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.R;
  45 import com.owncloud.android.authentication.AccountUtils;
  46 import com.owncloud.android.datamodel.FileDataStorageManager;
  47 import com.owncloud.android.datamodel.OCFile;
  48 import com.owncloud.android.files.services.FileDownloader;
  49 import com.owncloud.android.files.services.FileDownloader.FileDownloaderBinder;
  50 import com.owncloud.android.files.services.FileUploader;
  51 import com.owncloud.android.files.services.FileUploader.FileUploaderBinder;
  52 import com.owncloud.android.lib.common.operations.OnRemoteOperationListener;
  53 import com.owncloud.android.lib.common.operations.RemoteOperation;
  54 import com.owncloud.android.lib.common.operations.RemoteOperationResult;
  55 import com.owncloud.android.lib.common.operations.RemoteOperationResult.ResultCode;
  56 import com.owncloud.android.lib.common.utils.Log_OC;
  57 import com.owncloud.android.operations.CreateShareOperation;
  58 import com.owncloud.android.operations.RemoveFileOperation;
  59 import com.owncloud.android.operations.SynchronizeFileOperation;
  60 import com.owncloud.android.operations.UnshareLinkOperation;
  61 import com.owncloud.android.ui.activity.FileActivity;
  62 import com.owncloud.android.ui.activity.FileDisplayActivity;
  63 import com.owncloud.android.ui.fragment.FileFragment;
  64 import com.owncloud.android.utils.DisplayUtils;
  65
  66
  67 /**
  68  *  Holds a swiping galley where image files contained in an ownCloud directory are shown
  69  */
  70 public class PreviewImageActivity extends FileActivity implements
  71         FileFragment.ContainerActivity,
  72         ViewPager.OnPageChangeListener, OnRemoteOperationListener {
  73
  74     public static final int DIALOG_SHORT_WAIT = 0;
  75
  76     public static final String TAG = PreviewImageActivity.class.getSimpleName();
  77
  78     public static final String KEY_WAITING_TO_PREVIEW = "WAITING_TO_PREVIEW";
  79     private static final String KEY_WAITING_FOR_BINDER = "WAITING_FOR_BINDER";
  80
  81     private static final int INITIAL_HIDE_DELAY = 0; // immediate hide
  82
  83     private ExtendedViewPager mViewPager;
  84     private PreviewImagePagerAdapter mPreviewImagePagerAdapter;
  85     private int mSavedPosition = 0;
  86     private boolean mHasSavedPosition = false;
  87
  88     private boolean mRequestWaitingForBinder;
  89
  90     private DownloadFinishReceiver mDownloadFinishReceiver;
  91
  92     private View mFullScreenAnchorView;
  93
  94
  95     @Override
  96     protected void onCreate(Bundle savedInstanceState) {
  97         requestWindowFeature(Window.FEATURE_ACTION_BAR_OVERLAY);
  98
  99         super.onCreate(savedInstanceState);
 100
 101         setContentView(R.layout.preview_image_activity);
 102
 103         // Navigation Drawer
 104         initDrawer();
 105
 106         // ActionBar
 107         ActionBar actionBar = getSupportActionBar();
 108         updateActionBarTitleAndHomeButton(null);
 109         actionBar.hide();
 110
 111
 112         // Make sure we're running on Honeycomb or higher to use FullScreen and
 113         // Immersive Mode
 114         if (isHoneycombOrHigher()) {
 115
 116             mFullScreenAnchorView = getWindow().getDecorView();
 117             // to keep our UI controls visibility in line with system bars
 118             // visibility
 119             mFullScreenAnchorView.setOnSystemUiVisibilityChangeListener
 120                     (new View.OnSystemUiVisibilityChangeListener() {
 121                 @SuppressLint("InlinedApi")
 122                 @Override
 123                 public void onSystemUiVisibilityChange(int flags) {
 124                     boolean visible = (flags & View.SYSTEM_UI_FLAG_HIDE_NAVIGATION) == 0;
 125                     ActionBar actionBar = getSupportActionBar();
 126                     if (visible) {
 127                         actionBar.show();
 128                         mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED);
 129                     } else {
 130                         actionBar.hide();
 131                         mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
 132                     }
 133                 }
 134             });
 135         }
 136
 137         if (savedInstanceState != null) {
 138             mRequestWaitingForBinder = savedInstanceState.getBoolean(KEY_WAITING_FOR_BINDER);
 139         } else {
 140             mRequestWaitingForBinder = false;
 141         }
 142
 143     }
 144
 145     private void initViewPager() {
 146         // get parent from path
 147         String parentPath = getFile().getRemotePath().substring(0,
 148                 getFile().getRemotePath().lastIndexOf(getFile().getFileName()));
 149         OCFile parentFolder = getStorageManager().getFileByPath(parentPath);
 150         if (parentFolder == null) {
 151             // should not be necessary
 152             parentFolder = getStorageManager().getFileByPath(OCFile.ROOT_PATH);
 153         }
 154
 155         // TODO Enable when "On Device" is recovered ?
