1 /* 2 * Copyright (c) 1996, 2018, Oracle and/or its affiliates. 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 #include "awt_List.h" 27 #include "awt_Canvas.h" 28 #include "awt_Dimension.h" 29 #include "awt_Toolkit.h" 30 #include "awt_Window.h" 31 32 #include "ComCtl32Util.h" 33 34 /* IMPORTANT! Read the README.JNI file for notes on JNI converted AWT code. 35 */ 36 37 /***********************************************************************/ 38 // struct for _AddItems() method 39 struct AddItemsStruct { 40 jobject list; 41 jobjectArray items; 42 jint index; 43 jint width; 44 }; 45 // struct for _DelItems() method 46 struct DelItemsStruct { 47 jobject list; 48 jint start, end; 49 }; 50 // struct for _IsSelected(), _Select(), _Deselect() and _MakeVisible() methods 51 struct SelectElementStruct { 52 jobject list; 53 jint index; 54 }; 55 // struct for _SetMultipleSelections() method 56 struct SetMultipleSelectionsStruct { 57 jobject list; 58 jboolean on; 59 }; 60 /************************************************************************ 61 * AwtList methods 62 */ 63 64 AwtList::AwtList() { 65 isMultiSelect = FALSE; 66 isWrapperPrint = FALSE; 67 } 68 69 AwtList::~AwtList() 70 { 71 } 72 73 LPCTSTR AwtList::GetClassName() { 74 return TEXT("LISTBOX"); 75 } 76 77 /* Create a new AwtList object and window. */ 78 AwtList* AwtList::Create(jobject peer, jobject parent) 79 { 80 JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2); 81 82 jobject target = NULL; 83 AwtList* c = NULL; 84 85 try { 86 if (env->EnsureLocalCapacity(1) < 0) { 87 return NULL; 88 } 89 90 PDATA pData; 91 AwtCanvas* awtParent; 92 93 JNI_CHECK_PEER_GOTO(parent, done); 94 awtParent = (AwtCanvas*)pData; 95 96 /* target is Hjava_awt_List * */ 97 target = env->GetObjectField(peer, AwtObject::targetID); 98 JNI_CHECK_NULL_GOTO(target, "null target", done); 99 100 c = new AwtList(); 101 102 { 103 104 /* 105 * NOTE: WS_CLIPCHILDREN is excluded so that repaint requests 106 * from Java will pass through the wrap to the native listbox. 107 */ 108 DWORD wrapStyle = WS_CHILD | WS_CLIPSIBLINGS; 109 DWORD wrapExStyle = 0; 110 111 DWORD style = WS_CHILD | WS_CLIPSIBLINGS | WS_VSCROLL | WS_HSCROLL | 112 LBS_NOINTEGRALHEIGHT | LBS_NOTIFY | LBS_OWNERDRAWFIXED; 113 DWORD exStyle = WS_EX_CLIENTEDGE; 114 115 /* 116 * NOTE: WS_VISIBLE is always set for the listbox. Listbox 117 * visibility is controlled by toggling the wrap's WS_VISIBLE bit. 118 */ 119 style |= WS_VISIBLE; 120 121 if (GetRTL()) { 122 exStyle |= WS_EX_RIGHT | WS_EX_LEFTSCROLLBAR; 123 if (GetRTLReadingOrder()) 124 exStyle |= WS_EX_RTLREADING; 125 } 126 127 jint x = env->GetIntField(target, AwtComponent::xID); 128 jint y = env->GetIntField(target, AwtComponent::yID); 129 jint width = env->GetIntField(target, AwtComponent::widthID); 130 jint height = env->GetIntField(target, AwtComponent::heightID); 131 132 c->CreateHWnd(env, L"", style, exStyle, 133 x, y, width, height, 134 awtParent->GetHWnd(), 135 NULL, 136 ::GetSysColor(COLOR_WINDOWTEXT), 137 ::GetSysColor(COLOR_WINDOW), 138 peer 139 ); 140 141 /* suppress inheriting awtParent's color. */ 142 c->m_backgroundColorSet = TRUE; 143 c->UpdateBackground(env, target); 144 } 145 } catch (...) { 146 env->DeleteLocalRef(target); 147 throw; 148 } 149 150 done: 151 env->DeleteLocalRef(target); 