1 /*
   2  * Copyright (c) 1996, 2016, 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 "jni_util.h"
  27 #include "awt_Toolkit.h"
  28 #include "awt_Dialog.h"
  29 #include "awt_Window.h"
  30 
  31 #include <windowsx.h>
  32 
  33 #include "java_awt_Dialog.h"
  34 
  35 /* IMPORTANT! Read the README.JNI file for notes on JNI converted AWT code.
  36  */
  37 
  38 /************************************************************************/
  39 // Struct for _SetIMMOption() method
  40 struct SetIMMOptionStruct {
  41     jobject dialog;
  42     jstring option;
  43 };
  44 /************************************************************************
  45  * AwtDialog fields
  46  */
  47 
  48 jfieldID AwtDialog::titleID;
  49 jfieldID AwtDialog::undecoratedID;
  50 
  51 #if defined(DEBUG)
  52 // counts how many nested modal dialogs are open, a sanity
  53 // check to ensure the somewhat complicated disable/enable
  54 // code is working properly
  55 int AwtModalityNestCounter = 0;
  56 #endif
  57 
  58 HHOOK AWTModalHook;
  59 HHOOK AWTMouseHook;
  60 
  61 int VisibleModalDialogsCount = 0;
  62 
  63 /************************************************************************
  64  * AwtDialog class methods
  65  */
  66 
  67 AwtDialog::AwtDialog() {
  68     m_modalWnd = NULL;
  69 }
  70 
  71 AwtDialog::~AwtDialog()
  72 {
  73 }
  74 
  75 void AwtDialog::Dispose()
  76 {
  77     if (m_modalWnd != NULL) {
  78         WmEndModal();
  79     }
  80     AwtFrame::Dispose();
  81 }
  82 
  83 LPCTSTR AwtDialog::GetClassName() {
  84   return AWT_DIALOG_WINDOW_CLASS_NAME;
  85 }
  86 
  87 void AwtDialog::FillClassInfo(WNDCLASSEX *lpwc)
  88 {
  89     AwtWindow::FillClassInfo(lpwc);
  90     //Fixed 6280303: REGRESSION: Java cup icon appears in title bar of dialogs
  91     // Dialog inherits icon from its owner dinamically
  92     lpwc->hIcon = NULL;
  93     lpwc->hIconSm = NULL;
  94 }
  95 
  96 /*
  97  * Create a new AwtDialog object and window.
  98  */
  99 AwtDialog* AwtDialog::Create(jobject peer, jobject parent)
 100 {
 101     JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
 102 
 103     jobject target = NULL;
 104     AwtDialog* dialog = NULL;
 105 
 106     try {
 107         if (env->EnsureLocalCapacity(2) < 0) {
 108             return NULL;
 109         }
 110 
 111         PDATA pData;
 112         AwtWindow* awtParent = NULL;
 113         HWND hwndParent = NULL;
 114         target = env->GetObjectField(peer, AwtObject::targetID);
 115         JNI_CHECK_NULL_GOTO(target, "null target", done);
 116 
 117         if (parent != NULL) {
 118             JNI_CHECK_PEER_GOTO(parent, done);
 119             awtParent = (AwtWindow *)(JNI_GET_PDATA(parent));
 120             hwndParent = awtParent->GetHWnd();

 121         } else {
 122             // There is no way to prevent a parentless dialog from showing on
 123             //  the taskbar other than to specify an invisible parent and set
 124             //  WS_POPUP style for the dialog. Using toolkit window here. That
 125             //  will also excludes the dialog from appearing in window list while
 126             //  ALT+TAB'ing
 127             // From the other point, it may be confusing when the dialog without
 128             //  an owner is missing on the toolbar. So, do not set any fake
 129             //  parent window here.
