Mercurial > projects > dwt-linux
annotate dwt/widgets/Link.d @ 238:380bad9f6852
reverted char[] to String
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Mon, 05 May 2008 00:42:55 +0200 |
| parents | 08789b28bdf3 |
| children | ce446666f5a2 |
| rev | line source |
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1 /******************************************************************************* |
| 82 | 2 * Copyright (c) 2000, 2007 IBM Corporation and others. |
| 3 * All rights reserved. This program and the accompanying materials | |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 108 | 10 * Port to the D programming language: |
| 11 * Frank Benoit <benoit@tionex.de> | |
| 82 | 12 *******************************************************************************/ |
| 13 module dwt.widgets.Link; | |
| 14 | |
| 15 | |
| 16 import dwt.DWT; | |
| 17 import dwt.DWTException; | |
| 18 import dwt.accessibility.ACC; | |
| 19 import dwt.accessibility.Accessible; | |
| 20 import dwt.accessibility.AccessibleAdapter; | |
| 21 import dwt.accessibility.AccessibleControlAdapter; | |
| 22 import dwt.accessibility.AccessibleControlEvent; | |
| 23 import dwt.accessibility.AccessibleEvent; | |
| 24 import dwt.events.SelectionEvent; | |
| 25 import dwt.events.SelectionListener; | |
| 26 import dwt.graphics.Color; | |
| 27 import dwt.graphics.Font; | |
| 28 import dwt.graphics.GC; | |
| 29 import dwt.graphics.GCData; | |
| 30 import dwt.graphics.Point; | |
| 31 import dwt.graphics.RGB; | |
| 32 import dwt.graphics.Rectangle; | |
| 33 import dwt.graphics.TextLayout; | |
| 34 import dwt.graphics.TextStyle; | |
| 35 import dwt.internal.gtk.OS; | |
| 36 | |
| 37 import dwt.graphics.Cursor; | |
| 38 import dwt.widgets.Control; | |
| 39 import dwt.widgets.Composite; | |
| 40 import dwt.widgets.TypedListener; | |
| 41 import dwt.widgets.Event; | |
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42 import dwt.dwthelper.utils; |
| 82 | 43 |
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44 static import tango.text.Text; |
| 82 | 45 import tango.text.Unicode; |
| 46 | |
| 47 alias tango.text.Text.Text!(char) Text8; | |
| 181 | 48 |
| 82 | 49 /** |
| 50 * Instances of this class represent a selectable | |
| 51 * user interface object that displays a text with | |
| 52 * links. | |
| 53 * <p> | |
| 54 * <dl> | |
| 55 * <dt><b>Styles:</b></dt> | |
| 56 * <dd>(none)</dd> | |
| 57 * <dt><b>Events:</b></dt> | |
| 58 * <dd>Selection</dd> | |
| 59 * </dl> | |
| 60 * <p> | |
| 61 * IMPORTANT: This class is <em>not</em> intended to be subclassed. | |
| 62 * </p> | |
| 63 * | |
| 64 * @since 3.1 | |
| 65 */ | |
| 66 public class Link : Control { | |
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67 |
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68 alias Control.computeSize computeSize; |
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69 alias Control.fixStyle fixStyle; |
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70 alias Control.setBounds setBounds; |
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71 |
| 238 | 72 String text; |
| 82 | 73 TextLayout layout; |
| 74 Color linkColor, disabledColor; | |
| 75 Point [] offsets; | |
| 76 Point selection; | |
| 238 | 77 String [] ids; |
| 82 | 78 int [] mnemonics; |
| 79 int focusIndex; | |
| 80 | |
| 81 static RGB LINK_FOREGROUND; | |
| 82 static RGB LINK_DISABLED_FOREGROUND; | |
| 83 | |
| 84 static void static_this(){ | |
| 85 if( LINK_FOREGROUND is null ){ | |
| 86 LINK_FOREGROUND = new RGB (0, 51, 153); | |
| 87 } | |
| 88 if( LINK_DISABLED_FOREGROUND is null ){ | |
