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      1 /*
      2  * Copyright (C) 2008 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. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef HostWindow_h
     27 #define HostWindow_h
     28 
     29 #include <wtf/Noncopyable.h>
     30 #include "Widget.h"
     31 
     32 namespace WebCore {
     33 
     34 class HostWindow : public Noncopyable {
     35 public:
     36     virtual ~HostWindow() { }
     37 
     38     // The repaint method asks the host window to repaint a rect in the window's coordinate space.  The
     39     // contentChanged boolean indicates whether or not the Web page content actually changed (or if a repaint
     40     // of unchanged content is being requested).
     41     virtual void repaint(const IntRect&, bool contentChanged, bool immediate = false, bool repaintContentOnly = false) = 0;
     42     virtual void scroll(const IntSize& scrollDelta, const IntRect& rectToScroll, const IntRect& clipRect) = 0;
     43 
     44     // The paint method just causes a synchronous update of the window to happen for platforms that need it (Windows).
     45     void paint() { repaint(IntRect(), false, true); }
     46 
     47     // Methods for doing coordinate conversions to and from screen coordinates.
     48     virtual IntPoint screenToWindow(const IntPoint&) const = 0;
     49     virtual IntRect windowToScreen(const IntRect&) const = 0;
     50 
     51     // Method for retrieving the native client of the page.
     52     virtual PlatformPageClient platformPageClient() const = 0;
     53 
     54     // For scrolling a rect into view recursively.  Useful in the cases where a WebView is embedded inside some containing
     55     // platform-specific ScrollView.
     56     virtual void scrollRectIntoView(const IntRect&, const ScrollView*) const = 0;
     57 
     58     // To notify WebKit of scrollbar mode changes.
     59     virtual void scrollbarsModeDidChange() const = 0;
     60 };
     61 
     62 } // namespace WebCore
     63 
     64 #endif // HostWindow_h
     65