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