1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
package org.libreoffice.storage.external;
import android.app.Activity;
import android.app.Fragment;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.support.annotation.Nullable;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import org.libreoffice.R;
import org.libreoffice.storage.IOUtils;
import java.io.File;
import java.util.ArrayList;
import java.util.Comparator;
/**
* A simple directory browser.
*/
public class DirectoryBrowserFragment extends Fragment {
private static final String LOGTAG = DirectoryBrowserFragment.class.getSimpleName();
private static final String INITIAL_PATH_URI_KEY = "initial_path";
private File currentDirectory;
private FileArrayAdapter directoryAdapter;
public static DirectoryBrowserFragment newInstance(String initialPathURI) {
Bundle args = new Bundle();
args.putString(INITIAL_PATH_URI_KEY, initialPathURI);
DirectoryBrowserFragment fragment = new DirectoryBrowserFragment();
fragment.setArguments(args);
Log.d(LOGTAG, "Saved path: " + initialPathURI);
return fragment;
}
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
String initialPathURI = getArguments().getString(INITIAL_PATH_URI_KEY);
setupCurrentDirectory(initialPathURI);
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_directory_browser, container, false);
final EditText directoryHeader = v.findViewById(R.id.directory_header);
Button directorySearchButton = v.findViewById(R.id.directory_search_button);
Button positiveButton = v.findViewById(R.id.confirm_button);
Button negativeButton = v.findViewById(R.id.cancel_button);
ImageView upImage = v.findViewById(R.id.up_image);
ListView directoryListView = v.findViewById(R.id.directory_list);
directoryHeader.setText(currentDirectory.getPath());
directorySearchButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String currentPath = currentDirectory.getAbsolutePath();
String enteredPath = directoryHeader.getText().toString();
File testDirectory = new File(enteredPath);
if(enteredPath.equals(currentPath)) ;
else if (isInvalidFileDirectory(testDirectory)) {
Toast.makeText(getActivity(), R.string.bad_directory, Toast.LENGTH_SHORT)
.show();
}
else {
changeDirectory(testDirectory);
}
}
});
positiveButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent data = new Intent();
data.setData(Uri.fromFile(currentDirectory));
getActivity().setResult(Activity.RESULT_OK, data);
getActivity().finish();
}
});
negativeButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
getActivity().setResult(Activity.RESULT_CANCELED, null);
getActivity().finish();
}
});
upImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
changeDirectory(currentDirectory.getParentFile());
}
});
directoryAdapter = new FileArrayAdapter(getActivity(), new ArrayList<File>());
directoryAdapter.populateFileList(currentDirectory);
directoryListView.setAdapter(directoryAdapter);
directoryListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
changeDirectory(directoryAdapter.getItem(position));
}
});
return v;
}
private void changeDirectory(File destination) {
if(destination == null) {
Toast.makeText(getActivity(), R.string.unable_to_go_further, Toast.LENGTH_SHORT)
.show();
} else {
Fragment fragment = DirectoryBrowserFragment.newInstance(destination.toURI().toString());
getActivity().getFragmentManager().beginTransaction()
.replace(R.id.fragment_container, fragment)
.addToBackStack(null)
.commit();
}
}
private void setupCurrentDirectory(String initialPathURI) {
File initialDirectory = null;
if(initialPathURI != null && !initialPathURI.isEmpty()) {
initialDirectory = IOUtils.getFileFromURIString(initialPathURI);
}
if(isInvalidFileDirectory(initialDirectory)) {
initialDirectory = Environment.getExternalStorageDirectory();
}
currentDirectory = initialDirectory;
}
private boolean isInvalidFileDirectory(File f) {
return f == null || !f.exists() || !f.isDirectory() ||!f.canRead();
}
private class FileArrayAdapter extends ArrayAdapter<File> {
private Comparator<File> caseInsensitiveNaturalOrderComparator;
public FileArrayAdapter(Context context, ArrayList<File> files) {
super(context, 0, files);
caseInsensitiveNaturalOrderComparator = new AlphabeticalFileComparator();
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = getActivity().getLayoutInflater()
.inflate(android.R.layout.simple_list_item_1, null);
}
File f = this.getItem(position);
TextView tv = convertView.findViewById(android.R.id.text1);
tv.setText(f.getName());
return convertView;
}
public void sortAlphabetically() {
this.sort(caseInsensitiveNaturalOrderComparator);
}
public void populateFileList(File directory) {
for(File f : directory.listFiles()){
if(f.isDirectory()){
directoryAdapter.add(f);
}
}
directoryAdapter.sortAlphabetically();
}
}
private class AlphabeticalFileComparator implements Comparator<File> {
@Override
public int compare(File lhs, File rhs) {
String lhsName = lhs.getName();
String rhsName = rhs.getName();
return lhsName.compareToIgnoreCase(rhsName);
}
}
}
|
