com.cerema.cloud2.ui.activity.FileDisplayActivity.java Source code

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Here is the source code for com.cerema.cloud2.ui.activity.FileDisplayActivity.java

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/**
 *   ownCloud Android client application
 *
 *   @author Bartek Przybylski
 *   @author David A. Velasco
 *   Copyright (C) 2011  Bartek Przybylski
 *   Copyright (C) 2015 ownCloud Inc.
 *
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License version 2,
 *   as published by the Free Software Foundation.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

package com.cerema.cloud2.ui.activity;

import android.Manifest;
import android.accounts.Account;
import android.accounts.AuthenticatorException;
import android.annotation.TargetApi;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.ServiceConnection;
import android.content.SharedPreferences;
import android.content.SyncRequest;
import android.content.pm.PackageManager;
import android.content.res.Resources.NotFoundException;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.IBinder;
import android.preference.PreferenceManager;
import android.provider.OpenableColumns;
import android.support.design.widget.Snackbar;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.content.ContextCompat;
import android.support.v4.view.GravityCompat;
import android.support.v7.app.AlertDialog;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.RelativeLayout;
import android.widget.Toast;

import com.cerema.cloud2.MainApp;
import com.cerema.cloud2.R;
import com.cerema.cloud2.datamodel.FileDataStorageManager;
import com.cerema.cloud2.datamodel.OCFile;
import com.cerema.cloud2.files.services.FileDownloader;
import com.cerema.cloud2.files.services.FileDownloader.FileDownloaderBinder;
import com.cerema.cloud2.files.services.FileUploader;
import com.cerema.cloud2.files.services.FileUploader.FileUploaderBinder;
import com.cerema.cloud2.lib.common.network.CertificateCombinedException;
import com.cerema.cloud2.lib.common.operations.RemoteOperation;
import com.cerema.cloud2.lib.common.operations.RemoteOperationResult;
import com.cerema.cloud2.lib.common.operations.RemoteOperationResult.ResultCode;
import com.cerema.cloud2.lib.common.utils.Log_OC;
import com.cerema.cloud2.operations.CopyFileOperation;
import com.cerema.cloud2.operations.CreateFolderOperation;
import com.cerema.cloud2.operations.MoveFileOperation;
import com.cerema.cloud2.operations.RefreshFolderOperation;
import com.cerema.cloud2.operations.RemoveFileOperation;
import com.cerema.cloud2.operations.RenameFileOperation;
import com.cerema.cloud2.operations.SynchronizeFileOperation;
import com.cerema.cloud2.services.observer.FileObserverService;
import com.cerema.cloud2.syncadapter.FileSyncAdapter;
import com.cerema.cloud2.ui.dialog.ConfirmationDialogFragment;
import com.cerema.cloud2.ui.dialog.CreateFolderDialogFragment;
import com.cerema.cloud2.ui.dialog.SslUntrustedCertDialog;
import com.cerema.cloud2.ui.dialog.SslUntrustedCertDialog.OnSslUntrustedCertListener;
import com.cerema.cloud2.ui.fragment.FileDetailFragment;
import com.cerema.cloud2.ui.fragment.FileFragment;
import com.cerema.cloud2.ui.fragment.OCFileListFragment;
import com.cerema.cloud2.ui.preview.PreviewImageActivity;
import com.cerema.cloud2.ui.preview.PreviewImageFragment;
import com.cerema.cloud2.ui.preview.PreviewMediaFragment;
import com.cerema.cloud2.ui.preview.PreviewTextFragment;
import com.cerema.cloud2.ui.preview.PreviewVideoActivity;
import com.cerema.cloud2.utils.DisplayUtils;
import com.cerema.cloud2.utils.ErrorMessageAdapter;
import com.cerema.cloud2.utils.FileStorageUtils;
import com.cerema.cloud2.utils.PermissionUtil;
import com.cerema.cloud2.utils.UriUtils;

import java.io.File;

/**
 * Displays, what files the user has available in his ownCloud.
 */

public class FileDisplayActivity extends HookActivity
        implements FileFragment.ContainerActivity, OnSslUntrustedCertListener, OnEnforceableRefreshListener {

    private SyncBroadcastReceiver mSyncBroadcastReceiver;
    private UploadFinishReceiver mUploadFinishReceiver;
    private DownloadFinishReceiver mDownloadFinishReceiver;
    private RemoteOperationResult mLastSslUntrustedServerResult = null;

    private boolean mDualPane;
    private View mLeftFragmentContainer;
    private View mRightFragmentContainer;
    private ProgressBar mProgressBar;

    private static final String KEY_WAITING_TO_PREVIEW = "WAITING_TO_PREVIEW";
    private static final String KEY_SYNC_IN_PROGRESS = "SYNC_IN_PROGRESS";
    private static final String KEY_WAITING_TO_SEND = "WAITING_TO_SEND";

    public static final String ACTION_DETAILS = "com.cerema.cloud2.ui.activity.action.DETAILS";

    public static final int ACTION_SELECT_CONTENT_FROM_APPS = 1;
    public static final int ACTION_SELECT_MULTIPLE_FILES = 2;
    public static final int ACTION_MOVE_FILES = 3;
    public static final int ACTION_COPY_FILES = 4;

    private static final String TAG = FileDisplayActivity.class.getSimpleName();

    private static final String TAG_LIST_OF_FILES = "LIST_OF_FILES";
    private static final String TAG_SECOND_FRAGMENT = "SECOND_FRAGMENT";

    private OCFile mWaitingToPreview;

    private boolean mSyncInProgress = false;

    private static String DIALOG_UNTRUSTED_CERT = "DIALOG_UNTRUSTED_CERT";
    private static String DIALOG_UPLOAD_SOURCE = "DIALOG_UPLOAD_SOURCE";
    private static String DIALOG_CERT_NOT_SAVED = "DIALOG_CERT_NOT_SAVED";

    private OCFile mWaitingToSend;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        Log_OC.v(TAG, "onCreate() start");

        super.onCreate(savedInstanceState); // this calls onAccountChanged() when ownCloud Account
                                            // is valid

        /// grant that FileObserverService is watching favorite files
        if (savedInstanceState == null) {
            Intent initObserversIntent = FileObserverService.makeInitIntent(this);
            startService(initObserversIntent);
        }

        /// Load of saved instance state
        if (savedInstanceState != null) {
            mWaitingToPreview = (OCFile) savedInstanceState
                    .getParcelable(FileDisplayActivity.KEY_WAITING_TO_PREVIEW);
            mSyncInProgress = savedInstanceState.getBoolean(KEY_SYNC_IN_PROGRESS);
            mWaitingToSend = (OCFile) savedInstanceState.getParcelable(FileDisplayActivity.KEY_WAITING_TO_SEND);
        } else {
            mWaitingToPreview = null;
            mSyncInProgress = false;
            mWaitingToSend = null;
        }

        /// USER INTERFACE

        // Inflate and set the layout view
        setContentView(R.layout.files);

        // Navigation Drawer
        initDrawer();

        mProgressBar = (ProgressBar) findViewById(R.id.progressBar);
        mProgressBar.setIndeterminateDrawable(
                ContextCompat.getDrawable(this, R.drawable.actionbar_progress_indeterminate_horizontal));

        mDualPane = getResources().getBoolean(R.bool.large_land_layout);
        mLeftFragmentContainer = findViewById(R.id.left_fragment_container);
        mRightFragmentContainer = findViewById(R.id.right_fragment_container);

        // Action bar setup
        getSupportActionBar().setHomeButtonEnabled(true); // mandatory since Android ICS,
                                                          // according to the official
                                                          // documentation

        // enable ActionBar app icon to behave as action to toggle nav drawer
        //getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setHomeButtonEnabled(true);

