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      1 /*
      2  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
      3  * Copyright (C) 2013 Samsung Electronics. All rights reserved.
      4  *
      5  * This library is free software; you can redistribute it and/or
      6  * modify it under the terms of the GNU Library General Public
      7  * License as published by the Free Software Foundation; either
      8  * version 2 of the License, or (at your option) any later version.
      9  *
     10  * This library is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  * Library General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU Library General Public License
     16  * along with this library; see the file COPYING.LIB.  If not, write to
     17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18  * Boston, MA 02110-1301, USA.
     19  */
     20 
     21 #include "config.h"
     22 #include "core/svg/properties/SVGAnimatedProperty.h"
     23 
     24 #include "core/svg/SVGElement.h"
     25 
     26 namespace WebCore {
     27 
     28 SVGAnimatedProperty::SVGAnimatedProperty(SVGElement* contextElement, const QualifiedName& attributeName, AnimatedPropertyType animatedPropertyType)
     29     : m_contextElement(contextElement)
     30     , m_attributeName(attributeName)
     31     , m_animatedPropertyType(animatedPropertyType)
     32     , m_isAnimating(false)
     33     , m_isReadOnly(false)
     34 {
     35     contextElement->setContextElement();
     36 }
     37 
     38 SVGAnimatedProperty::~SVGAnimatedProperty()
     39 {
     40     // Assure that animationEnded() was called, if animationStarted() was called before.
     41     ASSERT(!m_isAnimating);
     42 }
     43 
     44 void SVGAnimatedProperty::detachAnimatedPropertiesForElement(SVGElement* element)
     45 {
     46     // Remove wrappers from cache.
     47     Cache* cache = animatedPropertyCache();
     48 
     49     Vector<SVGAnimatedPropertyDescription> keysToRemove;
     50 
     51     const Cache::const_iterator end = cache->end();
     52     for (Cache::const_iterator it = cache->begin(); it != end; ++it) {
     53         if (it->key.m_element == element) {
     54             it->value->resetContextElement();
     55             keysToRemove.append(it->key);
     56         }
     57     }
     58 
     59     for (Vector<SVGAnimatedPropertyDescription>::const_iterator it = keysToRemove.begin(); it != keysToRemove.end(); ++it) {
     60         // http://crbug.com/333156 :
     61         // There are cases where detachAnimatedPropertiesForElement is called recursively from ~SVGAnimatedProperty.
     62         // This below protect makes this function safe by deferring the recursive call until we finish touching the HashMap.
     63         RefPtr<SVGAnimatedProperty> protect = cache->get(*it);
     64         cache->remove(*it);
     65     }
     66 }
     67 
     68 void SVGAnimatedProperty::commitChange()
     69 {
     70     ASSERT(m_contextElement);
     71     ASSERT_WITH_SECURITY_IMPLICATION(!m_contextElement->m_deletionHasBegun);
     72     m_contextElement->invalidateSVGAttributes();
     73     m_contextElement->svgAttributeChanged(m_attributeName);
     74 }
     75 
     76 SVGAnimatedProperty::Cache* SVGAnimatedProperty::animatedPropertyCache()
     77 {
     78     static Cache* s_cache = new Cache;
     79     return s_cache;
     80 }
     81 
     82 } // namespace WebCore
     83