| 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.io.IOException; |
| 35 | |
| 36 | import jexer.bits.GraphicsChars; |
| 37 | import jexer.event.TKeypressEvent; |
| 38 | import static jexer.TKeypress.*; |
| 39 | |
| 40 | /** |
| 41 | * TFileOpenBox is a system-modal dialog for selecting a file to open. Call |
| 42 | * it like: |
| 43 | * |
| 44 | * <p> |
| 45 | * <pre> |
| 46 | * {@code |
| 47 | * filename = application.fileOpenBox("/path/to/file.ext", |
| 48 | * TFileOpenBox.Type.OPEN); |
| 49 | * if (filename != null) { |
| 50 | * ... the user selected a file, go open it ... |
| 51 | * } |
| 52 | * } |
| 53 | * </pre> |
| 54 | * |
| 55 | */ |
| 56 | public final class TFileOpenBox extends TWindow { |
| 57 | |
| 58 | /** |
| 59 | * TFileOpenBox can be called for either Open or Save actions. |
| 60 | */ |
| 61 | public enum Type { |
| 62 | OPEN, |
| 63 | SAVE |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * String to return, or null if the user canceled. |
| 68 | */ |
| 69 | private String filename = null; |
| 70 | |
| 71 | /** |
| 72 | * Get the return string. |
| 73 | * |
| 74 | * @return the filename the user selected, or null if they canceled. |
| 75 | */ |
| 76 | public String getFilename() { |
| 77 | return filename; |
| 78 | } |
| 79 | |
| 80 | /** |
| 81 | * The left-side tree view pane. |
| 82 | */ |
| 83 | private TTreeView treeView; |
| 84 | |
| 85 | /** |
| 86 | * The data behind treeView. |
| 87 | */ |
| 88 | private TDirectoryTreeItem treeViewRoot; |
| 89 | |
| 90 | /** |
| 91 | * The right-side directory list pane. |
| 92 | */ |
| 93 | private TDirectoryList directoryList; |
| 94 | |
| 95 | /** |
| 96 | * The top row text field. |
| 97 | */ |
| 98 | private TField entryField; |
| 99 | |
| 100 | /** |
| 101 | * The Open or Save button. |
| 102 | */ |
| 103 | private TButton openButton; |
| 104 | |
| 105 | /** |
| 106 | * See if there is a valid filename to return. If the filename is a |
| 107 | * directory, then |
| 108 | * |
| 109 | * @param newFilename the filename to check and return |
| 110 | */ |
| 111 | private void checkFilename(final String newFilename) throws IOException { |
| 112 | File newFile = new File(newFilename); |
| 113 | if (newFile.exists()) { |
| 114 | if (newFile.isFile()) { |
| 115 | filename = newFilename; |
| 116 | getApplication().closeWindow(this); |
| 117 | return; |
| 118 | } |
| 119 | if (newFile.isDirectory()) { |
| 120 | treeViewRoot = new TDirectoryTreeItem(treeView, newFilename, |
| 121 | true); |
| 122 | treeView.setTreeRoot(treeViewRoot, true); |
| 123 | treeView.reflow(); |
| 124 | openButton.setEnabled(false); |
| 125 | directoryList.setPath(newFilename); |
| 126 | } |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * Public constructor. The file open box will be centered on screen. |
| 132 | * |
| 133 | * @param application the TApplication that manages this window |
| 134 | * @param path path of selected file |
| 135 | * @param type one of the Type constants |
| 136 | */ |
| 137 | public TFileOpenBox(final TApplication application, final String path, |
| 138 | final Type type) throws IOException { |
| 139 | |
| 140 | // Register with the TApplication |
| 141 | super(application, "", 0, 0, 76, 22, MODAL); |
| 142 | |
| 143 | // Add text field |
| 144 | entryField = addField(1, 1, getWidth() - 4, false, |
| 145 | (new File(path)).getCanonicalPath(), |
| 146 | new TAction() { |
| 147 | public void DO() { |
| 148 | try { |
| 149 | checkFilename(entryField.getText()); |
| 150 | } catch (IOException e) { |
