static LRESULT CALLBACK UserWindowWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
Win32UserWindow* window = Win32UserWindow::FromWindow(hWnd);
if (!window)
return DefWindowProc(hWnd, message, wParam, lParam);
LRESULT handled = 0;
if (window->HasTransparentBackground())
{
if (message == WM_ERASEBKGND)
{
handled = 1;
}
else if (message == WM_TIMER && wParam == window->GetTimer())
{
window->UpdateBitmap();
handled = 1;
}
else
{
IWebView* webView = window->GetWebView();
if (webView)
{
handled = webView->forwardingWindowProc(
reinterpret_cast<OLE_HANDLE>(hWnd), message, wParam, lParam);
// WebKit sometimes causes WM_PAINT messages to fire. We need to ensure
// we call DefWindowProc in this case, otherwise Windows will assume
// that it was not handled and continue to flood us with WM_PAINT messages.
if (message == WM_PAINT)
{
// Calling UpdateBitmap here, assures smooth resizing.
window->UpdateBitmap();
handled = 0;
}
}
}
}
switch (message)
{
case WM_CLOSE:
if (!window->Close())
handled = 1;
break;
case WM_GETMINMAXINFO:
window->GetMinMaxInfo((MINMAXINFO*) lParam);
handled = 1;
break;
case WM_SIZE:
window->FireEvent(Event::RESIZED);
if (wParam == SIZE_MAXIMIZED)
{
window->FireEvent(Event::MAXIMIZED);
window->ResizeSubViews();
}
else if (wParam == SIZE_MINIMIZED)
{
window->FireEvent(Event::MINIMIZED);
}
else
{
window->ResizeSubViews();
}
handled = 1;
break;
case WM_SETFOCUS:
// The focus event will be fired by the UIDelegate
window->Focus(); // Focus the WebView and not the main window.
handled = 1;
break;
case WM_MOVE:
window->FireEvent(Event::MOVED);
break;
case WM_SHOWWINDOW:
window->FireEvent(((BOOL)wParam) ? Event::SHOWN : Event::HIDDEN);
break;
case WM_MENUCOMMAND:
{
HMENU nativeMenu = (HMENU) lParam;
UINT position = (UINT) wParam;
UINT itemId = GetMenuItemID(nativeMenu, position);
if (itemId == WEB_INSPECTOR_MENU_ITEM_ID)
{
handled = 1;
window->ShowInspector(false);
}
else
{
handled = Win32MenuItem::HandleClickEvent(nativeMenu, position);
}
}
break;
}
if (!handled)
return DefWindowProc(hWnd, message, wParam, lParam);
else
return handled;
}
