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      1 /*
      2  * Copyright (C) 2008 Nikolas Zimmermann <zimmermann (at) kde.org>
      3  * Copyright (C) 2009 Apple, Inc. All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     17  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     18  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     19  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     20  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     21  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     22  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     24  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 #include "config.h"
     28 
     29 #if ENABLE(SVG)
     30 #include "JSSVGElementInstance.h"
     31 
     32 #include "JSDOMWindow.h"
     33 #include "JSEventListener.h"
     34 #include "JSSVGElement.h"
     35 #include "SVGElementInstance.h"
     36 
     37 using namespace JSC;
     38 
     39 namespace WebCore {
     40 
     41 void JSSVGElementInstance::markChildren(MarkStack& markStack)
     42 {
     43     Base::markChildren(markStack);
     44 
     45     // Mark the wrapper for our corresponding element, so it can mark its event handlers.
     46     markDOMNodeWrapper(markStack, impl()->correspondingElement()->document(), impl()->correspondingElement());
     47 }
     48 
     49 JSValue JSSVGElementInstance::addEventListener(ExecState* exec, const ArgList& args)
     50 {
     51     JSValue listener = args.at(1);
     52     if (!listener.isObject())
     53         return jsUndefined();
     54 
     55     impl()->addEventListener(args.at(0).toString(exec), JSEventListener::create(asObject(listener), this, false, currentWorld(exec)), args.at(2).toBoolean(exec));
     56     return jsUndefined();
     57 }
     58 
     59 JSValue JSSVGElementInstance::removeEventListener(ExecState* exec, const ArgList& args)
     60 {
     61     JSValue listener = args.at(1);
     62     if (!listener.isObject())
     63         return jsUndefined();
     64 
     65     impl()->removeEventListener(args.at(0).toString(exec), JSEventListener::create(asObject(listener), this, false, currentWorld(exec)).get(), args.at(2).toBoolean(exec));
     66     return jsUndefined();
     67 }
     68 
     69 void JSSVGElementInstance::pushEventHandlerScope(ExecState*, ScopeChain&) const
     70 {
     71 }
     72 
     73 JSC::JSValue toJS(JSC::ExecState* exec, JSDOMGlobalObject* globalObject, SVGElementInstance* object)
     74 {
     75     JSValue result = getDOMObjectWrapper<JSSVGElementInstance>(exec, globalObject, object);
     76 
     77     // Ensure that our corresponding element has a JavaScript wrapper to keep its event handlers alive.
     78     if (object)
     79         toJS(exec, object->correspondingElement());
     80 
     81     return result;
     82 }
     83 
     84 } // namespace WebCore
     85 
     86 #endif // ENABLE(SVG)
     87