| 89 LINK_DISABLED_FOREGROUND = new RGB (172, 168, 153); | |
| 90 } | |
| 91 } | |
| 92 | |
| 93 /** | |
| 94 * Constructs a new instance of this class given its parent | |
| 95 * and a style value describing its behavior and appearance. | |
| 96 * <p> | |
| 97 * The style value is either one of the style constants defined in | |
| 98 * class <code>DWT</code> which is applicable to instances of this | |
| 99 * class, or must be built by <em>bitwise OR</em>'ing together | |
| 100 * (that is, using the <code>int</code> "|" operator) two or more | |
| 101 * of those <code>DWT</code> style constants. The class description | |
| 102 * lists the style constants that are applicable to the class. | |
| 103 * Style bits are also inherited from superclasses. | |
| 104 * </p> | |
| 105 * | |
| 106 * @param parent a composite control which will be the parent of the new instance (cannot be null) | |
| 107 * @param style the style of control to construct | |
| 108 * | |
| 109 * @exception IllegalArgumentException <ul> | |
| 110 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> | |
| 111 * </ul> | |
| 112 * @exception DWTException <ul> | |
| 113 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> | |
| 114 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> | |
| 115 * </ul> | |
| 116 * | |
| 117 * @see Widget#checkSubclass | |
| 118 * @see Widget#getStyle | |
| 119 */ | |
| 120 public this (Composite parent, int style) { | |
| 140 | 121 static_this(); |
| 82 | 122 super (parent, style); |
| 123 } | |
| 124 | |
| 125 /** | |
| 126 * Adds the listener to the collection of listeners who will | |
| 127 * be notified when the control is selected by the user, by sending | |
| 128 * it one of the messages defined in the <code>SelectionListener</code> | |
| 129 * interface. | |
| 130 * <p> | |
| 131 * <code>widgetSelected</code> is called when the control is selected by the user. | |
| 132 * <code>widgetDefaultSelected</code> is not called. | |
| 133 * </p> | |
| 134 * | |
| 135 * @param listener the listener which should be notified | |
| 136 * | |
| 137 * @exception IllegalArgumentException <ul> | |
| 138 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
| 139 * </ul> | |
| 140 * @exception DWTException <ul> | |
| 141 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 142 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 143 * </ul> | |
| 144 * | |
| 145 * @see SelectionListener | |
| 146 * @see #removeSelectionListener | |
| 147 * @see SelectionEvent | |
| 148 */ | |
| 149 public void addSelectionListener (SelectionListener listener) { | |
| 150 checkWidget (); | |
| 151 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); | |
| 152 TypedListener typedListener = new TypedListener (listener); | |
| 153 addListener (DWT.Selection, typedListener); | |
| 154 addListener (DWT.DefaultSelection, typedListener); | |
| 155 } | |
| 156 | |
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157 public override Point computeSize (int wHint, int hHint, bool changed) { |
| 82 | 158 checkWidget (); |
| 159 if (wHint !is DWT.DEFAULT && wHint < 0) wHint = 0; | |
| 160 if (hHint !is DWT.DEFAULT && hHint < 0) hHint = 0; | |
| 161 int width, height; | |
| 162 int layoutWidth = layout.getWidth (); | |
| 163 //TEMPORARY CODE | |
| 164 if (wHint is 0) { | |
| 165 layout.setWidth (1); | |
| 166 Rectangle rect = layout.getBounds (); | |
| 167 width = 0; | |
| 168 height = rect.height; | |
| 169 } else { | |
| 170 layout.setWidth (wHint); | |
| 171 Rectangle rect = layout.getBounds (); | |
| 172 width = rect.width; | |
| 173 height = rect.height; | |