152 return c; 153 } 154 155 void AwtList::SetDragCapture(UINT flags) 156 { 157 // don't want to interfere with other controls 158 if (::GetCapture() == NULL) { 159 ::SetCapture(GetListHandle()); 160 } 161 } 162 163 void AwtList::ReleaseDragCapture(UINT flags) 164 { 165 if ((::GetCapture() == GetListHandle()) && ((flags & ALL_MK_BUTTONS) == 0)) { 166 ::ReleaseCapture(); 167 } 168 } 169 170 void AwtList::Reshape(int x, int y, int w, int h) 171 { 172 AwtComponent::Reshape(x, y, w, h); 173 174 /* 175 HWND hList = GetListHandle(); 176 if (hList != NULL) { 177 long flags = SWP_NOACTIVATE | SWP_NOZORDER | SWP_NOCOPYBITS; 178 /* 179 * Fix for bug 4046446. 180 * / 181 SetWindowPos(hList, 0, 0, 0, w, h, flags); 182 } 183 */ 184 } 185 186 //Netscape : Override the AwtComponent method so we can set the item height 187 //for each item in the list. Modified by echawkes to avoid race condition. 188 189 void AwtList::SetFont(AwtFont* font) 190 { 191 DASSERT(font != NULL); 192 if (font->GetAscent() < 0) 193 { 194 AwtFont::SetupAscent(font); 195 } 196 HANDLE hFont = font->GetHFont(); 197 SendListMessage(WM_SETFONT, (WPARAM)hFont, MAKELPARAM(FALSE, 0)); 198 199 HDC hDC = ::GetDC(GetHWnd()); 200 201 TEXTMETRIC tm; 202 VERIFY(::SelectObject(hDC, hFont) != NULL); 203 VERIFY(::GetTextMetrics(hDC, &tm)); 204 205 ::ReleaseDC(GetHWnd(), hDC); 206 207 long h = tm.tmHeight + tm.tmExternalLeading; 208 // Listbox is LBS_OWNERDRAWFIXED so the items have the same height 209 VERIFY(SendListMessage(LB_SETITEMHEIGHT, 0, MAKELPARAM(h, 0)) != LB_ERR); 210 VERIFY(::RedrawWindow(GetHWnd(), NULL, NULL, RDW_INVALIDATE |RDW_FRAME |RDW_ERASE)); 211 } 212 213 void AwtList::SetMultiSelect(BOOL ms) { 214 if (ms == isMultiSelect) { 215 return; 216 } 217 218 JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2); 219 220 /* Copy current box's contents to string array */ 221 const int nCount = GetCount(); 222 LPTSTR * strings = new LPTSTR[nCount]; 223 int i; 224 225 for(i = 0; i < nCount; i++) { 226 LRESULT len = SendListMessage(LB_GETTEXTLEN, i); 227 LPTSTR text = NULL; 228 try { 229 text = new TCHAR[len + 1]; 230 } catch (std::bad_alloc&) { 231 // free char * already allocated 232 for (int j = 0; j < i; j++) { 233 delete [] strings[j]; 234 } 235 delete [] strings; 236 throw; 237 } 238 239 VERIFY(SendListMessage(LB_GETTEXT, i, (LPARAM)text) != LB_ERR); 240 strings[i] = text; 241 } 242 243 // index for selected item after multi-select mode change 244 int toSelect = static_cast<int>(SendListMessage(LB_GETCURSEL)); 245 if (!isMultiSelect) 246 { 247 // MSDN: for single-select lists LB_GETCURSEL returns 248 // index of selected item or LB_ERR if no item is selected 249 if (toSelect == LB_ERR) 250 { 251 toSelect = -1; 252 } 253 } 254 else 255 { 256 // MSDN: for multi-select lists LB_GETCURSEL returns index 257 // of the focused item or 0 if no items are selected; if 258 // some item has focus and is not selected then LB_GETCURSEL 259 // return its index, so we need IsItemSelected too 260 if ((toSelect == LB_ERR) || 261 (SendListMessage(LB_GETSELCOUNT) == 0) || 262 (IsItemSelected(toSelect) == 0)) 263 { 264 toSelect = -1; 265 } 266 } 267 268 isMultiSelect = ms; 269 270 HWND parentHWnd = GetParent()->GetHWnd(); 271 272 /* Save old list box's attributes */ 273 RECT rect; 274 GetWindowRect(GetListHandle(), &rect); 