/
WebView.cpp
669 lines (554 loc) · 19.1 KB
/
WebView.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
/*
* Copyright (C) 2010 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "WebView.h"
#include "ChunkedUpdateDrawingAreaProxy.h"
#include "FindIndicator.h"
#include "RunLoop.h"
#include "NativeWebKeyboardEvent.h"
#include "WebContextMenuProxy.h"
#include "WebEditCommandProxy.h"
#include "WebEventFactory.h"
#include "WebPageNamespace.h"
#include "WebPageProxy.h"
#include "WebPopupMenuProxyWin.h"
#include <Commctrl.h>
#include <WebCore/Cursor.h>
#include <WebCore/FloatRect.h>
#include <WebCore/IntRect.h>
#include <WebCore/WebCoreInstanceHandle.h>
#include <WebCore/WindowMessageBroadcaster.h>
#include <wtf/text/WTFString.h>
using namespace WebCore;
namespace WebKit {
static const LPCWSTR kWebKit2WebViewWindowClassName = L"WebKit2WebViewWindowClass";
// Constants not available on all platforms.
const int WM_XP_THEMECHANGED = 0x031A;
const int WM_VISTA_MOUSEHWHEEL = 0x020E;
static const int kMaxToolTipWidth = 250;
enum {
UpdateActiveStateTimer = 1,
};
LRESULT CALLBACK WebView::WebViewWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
LONG_PTR longPtr = ::GetWindowLongPtr(hWnd, 0);
if (WebView* webView = reinterpret_cast<WebView*>(longPtr))
return webView->wndProc(hWnd, message, wParam, lParam);
if (message == WM_CREATE) {
LPCREATESTRUCT createStruct = reinterpret_cast<LPCREATESTRUCT>(lParam);
// Associate the WebView with the window.
::SetWindowLongPtr(hWnd, 0, (LONG_PTR)createStruct->lpCreateParams);
return 0;
}
return ::DefWindowProc(hWnd, message, wParam, lParam);
}
LRESULT WebView::wndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
LRESULT lResult = 0;
bool handled = true;
switch (message) {
case WM_CLOSE:
m_page->tryClose();
break;
case WM_DESTROY:
m_isBeingDestroyed = true;
close();
break;
case WM_ERASEBKGND:
lResult = 1;
break;
case WM_PAINT:
lResult = onPaintEvent(hWnd, message, wParam, lParam, handled);
break;
case WM_PRINTCLIENT:
lResult = onPrintClientEvent(hWnd, message, wParam, lParam, handled);
break;
case WM_MOUSEMOVE:
case WM_LBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_RBUTTONDOWN:
case WM_LBUTTONDBLCLK:
case WM_MBUTTONDBLCLK:
case WM_RBUTTONDBLCLK:
case WM_LBUTTONUP:
case WM_MBUTTONUP:
case WM_RBUTTONUP:
case WM_MOUSELEAVE:
lResult = onMouseEvent(hWnd, message, wParam, lParam, handled);
break;
case WM_MOUSEWHEEL:
case WM_VISTA_MOUSEHWHEEL:
lResult = onWheelEvent(hWnd, message, wParam, lParam, handled);
break;
case WM_SYSKEYDOWN:
case WM_KEYDOWN:
case WM_SYSCHAR:
case WM_CHAR:
case WM_SYSKEYUP:
case WM_KEYUP:
lResult = onKeyEvent(hWnd, message, wParam, lParam, handled);
break;
case WM_SIZE:
lResult = onSizeEvent(hWnd, message, wParam, lParam, handled);
break;
case WM_WINDOWPOSCHANGED:
lResult = onWindowPositionChangedEvent(hWnd, message, wParam, lParam, handled);
break;
case WM_SETFOCUS:
lResult = onSetFocusEvent(hWnd, message, wParam, lParam, handled);
break;
case WM_KILLFOCUS:
lResult = onKillFocusEvent(hWnd, message, wParam, lParam, handled);
break;
case WM_TIMER:
lResult = onTimerEvent(hWnd, message, wParam, lParam, handled);
break;
case WM_SHOWWINDOW:
lResult = onShowWindowEvent(hWnd, message, wParam, lParam, handled);
break;
case WM_SETCURSOR:
lResult = onSetCursor(hWnd, message, wParam, lParam, handled);
break;
default:
handled = false;
break;
}
if (!handled)
lResult = ::DefWindowProc(hWnd, message, wParam, lParam);
return lResult;
}
bool WebView::registerWebViewWindowClass()
{
static bool haveRegisteredWindowClass = false;
if (haveRegisteredWindowClass)
return true;
haveRegisteredWindowClass = true;
WNDCLASSEX wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_DBLCLKS;
wcex.lpfnWndProc = WebView::WebViewWndProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = sizeof(WebView*);
wcex.hInstance = instanceHandle();
wcex.hIcon = 0;
wcex.hCursor = ::LoadCursor(0, IDC_ARROW);
wcex.hbrBackground = 0;
wcex.lpszMenuName = 0;
wcex.lpszClassName = kWebKit2WebViewWindowClassName;
wcex.hIconSm = 0;
return !!::RegisterClassEx(&wcex);
}
WebView::WebView(RECT rect, WebPageNamespace* pageNamespace, HWND parentWindow)
: m_rect(rect)
, m_topLevelParentWindow(0)
, m_toolTipWindow(0)
, m_lastCursorSet(0)
, m_webCoreCursor(0)
, m_overrideCursor(0)
, m_trackingMouseLeave(false)
, m_isBeingDestroyed(false)
{
registerWebViewWindowClass();
m_page = pageNamespace->createWebPage();
m_page->setPageClient(this);
m_page->setDrawingArea(ChunkedUpdateDrawingAreaProxy::create(this));
m_window = ::CreateWindowEx(0, kWebKit2WebViewWindowClassName, 0, WS_CHILD | WS_CLIPSIBLINGS | WS_CLIPCHILDREN,
rect.top, rect.left, rect.right - rect.left, rect.bottom - rect.top, parentWindow ? parentWindow : HWND_MESSAGE, 0, instanceHandle(), this);
ASSERT(::IsWindow(m_window));
m_page->initializeWebPage(IntRect(rect).size());
::ShowWindow(m_window, SW_SHOW);
// FIXME: Initializing the tooltip window here matches WebKit win, but seems like something
// we could do on demand to save resources.
initializeToolTipWindow();
// Initialize the top level parent window and register it with the WindowMessageBroadcaster.
windowAncestryDidChange();
}
WebView::~WebView()
{
// Tooltip window needs to be explicitly destroyed since it isn't a WS_CHILD.
if (::IsWindow(m_toolTipWindow))
::DestroyWindow(m_toolTipWindow);
}
void WebView::setParentWindow(HWND parentWindow)
{
if (m_window) {
// If the host window hasn't changed, bail.
if (::GetParent(m_window) == parentWindow)
return;
if (parentWindow)
::SetParent(m_window, parentWindow);
else if (!m_isBeingDestroyed) {
// Turn the WebView into a message-only window so it will no longer be a child of the
// old parent window and will be hidden from screen. We only do this when
// isBeingDestroyed() is false because doing this while handling WM_DESTROY can leave
// m_window in a weird state (see <http://webkit.org/b/29337>).
::SetParent(m_window, HWND_MESSAGE);
}
}
windowAncestryDidChange();
}
static HWND findTopLevelParentWindow(HWND window)
{
if (!window)
return 0;
HWND current = window;
for (HWND parent = GetParent(current); current; current = parent, parent = GetParent(parent)) {
if (!parent || !(GetWindowLongPtr(current, GWL_STYLE) & (WS_POPUP | WS_CHILD)))
return current;
}
ASSERT_NOT_REACHED();
return 0;
}
void WebView::windowAncestryDidChange()
{
HWND newTopLevelParentWindow;
if (m_window)
newTopLevelParentWindow = findTopLevelParentWindow(m_window);
else {
// There's no point in tracking active state changes of our parent window if we don't have
// a window ourselves.
