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 | #ifdef HEADLESS |
| 27 | #error This file should not be included in headless library |
| 28 | #endif |
| 29 | |
| 30 | #include "awt_p.h" |
| 31 | #include "java_awt_List.h" |
| 32 | #include "java_awt_AWTEvent.h" |
| 33 | #include "sun_awt_motif_MListPeer.h" |
| 34 | #include "sun_awt_motif_MComponentPeer.h" |
| 35 | #include "java_awt_event_MouseWheelEvent.h" |
| 36 | #include "canvas.h" |
| 37 | |
| 38 | #include "awt_Component.h" |
| 39 | |
| 40 | #include "multi_font.h" |
| 41 | #include <jni.h> |
| 42 | #include <jni_util.h> |
| 43 | |
| 44 | extern struct MComponentPeerIDs mComponentPeerIDs; |
| 45 | extern struct ComponentIDs componentIDs; |
| 46 | extern AwtGraphicsConfigDataPtr |
| 47 | copyGraphicsConfigToPeer(JNIEnv *env, jobject this); |
| 48 | |
| 49 | |
| 50 | /* |
| 51 | * client_data = MListPeer instance |
| 52 | */ |
| 53 | static void |
| 54 | Slist_callback(Widget w, XtPointer client_data, XtPointer call_data) |
| 55 | { |
| 56 | JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2); |
| 57 | XmListCallbackStruct *cbs = (XmListCallbackStruct *) call_data; |
| 58 | |
| 59 | switch (cbs->reason) { |
| 60 | case XmCR_DEFAULT_ACTION: { |
| 61 | ConvertEventTimeAndModifiers converted; |
| 62 | |
| 63 | awt_util_convertEventTimeAndModifiers(cbs->event, &converted); |
| 64 | |
| 65 | if (cbs->event->type == KeyPress) { |
| 66 | /* When Default action comes from keyboard, no notification |
| 67 | * is given by motif that a selection has been made, even |
| 68 | * though, internally, the item will now be selected regardless |
| 69 | * of whether or not it was previously selected. ( on mouse |
| 70 | * generated DEFAULT ACTIONS the XmCR_BROWSE_SELECT is |
| 71 | * generated first ). |
| 72 | */ |
| 73 | JNU_CallMethodByName(env, NULL, (jobject) client_data |
| 74 | ,"handleListChanged" |
| 75 | ,"(I)V" |
| 76 | ,(cbs->item_position - 1)); |
| 77 | if ((*env)->ExceptionOccurred(env)) { |
| 78 | (*env)->ExceptionDescribe(env); |
| 79 | (*env)->ExceptionClear(env); |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | JNU_CallMethodByName(env, NULL, (jobject) client_data |
| 84 | ,"action" |
| 85 | ,"(IJI)V" |
| 86 | ,(cbs->item_position - 1) |
| 87 | ,converted.when |
| 88 | ,converted.modifiers); |
| 89 | if ((*env)->ExceptionOccurred(env)) { |
| 90 | (*env)->ExceptionDescribe(env); |
| 91 | (*env)->ExceptionClear(env); |
| 92 | } |
| 93 | break; |
| 94 | } |
| 95 | case XmCR_BROWSE_SELECT: |
| 96 | JNU_CallMethodByName(env, NULL, (jobject) client_data |
| 97 | ,"handleListChanged" |
| 98 | ,"(I)V" |
| 99 | ,(cbs->item_position - 1)); |
| 100 | if ((*env)->ExceptionOccurred(env)) { |
| 101 | (*env)->ExceptionDescribe(env); |
| 102 | (*env)->ExceptionClear(env); |
