArgumentException("Non-image file passed as argument");
 554             }
 555
 556             // Update file according to DB file, if it is possible
 557             if (file.getFileId() > FileDataStorageManager.ROOT_PARENT_ID)
 558                 file = getStorageManager().getFileById(file.getFileId());
 559
 560             if (file != null) {
 561                 /// Refresh the activity according to the Account and OCFile set
 562                 setFile(file);  // reset after getting it fresh from storageManager
 563                 getSupportActionBar().setTitle(getFile().getFileName());
 564                 //if (!stateWasRecovered) {
 565                     initViewPager();
 566                 //}
 567
 568             } else {
 569                 // handled file not in the current Account
 570                 finish();
 571             }
 572         }
 573     }
 574
 575     @Override
 576     public void onBrowsedDownTo(OCFile folder) {
 577         // TODO Auto-generated method stub
 578
 579     }
 580
 581     @Override
 582     public void onTransferStateChanged(OCFile file, boolean downloading, boolean uploading) {
 583         // TODO Auto-generated method stub
 584
 585     }
 586
 587
 588     @SuppressLint("InlinedApi")
 589         private void hideSystemUI(View anchorView) {
 590         anchorView.setSystemUiVisibility(
 591                 View.SYSTEM_UI_FLAG_HIDE_NAVIGATION         // hides NAVIGATION BAR; Android >= 4.0
 592             |   View.SYSTEM_UI_FLAG_FULLSCREEN              // hides STATUS BAR;     Android >= 4.1
 593             |   View.SYSTEM_UI_FLAG_IMMERSIVE               // stays interactive;    Android >= 4.4
 594             |   View.SYSTEM_UI_FLAG_LAYOUT_STABLE           // draw full window;     Android >= 4.1
 595             |   View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN       // draw full window;     Android >= 4.1
 596             |   View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION  // draw full window;     Android >= 4.1
 597         );
 598     }
 599
 600     @SuppressLint("InlinedApi")
 601     private void showSystemUI(View anchorView) {
 602         anchorView.setSystemUiVisibility(
 603                 View.SYSTEM_UI_FLAG_LAYOUT_STABLE           // draw full window;     Android >= 4.1
 604             |   View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN       // draw full window;     Android >= 4.1
 605             |   View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION  // draw full window;     Android >= 4.1
 606         );
 607     }
 608
 609     /**
 610      * Checks if OS version is Honeycomb one or higher
 611      *
 612      * @return boolean
 613      */
 614     private boolean isHoneycombOrHigher() {
 615         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
 616             return true;
 617         }
 618         return false;
 619     }
 620
 621     @Override
 622     public void allFilesOption(){
 623         backToDisplayActivity();
 624         super.allFilesOption();
 625     }
 626 }