| 1 | /* |
| 2 | * Jexer - Java Text User Interface |
| 3 | * |
| 4 | * The MIT License (MIT) |
| 5 | * |
| 6 | * Copyright (C) 2016 Kevin Lamonte |
| 7 | * |
| 8 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 9 | * copy of this software and associated documentation files (the "Software"), |
| 10 | * to deal in the Software without restriction, including without limitation |
| 11 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 12 | * and/or sell copies of the Software, and to permit persons to whom the |
| 13 | * Software is furnished to do so, subject to the following conditions: |
| 14 | * |
| 15 | * The above copyright notice and this permission notice shall be included in |
| 16 | * all copies or substantial portions of the Software. |
| 17 | * |
| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 20 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 21 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 22 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 23 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| 24 | * DEALINGS IN THE SOFTWARE. |
| 25 | * |
| 26 | * @author Kevin Lamonte [kevin.lamonte@gmail.com] |
| 27 | * @version 1 |
| 28 | */ |
| 29 | package jexer; |
| 30 | |
| 31 | import java.io.File; |
| 32 | import java.io.IOException; |
| 33 | |
| 34 | import jexer.bits.GraphicsChars; |
| 35 | import jexer.event.TKeypressEvent; |
| 36 | import static jexer.TKeypress.*; |
| 37 | |
| 38 | /** |
| 39 | * TFileOpenBox is a system-modal dialog for selecting a file to open. Call |
| 40 | * it like: |
| 41 | * |
| 42 | * <p> |
| 43 | * <pre> |
| 44 | * {@code |
| 45 | * filename = application.fileOpenBox("/path/to/file.ext", |
| 46 | * TFileOpenBox.Type.OPEN); |
| 47 | * if (filename != null) { |
| 48 | * ... the user selected a file, go open it ... |
| 49 | * } |
| 50 | * } |
| 51 | * </pre> |
| 52 | * |
| 53 | */ |
| 54 | public final class TFileOpenBox extends TWindow { |
| 55 | |
| 56 | /** |
| 57 | * TFileOpenBox can be called for either Open or Save actions. |
| 58 | */ |
| 59 | public enum Type { |
| 60 | /** |
| 61 | * Button will be labeled "Open". |
| 62 | */ |
| 63 | OPEN, |
| 64 | |
| 65 | /** |
| 66 | * Button will be labeled "Save". |
| 67 | */ |
| 68 | SAVE |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * String to return, or null if the user canceled. |
| 73 | */ |
| 74 | private String filename = null; |
| 75 | |
| 76 | /** |
| 77 | * Get the return string. |
| 78 | * |
| 79 | * @return the filename the user selected, or null if they canceled. |
| 80 | */ |
| 81 | public String getFilename() { |
| 82 | return filename; |
| 83 | } |
| 84 | |
| 85 | /** |
| 86 | * The left-side tree view pane. |
| 87 | */ |
| 88 | private TTreeView treeView; |
| 89 | |
| 90 | /** |
| 91 | * The data behind treeView. |
| 92 | */ |
| 93 | private TDirectoryTreeItem treeViewRoot; |
| 94 | |
| 95 | /** |
| 96 | * The right-side directory list pane. |
| 97 | */ |
| 98 | private TDirectoryList directoryList; |
| 99 | |
| 100 | /** |
| 101 | * The top row text field. |
| 102 | */ |
| 103 | private TField entryField; |
| 104 | |
| 105 | /** |
| 106 | * The Open or Save button. |
| 107 | */ |
| 108 | private TButton openButton; |
| 109 | |
| 110 | /** |
| 111 | * See if there is a valid filename to return. If the filename is a |
| 112 | * directory, then |
| 113 | * |
| 114 | * @param newFilename the filename to check and return |
| 115 | * @throws IOException of a java.io operation throws |
| 116 | */ |
| 117 | private void checkFilename(final String newFilename) throws IOException { |
| 118 | File newFile = new File(newFilename); |
| 119 | if (newFile.exists()) { |
| 120 | if (newFile.isFile()) { |
| 121 | filename = newFilename; |
| 122 | getApplication().closeWindow(this); |
| 123 | return; |
| 124 | } |
| 125 | if (newFile.isDirectory()) { |
| 126 | treeViewRoot = new TDirectoryTreeItem(treeView, newFilename, |
| 127 | true); |
| 128 | treeView.setTreeRoot(treeViewRoot, true); |
| 129 | treeView.reflow(); |
| 130 | openButton.setEnabled(false); |
| 131 | directoryList.setPath(newFilename); |
| 132 | } |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | /** |
| 137 | * Public constructor. The file open box will be centered on screen. |
| 138 | * |