| 103 | } |
| 104 | break; |
| 105 | |
| 106 | case XmCR_MULTIPLE_SELECT: |
| 107 | JNU_CallMethodByName(env, NULL, (jobject) client_data |
| 108 | ,"handleListChanged" |
| 109 | ,"(I)V" |
| 110 | ,(cbs->item_position - 1)); |
| 111 | if ((*env)->ExceptionOccurred(env)) { |
| 112 | (*env)->ExceptionDescribe(env); |
| 113 | (*env)->ExceptionClear(env); |
| 114 | } |
| 115 | break; |
| 116 | |
| 117 | default: |
| 118 | break; |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | /* |
| 123 | * Class: sun_awt_motif_MListPeer |
| 124 | * Method: create |
| 125 | * Signature: (Lsun/awt/motif/MComponentPeer;)V |
| 126 | */ |
| 127 | JNIEXPORT void JNICALL Java_sun_awt_motif_MListPeer_create |
| 128 | (JNIEnv *env, jobject this, jobject parent) |
| 129 | { |
| 130 | Cardinal argc; |
| 131 | #define MAX_ARGC 40 |
| 132 | Arg args[MAX_ARGC]; |
| 133 | struct ComponentData *wdata; |
| 134 | struct ListData *sdata; |
| 135 | Pixel bg; |
| 136 | jobject globalRef = awtJNI_CreateAndSetGlobalRef(env, this); |
| 137 | AwtGraphicsConfigDataPtr adata; |
| 138 | |
| 139 | AWT_LOCK(); |
| 140 | |
| 141 | adata = copyGraphicsConfigToPeer(env, this); |
| 142 | |
| 143 | if (JNU_IsNull(env, parent)) { |
| 144 | JNU_ThrowNullPointerException(env, "NullPointerException"); |
| 145 | AWT_UNLOCK(); |
| 146 | |
| 147 | return; |
| 148 | } |
| 149 | wdata = (struct ComponentData *) JNU_GetLongFieldAsPtr(env,parent,mComponentPeerIDs.pData); |
| 150 | |
| 151 | if (wdata == NULL) { |
| 152 | JNU_ThrowNullPointerException(env, "NullPointerException"); |
| 153 | AWT_UNLOCK(); |
| 154 | return; |
| 155 | } |
| 156 | sdata = (struct ListData *) calloc(1, sizeof(struct ListData)); |
| 157 | |
| 158 | JNU_SetLongFieldFromPtr(env,this,mComponentPeerIDs.pData,sdata); |
| 159 | if (sdata == NULL) { |
| 160 | JNU_ThrowOutOfMemoryError(env, "OutOfMemoryError"); |
| 161 | AWT_UNLOCK(); |
| 162 | return; |
| 163 | } |
| 164 | XtVaGetValues(wdata->widget, XmNbackground, &bg, NULL); |
| 165 | argc = 0; |
| 166 | XtSetArg(args[argc], XmNrecomputeSize, False); |
| 167 | argc++; |
| 168 | XtSetArg(args[argc], XmNbackground, bg); |
| 169 | argc++; |
| 170 | XtSetArg(args[argc], XmNlistSizePolicy, XmCONSTANT); |
| 171 | argc++; |
| 172 | XtSetArg(args[argc], XmNx, 0); |
| 173 | argc++; |
| 174 | XtSetArg(args[argc], XmNy, 0); |
| 175 | argc++; |
| 176 | XtSetArg(args[argc], XmNmarginTop, 0); |
| 177 | argc++; |
| 178 | XtSetArg(args[argc], XmNmarginBottom, 0); |
| 179 | argc++; |
| 180 | XtSetArg(args[argc], XmNmarginLeft, 0); |
| 181 | argc++; |
| 182 | XtSetArg(args[argc], XmNmarginRight, 0); |
| 183 | argc++; |
| 184 | XtSetArg(args[argc], XmNmarginHeight, 0); |
| 185 | argc++; |
| 186 | XtSetArg(args[argc], XmNmarginWidth, 0); |
| 187 | argc++; |