 156         mPreviewImagePagerAdapter = new PreviewImagePagerAdapter(getSupportFragmentManager(),
 157                 parentFolder, getAccount(), getStorageManager()/*, MainApp.getOnlyOnDevice()*/);
 158
 159         mViewPager = (ExtendedViewPager) findViewById(R.id.fragmentPager);
 160         int position = mHasSavedPosition ? mSavedPosition :
 161                 mPreviewImagePagerAdapter.getFilePosition(getFile());
 162         position = (position >= 0) ? position : 0;
 163         mViewPager.setAdapter(mPreviewImagePagerAdapter);
 164         mViewPager.setOnPageChangeListener(this);
 165         mViewPager.setCurrentItem(position);
 166         if (position == 0 && !getFile().isDown()) {
 167             // this is necessary because mViewPager.setCurrentItem(0) just after setting the
 168             // adapter does not result in a call to #onPageSelected(0)
 169             mRequestWaitingForBinder = true;
 170         }
 171     }
 172
 173
 174     protected void onPostCreate(Bundle savedInstanceState)  {
 175         super.onPostCreate(savedInstanceState);
 176
 177         // Trigger the initial hide() shortly after the activity has been
 178         // created, to briefly hint to the user that UI controls
 179         // are available
 180         delayedHide(INITIAL_HIDE_DELAY);
 181
 182     }
 183
 184     Handler mHideSystemUiHandler = new Handler() {
 185         @Override
 186         public void handleMessage(Message msg) {
 187             if (isHoneycombOrHigher()) {
 188                 hideSystemUI(mFullScreenAnchorView);
 189             }
 190             getSupportActionBar().hide();
 191         }
 192     };
 193
 194     private void delayedHide(int delayMillis)   {
 195         mHideSystemUiHandler.removeMessages(0);
 196         mHideSystemUiHandler.sendEmptyMessageDelayed(0, delayMillis);
 197     }
 198
 199
 200     /// handle Window Focus changes
 201     @Override
 202     public void onWindowFocusChanged(boolean hasFocus) {
 203         super.onWindowFocusChanged(hasFocus);
 204
 205         // When the window loses focus (e.g. the action overflow is shown),
 206         // cancel any pending hide action.
 207         if (!hasFocus) {
 208             mHideSystemUiHandler.removeMessages(0);
 209         }
 210     }
 211
 212
 213
 214     @Override
 215     public void onStart() {
 216         super.onStart();
 217     }
 218
 219     @Override
 220     protected void onSaveInstanceState(Bundle outState) {
 221         super.onSaveInstanceState(outState);
 222         outState.putBoolean(KEY_WAITING_FOR_BINDER, mRequestWaitingForBinder);
 223     }
 224
 225     @Override
 226     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 227         super.onRemoteOperationFinish(operation, result);
 228
 229         if (operation instanceof CreateShareOperation) {
 230             onCreateShareOperationFinish((CreateShareOperation) operation, result);
 231
 232         } else if (operation instanceof UnshareLinkOperation) {
 233             onUnshareLinkOperationFinish((UnshareLinkOperation) operation, result);
 234
 235         } else if (operation instanceof RemoveFileOperation) {
 236             finish();
 237         } else if (operation instanceof SynchronizeFileOperation) {
 238             onSynchronizeFileOperationFinish((SynchronizeFileOperation) operation, result);
 239
 240         }
 241     }
 242
 243
 244     private void onUnshareLinkOperationFinish(UnshareLinkOperation operation,
 245                                               RemoteOperationResult result) {
 246         if (result.isSuccess()) {
 247             OCFile file = getStorageManager().getFileByPath(getFile().getRemotePath());
 248             if (file != null) {
 249                 setFile(file);
 250             }
 251             invalidateOptionsMenu();
 252         } else if  (result.getCode() == ResultCode.SHARE_NOT_FOUND) {
 253             backToDisplayActivity();
 254         }
 255
 256     }
 257
 258     private void onCreateShareOperationFinish(CreateShareOperation operation,
 259                                               RemoteOperationResult result) {
 260         if (result.isSuccess()) {
 261             OCFile file = getStorageManager().getFileByPath(getFile().getRemotePath());
 262             if (file != null) {
 263                 setFile(file);
 264             }
 265             invalidateOptionsMenu();
 266         }
 267     }
 268
 269     private void onSynchronizeFileOperationFinish(SynchronizeFileOperation operation,
 270                                                   RemoteOperationResult result) {
 271         if (result.isSuccess()) {
 272             invalidateOptionsMenu();
 273         }
 274
 275     }
 276
 277     @Override
 278     protected ServiceConnection newTransferenceServiceConnection() {
 279         return new PreviewImageServiceConnection();
 280     }
 281
