pluginviewwin.cpp

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    setNPWindowRect(frameRect());

    npEvent.event = WM_PAINT;
    npEvent.wParam = reinterpret_cast<uint32>(hdc);

    // This is supposed to be a pointer to the dirty rect, but it seems that the Flash plugin
    // ignores it so we just pass null.
    npEvent.lParam = 0;

    dispatchNPEvent(npEvent);

    context->releaseWindowsContext(hdc, frameRect(), m_isTransparent);
}

void PluginView::handleKeyboardEvent(KeyboardEvent* event)
{
    NPEvent npEvent;

    npEvent.wParam = event->keyCode();    

    if (event->type() == eventNames().keydownEvent) {
        npEvent.event = WM_KEYDOWN;
        npEvent.lParam = 0;
    } else if (event->type() == eventNames().keyupEvent) {
        npEvent.event = WM_KEYUP;
        npEvent.lParam = 0x8000;
    }

    JSC::JSLock::DropAllLocks dropAllLocks(false);
    if (!dispatchNPEvent(npEvent))
        event->setDefaultHandled();
}

extern HCURSOR lastSetCursor;
extern bool ignoreNextSetCursor;

void PluginView::handleMouseEvent(MouseEvent* event)
{
    NPEvent npEvent;

    IntPoint p = static_cast<FrameView*>(parent())->contentsToWindow(IntPoint(event->pageX(), event->pageY()));

    npEvent.lParam = MAKELPARAM(p.x(), p.y());
    npEvent.wParam = 0;

    if (event->ctrlKey())
        npEvent.wParam |= MK_CONTROL;
    if (event->shiftKey())
        npEvent.wParam |= MK_SHIFT;

    if (event->type() == eventNames().mousemoveEvent ||
        event->type() == eventNames().mouseoutEvent || 
        event->type() == eventNames().mouseoverEvent) {
        npEvent.event = WM_MOUSEMOVE;
        if (event->buttonDown())
            switch (event->button()) {
                case LeftButton:
                    npEvent.wParam |= MK_LBUTTON;
                    break;
                case MiddleButton:
                    npEvent.wParam |= MK_MBUTTON;
                    break;
                case RightButton:
                    npEvent.wParam |= MK_RBUTTON;
                break;
            }
    }
    else if (event->type() == eventNames().mousedownEvent) {
        // Focus the plugin
        if (Page* page = m_parentFrame->page())
            page->focusController()->setFocusedFrame(m_parentFrame);
        m_parentFrame->document()->setFocusedNode(m_element);
        switch (event->button()) {
            case 0:
                npEvent.event = WM_LBUTTONDOWN;
                break;
            case 1:
                npEvent.event = WM_MBUTTONDOWN;
                break;
            case 2:
                npEvent.event = WM_RBUTTONDOWN;
                break;
        }
    } else if (event->type() == eventNames().mouseupEvent) {
        switch (event->button()) {
            case 0:
                npEvent.event = WM_LBUTTONUP;
                break;
            case 1:
                npEvent.event = WM_MBUTTONUP;
                break;
            case 2:
                npEvent.event = WM_RBUTTONUP;
                break;
        }
    } else
        return;

    HCURSOR currentCursor = ::GetCursor();

    JSC::JSLock::DropAllLocks dropAllLocks(false);
    if (!dispatchNPEvent(npEvent))
        event->setDefaultHandled();

#if !PLATFORM(QT)
    // Currently, Widget::setCursor is always called after this function in EventHandler.cpp
    // and since we don't want that we set ignoreNextSetCursor to true here to prevent that.
    ignoreNextSetCursor = true;     
    lastSetCursor = ::GetCursor();
#endif
}

void PluginView::setParent(ScrollView* parent)
{
    Widget::setParent(parent);

    if (parent)
        init();
    else {
        if (!platformPluginWidget())
            return;