        Log_OC.v(TAG, "onCreate() end");
    }

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);

        if (PermissionUtil.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
            // Check if we should show an explanation
            if (PermissionUtil.shouldShowRequestPermissionRationale(this,
                    Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
                // Show explanation to the user and then request permission
                Snackbar snackbar = Snackbar
                        .make(findViewById(R.id.ListLayout), R.string.permission_storage_access,
                                Snackbar.LENGTH_INDEFINITE)
                        .setAction(R.string.common_ok, new View.OnClickListener() {
                            @Override
                            public void onClick(View v) {
                                PermissionUtil.requestWriteExternalStoreagePermission(FileDisplayActivity.this);
                            }
                        });

                DisplayUtils.colorSnackbar(this, snackbar);

                snackbar.show();
            } else {
                // No explanation needed, request the permission.
                PermissionUtil.requestWriteExternalStoreagePermission(this);
            }
        }

        if (savedInstanceState == null) {
            createMinFragments();
        }

        mProgressBar.setIndeterminate(mSyncInProgress);
        // always AFTER setContentView(...) in onCreate(); to work around bug in its implementation

        setBackgroundText();
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
        switch (requestCode) {
        case PermissionUtil.PERMISSIONS_WRITE_EXTERNAL_STORAGE: {
            // If request is cancelled, result arrays are empty.
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                // permission was granted
                startSynchronization();
                // toggle on is save since this is the only scenario this code gets accessed
            } else {
                // permission denied --> do nothing
            }
            return;
        }
        }
    }

    @Override
    protected void onStart() {
        Log_OC.v(TAG, "onStart() start");
        super.onStart();
        Log_OC.v(TAG, "onStart() end");
    }

    @Override
    protected void onStop() {
        Log_OC.v(TAG, "onStop() start");
        super.onStop();
        Log_OC.v(TAG, "onStop() end");
    }

    @Override
    protected void onDestroy() {
        Log_OC.v(TAG, "onDestroy() start");
        super.onDestroy();
        Log_OC.v(TAG, "onDestroy() end");
    }

    /**
     * Called when the ownCloud {@link Account} associated to the Activity was just updated.
     */
    @Override
    protected void onAccountSet(boolean stateWasRecovered) {
        super.onAccountSet(stateWasRecovered);
        if (getAccount() != null) {
            /// Check whether the 'main' OCFile handled by the Activity is contained in the
            // current Account
            OCFile file = getFile();
            // get parent from path
            String parentPath = "";
            if (file != null) {
                if (file.isDown() && file.getLastSyncDateForProperties() == 0) {
                    // upload in progress - right now, files are not inserted in the local
                    // cache until the upload is successful get parent from path
                    parentPath = file.getRemotePath().substring(0,
                            file.getRemotePath().lastIndexOf(file.getFileName()));
                    if (getStorageManager().getFileByPath(parentPath) == null)
                        file = null; // not able to know the directory where the file is uploading
                } else {
                    file = getStorageManager().getFileByPath(file.getRemotePath());
                    // currentDir = null if not in the current Account
                }
            }
            if (file == null) {
                // fall back to root folder
                file = getStorageManager().getFileByPath(OCFile.ROOT_PATH); // never returns null
            }
            setFile(file);

            if (mAccountWasSet) {
                setUsernameInDrawer((RelativeLayout) findViewById(R.id.left_drawer), getAccount());
            }

            if (!stateWasRecovered) {
                Log_OC.d(TAG, "Initializing Fragments in onAccountChanged..");
                initFragmentsWithFile();
                if (file.isFolder()) {
                    startSyncFolderOperation(file, false);
                }

            } else {
                updateFragmentsVisibility(!file.isFolder());
                updateActionBarTitleAndHomeButton(file.isFolder() ? null : file);
            }
        }
    }

    private void createMinFragments() {
        OCFileListFragment listOfFiles = new OCFileListFragment();
        FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
        transaction.add(R.id.left_fragment_container, listOfFiles, TAG_LIST_OF_FILES);
        transaction.commit();
    }

    private void initFragmentsWithFile() {
        if (getAccount() != null && getFile() != null) {
            /// First fragment
            OCFileListFragment listOfFiles = getListOfFilesFragment();
            if (listOfFiles != null) {
                listOfFiles.listDirectory(getCurrentDir());
                // TODO Enable when "On Device" is recovered
                // listOfFiles.listDirectory(getCurrentDir(), MainApp.getOnlyOnDevice());

            } else {
                Log_OC.e(TAG, "Still have a chance to lose the initializacion of list fragment >(");
            }

            /// Second fragment
            OCFile file = getFile();
            Fragment secondFragment = chooseInitialSecondFragment(file);
            if (secondFragment != null) {
                setSecondFragment(secondFragment);
                updateFragmentsVisibility(true);
                updateActionBarTitleAndHomeButton(file);

            } else {
                cleanSecondFragment();
                if (file.isDown() && PreviewTextFragment.canBePreviewed(file))
                    startTextPreview(file);
            }

        } else {
            Log_OC.wtf(TAG, "initFragments() called with invalid NULLs!");
            if (getAccount() == null) {
                Log_OC.wtf(TAG, "\t account is NULL");
            }
            if (getFile() == null) {
                Log_OC.wtf(TAG, "\t file is NULL");
            }
        }
    }

    private Fragment chooseInitialSecondFragment(OCFile file) {
        Fragment secondFragment = null;
        if (file != null && !file.isFolder()) {
            if (file.isDown() && PreviewMediaFragment.canBePreviewed(file)
                    && file.getLastSyncDateForProperties() > 0 // temporal fix
            ) {
                int startPlaybackPosition = getIntent().getIntExtra(PreviewVideoActivity.EXTRA_START_POSITION, 0);
                boolean autoplay = getIntent().getBooleanExtra(PreviewVideoActivity.EXTRA_AUTOPLAY, true);
                secondFragment = new PreviewMediaFragment(file, getAccount(), startPlaybackPosition, autoplay);

            } else if (file.isDown() && PreviewTextFragment.canBePreviewed(file)) {
                secondFragment = null;
            } else {
                secondFragment = FileDetailFragment.newInstance(file, getAccount());
            }
        }
        return secondFragment;
    }

    /**
     * Replaces the second fragment managed by the activity with the received as
     * a parameter.
     * <p/>
     * Assumes never will be more than two fragments managed at the same time.
     *
     * @param fragment New second Fragment to set.
     */
    private void setSecondFragment(Fragment fragment) {
        FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
        transaction.replace(R.id.right_fragment_container, fragment, TAG_SECOND_FRAGMENT);
        transaction.commit();
    }

    private void updateFragmentsVisibility(boolean existsSecondFragment) {
        if (mDualPane) {
            if (mLeftFragmentContainer.getVisibility() != View.VISIBLE) {
                mLeftFragmentContainer.setVisibility(View.VISIBLE);
            }
            if (mRightFragmentContainer.getVisibility() != View.VISIBLE) {
                mRightFragmentContainer.setVisibility(View.VISIBLE);
            }

        } else if (existsSecondFragment) {
            if (mLeftFragmentContainer.getVisibility() != View.GONE) {
                mLeftFragmentContainer.setVisibility(View.GONE);
            }
            if (mRightFragmentContainer.getVisibility() != View.VISIBLE) {
                mRightFragmentContainer.setVisibility(View.VISIBLE);
            }