| 174 } | |
| 175 layout.setWidth (layoutWidth); | |
| 176 if (wHint !is DWT.DEFAULT) width = wHint; | |
| 177 if (hHint !is DWT.DEFAULT) height = hHint; | |
| 178 int border = getBorderWidth (); | |
| 179 width += border * 2; | |
| 180 height += border * 2; | |
| 181 return new Point (width, height); | |
| 182 } | |
| 183 | |
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184 override void createHandle(int index) { |
| 82 | 185 state |= HANDLE | THEME_BACKGROUND; |
| 186 handle = cast(GtkWidget*)OS.g_object_new (display.gtk_fixed_get_type (), null); | |
| 187 if (handle is null) DWT.error (DWT.ERROR_NO_HANDLES); | |
| 188 OS.gtk_fixed_set_has_window (handle, true); | |
| 189 OS.GTK_WIDGET_SET_FLAGS (handle, OS.GTK_CAN_FOCUS); | |
| 190 layout = new TextLayout (display); | |
| 191 linkColor = new Color (display, LINK_FOREGROUND); | |
| 192 disabledColor = new Color (display, LINK_DISABLED_FOREGROUND); | |
| 193 offsets = null; | |
| 194 ids = null; | |
| 195 mnemonics = null; | |
| 196 selection = new Point (-1, -1); | |
| 197 focusIndex = -1; | |
| 198 } | |
| 199 | |
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200 override void createWidget (int index) { |
| 82 | 201 super.createWidget (index); |
| 202 layout.setFont (getFont ()); | |
| 203 text = ""; | |
| 204 initAccessible (); | |
| 205 } | |
| 206 | |
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207 override void enableWidget (bool enabled) { |
| 82 | 208 super.enableWidget (enabled); |
| 209 if (isDisposed ()) return; | |
| 210 TextStyle linkStyle = new TextStyle (null, enabled ? linkColor : disabledColor, null); | |
| 211 linkStyle.underline = true; | |
| 212 for (int i = 0; i < offsets.length; i++) { | |
| 213 Point point = offsets [i]; | |
| 214 layout.setStyle (linkStyle, point.x, point.y); | |
| 215 } | |
| 216 redraw (); | |
| 217 } | |
| 218 | |
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219 override void fixStyle () { |
| 82 | 220 fixStyle (handle); |
| 221 } | |
| 222 | |
| 223 void initAccessible () { | |
| 224 Accessible accessible = getAccessible (); | |
| 225 accessible.addAccessibleListener (new class () AccessibleAdapter { | |
| 226 public void getName (AccessibleEvent e) { | |
| 227 e.result = parse (text); | |
| 228 } | |
| 229 }); | |
| 230 | |
| 231 accessible.addAccessibleControlListener (new class () AccessibleControlAdapter { | |
| 232 public void getChildAtPoint (AccessibleControlEvent e) { | |
| 233 e.childID = ACC.CHILDID_SELF; | |
| 234 } | |
| 235 | |
| 236 public void getLocation (AccessibleControlEvent e) { | |
| 237 Rectangle rect = display.map (getParent (), null, getBounds ()); | |
| 238 e.x = rect.x; | |
| 239 e.y = rect.y; | |
| 240 e.width = rect.width; | |
| 241 e.height = rect.height; | |
| 242 } | |
| 243 | |
| 244 public void getChildCount (AccessibleControlEvent e) { | |
| 245 e.detail = 0; | |
| 246 } | |
| 247 | |
| 248 public void getRole (AccessibleControlEvent e) { | |
| 249 e.detail = ACC.ROLE_LINK; | |
| 250 } | |
| 251 | |
| 252 public void getState (AccessibleControlEvent e) { | |
| 253 e.detail = ACC.STATE_FOCUSABLE; | |
| 254 if (hasFocus ()) e.detail |= ACC.STATE_FOCUSED; | |
| 255 } | |
| 256 | |
| 257 public void getDefaultAction (AccessibleControlEvent e) { | |
| 258 e.result = DWT.getMessage ("SWT_Press"); //$NON-NLS-1$ | |
| 259 } | |
| 260 | |
| 261 public void getSelection (AccessibleControlEvent e) { | |
| 262 if (hasFocus ()) e.childID = ACC.CHILDID_SELF; | |
| 263 } | |
| 264 | |
| 265 public void getFocus (AccessibleControlEvent e) { | |
