1 /*

     2  * Copyright (C) 2007 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  *

     8  * 1.  Redistributions of source code must retain the above copyright

     9  *     notice, this list of conditions and the following disclaimer. 

    10  * 2.  Redistributions in binary form must reproduce the above copyright

    11  *     notice, this list of conditions and the following disclaimer in the

    12  *     documentation and/or other materials provided with the distribution. 

    13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of

    14  *     its contributors may be used to endorse or promote products derived

    15  *     from this software without specific prior written permission. 

    16  *

    17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY

    18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

    19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

    20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY

    21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

    22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

    23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

    24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

    26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    27  */

    28 

    29 #ifndef WebNodeHighlight_h

    30 #define WebNodeHighlight_h

    31 

    32 #pragma warning(push, 0)

    33 #include <WebCore/WindowMessageListener.h>

    34 #pragma warning(pop)

    35 

    36 #include <windows.h>

    37 

    38 class WebView;

    39 

    40 class WebNodeHighlight : WebCore::WindowMessageListener {

    41 public:

    42     WebNodeHighlight(WebView*);

    43     ~WebNodeHighlight();

    44 

    45     void setShowsWhileWebViewIsVisible(bool);

    46 

    47     bool isShowing() const;

    48 

    49     void update();

    50 

    51     void placeBehindWindow(HWND);

    52 

    53 private:

    54     void show();

    55     void hide();

    56 

    57     bool isWebViewVisible() const;

    58 

    59     virtual void windowReceivedMessage(HWND, UINT message, WPARAM, LPARAM);

    60 

    61     void onWebViewShowWindow(bool showing);

    62     void onWebViewWindowPosChanged(WINDOWPOS*);

    63     void onRootWindowPosChanged(WINDOWPOS*);

    64 

    65     WebView* m_inspectedWebView;

    66     HWND m_inspectedWebViewWindow;

    67     HWND m_overlay;

    68     HWND m_observedWindow;

    69     bool m_showsWhileWebViewIsVisible;

    70 

    71     friend static LRESULT CALLBACK OverlayWndProc(HWND, UINT, WPARAM, LPARAM);

    72 };

    73 

    74 #endif // !defined(WebNodeHighlight_h)