        } else {
            if (mLeftFragmentContainer.getVisibility() != View.VISIBLE) {
                mLeftFragmentContainer.setVisibility(View.VISIBLE);
            }
            if (mRightFragmentContainer.getVisibility() != View.GONE) {
                mRightFragmentContainer.setVisibility(View.GONE);
            }
        }
    }

    private OCFileListFragment getListOfFilesFragment() {
        Fragment listOfFiles = getSupportFragmentManager().findFragmentByTag(FileDisplayActivity.TAG_LIST_OF_FILES);
        if (listOfFiles != null) {
            return (OCFileListFragment) listOfFiles;
        }
        Log_OC.wtf(TAG, "Access to unexisting list of files fragment!!");
        return null;
    }

    public FileFragment getSecondFragment() {
        Fragment second = getSupportFragmentManager().findFragmentByTag(FileDisplayActivity.TAG_SECOND_FRAGMENT);
        if (second != null) {
            return (FileFragment) second;
        }
        return null;
    }

    protected void cleanSecondFragment() {
        Fragment second = getSecondFragment();
        if (second != null) {
            FragmentTransaction tr = getSupportFragmentManager().beginTransaction();
            tr.remove(second);
            tr.commit();
        }
        updateFragmentsVisibility(false);
        updateActionBarTitleAndHomeButton(null);
    }

    protected void refreshListOfFilesFragment() {
        OCFileListFragment fileListFragment = getListOfFilesFragment();
        if (fileListFragment != null) {
            fileListFragment.listDirectory();
            // TODO Enable when "On Device" is recovered ?
            // fileListFragment.listDirectory(MainApp.getOnlyOnDevice());
        }
    }

    protected void refreshSecondFragment(String downloadEvent, String downloadedRemotePath, boolean success) {
        FileFragment secondFragment = getSecondFragment();
        boolean waitedPreview = (mWaitingToPreview != null
                && mWaitingToPreview.getRemotePath().equals(downloadedRemotePath));
        if (secondFragment != null && secondFragment instanceof FileDetailFragment) {
            FileDetailFragment detailsFragment = (FileDetailFragment) secondFragment;
            OCFile fileInFragment = detailsFragment.getFile();
            if (fileInFragment != null && !downloadedRemotePath.equals(fileInFragment.getRemotePath())) {
                // the user browsed to other file ; forget the automatic preview 
                mWaitingToPreview = null;

            } else if (downloadEvent.equals(FileDownloader.getDownloadAddedMessage())) {
                // grant that the right panel updates the progress bar
                detailsFragment.listenForTransferProgress();
                detailsFragment.updateFileDetails(true, false);

            } else if (downloadEvent.equals(FileDownloader.getDownloadFinishMessage())) {
                //  update the right panel
                boolean detailsFragmentChanged = false;
                if (waitedPreview) {
                    if (success) {
                        mWaitingToPreview = getStorageManager().getFileById(mWaitingToPreview.getFileId()); // update the file from database,
                                                                                                            // for the local storage path
                        if (PreviewMediaFragment.canBePreviewed(mWaitingToPreview)) {
                            startMediaPreview(mWaitingToPreview, 0, true);
                            detailsFragmentChanged = true;
                        } else if (PreviewTextFragment.canBePreviewed(mWaitingToPreview)) {
                            startTextPreview(mWaitingToPreview);
                            detailsFragmentChanged = true;
                        } else {
                            getFileOperationsHelper().openFile(mWaitingToPreview);
                        }
                    }
                    mWaitingToPreview = null;
                }
                if (!detailsFragmentChanged) {
                    detailsFragment.updateFileDetails(false, (success));
                }
            }
        }
    }

    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        boolean drawerOpen = mDrawerLayout.isDrawerOpen(GravityCompat.START);
        menu.findItem(R.id.action_sort).setVisible(!drawerOpen);
        menu.findItem(R.id.action_sync_account).setVisible(!drawerOpen);
        menu.findItem(R.id.action_switch_view).setVisible(!drawerOpen);

        return super.onPrepareOptionsMenu(menu);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.main_menu, menu);
        menu.findItem(R.id.action_create_dir).setVisible(false);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        boolean retval = true;
        switch (item.getItemId()) {
        case R.id.action_sync_account: {
            startSynchronization();
            break;
        }
        case android.R.id.home: {
            FileFragment second = getSecondFragment();
            OCFile currentDir = getCurrentDir();
            if (mDrawerLayout.isDrawerOpen(GravityCompat.START)) {
                mDrawerLayout.closeDrawer(GravityCompat.START);
            } else if ((currentDir != null && currentDir.getParentId() != 0)
                    || (second != null && second.getFile() != null)) {
                onBackPressed();

            } else {
                mDrawerLayout.openDrawer(GravityCompat.START);
            }
            break;
        }
        case R.id.action_sort: {
            SharedPreferences appPreferences = PreferenceManager.getDefaultSharedPreferences(this);

            // Read sorting order, default to sort by name ascending
            Integer sortOrder = appPreferences.getInt("sortOrder", FileStorageUtils.SORT_NAME);

            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setTitle(R.string.actionbar_sort_title).setSingleChoiceItems(R.array.actionbar_sortby,
                    sortOrder, new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int which) {
                            switch (which) {
                            case 0:
                                sortByName(true);
                                break;
                            case 1:
                                sortByDate(false);
                                break;
                            }

                            dialog.dismiss();
                        }
                    });
            builder.create().show();
            break;
        }
        case R.id.action_switch_view: {
            if (isGridView()) {
                item.setTitle(getString(R.string.action_switch_grid_view));
                item.setIcon(ContextCompat.getDrawable(getApplicationContext(), R.drawable.ic_view_module));
                getListOfFilesFragment().setListAsPreferred();
            } else {
                item.setTitle(getApplicationContext().getString(R.string.action_switch_list_view));
                item.setIcon(ContextCompat.getDrawable(getApplicationContext(), R.drawable.ic_view_list));
                getListOfFilesFragment().setGridAsPreferred();
            }
            return true;
        }
        default:
            retval = super.onOptionsItemSelected(item);
        }
        return retval;
    }

    private void startSynchronization() {
        Log_OC.d(TAG, "Got to start sync");
        if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.KITKAT) {
            Log_OC.d(TAG, "Canceling all syncs for " + MainApp.getAuthority());
            ContentResolver.cancelSync(null, MainApp.getAuthority());
            // cancel the current synchronizations of any ownCloud account
            Bundle bundle = new Bundle();
            bundle.putBoolean(ContentResolver.SYNC_EXTRAS_MANUAL, true);
            bundle.putBoolean(ContentResolver.SYNC_EXTRAS_EXPEDITED, true);
            Log_OC.d(TAG, "Requesting sync for " + getAccount().name + " at " + MainApp.getAuthority());
            ContentResolver.requestSync(getAccount(), MainApp.getAuthority(), bundle);
        } else {
            Log_OC.d(TAG,
                    "Requesting sync for " + getAccount().name + " at " + MainApp.getAuthority() + " with new API");
            SyncRequest.Builder builder = new SyncRequest.Builder();
            builder.setSyncAdapter(getAccount(), MainApp.getAuthority());
            builder.setExpedited(true);
            builder.setManual(true);
            builder.syncOnce();

            // Fix bug in Android Lollipop when you click on refresh the whole account
            Bundle extras = new Bundle();
            builder.setExtras(extras);

            SyncRequest request = builder.build();
            ContentResolver.requestSync(request);
        }
    }

    /**
     * Called, when the user selected something for uploading
     *
     */
    @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {

        if (requestCode == ACTION_SELECT_CONTENT_FROM_APPS
                && (resultCode == RESULT_OK || resultCode == UploadFilesActivity.RESULT_OK_AND_MOVE)) {

            //getClipData is only supported on api level 16+, Jelly Bean
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN && data.getClipData() != null
                    && data.getClipData().getItemCount() > 0) {

                for (int i = 0; i < data.getClipData().getItemCount(); i++) {
                    Intent intent = new Intent();
                    intent.setData(data.getClipData().getItemAt(i).getUri());
                    requestSimpleUpload(intent, resultCode);
                }

            } else {
                requestSimpleUpload(data, resultCode);
            }
        } else if (requestCode == ACTION_SELECT_MULTIPLE_FILES
                && (resultCode == RESULT_OK || resultCode == UploadFilesActivity.RESULT_OK_AND_MOVE)) {
            requestMultipleUpload(data, resultCode);

        } else if (requestCode == ACTION_MOVE_FILES && resultCode == RESULT_OK) {
            final Intent fData = data;
            final int fResultCode = resultCode;
            getHandler().postDelayed(new Runnable() {
                @Override
                public void run() {
                    requestMoveOperation(fData, fResultCode);
                }
            }, DELAY_TO_REQUEST_OPERATIONS_LATER);