275 MapWindowPoints(0, parentHWnd, (LPPOINT)&rect, 2); 276 277 HANDLE font = (HANDLE)SendListMessage(WM_GETFONT); 278 LRESULT itemHeight = SendListMessage(LB_GETITEMHEIGHT, 0); 279 DWORD style = ::GetWindowLong(GetListHandle(), GWL_STYLE) | WS_VSCROLL | WS_HSCROLL; 280 if (isMultiSelect) { 281 style |= LBS_MULTIPLESEL; 282 } else { 283 style &= ~LBS_MULTIPLESEL; 284 } 285 DWORD exStyle = ::GetWindowLong(GetListHandle(), GWL_EXSTYLE); 286 287 jobject peer = GetPeer(env); 288 289 UnsubclassHWND(); 290 AwtToolkit::DestroyComponentHWND(m_hwnd); 291 CreateHWnd(env, L"", style, exStyle, 292 rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, 293 parentHWnd, 294 NULL, 295 ::GetSysColor(COLOR_WINDOWTEXT), 296 ::GetSysColor(COLOR_WINDOW), 297 peer); 298 299 SendListMessage(WM_SETFONT, (WPARAM)font, (LPARAM)FALSE); 300 SendListMessage(LB_SETITEMHEIGHT, 0, MAKELPARAM(itemHeight, 0)); 301 SendListMessage(LB_RESETCONTENT); 302 for (i = 0; i < nCount; i++) { 303 InsertString(i, strings[i]); 304 delete [] strings[i]; 305 } 306 delete[] strings; 307 if (toSelect != -1) { 308 Select(toSelect); 309 } 310 311 AdjustHorizontalScrollbar(); 312 } 313 314 /* 315 * There currently is no good place to cache java.awt.Dimension field 316 * ids. If this method gets called a lot, one such place should be found. 317 * -- br 07/18/97. 318 */ 319 jobject AwtList::PreferredItemSize(JNIEnv *env) 320 { 321 jobject peer = GetPeer(env); 322 jobject dimension = JNU_CallMethodByName(env, NULL, peer, "getPreferredSize", 323 "(I)Ljava/awt/Dimension;", 324 1).l; 325 326 DASSERT(!safe_ExceptionOccurred(env)); 327 if (dimension == NULL) { 328 return NULL; 329 } 330 /* This size is too big for each item height. */ 331 (env)->SetIntField(dimension, AwtDimension::heightID, GetFontHeight(env)); 332 333 return dimension; 334 } 335 336 // Every time something gets added to the list, we increase the max width 337 // of items that have ever been added. If it surpasses the width of the 338 // listbox, we show the scrollbar. When things get deleted, we shrink 339 // the scroll region back down and hide the scrollbar, if needed. 340 void AwtList::AdjustHorizontalScrollbar() 341 { 342 // The border width is added to the horizontal extent to ensure that we 343 // can view all of the text when we move the horz. scrollbar to the end. 344 int cxBorders = GetSystemMetrics( SM_CXBORDER ) * 2; 345 RECT rect; 346 VERIFY(::GetClientRect(GetListHandle(), &rect)); 347 LRESULT iHorzExt = SendListMessage(LB_GETHORIZONTALEXTENT, 0, 0L ) - cxBorders; 348 if ( (m_nMaxWidth > rect.left) // if strings wider than listbox 349 || (iHorzExt != m_nMaxWidth) ) // or scrollbar not needed anymore. 350 { 351 SendListMessage(LB_SETHORIZONTALEXTENT, m_nMaxWidth + cxBorders, 0L); 352 } 353 } 354 355 // This function goes through all strings in the list to find the width, 356 // in pixels, of the longest string in the list. 357 void AwtList::UpdateMaxItemWidth() 358 { 359 m_nMaxWidth = 0; 360 361 JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2); 362 if (env->EnsureLocalCapacity(2) < 0) 363 return; 364 365 HDC hDC = ::GetDC(GetHWnd()); 366 367 jobject self = GetPeer(env); 368 DASSERT(self); 369 370 /* target is java.awt.List */ 371 jobject target = env->GetObjectField(self, AwtObject::targetID); 372 jobject