/**
 *   ownCloud Android client application
 *
 *   @author Bartek Przybylski
 *   @author masensio
 *   Copyright (C) 2012  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.owncloud.android.ui.activity;

import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Stack;
import java.util.Vector;


import android.accounts.Account;
import android.accounts.AccountManager;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AlertDialog.Builder;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnCancelListener;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.res.Resources.NotFoundException;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.os.Parcelable;
import android.preference.PreferenceManager;
import android.provider.MediaStore;
import android.provider.MediaStore.Audio;
import android.provider.MediaStore.Images;
import android.provider.MediaStore.Video;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.ActionBar;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.SimpleAdapter;
import android.widget.Toast;

import com.owncloud.android.MainApp;
import com.owncloud.android.R;
import com.owncloud.android.authentication.AccountAuthenticator;
import com.owncloud.android.datamodel.OCFile;
import com.owncloud.android.files.services.FileUploader;
import com.owncloud.android.lib.common.utils.Log_OC;
import com.owncloud.android.lib.common.operations.RemoteOperation;
import com.owncloud.android.lib.common.operations.RemoteOperationResult;
import com.owncloud.android.operations.CreateFolderOperation;
import com.owncloud.android.ui.dialog.CreateFolderDialogFragment;
import com.owncloud.android.ui.dialog.LoadingDialog;
import com.owncloud.android.utils.CopyTmpFileAsyncTask;
import com.owncloud.android.utils.DisplayUtils;
import com.owncloud.android.utils.ErrorMessageAdapter;


/**
 * This can be used to upload things to an ownCloud instance.
 */
public class Uploader extends FileActivity
        implements OnItemClickListener, android.view.View.OnClickListener,
        CopyTmpFileAsyncTask.OnCopyTmpFileTaskListener {

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

    private AccountManager mAccountManager;
    private Stack<String> mParents;
    private ArrayList<Parcelable> mStreamsToUpload;
    private boolean mCreateDir;
    private String mUploadPath;
    private OCFile mFile;
    private boolean mAccountSelected;
    private boolean mAccountSelectionShowing;

    private ArrayList<String> mRemoteCacheData;
    private int mNumCacheFile;
    
    private final static int DIALOG_NO_ACCOUNT = 0;
    private final static int DIALOG_WAITING = 1;
    private final static int DIALOG_NO_STREAM = 2;
    private final static int DIALOG_MULTIPLE_ACCOUNT = 3;

    private final static int REQUEST_CODE_SETUP_ACCOUNT = 0;

    private final static String KEY_PARENTS = "PARENTS";
    private final static String KEY_FILE = "FILE";
    private final static String KEY_ACCOUNT_SELECTED = "ACCOUNT_SELECTED";
    private final static String KEY_ACCOUNT_SELECTION_SHOWING = "ACCOUNT_SELECTION_SHOWING";
    private final static String KEY_NUM_CACHE_FILE = "NUM_CACHE_FILE";
    private final static String KEY_REMOTE_CACHE_DATA = "REMOTE_CACHE_DATA";

    private static final String DIALOG_WAIT_COPY_FILE = "DIALOG_WAIT_COPY_FILE";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        prepareStreamsToUpload();

        if (savedInstanceState == null) {
            mParents = new Stack<String>();
            mAccountSelected = false;
            mAccountSelectionShowing = false;
            mNumCacheFile = 0;

            // ArrayList for files with path in private storage
            mRemoteCacheData = new ArrayList<String>();
        } else {
            mParents = (Stack<String>) savedInstanceState.getSerializable(KEY_PARENTS);
            mFile = savedInstanceState.getParcelable(KEY_FILE);
            mAccountSelected = savedInstanceState.getBoolean(KEY_ACCOUNT_SELECTED);
            mAccountSelectionShowing = savedInstanceState.getBoolean(KEY_ACCOUNT_SELECTION_SHOWING);
            mNumCacheFile = savedInstanceState.getInt(KEY_NUM_CACHE_FILE);
            mRemoteCacheData = savedInstanceState.getStringArrayList(KEY_REMOTE_CACHE_DATA);
        }

        super.onCreate(savedInstanceState);

        if (mAccountSelected) {
            setAccount((Account) savedInstanceState.getParcelable(FileActivity.EXTRA_ACCOUNT));
        }
    }