 130 //            hwndParent = AwtToolkit::GetInstance().GetHWnd();
 131         }
 132         dialog = new AwtDialog();
 133 
 134         {
 135             int colorId = COLOR_3DFACE;
 136             DWORD style = WS_CAPTION | WS_SYSMENU | WS_CLIPCHILDREN;
 137             if (hwndParent != NULL) {
 138                 style |= WS_POPUP;
 139             }
 140             style &= ~(WS_MINIMIZEBOX|WS_MAXIMIZEBOX);
 141             DWORD exStyle = WS_EX_WINDOWEDGE | WS_EX_DLGMODALFRAME;
 142 
 143             if (GetRTL()) {
 144                 exStyle |= WS_EX_RIGHT | WS_EX_LEFTSCROLLBAR;
 145                 if (GetRTLReadingOrder())
 146                     exStyle |= WS_EX_RTLREADING;
 147             }
 148 
 149 
 150             if (env->GetBooleanField(target, AwtDialog::undecoratedID) == JNI_TRUE) {
 151                 style = WS_POPUP | WS_CLIPCHILDREN;
 152                 exStyle = 0;
 153                 dialog->m_isUndecorated = TRUE;
 154             }
 155 
 156             jint x = env->GetIntField(target, AwtComponent::xID);
 157             jint y = env->GetIntField(target, AwtComponent::yID);
 158             jint width = env->GetIntField(target, AwtComponent::widthID);
 159             jint height = env->GetIntField(target, AwtComponent::heightID);
 160 
 161             dialog->CreateHWnd(env, L"",
 162                                style, exStyle,
 163                                x, y, width, height,
 164                                hwndParent,
 165                                NULL,
 166                                ::GetSysColor(COLOR_WINDOWTEXT),
 167                                ::GetSysColor(colorId),
 168                                peer);
 169 
 170             dialog->RecalcNonClient();
 171             dialog->UpdateSystemMenu();
 172 
 173             /*
 174              * Initialize icon as inherited from parent if it exists
 175              */
 176             if (parent != NULL) {
 177                 dialog->m_hIcon = awtParent->GetHIcon();
 178                 dialog->m_hIconSm = awtParent->GetHIconSm();
 179                 dialog->m_iconInherited = TRUE;
 180             }
 181             dialog->DoUpdateIcon();
 182 
 183         }
 184     } catch (...) {
 185         env->DeleteLocalRef(target);
 186         throw;
 187     }
 188 
 189 done:
 190     env->DeleteLocalRef(target);
 191 
 192     return dialog;
 193 }
 194 
 195 MsgRouting AwtDialog::WmNcMouseDown(WPARAM hitTest, int x, int y, int button) {
 196     // By the request from Swing team, click on the Dialog's title should generate Ungrab
 197     if (m_grabbedWindow != NULL/* && !m_grabbedWindow->IsOneOfOwnersOf(this)*/) {
 198         m_grabbedWindow->Ungrab();
 199     }
 200 
 201     if (!IsFocusableWindow() && (button & LEFT_BUTTON)) {
 202         // Dialog is non-maximizable
 203         if ((button & DBL_CLICK) && hitTest == HTCAPTION) {
 204             return mrConsume;
 205         }
 206     }
 207     return AwtFrame::WmNcMouseDown(hitTest, x, y, button);
 208 }
 209 
 210 LRESULT CALLBACK AwtDialog::ModalFilterProc(int code,
 211                                             WPARAM wParam, LPARAM lParam)
 212 {
 213     HWND hWnd = (HWND)wParam;
 214     HWND blocker = AwtWindow::GetModalBlocker(hWnd);
 215     if (::IsWindow(blocker) &&
 216         ((code == HCBT_ACTIVATE) ||
 217          (code == HCBT_SETFOCUS)))
 218     {
 219         // fix for 6270632: this window and all its blockers can be minimized by
 220         // "show desktop" button, so we should restore them first
 221         if (::IsIconic(hWnd)) {
 222             ::ShowWindow(hWnd, SW_RESTORE);
 223         }
 224         PopupBlockers(blocker, TRUE, ::GetForegroundWindow(), FALSE);
 225         // return 1 to prevent the system from allowing the operation
 226         return 1;
 227     }
 228     return CallNextHookEx(0, code, wParam, lParam);
 229 }
 230 
 231 LRESULT CALLBACK AwtDialog::MouseHookProc(int nCode,
 232                                           WPARAM wParam, LPARAM lParam)
 233 {
 234     if (nCode >= 0)
 235     {
 236         MOUSEHOOKSTRUCT *mhs = (MOUSEHOOKSTRUCT *)lParam;
 237         HWND hWnd = mhs->hwnd;
 238         if ((wParam == WM_LBUTTONDOWN) ||
 239             (wParam == WM_MBUTTONDOWN) ||
 240             (wParam == WM_RBUTTONDOWN) ||
 241             (wParam == WM_MOUSEACTIVATE) ||
 242             (wParam == WM_MOUSEWHEEL) ||
 243             (wParam == WM_MOUSEHWHEEL) ||
 244             (wParam == WM_NCLBUTTONDOWN) ||
 245             (wParam == WM_NCMBUTTONDOWN) ||
 246             (wParam == WM_NCRBUTTONDOWN))
 247         {
 248             HWND blocker = AwtWindow::GetModalBlocker(AwtComponent::GetTopLevelParentForWindow(hWnd));
 249             if (::IsWindow(blocker)) {
 250                 BOOL onTaskbar = !(::WindowFromPoint(mhs->pt) == hWnd);
 251                 PopupBlockers(blocker, FALSE, ::GetForegroundWindow(), onTaskbar);
 252                 // return a nonzero value to prevent the system from passing
 253                 // the message to the target window procedure
 254                 return 1;
 255             }
 256         }
 257     }
 258 
 259     return CallNextHookEx(0, nCode, wParam, lParam);
 260 }
 261 
 262 /*
 263  * The function goes through the hierarchy of the blockers and
 264  * popups all the blockers. Note that the function starts from the top
 265  * blocker and goes down to the blocker which is the bottom one.