 282     /** Defines callbacks for service binding, passed to bindService() */
 283     private class PreviewImageServiceConnection implements ServiceConnection {
 284
 285         @Override
 286         public void onServiceConnected(ComponentName component, IBinder service) {
 287
 288             if (component.equals(new ComponentName(PreviewImageActivity.this,
 289                     FileDownloader.class))) {
 290                 mDownloaderBinder = (FileDownloaderBinder) service;
 291                 if (mRequestWaitingForBinder) {
 292                     mRequestWaitingForBinder = false;
 293                     Log_OC.d(TAG, "Simulating reselection of current page after connection " +
 294                             "of download binder");
 295                     onPageSelected(mViewPager.getCurrentItem());
 296                 }
 297
 298             } else if (component.equals(new ComponentName(PreviewImageActivity.this,
 299                     FileUploader.class))) {
 300                 Log_OC.d(TAG, "Upload service connected");
 301                 mUploaderBinder = (FileUploaderBinder) service;
 302             } else {
 303                 return;
 304             }
 305
 306         }
 307
 308         @Override
 309         public void onServiceDisconnected(ComponentName component) {
 310             if (component.equals(new ComponentName(PreviewImageActivity.this,
 311                     FileDownloader.class))) {
 312                 Log_OC.d(TAG, "Download service suddenly disconnected");
 313                 mDownloaderBinder = null;
 314             } else if (component.equals(new ComponentName(PreviewImageActivity.this,
 315                     FileUploader.class))) {
 316                 Log_OC.d(TAG, "Upload service suddenly disconnected");
 317                 mUploaderBinder = null;
 318             }
 319         }
 320     };
 321
 322
 323     @Override
 324     public void onStop() {
 325         super.onStop();
 326     }
 327
 328
 329     @Override
 330     public void onDestroy() {
 331         super.onDestroy();
 332     }
 333
 334     @Override
 335     public boolean onOptionsItemSelected(MenuItem item) {
 336         boolean returnValue = false;
 337
 338         switch(item.getItemId()){
 339         case android.R.id.home:
 340             if (mDrawerLayout.isDrawerOpen(GravityCompat.START)) {
 341                 mDrawerLayout.closeDrawer(GravityCompat.START);
 342             } else {
 343                 backToDisplayActivity();
 344             }
 345             returnValue = true;
 346             break;
 347         default:
 348                 returnValue = super.onOptionsItemSelected(item);
 349         }
 350
 351         return returnValue;
 352     }
 353
 354
 355     @Override
 356     protected void onResume() {
 357         super.onResume();
 358
 359         mDownloadFinishReceiver = new DownloadFinishReceiver();
 360
 361         IntentFilter filter = new IntentFilter(FileDownloader.getDownloadFinishMessage());
 362         filter.addAction(FileDownloader.getDownloadAddedMessage());
 363         registerReceiver(mDownloadFinishReceiver, filter);
 364     }
 365
 366     @Override
 367     protected void onPostResume() {
 368         super.onPostResume();
 369     }
 370
 371     @Override
 372     public void onPause() {
 373         if (mDownloadFinishReceiver != null){
 374             unregisterReceiver(mDownloadFinishReceiver);
 375             mDownloadFinishReceiver = null;
 376         }
 377
 378         super.onPause();
 379     }
 380
 381
 382     private void backToDisplayActivity() {
 383         finish();
 384     }
 385
 386     @Override
 387     public void showDetails(OCFile file) {
 388         Intent showDetailsIntent = new Intent(this, FileDisplayActivity.class);
 389         showDetailsIntent.setAction(FileDisplayActivity.ACTION_DETAILS);
 390         showDetailsIntent.putExtra(FileActivity.EXTRA_FILE, file);
 391         showDetailsIntent.putExtra(FileActivity.EXTRA_ACCOUNT,
 392                 AccountUtils.getCurrentOwnCloudAccount(this));
 393         startActivity(showDetailsIntent);
 394         int pos = mPreviewImagePagerAdapter.getFilePosition(file);
 395         file = mPreviewImagePagerAdapter.getFileAt(pos);
 396
 397     }
 398
 399
 400     private void requestForDownload(OCFile file) {
 401         if (mDownloaderBinder == null) {
 402             Log_OC.d(TAG, "requestForDownload called without binder to download service");
 403
 404         } else if (!mDownloaderBinder.isDownloading(getAccount(), file)) {
 405             Intent i = new Intent(this, FileDownloader.class);
 406             i.putExtra(FileDownloader.EXTRA_ACCOUNT, getAccount());
 407             i.putExtra(FileDownloader.EXTRA_FILE, file);
 408             startService(i);
 409         }
 410     }
 411
 412     /**
 413      * This method will be invoked when a new page becomes selected. Animation is not necessarily
 414      * complete.
