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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 "PlatformWebView.h"
     27 
     28 #include "WindowMessageObserver.h"
     29 
     30 namespace TestWebKitAPI {
     31 
     32 static const wchar_t* hostWindowClassName = L"org.WebKit.TestWebKitAPI.PlatformWebViewHostWindow";
     33 static const wchar_t* webViewPointerProperty = L"org.WebKit.TestWebKitAPI.PlatformWebView.InstancePointer";
     34 
     35 // These offsets come from rom <http://msdn.microsoft.com/en-us/library/ms646280(VS.85).aspx>.
     36 static const size_t repeatCountBitOffset = 0;
     37 static const size_t scanCodeBitOffset = 16;
     38 static const size_t contextCodeBitOffset = 29;
     39 static const size_t previousStateBitOffset = 30;
     40 static const size_t transitionStateBitOffset = 31;
     41 
     42 void PlatformWebView::registerWindowClass()
     43 {
     44     static bool initialized;
     45     if (initialized)
     46         return;
     47     initialized = true;
     48 
     49     WNDCLASSEXW wndClass = {0};
     50     wndClass.cbSize = sizeof(wndClass);
     51     wndClass.style = CS_HREDRAW | CS_VREDRAW;
     52     wndClass.lpfnWndProc = wndProc;
     53     wndClass.hCursor = LoadCursor(0, IDC_ARROW);
     54     wndClass.lpszClassName = hostWindowClassName;
     55 
     56     ::RegisterClassExW(&wndClass);
     57 }
     58 
     59 PlatformWebView::PlatformWebView(WKContextRef contextRef, WKPageGroupRef pageGroupRef)
     60     : m_parentWindowMessageObserver(0)
     61 {
     62     registerWindowClass();
     63 
     64     RECT viewRect = {0, 0, 800, 600};
     65     m_window = CreateWindowExW(0, hostWindowClassName, L"TestWebKitAPI", WS_OVERLAPPEDWINDOW, viewRect.left, viewRect.top, viewRect.right, viewRect.bottom, 0, 0, 0, this);
     66     m_view = WKViewCreate(viewRect, contextRef, pageGroupRef, m_window);
     67 }
     68 
     69 PlatformWebView::~PlatformWebView()
     70 {
     71     ::DestroyWindow(m_window);
     72     WKRelease(m_view);
     73 }
     74 
     75 WKPageRef PlatformWebView::page() const
     76 {
     77     return WKViewGetPage(m_view);
     78 }
     79 
     80 void PlatformWebView::resizeTo(unsigned width, unsigned height)
     81 {
     82     ::SetWindowPos(WKViewGetWindow(m_view), 0, 0, 0, width, height, SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOCOPYBITS);
     83 }
     84 
     85 void PlatformWebView::simulateSpacebarKeyPress()
     86 {
     87     HWND window = WKViewGetWindow(m_view);
     88 
     89     // These values match what happens when you press the spacebar in Notepad, as observed by Spy++.
     90     ::SendMessageW(window, WM_KEYDOWN, VK_SPACE, (1 << repeatCountBitOffset) | (39 << scanCodeBitOffset));
     91     ::SendMessageW(window, WM_CHAR, ' ', (1 << repeatCountBitOffset) | (39 << scanCodeBitOffset));
     92     ::SendMessageW(window, WM_KEYUP, VK_SPACE, (1 << repeatCountBitOffset) | (39 << scanCodeBitOffset) | (1 << previousStateBitOffset) | (1 << transitionStateBitOffset));
     93 }
     94 
     95 void PlatformWebView::simulateAKeyDown()
     96 {
     97     HWND window = WKViewGetWindow(m_view);
     98 
     99     // These values match what happens when you press the 'A' key in Notepad, as observed by Spy++.
    100     ::SendMessageW(window, WM_KEYDOWN, 'A', (1 << repeatCountBitOffset) | (30 << scanCodeBitOffset));
    101 }
    102 
    103 void PlatformWebView::simulateAltKeyPress()
    104 {
    105     HWND window = WKViewGetWindow(m_view);
    106 
    107     // These values match what happens when you press the Alt key in Notepad, as observed by Spy++.
    108     ::SendMessageW(window, WM_SYSKEYDOWN, VK_MENU, (1 << repeatCountBitOffset) | (38 << scanCodeBitOffset) | (1 << contextCodeBitOffset));
    109     ::SendMessageW(window, WM_SYSKEYUP, VK_MENU, (1 << repeatCountBitOffset) | (38 << scanCodeBitOffset) | (1 << previousStateBitOffset) | (1 << transitionStateBitOffset));
    110 }
    111 
    112 void PlatformWebView::simulateRightClick(unsigned x, unsigned y)
    113 {
    114     HWND window = WKViewGetWindow(m_view);
    115 
    116     ::SendMessageW(window, WM_RBUTTONDOWN, 0, MAKELPARAM(x, y));
    117     ::SendMessageW(window, WM_RBUTTONUP, 0, MAKELPARAM(x, y));
    118 }
    119 
    120 LRESULT PlatformWebView::wndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
    121 {
    122     PlatformWebView* webView;
    123     if (message == WM_CREATE) {
    124         CREATESTRUCT* createStruct = reinterpret_cast<CREATESTRUCT*>(lParam);
    125         webView = static_cast<PlatformWebView*>(createStruct->lpCreateParams);
    126         ::SetPropW(hWnd, webViewPointerProperty, webView);
    127     } else
    128         webView = reinterpret_cast<PlatformWebView*>(::GetPropW(hWnd, webViewPointerProperty));
    129 
    130     if (webView && webView->m_parentWindowMessageObserver)
    131         webView->m_parentWindowMessageObserver->windowReceivedMessage(hWnd, message, wParam, lParam);
    132 
    133     if (message == WM_NCDESTROY)
    134         ::RemovePropW(hWnd, webViewPointerProperty);
    135 
    136     return ::DefWindowProcW(hWnd, message, wParam, lParam);
    137 }
    138 
    139 } // namespace TestWebKitAPI
    140