| 139 | * @param application the TApplication that manages this window |
| 140 | * @param path path of selected file |
| 141 | * @param type one of the Type constants |
| 142 | * @throws IOException of a java.io operation throws |
| 143 | */ |
| 144 | public TFileOpenBox(final TApplication application, final String path, |
| 145 | final Type type) throws IOException { |
| 146 | |
| 147 | // Register with the TApplication |
| 148 | super(application, "", 0, 0, 76, 22, MODAL); |
| 149 | |
| 150 | // Add text field |
| 151 | entryField = addField(1, 1, getWidth() - 4, false, |
| 152 | (new File(path)).getCanonicalPath(), |
| 153 | new TAction() { |
| 154 | public void DO() { |
| 155 | try { |
| 156 | checkFilename(entryField.getText()); |
| 157 | } catch (IOException e) { |
| 158 | e.printStackTrace(); |
| 159 | } |
| 160 | } |
| 161 | }, null); |
| 162 | entryField.onKeypress(new TKeypressEvent(kbEnd)); |
| 163 | |
| 164 | // Add directory treeView |
| 165 | treeView = addTreeView(1, 3, 30, getHeight() - 6, |
| 166 | new TAction() { |
| 167 | public void DO() { |
| 168 | TTreeItem item = treeView.getSelected(); |
| 169 | File selectedDir = ((TDirectoryTreeItem) item).getFile(); |
| 170 | try { |
| 171 | directoryList.setPath(selectedDir.getCanonicalPath()); |
| 172 | openButton.setEnabled(false); |
| 173 | activate(directoryList); |
| 174 | } catch (IOException e) { |
| 175 | e.printStackTrace(); |
| 176 | } |
| 177 | } |
| 178 | } |
| 179 | ); |
| 180 | treeViewRoot = new TDirectoryTreeItem(treeView, path, true); |
| 181 | |
| 182 | // Add directory files list |
| 183 | directoryList = addDirectoryList(path, 34, 3, 28, getHeight() - 6, |
| 184 | new TAction() { |
| 185 | public void DO() { |
| 186 | try { |
| 187 | File newPath = directoryList.getPath(); |
| 188 | entryField.setText(newPath.getCanonicalPath()); |
| 189 | entryField.onKeypress(new TKeypressEvent(kbEnd)); |
| 190 | openButton.setEnabled(true); |
| 191 | activate(entryField); |
| 192 | } catch (IOException e) { |
| 193 | e.printStackTrace(); |
| 194 | } |
| 195 | } |
| 196 | } |
| 197 | ); |
| 198 | |
| 199 | String openLabel = ""; |
| 200 | switch (type) { |
| 201 | case OPEN: |
| 202 | openLabel = " &Open "; |
| 203 | setTitle("Open File..."); |
| 204 | break; |
| 205 | case SAVE: |
| 206 | openLabel = " &Save "; |
| 207 | setTitle("Save File..."); |
| 208 | break; |
| 209 | default: |
| 210 | throw new IllegalArgumentException("Invalid type: " + type); |
| 211 | } |
| 212 | |
| 213 | // Setup button actions |
| 214 | openButton = addButton(openLabel, this.getWidth() - 12, 3, |
| 215 | new TAction() { |
| 216 | public void DO() { |
| 217 | try { |
| 218 | checkFilename(entryField.getText()); |
| 219 | } catch (IOException e) { |
| 220 | e.printStackTrace(); |
| 221 | } |
| 222 | } |
| 223 | } |
| 224 | ); |
| 225 | openButton.setEnabled(false); |
| 226 | |
| 227 | addButton("&Cancel", getWidth() - 12, 5, |
| 228 | new TAction() { |
| 229 | public void DO() { |
| 230 | filename = null; |
| 231 | getApplication().closeWindow(TFileOpenBox.this); |
| 232 | } |
| 233 | } |
| 234 | ); |
| 235 | |
| 236 | // Default to the directory list |
| 237 | activate(directoryList); |
| 238 | |
| 239 | // Set the secondaryFiber to run me |
| 240 | getApplication().enableSecondaryEventReceiver(this); |
| 241 | |
| 242 | // Yield to the secondary thread. When I come back from the |
| 243 | // constructor response will already be set. |
| 244 | getApplication().yield(); |
| 245 | } |
| 246 | |
| 247 | /** |
| 248 | * Draw me on screen. |
| 249 | */ |
| 250 | @Override |
| 251 | public void draw() { |
| 252 | super.draw(); |
| 253 | getScreen().vLineXY(33, 4, getHeight() - 6, GraphicsChars.WINDOW_SIDE, |
| 254 | getBackground()); |
| 255 | } |
| 256 | |
| 257 | /** |
| 258 | * Handle keystrokes. |
| 259 | * |
| 260 | * @param keypress keystroke event |
| 261 | */ |
| 262 | @Override |
| 263 | public void onKeypress(final TKeypressEvent keypress) { |
| 264 | // Escape - behave like cancel |
| 265 | if (keypress.equals(kbEsc)) { |
| 266 | // Close window |
| 267 | filename = null; |
| 268 | getApplication().closeWindow(this); |
| 269 | return; |
| 270 | } |
| 271 | |
| 272 | // Pass to my parent |
| 273 | super.onKeypress(keypress); |
| 274 | } |
| 275 | |
| 276 | } |