src/com/owncloud/android/files/FileMenuFilter.java

   1 /**
   2  *   ownCloud Android client application
   3  *
   4  *   @author David A. Velasco
   5  *   Copyright (C) 2015 ownCloud Inc.
   6  *
   7  *   This program is free software: you can redistribute it and/or modify
   8  *   it under the terms of the GNU General Public License version 2,
   9  *   as published by the Free Software Foundation.
  10  *
  11  *   This program is distributed in the hope that it will be useful,
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *   GNU General Public License for more details.
  15  *
  16  *   You should have received a copy of the GNU General Public License
  17  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  *
  19  */
  20
  21 package com.owncloud.android.files;
  22
  23 import java.util.ArrayList;
  24 import java.util.List;
  25
  26 import android.accounts.Account;
  27 import android.content.Context;
  28 import android.view.Menu;
  29 import android.view.MenuItem;
  30
  31 import com.owncloud.android.R;
  32 import com.owncloud.android.datamodel.OCFile;
  33 import com.owncloud.android.files.services.FileDownloader;
  34 import com.owncloud.android.files.services.FileDownloader.FileDownloaderBinder;
  35 import com.owncloud.android.files.services.FileUploader;
  36 import com.owncloud.android.files.services.FileUploader.FileUploaderBinder;
  37 import com.owncloud.android.services.OperationsService;
  38 import com.owncloud.android.services.OperationsService.OperationsServiceBinder;
  39 import com.owncloud.android.ui.activity.ComponentsGetter;
  40
  41 /**
  42  * Filters out the file actions available in a given {@link Menu} for a given {@link OCFile}
  43  * according to the current state of the latest.
  44  */
  45 public class FileMenuFilter {
  46
  47     private OCFile mFile;
  48     private ComponentsGetter mComponentsGetter;
  49     private Account mAccount;
  50     private Context mContext;
  51
  52     /**
  53      * Constructor
  54      *
  55      * @param targetFile        {@link OCFile} target of the action to filter in the {@link Menu}.
  56      * @param account           ownCloud {@link Account} holding targetFile.
  57      * @param cg                Accessor to app components, needed to access the
  58      *                          {@link FileUploader} and {@link FileDownloader} services
  59      * @param context           Android {@link Context}, needed to access build setup resources.
  60      */
  61     public FileMenuFilter(OCFile targetFile, Account account, ComponentsGetter cg, Context context) {
  62         mFile = targetFile;
  63         mAccount = account;
  64         mComponentsGetter = cg;
  65         mContext = context;
  66     }
  67
  68
  69     /**
  70      * Filters out the file actions available in the passed {@link Menu} taken into account
  71      * the state of the {@link OCFile} held by the filter.
  72      *
  73      * @param menu              Options or context menu to filter.
  74      */
  75     public void filter(Menu menu) {
  76         List<Integer> toShow = new ArrayList<Integer>();
  77         List<Integer> toHide = new ArrayList<Integer>();
  78
  79         filter(toShow, toHide);
  80
  81         MenuItem item = null;
  82         for (int i : toShow) {
  83             item = menu.findItem(i);
  84             if (item != null) {
  85                 item.setVisible(true);
  86                 item.setEnabled(true);
  87             }
  88         }
  89
  90         for (int i : toHide) {
  91             item = menu.findItem(i);
  92             if (item != null) {
  93                 item.setVisible(false);
  94                 item.setEnabled(false);
  95             }
  96         }
  97     }
  98
  99     /**
 100      * Filters out the file actions available in the passed {@link Menu} taken into account
 101      * the state of the {@link OCFile} held by the filter.
 102      *
 103      * Second method needed thanks to ActionBarSherlock.
 104      *
 105      * TODO Get rid of it when ActionBarSherlock is replaced for newer Android Support Library.
 106      *
 107      * @param menu              Options or context menu to filter.
 108      */
 109     public void filter(com.actionbarsherlock.view.Menu menu) {
 110
 111         List<Integer> toShow = new ArrayList<Integer>();
 112         List<Integer> toHide = new ArrayList<Integer>();
 113
 114         filter(toShow, toHide);
 115
 116         com.actionbarsherlock.view.MenuItem item = null;
 117         for (int i : toShow) {
 118             item = menu.findItem(i);
 119             if (item != null) {
 120                 item.setVisible(true);
 121                 item.setEnabled(true);
 122             }
 123         }
 124         for (int i : toHide) {
 125             item = menu.findItem(i);
 126             if (item != null) {
 127                 item.setVisible(false);
 128                 item.setEnabled(false);
 129             }
 130         }
 131     }
 132
 133     /**
 134      * Performs the real filtering, to be applied in the {@link Menu} by the caller methods.