| 188 | XtSetArg(args[argc], XmNlistMarginHeight, 0); |
| 189 | argc++; |
| 190 | XtSetArg(args[argc], XmNlistMarginWidth, 0); |
| 191 | argc++; |
| 192 | XtSetArg(args[argc], XmNscrolledWindowMarginWidth, 0); |
| 193 | argc++; |
| 194 | XtSetArg(args[argc], XmNscrolledWindowMarginHeight, 0); |
| 195 | argc++; |
| 196 | XtSetArg(args[argc], XmNuserData, (XtPointer) globalRef); |
| 197 | argc++; |
| 198 | XtSetArg (args[argc], XmNscreen, |
| 199 | ScreenOfDisplay(awt_display, |
| 200 | adata->awt_visInfo.screen)); |
| 201 | argc++; |
| 202 | |
| 203 | DASSERT(!(argc > MAX_ARGC)); |
| 204 | sdata->list = XmCreateScrolledList(wdata->widget, |
| 205 | "slist", |
| 206 | args, |
| 207 | argc); |
| 208 | |
| 209 | sdata->comp.widget = XtParent(sdata->list); |
| 210 | XtSetMappedWhenManaged(sdata->comp.widget, False); |
| 211 | XtAddCallback(sdata->list, |
| 212 | XmNdefaultActionCallback, |
| 213 | Slist_callback, |
| 214 | (XtPointer) globalRef); |
| 215 | XtAddEventHandler(sdata->list, FocusChangeMask, |
| 216 | True, awt_canvas_event_handler, globalRef); |
| 217 | |
| 218 | awt_addWidget(sdata->list, sdata->comp.widget, globalRef, |
| 219 | java_awt_AWTEvent_KEY_EVENT_MASK | |
| 220 | java_awt_AWTEvent_MOUSE_EVENT_MASK | |
| 221 | java_awt_AWTEvent_MOUSE_MOTION_EVENT_MASK); |
| 222 | |
| 223 | XtManageChild(sdata->list); |
| 224 | XtManageChild(sdata->comp.widget); |
| 225 | |
| 226 | AWT_UNLOCK(); |
| 227 | } |
| 228 | |
| 229 | /* |
| 230 | * Class: sun_awt_motif_MListPeer |
| 231 | * Method: setMultipleSelections |
| 232 | * Signature: (Z)V |
| 233 | */ |
| 234 | JNIEXPORT void JNICALL Java_sun_awt_motif_MListPeer_setMultipleSelections |
| 235 | (JNIEnv *env, jobject this, jboolean v) |
| 236 | { |
| 237 | struct ListData *sdata; |
| 238 | jobject globalRef; |
| 239 | int32_t selPos; |
| 240 | Boolean selected; |
| 241 | |
| 242 | AWT_LOCK(); |
| 243 | |
| 244 | sdata = (struct ListData *) |
| 245 | JNU_GetLongFieldAsPtr(env, this, mComponentPeerIDs.pData); |
| 246 | if (sdata == NULL) { |
| 247 | JNU_ThrowNullPointerException(env, "NullPointerException"); |
| 248 | AWT_UNLOCK(); |
| 249 | return; |
| 250 | } |
| 251 | globalRef = (jobject) |
| 252 | JNU_GetLongFieldAsPtr(env, this, mComponentPeerIDs.jniGlobalRef); |
| 253 | if (v == JNI_FALSE) { |
| 254 | XtVaSetValues(sdata->list, |
| 255 | XmNselectionPolicy, XmBROWSE_SELECT, |
| 256 | NULL); |
| 257 | XtRemoveCallback(sdata->list, |
| 258 | XmNmultipleSelectionCallback, |
| 259 | Slist_callback, |
| 260 | (XtPointer) globalRef); |
| 261 | XtAddCallback(sdata->list, |
| 262 | XmNbrowseSelectionCallback, |
| 263 | Slist_callback, |
| 264 | (XtPointer) globalRef); |
| 265 | |
| 266 | // If we change the selection mode from multiple to single |
| 267 | // we need to decide what the item should be selected: |
