third_party/WebKit/Source/core/svg/SVGEnumeration.cpp

   1 /*
   2  * Copyright (C) 2014 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,
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  28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include "config.h"
  32
  33 #include "core/svg/SVGEnumeration.h"
  34
  35 #include "bindings/core/v8/ExceptionState.h"
  36 #include "bindings/core/v8/ExceptionStatePlaceholder.h"
  37 #include "core/dom/ExceptionCode.h"
  38 #include "core/svg/SVGAnimationElement.h"
  39
  40 namespace blink {
  41
  42 inline PassRefPtrWillBeRawPtr<SVGEnumerationBase> toSVGEnumerationBase(PassRefPtrWillBeRawPtr<SVGPropertyBase> passBase)
  43 {
  44     RefPtrWillBeRawPtr<SVGPropertyBase> base = passBase;
  45     ASSERT(base->type() == SVGEnumerationBase::classType());
  46     return static_pointer_cast<SVGEnumerationBase>(base.release());
  47 }
  48
  49 SVGEnumerationBase::~SVGEnumerationBase()
  50 {
  51 }
  52
  53 PassRefPtrWillBeRawPtr<SVGPropertyBase> SVGEnumerationBase::cloneForAnimation(const String& value) const
  54 {
  55     RefPtrWillBeRawPtr<SVGEnumerationBase> svgEnumeration = clone();
  56     svgEnumeration->setValueAsString(value, IGNORE_EXCEPTION);
  57     return svgEnumeration.release();
  58 }
  59
  60 String SVGEnumerationBase::valueAsString() const
  61 {
  62     for (const auto& entry : m_entries) {
  63         if (m_value == entry.first)
  64             return entry.second;
  65     }
  66
  67     ASSERT(m_value < maxInternalEnumValue());
  68     return emptyString();
  69 }
  70
  71 void SVGEnumerationBase::setValue(unsigned short value, ExceptionState& exceptionState)
  72 {
  73     if (!value) {
  74         exceptionState.throwTypeError("The enumeration value provided is 0, which is not settable.");
  75         return;
  76     }
  77
  78     if (value > maxExposedEnumValue()) {
  79         exceptionState.throwTypeError("The enumeration value provided (" + String::number(value) + ") is larger than the largest allowed value (" + String::number(maxExposedEnumValue()) + ").");
  80         return;
  81     }
  82
  83     m_value = value;
  84     notifyChange();
  85 }
  86
  87 void SVGEnumerationBase::setValueAsString(const String& string, ExceptionState& exceptionState)
  88 {
  89     for (const auto& entry : m_entries) {
  90         if (string == entry.second) {
  91             // 0 corresponds to _UNKNOWN enumeration values, and should not be settable.
  92             ASSERT(entry.first);
  93             m_value = entry.first;
  94             notifyChange();
  95             return;
  96         }
  97     }
  98
  99     exceptionState.throwDOMException(SyntaxError, "The value provided ('" + string + "') is invalid.");
 100     notifyChange();
 101 }
 102
 103 void SVGEnumerationBase::add(PassRefPtrWillBeRawPtr<SVGPropertyBase>, SVGElement*)
 104 {
 105     ASSERT_NOT_REACHED();
 106 }
 107
 108 void SVGEnumerationBase::calculateAnimatedValue(SVGAnimationElement* animationElement, float percentage, unsigned repeatCount, PassRefPtrWillBeRawPtr<SVGPropertyBase> from, PassRefPtrWillBeRawPtr<SVGPropertyBase> to, PassRefPtrWillBeRawPtr<SVGPropertyBase>, SVGElement*)
 109 {
 110     ASSERT(animationElement);
 111     unsigned short fromEnumeration = animationElement->animationMode() == ToAnimation ? m_value : toSVGEnumerationBase(from)->value();
 112     unsigned short toEnumeration = toSVGEnumerationBase(to)->value();
 113
 114     animationElement->animateDiscreteType<unsigned short>(percentage, fromEnumeration, toEnumeration, m_value);
 115 }
 116
 117 float SVGEnumerationBase::calculateDistance(PassRefPtrWillBeRawPtr<SVGPropertyBase>, SVGElement*)
 118 {
 119     // No paced animations for boolean.
 120     return -1;
 121 }
 122
 123 }