 266  * Using another traversal algorithm (bottom->top) may cause to flickering
 267  * as the bottom blocker will cover the top blocker for a while.
 268  */
 269 void AwtDialog::PopupBlockers(HWND blocker, BOOL isModalHook, HWND prevFGWindow, BOOL onTaskbar)
 270 {
 271     HWND nextBlocker = AwtWindow::GetModalBlocker(blocker);
 272     BOOL nextBlockerExists = ::IsWindow(nextBlocker);
 273     if (nextBlockerExists) {
 274         PopupBlockers(nextBlocker, isModalHook, prevFGWindow, onTaskbar);
 275     }
 276     PopupBlocker(blocker, nextBlocker, isModalHook, prevFGWindow, onTaskbar);
 277 }
 278 
 279 /*
 280  * The function popups the blocker, for a non-blocked blocker we need
 281  * to activate the blocker but if a blocker is blocked, then we need
 282  * to change z-order of the blocker placing the blocker under the next blocker.
 283  */
 284 void AwtDialog::PopupBlocker(HWND blocker, HWND nextBlocker, BOOL isModalHook, HWND prevFGWindow, BOOL onTaskbar)
 285 {
 286     if (blocker == AwtToolkit::GetInstance().GetHWnd()) {
 287         return;
 288     }
 289 
 290     // fix for 6494032
 291     if (isModalHook && !::IsWindowVisible(blocker)) {
 292         ::ShowWindow(blocker, SW_SHOWNA);
 293     }
 294 
 295     BOOL nextBlockerExists = ::IsWindow(nextBlocker);
 296     UINT flags = SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE;
 297 
 298     if (nextBlockerExists) {
 299         // Fix for 6829546: if blocker is a top-most window, but window isn't, then
 300         // calling ::SetWindowPos(dialog, blocker, ...) makes window top-most as well
 301         BOOL topmostNextBlocker = (::GetWindowLong(nextBlocker, GWL_EXSTYLE) & WS_EX_TOPMOST) != 0;
 302         BOOL topmostBlocker = (::GetWindowLong(blocker, GWL_EXSTYLE) & WS_EX_TOPMOST) != 0;
 303         if (!topmostNextBlocker || topmostBlocker) {
 304             ::SetWindowPos(blocker, nextBlocker, 0, 0, 0, 0, flags);
 305         } else {
 306             ::SetWindowPos(blocker, HWND_TOP, 0, 0, 0, 0, flags);
 307         }
 308     } else {
 309         ::SetWindowPos(blocker, HWND_TOP, 0, 0, 0, 0, flags);
 310         // no beep/flash if the mouse was clicked in the taskbar menu
 311         // or the dialog is currently inactive
 312         if (!isModalHook && !onTaskbar && (blocker == prevFGWindow)) {
 313             AnimateModalBlocker(blocker);
 314         }
 315         ::BringWindowToTop(blocker);
 316         ::SetForegroundWindow(blocker);
 317     }
 318 }
 319 
 320 void AwtDialog::AnimateModalBlocker(HWND window)
 321 {
 322     ::MessageBeep(MB_OK);
 323     // some heuristics: 3 times x 64 milliseconds
 324     AwtWindow::FlashWindowEx(window, 3, 64, FLASHW_CAPTION);
 325 }
 326 
 327 LRESULT CALLBACK AwtDialog::MouseHookProc_NonTT(int nCode,
 328                                                 WPARAM wParam, LPARAM lParam)
 329 {
 330     static HWND lastHWnd = NULL;
 331     if (nCode >= 0)
 332     {
 333         MOUSEHOOKSTRUCT *mhs = (MOUSEHOOKSTRUCT *)lParam;
 334         HWND hWnd = mhs->hwnd;
 335         HWND blocker = AwtWindow::GetModalBlocker(AwtComponent::GetTopLevelParentForWindow(hWnd));
 336         if (::IsWindow(blocker)) {
 337             if ((wParam == WM_MOUSEMOVE) ||
 338                 (wParam == WM_NCMOUSEMOVE))
 339             {
 340                 if (lastHWnd != hWnd) {
