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 import android.view.MotionEvent;
  31 import android.view.View;
  32 import android.view.View.OnTouchListener;
  33
  34 import com.actionbarsherlock.app.ActionBar;
  35 import com.actionbarsherlock.view.MenuItem;
  36 import com.actionbarsherlock.view.Window;
  37 import com.ortiz.touch.ExtendedViewPager;
  38 import com.owncloud.android.R;
  39 import com.owncloud.android.authentication.AccountUtils;
  40 import com.owncloud.android.datamodel.FileDataStorageManager;
  41 import com.owncloud.android.datamodel.OCFile;
  42 import com.owncloud.android.files.services.FileDownloader;
  43 import com.owncloud.android.files.services.FileDownloader.FileDownloaderBinder;
  44 import com.owncloud.android.files.services.FileUploader;
  45 import com.owncloud.android.files.services.FileUploader.FileUploaderBinder;
  46 import com.owncloud.android.lib.common.operations.OnRemoteOperationListener;
  47 import com.owncloud.android.lib.common.operations.RemoteOperation;
  48 import com.owncloud.android.lib.common.operations.RemoteOperationResult;
  49 import com.owncloud.android.lib.common.operations.RemoteOperationResult.ResultCode;
  50 import com.owncloud.android.operations.CreateShareOperation;
  51 import com.owncloud.android.operations.RemoveFileOperation;
  52 import com.owncloud.android.operations.UnshareLinkOperation;
  53 import com.owncloud.android.ui.activity.FileActivity;
  54 import com.owncloud.android.ui.activity.FileDisplayActivity;
  55 import com.owncloud.android.ui.activity.PinCodeActivity;
  56 import com.owncloud.android.ui.fragment.FileFragment;
  57 import com.owncloud.android.utils.DisplayUtils;
  58 import com.owncloud.android.utils.Log_OC;
  59
  60
  61 /**
  62  *  Holds a swiping galley where image files contained in an ownCloud directory are shown
  63  *
  64  *  @author David A. Velasco
  65  */
  66 public class PreviewImageActivity extends FileActivity implements
  67 FileFragment.ContainerActivity, OnTouchListener,
  68 ViewPager.OnPageChangeListener, OnRemoteOperationListener {
  69
  70     public static final int DIALOG_SHORT_WAIT = 0;
  71
  72     public static final String TAG = PreviewImageActivity.class.getSimpleName();
  73
  74     public static final String KEY_WAITING_TO_PREVIEW = "WAITING_TO_PREVIEW";
  75     private static final String KEY_WAITING_FOR_BINDER = "WAITING_FOR_BINDER";
  76
  77     private ExtendedViewPager mViewPager;
  78     private PreviewImagePagerAdapter mPreviewImagePagerAdapter;
  79
  80     private boolean mRequestWaitingForBinder;
  81
  82     private DownloadFinishReceiver mDownloadFinishReceiver;
  83
  84     private boolean mFullScreen;
  85
  86
  87     @Override
  88     protected void onCreate(Bundle savedInstanceState) {
  89         super.onCreate(savedInstanceState);
  90
  91         requestWindowFeature(Window.FEATURE_ACTION_BAR_OVERLAY);
  92         setContentView(R.layout.preview_image_activity);
  93
  94         ActionBar actionBar = getSupportActionBar();
  95         actionBar.setIcon(DisplayUtils.getSeasonalIconId());
  96         actionBar.setDisplayHomeAsUpEnabled(true);
  97         actionBar.hide();
  98
  99         // PIN CODE request
 100         if (getIntent().getExtras() != null && savedInstanceState == null && fromNotification()) {
 101             requestPinCode();
 102         }
 103
 104         mFullScreen = true;
 105         if (savedInstanceState != null) {
 106             mRequestWaitingForBinder = savedInstanceState.getBoolean(KEY_WAITING_FOR_BINDER);
 107         } else {
 108             mRequestWaitingForBinder = false;
 109         }
 110
 111     }
 112
 113     private void initViewPager() {
 114         // get parent from path
 115         String parentPath = getFile().getRemotePath().substring(0, getFile().getRemotePath().lastIndexOf(getFile().getFileName()));
 116         OCFile parentFolder = getStorageManager().getFileByPath(parentPath);
 117         if (parentFolder == null) {
 118             // should not be necessary
 119             parentFolder = getStorageManager().getFileByPath(OCFile.ROOT_PATH);
 120         }
 121         mPreviewImagePagerAdapter = new PreviewImagePagerAdapter(getSupportFragmentManager(), parentFolder, getAccount(), getStorageManager());
 122         mViewPager = (ExtendedViewPager) findViewById(R.id.fragmentPager);
 123         int position = mPreviewImagePagerAdapter.getFilePosition(getFile());
 124         position = (position >= 0) ? position : 0;
 125         mViewPager.setAdapter(mPreviewImagePagerAdapter);