| 266 if (hasFocus ()) e.childID = ACC.CHILDID_SELF; | |
| 267 } | |
| 268 }); | |
| 269 } | |
| 270 | |
| 238 | 271 override String getNameText () { |
| 82 | 272 return getText (); |
| 273 } | |
| 274 | |
| 275 Rectangle [] getRectangles (int linkIndex) { | |
| 276 int lineCount = layout.getLineCount (); | |
| 277 Rectangle [] rects = new Rectangle [lineCount]; | |
| 278 int [] lineOffsets = layout.getLineOffsets (); | |
| 279 Point point = offsets [linkIndex]; | |
| 280 int lineStart = 1; | |
| 281 while (point.x > lineOffsets [lineStart]) lineStart++; | |
| 282 int lineEnd = 1; | |
| 283 while (point.y > lineOffsets [lineEnd]) lineEnd++; | |
| 284 int index = 0; | |
| 285 if (lineStart is lineEnd) { | |
| 286 rects [index++] = layout.getBounds (point.x, point.y); | |
| 287 } else { | |
| 288 rects [index++] = layout.getBounds (point.x, lineOffsets [lineStart]-1); | |
| 289 rects [index++] = layout.getBounds (lineOffsets [lineEnd-1], point.y); | |
| 290 if (lineEnd - lineStart > 1) { | |
| 291 for (int i = lineStart; i < lineEnd - 1; i++) { | |
| 292 rects [index++] = layout.getLineBounds (i); | |
| 293 } | |
| 294 } | |
| 295 } | |
| 296 if (rects.length !is index) { | |
| 297 Rectangle [] tmp = new Rectangle [index]; | |
| 298 System.arraycopy (rects, 0, tmp, 0, index); | |
| 299 rects = tmp; | |
| 300 } | |
| 301 return rects; | |
| 302 } | |
| 303 | |
| 304 /** | |
| 305 * Returns the receiver's text, which will be an empty | |
| 306 * string if it has never been set. | |
| 307 * | |
| 308 * @return the receiver's text | |
| 309 * | |
| 310 * @exception DWTException <ul> | |
| 311 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 312 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 313 * </ul> | |
| 314 */ | |
| 238 | 315 public String getText () { |
| 82 | 316 checkWidget (); |
| 317 return text; | |
| 318 } | |
| 319 | |
| 320 override int gtk_button_press_event (GtkWidget* widget, GdkEventButton* gdkEvent) { | |
| 321 int /*long*/ result = super.gtk_button_press_event (widget, gdkEvent); | |
| 322 if (result !is 0) return result; | |
| 323 if (gdkEvent.button is 1 && gdkEvent.type is OS.GDK_BUTTON_PRESS) { | |
| 324 if (focusIndex !is -1) setFocus (); | |
| 325 int x = cast(int) gdkEvent.x; | |
| 326 int y = cast(int) gdkEvent.y; | |
| 327 int offset = layout.getOffset (x, y, null); | |
| 328 int oldSelectionX = selection.x; | |
| 329 int oldSelectionY = selection.y; | |
| 330 selection.x = offset; | |
| 331 selection.y = -1; | |
| 332 if (oldSelectionX !is -1 && oldSelectionY !is -1) { | |
| 333 if (oldSelectionX > oldSelectionY) { | |
| 334 int temp = oldSelectionX; | |
| 335 oldSelectionX = oldSelectionY; | |
| 336 oldSelectionY = temp; | |
| 337 } | |
| 338 Rectangle rect = layout.getBounds (oldSelectionX, oldSelectionY); | |
| 339 redraw (rect.x, rect.y, rect.width, rect.height, false); | |
| 340 } | |
| 341 for (int j = 0; j < offsets.length; j++) { | |
| 342 Rectangle [] rects = getRectangles (j); | |
| 343 for (int i = 0; i < rects.length; i++) { | |
| 344 Rectangle rect = rects [i]; | |
| 345 if (rect.contains (x, y)) { | |
| 346 focusIndex = j; | |
| 347 redraw (); | |
| 348 return result; | |
| 349 } | |
| 350 } | |
| 351 } | |
| 352 } | |
| 353 return result; | |
| 354 } | |
| 355 | |
| 356 override int /*long*/ gtk_button_release_event (GtkWidget* widget, GdkEventButton* gdkEvent) { | |
| 357 int /*long*/ result = super.gtk_button_release_event (widget, gdkEvent); | |
| 358 if (result !is 0) return result; | |
| 359 if (focusIndex is -1) return result; | |
| 360 if (gdkEvent.button is 1) { | |
| 361 int x = cast(int) gdkEvent.x; | |