        } else if (requestCode == ACTION_COPY_FILES && resultCode == RESULT_OK) {

            final Intent fData = data;
            final int fResultCode = resultCode;
            getHandler().postDelayed(new Runnable() {
                @Override
                public void run() {
                    requestCopyOperation(fData, fResultCode);
                }
            }, DELAY_TO_REQUEST_OPERATIONS_LATER);

        } else {
            super.onActivityResult(requestCode, resultCode, data);
        }

    }

    private void requestMultipleUpload(Intent data, int resultCode) {
        String[] filePaths = data.getStringArrayExtra(UploadFilesActivity.EXTRA_CHOSEN_FILES);
        if (filePaths != null) {
            String[] remotePaths = new String[filePaths.length];
            String remotePathBase = getCurrentDir().getRemotePath();
            for (int j = 0; j < remotePaths.length; j++) {
                remotePaths[j] = remotePathBase + (new File(filePaths[j])).getName();
            }

            Intent i = new Intent(this, FileUploader.class);
            i.putExtra(FileUploader.KEY_ACCOUNT, getAccount());
            i.putExtra(FileUploader.KEY_LOCAL_FILE, filePaths);
            i.putExtra(FileUploader.KEY_REMOTE_FILE, remotePaths);
            i.putExtra(FileUploader.KEY_UPLOAD_TYPE, FileUploader.UPLOAD_MULTIPLE_FILES);
            if (resultCode == UploadFilesActivity.RESULT_OK_AND_MOVE)
                i.putExtra(FileUploader.KEY_LOCAL_BEHAVIOUR, FileUploader.LOCAL_BEHAVIOUR_MOVE);
            startService(i);

        } else {
            Log_OC.d(TAG, "User clicked on 'Update' with no selection");
            Toast t = Toast.makeText(this, getString(R.string.filedisplay_no_file_selected), Toast.LENGTH_LONG);
            t.show();
            return;
        }
    }

    private void requestSimpleUpload(Intent data, int resultCode) {
        String filePath = null;
        String mimeType = null;

        Uri selectedImageUri = data.getData();

        try {
            mimeType = getContentResolver().getType(selectedImageUri);

            String fileManagerString = selectedImageUri.getPath();
            String selectedImagePath = UriUtils.getLocalPath(selectedImageUri, this);

            if (selectedImagePath != null)
                filePath = selectedImagePath;
            else
                filePath = fileManagerString;

        } catch (Exception e) {
            Log_OC.e(TAG, "Unexpected exception when trying to read the result of " + "Intent.ACTION_GET_CONTENT",
                    e);

        } finally {
            if (filePath == null) {
                Log_OC.e(TAG, "Couldn't resolve path to file");
                Toast t = Toast.makeText(this, getString(R.string.filedisplay_unexpected_bad_get_content),
                        Toast.LENGTH_LONG);
                t.show();
                return;
            }
        }

        Intent i = new Intent(this, FileUploader.class);
        i.putExtra(FileUploader.KEY_ACCOUNT, getAccount());
        OCFile currentDir = getCurrentDir();
        String remotePath = (currentDir != null) ? currentDir.getRemotePath() : OCFile.ROOT_PATH;

        if (filePath.startsWith(UriUtils.URI_CONTENT_SCHEME)) {
            Cursor cursor = getContentResolver().query(Uri.parse(filePath), null, null, null, null);
            try {
                if (cursor != null && cursor.moveToFirst()) {
                    String displayName = cursor.getString(cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME));
                    Log_OC.v(TAG, "Display Name: " + displayName);

                    displayName.replace(File.separatorChar, '_');
                    displayName.replace(File.pathSeparatorChar, '_');
                    remotePath += displayName + DisplayUtils.getComposedFileExtension(filePath);

                }
                // and what happens in case of error?; wrong target name for the upload
            } finally {
                cursor.close();
            }

        } else {
            remotePath += new File(filePath).getName();
        }

        i.putExtra(FileUploader.KEY_LOCAL_FILE, filePath);
        i.putExtra(FileUploader.KEY_REMOTE_FILE, remotePath);
        i.putExtra(FileUploader.KEY_MIME_TYPE, mimeType);
        i.putExtra(FileUploader.KEY_UPLOAD_TYPE, FileUploader.UPLOAD_SINGLE_FILE);
        if (resultCode == UploadFilesActivity.RESULT_OK_AND_MOVE)
            i.putExtra(FileUploader.KEY_LOCAL_BEHAVIOUR, FileUploader.LOCAL_BEHAVIOUR_MOVE);
        startService(i);
    }

    /**
     * Request the operation for moving the file/folder from one path to another
     *
     * @param data       Intent received
     * @param resultCode Result code received
     */
    private void requestMoveOperation(Intent data, int resultCode) {
        OCFile folderToMoveAt = (OCFile) data.getParcelableExtra(FolderPickerActivity.EXTRA_FOLDER);
        OCFile targetFile = (OCFile) data.getParcelableExtra(FolderPickerActivity.EXTRA_FILE);
        getFileOperationsHelper().moveFile(folderToMoveAt, targetFile);
    }

    /**
     * Request the operation for copying the file/folder from one path to another
     *
     * @param data       Intent received
     * @param resultCode Result code received
     */
    private void requestCopyOperation(Intent data, int resultCode) {
        OCFile folderToMoveAt = data.getParcelableExtra(FolderPickerActivity.EXTRA_FOLDER);
        OCFile targetFile = data.getParcelableExtra(FolderPickerActivity.EXTRA_FILE);
        getFileOperationsHelper().copyFile(folderToMoveAt, targetFile);
    }

    @Override
    public void onBackPressed() {
        boolean isFabOpen = isFabOpen();
        boolean isDrawerOpen = isDrawerOpen();

        /*
         * BackPressed priority/hierarchy:
         *    1. close drawer if opened
         *    2. close FAB if open (only if drawer isn't open)
         *    3. navigate up (only if drawer and FAB aren't open)
         */
        if (isDrawerOpen && isFabOpen) {
            // close drawer first
            super.onBackPressed();
        } else if (isDrawerOpen && !isFabOpen) {
            // close drawer
            super.onBackPressed();
        } else if (!isDrawerOpen && isFabOpen) {
            // close fab
            getListOfFilesFragment().getFabMain().collapse();
        } else {
            // all closed
            OCFileListFragment listOfFiles = getListOfFilesFragment();
            if (mDualPane || getSecondFragment() == null) {
                OCFile currentDir = getCurrentDir();
                if (currentDir == null || currentDir.getParentId() == FileDataStorageManager.ROOT_PARENT_ID) {
                    finish();
                    return;
                }
                if (listOfFiles != null) { // should never be null, indeed
                    listOfFiles.onBrowseUp();
                }
            }
            if (listOfFiles != null) { // should never be null, indeed
                setFile(listOfFiles.getCurrentFile());
            }
            cleanSecondFragment();
        }
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        // responsibility of restore is preferred in onCreate() before than in
        // onRestoreInstanceState when there are Fragments involved
        Log_OC.v(TAG, "onSaveInstanceState() start");
        super.onSaveInstanceState(outState);
        outState.putParcelable(FileDisplayActivity.KEY_WAITING_TO_PREVIEW, mWaitingToPreview);
        outState.putBoolean(FileDisplayActivity.KEY_SYNC_IN_PROGRESS, mSyncInProgress);
        //outState.putBoolean(FileDisplayActivity.KEY_REFRESH_SHARES_IN_PROGRESS,
        // mRefreshSharesInProgress);
        outState.putParcelable(FileDisplayActivity.KEY_WAITING_TO_SEND, mWaitingToSend);

        Log_OC.v(TAG, "onSaveInstanceState() end");
    }

    @Override
    protected void onResume() {
        Log_OC.v(TAG, "onResume() start");
        super.onResume();
        // refresh Navigation Drawer account list
        mNavigationDrawerAdapter.updateAccountList();

        // refresh list of files
        refreshListOfFilesFragment();

