webengine/device/src/DeviceLiwMap.cpp
author Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
Mon, 30 Mar 2009 12:54:55 +0300
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permissions -rw-r--r--
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/*
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* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: 
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*
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*/
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// INCLUDE FILES
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#include <config.h>
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#include <lookup.h>
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#include <PropertyNameArray.h>
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#include "DeviceLiwMap.h"
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#include "DeviceLiwBinding.h"
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#include "array_instance.h"
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#include <liwvariant.h>
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const TInt KMaxKeySize = 255;
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using namespace KJS;
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const ClassInfo DeviceLiwMap::info = { "DeviceLiwMap", 0/*&ArrayInstance::info*/, 0, 0 };
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// ============================= LOCAL FUNCTIONS ===============================
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/*
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@begin DeviceLiwMapTable 1
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    close DeviceLiwMap::close DontDelete|Function 0
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@end
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*/
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// ============================ MEMBER FUNCTIONS ===============================
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// ----------------------------------------------------------------------------
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// DeviceLiwMap::DeviceLiwMap
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//
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// ----------------------------------------------------------------------------
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//
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DeviceLiwMap::DeviceLiwMap( JSValue* proto, const CLiwMap* liwMap, CDeviceLiwBinding* liwBinding)
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    : JSObject(proto)
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    {
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        m_privateData = new DeviceLiwMapPrivate(liwMap, liwBinding);
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        if (!m_privateData )
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            m_valid = false;
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        else
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            {
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            m_valid = true;
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            // protect this object
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            KJS::Collector::protect(this);   
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            }            
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    }
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// ----------------------------------------------------------------------------
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// DeviceLiwMap::~DeviceLiwMap
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//
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// ----------------------------------------------------------------------------
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//
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DeviceLiwMap::~DeviceLiwMap()
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    {
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        // only can be called by garbage collection after the 
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        // DeviceLiwMap::Close() was called
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    }
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// ----------------------------------------------------------------------------
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// DeviceLiwMap::Close()
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//
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// ----------------------------------------------------------------------------
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//
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void DeviceLiwMap::Close( ExecState* exec, bool unmark )
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    {
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    // avoid double close    
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    if(!m_valid) 
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        {   
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        if(unmark) 
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            {
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            // unprotect this to allow the garbage collection to release this jsobject
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            KJS::Collector::unprotect(this);
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            }
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        return;
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        }        
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    if (exec) 
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        {
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        PropertyNameArray propertyNames;
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        this->getPropertyNames( exec, propertyNames );
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        unsigned size = static_cast<unsigned>(propertyNames.size());
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        for (unsigned i = 0; i < size; i++)
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            {
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            JSValue * jsvalue = this->get( exec, propertyNames[i] );
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            if(jsvalue->isObject()) 
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                {
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                JSObject * prop = jsvalue->toObject( exec );            
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                if (prop->inherits( &DeviceLiwIterable::info ))
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                    {
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                    (static_cast<DeviceLiwIterable*>(prop))->Close(exec, true);
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                    }
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                else if (prop->inherits( &DeviceLiwMap::info ))
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                    {
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                    (static_cast<DeviceLiwMap*>(prop))->Close(exec, true);
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                    }
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                }        
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            }                
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        }    
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    delete m_privateData;
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    m_privateData = NULL;
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    m_valid = false;
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    if(unmark) 
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        {
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        // unprotect this to allow the garbage collection to release this jsobject
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        KJS::Collector::unprotect(this);
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        }
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    }
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// ----------------------------------------------------------------------------
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// Device::toString
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//
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//
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// ----------------------------------------------------------------------------
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//
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UString DeviceLiwMap::toString( ExecState* /*exec*/ ) const
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    {
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    return "[object DeviceLiwMap]";
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    }
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// ----------------------------------------------------------------------------
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// DeviceLiwMap::getOwnPropertySlot
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//
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//
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// ----------------------------------------------------------------------------
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bool DeviceLiwMap::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
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{
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    // When the DeviceLiwMap is valid, the check order is
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    //      DeviceLiwMap table => own property => prototype property
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    // When the DeviceLiwMap is invalid (after close), the check order is
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    //      close function in table => prototype property
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    // 1. when it is valid    
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    if(m_valid) 
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        {
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        // 1.1 check DeviceLiwMap table
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        const HashEntry* entry = Lookup::findEntry(&DeviceLiwMapTable, propertyName);
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        if (entry)
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            {
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            slot.setStaticEntry(this, entry, staticValueGetter<DeviceLiwMap>);
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            return true;
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            }
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        // 1.2 check own property
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        m_privateData->m_propName = propertyName;
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        if (!getDirect(propertyName))
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            {
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            // 1.3 check prototypes
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            JSObject *proto = static_cast<JSObject *>(this->prototype());
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            while (!proto->isNull() && proto->isObject()) {
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                if (proto->getOwnPropertySlot(exec, propertyName, slot))
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                    return true;
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                proto = static_cast<JSObject *>(proto->prototype());
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            }
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            if (!m_privateData->m_liwMap)
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                return false;
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            if ( propertyName.size() >= KMaxKeySize )
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                throwError( exec, GeneralError, "key name too long" );
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            // Store the property in the object so we get the same one each time.