    @Override
    protected void setAccount(Account account, boolean savedAccount) {
        if (somethingToUpload()) {
            mAccountManager = (AccountManager) getSystemService(Context.ACCOUNT_SERVICE);
            Account[] accounts = mAccountManager.getAccountsByType(MainApp.getAccountType());
            if (accounts.length == 0) {
                Log_OC.i(TAG, "No ownCloud account is available");
                showDialog(DIALOG_NO_ACCOUNT);
            } else if (accounts.length > 1 && !mAccountSelected && !mAccountSelectionShowing) {
                Log_OC.i(TAG, "More than one ownCloud is available");
                showDialog(DIALOG_MULTIPLE_ACCOUNT);
                mAccountSelectionShowing = true;
            } else {
                if (!savedAccount) {
                    setAccount(accounts[0]);
                }
            }

        } else {
            showDialog(DIALOG_NO_STREAM);
        }

        super.setAccount(account, savedAccount);
    }

    @Override
    protected void onAccountSet(boolean stateWasRecovered) {
        super.onAccountSet(mAccountWasRestored);
        initTargetFolder();
        populateDirectoryList();
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
         Log_OC.d(TAG, "onSaveInstanceState() start");
        super.onSaveInstanceState(outState);
        outState.putSerializable(KEY_PARENTS, mParents);
        //outState.putParcelable(KEY_ACCOUNT, mAccount);
        outState.putParcelable(KEY_FILE, mFile);
        outState.putBoolean(KEY_ACCOUNT_SELECTED, mAccountSelected);
        outState.putBoolean(KEY_ACCOUNT_SELECTION_SHOWING, mAccountSelectionShowing);
        outState.putInt(KEY_NUM_CACHE_FILE, mNumCacheFile);
        outState.putStringArrayList(KEY_REMOTE_CACHE_DATA, mRemoteCacheData);
        outState.putParcelable(FileActivity.EXTRA_ACCOUNT, getAccount());

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

    @Override
    protected Dialog onCreateDialog(final int id) {
        final AlertDialog.Builder builder = new Builder(this);
        switch (id) {
        case DIALOG_WAITING:
            final ProgressDialog pDialog = new ProgressDialog(this, R.style.ProgressDialogTheme);
            pDialog.setIndeterminate(false);
            pDialog.setCancelable(false);
            pDialog.setMessage(getResources().getString(R.string.uploader_info_uploading));
            pDialog.setOnShowListener(new DialogInterface.OnShowListener() {
                @Override
                public void onShow(DialogInterface dialog) {
                    ProgressBar v = (ProgressBar) pDialog.findViewById(android.R.id.progress);
                    v.getIndeterminateDrawable().setColorFilter(getResources().getColor(R.color.color_accent),
                            android.graphics.PorterDuff.Mode.MULTIPLY);