        // Listen for sync messages
        IntentFilter syncIntentFilter = new IntentFilter(FileSyncAdapter.EVENT_FULL_SYNC_START);
        syncIntentFilter.addAction(FileSyncAdapter.EVENT_FULL_SYNC_END);
        syncIntentFilter.addAction(FileSyncAdapter.EVENT_FULL_SYNC_FOLDER_CONTENTS_SYNCED);
        syncIntentFilter.addAction(RefreshFolderOperation.EVENT_SINGLE_FOLDER_CONTENTS_SYNCED);
        syncIntentFilter.addAction(RefreshFolderOperation.EVENT_SINGLE_FOLDER_SHARES_SYNCED);
        mSyncBroadcastReceiver = new SyncBroadcastReceiver();
        registerReceiver(mSyncBroadcastReceiver, syncIntentFilter);
        //LocalBroadcastManager.getInstance(this).registerReceiver(mSyncBroadcastReceiver,
        // syncIntentFilter);

        // Listen for upload messages
        IntentFilter uploadIntentFilter = new IntentFilter(FileUploader.getUploadFinishMessage());
        mUploadFinishReceiver = new UploadFinishReceiver();
        registerReceiver(mUploadFinishReceiver, uploadIntentFilter);

        // Listen for download messages
        IntentFilter downloadIntentFilter = new IntentFilter(FileDownloader.getDownloadAddedMessage());
        downloadIntentFilter.addAction(FileDownloader.getDownloadFinishMessage());
        mDownloadFinishReceiver = new DownloadFinishReceiver();
        registerReceiver(mDownloadFinishReceiver, downloadIntentFilter);

        Log_OC.v(TAG, "onResume() end");

    }

    @Override
    protected void onPause() {
        Log_OC.v(TAG, "onPause() start");
        if (mSyncBroadcastReceiver != null) {
            unregisterReceiver(mSyncBroadcastReceiver);
            //LocalBroadcastManager.getInstance(this).unregisterReceiver(mSyncBroadcastReceiver);
            mSyncBroadcastReceiver = null;
        }
        if (mUploadFinishReceiver != null) {
            unregisterReceiver(mUploadFinishReceiver);
            mUploadFinishReceiver = null;
        }
        if (mDownloadFinishReceiver != null) {
            unregisterReceiver(mDownloadFinishReceiver);
            mDownloadFinishReceiver = null;
        }

        super.onPause();
        Log_OC.v(TAG, "onPause() end");
    }

    public boolean isFabOpen() {
        if (getListOfFilesFragment() != null && getListOfFilesFragment().getFabMain() != null
                && getListOfFilesFragment().getFabMain().isExpanded()) {
            return true;
        } else {
            return false;
        }
    }

    private class SyncBroadcastReceiver extends BroadcastReceiver {

        /**
         * {@link BroadcastReceiver} to enable syncing feedback in UI
         */
        @Override
        public void onReceive(Context context, Intent intent) {
            try {
                String event = intent.getAction();
                Log_OC.d(TAG, "Received broadcast " + event);
                String accountName = intent.getStringExtra(FileSyncAdapter.EXTRA_ACCOUNT_NAME);
                String synchFolderRemotePath = intent.getStringExtra(FileSyncAdapter.EXTRA_FOLDER_PATH);
                RemoteOperationResult synchResult = (RemoteOperationResult) intent
                        .getSerializableExtra(FileSyncAdapter.EXTRA_RESULT);
                boolean sameAccount = (getAccount() != null && accountName.equals(getAccount().name)
                        && getStorageManager() != null);

                if (sameAccount) {

                    if (FileSyncAdapter.EVENT_FULL_SYNC_START.equals(event)) {
                        mSyncInProgress = true;

                    } else {
                        OCFile currentFile = (getFile() == null) ? null
                                : getStorageManager().getFileByPath(getFile().getRemotePath());
                        OCFile currentDir = (getCurrentDir() == null) ? null
                                : getStorageManager().getFileByPath(getCurrentDir().getRemotePath());

                        if (currentDir == null) {
                            // current folder was removed from the server 
                            Toast.makeText(FileDisplayActivity.this,
                                    String.format(getString(R.string.sync_current_folder_was_removed),
                                            synchFolderRemotePath),
                                    Toast.LENGTH_LONG).show();

                            browseToRoot();

                        } else {
                            if (currentFile == null && !getFile().isFolder()) {
                                // currently selected file was removed in the server, and now we
                                // know it
                                cleanSecondFragment();
                                currentFile = currentDir;
                            }

                            if (synchFolderRemotePath != null
                                    && currentDir.getRemotePath().equals(synchFolderRemotePath)) {
                                OCFileListFragment fileListFragment = getListOfFilesFragment();
                                if (fileListFragment != null) {
                                    fileListFragment.listDirectory();
                                    // TODO Enable when "On Device" is recovered ?
                                    // fileListFragment.listDirectory(currentDir,
                                    // MainApp.getOnlyOnDevice());
                                }
                            }
                            setFile(currentFile);
                        }

                        mSyncInProgress = (!FileSyncAdapter.EVENT_FULL_SYNC_END.equals(event)
                                && !RefreshFolderOperation.EVENT_SINGLE_FOLDER_SHARES_SYNCED.equals(event));

                        if (RefreshFolderOperation.EVENT_SINGLE_FOLDER_CONTENTS_SYNCED.equals(event) && /// TODO refactor and make common

                                synchResult != null && !synchResult.isSuccess()
                                && (synchResult.getCode() == ResultCode.UNAUTHORIZED
                                        || synchResult.isIdPRedirection() || (synchResult.isException()
                                                && synchResult.getException() instanceof AuthenticatorException))) {

                            requestCredentialsUpdate(context);

                        }

                    }
                    removeStickyBroadcast(intent);
                    Log_OC.d(TAG, "Setting progress visibility to " + mSyncInProgress);
                    mProgressBar.setIndeterminate(mSyncInProgress);

                    setBackgroundText();

                }

                if (synchResult != null) {
                    if (synchResult.getCode()
                            .equals(RemoteOperationResult.ResultCode.SSL_RECOVERABLE_PEER_UNVERIFIED)) {
                        mLastSslUntrustedServerResult = synchResult;
                    }
                }
            } catch (RuntimeException e) {
                // avoid app crashes after changing the serial id of RemoteOperationResult 
                // in owncloud library with broadcast notifications pending to process
                removeStickyBroadcast(intent);
            }
        }
    }

    /**
     * Show a text message on screen view for notifying user if content is
     * loading or folder is empty
     */
    private void setBackgroundText() {
        OCFileListFragment ocFileListFragment = getListOfFilesFragment();
        if (ocFileListFragment != null) {
            int message = R.string.file_list_loading;
            if (!mSyncInProgress) {
                // In case file list is empty
                message = R.string.file_list_empty;
            }
            ocFileListFragment.setMessageForEmptyList(getString(message));
        } else {
            Log_OC.e(TAG, "OCFileListFragment is null");
        }
    }

    /**
     * Once the file upload has finished -> update view
     */
    private class UploadFinishReceiver extends BroadcastReceiver {
        /**
         * Once the file upload has finished -> update view
         *
         * @author David A. Velasco
         * {@link BroadcastReceiver} to enable upload feedback in UI
         */
        @Override
        public void onReceive(Context context, Intent intent) {
            try {
                String uploadedRemotePath = intent.getStringExtra(FileUploader.EXTRA_REMOTE_PATH);
                String accountName = intent.getStringExtra(FileUploader.ACCOUNT_NAME);
                boolean sameAccount = getAccount() != null && accountName.equals(getAccount().name);
                OCFile currentDir = getCurrentDir();
                boolean isDescendant = (currentDir != null) && (uploadedRemotePath != null)
                        && (uploadedRemotePath.startsWith(currentDir.getRemotePath()));

                if (sameAccount && isDescendant) {
                    String linkedToRemotePath = intent.getStringExtra(FileUploader.EXTRA_LINKED_TO_PATH);
                    if (linkedToRemotePath == null || isAscendant(linkedToRemotePath)) {
                        refreshListOfFilesFragment();
                    }
                }

                boolean uploadWasFine = intent.getBooleanExtra(FileUploader.EXTRA_UPLOAD_RESULT, false);
                boolean renamedInUpload = getFile().getRemotePath()
                        .equals(intent.getStringExtra(FileUploader.EXTRA_OLD_REMOTE_PATH));
                boolean sameFile = getFile().getRemotePath().equals(uploadedRemotePath) || renamedInUpload;
                FileFragment details = getSecondFragment();
                boolean detailFragmentIsShown = (details != null && details instanceof FileDetailFragment);

                if (sameAccount && sameFile && detailFragmentIsShown) {
                    if (uploadWasFine) {
                        setFile(getStorageManager().getFileByPath(uploadedRemotePath));
                    }
                    if (renamedInUpload) {
                        String newName = (new File(uploadedRemotePath)).getName();
                        Toast msg = Toast.makeText(context,
                                String.format(getString(R.string.filedetails_renamed_in_upload_msg), newName),
                                Toast.LENGTH_LONG);
                        msg.show();
                    }
                    if (uploadWasFine || getFile().fileExists()) {
                        ((FileDetailFragment) details).updateFileDetails(false, true);
                    } else {
                        cleanSecondFragment();
                    }

