J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1995-2003 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package sun.awt.motif; |
| 27 | |
| 28 | import java.awt.*; |
| 29 | import java.awt.peer.*; |
| 30 | import java.awt.datatransfer.*; |
| 31 | import java.awt.event.ActionEvent; |
| 32 | import java.awt.event.TextEvent; |
| 33 | import java.awt.im.InputMethodRequests; |
| 34 | |
| 35 | |
| 36 | public class MTextFieldPeer extends MComponentPeer implements TextFieldPeer { |
| 37 | native void pCreate(MComponentPeer parent); |
| 38 | |
| 39 | private boolean firstChangeSkipped; |
| 40 | |
| 41 | /** |
| 42 | * Initialize JNI field and method IDs |
| 43 | */ |
| 44 | private static native void initIDs(); |
| 45 | |
| 46 | static { |
| 47 | initIDs(); |
| 48 | } |
| 49 | |
| 50 | void create(MComponentPeer parent) { |
| 51 | firstChangeSkipped = false; |
| 52 | pCreate(parent); |
| 53 | } |
| 54 | |
| 55 | void initialize() { |
| 56 | int start, end; |
| 57 | |
| 58 | TextField txt = (TextField)target; |
| 59 | |
| 60 | setText(txt.getText()); |
| 61 | if (txt.echoCharIsSet()) { |
| 62 | setEchoChar(txt.getEchoChar()); |
| 63 | } |
| 64 | |
| 65 | start = txt.getSelectionStart(); |
| 66 | end = txt.getSelectionEnd(); |
| 67 | |
| 68 | if (end > start) { |
| 69 | select(start, end); |
| 70 | } else { |
| 71 | setCaretPosition(start); |
| 72 | } |
| 73 | |
| 74 | if (!target.isBackgroundSet()) { |
| 75 | // This is a way to set the background color of the TextArea |
| 76 | // without calling setBackground - go through native C code |
| 77 | setTargetBackground(SystemColor.text); |
| 78 | } |
| 79 | if (!target.isForegroundSet()) { |
| 80 | target.setForeground(SystemColor.textText); |
| 81 | } |
| 82 | |
| 83 | setEditable(txt.isEditable()); |
| 84 | |
| 85 | // oldSelectionStart = -1; // accessibility support |
| 86 | // oldSelectionEnd = -1; // accessibility support |
| 87 | |
| 88 | super.initialize(); |
| 89 | } |
| 90 | |
| 91 | public MTextFieldPeer(TextField target) { |
| 92 | super(target); |
| 93 | } |
| 94 | |
| 95 | public void setEditable(boolean editable) { |
| 96 | pSetEditable(editable); |
| 97 | |
| 98 | /* 4136955 - Calling setBackground() here works around an Xt |
| 99 | * bug by forcing Xt to flush an internal widget cache |
| 100 | */ |
| 101 | setBackground(target.getBackground()); |
| 102 | } |
| 103 | |
| 104 | public native void pSetEditable(boolean editable); |
| 105 | public native void select(int selStart, int selEnd); |
| 106 | public native int getSelectionStart(); |
| 107 | public native int getSelectionEnd(); |
| 108 | public native void setText(String l); |
| 109 | public native void insertReplaceText(String l); |
| 110 | public native void preDispose(); |
| 111 | public native String getText(); |
| 112 | public native void setEchoChar(char c); |
| 113 | public native void setFont(Font f); |
| 114 | public native void setCaretPosition(int pos); |
| 115 | public native int getCaretPosition(); |
| 116 | |
| 117 | // CDE/Motif defaults: margin=5, shadow=2, highlight=1 -- times 2. |
| 118 | // Should have asked the widgets for correct values (see MTextAreaPeer). |
| 119 | private static final int padding = 16; |
| 120 | |
| 121 | public Dimension getMinimumSize() { |
| 122 | FontMetrics fm = getFontMetrics(target.getFont()); |
| 123 | return new Dimension(fm.stringWidth(((TextField)target).getText())+20, |
| 124 | fm.getMaxDescent() + fm.getMaxAscent() + padding); |
| 125 | } |
| 126 | |
| 127 | public Dimension getPreferredSize(int cols) { |
| 128 | return getMinimumSize(cols); |
| 129 | } |
| 130 | |
| 131 | public Dimension getMinimumSize(int cols) { |