| 362 int y = cast(int) gdkEvent.y; | |
| 363 Rectangle [] rects = getRectangles (focusIndex); | |
| 364 for (int i = 0; i < rects.length; i++) { | |
| 365 Rectangle rect = rects [i]; | |
| 366 if (rect.contains (x, y)) { | |
| 367 Event ev = new Event (); | |
| 368 ev.text = ids [focusIndex]; | |
| 369 sendEvent (DWT.Selection, ev); | |
| 370 return result; | |
| 371 } | |
| 372 } | |
| 373 } | |
| 374 return result; | |
| 375 } | |
| 376 | |
| 377 override int /*long*/ gtk_event_after (GtkWidget* widget, GdkEvent* event) { | |
| 378 int /*long*/ result = super.gtk_event_after (widget, event); | |
| 379 switch (event.type) { | |
| 380 case OS.GDK_FOCUS_CHANGE: | |
| 381 redraw (); | |
| 382 break; | |
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383 default: |
| 82 | 384 } |
| 385 return result; | |
| 386 } | |
| 387 | |
| 388 override int /*long*/ gtk_expose_event (GtkWidget* widget, GdkEventExpose* gdkEvent) { | |
| 389 if ((state & OBSCURED) !is 0) return 0; | |
| 390 GCData data = new GCData (); | |
| 391 data.damageRgn = gdkEvent.region; | |
| 392 GC gc = GC.gtk_new (this, data); | |
| 393 OS.gdk_gc_set_clip_region (gc.handle, gdkEvent.region); | |
| 394 int selStart = selection.x; | |
| 395 int selEnd = selection.y; | |
| 396 if (selStart > selEnd) { | |
| 397 selStart = selection.y; | |
| 398 selEnd = selection.x; | |
| 399 } | |
| 400 // temporary code to disable text selection | |
| 401 selStart = selEnd = -1; | |
| 402 if ((state & DISABLED) !is 0) gc.setForeground (disabledColor); | |
| 403 layout.draw (gc, 0, 0, selStart, selEnd, null, null); | |
| 404 if (hasFocus () && focusIndex !is -1) { | |
| 405 Rectangle [] rects = getRectangles (focusIndex); | |
| 406 for (int i = 0; i < rects.length; i++) { | |
| 407 Rectangle rect = rects [i]; | |
| 408 gc.drawFocus (rect.x, rect.y, rect.width, rect.height); | |
| 409 } | |
| 410 } | |
| 411 if (hooks (DWT.Paint) || filters (DWT.Paint)) { | |
| 412 Event event = new Event (); | |
| 413 event.count = gdkEvent.count; | |
| 414 event.x = gdkEvent.area.x; | |
| 415 event.y = gdkEvent.area.y; | |
| 416 event.width = gdkEvent.area.width; | |
| 417 event.height = gdkEvent.area.height; | |
| 418 event.gc = gc; | |
| 419 sendEvent (DWT.Paint, event); | |
| 420 event.gc = null; | |
| 421 } | |
| 422 gc.dispose (); | |
| 423 return 0; | |
| 424 } | |
| 425 | |
| 426 override int /*long*/ gtk_key_press_event (GtkWidget* widget, GdkEventKey* gdkEvent) { | |
| 427 int /*long*/ result = super.gtk_key_press_event (widget, gdkEvent); | |
| 428 if (result !is 0) return result; | |
| 429 if (focusIndex is -1) return result; | |
| 430 switch (gdkEvent.keyval) { | |
| 431 case OS.GDK_Return: | |
| 432 case OS.GDK_KP_Enter: | |
| 433 case OS.GDK_space: | |
| 434 Event event = new Event (); | |
| 435 event.text = ids [focusIndex]; | |
| 436 sendEvent (DWT.Selection, event); | |
| 437 break; | |
| 438 case OS.GDK_Tab: | |
| 439 if (focusIndex < offsets.length - 1) { | |
| 440 focusIndex++; | |
| 441 redraw (); | |
| 442 } | |
| 443 break; | |
| 444 case OS.GDK_ISO_Left_Tab: | |
| 445 if (focusIndex > 0) { | |
| 446 focusIndex--; | |
| 447 redraw (); | |
| 448 } | |
| 449 break; | |
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450 default: |
| 82 | 451 } |
| 452 return result; | |
| 453 } | |
| 454 | |
| 455 override int /*long*/ gtk_motion_notify_event (GtkWidget* widget, GdkEventMotion* gdkEvent) { | |
| 456 int /*long*/ result = super.gtk_motion_notify_event (widget, gdkEvent); | |
| 457 if (result !is 0) return result; | |
| 458 int x = cast(int) gdkEvent.x; | |