        // If the plug-in window or one of its children have the focus, we need to 
        // clear it to prevent the web view window from being focused because that can
        // trigger a layout while the plugin element is being detached.
        HWND focusedWindow = ::GetFocus();
        if (platformPluginWidget() == focusedWindow || ::IsChild(platformPluginWidget(), focusedWindow))
            ::SetFocus(0);
    }

}

void PluginView::setParentVisible(bool visible)
{
    if (isParentVisible() == visible)
        return;

    Widget::setParentVisible(visible);

    if (isSelfVisible() && platformPluginWidget()) {
        if (visible)
            ShowWindow(platformPluginWidget(), SW_SHOWNA);
        else
            ShowWindow(platformPluginWidget(), SW_HIDE);
    }
}

void PluginView::setNPWindowRect(const IntRect& rect)
{
    if (!m_isStarted)
        return;

    IntPoint p = static_cast<FrameView*>(parent())->contentsToWindow(rect.location());
    m_npWindow.x = p.x();
    m_npWindow.y = p.y();

    m_npWindow.width = rect.width();
    m_npWindow.height = rect.height();

    m_npWindow.clipRect.left = 0;
    m_npWindow.clipRect.top = 0;
    m_npWindow.clipRect.right = rect.width();
    m_npWindow.clipRect.bottom = rect.height();

    if (m_plugin->pluginFuncs()->setwindow) {
        JSC::JSLock::DropAllLocks dropAllLocks(false);
        setCallingPlugin(true);
        m_plugin->pluginFuncs()->setwindow(m_instance, &m_npWindow);
        setCallingPlugin(false);

        if (!m_isWindowed)
            return;

        ASSERT(platformPluginWidget());

        WNDPROC currentWndProc = (WNDPROC)GetWindowLongPtr(platformPluginWidget(), GWLP_WNDPROC);
        if (currentWndProc != PluginViewWndProc)
            m_pluginWndProc = (WNDPROC)SetWindowLongPtr(platformPluginWidget(), GWLP_WNDPROC, (LONG)PluginViewWndProc);
    }
}

void PluginView::stop()
{
    if (!m_isStarted)
        return;

    HashSet<RefPtr<PluginStream> > streams = m_streams;
    HashSet<RefPtr<PluginStream> >::iterator end = streams.end();
    for (HashSet<RefPtr<PluginStream> >::iterator it = streams.begin(); it != end; ++it) {
        (*it)->stop();
        disconnectStream((*it).get());
    }

    ASSERT(m_streams.isEmpty());

    m_isStarted = false;

    // Unsubclass the window
    if (m_isWindowed) {
        WNDPROC currentWndProc = (WNDPROC)GetWindowLongPtr(platformPluginWidget(), GWLP_WNDPROC);
        
        if (currentWndProc == PluginViewWndProc)
            SetWindowLongPtr(platformPluginWidget(), GWLP_WNDPROC, (LONG)m_pluginWndProc);
    }

    JSC::JSLock::DropAllLocks dropAllLocks(false);

    // Clear the window
    m_npWindow.window = 0;
    if (m_plugin->pluginFuncs()->setwindow && !m_plugin->quirks().contains(PluginQuirkDontSetNullWindowHandleOnDestroy)) {
        setCallingPlugin(true);
        m_plugin->pluginFuncs()->setwindow(m_instance, &m_npWindow);
        setCallingPlugin(false);
    }

    PluginMainThreadScheduler::scheduler().unregisterPlugin(m_instance);

    // Destroy the plugin
    NPSavedData* savedData = 0;
    setCallingPlugin(true);
    NPError npErr = m_plugin->pluginFuncs()->destroy(m_instance, &savedData);
    setCallingPlugin(false);
    LOG_NPERROR(npErr);

    if (savedData) {
        if (savedData->buf)
            NPN_MemFree(savedData->buf);
        NPN_MemFree(savedData);
    }

    m_instance->pdata = 0;
}

const char* PluginView::userAgentStatic()
{
    return 0;
}

const char* PluginView::userAgent()
{
    if (m_plugin->quirks().contains(PluginQuirkWantsMozillaUserAgent))
        return MozillaUserAgent;

    if (m_userAgent.isNull())
        m_userAgent = m_parentFrame->loader()->userAgent(m_url).utf8();
    return m_userAgent.data();
}