| 132 | FontMetrics fm = getFontMetrics(target.getFont()); |
| 133 | return new Dimension(fm.charWidth('0') * cols + 20, |
| 134 | fm.getMaxDescent() + fm.getMaxAscent() + padding); |
| 135 | } |
| 136 | |
| 137 | public boolean isFocusable() { |
| 138 | return true; |
| 139 | } |
| 140 | |
| 141 | // NOTE: This method is called by privileged threads. |
| 142 | // DO NOT INVOKE CLIENT CODE ON THIS THREAD! |
| 143 | public void action(final long when, final int modifiers) { |
| 144 | MToolkit.executeOnEventHandlerThread(target, new Runnable() { |
| 145 | public void run() { |
| 146 | postEvent(new ActionEvent(target, ActionEvent.ACTION_PERFORMED, |
| 147 | ((TextField)target).getText(), when, |
| 148 | modifiers)); |
| 149 | } |
| 150 | }); |
| 151 | } |
| 152 | |
| 153 | protected void disposeImpl() { |
| 154 | preDispose(); |
| 155 | super.disposeImpl(); |
| 156 | } |
| 157 | |
| 158 | /* |
| 159 | * Post a new TextEvent when the value of a text component changes. |
| 160 | */ |
| 161 | public void valueChanged() { |
| 162 | postEvent(new TextEvent(target, TextEvent.TEXT_VALUE_CHANGED)); |
| 163 | } |
| 164 | |
| 165 | // Called from native widget when paste key is pressed and we |
| 166 | // already own the selection (prevents Motif from hanging while |
| 167 | // waiting for the selection) |
| 168 | // |
| 169 | // NOTE: This method is called by privileged threads. |
| 170 | // DO NOT INVOKE CLIENT CODE ON THIS THREAD! |
| 171 | public void pasteFromClipboard() { |
| 172 | Clipboard clipboard = target.getToolkit().getSystemClipboard(); |
| 173 | |
| 174 | Transferable content = clipboard.getContents(this); |
| 175 | if (content != null) { |
| 176 | try { |
| 177 | String data = (String)(content.getTransferData(DataFlavor.stringFlavor)); |
| 178 | insertReplaceText(data); |
| 179 | |
| 180 | } catch (Exception e) { |
| 181 | } |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | /* |
| 186 | * Print the native component by rendering the Motif look ourselves. |
| 187 | * ToDo(aim): needs to query native motif for more accurate size and |
| 188 | * color information, left text offset, and selected text. |
| 189 | */ |
| 190 | public final static int BORDER = 2; |
| 191 | public final static int MARGIN = 4; |
| 192 | |
| 193 | public void print(Graphics g) { |
| 194 | TextField txt = (TextField)target; |
| 195 | Dimension d = txt.size(); |
| 196 | int w = d.width - (2 * BORDER); |
| 197 | int h = d.height - (2 * BORDER); |
| 198 | Color bg = txt.getBackground(); |
| 199 | Color fg = txt.getForeground(); |
| 200 | Color highlight = bg.brighter(); |
| 201 | String text = txt.getText(); |
| 202 | int moved = 0; |
| 203 | int selStart = 0; |
| 204 | int selEnd = 0; |
| 205 | |
| 206 | g.setFont(txt.getFont()); |
| 207 | g.setColor(txt.isEditable() ? highlight : bg); |
| 208 | g.fillRect(BORDER, BORDER, w, h); |
| 209 | |
| 210 | g.setColor(bg); |
| 211 | //g.drawRect(0, 0, d.width-1, d.height-1); |
| 212 | draw3DRect(g, bg, 1, 1, d.width-3, d.height-3, false); |
| 213 | |
| 214 | if (text != null) { |
| 215 | g.clipRect(BORDER, MARGIN, w, d.height - (2 * MARGIN)); |
| 216 | FontMetrics fm = g.getFontMetrics(); |
| 217 | |
| 218 | w = d.width - BORDER; |
| 219 | h = d.height - (2 * MARGIN); |
| 220 | int xs = pos2x(selStart) - moved; |
| 221 | int xe = pos2x(selEnd) - moved; |
| 222 | |
| 223 | if ((xs < MARGIN) && (xe > w)) { |
| 224 | g.setColor(highlight); |
| 225 | g.fillRect(BORDER, MARGIN, w - BORDER, h); |
| 226 | } else { |
| 227 | g.setColor(bg); |
| 228 | //g.fillRect(BORDER, MARGIN, w - BORDER, h); |
| 229 | |
| 230 | if ((xs >= MARGIN) && (xs <= w)) { |