                    // Force the preview if the file is an image or text file
                    if (uploadWasFine) {
                        OCFile ocFile = getFile();
                        if (PreviewImageFragment.canBePreviewed(ocFile))
                            startImagePreview(getFile());
                        else if (PreviewTextFragment.canBePreviewed(ocFile))
                            startTextPreview(ocFile);
                        // TODO what about other kind of previews?
                    }
                }

                mProgressBar.setIndeterminate(false);
            } finally {
                if (intent != null) {
                    removeStickyBroadcast(intent);
                }
            }

        }

        // TODO refactor this receiver, and maybe DownloadFinishReceiver; this method is duplicated :S
        private boolean isAscendant(String linkedToRemotePath) {
            OCFile currentDir = getCurrentDir();
            return (currentDir != null && currentDir.getRemotePath().startsWith(linkedToRemotePath));
        }

    }

    /**
     * Class waiting for broadcast events from the {@link FileDownloader} service.
     *
     * Updates the UI when a download is started or finished, provided that it is relevant for the
     * current folder.
     */
    private class DownloadFinishReceiver extends BroadcastReceiver {

        @Override
        public void onReceive(Context context, Intent intent) {
            try {
                boolean sameAccount = isSameAccount(intent);
                String downloadedRemotePath = intent.getStringExtra(FileDownloader.EXTRA_REMOTE_PATH);
                boolean isDescendant = isDescendant(downloadedRemotePath);

                if (sameAccount && isDescendant) {
                    String linkedToRemotePath = intent.getStringExtra(FileDownloader.EXTRA_LINKED_TO_PATH);
                    if (linkedToRemotePath == null || isAscendant(linkedToRemotePath)) {
                        refreshListOfFilesFragment();
                    }
                    refreshSecondFragment(intent.getAction(), downloadedRemotePath,
                            intent.getBooleanExtra(FileDownloader.EXTRA_DOWNLOAD_RESULT, false));
                }

                if (mWaitingToSend != null) {
                    mWaitingToSend = getStorageManager().getFileByPath(mWaitingToSend.getRemotePath());
                    if (mWaitingToSend.isDown()) {
                        sendDownloadedFile();
                    }
                }

            } finally {
                if (intent != null) {
                    removeStickyBroadcast(intent);
                }
            }
        }

        private boolean isDescendant(String downloadedRemotePath) {
            OCFile currentDir = getCurrentDir();
            return (currentDir != null && downloadedRemotePath != null
                    && downloadedRemotePath.startsWith(currentDir.getRemotePath()));
        }

        private boolean isAscendant(String linkedToRemotePath) {
            OCFile currentDir = getCurrentDir();
            return (currentDir != null && currentDir.getRemotePath().startsWith(linkedToRemotePath));
        }

        private boolean isSameAccount(Intent intent) {
            String accountName = intent.getStringExtra(FileDownloader.ACCOUNT_NAME);
            return (accountName != null && getAccount() != null && accountName.equals(getAccount().name));
        }
    }

    public void browseToRoot() {
        OCFileListFragment listOfFiles = getListOfFilesFragment();
        if (listOfFiles != null) { // should never be null, indeed
            OCFile root = getStorageManager().getFileByPath(OCFile.ROOT_PATH);
            listOfFiles.listDirectory(root);
            // TODO Enable when "On Device" is recovered ?
            // listOfFiles.listDirectory(root, MainApp.getOnlyOnDevice());
            setFile(listOfFiles.getCurrentFile());
            startSyncFolderOperation(root, false);
        }
        cleanSecondFragment();
    }

    /**
     * {@inheritDoc}
     * <p/>
     * Updates action bar and second fragment, if in dual pane mode.
     */
    @Override
    public void onBrowsedDownTo(OCFile directory) {
        setFile(directory);
        cleanSecondFragment();
        // Sync Folder
        startSyncFolderOperation(directory, false);
    }

    /**
     * Shows the information of the {@link OCFile} received as a
     * parameter in the second fragment.
     *
     * @param file {@link OCFile} whose details will be shown
     */
    @Override
    public void showDetails(OCFile file) {
        Fragment detailFragment = FileDetailFragment.newInstance(file, getAccount());
        setSecondFragment(detailFragment);
        updateFragmentsVisibility(true);
        updateActionBarTitleAndHomeButton(file);
        setFile(file);
    }

    @Override
    protected void updateActionBarTitleAndHomeButton(OCFile chosenFile) {
        if (mDualPane) {
            // in dual pane mode, keep the focus of title an action bar in the current folder
            super.updateActionBarTitleAndHomeButton(getCurrentDir());

        } else {
            super.updateActionBarTitleAndHomeButton(chosenFile);
        }

    }

    @Override
    protected ServiceConnection newTransferenceServiceConnection() {
        return new ListServiceConnection();
    }

    /**
     * Defines callbacks for service binding, passed to bindService()
     */
    private class ListServiceConnection implements ServiceConnection {

        @Override
        public void onServiceConnected(ComponentName component, IBinder service) {
            if (component.equals(new ComponentName(FileDisplayActivity.this, FileDownloader.class))) {
                Log_OC.d(TAG, "Download service connected");
                mDownloaderBinder = (FileDownloaderBinder) service;
                if (mWaitingToPreview != null)
                    if (getStorageManager() != null) {
                        // update the file
                        mWaitingToPreview = getStorageManager().getFileById(mWaitingToPreview.getFileId());
                        if (!mWaitingToPreview.isDown()) {
                            requestForDownload();
                        }
                    }

            } else if (component.equals(new ComponentName(FileDisplayActivity.this, FileUploader.class))) {
                Log_OC.d(TAG, "Upload service connected");
                mUploaderBinder = (FileUploaderBinder) service;
            } else {
                return;
            }
            // a new chance to get the mDownloadBinder through
            // getFileDownloadBinder() - THIS IS A MESS
            OCFileListFragment listOfFiles = getListOfFilesFragment();
            if (listOfFiles != null) {
                listOfFiles.listDirectory();
                // TODO Enable when "On Device" is recovered ?
                // listOfFiles.listDirectory(MainApp.getOnlyOnDevice());
            }
            FileFragment secondFragment = getSecondFragment();
            if (secondFragment != null && secondFragment instanceof FileDetailFragment) {
                FileDetailFragment detailFragment = (FileDetailFragment) secondFragment;
                detailFragment.listenForTransferProgress();
                detailFragment.updateFileDetails(false, false);
            }
        }

        @Override
        public void onServiceDisconnected(ComponentName component) {
            if (component.equals(new ComponentName(FileDisplayActivity.this, FileDownloader.class))) {
                Log_OC.d(TAG, "Download service disconnected");
                mDownloaderBinder = null;
            } else if (component.equals(new ComponentName(FileDisplayActivity.this, FileUploader.class))) {
                Log_OC.d(TAG, "Upload service disconnected");
                mUploaderBinder = null;
            }
        }
    }

    @Override
    public void onSavedCertificate() {
        startSyncFolderOperation(getCurrentDir(), false);
    }