NPError PluginView::handlePostReadFile(Vector<char>& buffer, uint32 len, const char* buf)
{
    String filename(buf, len);

    if (filename.startsWith("file:///"))
        filename = filename.substring(8);

    // Get file info
    WIN32_FILE_ATTRIBUTE_DATA attrs;
    if (GetFileAttributesExW(filename.charactersWithNullTermination(), GetFileExInfoStandard, &attrs) == 0)
        return NPERR_FILE_NOT_FOUND;

    if (attrs.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
        return NPERR_FILE_NOT_FOUND;

    HANDLE fileHandle = CreateFileW(filename.charactersWithNullTermination(), FILE_READ_DATA, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0);
    
    if (fileHandle == INVALID_HANDLE_VALUE)
        return NPERR_FILE_NOT_FOUND;

    buffer.resize(attrs.nFileSizeLow);

    DWORD bytesRead;
    int retval = ReadFile(fileHandle, buffer.data(), attrs.nFileSizeLow, &bytesRead, 0);

    CloseHandle(fileHandle);

    if (retval == 0 || bytesRead != attrs.nFileSizeLow)
        return NPERR_FILE_NOT_FOUND;

    return NPERR_NO_ERROR;
}

NPError PluginView::getValueStatic(NPNVariable variable, void* value)
{
    return NPERR_GENERIC_ERROR;
}

NPError PluginView::getValue(NPNVariable variable, void* value)
{
    switch (variable) {
#if ENABLE(NETSCAPE_PLUGIN_API)
        case NPNVWindowNPObject: {
            if (m_isJavaScriptPaused)
                return NPERR_GENERIC_ERROR;

            NPObject* windowScriptObject = m_parentFrame->script()->windowScriptNPObject();

            // Return value is expected to be retained, as described here: <http://www.mozilla.org/projects/plugin/npruntime.html>
            if (windowScriptObject)
                _NPN_RetainObject(windowScriptObject);

            void** v = (void**)value;
            *v = windowScriptObject;

            return NPERR_NO_ERROR;
        }

        case NPNVPluginElementNPObject: {
            if (m_isJavaScriptPaused)
                return NPERR_GENERIC_ERROR;

            NPObject* pluginScriptObject = 0;

            if (m_element->hasTagName(appletTag) || m_element->hasTagName(embedTag) || m_element->hasTagName(objectTag))
                pluginScriptObject = static_cast<HTMLPlugInElement*>(m_element)->getNPObject();

            // Return value is expected to be retained, as described here: <http://www.mozilla.org/projects/plugin/npruntime.html>
            if (pluginScriptObject)
                _NPN_RetainObject(pluginScriptObject);

            void** v = (void**)value;
            *v = pluginScriptObject;

            return NPERR_NO_ERROR;
        }
#endif

        case NPNVnetscapeWindow: {
            HWND* w = reinterpret_cast<HWND*>(value);

            *w = windowHandleForPlatformWidget(parent() ? parent()->hostWindow()->platformWindow() : 0);

            return NPERR_NO_ERROR;
        }

        case NPNVSupportsWindowless: {
            NPBool *result = reinterpret_cast<NPBool*>(value);

            *result = TRUE;
            
            return NPERR_NO_ERROR;
        }

        default:
            return NPERR_GENERIC_ERROR;
    }
}

void PluginView::invalidateRect(const IntRect& rect)
{
    if (m_isWindowed) {
        RECT invalidRect = { rect.x(), rect.y(), rect.right(), rect.bottom() };
        ::InvalidateRect(platformPluginWidget(), &invalidRect, false);
        return;
    }

    invalidateWindowlessPluginRect(rect);
}

void PluginView::invalidateRect(NPRect* rect)
{
    if (!rect) {
        invalidate();
        return;
    }