 341                     static HCURSOR hArrowCur = ::LoadCursor(NULL, IDC_ARROW);
 342                     ::SetCursor(hArrowCur);
 343                     lastHWnd = hWnd;
 344                 }
 345                 ::PostMessage(hWnd, WM_SETCURSOR, (WPARAM)hWnd, 0);
 346             } else if (wParam == WM_MOUSELEAVE) {
 347                 lastHWnd = NULL;
 348             }
 349 
 350             AwtDialog::MouseHookProc(nCode, wParam, lParam);
 351             return 1;
 352         }
 353     }
 354 
 355     return CallNextHookEx(0, nCode, wParam, lParam);
 356 }
 357 
 358 void AwtDialog::Show()
 359 {
 360     m_visible = true;
 361     JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
 362 
 363     BOOL locationByPlatform = env->GetBooleanField(GetTarget(env), AwtWindow::locationByPlatformID);
 364     if (locationByPlatform) {
 365          moveToDefaultLocation();
 366     }
 367     EnableTranslucency(TRUE);
 368     if (IsFocusableWindow() && (IsAutoRequestFocus() || IsFocusedWindowModalBlocker())) {
 369         ::ShowWindow(GetHWnd(), SW_SHOW);
 370     } else {
 371         ::ShowWindow(GetHWnd(), SW_SHOWNA);
 372     }
 373 }
 374 
 375 void AwtDialog::DoUpdateIcon()
 376 {
 377     AwtFrame::DoUpdateIcon();
 378     //Workaround windows bug:
 379     //Decorations are not updated correctly for owned dialogs
 380     //when changing dlg with icon <--> dlg without icon
 381     RECT winRect;
 382     RECT clientRect;
 383     ::GetWindowRect(GetHWnd(), &winRect);
 384     ::GetClientRect(GetHWnd(), &clientRect);
 385     ::MapWindowPoints(HWND_DESKTOP, GetHWnd(), (LPPOINT)&winRect, 2);
 386     HRGN winRgn = CreateRectRgnIndirect(&winRect);
 387     HRGN clientRgn = CreateRectRgnIndirect(&clientRect);
 388     ::CombineRgn(winRgn, winRgn, clientRgn, RGN_DIFF);
 389     ::RedrawWindow(GetHWnd(), NULL, winRgn, RDW_FRAME | RDW_INVALIDATE);
 390     ::DeleteObject(winRgn);
 391     ::DeleteObject(clientRgn);
 392 }
 393 
 394 HICON AwtDialog::GetEffectiveIcon(int iconType)
 395 {
 396     HWND hOwner = ::GetWindow(GetHWnd(), GW_OWNER);
 397     BOOL isResizable = ((GetStyle() & WS_THICKFRAME) != 0);
 398     BOOL smallIcon = ((iconType == ICON_SMALL) || (iconType == 2/*ICON_SMALL2*/));
 399     HICON hIcon = (smallIcon) ? GetHIconSm() : GetHIcon();
 400     if ((hIcon == NULL) && (isResizable || (hOwner == NULL))) {
 401         //Java cup icon is not loaded in window class for dialogs
 402         //It needs to be set explicitly for resizable dialogs
 403         //and ownerless dialogs
 404         hIcon = (smallIcon) ? AwtToolkit::GetInstance().GetAwtIconSm() :
 405             AwtToolkit::GetInstance().GetAwtIcon();
 406     } else if ((hIcon != NULL) && IsIconInherited() && !isResizable) {
 407         //Non-resizable dialogs without explicitely set icon
 408         //Should have no icon
 409         hIcon = NULL;
 410     }
 411     return hIcon;
 412 }
 413 
 414 void AwtDialog::CheckInstallModalHook() {
 415     VisibleModalDialogsCount++;
 416     if (VisibleModalDialogsCount == 1) {
 417         AWTModalHook = ::SetWindowsHookEx(WH_CBT, (HOOKPROC)ModalFilterProc,
 418                                          0, AwtToolkit::MainThread());
 419         AWTMouseHook = ::SetWindowsHookEx(WH_MOUSE, (HOOKPROC)MouseHookProc,
 420                                          0, AwtToolkit::MainThread());