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            TLiwVariant detail;
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            char prop_name8[KMaxKeySize];
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            UChar * u_propname = (UChar *)propertyName.data();
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            for (int i = 0; i < propertyName.size(); i++)
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            {
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                prop_name8[i] = u_propname[i].low();
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            }
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            prop_name8[propertyName.size()] = NULL;
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            TBuf8<KMaxKeySize> prop_name((const unsigned char *)prop_name8);
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            if (!m_privateData->m_liwMap->FindL(prop_name, detail))
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                return false;
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            JSValue* result = m_privateData->m_liwBinding->LiwVariant2JsVal(exec, detail);
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            if ( result->type() == UndefinedType || exec->hadException() )
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                return false;
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            else
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                this->putDirect( propertyName, result, DontDelete|ReadOnly );
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            }
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        return JSObject::getOwnPropertySlot(exec, propertyName, slot);
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        }
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    // when it is invalid
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    else
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        {
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        // 2.1 check close() function
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        if (propertyName == "close")
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            {
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            const HashEntry* entry = Lookup::findEntry(&DeviceLiwMapTable, propertyName);
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            if (entry)
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                {
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                slot.setStaticEntry(this, entry, staticValueGetter<DeviceLiwMap>);
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                return true;
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                }
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            }
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        // 2.2 check prototypes
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        JSObject *proto = static_cast<JSObject *>(this->prototype());
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        while (!proto->isNull() && proto->isObject())
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            {
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            if (proto->getOwnPropertySlot(exec, propertyName, slot))
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                return true;
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            proto = static_cast<JSObject *>(proto->prototype());
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            }
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        }
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    return false;
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}
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// ----------------------------------------------------------------------------
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// DeviceLiwMap::getValueProperty
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//
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// ----------------------------------------------------------------------------
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JSValue* DeviceLiwMap::getValueProperty(ExecState *exec, int token) const
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    {
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    switch (token)
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            {
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            case close:
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                {
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                return new DeviceLiwMapFunc(exec, token);;
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                }
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            default:
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                if(m_valid)
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                    return getDirect(m_privateData->m_propName);
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                else
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                    return jsUndefined();                
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            }
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    }
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// ---------------------------------------------------------------------------
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// DeviceLiwMapPrivate constructor
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//
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// ---------------------------------------------------------------------------
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DeviceLiwMapPrivate::DeviceLiwMapPrivate(const CLiwMap* liwMap, CDeviceLiwBinding* liwBinding)
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    {
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    TRAP_IGNORE(
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            m_liwBinding = liwBinding;    
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            m_liwMap = (CLiwMap*) liwMap;
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            if ( m_liwMap )
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                m_liwMap->IncRef();
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            )
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    }
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// ---------------------------------------------------------------------------
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// DeviceLiwMapPrivate::Close
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//
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// ---------------------------------------------------------------------------
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void DeviceLiwMapPrivate::Close()
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    {
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       m_liwBinding = NULL;
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    // release the map    
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    if ( m_liwMap ) 
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        {
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        m_liwMap->DecRef();
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        m_liwMap = NULL;
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        }        
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    }
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// ----------------------------------------------------------------------------
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// DeviceLiwMapFunc::DeviceLiwMapFunc
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//
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// ----------------------------------------------------------------------------
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//
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DeviceLiwMapFunc::DeviceLiwMapFunc( ExecState* exec, int token )
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    : JSObject( exec->lexicalInterpreter()->builtinObjectPrototype() ),
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    m_func( token )
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    {
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    }
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// ----------------------------------------------------------------------------
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// DeviceLiwMapFunc::call
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//
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// ----------------------------------------------------------------------------
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//
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JSValue* DeviceLiwMapFunc::callAsFunction(ExecState* exec, JSObject *thisObj, const List& aArgs )
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    {
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        if (!thisObj->inherits(&DeviceLiwMap::info)) {
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            return throwError(exec, GeneralError);
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        }
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        DeviceLiwMap *map = static_cast<DeviceLiwMap *>(thisObj);
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        if ( m_func == DeviceLiwMap::close ) 
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            {
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            map->Close(exec, false);
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            }
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        return jsUndefined();
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    }
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//END OF FILE
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