| 231 | g.setColor(highlight); // selected text |
| 232 | |
| 233 | if (xe > w) { |
| 234 | g.fillRect(xs, MARGIN, w - xs, h); |
| 235 | } else if (xs == xe) { |
| 236 | //g.fillRect(xs, MARGIN, 1, h); |
| 237 | } else { |
| 238 | g.fillRect(xs, MARGIN, xe - xs, h); |
| 239 | } |
| 240 | } else if ((xe >= MARGIN) && (xe <= w)) { |
| 241 | g.setColor(highlight); |
| 242 | g.fillRect(BORDER, MARGIN, xe - BORDER, h); |
| 243 | } |
| 244 | } |
| 245 | g.setColor(fg); |
| 246 | int x = MARGIN - moved; |
| 247 | char echoChar = txt.getEchoChar(); |
| 248 | if (echoChar == 0) { |
| 249 | g.drawString(text, x, BORDER + MARGIN + fm.getMaxAscent()); |
| 250 | } else { |
| 251 | char data[] = new char[text.length()]; |
| 252 | for (int i = 0 ; i < data.length ; i++) { |
| 253 | data[i] = echoChar; |
| 254 | } |
| 255 | g.drawChars(data, 0, data.length, x, |
| 256 | BORDER + MARGIN + fm.getMaxAscent()); |
| 257 | |
| 258 | } |
| 259 | } |
| 260 | |
| 261 | target.print(g); |
| 262 | } |
| 263 | |
| 264 | int pos2x(int pos) { |
| 265 | TextField txt = (TextField)target; |
| 266 | FontMetrics fm = getFontMetrics(txt.getFont()); |
| 267 | int x = MARGIN, widths[] = fm.getWidths(); |
| 268 | String text = txt.getText(); |
| 269 | char echoChar = txt.getEchoChar(); |
| 270 | if (echoChar == 0) { |
| 271 | for (int i = 0 ; i < pos ; i++) { |
| 272 | x += widths[text.charAt(i)]; |
| 273 | } |
| 274 | } else { |
| 275 | x += widths[echoChar] * pos; |
| 276 | } |
| 277 | return x; |
| 278 | } |
| 279 | |
| 280 | /** |
| 281 | * DEPRECATED |
| 282 | */ |
| 283 | public void setEchoCharacter(char c) { |
| 284 | setEchoChar(c); |
| 285 | } |
| 286 | |
| 287 | /** |
| 288 | * DEPRECATED |
| 289 | */ |
| 290 | public Dimension minimumSize() { |
| 291 | return getMinimumSize(); |
| 292 | } |
| 293 | |
| 294 | /** |
| 295 | * DEPRECATED |
| 296 | */ |
| 297 | public Dimension minimumSize(int cols) { |
| 298 | return getMinimumSize(cols); |
| 299 | } |
| 300 | |
| 301 | /** |
| 302 | * DEPRECATED |
| 303 | */ |
| 304 | public Dimension preferredSize(int cols) { |
| 305 | return getPreferredSize(cols); |
| 306 | } |
| 307 | void pShow(){ |
| 308 | super.pShow(); |
| 309 | notifyTextComponentChange(true); |
| 310 | } |
| 311 | |
| 312 | void pHide(){ |
| 313 | notifyTextComponentChange(false); |
| 314 | super.pHide(); |
| 315 | } |
| 316 | |
| 317 | void pDispose(){ |
| 318 | notifyTextComponentChange(false); |
| 319 | super.pDispose(); |
| 320 | } |
| 321 | |
| 322 | public InputMethodRequests getInputMethodRequests() { |
| 323 | return null; |
| 324 | } |
| 325 | |
| 326 | |
| 327 | |
| 328 | // |
| 329 | // Accessibility support |
| 330 | // |
| 331 | |
| 332 | // stub functions: to be fully implemented in a future release |
| 333 | public int getIndexAtPoint(int x, int y) { return -1; } |
| 334 | public Rectangle getCharacterBounds(int i) { return null; } |
| 335 | public long filterEvents(long mask) { return 0; } |
| 336 | |
| 337 | |
| 338 | /* To be fully implemented in a future release |
| 339 | |
| 340 | int oldSelectionStart; |
| 341 | int oldSelectionEnd; |
| 342 | |
| 343 | public native int getIndexAtPoint(int x, int y); |
| 344 | public native Rectangle getCharacterBounds(int i); |
| 345 | public native long filterEvents(long mask); |
| 346 | |
| 347 | /** |
| 348 | * Handle a change in the text selection endpoints |
| 349 | * (Note: could be simply a change in the caret location) |
| 350 | * |
| 351 | public void selectionValuesChanged(int start, int end) { |
| 352 | return; // Need to write implemetation of this. |
| 353 | } |
| 354 | */ |
| 355 | |
| 356 | } |