src/com/owncloud/android/ui/activity/UploadFilesActivity.java

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2011  Bartek Przybylski
   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 as published by
   6  *   the Free Software Foundation, either version 3 of the License, or
   7  *   (at your option) any later version.
   8  *
   9  *   This program is distributed in the hope that it will be useful,
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *   GNU General Public License for more details.
  13  *
  14  *   You should have received a copy of the GNU General Public License
  15  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  */
  18
  19 package com.owncloud.android.ui.activity;
  20
  21 import java.io.File;
  22
  23 import android.content.Intent;
  24 import android.os.Bundle;
  25 import android.os.Environment;
  26 import android.util.Log;
  27 import android.view.View;
  28 import android.view.View.OnClickListener;
  29 import android.view.ViewGroup;
  30 import android.widget.ArrayAdapter;
  31 import android.widget.Button;
  32 import android.widget.TextView;
  33
  34 import com.actionbarsherlock.app.ActionBar;
  35 import com.actionbarsherlock.app.ActionBar.OnNavigationListener;
  36 import com.actionbarsherlock.app.SherlockFragmentActivity;
  37 import com.actionbarsherlock.view.MenuItem;
  38 import com.owncloud.android.ui.fragment.LocalFileListFragment;
  39
  40 import com.owncloud.android.R;
  41
  42 /**
  43  * Displays local files and let the user choose what of them wants to upload
  44  * to the current ownCloud account
  45  *
  46  * @author David A. Velasco
  47  *
  48  */
  49
  50 public class UploadFilesActivity extends SherlockFragmentActivity implements
  51     LocalFileListFragment.ContainerActivity, OnNavigationListener, OnClickListener {
  52
  53     private ArrayAdapter<String> mDirectories;
  54     private File mCurrentDir = null;
  55     private LocalFileListFragment mFileListFragment;
  56     private Button mCancelBtn;
  57     private Button mUploadBtn;
  58
  59     public static final String EXTRA_DIRECTORY_PATH = "com.owncloud.android.Directory";
  60     public static final String EXTRA_CHOSEN_FILES = "com.owncloud.android.ChosenFiles";
  61
  62     private static final String TAG = "UploadFilesActivity";
  63
  64
  65     @Override
  66     public void onCreate(Bundle savedInstanceState) {
  67         Log.d(TAG, "onCreate() start");
  68         super.onCreate(savedInstanceState);
  69
  70         if(savedInstanceState != null) {
  71             mCurrentDir = new File(savedInstanceState.getString(UploadFilesActivity.EXTRA_DIRECTORY_PATH));
  72         } else {
  73             mCurrentDir = Environment.getExternalStorageDirectory();
  74         }
  75
  76         /// USER INTERFACE
  77
  78         // Drop-down navigation
  79         mDirectories = new CustomArrayAdapter<String>(this, R.layout.sherlock_spinner_dropdown_item);
  80         File currDir = mCurrentDir;
  81         while(currDir != null && currDir.getParentFile() != null) {
  82             mDirectories.add(currDir.getName());
  83             currDir = currDir.getParentFile();
  84         }
  85         mDirectories.add(File.separator);
  86
  87         // Inflate and set the layout view
  88         setContentView(R.layout.upload_files_layout);
  89         mFileListFragment = (LocalFileListFragment) getSupportFragmentManager().findFragmentById(R.id.local_files_list);
  90
  91
  92         // Set input controllers
  93         mCancelBtn = (Button) findViewById(R.id.upload_files_btn_cancel);
  94         mCancelBtn.setOnClickListener(this);
  95         mUploadBtn = (Button) findViewById(R.id.upload_files_btn_upload);
  96         mUploadBtn.setOnClickListener(this);
  97
  98         // Action bar setup
  99         ActionBar actionBar = getSupportActionBar();
 100         actionBar.setHomeButtonEnabled(true);   // mandatory since Android ICS, according to the official documentation
 101         actionBar.setDisplayHomeAsUpEnabled(mCurrentDir != null && mCurrentDir.getName() != null);
 102         actionBar.setDisplayShowTitleEnabled(false);
 103         actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
 104         actionBar.setListNavigationCallbacks(mDirectories, this);
 105
 106         Log.d(TAG, "onCreate() end");
 107     }
 108
 109
 110     @Override
 111     public boolean onOptionsItemSelected(MenuItem item) {
 112         boolean retval = true;
 113         switch (item.getItemId()) {
 114             case android.R.id.home: {
 115                 if(mCurrentDir != null && mCurrentDir.getParentFile() != null){
 116                     onBackPressed();
 117                 }
 118                 break;
 119             }
 120             default:
 121                 retval = onOptionsItemSelected(item);
 122         }
 123         return retval;
 124     }
 125
 126
 127     @Override
 128     public boolean onNavigationItemSelected(int itemPosition, long itemId) {
 129         int i = itemPosition;
 130         while (i-- != 0) {
 131             onBackPressed();
 132         }
 133         // the next operation triggers a new call to this method, but it's necessary to
 134         // ensure that the name exposed in the action bar is the current directory when the
 135         // user selected it in the navigation list
 136         if (itemPosition != 0)
 137             getSupportActionBar().setSelectedNavigationItem(0);
 138         return true;
 139     }
 140
 141
 142     @Override
 143     public void onBackPressed() {
 144         if (mDirectories.getCount() <= 1) {
 145             finish();
 146             return;
 147         }
 148         popDirname();
 149         mFileListFragment.onNavigateUp();
 150         mCurrentDir = mFileListFragment.getCurrentDirectory();
 151
 152         if(mCurrentDir.getParentFile() == null){
 153             ActionBar actionBar = getSupportActionBar();
 154             actionBar.setDisplayHomeAsUpEnabled(false);
 155         }
 156     }
 157
 158
 159     @Override
 160     protected void onSaveInstanceState(Bundle outState) {
 161         // responsibility of restore is preferred in onCreate() before than in onRestoreInstanceState when there are Fragments involved
 162         Log.d(TAG, "onSaveInstanceState() start");
 163         super.onSaveInstanceState(outState);
 164         outState.putString(UploadFilesActivity.EXTRA_DIRECTORY_PATH, mCurrentDir.getAbsolutePath());
 165         Log.d(TAG, "onSaveInstanceState() end");
 166     }
 167
 168
 169     /**
 170      * Pushes a directory to the drop down list
 171      * @param directory to push
 172      * @throws IllegalArgumentException If the {@link File#isDirectory()} returns false.
 173      */
 174     public void pushDirname(File directory) {
 175         if(!directory.isDirectory()){
 176             throw new IllegalArgumentException("Only directories may be pushed!");
 177         }
 178         mDirectories.insert(directory.getName(), 0);
 179         mCurrentDir = directory;
 180     }
 181
 182     /**
 183      * Pops a directory name from the drop down list
 184      * @return True, unless the stack is empty
 185      */
 186     public boolean popDirname() {
 187         mDirectories.remove(mDirectories.getItem(0));
 188         return !mDirectories.isEmpty();
 189     }
 190
 191
 192     // Custom array adapter to override text colors
 193     private class CustomArrayAdapter<T> extends ArrayAdapter<T> {
 194
 195         public CustomArrayAdapter(UploadFilesActivity ctx, int view) {
 196             super(ctx, view);
 197         }
 198
 199         public View getView(int position, View convertView, ViewGroup parent) {
 200             View v = super.getView(position, convertView, parent);
 201
 202             ((TextView) v).setTextColor(getResources().getColorStateList(
 203                     android.R.color.white));
 204             return v;
 205         }
 206
 207         public View getDropDownView(int position, View convertView,
 208                 ViewGroup parent) {
 209             View v = super.getDropDownView(position, convertView, parent);
 210
 211             ((TextView) v).setTextColor(getResources().getColorStateList(
 212                     android.R.color.white));
 213
 214             return v;
 215         }
 216
 217     }
 218
 219     /**
 220      * {@inheritDoc}
 221      */
 222     @Override
 223     public void onDirectoryClick(File directory) {
 224         pushDirname(directory);
 225         ActionBar actionBar = getSupportActionBar();
 226         actionBar.setDisplayHomeAsUpEnabled(true);
 227     }
 228
 229
 230     /**
 231      * {@inheritDoc}
 232      */
 233     @Override
 234     public void onFileClick(File file) {
 235         // nothing to do
 236     }
 237
 238     /**
 239      * {@inheritDoc}
 240      */
 241     @Override
 242     public File getInitialDirectory() {
 243         return mCurrentDir;
 244     }
 245
 246
 247     /**
 248      * Performs corresponding action when user presses 'Cancel' or 'Upload' button
 249      */
 250     @Override
 251     public void onClick(View v) {
 252         if (v.getId() == R.id.upload_files_btn_cancel) {
 253             setResult(RESULT_CANCELED);
 254             finish();
 255
 256         } else if (v.getId() == R.id.upload_files_btn_upload) {
 257             Intent data = new Intent();
 258             data.putExtra(EXTRA_CHOSEN_FILES, mFileListFragment.getCheckedFilePaths());
 259             setResult(RESULT_OK, data);
 260             finish();
 261         }
 262     }
 263
 264 }