 126         mViewPager.setOnPageChangeListener(this);
 127         mViewPager.setCurrentItem(position);
 128         if (position == 0 && !getFile().isDown()) {
 129             // this is necessary because mViewPager.setCurrentItem(0) just after setting the adapter does not result in a call to #onPageSelected(0)
 130             mRequestWaitingForBinder = true;
 131         }
 132     }
 133
 134
 135     @Override
 136     public void onStart() {
 137         super.onStart();
 138     }
 139
 140     @Override
 141     protected void onSaveInstanceState(Bundle outState) {
 142         super.onSaveInstanceState(outState);
 143         outState.putBoolean(KEY_WAITING_FOR_BINDER, mRequestWaitingForBinder);
 144     }
 145
 146     @Override
 147     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 148         super.onRemoteOperationFinish(operation, result);
 149
 150         if (operation instanceof CreateShareOperation) {
 151             onCreateShareOperationFinish((CreateShareOperation) operation, result);
 152
 153         } else if (operation instanceof UnshareLinkOperation) {
 154             onUnshareLinkOperationFinish((UnshareLinkOperation) operation, result);
 155
 156         } else if (operation instanceof RemoveFileOperation) {
 157             finish();
 158         }
 159     }
 160
 161
 162     private void onUnshareLinkOperationFinish(UnshareLinkOperation operation, RemoteOperationResult result) {
 163         if (result.isSuccess()) {
 164             OCFile file = getStorageManager().getFileByPath(getFile().getRemotePath());
 165             if (file != null) {
 166                 setFile(file);
 167             }
 168             invalidateOptionsMenu();
 169         } else if  (result.getCode() == ResultCode.SHARE_NOT_FOUND) {
 170             backToDisplayActivity();
 171         }
 172
 173     }
 174
 175     private void onCreateShareOperationFinish(CreateShareOperation operation, RemoteOperationResult result) {
 176         if (result.isSuccess()) {
 177             OCFile file = getStorageManager().getFileByPath(getFile().getRemotePath());
 178             if (file != null) {
 179                 setFile(file);
 180             }
 181             invalidateOptionsMenu();
 182         }
 183     }
 184
 185     @Override
 186     protected ServiceConnection newTransferenceServiceConnection() {
 187         return new PreviewImageServiceConnection();
 188     }
 189
 190     /** Defines callbacks for service binding, passed to bindService() */
 191     private class PreviewImageServiceConnection implements ServiceConnection {
 192
 193         @Override
 194         public void onServiceConnected(ComponentName component, IBinder service) {
 195
 196             if (component.equals(new ComponentName(PreviewImageActivity.this, FileDownloader.class))) {
 197                 mDownloaderBinder = (FileDownloaderBinder) service;
 198                 if (mRequestWaitingForBinder) {
 199                     mRequestWaitingForBinder = false;
 200                     Log_OC.d(TAG, "Simulating reselection of current page after connection of download binder");
 201                     onPageSelected(mViewPager.getCurrentItem());
 202                 }
 203
 204             } else if (component.equals(new ComponentName(PreviewImageActivity.this, FileUploader.class))) {
 205                 Log_OC.d(TAG, "Upload service connected");
 206                 mUploaderBinder = (FileUploaderBinder) service;
 207             } else {
 208                 return;
 209             }
 210
 211         }
 212
 213         @Override
 214         public void onServiceDisconnected(ComponentName component) {
 215             if (component.equals(new ComponentName(PreviewImageActivity.this, FileDownloader.class))) {
 216                 Log_OC.d(TAG, "Download service suddenly disconnected");
 217                 mDownloaderBinder = null;
 218             } else if (component.equals(new ComponentName(PreviewImageActivity.this, FileUploader.class))) {
 219                 Log_OC.d(TAG, "Upload service suddenly disconnected");
 220                 mUploaderBinder = null;
 221             }
 222         }
 223     };
 224
 225
 226     @Override
 227     public void onStop() {
 228         super.onStop();
 229     }
 230
 231
 232     @Override
 233     public void onDestroy() {
 234         super.onDestroy();
 235     }
 236
 237     @Override
 238     public boolean onOptionsItemSelected(MenuItem item) {
 239         boolean returnValue = false;
 240
