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1
2
24
25 package javax.microedition.lcdui;
26
27 import com.barteo.emulator.device.DeviceFactory;
28 import com.barteo.emulator.device.InputMethod;
29 import com.barteo.emulator.device.InputMethodListener;
30 import com.barteo.emulator.device.InputMethodEvent;
31
32 public class TextField extends Item
33 {
34 public static final int ANY = 0;
35 public static final int EMAILADDR = 1;
36 public static final int NUMERIC = 2;
37 public static final int PHONENUMBER = 3;
38 public static final int URL = 4;
39
40 public static final int PASSWORD = 0x10000;
41 public static final int CONSTRAINT_MASK = 0xffff;
42
43 StringComponent stringComponent;
44
45 private String field;
46 private int caret;
47 private boolean caretVisible;
48 private int maxSize;
49 private int constraints;
50
51 private TextBox tb = null;
52
53 private InputMethodListener inputMethodListener = new InputMethodListener()
54 {
55 public void caretPositionChanged(InputMethodEvent event)
56 {
57 setCaretPosition(event.getCaret());
58 setCaretVisible(true);
59 repaint();
60 }
61
62 public void inputMethodTextChanged(InputMethodEvent event)
63 {
64 setCaretVisible(false);
65 setString(event.getText());
66 repaint();
67 }
68 };
69
70
71 public TextField(String label, String text, int maxSize, int constraints)
72 {
73 super(label);
74 if (maxSize <= 0) {
75 throw new IllegalArgumentException();
76 }
77 setConstraints(constraints);
78 this.maxSize = maxSize;
79 stringComponent = new StringComponent();
80 if (text != null) {
81 setString(text);
82 } else {
83 setString("");
84 }
85 stringComponent.setWidth(DeviceFactory.getDevice().getDeviceDisplay().getWidth() - 8);
86 setCaretPosition(getString().length());
87 setCaretVisible(false);
88 }
89
90
91 public String getString()
92 {
93 return field;
94 }
95
96
97 public void setString(String text)
98 {
99 validate(text);
100 if (text == null) {
101 field = "";
102 stringComponent.setText("");
103 } else {
104 if (text.length() > maxSize) {
105 throw new IllegalArgumentException();
106 }
107 field = text;
108 if ((constraints & PASSWORD) == 0) {
109 stringComponent.setText(text);
110 } else {
111 StringBuffer sb = new StringBuffer();
112 for (int i = 0; i < text.length(); i++) {
113 sb.append('*');
114 }
115 stringComponent.setText(sb.toString());
116 }
117 }
118 repaint();
119 }
120
121
122 public int getChars(char[] data)
123 {
124 if (data.length < field.length()) {
125 throw new ArrayIndexOutOfBoundsException();
126 }
127 getString().getChars(0, field.length(), data, 0);
128
129 return field.length();
130 }
131
132
133 public void setChars(char[] data, int offset, int length)
134 {
135 if (data == null) {
136 setString("");
137 } else {
138 if (length > maxSize) {
139 throw new IllegalArgumentException();
140 }
141 String newtext = new String(data, offset, length);
142 validate(newtext);
143 setString(newtext);
144 }
145 repaint();
146 }
147
148
149 public void insert(String src, int position)
150 {
151 validate(src);
152 if (field.length() + src.length() > maxSize) {
153 throw new IllegalArgumentException();
154 }
155 String newtext = "";
156 if (position > 0) {
157 newtext = getString().substring(0, position);
158 }
159 newtext += src;
160 if (position < field.length()) {
161 newtext += getString().substring(position + 1);
162 }
163 setString(newtext);
164 repaint();
165 }
166
167
168 public void insert(char[] data, int offset, int length, int position)
169 {
170 if (offset + length > data.length) {
171 throw new ArrayIndexOutOfBoundsException();
172 }