| 268 | // If a selected item has the location cursor, only that |
| 269 | // item will remain selected. If no selected item has the |
| 270 | // location cursor, all items will be deselected. |
| 271 | selPos = XmListGetKbdItemPos(sdata->list); |
| 272 | selected = XmListPosSelected(sdata->list, selPos); |
| 273 | XmListDeselectAllItems(sdata->list); |
| 274 | if (selected) { |
| 275 | Java_sun_awt_motif_MListPeer_select(env, this, selPos-1); |
| 276 | } |
| 277 | |
| 278 | } else { |
| 279 | XtVaSetValues(sdata->list, |
| 280 | XmNselectionPolicy, XmMULTIPLE_SELECT, |
| 281 | NULL); |
| 282 | XtRemoveCallback(sdata->list, |
| 283 | XmNbrowseSelectionCallback, |
| 284 | Slist_callback, |
| 285 | (XtPointer) globalRef); |
| 286 | XtAddCallback(sdata->list, |
| 287 | XmNmultipleSelectionCallback, |
| 288 | Slist_callback, |
| 289 | (XtPointer) globalRef); |
| 290 | } |
| 291 | AWT_UNLOCK(); |
| 292 | } |
| 293 | |
| 294 | /* |
| 295 | * Class: sun_awt_motif_MListPeer |
| 296 | * Method: setBackground |
| 297 | * Signature: (Ljava/awt/Color;)V |
| 298 | */ |
| 299 | |
| 300 | JNIEXPORT void JNICALL Java_sun_awt_motif_MListPeer_setBackground |
| 301 | (JNIEnv *env, jobject this, jobject c) |
| 302 | { |
| 303 | struct ListData *ldata; |
| 304 | Pixel color; |
| 305 | |
| 306 | if (JNU_IsNull(env, c)) { |
| 307 | JNU_ThrowNullPointerException(env, "NullPointerException"); |
| 308 | return; |
| 309 | } |
| 310 | AWT_LOCK(); |
| 311 | ldata = (struct ListData *) |
| 312 | JNU_GetLongFieldAsPtr(env,this, mComponentPeerIDs.pData); |
| 313 | if (ldata == NULL || ldata->list == NULL) { |
| 314 | JNU_ThrowNullPointerException(env, "NullPointerException"); |
| 315 | AWT_UNLOCK(); |
| 316 | return; |
| 317 | } |
| 318 | color = awtJNI_GetColor(env, c); |
| 319 | XtVaSetValues(ldata->list, |
| 320 | XmNbackground, color, |
| 321 | NULL); |
| 322 | AWT_FLUSH_UNLOCK(); |
| 323 | } |
| 324 | |
| 325 | /* |
| 326 | * Class: sun_awt_motif_MListPeer |
| 327 | * Method: isSelected |
| 328 | * Signature: (I)Z |
| 329 | */ |
| 330 | JNIEXPORT jboolean JNICALL Java_sun_awt_motif_MListPeer_isSelected |
| 331 | (JNIEnv *env, jobject this, jint pos) |
| 332 | { |
| 333 | struct ListData *sdata; |
| 334 | |
| 335 | AWT_LOCK(); |
| 336 | |
| 337 | sdata = (struct ListData *) JNU_GetLongFieldAsPtr(env,this,mComponentPeerIDs.pData); |
| 338 | if (sdata == NULL) { |
| 339 | JNU_ThrowNullPointerException(env, "NullPointerException"); |
| 340 | AWT_UNLOCK(); |
| 341 | return JNI_FALSE; |
| 342 | } |
| 343 | pos++; |
| 344 | if (XmListPosSelected(sdata->list, pos) == True) { |
| 345 | AWT_UNLOCK(); |
| 346 | return JNI_TRUE; |
| 347 | } else { |
| 348 | AWT_UNLOCK(); |
| 349 | return JNI_FALSE; |
| 350 | } |
| 351 | } |
| 352 | |
| 353 | /* |
