/android/import-contacts

To get this branch, use:
bzr branch http://bzr.ed.am/android/import-contacts

« back to all changes in this revision

Viewing changes to src/am/ed/importcontacts/FileChooser.java

  • Committer: Tim Marston
  • Date: 2016-03-28 18:18:11 UTC
  • Revision ID: tim@ed.am-20160328181811-as61lllmvnv8e5os
handle vcards with missing vesion lines (treat as v2.1)

Show diffs side-by-side

added added

removed removed

src/am/ed/importcontacts/FileChooser.java
 
1
/*
 
2
 * FileChooser.java
 
3
 *
 
4
 * Copyright (C) 2010 Tim Marston <tim@ed.am>
 
5
 *
 
6
 * This file is part of the Import Contacts program (hereafter referred
 
7
 * to as "this program").  For more information, see
 
8
 * http://ed.am/dev/android/import-contacts
 
9
 *
 
10
 * This program is free software: you can redistribute it and/or modify
 
11
 * it under the terms of the GNU General Public License as published by
 
12
 * the Free Software Foundation, either version 3 of the License, or
 
13
 * (at your option) any later version.
 
14
 *
 
15
 * This program is distributed in the hope that it will be useful,
 
16
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 
17
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
18
 * GNU General Public License for more details.
 
19
 *
 
20
 * You should have received a copy of the GNU General Public License
 
21
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
22
 */
 
23
 
 
24
package am.ed.importcontacts;
 
25
 
 
26
import java.io.File;
 
27
import java.io.FileFilter;
 
28
import java.io.IOException;
 
29
import java.util.ArrayList;
 
30
import java.util.Collections;
 
31
import java.util.Comparator;
 
32
import java.util.Locale;
 
33
 
 
34
import android.app.AlertDialog;
 
35
import android.app.Dialog;
 
36
import android.content.Context;
 
37
import android.content.DialogInterface;
 
38
import android.os.Environment;
 
39
import android.view.LayoutInflater;
 
40
import android.view.View;
 
41
import android.view.View.OnClickListener;
 
42
import android.view.ViewGroup;
 
43
import android.widget.AdapterView;
 
44
import android.widget.AdapterView.OnItemClickListener;
 
45
import android.widget.ArrayAdapter;
 
46
import android.widget.Button;
 
47
import android.widget.ImageView;
 
48
import android.widget.ListView;
 
49
import android.widget.TextView;
 
50
 
 
51
public class FileChooser
 
52
{
 
53
        // pick an existing directory
 
54
        public final static int MODE_DIR = 1;
 
55
 
 
56
        // pick an existing file
 
57
        public final static int MODE_FILE = 2;
 
58
 
 
59
 
 
60
        private Dialog _dialog;
 
61
 
 
62
        // mode
 
63
        private int _mode = MODE_DIR;
 
64
 
 
65
        // ok was pressed
 
66
        boolean _ok = false;
 
67
 
 
68
        // working path
 
69
        private String _path;
 
70
 
 
71
        // selected filename
 
72
        private String _filename;
 
73
 
 
74
        // enforce extension (in file-mode)
 
75
        private String[] _extensions;
 
76
 
 
77
        // path to secretly prefix all paths with
 
78
        private String _path_prefix = "";
 
79
 
 
80
        private Context _context;
 
81
        private ArrayList< RowItem > _items;
 
82
        private DialogInterface.OnDismissListener _on_dismiss_listener;
 
83
 
 
84
        // class that represents a row in the list
 
85
        private class RowItem implements Comparable< RowItem >
 
86
        {
 
87
                private String _name;
 
88
                private boolean _directory;
 
89
 
 
90
                public RowItem( String name, boolean directory )
 
91
                {
 
92
                        _name = name;
 
93
                        _directory = directory;
 
94
                }
 
95
 
 
96
                public String getName()
 
97
                {
 
98
                        return _name;
 
99
                }
 
100
 
 
101
                public boolean isDirectory()
 
102
                {
 
103
                        return _directory;
 
104
                }
 
105
 
 
106
                @Override
 
107
                public int compareTo( RowItem that )
 
108
                {
 
109
                        if( this._directory && !that._directory )
 
110
                                return -1;
 
111
                        else if( !this._directory && that._directory )
 
112
                                return 1;
 
113
                        else
 
114
                                return this._name.compareToIgnoreCase( that._name );
 
115
                }
 
116
        }
 
117
 
 
118
        // class to manage our list of RowItems
 
119
        private class RowItemAdapter extends ArrayAdapter< RowItem >
 
120
        {
 
121
                private ArrayList< RowItem > _items;
 