font = GET_FONT(target, self); 373 374 int nCount = GetCount(); 375 for ( int i=0; i < nCount; i++ ) 376 { 377 jstring jstr = GetItemString( env, target, i ); 378 SIZE size = AwtFont::getMFStringSize( hDC, font, jstr ); 379 if ( size.cx > m_nMaxWidth ) 380 m_nMaxWidth = size.cx; 381 env->DeleteLocalRef( jstr ); 382 } 383 384 // free up the shared DC and release local refs 385 ::ReleaseDC(GetHWnd(), hDC); 386 env->DeleteLocalRef( target ); 387 env->DeleteLocalRef( font ); 388 389 // Now adjust the horizontal scrollbar extent 390 AdjustHorizontalScrollbar(); 391 } 392 393 MsgRouting 394 AwtList::WmSize(UINT type, int w, int h) 395 { 396 AdjustHorizontalScrollbar(); 397 return AwtComponent::WmSize(type, w, h); 398 } 399 400 MsgRouting 401 AwtList::OwnerDrawItem(UINT /*ctrlId*/, DRAWITEMSTRUCT& drawInfo) 402 { 403 AwtComponent::DrawListItem((JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2), drawInfo); 404 return mrConsume; 405 } 406 407 MsgRouting 408 AwtList::OwnerMeasureItem(UINT /*ctrlId*/, MEASUREITEMSTRUCT& measureInfo) 409 { 410 AwtComponent::MeasureListItem((JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2), measureInfo); 411 return mrConsume; 412 } 413 414 MsgRouting 415 AwtList::WmNcHitTest(UINT x, UINT y, LRESULT& retVal) 416 { 417 if (::IsWindow(AwtWindow::GetModalBlocker(AwtComponent::GetTopLevelParentForWindow(GetHWnd())))) { 418 retVal = HTCLIENT; 419 return mrConsume; 420 } 421 return AwtComponent::WmNcHitTest(x, y, retVal); 422 } 423 424 MsgRouting 425 AwtList::WmMouseUp(UINT flags, int x, int y, int button) 426 { 427 MsgRouting result = mrDoDefault; 428 // if this list is in the modal blocked window, this message should be consumed, 429 // however AwtComponent::WmMouseUp must be called anyway 430 if (::IsWindow(AwtWindow::GetModalBlocker(AwtComponent::GetTopLevelParentForWindow(GetHWnd())))) { 431 result = mrConsume; 432 } else { 433 if (button == LEFT_BUTTON) { 434 WmCommand(0, GetListHandle(), LBN_SELCHANGE); 435 } 436 } 437 MsgRouting compResult = AwtComponent::WmMouseUp(flags, x, y, button); 438 return (result == mrConsume) ? result : compResult; 439 } 440 441 MsgRouting 442 AwtList::WmMouseDown(UINT flags, int x, int y, int button) 443 { 444 MsgRouting mrResult = AwtComponent::WmMouseDown(flags, x, y, button); 445 446 if (::IsWindow(AwtWindow::GetModalBlocker(AwtComponent::GetTopLevelParentForWindow(GetHWnd())))) 447 { 448 return mrConsume; 449 } 450 451 /* 452 * As we consume WM_LBUTONDOWN the list won't trigger ActionEvent by double click. 453 * We trigger it ourselves. (see also 6240202) 454 */ 455 int clickCount = GetClickCount(); 456 if (button == LEFT_BUTTON && clickCount >= 2 && clickCount % 2 == 0) { 457 WmCommand(0, GetListHandle(), LBN_DBLCLK); 458 } 459 return mrResult; 460 } 461 462 MsgRouting 463 AwtList::WmCtlColor(HDC hDC, HWND hCtrl, UINT ctlColor, HBRUSH& retBrush) 464 { 465 DASSERT(ctlColor == CTLCOLOR_LISTBOX); 466 DASSERT(hCtrl == GetListHandle()); 467 ::SetBkColor(hDC, GetBackgroundColor()); 468 ::SetTextColor(hDC, GetColor()); 469 retBrush = GetBackgroundBrush(); 470 return mrConsume; 471 } 472 473 BOOL AwtList::IsFocusingMouseMessage(MSG *pMsg) 474 { 475 return pMsg->message == WM_LBUTTONDOWN || pMsg->message == WM_LBUTTONDBLCLK; 476 } 477 478 MsgRouting AwtList::HandleEvent(MSG *msg, BOOL