 135      *
 136      * Decides what actions must be shown and hidden.
 137      *
 138      * @param toShow            List to save the options that must be shown in the menu.
 139      * @param toHide            List to save the options that must be shown in the menu.
 140      */
 141     private void filter(List<Integer> toShow, List <Integer> toHide) {
 142         boolean downloading = false;
 143         boolean uploading = false;
 144         if (mComponentsGetter != null && mFile != null && mAccount != null) {
 145             FileDownloaderBinder downloaderBinder = mComponentsGetter.getFileDownloaderBinder();
 146             downloading = (downloaderBinder != null && downloaderBinder.isDownloading(mAccount, mFile));
 147             OperationsServiceBinder opsBinder = mComponentsGetter.getOperationsServiceBinder();
 148             downloading |= (opsBinder != null && opsBinder.isSynchronizing(mAccount, mFile.getRemotePath()));
 149             FileUploaderBinder uploaderBinder = mComponentsGetter.getFileUploaderBinder();
 150             uploading = (uploaderBinder != null && uploaderBinder.isUploading(mAccount, mFile));
 151         }
 152
 153         /// decision is taken for each possible action on a file in the menu
 154
 155         // DOWNLOAD
 156         if (mFile == null || mFile.isDown() || downloading || uploading) {
 157             toHide.add(R.id.action_download_file);
 158
 159         } else {
 160             toShow.add(R.id.action_download_file);
 161         }
 162
 163         // RENAME
 164         if (mFile == null || downloading || uploading) {
 165             toHide.add(R.id.action_rename_file);
 166
 167         } else {
 168             toShow.add(R.id.action_rename_file);
 169         }
 170
 171         // MOVE
 172         if (mFile == null || downloading || uploading) {
 173             toHide.add(R.id.action_move);
 174
 175         } else {
 176             toShow.add(R.id.action_move);
 177         }
 178
 179         // REMOVE
 180         if (mFile == null || downloading || uploading) {
 181             toHide.add(R.id.action_remove_file);
 182
 183         } else {
 184             toShow.add(R.id.action_remove_file);
 185         }
 186
 187         // OPEN WITH (different to preview!)
 188         if (mFile == null || mFile.isFolder() || !mFile.isDown() || downloading || uploading) {
 189             toHide.add(R.id.action_open_file_with);
 190
 191         } else {
 192             toShow.add(R.id.action_open_file_with);
 193         }
 194
 195
 196         // CANCEL DOWNLOAD
 197         if (mFile == null || !downloading) {
 198             toHide.add(R.id.action_cancel_download);
 199         } else {
 200             toShow.add(R.id.action_cancel_download);
 201         }
 202
 203         // CANCEL UPLOAD
 204         if (mFile == null || !uploading || mFile.isFolder()) {
 205             toHide.add(R.id.action_cancel_upload);
 206         } else {
 207             toShow.add(R.id.action_cancel_upload);
 208         }
 209
 210         // SYNC FILE CONTENTS
 211         if (mFile == null || mFile.isFolder() || !mFile.isDown() || downloading || uploading) {
 212             toHide.add(R.id.action_sync_file);
 213         } else {
 214             toShow.add(R.id.action_sync_file);
 215         }
 216
 217         // SHARE FILE
 218         // TODO add check on SHARE available on server side?
 219         boolean shareAllowed = (mContext != null  &&
 220                 mContext.getString(R.string.share_link).equalsIgnoreCase("on"));
 221         if (!shareAllowed || mFile == null) {
 222             toHide.add(R.id.action_share_file);
 223         } else {
 224             toShow.add(R.id.action_share_file);
 225         }
 226
 227         // UNSHARE FILE
 228         // TODO add check on SHARE available on server side?
 229         if ( !shareAllowed || (mFile == null || !mFile.isShareByLink())) {
 230             toHide.add(R.id.action_unshare_file);
 231         } else {
 232             toShow.add(R.id.action_unshare_file);
 233         }
 234
 235         // SEE DETAILS
 236         if (mFile == null || mFile.isFolder()) {
 237             toHide.add(R.id.action_see_details);
 238         } else {
 239             toShow.add(R.id.action_see_details);
 240         }
 241
 242         // SEND
 243         boolean sendAllowed = (mContext != null &&
 244                 mContext.getString(R.string.send_files_to_other_apps).equalsIgnoreCase("on"));
 245         if (mFile == null || !sendAllowed || mFile.isFolder() || uploading || downloading) {
 246             toHide.add(R.id.action_send_file);
 247         } else {
 248             toShow.add(R.id.action_send_file);
 249         }
 250
 251     }
 252
 253 }