 421     }
 422 }
 423 
 424 void AwtDialog::CheckUninstallModalHook() {
 425     if (VisibleModalDialogsCount == 1) {
 426         UnhookWindowsHookEx(AWTModalHook);
 427         UnhookWindowsHookEx(AWTMouseHook);
 428     }
 429     VisibleModalDialogsCount--;
 430 }
 431 
 432 void AwtDialog::ModalPerformActivation(HWND hWnd)
 433 {
 434     JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
 435 
 436     AwtWindow *w = (AwtWindow *)AwtComponent::GetComponent(hWnd);
 437     if ((w != NULL) && w->IsEmbeddedFrame()) {
 438         jobject target = w->GetTarget(env);
 439         env->CallVoidMethod(target, AwtFrame::activateEmbeddingTopLevelMID);
 440         env->DeleteLocalRef(target);
 441     } else {
 442         ::BringWindowToTop(hWnd);
 443         ::SetForegroundWindow(hWnd);
 444     }
 445 }
 446 
 447 void AwtDialog::ModalActivateNextWindow(HWND dialogHWnd,
 448                                         jobject dialogTarget, jobject dialogPeer)
 449 {
 450     JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
 451 
 452     jboolean exc;
 453     jlongArray windows = (jlongArray) JNU_CallStaticMethodByName
 454                                             (env,
 455                                              &exc,
 456                                              "sun/awt/windows/WWindowPeer",
 457                                              "getActiveWindowHandles",
 458                                              "(Ljava/awt/Component;)[J",
 459                                              dialogTarget).l;
 460     if (exc == JNI_TRUE) {
 461         throw std::bad_alloc();
 462     }
 463     if (windows == NULL) {
 464         return;
 465     }
 466 
 467     jboolean isCopy;
 468     jlong *ws = env->GetLongArrayElements(windows, &isCopy);
 469     if (ws == NULL) {
 470         throw std::bad_alloc();
 471     }
 472     int windowsCount = env->GetArrayLength(windows);
 473     for (int i = windowsCount - 1; i >= 0; i--) {
 474         HWND w = (HWND)ws[i];
 475         if ((w != dialogHWnd) && ModalCanBeActivated(w)) {
 476             AwtDialog::ModalPerformActivation(w);
 477             break;
 478         }
 479     }
 480     env->ReleaseLongArrayElements(windows, ws, 0);
 481 
 482     env->DeleteLocalRef(windows);
 483 }
 484 
 485 MsgRouting AwtDialog::WmShowModal()
 486 {
 487     DASSERT(::GetCurrentThreadId() == AwtToolkit::MainThread());
 488 
 489     // fix for 6213128: release capture (got by popups, choices, etc) when
 490     // modal dialog is shown
 491     HWND capturer = ::GetCapture();
 492     if (capturer != NULL) {
 493       ::ReleaseCapture();
 494     }
 495 
 496     SendMessage(WM_AWT_COMPONENT_SHOW);
 497 
 498     CheckInstallModalHook();
 499 
 500     m_modalWnd = GetHWnd();
 501 
 502     return mrConsume;
 503 }
 504 
 505 MsgRouting AwtDialog::WmEndModal()
 506 {
 507     JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
 508 
 509     DASSERT( ::GetCurrentThreadId() == AwtToolkit::MainThread() );
 510     DASSERT( ::IsWindow(m_modalWnd) );
 511 
 512     m_modalWnd = NULL;
 513 
 514     CheckUninstallModalHook();
 515 
 516     HWND parentHWnd = ::GetParent(GetHWnd());
 517     jobject peer = GetPeer(env);
 518     jobject target = GetTarget(env);
 519     if (::GetForegroundWindow() == GetHWnd()) {
