src/com/owncloud/android/ui/fragment/MoveFileListFragment.java

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2012-2014 ownCloud Inc.
   3  *
   4  *   This program is free software: you can redistribute it and/or modify
   5  *   it under the terms of the GNU General Public License version 2,
   6  *   as published by the Free Software Foundation.
   7  *
   8  *   This program is distributed in the hope that it will be useful,
   9  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  *   GNU General Public License for more details.
  12  *
  13  *   You should have received a copy of the GNU General Public License
  14  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15  *
  16  */
  17
  18 package com.owncloud.android.ui.fragment;
  19
  20 import java.io.File;
  21
  22 import android.app.Activity;
  23 import android.os.Bundle;
  24 import android.view.View;
  25 import android.widget.AdapterView;
  26
  27 import com.owncloud.android.datamodel.FileDataStorageManager;
  28 import com.owncloud.android.datamodel.OCFile;
  29 import com.owncloud.android.ui.activity.MoveActivity;
  30 import com.owncloud.android.ui.adapter.FolderListListAdapter;
  31 import com.owncloud.android.utils.Log_OC;
  32
  33 /**
  34  * A Fragment that shows all the folders in a given path, and allows browsing through them.
  35  *
  36  * TODO refactorize to get rid of direct dependency on MoveActivity
  37  */
  38 public class MoveFileListFragment extends ExtendedListFragment {
  39
  40     private static final String TAG = MoveFileListFragment.class.getSimpleName();
  41
  42     private static final String MY_PACKAGE = MoveFileListFragment.class.getPackage() != null ?
  43             MoveFileListFragment.class.getPackage().getName() : "com.owncloud.android.ui.fragment";
  44     private static final String EXTRA_FILE = MY_PACKAGE + ".extra.FILE";
  45
  46     private FileFragment.ContainerActivity mContainerActivity;
  47
  48     private OCFile mFile = null;
  49     private FolderListListAdapter mAdapter;
  50
  51
  52     /**
  53      * {@inheritDoc}
  54      */
  55     @Override
  56     public void onAttach(Activity activity) {
  57         super.onAttach(activity);
  58         Log_OC.e(TAG, "onAttach");
  59         try {
  60             mContainerActivity = (FileFragment.ContainerActivity) activity;
  61         } catch (ClassCastException e) {
  62             throw new ClassCastException(activity.toString() + " must implement " +
  63                     FileFragment.ContainerActivity.class.getSimpleName());
  64         }
  65     }
  66
  67
  68     @Override
  69     public void onDetach() {
  70         mContainerActivity = null;
  71         super.onDetach();
  72     }
  73
  74     /**
  75      * {@inheritDoc}
  76      */
  77     @Override
  78     public void onActivityCreated(Bundle savedInstanceState) {
  79         super.onActivityCreated(savedInstanceState);
  80         Log_OC.e(TAG, "onActivityCreated() start");
  81
  82         if (savedInstanceState != null) {
  83             mFile = savedInstanceState.getParcelable(EXTRA_FILE);
  84         }
  85
  86         mAdapter = new FolderListListAdapter(getSherlockActivity(), mContainerActivity);
  87         setListAdapter(mAdapter);
  88
  89         registerForContextMenu(getListView());
  90         getListView().setOnCreateContextMenuListener(this);
  91     }
  92
  93
  94     /**
  95      * Saves the current listed folder.
  96      */
  97     @Override
  98     public void onSaveInstanceState (Bundle outState) {
  99         super.onSaveInstanceState(outState);
 100         outState.putParcelable(EXTRA_FILE, mFile);
 101     }
 102
 103     /**
 104      * Call this, when the user presses the up button.
 105      *
 106      * Tries to move up the current folder one level. If the parent folder was removed from the
 107      * database, it continues browsing up until finding an existing folders.
 108      *
 109      * return       Count of folder levels browsed up.