 241         switch(item.getItemId()){
 242         case android.R.id.home:
 243             backToDisplayActivity();
 244             returnValue = true;
 245             break;
 246         default:
 247                 returnValue = super.onOptionsItemSelected(item);
 248         }
 249
 250         return returnValue;
 251     }
 252
 253
 254     @Override
 255     protected void onResume() {
 256         super.onResume();
 257         //Log.e(TAG, "ACTIVITY, ONRESUME");
 258         mDownloadFinishReceiver = new DownloadFinishReceiver();
 259
 260         IntentFilter filter = new IntentFilter(FileDownloader.getDownloadFinishMessage());
 261         filter.addAction(FileDownloader.getDownloadAddedMessage());
 262         registerReceiver(mDownloadFinishReceiver, filter);
 263     }
 264
 265     @Override
 266     protected void onPostResume() {
 267         //Log.e(TAG, "ACTIVITY, ONPOSTRESUME");
 268         super.onPostResume();
 269     }
 270
 271     @Override
 272     public void onPause() {
 273         unregisterReceiver(mDownloadFinishReceiver);
 274         mDownloadFinishReceiver = null;
 275         super.onPause();
 276     }
 277
 278
 279     private void backToDisplayActivity() {
 280         finish();
 281     }
 282
 283     @Override
 284     public void showDetails(OCFile file) {
 285         Intent showDetailsIntent = new Intent(this, FileDisplayActivity.class);
 286         showDetailsIntent.setAction(FileDisplayActivity.ACTION_DETAILS);
 287         showDetailsIntent.putExtra(FileActivity.EXTRA_FILE, file);
 288         showDetailsIntent.putExtra(FileActivity.EXTRA_ACCOUNT, AccountUtils.getCurrentOwnCloudAccount(this));
 289         startActivity(showDetailsIntent);
 290         int pos = mPreviewImagePagerAdapter.getFilePosition(file);
 291         file = mPreviewImagePagerAdapter.getFileAt(pos);
 292
 293     }
 294
 295
 296     private void requestForDownload(OCFile file) {
 297         if (mDownloaderBinder == null) {
 298             Log_OC.d(TAG, "requestForDownload called without binder to download service");
 299
 300         } else if (!mDownloaderBinder.isDownloading(getAccount(), file)) {
 301             Intent i = new Intent(this, FileDownloader.class);
 302             i.putExtra(FileDownloader.EXTRA_ACCOUNT, getAccount());
 303             i.putExtra(FileDownloader.EXTRA_FILE, file);
 304             startService(i);
 305         }
 306     }
 307
 308     /**
 309      * This method will be invoked when a new page becomes selected. Animation is not necessarily complete.
 310      *
 311      *  @param  Position        Position index of the new selected page
 312      */
 313     @Override
 314     public void onPageSelected(int position) {
 315         if (mDownloaderBinder == null) {
 316             mRequestWaitingForBinder = true;
 317
 318         } else {
 319             OCFile currentFile = mPreviewImagePagerAdapter.getFileAt(position);
 320             getSupportActionBar().setTitle(currentFile.getFileName());
 321             if (!currentFile.isDown()) {
 322                 if (!mPreviewImagePagerAdapter.pendingErrorAt(position)) {
 323                     requestForDownload(currentFile);
 324                 }
 325             }
 326         }
 327     }
 328
 329     /**
 330      * Called when the scroll state changes. Useful for discovering when the user begins dragging,
 331      * when the pager is automatically settling to the current page. when it is fully stopped/idle.
 332      *
 333      * @param   State       The new scroll state (SCROLL_STATE_IDLE, _DRAGGING, _SETTLING
 334      */
 335     @Override
 336     public void onPageScrollStateChanged(int state) {
 337     }
 338
 339     /**
 340      * This method will be invoked when the current page is scrolled, either as part of a programmatically
 341      * initiated smooth scroll or a user initiated touch scroll.
 342      *
 343      * @param   position                Position index of the first page currently being displayed.
 344      *                                  Page position+1 will be visible if positionOffset is nonzero.
 345      *
 346      * @param   positionOffset          Value from [0, 1) indicating the offset from the page at position.
 347      * @param   positionOffsetPixels    Value in pixels indicating the offset from position.
 348      */
 349     @Override
 350     public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
 351     }
 352
 353
 354     /**
 355      * Class waiting for broadcast events from the {@link FielDownloader} service.