newTopLevelParentWindow = 0;
}
if (newTopLevelParentWindow == m_topLevelParentWindow)
return;
if (m_topLevelParentWindow)
WindowMessageBroadcaster::removeListener(m_topLevelParentWindow, this);
m_topLevelParentWindow = newTopLevelParentWindow;
if (m_topLevelParentWindow)
WindowMessageBroadcaster::addListener(m_topLevelParentWindow, this);
updateActiveState();
}
LRESULT WebView::onMouseEvent(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam, bool& handled)
{
switch (message) {
case WM_LBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_RBUTTONDOWN:
::SetFocus(m_window);
::SetCapture(m_window);
break;
case WM_LBUTTONUP:
case WM_MBUTTONUP:
case WM_RBUTTONUP:
::ReleaseCapture();
break;
case WM_MOUSEMOVE:
startTrackingMouseLeave();
break;
case WM_MOUSELEAVE:
stopTrackingMouseLeave();
break;
case WM_LBUTTONDBLCLK:
case WM_MBUTTONDBLCLK:
case WM_RBUTTONDBLCLK:
break;
default:
ASSERT_NOT_REACHED();
}
WebMouseEvent mouseEvent = WebEventFactory::createWebMouseEvent(hWnd, message, wParam, lParam);
m_page->handleMouseEvent(mouseEvent);
handled = true;
return 0;
}
LRESULT WebView::onWheelEvent(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam, bool& handled)
{
WebWheelEvent wheelEvent = WebEventFactory::createWebWheelEvent(hWnd, message, wParam, lParam);
if (wheelEvent.controlKey()) {
// We do not want WebKit to handle Control + Wheel, this should be handled by the client application
// to zoom the page.
handled = false;
return 0;
}
m_page->handleWheelEvent(wheelEvent);
handled = true;
return 0;
}
LRESULT WebView::onKeyEvent(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam, bool& handled)
{
m_page->handleKeyboardEvent(NativeWebKeyboardEvent(hWnd, message, wParam, lParam));
// We claim here to always have handled the event. If the event is not in fact handled, we will
// find out later in didNotHandleKeyEvent.
handled = true;
return 0;
}
LRESULT WebView::onPaintEvent(HWND hWnd, UINT message, WPARAM, LPARAM, bool& handled)
{
PAINTSTRUCT paintStruct;
HDC hdc = ::BeginPaint(m_window, &paintStruct);
m_page->drawingArea()->paint(IntRect(paintStruct.rcPaint), hdc);
::EndPaint(m_window, &paintStruct);
handled = true;
return 0;
}
LRESULT WebView::onPrintClientEvent(HWND hWnd, UINT, WPARAM wParam, LPARAM, bool& handled)
{
HDC hdc = reinterpret_cast<HDC>(wParam);
RECT winRect;
::GetClientRect(hWnd, &winRect);
IntRect rect = winRect;
m_page->drawingArea()->paint(rect, hdc);
handled = true;
return 0;
}
LRESULT WebView::onSizeEvent(HWND, UINT, WPARAM, LPARAM lParam, bool& handled)
{
int width = LOWORD(lParam);
int height = HIWORD(lParam);
m_page->drawingArea()->setSize(IntSize(width, height));
handled = true;
return 0;
}
LRESULT WebView::onWindowPositionChangedEvent(HWND, UINT, WPARAM, LPARAM lParam, bool& handled)
{
if (reinterpret_cast<WINDOWPOS*>(lParam)->flags & SWP_SHOWWINDOW)
updateActiveStateSoon();
handled = false;
return 0;
}
LRESULT WebView::onSetFocusEvent(HWND, UINT, WPARAM, LPARAM lParam, bool& handled)
{
m_page->setFocused(true);
handled = true;
return 0;
}
LRESULT WebView::onKillFocusEvent(HWND, UINT, WPARAM, LPARAM lParam, bool& handled)
{
m_page->setFocused(false);
handled = true;
return 0;
}
LRESULT WebView::onTimerEvent(HWND hWnd, UINT, WPARAM wParam, LPARAM, bool& handled)
{
switch (wParam) {
case UpdateActiveStateTimer:
::KillTimer(hWnd, UpdateActiveStateTimer);
updateActiveState();
break;
}
handled = true;
return 0;
}
LRESULT WebView::onShowWindowEvent(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam, bool& handled)
{
// lParam is 0 when the message is sent because of a ShowWindow call.