| 459 int y = cast(int) gdkEvent.y; | |
| 460 if ((gdkEvent.state & OS.GDK_BUTTON1_MASK) !is 0) { | |
| 461 int oldSelection = selection.y; | |
| 462 selection.y = layout.getOffset (x, y, null); | |
| 463 if (selection.y !is oldSelection) { | |
| 464 int newSelection = selection.y; | |
| 465 if (oldSelection > newSelection) { | |
| 466 int temp = oldSelection; | |
| 467 oldSelection = newSelection; | |
| 468 newSelection = temp; | |
| 469 } | |
| 470 Rectangle rect = layout.getBounds (oldSelection, newSelection); | |
| 471 redraw (rect.x, rect.y, rect.width, rect.height, false); | |
| 472 } | |
| 473 } else { | |
| 474 for (int j = 0; j < offsets.length; j++) { | |
| 475 Rectangle [] rects = getRectangles (j); | |
| 476 for (int i = 0; i < rects.length; i++) { | |
| 477 Rectangle rect = rects [i]; | |
| 478 if (rect.contains (x, y)) { | |
| 479 setCursor (display.getSystemCursor (DWT.CURSOR_HAND)); | |
| 480 return result; | |
| 481 } | |
| 482 } | |
| 483 } | |
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484 setCursor (null); |
| 82 | 485 } |
| 486 return result; | |
| 487 } | |
| 488 | |
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489 override void releaseWidget () { |
| 82 | 490 super.releaseWidget (); |
| 491 if (layout !is null) layout.dispose (); | |
| 492 layout = null; | |
| 493 if (linkColor !is null) linkColor.dispose (); | |
| 494 linkColor = null; | |
| 495 if (disabledColor !is null) disabledColor.dispose (); | |
| 496 disabledColor = null; | |
| 497 offsets = null; | |
| 498 ids = null; | |
| 499 mnemonics = null; | |
| 500 text = null; | |
| 501 } | |
| 502 | |
| 503 /** | |
| 504 * Removes the listener from the collection of listeners who will | |
| 505 * be notified when the control is selected by the user. | |
| 506 * | |
| 507 * @param listener the listener which should no longer be notified | |
| 508 * | |
| 509 * @exception IllegalArgumentException <ul> | |
| 510 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
| 511 * </ul> | |
| 512 * @exception DWTException <ul> | |
| 513 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 514 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 515 * </ul> | |
| 516 * | |
| 517 * @see SelectionListener | |
| 518 * @see #addSelectionListener | |
| 519 */ | |
| 520 public void removeSelectionListener (SelectionListener listener) { | |
| 521 checkWidget (); | |
| 522 if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); | |
| 523 if (eventTable is null) return; | |
| 524 eventTable.unhook (DWT.Selection, listener); | |
| 525 eventTable.unhook (DWT.DefaultSelection, listener); | |
| 526 } | |
| 527 | |
| 238 | 528 String parse (String string) { |
| 82 | 529 int length_ = string.length; |
| 530 offsets = new Point[]( length_ / 4 ); | |
| 238 | 531 ids = new String[]( length_ / 4 ); |
| 82 | 532 mnemonics = new int[] ( length_ / 4 + 1 ); |
| 533 Text8 result = new Text8 (); | |
| 534 char [] buffer = string.dup; | |
| 181 | 535 |
| 82 | 536 int index = 0, state = 0, linkIndex = 0; |
| 537 int start = 0, tagStart = 0, linkStart = 0, endtagStart = 0, refStart = 0; | |
| 538 while (index < length_) { | |
| 181 | 539 int increment; |
| 540 dchar c = CharacterFirstToLower (buffer [index .. $ ], increment ); | |
| 541 | |
| 82 | 542 switch (state) { |
| 543 case 0: | |
| 544 if (c is '<') { | |
| 545 tagStart = index; | |
| 546 state++; | |
| 547 } | |
| 548 break; | |
| 549 case 1: | |
| 550 if (c is 'a') state++; | |
| 551 break; | |
| 552 case 2: | |
| 553 switch (c) { | |
| 554 case 'h': | |
| 555 state = 7; | |
| 556 break; | |