 356      *
 357      * Updates the UI when a download is started or finished, provided that it is relevant for the
 358      * folder displayed in the gallery.
 359      */
 360     private class DownloadFinishReceiver extends BroadcastReceiver {
 361         @Override
 362         public void onReceive(Context context, Intent intent) {
 363             String accountName = intent.getStringExtra(FileDownloader.ACCOUNT_NAME);
 364             String downloadedRemotePath = intent.getStringExtra(FileDownloader.EXTRA_REMOTE_PATH);
 365             if (getAccount().name.equals(accountName) &&
 366                     downloadedRemotePath != null) {
 367
 368                 OCFile file = getStorageManager().getFileByPath(downloadedRemotePath);
 369                 int position = mPreviewImagePagerAdapter.getFilePosition(file);
 370                 boolean downloadWasFine = intent.getBooleanExtra(FileDownloader.EXTRA_DOWNLOAD_RESULT, false);
 371                 //boolean isOffscreen =  Math.abs((mViewPager.getCurrentItem() - position)) <= mViewPager.getOffscreenPageLimit();
 372
 373                 if (position >= 0 && intent.getAction().equals(FileDownloader.getDownloadFinishMessage())) {
 374                     if (downloadWasFine) {
 375                         mPreviewImagePagerAdapter.updateFile(position, file);
 376
 377                     } else {
 378                         mPreviewImagePagerAdapter.updateWithDownloadError(position);
 379                     }
 380                     mPreviewImagePagerAdapter.notifyDataSetChanged();   // will trigger the creation of new fragments
 381
 382                 } else {
 383                     Log_OC.d(TAG, "Download finished, but the fragment is offscreen");
 384                 }
 385
 386             }
 387             removeStickyBroadcast(intent);
 388         }
 389
 390     }
 391
 392
 393     @Override
 394     public boolean onTouch(View v, MotionEvent event) {
 395         if (event.getAction() == MotionEvent.ACTION_UP) {
 396            toggleFullScreen();
 397         }
 398         return true;
 399     }
 400
 401
 402     private void toggleFullScreen() {
 403         ActionBar actionBar = getSupportActionBar();
 404         if (mFullScreen) {
 405             actionBar.show();
 406
 407         } else {
 408             actionBar.hide();
 409
 410         }
 411         mFullScreen = !mFullScreen;
 412     }
 413
 414     @Override
 415     protected void onAccountSet(boolean stateWasRecovered) {
 416         super.onAccountSet(stateWasRecovered);
 417         if (getAccount() != null) {
 418             OCFile file = getFile();
 419             /// Validate handled file  (first image to preview)
 420             if (file == null) {
 421                 throw new IllegalStateException("Instanced with a NULL OCFile");
 422             }
 423             if (!file.isImage()) {
 424                 throw new IllegalArgumentException("Non-image file passed as argument");
 425             }
 426
 427             // Update file according to DB file, if it is possible
 428             if (file.getFileId() > FileDataStorageManager.ROOT_PARENT_ID)
 429                 file = getStorageManager().getFileById(file.getFileId());
 430
 431             if (file != null) {
 432                 /// Refresh the activity according to the Account and OCFile set
 433                 setFile(file);  // reset after getting it fresh from storageManager
 434                 getSupportActionBar().setTitle(getFile().getFileName());
 435                 //if (!stateWasRecovered) {
 436                     initViewPager();
 437                 //}
 438
 439             } else {
 440                 // handled file not in the current Account
 441                 finish();
 442             }
 443         }
 444     }
 445
 446
 447     /**
 448      * Launch an intent to request the PIN code to the user before letting him use the app
 449      */
 450     private void requestPinCode() {
 451         boolean pinStart = false;
 452         SharedPreferences appPrefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
 453         pinStart = appPrefs.getBoolean("set_pincode", false);
 454         if (pinStart) {
 455             Intent i = new Intent(getApplicationContext(), PinCodeActivity.class);
 456             i.putExtra(PinCodeActivity.EXTRA_ACTIVITY, "PreviewImageActivity");
 457             startActivity(i);
 458         }
 459     }
 460
 461     @Override
 462     public void onBrowsedDownTo(OCFile folder) {
 463         // TODO Auto-generated method stub
 464
 465     }
 466
 467     @Override
 468     public void onTransferStateChanged(OCFile file, boolean downloading, boolean uploading) {
 469         // TODO Auto-generated method stub
 470
 471     }
 472
 473 }