                }
            });
            return pDialog;
        case DIALOG_NO_ACCOUNT:
            builder.setIcon(android.R.drawable.ic_dialog_alert);
            builder.setTitle(R.string.uploader_wrn_no_account_title);
            builder.setMessage(String.format(
                    getString(R.string.uploader_wrn_no_account_text), getString(R.string.app_name)));
            builder.setCancelable(false);
            builder.setPositiveButton(R.string.uploader_wrn_no_account_setup_btn_text, new OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    if (android.os.Build.VERSION.SDK_INT >
                            android.os.Build.VERSION_CODES.ECLAIR_MR1) {
                        // using string value since in API7 this
                        // constatn is not defined
                        // in API7 < this constatant is defined in
                        // Settings.ADD_ACCOUNT_SETTINGS
                        // and Settings.EXTRA_AUTHORITIES
                        Intent intent = new Intent(android.provider.Settings.ACTION_ADD_ACCOUNT);
                        intent.putExtra("authorities", new String[] { MainApp.getAuthTokenType() });
                        startActivityForResult(intent, REQUEST_CODE_SETUP_ACCOUNT);
                    } else {
                        // since in API7 there is no direct call for
                        // account setup, so we need to
                        // show our own AccountSetupAcricity, get
                        // desired results and setup
                        // everything for ourself
                        Intent intent = new Intent(getBaseContext(), AccountAuthenticator.class);
                        startActivityForResult(intent, REQUEST_CODE_SETUP_ACCOUNT);
                    }
                }
            });
            builder.setNegativeButton(R.string.uploader_wrn_no_account_quit_btn_text, new OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    finish();
                }
            });
            return builder.create();
        case DIALOG_MULTIPLE_ACCOUNT:
            CharSequence ac[] = new CharSequence[
                    mAccountManager.getAccountsByType(MainApp.getAccountType()).length];
            for (int i = 0; i < ac.length; ++i) {
                ac[i] = DisplayUtils.convertIdn(
                        mAccountManager.getAccountsByType(MainApp.getAccountType())[i].name, false);
            }
            builder.setTitle(R.string.common_choose_account);
            builder.setItems(ac, new OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    setAccount(mAccountManager.getAccountsByType(MainApp.getAccountType())[which]);
                    onAccountSet(mAccountWasRestored);
                    dialog.dismiss();
                    mAccountSelected = true;
                    mAccountSelectionShowing = false;
                }
            });
            builder.setCancelable(true);
            builder.setOnCancelListener(new OnCancelListener() {
                @Override
                public void onCancel(DialogInterface dialog) {
                    mAccountSelectionShowing = false;
                    dialog.cancel();
                    finish();
                }
            });
            return builder.create();
        case DIALOG_NO_STREAM:
            builder.setIcon(android.R.drawable.ic_dialog_alert);
            builder.setTitle(R.string.uploader_wrn_no_content_title);
            builder.setMessage(R.string.uploader_wrn_no_content_text);
            builder.setCancelable(false);
            builder.setNegativeButton(R.string.common_cancel, new OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    finish();
                }
            });
            return builder.create();
        default:
            throw new IllegalArgumentException("Unknown dialog id: " + id);
        }
    }

    class a implements OnClickListener {
        String mPath;
        EditText mDirname;

        public a(String path, EditText dirname) {
            mPath = path; 
            mDirname = dirname;
        }

        @Override
        public void onClick(DialogInterface dialog, int which) {
            Uploader.this.mUploadPath = mPath + mDirname.getText().toString();
            Uploader.this.mCreateDir = true;
            uploadFiles();
        }
    }

    @Override
    public void onBackPressed() {

        if (mParents.size() <= 1) {
            super.onBackPressed();
            return;
        } else {
            mParents.pop();
            populateDirectoryList();
        }
    }

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        // click on folder in the list
        Log_OC.d(TAG, "on item click");
        Vector<OCFile> tmpfiles = getStorageManager().getFolderContent(mFile, false);
        if (tmpfiles.size() <= 0) return;
        // filter on dirtype
        Vector<OCFile> files = new Vector<OCFile>();
        for (OCFile f : tmpfiles)
            if (f.isFolder())
                files.add(f);
        if (files.size() < position) {
            throw new IndexOutOfBoundsException("Incorrect item selected");
        }
        mParents.push(files.get(position).getFileName());
        populateDirectoryList();
    }

    @Override
    public void onClick(View v) {
        // click on button
        switch (v.getId()) {
        case R.id.uploader_choose_folder:
            mUploadPath = "";   // first element in mParents is root dir, represented by "";
                                // init mUploadPath with "/" results in a "//" prefix
            for (String p : mParents)
                mUploadPath += p + OCFile.PATH_SEPARATOR;
            Log_OC.d(TAG, "Uploading file to dir " + mUploadPath);

            uploadFiles();

            break;
            
        case R.id.uploader_cancel:
            finish();
            break;
            
