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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 #ifndef FindController_h
     27 #define FindController_h
     28 
     29 #include "PageOverlay.h"
     30 #include "WebFindOptions.h"
     31 #include <wtf/Forward.h>
     32 #include <wtf/Noncopyable.h>
     33 #include <wtf/Vector.h>
     34 
     35 namespace WebCore {
     36     class Frame;
     37     class IntRect;
     38 }
     39 
     40 namespace WebKit {
     41 
     42 class WebPage;
     43 
     44 class FindController : private PageOverlay::Client {
     45     WTF_MAKE_NONCOPYABLE(FindController);
     46 
     47 public:
     48     explicit FindController(WebPage*);
     49     virtual ~FindController();
     50 
     51     void findString(const String&, FindOptions, unsigned maxMatchCount);
     52     void hideFindUI();
     53     void countStringMatches(const String&, FindOptions, unsigned maxMatchCount);
     54 
     55     void hideFindIndicator();
     56 
     57 private:
     58     // PageOverlay::Client.
     59     virtual void pageOverlayDestroyed(PageOverlay*);
     60     virtual void willMoveToWebPage(PageOverlay*, WebPage*);
     61     virtual void didMoveToWebPage(PageOverlay*, WebPage*);
     62     virtual bool mouseEvent(PageOverlay*, const WebMouseEvent&);
     63     virtual void drawRect(PageOverlay*, WebCore::GraphicsContext&, const WebCore::IntRect& dirtyRect);
     64 
     65     Vector<WebCore::IntRect> rectsForTextMatches();
     66     bool updateFindIndicator(WebCore::Frame* selectedFrame, bool isShowingOverlay);
     67 
     68 private:
     69     WebPage* m_webPage;
     70     PageOverlay* m_findPageOverlay;
     71 
     72     // Whether the UI process is showing the find indicator. Note that this can be true even if
     73     // the find indicator isn't showing, but it will never be false when it is showing.
     74     bool m_isShowingFindIndicator;
     75 };
     76 
     77 } // namespace WebKit
     78 
     79 #endif // FindController_h
     80