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      1 /*
      2  * Copyright (C) 2008, 2009 Apple Inc. All rights reserved.
      3  * Copyright (C) 2009 Google 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 
     28 #include "config.h"
     29 
     30 #if ENABLE(WORKERS)
     31 
     32 #include "JSWorkerContextBase.h"
     33 
     34 #include "JSDedicatedWorkerContext.h"
     35 #include "JSSharedWorkerContext.h"
     36 #include "JSWorkerContext.h"
     37 #include "WorkerContext.h"
     38 
     39 using namespace JSC;
     40 
     41 namespace WebCore {
     42 
     43 ASSERT_CLASS_FITS_IN_CELL(JSWorkerContextBase);
     44 
     45 const ClassInfo JSWorkerContextBase::s_info = { "WorkerContext", &JSDOMGlobalObject::s_info, 0, 0 };
     46 
     47 JSWorkerContextBase::JSWorkerContextBase(NonNullPassRefPtr<JSC::Structure> structure, PassRefPtr<WorkerContext> impl)
     48     : JSDOMGlobalObject(structure, new JSDOMGlobalObjectData(normalWorld(*impl->script()->globalData())), this)
     49     , m_impl(impl)
     50 {
     51 }
     52 
     53 JSWorkerContextBase::~JSWorkerContextBase()
     54 {
     55 }
     56 
     57 ScriptExecutionContext* JSWorkerContextBase::scriptExecutionContext() const
     58 {
     59     return m_impl.get();
     60 }
     61 
     62 JSValue toJS(ExecState* exec, JSDOMGlobalObject*, WorkerContext* workerContext)
     63 {
     64     return toJS(exec, workerContext);
     65 }
     66 
     67 JSValue toJS(ExecState*, WorkerContext* workerContext)
     68 {
     69     if (!workerContext)
     70         return jsNull();
     71     WorkerScriptController* script = workerContext->script();
     72     if (!script)
     73         return jsNull();
     74     return script->workerContextWrapper();
     75 }
     76 
     77 JSDedicatedWorkerContext* toJSDedicatedWorkerContext(JSValue value)
     78 {
     79     if (!value.isObject())
     80         return 0;
     81     const ClassInfo* classInfo = asObject(value)->classInfo();
     82     if (classInfo == &JSDedicatedWorkerContext::s_info)
     83         return static_cast<JSDedicatedWorkerContext*>(asObject(value));
     84     return 0;
     85 }
     86 
     87 #if ENABLE(SHARED_WORKERS)
     88 JSSharedWorkerContext* toJSSharedWorkerContext(JSValue value)
     89 {
     90     if (!value.isObject())
     91         return 0;
     92     const ClassInfo* classInfo = asObject(value)->classInfo();
     93     if (classInfo == &JSSharedWorkerContext::s_info)
     94         return static_cast<JSSharedWorkerContext*>(asObject(value));
     95     return 0;
     96 }
     97 #endif
     98 
     99 JSWorkerContext* toJSWorkerContext(JSValue value)
    100 {
    101     JSWorkerContext* context = toJSDedicatedWorkerContext(value);
    102 #if ENABLE(SHARED_WORKERS)
    103     if (!context)
    104         context = toJSSharedWorkerContext(value);
    105 #endif
    106     return context;
    107 }
    108 
    109 } // namespace WebCore
    110 
    111 #endif // ENABLE(WORKERS)
    112