| 557 case '>': | |
| 558 linkStart = index + 1; | |
| 559 state++; | |
| 560 break; | |
| 561 default: | |
| 562 if (tango.text.Unicode.isWhitespace(c)) break; | |
| 563 else state = 13; | |
| 564 } | |
| 565 break; | |
| 566 case 3: | |
| 567 if (c is '<') { | |
| 568 endtagStart = index; | |
| 569 state++; | |
| 570 } | |
| 571 break; | |
| 572 case 4: | |
| 573 state = c is '/' ? state + 1 : 3; | |
| 574 break; | |
| 575 case 5: | |
| 576 state = c is 'a' ? state + 1 : 3; | |
| 577 break; | |
| 578 case 6: | |
| 579 if (c is '>') { | |
| 580 mnemonics [linkIndex] = parseMnemonics (buffer, start, tagStart, result); | |
| 581 int offset = result.length (); | |
| 582 parseMnemonics (buffer, linkStart, endtagStart, result); | |
| 583 offsets [linkIndex] = new Point (offset, result.length () - 1); | |
| 584 if (ids [linkIndex] is null) { | |
| 585 ids [linkIndex] = buffer[ linkStart .. endtagStart ].dup; | |
| 586 } | |
| 587 linkIndex++; | |
| 588 start = tagStart = linkStart = endtagStart = refStart = index + 1; | |
| 589 state = 0; | |
| 590 } else { | |
| 591 state = 3; | |
| 592 } | |
| 593 break; | |
| 594 case 7: | |
| 595 state = c is 'r' ? state + 1 : 0; | |
| 596 break; | |
| 597 case 8: | |
| 598 state = c is 'e' ? state + 1 : 0; | |
| 599 break; | |
| 600 case 9: | |
| 601 state = c is 'f' ? state + 1 : 0; | |
| 602 break; | |
| 603 case 10: | |
| 604 state = c is '=' ? state + 1 : 0; | |
| 605 break; | |
| 606 case 11: | |
| 607 if (c is '"') { | |
| 608 state++; | |
| 609 refStart = index + 1; | |
| 610 } else { | |
| 611 state = 0; | |
| 612 } | |
| 613 break; | |
| 614 case 12: | |
| 615 if (c is '"') { | |
| 616 ids[linkIndex] = buffer[ refStart .. index ].dup; | |
| 617 state = 2; | |
| 618 } | |
| 619 break; | |
| 620 case 13: | |
| 621 if (tango.text.Unicode.isWhitespace (c)) { | |
| 622 state = 0; | |
| 623 } else if (c is '='){ | |
| 624 state++; | |
| 625 } | |
| 626 break; | |
| 627 case 14: | |
| 628 state = c is '"' ? state + 1 : 0; | |
| 629 break; | |
| 630 case 15: | |
| 631 if (c is '"') state = 2; | |
| 632 break; | |
| 633 default: | |
| 634 state = 0; | |
| 635 break; | |
| 636 } | |
| 181 | 637 index+=increment; |
| 82 | 638 } |
| 639 if (start < length_) { | |
| 640 int tmp = parseMnemonics (buffer, start, tagStart, result); | |
| 641 int mnemonic = parseMnemonics (buffer, linkStart, index, result); | |
| 642 if (mnemonic is -1) mnemonic = tmp; | |
| 643 mnemonics [linkIndex] = mnemonic; | |
| 644 } else { | |
| 645 mnemonics [linkIndex] = -1; | |
| 646 } | |
| 647 if (offsets.length !is linkIndex) { | |
| 648 Point [] newOffsets = new Point [linkIndex]; | |
| 649 System.arraycopy (offsets, 0, newOffsets, 0, linkIndex); | |
| 650 offsets = newOffsets; | |
| 238 | 651 String [] newIDs = new String [linkIndex]; |
| 82 | 652 System.arraycopy (ids, 0, newIDs, 0, linkIndex); |
| 653 ids = newIDs; | |
| 654 int [] newMnemonics = new int [linkIndex + 1]; | |
| 655 System.arraycopy (mnemonics, 0, newMnemonics, 0, linkIndex + 1); | |
| 656 mnemonics = newMnemonics; | |
| 657 } | |
| 658 return result.toString (); | |
| 659 } | |
| 660 | |
| 661 int parseMnemonics (char[] buffer, int start, int end, Text8 result) { | |
| 662 int mnemonic = -1, index = start; | |
| 663 while (index < end) { | |
| 181 | 664 int incr = 1; |
| 665 if ( buffer[index] is '&') { | |
| 82 | 666 if (index + 1 < end && buffer [index + 1] is '&') { |
| 667 result.append (buffer [index]); | |
| 668 index++; | |
| 669 } else { | |
| 670 mnemonic = result.length(); | |
| 671 } | |
| 672 } else { | |
| 181 | 673 result.append ( firstCodePointStr( buffer [index .. $ ], incr )); |