122
 
 
123
                public RowItemAdapter( Context context, int textview_resource_id,
 
124
                        ArrayList< RowItem > items )
 
125
                {
 
126
                        super( context, textview_resource_id, items );
 
127
                        _items = items;
 
128
                }
 
129
 
 
130
                @Override
 
131
                public View getView( int position, View convert_view, ViewGroup parent )
 
132
                {
 
133
                        View view = convert_view;
 
134
                        if( view == null ) {
 
135
                                LayoutInflater factory = LayoutInflater.from( _context );
 
136
                                view = factory.inflate(  R.layout.filechooser_row, null );
 
137
                        }
 
138
                        RowItem rowitem = _items.get( position );
 
139
                        if( rowitem != null ) {
 
140
                                ( (TextView)view.findViewById( R.id.name ) )
 
141
                                        .setText( rowitem.getName() );
 
142
                                ( (ImageView)view.findViewById( R.id.icon ) ).setVisibility(
 
143
                                        rowitem.isDirectory()? View.VISIBLE : View.GONE );
 
144
                        }
 
145
                        return view;
 
146
                }
 
147
        }
 
148
 
 
149
        @SuppressWarnings( "serial" )
 
150
        class InvalidPathPrefixException extends RuntimeException
 
151
        {
 
152
        }
 
153
 
 
154
 
 
155
 
 
156
        // constructor
 
157
        public FileChooser( Context context )
 
158
        {
 
159
                _context = context;
 
160
        }
 
161
 
 
162
        public void setMode( int mode )
 
163
        {
 
164
                _mode = mode;
 
165
        }
 
166
 
 
167
        public void setPath( String path )
 
168
        {
 
169
                _path = cleanUpPath( path );
 
170
                File file = new File( _path_prefix + path.trim() );
 
171
 
 
172
                // path and filename
 
173
                if( file.isFile() ) {
 
174
                        _path = _path.substring( 0, _path.length() - 1 );
 
175
                        _filename = _path.substring( _path.lastIndexOf( '/' ) + 1 );
 
176
                        _path = _path.substring( 0, _path.length() - _filename.length() );
 
177
                }
 
178
 
 
179
                // else, treat as just a path
 
180
                else
 
181
                        _filename = "";
 
182
        }
 
183
 
 
184
        public void setExtensions( String[] extensions )
 
185
        {
 
186
                _extensions = extensions;
 
187
        }
 
188
 
 
189
        // set dismiss listener
 
190
        public void setDismissListener(
 
191
                DialogInterface.OnDismissListener on_dismiss_listener )
 
192
        {
 
193
                _on_dismiss_listener = on_dismiss_listener;
 
194
        }
 
195
 
 
196
        // set the path prefix
 
197
        public void setPathPrefix( String path_prefix )
 
198
        {
 
199
                // set to cleaned-up path, with trailing '/' removed so that it can be
 
200
                // trivially pre-pended to a cleaned-up path
 
201
                _path_prefix = cleanUpPath( path_prefix );
 
202
                _path_prefix = _path_prefix.substring( 0, _path_prefix.length() - 1 );
 
203
        }
 
204
 
 
205
        public boolean getOk()
 
206
        {
 
207
                return _ok;
 
208
        }
 
209
 
 
210
        public String getPath()
 
211
        {
 
212
                return _path + _filename;
 
213
        }
 
214
 
 
215
        public Dialog onCreateDialog()
 
216
        {
 
217
                // custom layout in an AlertDialog
 
218
                LayoutInflater factory = LayoutInflater.from( _context );
 
219
                final View dialogView = factory.inflate(
 
220
                        R.layout.filechooser, null );
 
221
 
 
222
                // wire up buttons
 
223
                ( (Button)dialogView.findViewById( R.id.ok ) )
 
224
                        .setOnClickListener( _fileChooserButtonListener );
 
225
                ( (ListView)dialogView.findViewById( R.id.list ) )
 
226
                        .setOnItemClickListener( _fileChooserItemClickListener );
 
227
 
 
228
                // return dialog
 
229
                Dialog dialog = new AlertDialog.Builder( _context )
 
230
                        .setTitle( " " )
 
231
                        .setView( dialogView )
 
232
                        .create();
 
233
                dialog.setOnDismissListener( _on_dismiss_listener );
 
234
                return dialog;
 
235
        }
 
236
 
 
237
        private OnClickListener _fileChooserButtonListener = new OnClickListener() {
 
238
                public void onClick( View view )
 
239
                {
 
240
                        switch( view.getId() )
 