| 354 | * Class: sun_awt_motif_MListPeer |
| 355 | * Method: addItem |
| 356 | * Signature: (Ljava/lang/String;I)V |
| 357 | */ |
| 358 | JNIEXPORT void JNICALL Java_sun_awt_motif_MListPeer_addItem |
| 359 | (JNIEnv *env, jobject this, jstring item, jint index) |
| 360 | { |
| 361 | XmString im; |
| 362 | struct ListData *sdata; |
| 363 | jobject font; |
| 364 | |
| 365 | /* |
| 366 | * Note: |
| 367 | * There used to be code in this function to fix: |
| 368 | * 4067355 size of listbox depends on when pack() is called (solaris) |
| 369 | * The fix (for jdk1.1.7) involved unmapping the List widget before the add |
| 370 | * is done and resizing/remapping it after the add. This causes significant |
| 371 | * performance degradation if addItem() is called a lot. A bug was filed |
| 372 | * on this performance problem: 4117288 |
| 373 | * The fix was backed out after testing that: |
| 374 | * - the problem reported in 4067355 was no longer reproducible |
| 375 | * - the performance problem is gone |
| 376 | */ |
| 377 | |
| 378 | AWT_LOCK(); |
| 379 | if (JNU_IsNull(env, item)) { |
| 380 | JNU_ThrowNullPointerException(env, "NullPointerException"); |
| 381 | AWT_UNLOCK(); |
| 382 | return; |
| 383 | } |
| 384 | sdata = (struct ListData *) JNU_GetLongFieldAsPtr(env,this,mComponentPeerIDs.pData); |
| 385 | if (sdata == NULL) { |
| 386 | JNU_ThrowNullPointerException(env, "NullPointerException"); |
| 387 | AWT_UNLOCK(); |
| 388 | return; |
| 389 | } |
| 390 | font = awtJNI_GetFont(env, this); |
| 391 | |
| 392 | if (awtJNI_IsMultiFont(env, font)) { |
| 393 | im = awtJNI_MakeMultiFontString(env, item, font); |
| 394 | } else { |
| 395 | char *temp; |
| 396 | |
| 397 | temp = (char *) JNU_GetStringPlatformChars(env, item, NULL); |
| 398 | im = XmStringCreateLocalized(temp); |
| 399 | JNU_ReleaseStringPlatformChars(env, item, (const char *)temp); |
| 400 | } |
| 401 | |
| 402 | /* motif uses 1-based indeces for the list operations with 0 */ |
| 403 | /* referring to the last item on the list. Thus if index is -1 */ |
| 404 | /* then we'll get the right effect of adding to the end of the */ |
| 405 | /* list. */ |
| 406 | index++; |
| 407 | |
| 408 | XmListAddItemUnselected(sdata->list, im, index); |
| 409 | XmStringFree(im); |
| 410 | |
| 411 | AWT_UNLOCK(); |
| 412 | } |
| 413 | |
| 414 | /* |
| 415 | * Class: sun_awt_motif_MListPeer |
| 416 | * Method: delItems |
| 417 | * Signature: (II)V |
| 418 | */ |
| 419 | JNIEXPORT void JNICALL Java_sun_awt_motif_MListPeer_delItems |
| 420 | (JNIEnv *env, jobject this, jint start, jint end) |
| 421 | { |
| 422 | struct ListData *sdata; |
| 423 | Boolean was_mapped; |
| 424 | jobject target; |
| 425 | Position width, height; |
| 426 | int32_t itemCount; |
| 427 | |
| 428 | AWT_LOCK(); |