    IntRect r(rect->left, rect->top, rect->right - rect->left, rect->bottom - rect->top);

    if (m_isWindowed) {
        RECT invalidRect = { r.x(), r.y(), r.right(), r.bottom() };
        InvalidateRect(platformPluginWidget(), &invalidRect, FALSE);
    } else {
        if (m_plugin->quirks().contains(PluginQuirkThrottleInvalidate)) {
            m_invalidRects.append(r);
            if (!m_invalidateTimer.isActive())
                m_invalidateTimer.startOneShot(0.001);
        } else
            invalidateRect(r);
    }
}

void PluginView::invalidateRegion(NPRegion region)
{
    if (m_isWindowed)
        return;

    RECT r;

    if (GetRgnBox(region, &r) == 0) {
        invalidate();
        return;
    }

    IntRect rect(IntPoint(r.left, r.top), IntSize(r.right-r.left, r.bottom-r.top));
    invalidateRect(rect);
}

void PluginView::forceRedraw()
{
    if (m_isWindowed)
        ::UpdateWindow(platformPluginWidget());
    else
        ::UpdateWindow(windowHandleForPlatformWidget(parent() ? parent()->hostWindow()->platformWindow() : 0));
}

PluginView::~PluginView()
{
    stop();

    deleteAllValues(m_requests);

    freeStringArray(m_paramNames, m_paramCount);
    freeStringArray(m_paramValues, m_paramCount);

    if (platformPluginWidget())
        DestroyWindow(platformPluginWidget());

    m_parentFrame->script()->cleanupScriptObjectsForPlugin(this);

    if (m_plugin && !m_plugin->quirks().contains(PluginQuirkDontUnloadPlugin))
        m_plugin->unload();
}

void PluginView::init()
{
    if (m_haveInitialized)
        return;
    m_haveInitialized = true;

    if (!m_plugin) {
        ASSERT(m_status == PluginStatusCanNotFindPlugin);
        return;
    }

    if (!m_plugin->load()) {
        m_plugin = 0;
        m_status = PluginStatusCanNotLoadPlugin;
        return;
    }

    if (!start()) {
        m_status = PluginStatusCanNotLoadPlugin;
        return;
    }

    if (m_isWindowed) {
        registerPluginView();
        setUpOffscreenPaintingHooks(hookedBeginPaint, hookedEndPaint);

        DWORD flags = WS_CHILD;
        if (isSelfVisible())
            flags |= WS_VISIBLE;

        HWND parentWindowHandle = windowHandleForPlatformWidget(m_parentFrame->view()->hostWindow()->platformWindow());
        HWND window = ::CreateWindowEx(0, kWebPluginViewdowClassName, 0, flags,
                                       0, 0, 0, 0, parentWindowHandle, 0, Page::instanceHandle(), 0);
#if PLATFORM(WIN_OS) && PLATFORM(QT)
        m_window = window;
#else
        setPlatformWidget(window);
#endif

        // Calling SetWindowLongPtrA here makes the window proc ASCII, which is required by at least
        // the Shockwave Director plug-in.
#if PLATFORM(WIN_OS) && PLATFORM(X86_64) && COMPILER(MSVC)
        ::SetWindowLongPtrA(platformPluginWidget(), GWLP_WNDPROC, (LONG_PTR)DefWindowProcA);
#else
        ::SetWindowLongPtrA(platformPluginWidget(), GWL_WNDPROC, (LONG)DefWindowProcA);
#endif
        SetProp(platformPluginWidget(), kWebPluginViewProperty, this);

        m_npWindow.type = NPWindowTypeWindow;
        m_npWindow.window = platformPluginWidget();
    } else {
        m_npWindow.type = NPWindowTypeDrawable;
        m_npWindow.window = 0;
    }

    if (!m_plugin->quirks().contains(PluginQuirkDeferFirstSetWindowCall))
        setNPWindowRect(frameRect());

    m_status = PluginStatusLoadedSuccessfully;
}

} // namespace WebCore