            
        default:
            throw new IllegalArgumentException("Wrong element clicked");
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        Log_OC.i(TAG, "result received. req: " + requestCode + " res: " + resultCode);
        if (requestCode == REQUEST_CODE_SETUP_ACCOUNT) {
            dismissDialog(DIALOG_NO_ACCOUNT);
            if (resultCode == RESULT_CANCELED) {
                finish();
            }
            Account[] accounts = mAccountManager.getAccountsByType(MainApp.getAuthTokenType());
            if (accounts.length == 0) {
                showDialog(DIALOG_NO_ACCOUNT);
            } else {
                // there is no need for checking for is there more then one
                // account at this point
                // since account setup can set only one account at time
                setAccount(accounts[0]);
                populateDirectoryList();
            }
        }
    }

    private void populateDirectoryList() {
        setContentView(R.layout.uploader_layout);
        
        ListView mListView = (ListView) findViewById(android.R.id.list);

        String current_dir = mParents.peek();
        if(current_dir.equals("")){
            getSupportActionBar().setTitle(getString(R.string.default_display_name_for_root_folder));
        }
        else{
            getSupportActionBar().setTitle(current_dir);
        }
        boolean notRoot = (mParents.size() > 1);
        ActionBar actionBar = getSupportActionBar();
        actionBar.setDisplayHomeAsUpEnabled(notRoot);
        actionBar.setHomeButtonEnabled(notRoot);

        String full_path = generatePath(mParents);

        Log_OC.d(TAG, "Populating view with content of : " + full_path);

        mFile = getStorageManager().getFileByPath(full_path);
        if (mFile != null) {
            Vector<OCFile> files = getStorageManager().getFolderContent(mFile, false);
            List<HashMap<String, Object>> data = new LinkedList<HashMap<String,Object>>();
            for (OCFile f : files) {
                HashMap<String, Object> h = new HashMap<String, Object>();
                if (f.isFolder()) {
                    h.put("dirname", f.getFileName());
                    data.add(h);
                }
            }
            SimpleAdapter sa = new SimpleAdapter(this,
                                                data,
                                                R.layout.uploader_list_item_layout,
                                                new String[] {"dirname"},
                                                new int[] {R.id.filename});
            
            mListView.setAdapter(sa);
            Button btnChooseFolder = (Button) findViewById(R.id.uploader_choose_folder);
            btnChooseFolder.setOnClickListener(this);
            
            Button btnNewFolder = (Button) findViewById(R.id.uploader_cancel);
            btnNewFolder.setOnClickListener(this);
            
            mListView.setOnItemClickListener(this);
        }
    }

    private String generatePath(Stack<String> dirs) {
        String full_path = "";

        for (String a : dirs)
            full_path += a + "/";
        return full_path;
    }

    private void prepareStreamsToUpload() {
        if (getIntent().getAction().equals(Intent.ACTION_SEND)) {
            mStreamsToUpload = new ArrayList<Parcelable>();
            mStreamsToUpload.add(getIntent().getParcelableExtra(Intent.EXTRA_STREAM));
        } else if (getIntent().getAction().equals(Intent.ACTION_SEND_MULTIPLE)) {
            mStreamsToUpload = getIntent().getParcelableArrayListExtra(Intent.EXTRA_STREAM);
        }
    }

    private boolean somethingToUpload() {
        return (mStreamsToUpload != null && mStreamsToUpload.get(0) != null);
    }

    public void uploadFiles() {
        try {

            // ArrayList for files with path in external storage
            ArrayList<String> local = new ArrayList<String>();
            ArrayList<String> remote = new ArrayList<String>();
            
            // this checks the mimeType 
            for (Parcelable mStream : mStreamsToUpload) {
                
                Uri uri = (Uri) mStream;
                String data = null;
                String filePath = "";

                if (uri != null) {
                    if (uri.getScheme().equals("content")) {
                        String mimeType = getContentResolver().getType(uri);

                        if (mimeType.contains("image")) {
                            String[] CONTENT_PROJECTION = { Images.Media.DATA,
                                    Images.Media.DISPLAY_NAME, Images.Media.MIME_TYPE,
                                    Images.Media.SIZE };
                            Cursor c = getContentResolver().query(uri, CONTENT_PROJECTION, null,
                                    null, null);
                            c.moveToFirst();
                            int index = c.getColumnIndex(Images.Media.DATA);
                            data = c.getString(index);
                            filePath = mUploadPath +
                                    c.getString(c.getColumnIndex(Images.Media.DISPLAY_NAME));

