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daa4106c | 1 | /* |
0d47c546 KL |
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 { | |
329fd62e KL |
62 | /** |
63 | * Button will be labeled "Open". | |
64 | */ | |
0d47c546 | 65 | OPEN, |
329fd62e KL |
66 | |
67 | /** | |
68 | * Button will be labeled "Save". | |
69 | */ | |
0d47c546 KL |
70 | SAVE |
71 | } | |
72 | ||
73 | /** | |
74 | * String to return, or null if the user canceled. | |
75 | */ | |
76 | private String filename = null; | |
77 | ||
78 | /** | |
79 | * Get the return string. | |
80 | * | |
81 | * @return the filename the user selected, or null if they canceled. | |
82 | */ | |
83 | public String getFilename() { | |
84 | return filename; | |
85 | } | |
86 | ||
87 | /** | |
88 | * The left-side tree view pane. | |
89 | */ | |
90 | private TTreeView treeView; | |
91 | ||
92 | /** | |
93 | * The data behind treeView. | |
94 | */ | |
95 | private TDirectoryTreeItem treeViewRoot; | |
96 | ||
97 | /** | |
98 | * The right-side directory list pane. | |
99 | */ | |
0d47c546 KL |
100 | private TDirectoryList directoryList; |
101 | ||
102 | /** | |
103 | * The top row text field. | |
104 | */ | |
105 | private TField entryField; | |
106 | ||
107 | /** | |
108 | * The Open or Save button. | |
109 | */ | |
110 | private TButton openButton; | |
111 | ||
112 | /** | |
a043164f KL |
113 | * See if there is a valid filename to return. If the filename is a |
114 | * directory, then | |
0d47c546 | 115 | * |
a043164f | 116 | * @param newFilename the filename to check and return |
329fd62e | 117 | * @throws IOException of a java.io operation throws |
0d47c546 | 118 | */ |
a043164f | 119 | private void checkFilename(final String newFilename) throws IOException { |
0d47c546 KL |
120 | File newFile = new File(newFilename); |
121 | if (newFile.exists()) { | |
a043164f KL |
122 | if (newFile.isFile()) { |
123 | filename = newFilename; | |
124 | getApplication().closeWindow(this); | |
125 | return; | |
126 | } | |
127 | if (newFile.isDirectory()) { | |
128 | treeViewRoot = new TDirectoryTreeItem(treeView, newFilename, | |
129 | true); | |
130 | treeView.setTreeRoot(treeViewRoot, true); | |
131 | treeView.reflow(); | |
0d47c546 | 132 | openButton.setEnabled(false); |
a043164f | 133 | directoryList.setPath(newFilename); |
0d47c546 | 134 | } |
0d47c546 KL |
135 | } |
136 | } | |
137 | ||
138 | /** | |
139 | * Public constructor. The file open box will be centered on screen. | |
140 | * | |
141 | * @param application the TApplication that manages this window | |
142 | * @param path path of selected file | |
143 | * @param type one of the Type constants | |
329fd62e | 144 | * @throws IOException of a java.io operation throws |
0d47c546 KL |
145 | */ |
146 | public TFileOpenBox(final TApplication application, final String path, | |
147 | final Type type) throws IOException { | |
148 | ||
149 | // Register with the TApplication | |
150 | super(application, "", 0, 0, 76, 22, MODAL); | |
151 | ||
152 | // Add text field | |
153 | entryField = addField(1, 1, getWidth() - 4, false, | |
154 | (new File(path)).getCanonicalPath(), | |
155 | new TAction() { | |
a043164f KL |
156 | public void DO() { |
157 | try { | |
158 | checkFilename(entryField.getText()); | |
159 | } catch (IOException e) { | |
160 | e.printStackTrace(); | |
161 | } | |
162 | } | |
0d47c546 | 163 | }, null); |
a043164f | 164 | entryField.onKeypress(new TKeypressEvent(kbEnd)); |
0d47c546 KL |