// FIXME: Is WM_SHOWWINDOW sent when ShowWindow is called on an ancestor of our window?
if (!lParam) {
bool isVisible = wParam;
// Notify the drawing area that the visibility changed.
m_page->drawingArea()->setPageIsVisible(isVisible);
handled = true;
}
return 0;
}
LRESULT WebView::onSetCursor(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam, bool& handled)
{
handled = ::SetCursor(m_lastCursorSet);
return 0;
}
bool WebView::isActive()
{
HWND activeWindow = ::GetActiveWindow();
return (activeWindow && m_topLevelParentWindow == findTopLevelParentWindow(activeWindow));
}
void WebView::updateActiveState()
{
m_page->setActive(isActive());
}
void WebView::updateActiveStateSoon()
{
// This function is called while processing the WM_NCACTIVATE message.
// While processing WM_NCACTIVATE when we are being deactivated, GetActiveWindow() will
// still return our window. If we were to call updateActiveState() in that case, we would
// wrongly think that we are still the active window. To work around this, we update our
// active state after a 0-delay timer fires, at which point GetActiveWindow() will return
// the newly-activated window.
::SetTimer(m_window, UpdateActiveStateTimer, 0, 0);
}
static bool initCommonControls()
{
static bool haveInitialized = false;
if (haveInitialized)
return true;
INITCOMMONCONTROLSEX init;
init.dwSize = sizeof(init);
init.dwICC = ICC_TREEVIEW_CLASSES;
haveInitialized = !!::InitCommonControlsEx(&init);
return haveInitialized;
}
void WebView::initializeToolTipWindow()
{
if (!initCommonControls())
return;
m_toolTipWindow = ::CreateWindowEx(WS_EX_TRANSPARENT, TOOLTIPS_CLASS, 0, WS_POPUP | TTS_NOPREFIX | TTS_ALWAYSTIP,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
m_window, 0, 0, 0);
if (!m_toolTipWindow)
return;
TOOLINFO info = {0};
info.cbSize = sizeof(info);
info.uFlags = TTF_IDISHWND | TTF_SUBCLASS;
info.uId = reinterpret_cast<UINT_PTR>(m_window);
::SendMessage(m_toolTipWindow, TTM_ADDTOOL, 0, reinterpret_cast<LPARAM>(&info));
::SendMessage(m_toolTipWindow, TTM_SETMAXTIPWIDTH, 0, kMaxToolTipWidth);
::SetWindowPos(m_toolTipWindow, HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE);
}
void WebView::startTrackingMouseLeave()
{
if (m_trackingMouseLeave)
return;
m_trackingMouseLeave = true;
TRACKMOUSEEVENT trackMouseEvent;
trackMouseEvent.cbSize = sizeof(TRACKMOUSEEVENT);
trackMouseEvent.dwFlags = TME_LEAVE;
trackMouseEvent.hwndTrack = m_window;
::TrackMouseEvent(&trackMouseEvent);
}
void WebView::stopTrackingMouseLeave()
{
if (!m_trackingMouseLeave)
return;
m_trackingMouseLeave = false;
TRACKMOUSEEVENT trackMouseEvent;
trackMouseEvent.cbSize = sizeof(TRACKMOUSEEVENT);
trackMouseEvent.dwFlags = TME_LEAVE | TME_CANCEL;
trackMouseEvent.hwndTrack = m_window;
::TrackMouseEvent(&trackMouseEvent);
}
void WebView::close()
{
setParentWindow(0);
m_page->close();
}
// PageClient
void WebView::processDidCrash()
{
}
void WebView::didRelaunchProcess()
{
}
void WebView::takeFocus(bool)
{
}
void WebView::toolTipChanged(const String&, const String& newToolTip)
{
if (!m_toolTipWindow)
return;
if (!newToolTip.isEmpty()) {
// This is necessary because String::charactersWithNullTermination() is not const.