 520         ModalActivateNextWindow(GetHWnd(), target, peer);
 521     }
 522     // hide the dialog
 523     SendMessage(WM_AWT_COMPONENT_HIDE);
 524 
 525     env->DeleteLocalRef(target);
 526 
 527     return mrConsume;
 528 }
 529 
 530 void AwtDialog::SetResizable(BOOL isResizable)
 531 {
 532     // call superclass
 533     AwtFrame::SetResizable(isResizable);
 534 
 535     LONG    style = GetStyle();
 536     LONG    xstyle = GetStyleEx();
 537     if (isResizable || IsUndecorated()) {
 538     // remove modal frame
 539         xstyle &= ~WS_EX_DLGMODALFRAME;
 540     } else {
 541     // add modal frame
 542         xstyle |= WS_EX_DLGMODALFRAME;
 543     }
 544     // dialogs are never minimizable/maximizable, so remove those bits
 545     style &= ~(WS_MINIMIZEBOX|WS_MAXIMIZEBOX);
 546     SetStyle(style);
 547     SetStyleEx(xstyle);
 548     RedrawNonClient();
 549 }
 550 
 551 // Adjust system menu so that:
 552 //  Non-resizable dialogs only have Move and Close items
 553 //  Resizable dialogs have the full system menu with
 554 //     Maximize, Minimize items disabled (the items
 555 //     get disabled by the native system).
 556 // This perfectly mimics the native MS Windows behavior.
 557 // Normally, Win32 dialog system menu handling is done via
 558 // CreateDialog/DefDlgProc, but our dialogs are using DefWindowProc
 559 // so we handle the system menu ourselves
 560 void AwtDialog::UpdateSystemMenu()
 561 {
 562     HWND    hWndSelf = GetHWnd();
 563     BOOL    isResizable = IsResizable();
 564 
 565     // before restoring the default menu, check if there is an
 566     // InputMethodManager menu item already.  Note that it assumes
 567     // that the length of the InputMethodManager menu item string
 568     // should not be longer than 256 bytes.
 569     MENUITEMINFO  mii;
 570     memset(&mii, 0, sizeof(MENUITEMINFO));
 571     TCHAR         immItem[256];
 572     BOOL          hasImm;
 573     mii.cbSize = sizeof(MENUITEMINFO);
 574     mii.fMask = MIIM_TYPE;
 575     mii.cch = sizeof(immItem);
 576     mii.dwTypeData = immItem;
 577     hasImm = ::GetMenuItemInfo(GetSystemMenu(hWndSelf, FALSE),
 578                                SYSCOMMAND_IMM, FALSE, &mii);
 579 
 580     // restore the default menu
 581     ::GetSystemMenu(hWndSelf, TRUE);
 582     // now get a working copy of the menu
 583     HMENU hMenuSys = GetSystemMenu(hWndSelf, FALSE);
 584 
 585     if (!isResizable) {
 586         // remove inapplicable sizing commands
 587         ::DeleteMenu(hMenuSys, SC_MINIMIZE, MF_BYCOMMAND);
 588         ::DeleteMenu(hMenuSys, SC_RESTORE, MF_BYCOMMAND);
 589         ::DeleteMenu(hMenuSys, SC_MAXIMIZE, MF_BYCOMMAND);
 590         ::DeleteMenu(hMenuSys, SC_SIZE, MF_BYCOMMAND);
 591         // remove separator if only 3 items left (Move, Separator, and Close)
 592         if (::GetMenuItemCount(hMenuSys) == 3) {
 593             MENUITEMINFO mi;
 594             memset(&mi, 0, sizeof(MENUITEMINFO));
 595             mi.cbSize = sizeof(MENUITEMINFO);
 596             mi.fMask = MIIM_TYPE;
 597             ::GetMenuItemInfo(hMenuSys, 1, TRUE, &mi);
 598             if (mi.fType & MFT_SEPARATOR) {
 599                 ::DeleteMenu(hMenuSys, 1, MF_BYPOSITION);
 600             }
 601         }
 602     }
 603 
 604     // if there was the InputMethodManager menu item, restore it.
