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