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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 { | |
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 | */ | |
0d47c546 KL |
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 | /** | |
a043164f KL |
106 | * See if there is a valid filename to return. If the filename is a |
107 | * directory, then | |
0d47c546 | 108 | * |
a043164f | 109 | * @param newFilename the filename to check and return |
0d47c546 | 110 | */ |
a043164f | 111 | private void checkFilename(final String newFilename) throws IOException { |
0d47c546 KL |
112 | File newFile = new File(newFilename); |
113 | if (newFile.exists()) { | |
a043164f KL |
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(); | |
0d47c546 | 124 | openButton.setEnabled(false); |
a043164f | 125 | directoryList.setPath(newFilename); |
0d47c546 | 126 | } |
0d47c546 KL |
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() { | |
a043164f KL |
147 | public void DO() { |
148 | try { | |
149 | checkFilename(entryField.getText()); | |
150 | } catch (IOException e) { | |
151 | e.printStackTrace(); | |
152 | } | |
153 | } | |
0d47c546 | 154 | }, null); |
a043164f | 155 | entryField.onKeypress(new TKeypressEvent(kbEnd)); |
0d47c546 KL |
156 | |
157 | // Add directory treeView | |
158 | treeView = addTreeView(1, 3, 30, getHeight() - 6, | |
159 | new TAction() { | |
a043164f KL |
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 | } | |
0d47c546 KL |
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() { | |
a043164f KL |
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 | } | |
0d47c546 KL |
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() { | |
a043164f KL |
209 | public void DO() { |
210 | try { | |
211 | checkFilename(entryField.getText()); | |
212 | } catch (IOException e) { | |
213 | e.printStackTrace(); | |
214 | } | |
215 | } | |
0d47c546 KL |
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 | ||
a043164f KL |
229 | // Default to the directory list |
230 | activate(directoryList); | |
231 | ||
0d47c546 KL |
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 | } |