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      1 /*
      2  * Copyright (C) 2013 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 are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef CustomElementLifecycleCallbacks_h
     32 #define CustomElementLifecycleCallbacks_h
     33 
     34 #include "wtf/RefCounted.h"
     35 #include "wtf/text/AtomicString.h"
     36 
     37 namespace WebCore {
     38 
     39 class Element;
     40 
     41 class CustomElementLifecycleCallbacks : public RefCounted<CustomElementLifecycleCallbacks> {
     42 public:
     43     virtual ~CustomElementLifecycleCallbacks() { }
     44 
     45     enum CallbackType {
     46         None             = 0,
     47         Created          = 1 << 0,
     48         Attached         = 1 << 1,
     49         Detached         = 1 << 2,
     50         AttributeChanged = 1 << 3
     51     };
     52 
     53     bool hasCallback(CallbackType type) const { return m_which & type; }
     54 
     55     virtual void created(Element*) = 0;
     56     virtual void attached(Element*) = 0;
     57     virtual void detached(Element*) = 0;
     58     virtual void attributeChanged(Element*, const AtomicString& name, const AtomicString& oldValue, const AtomicString& newValue) = 0;
     59 
     60 protected:
     61     CustomElementLifecycleCallbacks(CallbackType which) : m_which(which) { }
     62 
     63 private:
     64     CallbackType m_which;
     65 };
     66 
     67 }
     68 
     69 #endif // CustomElementLifecycleCallbacks_h
     70