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      1 /*
      2  * Copyright (C) 2010 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
     14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
     17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     23  * THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "WindowedPluginTest.h"
     27 
     28 using namespace std;
     29 
     30 static const wchar_t instancePointerProperty[] = L"org.webkit.TestNetscapePlugin.WindowedPluginTest.InstancePointer";
     31 
     32 WindowedPluginTest::WindowedPluginTest(NPP npp, const string& identifier)
     33     : PluginTest(npp, identifier)
     34     , m_window(0)
     35     , m_originalWndProc(0)
     36 {
     37 }
     38 
     39 NPError WindowedPluginTest::NPP_SetWindow(NPP instance, NPWindow* window)
     40 {
     41     HWND newWindow = reinterpret_cast<HWND>(window->window);
     42     if (newWindow == m_window)
     43         return NPERR_NO_ERROR;
     44 
     45     if (m_window) {
     46         ::RemovePropW(m_window, instancePointerProperty);
     47         ::SetWindowLongPtr(m_window, GWLP_WNDPROC, reinterpret_cast<LONG_PTR>(m_originalWndProc));
     48         m_originalWndProc = 0;
     49     }
     50 
     51     m_window = newWindow;
     52     if (!m_window)
     53         return NPERR_NO_ERROR;
     54 
     55     m_originalWndProc = reinterpret_cast<WNDPROC>(::SetWindowLongPtrW(m_window, GWLP_WNDPROC, reinterpret_cast<LONG_PTR>(staticWndProc)));
     56     ::SetPropW(m_window, instancePointerProperty, this);
     57 
     58     return NPERR_NO_ERROR;
     59 }
     60 
     61 LRESULT WindowedPluginTest::staticWndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
     62 {
     63     WindowedPluginTest* instance = reinterpret_cast<WindowedPluginTest*>(::GetPropW(hwnd, instancePointerProperty));
     64 
     65     bool handled = false;
     66     LRESULT result = instance->wndProc(message, wParam, lParam, handled);
     67     if (handled)
     68         return result;
     69 
     70     return ::CallWindowProcW(instance->m_originalWndProc, hwnd, message, wParam, lParam);
     71 }
     72