synthetic) 479 { 480 if (IsFocusingMouseMessage(msg)) { 481 LONG item = static_cast<LONG>(SendListMessage(LB_ITEMFROMPOINT, 0, msg->lParam)); 482 if (item != LB_ERR) { 483 if (isMultiSelect) { 484 if (IsItemSelected(item)) { 485 Deselect(item); 486 } else { 487 Select(item); 488 } 489 } else { 490 Select(item); 491 } 492 } 493 delete msg; 494 return mrConsume; 495 } 496 if (msg->message == WM_KEYDOWN && msg->wParam == VK_RETURN) { 497 WmNotify(LBN_DBLCLK); 498 } 499 return AwtComponent::HandleEvent(msg, synthetic); 500 } 501 502 // Fix for 4665745. 503 // Override WmPrint to catch when the list control (not wrapper) should 504 // operate WM_PRINT to be compatible with the "smooth scrolling" feature. 505 MsgRouting AwtList::WmPrint(HDC hDC, LPARAM flags) 506 { 507 if (!isWrapperPrint && 508 (flags & PRF_CLIENT) && 509 (GetStyleEx() & WS_EX_CLIENTEDGE)) 510 { 511 int nOriginalDC = ::SaveDC(hDC); 512 DASSERT(nOriginalDC != 0); 513 // Save a copy of the DC for WmPrintClient 514 VERIFY(::SaveDC(hDC)); 515 DefWindowProc(WM_PRINT, (WPARAM) hDC, 516 (flags & (PRF_CLIENT | PRF_CHECKVISIBLE | PRF_ERASEBKGND))); 517 VERIFY(::RestoreDC(hDC, nOriginalDC)); 518 519 flags &= ~PRF_CLIENT; 520 } 521 522 return AwtComponent::WmPrint(hDC, flags); 523 } 524 525 MsgRouting 526 AwtList::WmNotify(UINT notifyCode) 527 { 528 if (notifyCode == LBN_SELCHANGE || notifyCode == LBN_DBLCLK) { 529 /* Fixed an asserion failure when clicking on an empty List. */ 530 int nCurrentSelection = static_cast<int>(SendListMessage(LB_GETCURSEL)); 531 if (nCurrentSelection != LB_ERR && GetCount() > 0) { 532 if (notifyCode == LBN_SELCHANGE) { 533 DoCallback("handleListChanged", "(I)V", nCurrentSelection); 534 } 535 else if (notifyCode == LBN_DBLCLK) { 536 DoCallback("handleAction", "(IJI)V", nCurrentSelection, 537 ::JVM_CurrentTimeMillis(NULL, 0), 538 (jint)AwtComponent::GetActionModifiers()); 539 } 540 } 541 } 542 return mrDoDefault; 543 } 544 545 BOOL AwtList::InheritsNativeMouseWheelBehavior() {return true;} 546 547 jint AwtList::_GetMaxWidth(void *param) 548 { 549 JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2); 550 551 jobject self = (jobject)param; 552 553 jint result = 0; 554 AwtList *l = NULL; 555 556 PDATA pData; 557 JNI_CHECK_PEER_GOTO(self, ret); 558 l = (AwtList *)pData; 559 if (::IsWindow(l->GetHWnd())) 560 { 561 result = l->GetMaxWidth(); 562 } 563 ret: 564 env->DeleteGlobalRef(self); 565 566 return result; 567 } 568 569 void AwtList::_UpdateMaxItemWidth(void *param) 570 { 571 JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2); 572 573 jobject self = (jobject)param; 574 575 AwtList *l = NULL; 576 577 PDATA pData; 578 JNI_CHECK_PEER_GOTO(self, ret); 579 l = (AwtList *)pData; 580 if (::IsWindow(l->GetHWnd())) 581 { 582 l->UpdateMaxItemWidth(); 583 } 584 ret: 585 env->DeleteGlobalRef(self); 586 } 587 588 void AwtList::_AddItems(void *param) 589 { 590 JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2); 591 592 AddItemsStruct *ais = (AddItemsStruct *)param; 593 jobject self = ais->list; 594 jobjectArray items = ais->items; 595 jint index = ais->index; 596 jint width = ais->width; 597 598 int badAlloc = 0; 599 AwtList *l = NULL; 600 601 PDATA pData; 602 JNI_CHECK_PEER_GOTO(self, ret); 603 JNI_CHECK_NULL_GOTO(items, "null items", ret); 604 l = (AwtList*)pData; 