 415      *
 416      *  @param  position        Position index of the new selected page
 417      */
 418     @Override
 419     public void onPageSelected(int position) {
 420         mSavedPosition = position;
 421         mHasSavedPosition = true;
 422         if (mDownloaderBinder == null) {
 423             mRequestWaitingForBinder = true;
 424
 425         } else {
 426             OCFile currentFile = mPreviewImagePagerAdapter.getFileAt(position);
 427             getSupportActionBar().setTitle(currentFile.getFileName());
 428             mDrawerToggle.setDrawerIndicatorEnabled(false);
 429             if (!currentFile.isDown()) {
 430                 if (!mPreviewImagePagerAdapter.pendingErrorAt(position)) {
 431                     requestForDownload(currentFile);
 432                 }
 433             }
 434
 435             // Call to reset image zoom to initial state
 436             ((PreviewImagePagerAdapter) mViewPager.getAdapter()).resetZoom();
 437         }
 438
 439     }
 440
 441     /**
 442      * Called when the scroll state changes. Useful for discovering when the user begins dragging,
 443      * when the pager is automatically settling to the current page. when it is fully stopped/idle.
 444      *
 445      * @param   state       The new scroll state (SCROLL_STATE_IDLE, _DRAGGING, _SETTLING
 446      */
 447     @Override
 448     public void onPageScrollStateChanged(int state) {
 449     }
 450
 451     /**
 452      * This method will be invoked when the current page is scrolled, either as part of a
 453      * programmatically initiated smooth scroll or a user initiated touch scroll.
 454      *
 455      * @param   position                Position index of the first page currently being displayed.
 456      *                                  Page position+1 will be visible if positionOffset is
 457      *                                  nonzero.
 458      *
 459      * @param   positionOffset          Value from [0, 1) indicating the offset from the page
 460      *                                  at position.
 461      * @param   positionOffsetPixels    Value in pixels indicating the offset from position.
 462      */
 463     @Override
 464     public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
 465     }
 466
 467
 468     /**
 469      * Class waiting for broadcast events from the {@link FileDownloader} service.
 470      *
 471      * Updates the UI when a download is started or finished, provided that it is relevant for the
 472      * folder displayed in the gallery.
 473      */
 474     private class DownloadFinishReceiver extends BroadcastReceiver {
 475         @Override
 476         public void onReceive(Context context, Intent intent) {
 477             String accountName = intent.getStringExtra(FileDownloader.ACCOUNT_NAME);
 478             String downloadedRemotePath = intent.getStringExtra(FileDownloader.EXTRA_REMOTE_PATH);
 479             if (getAccount().name.equals(accountName) &&
 480                     downloadedRemotePath != null) {
 481
 482                 OCFile file = getStorageManager().getFileByPath(downloadedRemotePath);
 483                 int position = mPreviewImagePagerAdapter.getFilePosition(file);
 484                 boolean downloadWasFine = intent.getBooleanExtra(
 485                         FileDownloader.EXTRA_DOWNLOAD_RESULT, false);
 486                 //boolean isOffscreen =  Math.abs((mViewPager.getCurrentItem() - position))
 487                 // <= mViewPager.getOffscreenPageLimit();
 488
 489                 if (position >= 0 &&
 490                         intent.getAction().equals(FileDownloader.getDownloadFinishMessage())) {
 491                     if (downloadWasFine) {
 492                         mPreviewImagePagerAdapter.updateFile(position, file);
 493
 494                     } else {
 495                         mPreviewImagePagerAdapter.updateWithDownloadError(position);
 496                     }
 497                     mPreviewImagePagerAdapter.notifyDataSetChanged();   // will trigger the creation
 498                                                                         // of new fragments
 499
 500                 } else {
 501                     Log_OC.d(TAG, "Download finished, but the fragment is offscreen");
 502                 }
 503
 504             }
 505             removeStickyBroadcast(intent);
 506         }
 507
 508     }
 509
 510     @SuppressLint("InlinedApi")
 511         public void toggleFullScreen() {
 512
 513         if (isHoneycombOrHigher()) {
 514