241
                        {
 
242
                        case R.id.ok:
 
243
                                // close dialog and free (don't keep a reference)
 
244
                                _ok = true;
 
245
                                _dialog.dismiss();
 
246
                                break;
 
247
                        }
 
248
                }
 
249
        };
 
250
 
 
251
        private OnItemClickListener _fileChooserItemClickListener =
 
252
                        new OnItemClickListener() {
 
253
                public void onItemClick( AdapterView< ? > adapter_view, View view,
 
254
                        int position, long id )
 
255
                {
 
256
                        RowItem rowitem = _items.get( position );
 
257
 
 
258
                        // handle directory changes
 
259
                        if( rowitem.isDirectory() )
 
260
                        {
 
261
                                String dirname = rowitem.getName();
 
262
                                if( dirname.equals( ".." ) )
 
263
                                        strtipLastFilepartFromPath();
 
264
                                else
 
265
                                        _path += dirname + "/";
 
266
                                _filename = "";
 
267
 
 
268
                                updateList();
 
269
                        }
 
270
 
 
271
                        // handle file selections
 
272
                        else
 
273
                        {
 
274
                                _filename = rowitem.getName();
 
275
                                updateCurrentSelection();
 
276
                        }
 
277
                }
 
278
        };
 
279
 
 
280
        public void onPrepareDialog( Context context, Dialog dialog )
 
281
        {
 
282
                // set up reference to dialog
 
283
                _dialog = dialog;
 
284
                _context = context;
 
285
 
 
286
                // reset "ok"
 
287
                _ok = false;
 
288
 
 
289
                // pick text based on mode
 
290
                int title = 0, current = 0;
 
291
                switch( _mode ) {
 
292
                case MODE_DIR:
 
293
                        title = R.string.filechooser_title_dir;
 
294
                        current = R.string.filechooser_current_dir;
 
295
                        break;
 
296
                case MODE_FILE:
 
297
                        title = R.string.filechooser_title_file;
 
298
                        current = R.string.filechooser_current_file;
 
299
                        break;
 
300
                }
 
301
                dialog.setTitle( title );
 
302
                ( (TextView)dialog.findViewById( R.id.current ) )
 
303
                        .setText( _context.getString(  current ) );
 
304
 
 
305
                // clear filename in directory mode
 
306
                if( _mode == MODE_DIR )
 
307
                        _filename = "";
 
308
 
 
309
                // set root path icon
 
310
                ( (ImageView)_dialog.findViewById( R.id.icon ) )
 
311
                        .setImageResource( pathIcon( cleanUpPath( _path_prefix ) ) );
 
312
 
 
313
                // setup current-path-specific stuff
 
314
                updateList();
 
315
        }
 
316
 
 
317
        public static String cleanUpPath( String path )
 
318
        {
 
319
                path = path.trim();
 
320
 
 
321
                // ensure it starts and ends in a '/'
 
322
                if( !path.startsWith( "/" ) ) path = "/" + path;
 
323
                if( !path.endsWith( "/" ) ) path += "/";
 
324
 
 
325
                return path;
 
326
        }
 
327
 
 
328
        public static int pathIcon( String path )
 
329
        {
 
330
                // get sdcard path
 
331
                String sdcard_path;
 
332
                try {
 
333
                        sdcard_path = Environment.getExternalStorageDirectory()
 
334
                                .getCanonicalPath();
 
335
                        if( sdcard_path.charAt( sdcard_path.length() - 1 ) != '/' )
 
336
                                sdcard_path += "/";
 
337
                }
 
338
                catch( IOException e ) {
 
339
                        sdcard_path = null;
 
340
                }
 
341
 
 
342
                // special paths
 
343
                if( sdcard_path != null && path.equals( sdcard_path ) )
 
344
                        return R.drawable.sdcard;
 
345
 
 
346
                // default
 
347
                return R.drawable.directory;
 
348
        }
 
349
 
 
350
        public String prettyPrint( String full_path, boolean return_full )
 
351
        {
 
352
                String path = full_path;
 
353
 
 
354
                // get sdcard path
 
355
                String sdcard_path;
 
356
                try {
 
357
                        sdcard_path = Environment.getExternalStorageDirectory()
 
358
                                .getCanonicalPath();
 
359
                        if( sdcard_path.charAt( sdcard_path.length() - 1 ) != '/' )
 
360
                                sdcard_path += "/";
 
361
                }
 
362
                catch( IOException e ) {
 
363
                        sdcard_path = null;
 
364
                }
 
365
 
 
366
                // special names
 
367
                if( sdcard_path != null && path.equals( sdcard_path ) )
 