605 if (::IsWindow(l->GetHWnd())) 606 { 607 int itemCount = env->GetArrayLength(items); 608 if (itemCount > 0) 609 { 610 AwtList* l = (AwtList*)pData; 611 l->SendListMessage(WM_SETREDRAW, (WPARAM)FALSE, 0); 612 for (jsize i=0; i < itemCount; i++) 613 { 614 LPTSTR itemPtr = NULL; 615 jstring item = (jstring)env->GetObjectArrayElement(items, i); 616 if (env->ExceptionCheck()) goto ret; 617 if (item == NULL) goto next_item; 618 itemPtr = (LPTSTR)JNU_GetStringPlatformChars(env, item, 0); 619 if (itemPtr == NULL) 620 { 621 badAlloc = 1; 622 } 623 else 624 { 625 l->InsertString(index+i, itemPtr); 626 JNU_ReleaseStringPlatformChars(env, item, itemPtr); 627 } 628 env->DeleteLocalRef(item); 629 next_item: 630 ; 631 } 632 l->SendListMessage(WM_SETREDRAW, (WPARAM)TRUE, 0); 633 l->InvalidateList(NULL, TRUE); 634 l->CheckMaxWidth(width); 635 } 636 } 637 ret: 638 env->DeleteGlobalRef(self); 639 env->DeleteGlobalRef(items); 640 641 delete ais; 642 643 if (badAlloc) 644 { 645 throw std::bad_alloc(); 646 } 647 } 648 649 void AwtList::_DelItems(void *param) 650 { JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2); 651 652 DelItemsStruct *dis = (DelItemsStruct *)param; 653 jobject self = dis->list; 654 jint start = dis->start; 655 jint end = dis->end; 656 657 AwtList *l = NULL; 658 659 PDATA pData; 660 JNI_CHECK_PEER_GOTO(self, ret); 661 l = (AwtList*)pData; 662 if (::IsWindow(l->GetHWnd())) 663 { 664 int count = l->GetCount(); 665 666 if (start == 0 && end == count) 667 { 668 l->SendListMessage(LB_RESETCONTENT); 669 } 670 else 671 { 672 for (int i = start; i <= end; i++) 673 { 674 l->SendListMessage(LB_DELETESTRING, start); 675 } 676 } 677 678 l->UpdateMaxItemWidth(); 679 } 680 ret: 681 env->DeleteGlobalRef(self); 682 683 delete dis; 684 } 685 686 void AwtList::_Select(void *param) 687 { 688 JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2); 689 690 SelectElementStruct *ses = (SelectElementStruct *)param; 691 jobject self = ses->list; 692 jint index = ses->index; 693 694 AwtList *l = NULL; 695 696 PDATA pData; 697 JNI_CHECK_PEER_GOTO(self, ret); 698 l = (AwtList*)pData; 699 if (::IsWindow(l->GetHWnd())) 700 { 701 l->Select(index); 702 } 703 ret: 704 env->DeleteGlobalRef(self); 705 706 delete ses; 707 } 708 709 void AwtList::_Deselect(void *param) 710 { 711 JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2); 712 713 SelectElementStruct *ses = (SelectElementStruct *)param; 714 jobject self = ses->list; 715 jint index = ses->index; 716 717 AwtList *l = NULL; 718 719 PDATA pData; 720 JNI_CHECK_PEER_GOTO(self, ret); 721 l = (AwtList*)pData; 722 if (::IsWindow(l->GetHWnd())) 723 { 724 l->Deselect(index); 725 } 726 ret: 727 env->DeleteGlobalRef(self); 728 729 delete ses; 730 } 731 732 void AwtList::_MakeVisible(void *param) 733 { 734 JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2); 735 736 SelectElementStruct *ses = (SelectElementStruct *)param; 737 jobject self = ses->list; 738 jint index = ses->index; 739 740 AwtList *l = NULL; 741 742 PDATA pData; 743 JNI_CHECK_PEER_GOTO(self, ret); 744 l = (AwtList*)pData; 745 if (::IsWindow(l->GetHWnd())) 746 { 747 l->SendListMessage(LB_SETTOPINDEX, index); 748 } 749 ret: 750 env->DeleteGlobalRef(self); 751 752 delete ses; 753 } 754 755 jboolean AwtList::_IsSelected(void *param) 756 { 757 JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2); 758 759 SelectElementStruct *ses = (SelectElementStruct *)param; 760 jobject self = ses->list; 761 jint index = ses->index; 762 763 jboolean result = JNI_FALSE; 764 AwtList *l = NULL; 765 766 PDATA pData; 767 JNI_CHECK_PEER_GOTO(self, ret); 768 l = (AwtList*)pData; 769 if (::IsWindow(l->GetHWnd())) 770 { 771 result = l->IsItemSelected(index); 772 } 773 ret: 774 env->DeleteGlobalRef(self); 775 776 delete ses; 777 778 return result; 779 } 780 781 void AwtList::_SetMultipleSelections(void *param) 782 { 783 JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2); 784 785 SetMultipleSelectionsStruct *sms = (SetMultipleSelectionsStruct *)param; 786 jobject self = sms->list; 787 jboolean on = sms->on; 788 789 AwtList *l = NULL; 790 791 PDATA pData; 792 JNI_CHECK_PEER_GOTO(self, ret); 793 l = (AwtList*)pData; 794 if (::IsWindow(l->GetHWnd())) 795 { 796 AwtToolkit::GetInstance().SendMessage(WM_AWT_LIST_SETMULTISELECT, 797 (WPARAM)self, on); 798 } 799 ret: 800 env->DeleteGlobalRef(self); 801 802 delete sms; 803 } 804 805 /************************************************************************ 806 * WListPeer native methods 807 * 808 * This class seems to have numerous bugs in it, but they are all bugs 809 * which were present before conversion to JNI. -br. 810 */ 811 812 extern "C" { 813 814 /* 815 * Class: sun_awt_windows_WListPeer 816 * Method: getMaxWidth 817 * Signature: ()I 818 */ 819 JNIEXPORT jint JNICALL 820 Java_sun_awt_windows_WListPeer_getMaxWidth(JNIEnv *env, jobject self) 821 { 822 TRY; 823 824 jobject selfGlobalRef = env->NewGlobalRef(self); 825 826 return (jint)((intptr_t)AwtToolkit::GetInstance().SyncCall( 827 (void *(*)(void *))AwtList::_GetMaxWidth, 828 (void *)selfGlobalRef)); 829 // selfGlobalRef is deleted in _GetMaxWidth 830 831 CATCH_BAD_ALLOC_RET(0); 832 } 833 834 /* 835 * Class: sun_awt_windows_WListPeer 836 * Method: updateMaxItemWidth 837 * Signature: ()V 838 */ 839 JNIEXPORT void JNICALL 840 Java_sun_awt_windows_WListPeer_updateMaxItemWidth(JNIEnv *env, jobject self) 841 { 842 TRY; 843 844 jobject selfGlobalRef = env->NewGlobalRef(self); 845 846 AwtToolkit::GetInstance().SyncCall(AwtList::_UpdateMaxItemWidth, 847 (void *)selfGlobalRef); 848 // selfGlobalRef is deleted in _UpdateMaxItemWidth 849 850 CATCH_BAD_ALLOC; 851 } 852 853 /* 854 * Class: sun_awt_windows_WListPeer 855 * Method: addItems 856 * Signature: ([Ljava/lang/String;II)V 857 */ 858 JNIEXPORT void JNICALL 859 Java_sun_awt_windows_WListPeer_addItems(JNIEnv *env, jobject self, 860 jobjectArray items, jint index, jint width) 861 { 862 TRY; 863 864 AddItemsStruct *ais = new AddItemsStruct; 865 ais->list = env->NewGlobalRef(self); 866 ais->items = (jobjectArray)env->NewGlobalRef(items); 867 ais->index = index; 868 ais->width = width; 869 870 AwtToolkit::GetInstance().SyncCall(AwtList::_AddItems, ais); 871 // global refs and ais are deleted in _AddItems() 872 873 CATCH_BAD_ALLOC; 874 } 875 876 /* 877 * Class: sun_awt_windows_WListPeer 878 * Method: delItems 879 * Signature: (II)V 880 */ 881 JNIEXPORT void JNICALL 882 Java_sun_awt_windows_WListPeer_delItems(JNIEnv *env, jobject self, 883 jint start, jint end) 884 { 885 TRY; 886 887 DelItemsStruct *dis = new DelItemsStruct; 888 dis->list = env->NewGlobalRef(self); 889 