 515             boolean visible = (mFullScreenAnchorView.getSystemUiVisibility()
 516                     & View.SYSTEM_UI_FLAG_HIDE_NAVIGATION) == 0;
 517
 518             if (visible) {
 519                 hideSystemUI(mFullScreenAnchorView);
 520                 // actionBar.hide(); // propagated through
 521                 // OnSystemUiVisibilityChangeListener()
 522             } else {
 523                 showSystemUI(mFullScreenAnchorView);
 524                 // actionBar.show(); // propagated through
 525                 // OnSystemUiVisibilityChangeListener()
 526             }
 527
 528         } else {
 529
 530             ActionBar actionBar = getSupportActionBar();
 531             if (!actionBar.isShowing()) {
 532                 actionBar.show();
 533                 mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED);
 534
 535             } else {
 536                 actionBar.hide();
 537                 mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
 538
 539             }
 540
 541         }
 542     }
 543
 544     @Override
 545     protected void onAccountSet(boolean stateWasRecovered) {
 546         super.onAccountSet(stateWasRecovered);
 547         if (getAccount() != null) {
 548             OCFile file = getFile();
 549             /// Validate handled file  (first image to preview)
 550             if (file == null) {
 551                 throw new IllegalStateException("Instanced with a NULL OCFile");
 552             }
 553             if (!file.isImage()) {
 554                 throw new IllegalArgumentException("Non-image file passed as argument");
 555             }
 556
 557             // Update file according to DB file, if it is possible
 558             if (file.getFileId() > FileDataStorageManager.ROOT_PARENT_ID)
 559                 file = getStorageManager().getFileById(file.getFileId());
 560
 561             if (file != null) {
 562                 /// Refresh the activity according to the Account and OCFile set
 563                 setFile(file);  // reset after getting it fresh from storageManager
 564                 getSupportActionBar().setTitle(getFile().getFileName());
 565                 //if (!stateWasRecovered) {
 566                     initViewPager();
 567                 //}
 568
 569             } else {
 570                 // handled file not in the current Account
 571                 finish();
 572             }
 573         }
 574     }
 575
 576     @Override
 577     public void onBrowsedDownTo(OCFile folder) {
 578         // TODO Auto-generated method stub
 579
 580     }
 581
 582     @Override
 583     public void onTransferStateChanged(OCFile file, boolean downloading, boolean uploading) {
 584         // TODO Auto-generated method stub
 585
 586     }
 587
 588
 589     @SuppressLint("InlinedApi")
 590         private void hideSystemUI(View anchorView) {
 591         anchorView.setSystemUiVisibility(
 592                 View.SYSTEM_UI_FLAG_HIDE_NAVIGATION         // hides NAVIGATION BAR; Android >= 4.0
 593             |   View.SYSTEM_UI_FLAG_FULLSCREEN              // hides STATUS BAR;     Android >= 4.1
 594             |   View.SYSTEM_UI_FLAG_IMMERSIVE               // stays interactive;    Android >= 4.4
 595             |   View.SYSTEM_UI_FLAG_LAYOUT_STABLE           // draw full window;     Android >= 4.1
 596             |   View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN       // draw full window;     Android >= 4.1
 597             |   View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION  // draw full window;     Android >= 4.1
 598         );
 599     }
 600
 601     @SuppressLint("InlinedApi")
 602     private void showSystemUI(View anchorView) {
 603         anchorView.setSystemUiVisibility(
 604                 View.SYSTEM_UI_FLAG_LAYOUT_STABLE           // draw full window;     Android >= 4.1
 605             |   View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN       // draw full window;     Android >= 4.1
 606             |   View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION  // draw full window;     Android >= 4.1
 607         );
 608     }
 609
 610     /**
 611      * Checks if OS version is Honeycomb one or higher
 612      *
 613      * @return boolean
 614      */
 615     private boolean isHoneycombOrHigher() {
 616         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
 617             return true;
 618         }
 619         return false;
 620     }
 621
 622     @Override
 623     public void allFilesOption(){
 624         backToDisplayActivity();
 625         super.allFilesOption();
 626     }
 627 }