| 1 | /* |
| 2 | * Jexer - Java Text User Interface |
| 3 | * |
| 4 | * License: LGPLv3 or later |
| 5 | * |
| 6 | * This module is licensed under the GNU Lesser General Public License |
| 7 | * Version 3. Please see the file "COPYING" in this directory for more |
| 8 | * information about the GNU Lesser General Public License Version 3. |
| 9 | * |
| 10 | * Copyright (C) 2015 Kevin Lamonte |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or |
| 13 | * modify it under the terms of the GNU Lesser General Public License |
| 14 | * as published by the Free Software Foundation; either version 3 of |
| 15 | * the License, or (at your option) any later version. |
| 16 | * |
| 17 | * This program is distributed in the hope that it will be useful, but |
| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 20 | * General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU Lesser General Public |
| 23 | * License along with this program; if not, see |
| 24 | * http://www.gnu.org/licenses/, or write to the Free Software |
| 25 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
| 26 | * 02110-1301 USA |
| 27 | * |
| 28 | * @author Kevin Lamonte [kevin.lamonte@gmail.com] |
| 29 | * @version 1 |
| 30 | */ |
| 31 | package jexer; |
| 32 | |
| 33 | import java.io.File; |
| 34 | import java.util.ArrayList; |
| 35 | import java.util.List; |
| 36 | |
| 37 | /** |
| 38 | * TDirectoryList shows the files within a directory. |
| 39 | */ |
| 40 | public final class TDirectoryList extends TList { |
| 41 | |
| 42 | /** |
| 43 | * Files in the directory. |
| 44 | */ |
| 45 | private List<File> files; |
| 46 | |
| 47 | /** |
| 48 | * Root path containing files to display. |
| 49 | */ |
| 50 | private File path; |
| 51 | |
| 52 | /** |
| 53 | * Set the new path to display. |
| 54 | * |
| 55 | * @param path new path to list files for |
| 56 | */ |
| 57 | public void setPath(final String path) { |
| 58 | this.path = new File(path); |
| 59 | |
| 60 | List<String> newStrings = new ArrayList<String>(); |
| 61 | files.clear(); |
| 62 | |
| 63 | // Build a list of files in this directory |
| 64 | File [] newFiles = this.path.listFiles(); |
| 65 | if (newFiles != null) { |
| 66 | for (int i = 0; i < newFiles.length; i++) { |
| 67 | if (newFiles[i].getName().startsWith(".")) { |
| 68 | continue; |
| 69 | } |
| 70 | if (newFiles[i].isDirectory()) { |
| 71 | continue; |
| 72 | } |
| 73 | files.add(newFiles[i]); |
| 74 | newStrings.add(renderFile(files.size() - 1)); |
| 75 | } |
| 76 | } |
| 77 | setList(newStrings); |
| 78 | } |
| 79 | |
| 80 | /** |
| 81 | * Get the path that is being displayed. |
| 82 | * |
| 83 | * @return the path |
| 84 | */ |
| 85 | public File getPath() { |
| 86 | path = files.get(getSelectedIndex()); |
| 87 | return path; |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * Format one of the entries for drawing on the screen. |
| 92 | * |
| 93 | * @param index index into files |
| 94 | * @return the line to draw |
| 95 | */ |
| 96 | private String renderFile(final int index) { |
| 97 | File file = files.get(index); |
| 98 | String name = file.getName(); |
| 99 | if (name.length() > 20) { |
| 100 | name = name.substring(0, 17) + "..."; |
| 101 | } |
| 102 | return String.format("%-20s %5dk", name, (file.length() / 1024)); |
| 103 | } |
| 104 | |
| 105 | /** |
| 106 | * Public constructor. |
| 107 | * |
| 108 | * @param parent parent widget |
| 109 | * @param path directory path, must be a directory |
| 110 | * @param x column relative to parent |
| 111 | * @param y row relative to parent |
| 112 | * @param width width of text area |
| 113 | * @param height height of text area |
| 114 | */ |
| 115 | public TDirectoryList(final TWidget parent, final String path, final int x, |
| 116 | final int y, final int width, final int height) { |
| 117 | |
| 118 | this(parent, path, x, y, width, height, null); |
| 119 | } |
| 120 | |
| 121 | /** |
| 122 | * Public constructor. |
| 123 | * |
| 124 | * @param parent parent widget |
| 125 | * @param path directory path, must be a directory |
| 126 | * @param x column relative to parent |
| 127 | * @param y row relative to parent |
| 128 | * @param width width of text area |
| 129 | * @param height height of text area |
| 130 | * @param action action to perform when an item is selected |
| 131 | */ |
| 132 | public TDirectoryList(final TWidget parent, final String path, final int x, |
| 133 | final int y, final int width, final int height, final TAction action) { |
| 134 | |
| 135 | super(parent, null, x, y, width, height, action); |
| 136 | files = new ArrayList<File>(); |
| 137 | setPath(path); |
| 138 | } |
| 139 | |
| 140 | } |