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 = 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 count = GetCount();
482 if (count > 0) {
483 LONG item = static_cast<LONG>(SendListMessage(LB_ITEMFROMPOINT, 0, msg->lParam));
484 item = LOWORD(item);
485 if (SendListMessage(LB_GETTOPINDEX, 0, 0) > item) {
486 item = (count / max_index) * max_index + item + 1;
487 }
488 if (item < count) {
489 if (isMultiSelect) {
490 if (IsItemSelected(item)) {
491 Deselect(item);
492 } else {
493 Select(item);
494 }
495 } else {
496 Select(item);
497 }
498 }
499 }
500 delete msg;
501 return mrConsume;
502 }
503 if (msg->message == WM_KEYDOWN && msg->wParam == VK_RETURN) {
504 WmNotify(LBN_DBLCLK);
505 }
506 return AwtComponent::HandleEvent(msg, synthetic);
507 }
508
509 // Fix for 4665745.
510 // Override WmPrint to catch when the list control (not wrapper) should
511 // operate WM_PRINT to be compatible with the "smooth scrolling" feature.
512 MsgRouting AwtList::WmPrint(HDC hDC, LPARAM flags)
513 {
514 if (!isWrapperPrint &&
515 (flags & PRF_CLIENT) &&
516 (GetStyleEx() & WS_EX_CLIENTEDGE))
517 {
518 int nOriginalDC = ::SaveDC(hDC);
519 DASSERT(nOriginalDC != 0);
520 // Save a copy of the DC for WmPrintClient
521 VERIFY(::SaveDC(hDC));
522 DefWindowProc(WM_PRINT, (WPARAM) hDC,
523 (flags & (PRF_CLIENT | PRF_CHECKVISIBLE | PRF_ERASEBKGND)));
524 VERIFY(::RestoreDC(hDC, nOriginalDC));
525
526 flags &= ~PRF_CLIENT;
527 }
528
529 return AwtComponent::WmPrint(hDC, flags);
530 }
531
532 MsgRouting
533 AwtList::WmNotify(UINT notifyCode)
534 {
535 if (notifyCode == LBN_SELCHANGE || notifyCode == LBN_DBLCLK) {
536 /* Fixed an asserion failure when clicking on an empty List. */
537 int nCurrentSelection = SendListMessage(LB_GETCURSEL);
538 if (nCurrentSelection != LB_ERR && GetCount() > 0) {
539 if (notifyCode == LBN_SELCHANGE) {
540 DoCallback("handleListChanged", "(I)V", nCurrentSelection);
541 }
542 else if (notifyCode == LBN_DBLCLK) {
543 DoCallback("handleAction", "(IJI)V", nCurrentSelection,
544 ::JVM_CurrentTimeMillis(NULL, 0),
545 (jint)AwtComponent::GetActionModifiers());
546 }
547 }
548 }
549 return mrDoDefault;
550 }
551
552 BOOL AwtList::InheritsNativeMouseWheelBehavior() {return true;}
553
554 jint AwtList::_GetMaxWidth(void *param)
555 {
556 JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
557
558 jobject self = (jobject)param;
559
560 jint result = 0;
561 AwtList *l = NULL;
562
563 PDATA pData;
564 JNI_CHECK_PEER_GOTO(self, ret);
565 l = (AwtList *)pData;
566 if (::IsWindow(l->GetHWnd()))
567 {
568 result = l->GetMaxWidth();
569 }
570 ret:
571 env->DeleteGlobalRef(self);
572
573 return result;
574 }
575
576 void AwtList::_UpdateMaxItemWidth(void *param)
577 {
578 JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
579
580 jobject self = (jobject)param;
581
582 AwtList *l = NULL;
583
584 PDATA pData;
585 JNI_CHECK_PEER_GOTO(self, ret);
586 l = (AwtList *)pData;
587 if (::IsWindow(l->GetHWnd()))
588 {
589 l->UpdateMaxItemWidth();
590 }
591 ret:
592 env->DeleteGlobalRef(self);
593 }
594
595 void AwtList::_AddItems(void *param)
596 {
597 JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
598
599 AddItemsStruct *ais = (AddItemsStruct *)param;
600 jobject self = ais->list;
601 jobjectArray items = ais->items;
602 jint index = ais->index;
603 jint width = ais->width;
604
605 int badAlloc = 0;
