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      1 /*
      2  * Copyright (C) 2012 Google 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'' AND
     14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     16  * ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE
     17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     19  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
     20  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     23  * SUCH DAMAGE.
     24  */
     25 
     26 #ifndef ValidationMessageClient_h
     27 #define ValidationMessageClient_h
     28 
     29 #include "wtf/Forward.h"
     30 
     31 namespace WebCore {
     32 
     33 class Document;
     34 class Element;
     35 
     36 class ValidationMessageClient {
     37 public:
     38     virtual ~ValidationMessageClient() { }
     39 
     40     // Show validation message for the specified anchor element. An
     41     // implementation of this function may hide the message automatically after
     42     // some period.
     43     virtual void showValidationMessage(const Element& anchor, const String& message) = 0;
     44 
     45     // Hide validation message for the specified anchor if the message for the
     46     // anchor is already visible.
     47     virtual void hideValidationMessage(const Element& anchor) = 0;
     48 
     49     // Returns true if the validation message for the specified anchor element
     50     // is visible.
     51     virtual bool isValidationMessageVisible(const Element& anchor) = 0;
     52 
     53     virtual void documentDetached(const Document&) = 0;
     54 };
     55 
     56 }
     57 
     58 #endif
     59