| 429 | target = (*env)->GetObjectField(env, this, mComponentPeerIDs.target); |
| 430 | if (JNU_IsNull(env, target)) { |
| 431 | JNU_ThrowNullPointerException(env, "NullPointerException"); |
| 432 | AWT_UNLOCK(); |
| 433 | return; |
| 434 | } |
| 435 | sdata = (struct ListData *) JNU_GetLongFieldAsPtr(env,this,mComponentPeerIDs.pData); |
| 436 | if (sdata == NULL) { |
| 437 | JNU_ThrowNullPointerException(env, "NullPointerException"); |
| 438 | AWT_UNLOCK(); |
| 439 | return; |
| 440 | } |
| 441 | /* [jk] catch bogus indexes (Sun bug) */ |
| 442 | XtVaGetValues(sdata->list, XmNitemCount, &itemCount, NULL); |
| 443 | if (itemCount == 0) { |
| 444 | AWT_UNLOCK(); |
| 445 | return; |
| 446 | } |
| 447 | if (start > itemCount) { |
| 448 | start = itemCount; |
| 449 | } |
| 450 | if (end > itemCount) { |
| 451 | end = itemCount; |
| 452 | } |
| 453 | start++; |
| 454 | end++; |
| 455 | |
| 456 | XtVaGetValues(sdata->comp.widget, XmNmappedWhenManaged, &was_mapped, NULL); |
| 457 | |
| 458 | /* If it was visible, then make it invisible while we update */ |
| 459 | if (was_mapped) { |
| 460 | XtSetMappedWhenManaged(sdata->comp.widget, False); |
| 461 | } |
| 462 | |
| 463 | if (start == end) { |
| 464 | XmListDeletePos(sdata->list, start); |
| 465 | } else { |
| 466 | XmListDeleteItemsPos(sdata->list, end - start + 1, start); |
| 467 | } |
| 468 | |
| 469 | width = (*env)->GetIntField(env, target, componentIDs.width); |
| 470 | height = (*env)->GetIntField(env, target, componentIDs.height); |
| 471 | XtVaSetValues(sdata->comp.widget, |
| 472 | XmNwidth, (width > 1) ? width-1 : 1, |
| 473 | XmNheight, (height > 1) ? height-1 : 1, |
| 474 | NULL); |
| 475 | XtVaSetValues(sdata->comp.widget, |
| 476 | XmNwidth, (width > 0) ? width : 1, |
| 477 | XmNheight, (height > 0) ? height : 1, |
| 478 | NULL); |
| 479 | /* If it was visible, then make it visible again once updated */ |
| 480 | if (was_mapped) { |
| 481 | XtSetMappedWhenManaged(sdata->comp.widget, True); |
| 482 | } |
| 483 | |
| 484 | |
| 485 | AWT_UNLOCK(); |
| 486 | } |
| 487 | |
| 488 | /* |
| 489 | * Class: sun_awt_motif_MListPeer |
| 490 | * Method: pSelect |
| 491 | * Signature: (I)V |
| 492 | */ |
| 493 | JNIEXPORT void JNICALL Java_sun_awt_motif_MListPeer_select |
| 494 | (JNIEnv *env, jobject this, jint pos) |
| 495 | { |
| 496 | struct ListData *sdata; |
| 497 | |
| 498 | AWT_LOCK(); |
| 499 | sdata = (struct ListData *) JNU_GetLongFieldAsPtr(env,this,mComponentPeerIDs.pData); |
| 500 | if (sdata == NULL) { |
| 501 | JNU_ThrowNullPointerException(env, "NullPointerException"); |
| 502 | AWT_UNLOCK(); |
| 503 | return; |
| 504 | } |
| 505 | pos++; |
| 506 | XmListSelectPos(sdata->list, pos, False); |
| 507 | AWT_UNLOCK(); |
| 508 | } |
| 509 | |
| 510 | /* |
| 511 | * Class: sun_awt_motif_MListPeer |