606 AwtList *l = NULL;
607
608 PDATA pData;
609 JNI_CHECK_PEER_GOTO(self, ret);
610 JNI_CHECK_NULL_GOTO(items, "null items", ret);
611 l = (AwtList*)pData;
612 if (::IsWindow(l->GetHWnd()))
613 {
614 int itemCount = env->GetArrayLength(items);
615 if (itemCount > 0)
616 {
617 AwtList* l = (AwtList*)pData;
618 l->SendListMessage(WM_SETREDRAW, (WPARAM)FALSE, 0);
619 for (jsize i=0; i < itemCount; i++)
620 {
621 LPTSTR itemPtr = NULL;
622 jstring item = (jstring)env->GetObjectArrayElement(items, i);
623 if (env->ExceptionCheck()) goto ret;
624 if (item == NULL) goto next_item;
625 itemPtr = (LPTSTR)JNU_GetStringPlatformChars(env, item, 0);
626 if (itemPtr == NULL)
627 {
628 badAlloc = 1;
629 }
630 else
631 {
632 l->InsertString(index+i, itemPtr);
633 JNU_ReleaseStringPlatformChars(env, item, itemPtr);
634 }
635 env->DeleteLocalRef(item);
636 next_item:
637 ;
638 }
639 l->SendListMessage(WM_SETREDRAW, (WPARAM)TRUE, 0);
640 l->InvalidateList(NULL, TRUE);
641 l->CheckMaxWidth(width);
642 }
643 }
644 ret:
645 env->DeleteGlobalRef(self);
646 env->DeleteGlobalRef(items);
647
648 delete ais;
649
650 if (badAlloc)
651 {
652 throw std::bad_alloc();
653 }
654 }
655
656 void AwtList::_DelItems(void *param)
657 { JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
658
659 DelItemsStruct *dis = (DelItemsStruct *)param;
660 jobject self = dis->list;
661 jint start = dis->start;
662 jint end = dis->end;
663
664 AwtList *l = NULL;
665
666 PDATA pData;
667 JNI_CHECK_PEER_GOTO(self, ret);
668 l = (AwtList*)pData;
669 if (::IsWindow(l->GetHWnd()))
670 {
671 int count = l->GetCount();
672
673 if (start == 0 && end == count)
674 {
675 l->SendListMessage(LB_RESETCONTENT);
676 }
677 else
678 {
679 for (int i = start; i <= end; i++)
680 {
681 l->SendListMessage(LB_DELETESTRING, start);
682 }
683 }
684
685 l->UpdateMaxItemWidth();
686 }
687 ret:
688 env->DeleteGlobalRef(self);
689
690 delete dis;
691 }
692
693 void AwtList::_Select(void *param)
694 {
695 JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
696
697 SelectElementStruct *ses = (SelectElementStruct *)param;
698 jobject self = ses->list;
699 jint index = ses->index;
700
701 AwtList *l = NULL;
702
703 PDATA pData;
704 JNI_CHECK_PEER_GOTO(self, ret);
705 l = (AwtList*)pData;
706 if (::IsWindow(l->GetHWnd()))
707 {
708 l->Select(index);
709 }
710 ret:
711 env->DeleteGlobalRef(self);
712
713 delete ses;
714 }
715
716 void AwtList::_Deselect(void *param)
717 {
718 JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
719
720 SelectElementStruct *ses = (SelectElementStruct *)param;
721 jobject self = ses->list;
722 jint index = ses->index;
723
724 AwtList *l = NULL;
725
726 PDATA pData;
727 JNI_CHECK_PEER_GOTO(self, ret);
728 l = (AwtList*)pData;
729 if (::IsWindow(l->GetHWnd()))
730 {
731 l->Deselect(index);
732 }
733 ret:
734 env->DeleteGlobalRef(self);
735
736 delete ses;
737 }
738
739 void AwtList::_MakeVisible(void *param)
740 {
741 JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
742
743 SelectElementStruct *ses = (SelectElementStruct *)param;
744 jobject self = ses->list;
745 jint index = ses->index;
746
747 AwtList *l = NULL;
748
749 PDATA pData;
750 JNI_CHECK_PEER_GOTO(self, ret);
751 l = (AwtList*)pData;
752 if (::IsWindow(l->GetHWnd()))
753 {
754 l->SendListMessage(LB_SETTOPINDEX, index);
755 }
756 ret:
757 env->DeleteGlobalRef(self);
