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      1 /*
      2  * Copyright (C) 2011 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 COMPUTER, 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 COMPUTER, 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 CSSFilterValue_h
     27 #define CSSFilterValue_h
     28 
     29 #include "core/css/CSSValueList.h"
     30 #include "wtf/PassRefPtr.h"
     31 
     32 namespace blink {
     33 
     34 class CSSFilterValue : public CSSValueList {
     35 public:
     36     // NOTE: these have to match the values in the IDL
     37     enum FilterOperationType {
     38         UnknownFilterOperation,
     39         ReferenceFilterOperation,
     40         GrayscaleFilterOperation,
     41         SepiaFilterOperation,
     42         SaturateFilterOperation,
     43         HueRotateFilterOperation,
     44         InvertFilterOperation,
     45         OpacityFilterOperation,
     46         BrightnessFilterOperation,
     47         ContrastFilterOperation,
     48         BlurFilterOperation,
     49         DropShadowFilterOperation,
     50     };
     51 
     52     static bool typeUsesSpaceSeparator(FilterOperationType);
     53 
     54     static PassRefPtrWillBeRawPtr<CSSFilterValue> create(FilterOperationType type)
     55     {
     56         return adoptRefWillBeNoop(new CSSFilterValue(type));
     57     }
     58 
     59     String customCSSText() const;
     60 
     61     FilterOperationType operationType() const { return m_type; }
     62 
     63     PassRefPtrWillBeRawPtr<CSSFilterValue> cloneForCSSOM() const;
     64 
     65     bool equals(const CSSFilterValue&) const;
     66 
     67     void traceAfterDispatch(Visitor* visitor) { CSSValueList::traceAfterDispatch(visitor); }
     68 
     69 private:
     70     explicit CSSFilterValue(FilterOperationType);
     71     explicit CSSFilterValue(const CSSFilterValue& cloneFrom);
     72 
     73     FilterOperationType m_type;
     74 };
     75 
     76 DEFINE_CSS_VALUE_TYPE_CASTS(CSSFilterValue, isFilterValue());
     77 
     78 }
     79 
     80 
     81 #endif
     82