    @Override
    public void onFailedSavingCertificate() {
        ConfirmationDialogFragment dialog = ConfirmationDialogFragment.newInstance(R.string.ssl_validator_not_saved,
                new String[] {}, R.string.common_ok, -1, -1);
        dialog.show(getSupportFragmentManager(), DIALOG_CERT_NOT_SAVED);
    }

    @Override
    public void onCancelCertificate() {
        // nothing to do
    }

    /**
     * Updates the view associated to the activity after the finish of some operation over files
     * in the current account.
     *
     * @param operation Removal operation performed.
     * @param result    Result of the removal.
     */
    @Override
    public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
        super.onRemoteOperationFinish(operation, result);

        if (operation instanceof RemoveFileOperation) {
            onRemoveFileOperationFinish((RemoveFileOperation) operation, result);

        } else if (operation instanceof RenameFileOperation) {
            onRenameFileOperationFinish((RenameFileOperation) operation, result);

        } else if (operation instanceof SynchronizeFileOperation) {
            onSynchronizeFileOperationFinish((SynchronizeFileOperation) operation, result);

        } else if (operation instanceof CreateFolderOperation) {
            onCreateFolderOperationFinish((CreateFolderOperation) operation, result);

        } else if (operation instanceof MoveFileOperation) {
            onMoveFileOperationFinish((MoveFileOperation) operation, result);

        } else if (operation instanceof CopyFileOperation) {
            onCopyFileOperationFinish((CopyFileOperation) operation, result);
        }

    }

    private void refreshShowDetails() {
        FileFragment details = getSecondFragment();
        if (details != null) {
            OCFile file = details.getFile();
            if (file != null) {
                file = getStorageManager().getFileByPath(file.getRemotePath());
                if (details instanceof PreviewMediaFragment) {
                    // Refresh  OCFile of the fragment
                    ((PreviewMediaFragment) details).updateFile(file);
                } else if (details instanceof PreviewTextFragment) {
                    // Refresh  OCFile of the fragment
                    ((PreviewTextFragment) details).updateFile(file);
                } else {
                    showDetails(file);
                }
            }
            invalidateOptionsMenu();
        }
    }

    /**
     * Updates the view associated to the activity after the finish of an operation trying to
     * remove a file.
     * 
     * @param operation     Removal operation performed.
     * @param result        Result of the removal.
     */
    private void onRemoveFileOperationFinish(RemoveFileOperation operation, RemoteOperationResult result) {
        Toast msg = Toast.makeText(this,
                ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()), Toast.LENGTH_LONG);
        msg.show();

        if (result.isSuccess()) {
            OCFile removedFile = operation.getFile();
            FileFragment second = getSecondFragment();
            if (second != null && removedFile.equals(second.getFile())) {
                if (second instanceof PreviewMediaFragment) {
                    ((PreviewMediaFragment) second).stopPreview(true);
                }
                setFile(getStorageManager().getFileById(removedFile.getParentId()));
                cleanSecondFragment();
            }
            if (getStorageManager().getFileById(removedFile.getParentId()).equals(getCurrentDir())) {
                refreshListOfFilesFragment();
            }
            invalidateOptionsMenu();
        } else {
            if (result.isSslRecoverableException()) {
                mLastSslUntrustedServerResult = result;
                showUntrustedCertDialog(mLastSslUntrustedServerResult);
            }
        }
    }

    /**
     * Updates the view associated to the activity after the finish of an operation trying to move a
     * file.
     *
     * @param operation Move operation performed.
     * @param result    Result of the move operation.
     */
    private void onMoveFileOperationFinish(MoveFileOperation operation, RemoteOperationResult result) {
        if (result.isSuccess()) {
            refreshListOfFilesFragment();
        } else {
            try {
                Toast msg = Toast.makeText(FileDisplayActivity.this,
                        ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()),
                        Toast.LENGTH_LONG);
                msg.show();

            } catch (NotFoundException e) {
                Log_OC.e(TAG, "Error while trying to show fail message ", e);
            }
        }
    }

    /**
     * Updates the view associated to the activity after the finish of an operation trying to copy a
     * file.
     *
     * @param operation Copy operation performed.
     * @param result    Result of the copy operation.
     */
    private void onCopyFileOperationFinish(CopyFileOperation operation, RemoteOperationResult result) {
        if (result.isSuccess()) {
            refreshListOfFilesFragment();
        } else {
            try {
                Toast msg = Toast.makeText(FileDisplayActivity.this,
                        ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()),
                        Toast.LENGTH_LONG);
                msg.show();

            } catch (NotFoundException e) {
                Log_OC.e(TAG, "Error while trying to show fail message ", e);
            }
        }
    }

    /**
     * Updates the view associated to the activity after the finish of an operation trying to rename
     * a file.
     * 
     * @param operation     Renaming operation performed.
     * @param result        Result of the renaming.
     */
    private void onRenameFileOperationFinish(RenameFileOperation operation, RemoteOperationResult result) {
        OCFile renamedFile = operation.getFile();
        if (result.isSuccess()) {
            FileFragment details = getSecondFragment();
            if (details != null) {
                if (details instanceof FileDetailFragment && renamedFile.equals(details.getFile())) {
                    ((FileDetailFragment) details).updateFileDetails(renamedFile, getAccount());
                    showDetails(renamedFile);

                } else if (details instanceof PreviewMediaFragment && renamedFile.equals(details.getFile())) {
                    ((PreviewMediaFragment) details).updateFile(renamedFile);
                    if (PreviewMediaFragment.canBePreviewed(renamedFile)) {
                        int position = ((PreviewMediaFragment) details).getPosition();
                        startMediaPreview(renamedFile, position, true);
                    } else {
                        getFileOperationsHelper().openFile(renamedFile);
                    }
                } else if (details instanceof PreviewTextFragment && renamedFile.equals(details.getFile())) {
                    ((PreviewTextFragment) details).updateFile(renamedFile);
                    if (PreviewTextFragment.canBePreviewed(renamedFile)) {
                        startTextPreview(renamedFile);
                    } else {
                        getFileOperationsHelper().openFile(renamedFile);
                    }
                }
            }

            if (getStorageManager().getFileById(renamedFile.getParentId()).equals(getCurrentDir())) {
                refreshListOfFilesFragment();
            }

        } else {
            Toast msg = Toast.makeText(this,
                    ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()), Toast.LENGTH_LONG);
            msg.show();

            if (result.isSslRecoverableException()) {
                mLastSslUntrustedServerResult = result;
                showUntrustedCertDialog(mLastSslUntrustedServerResult);
            }
        }
    }

    private void onSynchronizeFileOperationFinish(SynchronizeFileOperation operation,
            RemoteOperationResult result) {
        if (result.isSuccess()) {
            if (operation.transferWasRequested()) {
                OCFile syncedFile = operation.getLocalFile();
                onTransferStateChanged(syncedFile, true, true);
                invalidateOptionsMenu();
                refreshShowDetails();
            }
        }
    }

    /**
     * Updates the view associated to the activity after the finish of an operation trying create a
     * new folder
     * 
     * @param operation     Creation operation performed.
     * @param result        Result of the creation.
     */
    private void onCreateFolderOperationFinish(CreateFolderOperation operation, RemoteOperationResult result) {
        if (result.isSuccess()) {
            refreshListOfFilesFragment();
        } else {
            try {
                Toast msg = Toast.makeText(FileDisplayActivity.this,
                        ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()),
                        Toast.LENGTH_LONG);
                msg.show();

            } catch (NotFoundException e) {
                Log_OC.e(TAG, "Error while trying to show fail message ", e);
            }
        }
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void onTransferStateChanged(OCFile file, boolean downloading, boolean uploading) {
        refreshListOfFilesFragment();
        FileFragment details = getSecondFragment();
        if (details != null && details instanceof FileDetailFragment && file.equals(details.getFile())) {
            if (downloading || uploading) {
                ((FileDetailFragment) details).updateFileDetails(file, getAccount());
            } else {
                if (!file.fileExists()) {
                    cleanSecondFragment();
                } else {
                    ((FileDetailFragment) details).updateFileDetails(false, true);
                }
            }
        }