758
759 delete ses;
760 }
761
762 jboolean AwtList::_IsSelected(void *param)
763 {
764 JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
765
766 SelectElementStruct *ses = (SelectElementStruct *)param;
767 jobject self = ses->list;
768 jint index = ses->index;
769
770 jboolean result = JNI_FALSE;
771 AwtList *l = NULL;
772
773 PDATA pData;
774 JNI_CHECK_PEER_GOTO(self, ret);
775 l = (AwtList*)pData;
776 if (::IsWindow(l->GetHWnd()))
777 {
778 result = l->IsItemSelected(index);
779 }
780 ret:
781 env->DeleteGlobalRef(self);
782
783 delete ses;
784
785 return result;
786 }
787
788 void AwtList::_SetMultipleSelections(void *param)
789 {
790 JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
791
792 SetMultipleSelectionsStruct *sms = (SetMultipleSelectionsStruct *)param;
793 jobject self = sms->list;
794 jboolean on = sms->on;
795
796 AwtList *l = NULL;
797
798 PDATA pData;
799 JNI_CHECK_PEER_GOTO(self, ret);
800 l = (AwtList*)pData;
801 if (::IsWindow(l->GetHWnd()))
802 {
803 AwtToolkit::GetInstance().SendMessage(WM_AWT_LIST_SETMULTISELECT,
804 (WPARAM)self, on);
805 }
806 ret:
807 env->DeleteGlobalRef(self);
808
809 delete sms;
810 }
811
812 /************************************************************************
813 * WListPeer native methods
814 *
815 * This class seems to have numerous bugs in it, but they are all bugs
816 * which were present before conversion to JNI. -br.
817 */
818
819 extern "C" {
820
821 /*
822 * Class: sun_awt_windows_WListPeer
823 * Method: getMaxWidth
824 * Signature: ()I
825 */
826 JNIEXPORT jint JNICALL
827 Java_sun_awt_windows_WListPeer_getMaxWidth(JNIEnv *env, jobject self)
828 {
829 TRY;
830
831 jobject selfGlobalRef = env->NewGlobalRef(self);
832
833 return (jint)((intptr_t)AwtToolkit::GetInstance().SyncCall(
834 (void *(*)(void *))AwtList::_GetMaxWidth,
835 (void *)selfGlobalRef));
836 // selfGlobalRef is deleted in _GetMaxWidth
837
838 CATCH_BAD_ALLOC_RET(0);
839 }
840
841 /*
842 * Class: sun_awt_windows_WListPeer
843 * Method: updateMaxItemWidth
844 * Signature: ()V
845 */
846 JNIEXPORT void JNICALL
847 Java_sun_awt_windows_WListPeer_updateMaxItemWidth(JNIEnv *env, jobject self)
848 {
849 TRY;
850
851 jobject selfGlobalRef = env->NewGlobalRef(self);
852
853 AwtToolkit::GetInstance().SyncCall(AwtList::_UpdateMaxItemWidth,
854 (void *)selfGlobalRef);
855 // selfGlobalRef is deleted in _UpdateMaxItemWidth
856
857 CATCH_BAD_ALLOC;
858 }
859
860 /*
861 * Class: sun_awt_windows_WListPeer
862 * Method: addItems
863 * Signature: ([Ljava/lang/String;II)V
864 */
865 JNIEXPORT void JNICALL
866 Java_sun_awt_windows_WListPeer_addItems(JNIEnv *env, jobject self,
867 jobjectArray items, jint index, jint width)
868 {
869 TRY;
870
871 AddItemsStruct *ais = new AddItemsStruct;
872 ais->list = env->NewGlobalRef(self);
873 ais->items = (jobjectArray)env->NewGlobalRef(items);
874 ais->index = index;
875 ais->width = width;
876
877 AwtToolkit::GetInstance().SyncCall(AwtList::_AddItems, ais);
878 // global refs and ais are deleted in _AddItems()
879
880 CATCH_BAD_ALLOC;
881 }
882
883 /*
884 * Class: sun_awt_windows_WListPeer
885 * Method: delItems
886 * Signature: (II)V
887 */
888 JNIEXPORT void JNICALL
889 Java_sun_awt_windows_WListPeer_delItems(JNIEnv *env, jobject self,
890 jint start, jint end)
891 {
892 TRY;
893
894 DelItemsStruct *dis = new DelItemsStruct;
