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      1 /*
      2  * Copyright (C) 2007 Alexey Proskuryakov (ap (at) nypop.com)
      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 #include "config.h"
     27 #include "JSCustomXPathNSResolver.h"
     28 
     29 #if ENABLE(XPATH)
     30 
     31 #include "Document.h"
     32 #include "ExceptionCode.h"
     33 #include "Frame.h"
     34 #include "JSDOMWindowCustom.h"
     35 #include "ScriptController.h"
     36 #include <runtime/JSLock.h>
     37 
     38 namespace WebCore {
     39 
     40 using namespace JSC;
     41 
     42 PassRefPtr<JSCustomXPathNSResolver> JSCustomXPathNSResolver::create(JSC::ExecState* exec, JSC::JSValue value)
     43 {
     44     if (value.isUndefinedOrNull())
     45         return 0;
     46 
     47     JSObject* resolverObject = value.getObject();
     48     if (!resolverObject) {
     49         setDOMException(exec, TYPE_MISMATCH_ERR);
     50         return 0;
     51     }
     52 
     53     return adoptRef(new JSCustomXPathNSResolver(resolverObject, asJSDOMWindow(exec->dynamicGlobalObject())));
     54 }
     55 
     56 JSCustomXPathNSResolver::JSCustomXPathNSResolver(JSObject* customResolver, JSDOMWindow* globalObject)
     57     : m_customResolver(customResolver)
     58     , m_globalObject(globalObject)
     59 {
     60 }
     61 
     62 JSCustomXPathNSResolver::~JSCustomXPathNSResolver()
     63 {
     64 }
     65 
     66 String JSCustomXPathNSResolver::lookupNamespaceURI(const String& prefix)
     67 {
     68     ASSERT(m_customResolver);
     69 
     70     JSLock lock(SilenceAssertionsOnly);
     71 
     72     ExecState* exec = m_globalObject->globalExec();
     73 
     74     JSValue function = m_customResolver->get(exec, Identifier(exec, "lookupNamespaceURI"));
     75     CallData callData;
     76     CallType callType = getCallData(function, callData);
     77     if (callType == CallTypeNone) {
     78         callType = m_customResolver->getCallData(callData);
     79         if (callType == CallTypeNone) {
     80             // FIXME: Pass actual line number and source URL.
     81             m_globalObject->impl()->console()->addMessage(JSMessageSource, LogMessageType, ErrorMessageLevel, "XPathNSResolver does not have a lookupNamespaceURI method.", 0, String());
     82             return String();
     83         }
     84         function = m_customResolver;
     85     }
     86 
     87     RefPtr<JSCustomXPathNSResolver> selfProtector(this);
     88 
     89     MarkedArgumentBuffer args;
     90     args.append(jsString(exec, prefix));
     91 
     92     m_globalObject->globalData().timeoutChecker.start();
     93     JSValue retval = JSC::call(exec, function, callType, callData, m_customResolver, args);
     94     m_globalObject->globalData().timeoutChecker.stop();
     95 
     96     String result;
     97     if (exec->hadException())
     98         reportCurrentException(exec);
     99     else {
    100         if (!retval.isUndefinedOrNull())
    101             result = ustringToString(retval.toString(exec));
    102     }
    103 
    104     Document::updateStyleForAllDocuments();
    105 
    106     return result;
    107 }
    108 
    109 } // namespace WebCore
    110 
    111 #endif // ENABLE(XPATH)
    112