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