 605     if (hasImm) {
 606         ::AppendMenu(hMenuSys, MF_STRING, SYSCOMMAND_IMM, immItem);
 607     }
 608 }
 609 
 610 // Override WmStyleChanged to adjust system menu for sizable/non-resizable dialogs
 611 MsgRouting AwtDialog::WmStyleChanged(int wStyleType, LPSTYLESTRUCT lpss)
 612 {
 613     UpdateSystemMenu();
 614     DoUpdateIcon();
 615     return mrConsume;
 616 }
 617 
 618 MsgRouting AwtDialog::WmSize(UINT type, int w, int h)
 619 {
 620     if (type == SIZE_MAXIMIZED || type == SIZE_MINIMIZED
 621             || (type == SIZE_RESTORED && !IsResizing()))
 622     {
 623         UpdateSystemMenu(); // adjust to reflect restored vs. maximized state
 624     }
 625 
 626     return AwtFrame::WmSize(type, w, h);
 627 }
 628 
 629 LRESULT AwtDialog::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
 630 {
 631     MsgRouting mr = mrDoDefault;
 632     LRESULT retValue = 0L;
 633 
 634     switch(message) {
 635         case WM_AWT_DLG_SHOWMODAL:
 636             mr = WmShowModal();
 637             break;
 638         case WM_AWT_DLG_ENDMODAL:
 639             mr = WmEndModal();
 640             break;
 641     }
 642 
 643     if (mr != mrConsume) {
 644         retValue = AwtFrame::WindowProc(message, wParam, lParam);
 645     }
 646     return retValue;
 647 }
 648 
 649 void AwtDialog::_ShowModal(void *param)
 650 {
 651     JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
 652 
 653     jobject self = (jobject)param;
 654 
 655     AwtDialog *d = NULL;
 656 
 657     PDATA pData;
 658     JNI_CHECK_PEER_GOTO(self, ret);
 659     d = (AwtDialog *)pData;
 660     if (::IsWindow(d->GetHWnd())) {
 661         d->SendMessage(WM_AWT_DLG_SHOWMODAL);
 662     }
 663 ret:
 664     env->DeleteGlobalRef(self);
 665 }
 666 
 667 void AwtDialog::_EndModal(void *param)
 668 {
 669     JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
 670 
 671     jobject self = (jobject)param;
 672 
 673     AwtDialog *d = NULL;
 674 
 675     PDATA pData;
 676     JNI_CHECK_PEER_GOTO(self, ret);
 677     d = (AwtDialog *)pData;
 678     if (::IsWindow(d->GetHWnd())) {
 679         d->SendMessage(WM_AWT_DLG_ENDMODAL);
 680     }
 681 ret:
 682     env->DeleteGlobalRef(self);
 683 }
 684 
 685 void AwtDialog::_SetIMMOption(void *param)
 686 {
 687     JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
 688 
 689     SetIMMOptionStruct *sios = (SetIMMOptionStruct *)param;
 690     jobject self = sios->dialog;
 691     jstring option = sios->option;
 692 
 693     int badAlloc = 0;
 694     LPCTSTR coption;
 695     LPCTSTR empty = TEXT("InputMethod");
 696     AwtDialog *d = NULL;
 697 
 698     PDATA pData;
 699     JNI_CHECK_PEER_GOTO(self, ret);
 700     JNI_CHECK_NULL_GOTO(option, "null IMMOption", ret);
 701 
 702     d = (AwtDialog *)pData;
 703     if (::IsWindow(d->GetHWnd()))
 704     {
 705         coption = JNU_GetStringPlatformChars(env, option, NULL);
 706         if (coption == NULL)
 707         {
 708             badAlloc = 1;
 709         }
 710         if (!badAlloc)
 711         {
 712             HMENU hSysMenu = ::GetSystemMenu(d->GetHWnd(), FALSE);
 713             ::AppendMenu(hSysMenu,  MF_STRING, SYSCOMMAND_IMM, coption);
 714 
 715             if (coption != empty)
 716             {
 717                 JNU_ReleaseStringPlatformChars(env, option, coption);
 718             }
 719         }
 720     }
 721 ret:
 722     env->DeleteGlobalRef(self);