368
                        return " " + _context.getString( R.string.filechooser_path_sdcard );
 
369
 
 
370
                // remove prefix, if present
 
371
                if( path.startsWith( _path_prefix + "/" ) )
 
372
                        path = path.substring( _path_prefix.length() );
 
373
 
 
374
                // unless path is "/", strip trailing "/"
 
375
                if( path.length() > 1 && path.endsWith( "/" ) )
 
376
                        path = path.substring( 0, path.length() - 1 );
 
377
 
 
378
                // if full path not required, strip off preceding directories
 
379
                if( !return_full ) {
 
380
                        int idx = path.lastIndexOf( "/" );
 
381
                        if( idx != -1 ) path = path.substring( idx + 1 );
 
382
                }
 
383
 
 
384
                return path;
 
385
        }
 
386
 
 
387
        protected void strtipLastFilepartFromPath()
 
388
        {
 
389
                int at = _path.lastIndexOf( '/', _path.length() - 2 );
 
390
                if( at != -1 ) _path = _path.substring( 0, at + 1 );
 
391
        }
 
392
 
 
393
        protected void updateList()
 
394
        {
 
395
                // reset item list
 
396
                _items = new ArrayList< RowItem >();
 
397
 
 
398
                // open directory (and ensure _path is a directory)
 
399
                File dir = new File( _path_prefix + _path );
 
400
                while( !dir.isDirectory() ) {
 
401
                        if( _path == "/" )
 
402
                                throw new InvalidPathPrefixException();
 
403
                        strtipLastFilepartFromPath();
 
404
                        dir = new File( _path_prefix + _path );
 
405
                }
 
406
 
 
407
                // add ".."?
 
408
                if( !_path.equals( "/" ) )
 
409
                        _items.add( new RowItem( "..", true ) );
 
410
 
 
411
                // get directories
 
412
                class DirFilter implements FileFilter {
 
413
                        public boolean accept( File file ) {
 
414
                                return file.isDirectory() && file.getName().charAt( 0 ) != '.';
 
415
                        }
 
416
                }
 
417
                File[] files = dir.listFiles( new DirFilter() );
 
418
                if( files != null )
 
419
                        for( int i = 0; i < files.length; i++ )
 
420
                                _items.add( new RowItem( files[ i ].getName(), true ) );
 
421
 
 
422
                // get files
 
423
                if( _mode == MODE_FILE )
 
424
                {
 
425
                        class VCardFilter implements FileFilter {
 
426
                                public boolean accept( File file ) {
 
427
                                        if( file.isDirectory() || file.getName().startsWith( "." ) )
 
428
                                                return false;
 
429
                                        String filename =
 
430
                                                file.getName().toLowerCase( Locale.ENGLISH );
 
431
                                        for( int i = 0; i < _extensions.length; i++ )
 
432
                                                if( filename.endsWith( "." + _extensions[ i ] ) )
 
433
                                                        return true;
 
434
                                        return false;
 
435
                                }
 
436
                        }
 
437
                        files = dir.listFiles( new VCardFilter() );
 
438
                        if( files != null )
 
439
                                for( int i = 0; i < files.length; i++ )
 
440
                                        _items.add( new RowItem( files[ i ].getName(), false ) );
 
441
                }
 
442
 
 
443
                // sort
 
444
                class RowItemSorter implements Comparator< RowItem > {
 
445
                        @Override
 
446
                        public int compare( RowItem lhs, RowItem rhs ) {
 
447
                                return lhs.compareTo( rhs );
 
448
                        }
 
449
                }
 
450
                Collections.sort( _items, new RowItemSorter() );
 
451
 
 
452
                // setup directory list
 
453
                ( (ListView)_dialog.findViewById( R.id.list ) ).setAdapter(
 
454
                        new RowItemAdapter( _context, R.layout.filechooser_row,
 
455
                                _items ) );
 
456
 
 
457
                updateCurrentSelection();
 
458
        }
 
459
 
 
460
        private void updateCurrentSelection()
 
461
        {
 
462
                // set current path
 
463
                ( (TextView)_dialog.findViewById( R.id.path ) ).setText(
 
464
                        prettyPrint( _path_prefix + _path + _filename, true ) );
 
465
 
 
466
                // enable/disable ok button
 
467
                if( _mode == MODE_FILE )
 
468
                        _dialog.findViewById( R.id.ok ).setEnabled( _filename != "" );
 
469
                else
 
470
                        _dialog.findViewById( R.id.ok ).setEnabled( true );
 
471
        }
 
472
 
 
473
}