1 /*

     2  * Copyright (C) 2007 Alexey Proskuryakov (ap@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)