 723     env->DeleteGlobalRef(option);
 724 
 725     delete sios;
 726 
 727     if (badAlloc)
 728     {
 729         throw std::bad_alloc();
 730     }
 731 }
 732 
 733 /************************************************************************
 734  * Dialog native methods
 735  */
 736 
 737 extern "C" {
 738 
 739 JNIEXPORT void JNICALL
 740 Java_java_awt_Dialog_initIDs(JNIEnv *env, jclass cls)
 741 {
 742     TRY;
 743 
 744     /* java.awt.Dialog fields and methods */
 745     AwtDialog::titleID
 746         = env->GetFieldID(cls, "title", "Ljava/lang/String;");
 747     DASSERT(AwtDialog::titleID != NULL);
 748     CHECK_NULL(AwtDialog::titleID);
 749 
 750     AwtDialog::undecoratedID
 751         = env->GetFieldID(cls,"undecorated","Z");
 752     DASSERT(AwtDialog::undecoratedID != NULL);
 753     CHECK_NULL(AwtDialog::undecoratedID);
 754 
 755     CATCH_BAD_ALLOC;
 756 }
 757 
 758 } /* extern "C" */
 759 
 760 
 761 /************************************************************************
 762  * DialogPeer native methods
 763  */
 764 
 765 extern "C" {
 766 
 767 /*
 768  * Class:     sun_awt_windows_WDialogPeer
 769  * Method:    create
 770  * Signature: (Lsun/awt/windows/WComponentPeer;)V
 771  */
 772 JNIEXPORT void JNICALL
 773 Java_sun_awt_windows_WDialogPeer_createAwtDialog(JNIEnv *env, jobject self,
 774                                         jobject parent)
 775 {
 776     TRY;
 777 
 778     PDATA pData;
 779     AwtToolkit::CreateComponent(self, parent,
 780                                 (AwtToolkit::ComponentFactory)
 781                                 AwtDialog::Create);
 782     JNI_CHECK_PEER_CREATION_RETURN(self);
 783 
 784     CATCH_BAD_ALLOC;
 785 }
 786 
 787 /*
 788  * Class:     sun_awt_windows_WDialogPeer
 789  * Method:    _show
 790  * Signature: ()V
 791  */
 792 JNIEXPORT void JNICALL
 793 Java_sun_awt_windows_WDialogPeer_showModal(JNIEnv *env, jobject self)
 794 {
 795     TRY;
 796 
 797     jobject selfGlobalRef = env->NewGlobalRef(self);
 798 
 799     AwtToolkit::GetInstance().SyncCall(AwtDialog::_ShowModal,
 800         (void *)selfGlobalRef);
 801     // selfGlobalRef is deleted in _ShowModal
 802 
 803     CATCH_BAD_ALLOC;
 804 }
 805 
 806 /*
 807  * Class:     sun_awt_windows_WDialogPeer
 808  * Method:    _hide
 809  * Signature: ()V
 810  */
 811 JNIEXPORT void JNICALL
 812 Java_sun_awt_windows_WDialogPeer_endModal(JNIEnv *env, jobject self)
 813 {
 814     TRY;
 815 
 816     jobject selfGlobalRef = env->NewGlobalRef(self);
 817 
 818     AwtToolkit::GetInstance().SyncCall(AwtDialog::_EndModal,
 819         (void *)selfGlobalRef);
 820     // selfGlobalRef is deleted in _EndModal
 821 
 822     CATCH_BAD_ALLOC;
 823 }
 824 
 825 /*
 826  * Class:     sun_awt_windows_WFramePeer
 827  * Method:    pSetIMMOption
 828  * Signature: (Ljava/lang/String;)V
 829  */
 830 JNIEXPORT void JNICALL
 831 Java_sun_awt_windows_WDialogPeer_pSetIMMOption(JNIEnv *env, jobject self,
 832                                                jstring option)
 833 {
 834     TRY;
 835 
 836     SetIMMOptionStruct *sios = new SetIMMOptionStruct;
 837     sios->dialog = env->NewGlobalRef(self);
 838     sios->option = (jstring)env->NewGlobalRef(option);
 839 
 840     AwtToolkit::GetInstance().SyncCall(AwtDialog::_SetIMMOption, sios);
 841     // global refs and sios are deleted in _SetIMMOption
 842 
 843     CATCH_BAD_ALLOC;
 844 }
 845 } /* extern "C" */
--- EOF ---