                        } else if (mimeType.contains("video")) {
                            String[] CONTENT_PROJECTION = { Video.Media.DATA,
                                   Video.Media.DISPLAY_NAME, Video.Media.MIME_TYPE,
                                   Video.Media.SIZE, Video.Media.DATE_MODIFIED };
                            Cursor c = getContentResolver().query(uri, CONTENT_PROJECTION, null,
                                   null, null);
                            c.moveToFirst();
                            int index = c.getColumnIndex(Video.Media.DATA);
                            data = c.getString(index);
                            filePath = mUploadPath +
                                   c.getString(c.getColumnIndex(Video.Media.DISPLAY_NAME));
                          
                        } else if (mimeType.contains("audio")) {
                            String[] CONTENT_PROJECTION = { Audio.Media.DATA,
                                   Audio.Media.DISPLAY_NAME, Audio.Media.MIME_TYPE,
                                   Audio.Media.SIZE };
                            Cursor c = getContentResolver().query(uri, CONTENT_PROJECTION, null,
                                   null, null);
                            c.moveToFirst();
                            int index = c.getColumnIndex(Audio.Media.DATA);
                            data = c.getString(index);
                            filePath = mUploadPath +
                                   c.getString(c.getColumnIndex(Audio.Media.DISPLAY_NAME));

                        } else  {
                            Cursor cursor = getContentResolver().query(uri,
                                   new String[]{MediaStore.MediaColumns.DISPLAY_NAME},
                                   null, null, null);
                            cursor.moveToFirst();
                            int nameIndex = cursor.getColumnIndex(cursor.getColumnNames()[0]);
                            if (nameIndex >= 0) {
                               filePath = mUploadPath + cursor.getString(nameIndex);
                            }
                        }

                    } else if (uri.getScheme().equals("file")) {
                        filePath = Uri.decode(uri.toString()).replace(uri.getScheme() +
                                "://", "");
                        if (filePath.contains("mnt")) {
                           String splitedFilePath[] = filePath.split("/mnt");
                           filePath = splitedFilePath[1];
                        }
                        final File file = new File(filePath);
                        data = file.getAbsolutePath();
                        filePath = mUploadPath + file.getName();
                    }
                    else {
                        throw new SecurityException();
                    }
                    if (data == null) {
                        mRemoteCacheData.add(filePath);
                        CopyTmpFileAsyncTask copyTask = new CopyTmpFileAsyncTask(this);
                        Object[] params = { uri, filePath, mRemoteCacheData.size()-1,
                                getAccount().name, getContentResolver()};
                        mNumCacheFile++;
                        showWaitingCopyDialog();
                        copyTask.execute(params);
                    } else {
                        remote.add(filePath);
                        local.add(data);
                    }
                }
                else {
                    throw new SecurityException();
                }

                Intent intent = new Intent(getApplicationContext(), FileUploader.class);
                intent.putExtra(FileUploader.KEY_UPLOAD_TYPE, FileUploader.UPLOAD_MULTIPLE_FILES);
                intent.putExtra(FileUploader.KEY_LOCAL_FILE, local.toArray(new String[local.size()]));
                intent.putExtra(FileUploader.KEY_REMOTE_FILE,
                        remote.toArray(new String[remote.size()]));
                intent.putExtra(FileUploader.KEY_ACCOUNT, getAccount());
                startService(intent);

                //Save the path to shared preferences
                SharedPreferences.Editor appPrefs = PreferenceManager
                        .getDefaultSharedPreferences(getApplicationContext()).edit();
                appPrefs.putString("last_upload_path", mUploadPath);
                appPrefs.apply();

                finish();
            }
            
        } catch (SecurityException e) {
            String message = String.format(getString(R.string.uploader_error_forbidden_content),
                    getString(R.string.app_name));
            Toast.makeText(this, message, Toast.LENGTH_LONG).show();            
        }
    }
    