| 512 | * Method: pDeselect |
| 513 | * Signature: (I)V |
| 514 | */ |
| 515 | JNIEXPORT void JNICALL Java_sun_awt_motif_MListPeer_deselect |
| 516 | (JNIEnv *env, jobject this, jint pos) |
| 517 | { |
| 518 | struct ListData *sdata; |
| 519 | |
| 520 | AWT_LOCK(); |
| 521 | sdata = (struct ListData *) JNU_GetLongFieldAsPtr(env,this,mComponentPeerIDs.pData); |
| 522 | if (sdata == NULL) { |
| 523 | JNU_ThrowNullPointerException(env, "NullPointerException"); |
| 524 | AWT_UNLOCK(); |
| 525 | return; |
| 526 | } |
| 527 | pos++; |
| 528 | XmListDeselectPos(sdata->list, pos); |
| 529 | AWT_UNLOCK(); |
| 530 | } |
| 531 | |
| 532 | /* |
| 533 | * Class: sun_awt_motif_MListPeer |
| 534 | * Method: makeVisible |
| 535 | * Signature: (I)V |
| 536 | */ |
| 537 | JNIEXPORT void JNICALL Java_sun_awt_motif_MListPeer_makeVisible |
| 538 | (JNIEnv *env, jobject this, jint pos) |
| 539 | { |
| 540 | int32_t top, visible; |
| 541 | struct ListData *sdata; |
| 542 | |
| 543 | AWT_LOCK(); |
| 544 | sdata = (struct ListData *) JNU_GetLongFieldAsPtr(env,this,mComponentPeerIDs.pData); |
| 545 | if (sdata == NULL) { |
| 546 | JNU_ThrowNullPointerException(env, "NullPointerException"); |
| 547 | AWT_UNLOCK(); |
| 548 | return; |
| 549 | } |
| 550 | XtVaGetValues(sdata->list, |
| 551 | XmNtopItemPosition, &top, |
| 552 | XmNvisibleItemCount, &visible, |
| 553 | NULL); |
| 554 | pos++; |
| 555 | if (pos < top) { |
| 556 | XmListSetPos(sdata->list, pos); |
| 557 | } else { |
| 558 | XmListSetBottomPos(sdata->list, pos); |
| 559 | } |
| 560 | |
| 561 | AWT_UNLOCK(); |
| 562 | } |
| 563 | |
| 564 | /* |
| 565 | * Class: sun_awt_motif_MListPeer |
| 566 | * Method: nativeHandleMouseWheel |
| 567 | * Signature: (III)V |
| 568 | */ |
| 569 | JNIEXPORT void JNICALL Java_sun_awt_motif_MListPeer_nativeHandleMouseWheel |
| 570 | (JNIEnv *env, jobject this, jint scrollType, jint scrollAmt, jint wheelAmt) |
| 571 | { |
| 572 | struct ListData *ldata; |
| 573 | Widget list = NULL; |
| 574 | Widget scroll = NULL; |
| 575 | |
| 576 | AWT_LOCK(); |
| 577 | ldata = (struct ListData *) |
| 578 | JNU_GetLongFieldAsPtr(env, this, mComponentPeerIDs.pData); |
| 579 | if (ldata == NULL || ldata->comp.widget == NULL) { |
| 580 | JNU_ThrowNullPointerException(env, "NullPointerException"); |
| 581 | AWT_UNLOCK(); |
| 582 | return; |
| 583 | } |
| 584 | // get the List widget |
| 585 | list = ldata->list; |
| 586 | if (list == NULL) { |
| 587 | AWT_UNLOCK(); |
| 588 | return; |
| 589 | } |
| 590 | |
| 591 | // get the ScrolledWindow |
| 592 | scroll = XtParent(list); |
| 593 | if (scroll == NULL) { |
| 594 | AWT_UNLOCK(); |
| 595 | return; |
| 596 | } |
| 597 | |
| 598 | awt_util_do_wheel_scroll(scroll, scrollType, scrollAmt, wheelAmt); |
| 599 | AWT_UNLOCK(); |
| 600 | } |