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daa4106c | 1 | /* |
0d47c546 KL |
2 | * Jexer - Java Text User Interface |
3 | * | |
e16dda65 | 4 | * The MIT License (MIT) |
0d47c546 | 5 | * |
a2018e99 | 6 | * Copyright (C) 2017 Kevin Lamonte |
0d47c546 | 7 | * |
e16dda65 KL |
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: | |
0d47c546 | 14 | * |
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15 | * The above copyright notice and this permission notice shall be included in |
16 | * all copies or substantial portions of the Software. | |
0d47c546 | 17 | * |
e16dda65 KL |
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. | |
0d47c546 KL |
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 { | |
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60 | /** |
61 | * Button will be labeled "Open". | |
62 | */ | |
0d47c546 | 63 | OPEN, |
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64 | |
65 | /** | |
66 | * Button will be labeled "Save". | |
67 | */ | |
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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 | */ | |
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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 | /** | |
a043164f KL |
111 | * See if there is a valid filename to return. If the filename is a |
112 | * directory, then | |
0d47c546 | 113 | * |
a043164f | 114 | * @param newFilename the filename to check and return |
329fd62e | 115 | * @throws IOException of a java.io operation throws |
0d47c546 | 116 | */ |
a043164f | 117 | private void checkFilename(final String newFilename) throws IOException { |
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118 | File newFile = new File(newFilename); |
119 | if (newFile.exists()) { | |
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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(); | |
0d47c546 | 130 | openButton.setEnabled(false); |
a043164f | 131 | directoryList.setPath(newFilename); |
0d47c546 | 132 | } |
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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 | |
329fd62e | 142 | * @throws IOException of a java.io operation throws |
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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() { | |
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154 | public void DO() { |
155 | try { | |
156 | checkFilename(entryField.getText()); | |
157 | } catch (IOException e) { | |
158 | e.printStackTrace(); | |
159 | } | |
160 | } | |
0d47c546 | 161 | }, null); |
a043164f | 162 | entryField.onKeypress(new TKeypressEvent(kbEnd)); |
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163 | |
164 | // Add directory treeView | |
165 | treeView = addTreeView(1, 3, 30, getHeight() - 6, | |
166 | new TAction() { | |
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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 | } | |
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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() { | |
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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 | } | |
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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() { | |
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216 | public void DO() { |
217 | try { | |
218 | checkFilename(entryField.getText()); | |
219 | } catch (IOException e) { | |
220 | e.printStackTrace(); | |
221 | } | |
222 | } | |
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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 | ||
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236 | // Default to the directory list |
237 | activate(directoryList); | |
238 | ||
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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 | } |