String toolTip = newToolTip;
TOOLINFO info = {0};
info.cbSize = sizeof(info);
info.uFlags = TTF_IDISHWND;
info.uId = reinterpret_cast<UINT_PTR>(m_window);
info.lpszText = const_cast<UChar*>(toolTip.charactersWithNullTermination());
::SendMessage(m_toolTipWindow, TTM_UPDATETIPTEXT, 0, reinterpret_cast<LPARAM>(&info));
}
::SendMessage(m_toolTipWindow, TTM_ACTIVATE, !newToolTip.isEmpty(), 0);
}
void WebView::updateNativeCursor()
{
// We only show the override cursor if the default (arrow) cursor is showing.
static HCURSOR arrowCursor = ::LoadCursor(0, IDC_ARROW);
if (m_overrideCursor && m_webCoreCursor == arrowCursor)
m_lastCursorSet = m_overrideCursor;
else
m_lastCursorSet = m_webCoreCursor;
::SetCursor(m_lastCursorSet);
}
void WebView::setCursor(const WebCore::Cursor& cursor)
{
if (!cursor.platformCursor()->nativeCursor())
return;
m_webCoreCursor = cursor.platformCursor()->nativeCursor();
updateNativeCursor();
}
void WebView::setOverrideCursor(HCURSOR overrideCursor)
{
m_overrideCursor = overrideCursor;
updateNativeCursor();
}
void WebView::setViewportArguments(const WebCore::ViewportArguments&)
{
}
void WebView::registerEditCommand(PassRefPtr<WebEditCommandProxy>, WebPageProxy::UndoOrRedo)
{
}
void WebView::clearAllEditCommands()
{
}
void WebView::setEditCommandState(const String&, bool, int)
{
}
FloatRect WebView::convertToDeviceSpace(const FloatRect& rect)
{
return rect;
}
FloatRect WebView::convertToUserSpace(const FloatRect& rect)
{
return rect;
}
void WebView::didNotHandleKeyEvent(const NativeWebKeyboardEvent& event)
{
// Calling ::DefWindowProcW will ensure that pressing the Alt key will generate a WM_SYSCOMMAND
// event, e.g. See <http://webkit.org/b/47671>.
::DefWindowProcW(event.nativeEvent()->hwnd, event.nativeEvent()->message, event.nativeEvent()->wParam, event.nativeEvent()->lParam);
}
PassRefPtr<WebPopupMenuProxy> WebView::createPopupMenuProxy()
{
return WebPopupMenuProxyWin::create();
}
PassRefPtr<WebContextMenuProxy> WebView::createContextMenuProxy(WebPageProxy*)
{
// FIXME: Implement.
return 0;
}
void WebView::setFindIndicator(PassRefPtr<FindIndicator>, bool fadeOut)
{
// FIXME: Implement.
}
#if USE(ACCELERATED_COMPOSITING)
void WebView::pageDidEnterAcceleratedCompositing()
{
}
void WebView::pageDidLeaveAcceleratedCompositing()
{
}
#endif // USE(ACCELERATED_COMPOSITING)
HWND WebView::nativeWindow()
{
return m_window;
}
// WebCore::WindowMessageListener
void WebView::windowReceivedMessage(HWND, UINT message, WPARAM wParam, LPARAM)
{
switch (message) {
case WM_NCACTIVATE:
updateActiveStateSoon();
break;
case WM_SETTINGCHANGE:
// systemParameterChanged(wParam);
break;
}
}
} // namespace WebKit