    @Override
    public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
        super.onRemoteOperationFinish(operation, result);
        
      
        if (operation instanceof CreateFolderOperation) {
            onCreateFolderOperationFinish((CreateFolderOperation)operation, result);
        }
        
    }
    
    /**
     * 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()) {
            dismissLoadingDialog();
            populateDirectoryList();
        } else {
            dismissLoadingDialog();
            try {
                Toast msg = Toast.makeText(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);
            }
        }
    }
    
    
    /**
     *  Loads the target folder initialize shown to the user.
     * 
     *  The target account has to be chosen before this method is called. 
     */
    private void initTargetFolder() {
        if (getStorageManager() == null) {
            throw new IllegalStateException("Do not call this method before " +
                    "initializing mStorageManager");
        }
        
        SharedPreferences appPreferences = PreferenceManager
                .getDefaultSharedPreferences(getApplicationContext());

        String last_path = appPreferences.getString("last_upload_path", "");
        // "/" equals root-directory
        if(last_path.equals("/")) {
            mParents.add("");
        } else{
            String[] dir_names = last_path.split("/");
            mParents.clear();
            for (String dir : dir_names)
                mParents.add(dir);
        }
        //Make sure that path still exists, if it doesn't pop the stack and try the previous path
        while(!getStorageManager().fileExists(generatePath(mParents)) && mParents.size() > 1){
            mParents.pop();
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.main_menu, menu);
        menu.findItem(R.id.action_sort).setVisible(false);
        menu.findItem(R.id.action_sync_account).setVisible(false);
        return true;
    }
    
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        boolean retval = true;
        switch (item.getItemId()) {
            case R.id.action_create_dir:
                CreateFolderDialogFragment dialog = CreateFolderDialogFragment.newInstance(mFile);
                dialog.show(
                        getSupportFragmentManager(),
                        CreateFolderDialogFragment.CREATE_FOLDER_FRAGMENT);
                break;
            case android.R.id.home:
                if((mParents.size() > 1)) {
                    onBackPressed();
                }
                break;

            default:
                retval = super.onOptionsItemSelected(item);
        }
        return retval;
    }


    /**
     * Process the result of CopyTmpFileAsyncTask
     * @param result
     * @param index
     */
    @Override
    public void onTmpFileCopied(String result, int index) {
        if (mNumCacheFile -- == 0) {
            dismissWaitingCopyDialog();
        }
        if (result != null) {
            Intent intent = new Intent(getApplicationContext(), FileUploader.class);
            intent.putExtra(FileUploader.KEY_UPLOAD_TYPE, FileUploader.UPLOAD_SINGLE_FILE);
            intent.putExtra(FileUploader.KEY_LOCAL_FILE, result);
            intent.putExtra(FileUploader.KEY_REMOTE_FILE, mRemoteCacheData.get(index));
            intent.putExtra(FileUploader.KEY_ACCOUNT, getAccount());
            startService(intent);

        } else {
            String message = String.format(getString(R.string.uploader_error_forbidden_content),
                    getString(R.string.app_name));
            Toast.makeText(this, message, Toast.LENGTH_LONG).show();
            Log_OC.d(TAG, message);
        }

    }
/**
     * Show waiting for copy dialog
     */
    public void showWaitingCopyDialog() {
        // Construct dialog
        LoadingDialog loading = new LoadingDialog(
                getResources().getString(R.string.wait_for_tmp_copy_from_private_storage));
        FragmentManager fm = getSupportFragmentManager();
        FragmentTransaction ft = fm.beginTransaction();
        loading.show(ft, DIALOG_WAIT_COPY_FILE);

    }


    /**
     * Dismiss waiting for copy dialog
     */
    public void dismissWaitingCopyDialog(){
        Fragment frag = getSupportFragmentManager().findFragmentByTag(DIALOG_WAIT_COPY_FILE);
        if (frag != null) {
            LoadingDialog loading = (LoadingDialog) frag;
            loading.dismiss();
        }
    }
}