 110      */
 111     public int onBrowseUp() {
 112         OCFile parentDir = null;
 113         int moveCount = 0;
 114
 115         if(mFile != null){
 116             FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
 117
 118             String parentPath = null;
 119             if (mFile.getParentId() != FileDataStorageManager.ROOT_PARENT_ID) {
 120                 parentPath = new File(mFile.getRemotePath()).getParent();
 121                 parentPath = parentPath.endsWith(OCFile.PATH_SEPARATOR) ? parentPath :
 122                     parentPath + OCFile.PATH_SEPARATOR;
 123                 parentDir = storageManager.getFileByPath(parentPath);
 124                 moveCount++;
 125             } else {
 126                 parentDir = storageManager.getFileByPath(OCFile.ROOT_PATH);
 127             }
 128             while (parentDir == null) {
 129                 parentPath = new File(parentPath).getParent();
 130                 parentPath = parentPath.endsWith(OCFile.PATH_SEPARATOR) ? parentPath :
 131                     parentPath + OCFile.PATH_SEPARATOR;
 132                 parentDir = storageManager.getFileByPath(parentPath);
 133                 moveCount++;
 134             }   // exit is granted because storageManager.getFileByPath("/") never returns null
 135             mFile = parentDir;
 136
 137             listDirectory(mFile);
 138
 139             ((MoveActivity)mContainerActivity).startSyncFolderOperation(mFile);
 140
 141             // restore index and top position
 142             restoreIndexAndTopPosition();
 143
 144         }   // else - should never happen now
 145
 146         return moveCount;
 147     }
 148
 149     @Override
 150     public void onItemClick(AdapterView<?> l, View v, int position, long id) {
 151         OCFile file = (OCFile) mAdapter.getItem(position);
 152         if (file != null) {
 153             if (file.isFolder()) {
 154                 // update state and view of this fragment
 155                 listDirectory(file);
 156                 // then, notify parent activity to let it update its state and view
 157                 mContainerActivity.onBrowsedDownTo(file);
 158                 // save index and top position
 159                 saveIndexAndTopPosition(position);
 160
 161             }
 162
 163         } else {
 164             Log_OC.d(TAG, "Null object in ListAdapter!!");
 165         }
 166
 167     }
 168
 169     /**
 170      * Use this to query the {@link OCFile} that is currently
 171      * being displayed by this fragment
 172      * @return The currently viewed OCFile
 173      */
 174     public OCFile getCurrentFile(){
 175         return mFile;
 176     }
 177
 178     /**
 179      * Calls {@link MoveFileListFragment#listDirectory(OCFile)} with a null parameter
 180      */
 181     public void listDirectory(){
 182         listDirectory(null);
 183     }
 184
 185     /**
 186      * Lists the given directory on the view. When the input parameter is null,
 187      * it will either refresh the last known directory. list the root
 188      * if there never was a directory.
 189      *
 190      * @param directory File to be listed
 191      */
 192     public void listDirectory(OCFile directory) {
 193         FileDataStorageManager storageManager = mContainerActivity.getStorageManager();
 194         if (storageManager != null) {
 195
 196             // Check input parameters for null
 197             if(directory == null){
 198                 if(mFile != null){
 199                     directory = mFile;
 200                 } else {
 201                     directory = storageManager.getFileByPath("/");
 202                     if (directory == null) return; // no files, wait for sync
 203                 }
 204             }
 205
 206
 207             // If that's not a directory -> List its parent
 208             if(!directory.isFolder()){
 209                 Log_OC.w(TAG, "You see, that is not a directory -> " + directory.toString());
 210                 directory = storageManager.getFileById(directory.getParentId());
 211             }
 212
 213             mAdapter.swapDirectory(directory, storageManager);
 214             if (mFile == null || !mFile.equals(directory)) {
 215                 mList.setSelectionFromTop(0, 0);
 216             }
 217             mFile = directory;
 218         }
 219     }
 220
 221
 222     @Override
 223     public void onRefresh() {
 224         super.onRefresh();
 225
 226         if (mFile != null) {
 227             // Refresh mFile
 228             mFile = mContainerActivity.getStorageManager().getFileById(mFile.getFileId());
 229
 230             listDirectory(mFile);
 231
 232             ((MoveActivity)mContainerActivity).startSyncFolderOperation(mFile);
 233         }
 234     }
 235 }