| 82 | 674 } |
| 181 | 675 index+=incr; |
| 82 | 676 } |
| 677 return mnemonic; | |
| 678 } | |
| 679 | |
|
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680 override int setBounds(int x, int y, int width, int height, bool move, bool resize) { |
| 82 | 681 int result = super.setBounds (x, y, width,height, move, resize); |
| 682 if ((result & RESIZED) !is 0) { | |
| 683 layout.setWidth (width > 0 ? width : -1); | |
| 684 redraw (); | |
| 685 } | |
| 686 return result; | |
| 687 } | |
| 688 | |
|
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689 override void setFontDescription (PangoFontDescription* font) { |
| 82 | 690 super.setFontDescription (font); |
| 691 layout.setFont (Font.gtk_new (display, font)); | |
| 692 } | |
| 693 | |
| 694 /** | |
| 695 * Sets the receiver's text. | |
| 696 * <p> | |
| 697 * The string can contain both regular text and hyperlinks. A hyperlink | |
| 698 * is delimited by an anchor tag, <A> and </A>. Within an | |
| 699 * anchor, a single HREF attribute is supported. When a hyperlink is | |
| 700 * selected, the text field of the selection event contains either the | |
| 701 * text of the hyperlink or the value of its HREF, if one was specified. | |
| 702 * In the rare case of identical hyperlinks within the same string, the | |
| 703 * HREF tag can be used to distinguish between them. The string may | |
| 704 * include the mnemonic character and line delimiters. | |
| 705 * </p> | |
| 706 * | |
| 707 * @param string the new text | |
| 708 * | |
| 709 * @exception IllegalArgumentException <ul> | |
| 710 * <li>ERROR_NULL_ARGUMENT - if the text is null</li> | |
| 711 * </ul> | |
| 712 * @exception DWTException <ul> | |
| 713 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 714 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 715 * </ul> | |
| 716 */ | |
| 238 | 717 public void setText (String string) { |
| 82 | 718 checkWidget (); |
| 719 if (string is null) error (DWT.ERROR_NULL_ARGUMENT); | |
| 181 | 720 if (string.equals(text)) return; |
| 82 | 721 text = string; |
| 722 layout.setText (parse (string)); | |
| 723 focusIndex = offsets.length > 0 ? 0 : -1; | |
| 724 selection.x = selection.y = -1; | |
| 725 bool enabled = (state & DISABLED) is 0; | |
| 726 TextStyle linkStyle = new TextStyle (null, enabled ? linkColor : disabledColor, null); | |
| 727 linkStyle.underline = true; | |
| 728 for (int i = 0; i < offsets.length; i++) { | |
| 729 Point point = offsets [i]; | |
| 730 layout.setStyle (linkStyle, point.x, point.y); | |
| 731 } | |
| 732 TextStyle mnemonicStyle = new TextStyle (null, null, null); | |
| 733 mnemonicStyle.underline = true; | |
| 734 for (int i = 0; i < mnemonics.length; i++) { | |
| 735 int mnemonic = mnemonics [i]; | |
| 736 if (mnemonic !is -1) { | |
| 737 layout.setStyle (mnemonicStyle, mnemonic, mnemonic); | |
| 738 } | |
| 739 } | |
| 740 redraw (); | |
| 741 } | |
| 742 | |
|
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|
743 override void showWidget () { |
| 82 | 744 super.showWidget (); |
| 745 fixStyle (handle); | |
| 746 } | |
| 747 | |
| 748 override int traversalCode (int key, GdkEventKey* event) { | |
| 749 if (offsets.length is 0) return 0; | |
| 750 int bits = super.traversalCode (key, event); | |
| 751 if (key is OS.GDK_Tab && focusIndex < offsets.length - 1) { | |
| 752 return bits & ~DWT.TRAVERSE_TAB_NEXT; | |
| 753 } | |
| 754 if (key is OS.GDK_ISO_Left_Tab && focusIndex > 0) { | |
| 755 return bits & ~DWT.TRAVERSE_TAB_PREVIOUS; | |
| 756 } | |
| 757 return bits; | |
| 758 } | |
| 759 } |