895 dis->list = env->NewGlobalRef(self);
896 dis->start = start;
897 dis->end = end;
898
899 AwtToolkit::GetInstance().SyncCall(AwtList::_DelItems, dis);
900 // global ref and dis are deleted in _DelItems
901
902 CATCH_BAD_ALLOC;
903 }
904
905 /*
906 * Class: sun_awt_windows_WListPeer
907 * Method: select
908 * Signature: (I)V
909 */
910 JNIEXPORT void JNICALL
911 Java_sun_awt_windows_WListPeer_select(JNIEnv *env, jobject self,
912 jint pos)
913 {
914 TRY;
915
916 SelectElementStruct *ses = new SelectElementStruct;
917 ses->list = env->NewGlobalRef(self);
918 ses->index = pos;
919
920 AwtToolkit::GetInstance().SyncCall(AwtList::_Select, ses);
921 // global ref and ses are deleted in _Select
922
923 CATCH_BAD_ALLOC;
924 }
925
926 /*
927 * Class: sun_awt_windows_WListPeer
928 * Method: deselect
929 * Signature: (I)V
930 */
931 JNIEXPORT void JNICALL
932 Java_sun_awt_windows_WListPeer_deselect(JNIEnv *env, jobject self,
933 jint pos)
934 {
935 TRY;
936
937 SelectElementStruct *ses = new SelectElementStruct;
938 ses->list = env->NewGlobalRef(self);
939 ses->index = pos;
940
941 AwtToolkit::GetInstance().SyncCall(AwtList::_Deselect, ses);
942 // global ref and ses are deleted in _Deselect
943
944 CATCH_BAD_ALLOC;
945 }
946
947 /*
948 * Class: sun_awt_windows_WListPeer
949 * Method: makeVisible
950 * Signature: (I)V
951 */
952 JNIEXPORT void JNICALL
953 Java_sun_awt_windows_WListPeer_makeVisible(JNIEnv *env, jobject self,
954 jint pos)
955 {
956 TRY;
957
958 SelectElementStruct *ses = new SelectElementStruct;
959 ses->list = env->NewGlobalRef(self);
960 ses->index = pos;
961
962 AwtToolkit::GetInstance().SyncCall(AwtList::_MakeVisible, ses);
963 // global ref and ses are deleted in _MakeVisible
964
965 CATCH_BAD_ALLOC;
966 }
967
968 /*
969 * Class: sun_awt_windows_WListPeer
970 * Method: setMultipleSelections
971 * Signature: (Z)V
972 */
973 JNIEXPORT void JNICALL
974 Java_sun_awt_windows_WListPeer_setMultipleSelections(JNIEnv *env, jobject self,
975 jboolean on)
976 {
977 TRY;
978
979 SetMultipleSelectionsStruct *sms = new SetMultipleSelectionsStruct;
980 sms->list = env->NewGlobalRef(self);
981 sms->on = on;
982
983 AwtToolkit::GetInstance().SyncCall(AwtList::_SetMultipleSelections, sms);
984 // global ref and sms are deleted in AwtList::_SetMultipleSelections
985
986 CATCH_BAD_ALLOC;
987 }
988
989 /*
990 * Class: sun_awt_windows_WListPeer
991 * Method: create
992 * Signature: (Lsun/awt/windows/WComponentPeer;)V
993 */
994 JNIEXPORT void JNICALL
995 Java_sun_awt_windows_WListPeer_create(JNIEnv *env, jobject self,
996 jobject parent)
997 {
998 TRY;
999
1000 AwtToolkit::CreateComponent(self, parent,
1001 (AwtToolkit::ComponentFactory)AwtList::Create);
1002
1003 CATCH_BAD_ALLOC;
1004 }
1005
1006 /*
1007 * Class: sun_awt_windows_WListPeer
1008 * Method: isSelected
1009 * Signature: (I)Z
1010 */
1011 JNIEXPORT jboolean JNICALL
1012 Java_sun_awt_windows_WListPeer_isSelected(JNIEnv *env, jobject self,
1013 jint index)
1014 {
1015 TRY;
1016
1017 SelectElementStruct *ses = new SelectElementStruct;
1018 ses->list = env->NewGlobalRef(self);
1019 ses->index = index;
1020
1021 return (jboolean)((intptr_t)AwtToolkit::GetInstance().SyncCall(
1022 (void *(*)(void *))AwtList::_IsSelected, ses));
1023 // global ref and ses are deleted in _IsSelected
1024
1025 CATCH_BAD_ALLOC_RET(FALSE);
1026 }
1027
1028 } /* extern "C" */