dis->start = start; 890 dis->end = end; 891 892 AwtToolkit::GetInstance().SyncCall(AwtList::_DelItems, dis); 893 // global ref and dis are deleted in _DelItems 894 895 CATCH_BAD_ALLOC; 896 } 897 898 /* 899 * Class: sun_awt_windows_WListPeer 900 * Method: select 901 * Signature: (I)V 902 */ 903 JNIEXPORT void JNICALL 904 Java_sun_awt_windows_WListPeer_select(JNIEnv *env, jobject self, 905 jint pos) 906 { 907 TRY; 908 909 SelectElementStruct *ses = new SelectElementStruct; 910 ses->list = env->NewGlobalRef(self); 911 ses->index = pos; 912 913 AwtToolkit::GetInstance().SyncCall(AwtList::_Select, ses); 914 // global ref and ses are deleted in _Select 915 916 CATCH_BAD_ALLOC; 917 } 918 919 /* 920 * Class: sun_awt_windows_WListPeer 921 * Method: deselect 922 * Signature: (I)V 923 */ 924 JNIEXPORT void JNICALL 925 Java_sun_awt_windows_WListPeer_deselect(JNIEnv *env, jobject self, 926 jint pos) 927 { 928 TRY; 929 930 SelectElementStruct *ses = new SelectElementStruct; 931 ses->list = env->NewGlobalRef(self); 932 ses->index = pos; 933 934 AwtToolkit::GetInstance().SyncCall(AwtList::_Deselect, ses); 935 // global ref and ses are deleted in _Deselect 936 937 CATCH_BAD_ALLOC; 938 } 939 940 /* 941 * Class: sun_awt_windows_WListPeer 942 * Method: makeVisible 943 * Signature: (I)V 944 */ 945 JNIEXPORT void JNICALL 946 Java_sun_awt_windows_WListPeer_makeVisible(JNIEnv *env, jobject self, 947 jint pos) 948 { 949 TRY; 950 951 SelectElementStruct *ses = new SelectElementStruct; 952 ses->list = env->NewGlobalRef(self); 953 ses->index = pos; 954 955 AwtToolkit::GetInstance().SyncCall(AwtList::_MakeVisible, ses); 956 // global ref and ses are deleted in _MakeVisible 957 958 CATCH_BAD_ALLOC; 959 } 960 961 /* 962 * Class: sun_awt_windows_WListPeer 963 * Method: setMultipleSelections 964 * Signature: (Z)V 965 */ 966 JNIEXPORT void JNICALL 967 Java_sun_awt_windows_WListPeer_setMultipleSelections(JNIEnv *env, jobject self, 968 jboolean on) 969 { 970 TRY; 971 972 SetMultipleSelectionsStruct *sms = new SetMultipleSelectionsStruct; 973 sms->list = env->NewGlobalRef(self); 974 sms->on = on; 975 976 AwtToolkit::GetInstance().SyncCall(AwtList::_SetMultipleSelections, sms); 977 // global ref and sms are deleted in AwtList::_SetMultipleSelections 978 979 CATCH_BAD_ALLOC; 980 } 981 982 /* 983 * Class: sun_awt_windows_WListPeer 984 * Method: create 985 * Signature: (Lsun/awt/windows/WComponentPeer;)V 986 */ 987 JNIEXPORT void JNICALL 988 Java_sun_awt_windows_WListPeer_create(JNIEnv *env, jobject self, 989 jobject parent) 990 { 991 TRY; 992 993 AwtToolkit::CreateComponent(self, parent, 994 (AwtToolkit::ComponentFactory)AwtList::Create); 995 996 CATCH_BAD_ALLOC; 997 } 998 999 /* 1000 * Class: sun_awt_windows_WListPeer 1001 * Method: isSelected 1002 * Signature: (I)Z 1003 */ 1004 JNIEXPORT jboolean JNICALL 1005 Java_sun_awt_windows_WListPeer_isSelected(JNIEnv *env, jobject self, 1006 jint index) 1007 { 1008 TRY; 1009 1010 SelectElementStruct *ses = new SelectElementStruct; 1011 ses->list = env->NewGlobalRef(self); 1012 ses->index = index; 1013 1014 return (jboolean)((intptr_t)AwtToolkit::GetInstance().SyncCall( 1015 (void *(*)(void *))AwtList::_IsSelected, ses)); 1016 // global ref and ses are deleted in _IsSelected 1017 1018 CATCH_BAD_ALLOC_RET(FALSE); 1019 } 1020 1021 } /* extern "C" */