173 insert(new String(data, offset, length), position);
174 }
175
176
177 public void delete(int offset, int length)
178 {
179 if (offset + length > field.length()) {
180 throw new StringIndexOutOfBoundsException();
181 }
182 String newtext = "";
183 if (offset > 0) {
184 newtext = getString().substring(0, offset);
185 }
186 if (offset + length < field.length()) {
187 newtext += getString().substring(offset + length);
188 }
189 setString(newtext);
190 repaint();
191 }
192
193
194 public int getMaxSize()
195 {
196 return maxSize;
197 }
198
199
200 public int setMaxSize(int maxSize)
201 {
202 if (maxSize <= 0) {
203 throw new IllegalArgumentException();
204 }
205 if (field.length() > maxSize) {
206 setString(getString().substring(0, maxSize));
207 }
208 this.maxSize = maxSize;
209 return maxSize;
210 }
211
212
213 public int size()
214 {
215 return field.length();
216 }
217
218
219 public int getCaretPosition()
220 {
221 return caret;
222 }
223
224
225 public void setConstraints(int constraints)
226 {
227 if ((constraints & TextField.CONSTRAINT_MASK) < ANY
228 || (constraints & TextField.CONSTRAINT_MASK) > URL) {
229 throw new IllegalArgumentException("constraints is an illegal value");
230 }
231 this.constraints = constraints;
232 }
233
234
235 public int getConstraints()
236 {
237 return constraints;
238 }
239
240
241 public void setLabel(String label)
242 {
243 super.setLabel(label);
244 }
245
246
247 boolean isFocusable()
248 {
249 return true;
250 }
251
252
253 int getHeight()
254 {
255 return super.getHeight() + stringComponent.getHeight() + 8;
256 }
257
258
259 int paint(Graphics g)
260 {
261 super.paintContent(g);
262
263 g.translate(0, super.getHeight());
264 if (hasFocus()) {
265 g.drawRect(
266 1, 1,
267 DeviceFactory.getDevice().getDeviceDisplay().getWidth() - 3, stringComponent.getHeight() + 4);
268 }
269 g.translate(3, 3);
270 paintContent(g);
271 g.translate(-3, -3);
272 g.translate(0, -super.getHeight());
273
274 return getHeight();
275 }
276
277
278 void paintContent(Graphics g)
279 {
280 stringComponent.paint(g);
281 if (caretVisible) {
282 int x_pos = stringComponent.getCharPositionX(caret);
283 int y_pos = stringComponent.getCharPositionY(caret);
284 g.drawLine(x_pos, y_pos, x_pos, y_pos + Font.getDefaultFont().getHeight());
285 }
286 }
287
288
289 void setCaretPosition(int position)
290 {
291 caret = position;
292 }
293
294
295 void setCaretVisible(boolean state)
296 {
297 caretVisible = state;
298 }
299
300
301 int traverse(int gameKeyCode, int top, int bottom, boolean action)
302 {
303 if (gameKeyCode == Canvas.UP) {
304 if (top > 0) {
305 return -top;
306 } else {
307 return Item.OUTOFITEM;
308 }
309 }
310 if (gameKeyCode == Canvas.DOWN) {
311 if (getHeight() > bottom) {
312 return getHeight() - bottom;
313 } else {
314 return Item.OUTOFITEM;
315 }
316 }
317
318 return 0;
319 }
320
321
322 void setFocus(boolean hasFocus)
323 {
324 super.setFocus(hasFocus);
325 if (hasFocus) {
326 InputMethod inputMethod = DeviceFactory.getDevice().getInputMethod();
328 inputMethod.setInputMethodListener(inputMethodListener);
329 inputMethod.setConstraints(getConstraints());
330 inputMethod.setText(getString());
331 inputMethod.setMaxSize(getMaxSize());
332 setCaretVisible(true);
333 } else {
334 DeviceFactory.getDevice().getInputMethod().removeInputMethodListener(inputMethodListener);
336 setCaretVisible(false);
337 }
338 }
339
340
341 void validate(String text)
342 {
343 if ((constraints & CONSTRAINT_MASK) == ANY) {
345 return;
346 }
347
357
358
359 }
360
361 }
362 |
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