| 151 | e.printStackTrace(); |
| 152 | } |
| 153 | } |
| 154 | }, null); |
| 155 | entryField.onKeypress(new TKeypressEvent(kbEnd)); |
| 156 | |
| 157 | // Add directory treeView |
| 158 | treeView = addTreeView(1, 3, 30, getHeight() - 6, |
| 159 | new TAction() { |
| 160 | public void DO() { |
| 161 | TTreeItem item = treeView.getSelected(); |
| 162 | File selectedDir = ((TDirectoryTreeItem) item).getFile(); |
| 163 | try { |
| 164 | directoryList.setPath(selectedDir.getCanonicalPath()); |
| 165 | openButton.setEnabled(false); |
| 166 | activate(directoryList); |
| 167 | } catch (IOException e) { |
| 168 | e.printStackTrace(); |
| 169 | } |
| 170 | } |
| 171 | } |
| 172 | ); |
| 173 | treeViewRoot = new TDirectoryTreeItem(treeView, path, true); |
| 174 | |
| 175 | // Add directory files list |
| 176 | directoryList = addDirectoryList(path, 34, 3, 28, getHeight() - 6, |
| 177 | new TAction() { |
| 178 | public void DO() { |
| 179 | try { |
| 180 | File newPath = directoryList.getPath(); |
| 181 | entryField.setText(newPath.getCanonicalPath()); |
| 182 | entryField.onKeypress(new TKeypressEvent(kbEnd)); |
| 183 | openButton.setEnabled(true); |
| 184 | activate(entryField); |
| 185 | } catch (IOException e) { |
| 186 | e.printStackTrace(); |
| 187 | } |
| 188 | } |
| 189 | } |
| 190 | ); |
| 191 | |
| 192 | String openLabel = ""; |
| 193 | switch (type) { |
| 194 | case OPEN: |
| 195 | openLabel = " &Open "; |
| 196 | setTitle("Open File..."); |
| 197 | break; |
| 198 | case SAVE: |
| 199 | openLabel = " &Save "; |
| 200 | setTitle("Save File..."); |
| 201 | break; |
| 202 | default: |
| 203 | throw new IllegalArgumentException("Invalid type: " + type); |
| 204 | } |
| 205 | |
| 206 | // Setup button actions |
| 207 | openButton = addButton(openLabel, this.getWidth() - 12, 3, |
| 208 | new TAction() { |
| 209 | public void DO() { |
| 210 | try { |
| 211 | checkFilename(entryField.getText()); |
| 212 | } catch (IOException e) { |
| 213 | e.printStackTrace(); |
| 214 | } |
| 215 | } |
| 216 | } |
| 217 | ); |
| 218 | openButton.setEnabled(false); |
| 219 | |
| 220 | addButton("&Cancel", getWidth() - 12, 5, |
| 221 | new TAction() { |
| 222 | public void DO() { |
| 223 | filename = null; |
| 224 | getApplication().closeWindow(TFileOpenBox.this); |
| 225 | } |
| 226 | } |
| 227 | ); |
| 228 | |
| 229 | // Default to the directory list |
| 230 | activate(directoryList); |
| 231 | |
| 232 | // Set the secondaryFiber to run me |
| 233 | getApplication().enableSecondaryEventReceiver(this); |
| 234 | |
| 235 | // Yield to the secondary thread. When I come back from the |
| 236 | // constructor response will already be set. |
| 237 | getApplication().yield(); |
| 238 | } |
| 239 | |
| 240 | /** |
| 241 | * Draw me on screen. |
| 242 | */ |
| 243 | @Override |
| 244 | public void draw() { |
| 245 | super.draw(); |
| 246 | getScreen().vLineXY(33, 4, getHeight() - 6, GraphicsChars.WINDOW_SIDE, |
| 247 | getBackground()); |
| 248 | } |
| 249 | |
| 250 | /** |
| 251 | * Handle keystrokes. |
| 252 | * |
| 253 | * @param keypress keystroke event |
| 254 | */ |
| 255 | @Override |
| 256 | public void onKeypress(final TKeypressEvent keypress) { |
| 257 | // Escape - behave like cancel |
| 258 | if (keypress.equals(kbEsc)) { |
| 259 | // Close window |
| 260 | filename = null; |
| 261 | getApplication().closeWindow(this); |
| 262 | return; |
| 263 | } |
| 264 | |
| 265 | // Pass to my parent |
| 266 | super.onKeypress(keypress); |
| 267 | } |
| 268 | |
| 269 | } |