    }

    private void requestForDownload() {
        Account account = getAccount();
        //if (!mWaitingToPreview.isDownloading()) {
        if (!mDownloaderBinder.isDownloading(account, mWaitingToPreview)) {
            Intent i = new Intent(this, FileDownloader.class);
            i.putExtra(FileDownloader.EXTRA_ACCOUNT, account);
            i.putExtra(FileDownloader.EXTRA_FILE, mWaitingToPreview);
            startService(i);
        }
    }

    private OCFile getCurrentDir() {
        OCFile file = getFile();
        if (file != null) {
            if (file.isFolder()) {
                return file;
            } else if (getStorageManager() != null) {
                String parentPath = file.getRemotePath().substring(0,
                        file.getRemotePath().lastIndexOf(file.getFileName()));
                return getStorageManager().getFileByPath(parentPath);
            }
        }
        return null;
    }

    /**
     * Starts an operation to refresh the requested folder.
     *
     * The operation is run in a new background thread created on the fly.
     *
     * The refresh updates is a "light sync": properties of regular files in folder are updated (including
     * associated shares), but not their contents. Only the contents of files marked to be kept-in-sync are
     * synchronized too.
     *
     * @param folder        Folder to refresh.
     * @param ignoreETag    If 'true', the data from the server will be fetched and sync'ed even if the eTag
     *                      didn't change.
     */
    public void startSyncFolderOperation(final OCFile folder, final boolean ignoreETag) {

        // the execution is slightly delayed to allow the activity get the window focus if it's being started
        // or if the method is called from a dialog that is being dismissed
        getHandler().postDelayed(new Runnable() {
            @Override
            public void run() {
                if (hasWindowFocus()) {
                    long currentSyncTime = System.currentTimeMillis();
                    mSyncInProgress = true;

                    // perform folder synchronization
                    RemoteOperation synchFolderOp = new RefreshFolderOperation(folder, currentSyncTime, false,
                            getFileOperationsHelper().isSharedSupported(), ignoreETag, getStorageManager(),
                            getAccount(), getApplicationContext());
                    synchFolderOp.execute(getAccount(), MainApp.getAppContext(), FileDisplayActivity.this, null,
                            null);

                    mProgressBar.setIndeterminate(true);

                    setBackgroundText();

                } // else: NOTHING ; lets' not refresh when the user rotates the device but there is
                // another window floating over
            }
        }, DELAY_TO_REQUEST_OPERATIONS_LATER);

    }

    /**
     * Show untrusted cert dialog
     */
    public void showUntrustedCertDialog(RemoteOperationResult result) {
        // Show a dialog with the certificate info
        SslUntrustedCertDialog dialog = SslUntrustedCertDialog
                .newInstanceForFullSslError((CertificateCombinedException) result.getException());
        FragmentManager fm = getSupportFragmentManager();
        FragmentTransaction ft = fm.beginTransaction();
        dialog.show(ft, DIALOG_UNTRUSTED_CERT);
    }

    private void requestForDownload(OCFile file) {
        Account account = getAccount();
        if (!mDownloaderBinder.isDownloading(account, mWaitingToPreview)) {
            Intent i = new Intent(this, FileDownloader.class);
            i.putExtra(FileDownloader.EXTRA_ACCOUNT, account);
            i.putExtra(FileDownloader.EXTRA_FILE, file);
            startService(i);
        }
    }

    private void sendDownloadedFile() {
        getFileOperationsHelper().sendDownloadedFile(mWaitingToSend);
        mWaitingToSend = null;
    }

    /**
     * Requests the download of the received {@link OCFile} , updates the UI
     * to monitor the download progress and prepares the activity to send the file
     * when the download finishes.
     *
     * @param file {@link OCFile} to download and preview.
     */
    public void startDownloadForSending(OCFile file) {
        mWaitingToSend = file;
        requestForDownload(mWaitingToSend);
        boolean hasSecondFragment = (getSecondFragment() != null);
        updateFragmentsVisibility(hasSecondFragment);
    }

    /**
     * Opens the image gallery showing the image {@link OCFile} received as parameter.
     *
     * @param file Image {@link OCFile} to show.
     */
    public void startImagePreview(OCFile file) {
        Intent showDetailsIntent = new Intent(this, PreviewImageActivity.class);
        showDetailsIntent.putExtra(EXTRA_FILE, file);
        showDetailsIntent.putExtra(EXTRA_ACCOUNT, getAccount());
        startActivity(showDetailsIntent);
    }

    /**
     * Stars the preview of an already down media {@link OCFile}.
     *
     * @param file                      Media {@link OCFile} to preview.
     * @param startPlaybackPosition     Media position where the playback will be started,
     *                                  in milliseconds.
     * @param autoplay                  When 'true', the playback will start without user
     *                                  interactions.
     */
    public void startMediaPreview(OCFile file, int startPlaybackPosition, boolean autoplay) {
        Fragment mediaFragment = new PreviewMediaFragment(file, getAccount(), startPlaybackPosition, autoplay);
        setSecondFragment(mediaFragment);
        updateFragmentsVisibility(true);
        updateActionBarTitleAndHomeButton(file);
        setFile(file);
    }

    /**
     * Stars the preview of a text file {@link OCFile}.
     *
     * @param file Text {@link OCFile} to preview.
     */
    public void startTextPreview(OCFile file) {
        Bundle args = new Bundle();
        args.putParcelable(EXTRA_FILE, file);
        args.putParcelable(EXTRA_ACCOUNT, getAccount());
        Fragment textPreviewFragment = Fragment.instantiate(getApplicationContext(),
                PreviewTextFragment.class.getName(), args);
        setSecondFragment(textPreviewFragment);
        updateFragmentsVisibility(true);
        //updateNavigationElementsInActionBar(file);
        setFile(file);
    }

    /**
     * Requests the download of the received {@link OCFile} , updates the UI
     * to monitor the download progress and prepares the activity to preview
     * or open the file when the download finishes.
     *
     * @param file {@link OCFile} to download and preview.
     */
    public void startDownloadForPreview(OCFile file) {
        Fragment detailFragment = FileDetailFragment.newInstance(file, getAccount());
        setSecondFragment(detailFragment);
        mWaitingToPreview = file;
        requestForDownload();
        updateFragmentsVisibility(true);
        updateActionBarTitleAndHomeButton(file);
        setFile(file);
    }

    public void cancelTransference(OCFile file) {
        getFileOperationsHelper().cancelTransference(file);
        if (mWaitingToPreview != null && mWaitingToPreview.getRemotePath().equals(file.getRemotePath())) {
            mWaitingToPreview = null;
        }
        if (mWaitingToSend != null && mWaitingToSend.getRemotePath().equals(file.getRemotePath())) {
            mWaitingToSend = null;
        }
        onTransferStateChanged(file, false, false);
    }

    @Override
    public void onRefresh(boolean ignoreETag) {
        refreshList(ignoreETag);
    }

    @Override
    public void onRefresh() {
        refreshList(true);
    }

    private void refreshList(boolean ignoreETag) {
        OCFileListFragment listOfFiles = getListOfFilesFragment();
        if (listOfFiles != null) {
            OCFile folder = listOfFiles.getCurrentFile();
            if (folder != null) {
                /*mFile = mContainerActivity.getStorageManager().getFileById(mFile.getFileId());
                listDirectory(mFile);*/
                startSyncFolderOperation(folder, ignoreETag);
            }
        }
    }

    private void sortByDate(boolean ascending) {
        getListOfFilesFragment().sortByDate(ascending);
    }

    private void sortBySize(boolean ascending) {
        getListOfFilesFragment().sortBySize(ascending);
    }

    private void sortByName(boolean ascending) {
        getListOfFilesFragment().sortByName(ascending);
    }

    private boolean isGridView() {
        return getListOfFilesFragment().isGridView();
    }

    public void allFilesOption() {
        browseToRoot();
    }
}