165 | |
166 | // Add directory treeView | |
167 | treeView = addTreeView(1, 3, 30, getHeight() - 6, | |
168 | new TAction() { | |
a043164f KL |
169 | public void DO() { |
170 | TTreeItem item = treeView.getSelected(); | |
171 | File selectedDir = ((TDirectoryTreeItem) item).getFile(); | |
172 | try { | |
173 | directoryList.setPath(selectedDir.getCanonicalPath()); | |
174 | openButton.setEnabled(false); | |
175 | activate(directoryList); | |
176 | } catch (IOException e) { | |
177 | e.printStackTrace(); | |
178 | } | |
179 | } | |
0d47c546 KL |
180 | } |
181 | ); | |
182 | treeViewRoot = new TDirectoryTreeItem(treeView, path, true); | |
183 | ||
184 | // Add directory files list | |
185 | directoryList = addDirectoryList(path, 34, 3, 28, getHeight() - 6, | |
186 | new TAction() { | |
a043164f KL |
187 | public void DO() { |
188 | try { | |
189 | File newPath = directoryList.getPath(); | |
190 | entryField.setText(newPath.getCanonicalPath()); | |
191 | entryField.onKeypress(new TKeypressEvent(kbEnd)); | |
192 | openButton.setEnabled(true); | |
193 | activate(entryField); | |
194 | } catch (IOException e) { | |
195 | e.printStackTrace(); | |
196 | } | |
197 | } | |
0d47c546 KL |
198 | } |
199 | ); | |
200 | ||
201 | String openLabel = ""; | |
202 | switch (type) { | |
203 | case OPEN: | |
204 | openLabel = " &Open "; | |
205 | setTitle("Open File..."); | |
206 | break; | |
207 | case SAVE: | |
208 | openLabel = " &Save "; | |
209 | setTitle("Save File..."); | |
210 | break; | |
211 | default: | |
212 | throw new IllegalArgumentException("Invalid type: " + type); | |
213 | } | |
214 | ||
215 | // Setup button actions | |
216 | openButton = addButton(openLabel, this.getWidth() - 12, 3, | |
217 | new TAction() { | |
a043164f KL |
218 | public void DO() { |
219 | try { | |
220 | checkFilename(entryField.getText()); | |
221 | } catch (IOException e) { | |
222 | e.printStackTrace(); | |
223 | } | |
224 | } | |
0d47c546 KL |
225 | } |
226 | ); | |
227 | openButton.setEnabled(false); | |
228 | ||
229 | addButton("&Cancel", getWidth() - 12, 5, | |
230 | new TAction() { | |
231 | public void DO() { | |
232 | filename = null; | |
233 | getApplication().closeWindow(TFileOpenBox.this); | |
234 | } | |
235 | } | |
236 | ); | |
237 | ||
a043164f KL |
238 | // Default to the directory list |
239 | activate(directoryList); | |
240 | ||
0d47c546 KL |
241 | // Set the secondaryFiber to run me |
242 | getApplication().enableSecondaryEventReceiver(this); | |
243 | ||
244 | // Yield to the secondary thread. When I come back from the | |
245 | // constructor response will already be set. | |
246 | getApplication().yield(); | |
247 | } | |
248 | ||
249 | /** | |
250 | * Draw me on screen. | |
251 | */ | |
252 | @Override | |
253 | public void draw() { | |
254 | super.draw(); | |
255 | getScreen().vLineXY(33, 4, getHeight() - 6, GraphicsChars.WINDOW_SIDE, | |
256 | getBackground()); | |
257 | } | |
258 | ||
259 | /** | |
260 | * Handle keystrokes. | |
261 | * | |
262 | * @param keypress keystroke event | |
263 | */ | |
264 | @Override | |
265 | public void onKeypress(final TKeypressEvent keypress) { | |
266 | // Escape - behave like cancel | |
267 | if (keypress.equals(kbEsc)) { | |
268 | // Close window | |
269 | filename = null; | |
270 | getApplication().closeWindow(this); | |
271 | return; | |
272 | } | |
273 | ||
274 | // Pass to my parent | |
275 | super.onKeypress(keypress); | |
276 | } | |
277 | ||
278 | } |