1 /*

     2 * Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the License "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  Implemetation of WidgetEventHandler

    15 *

    16 */

    17 #include "WidgetEventHandler.h"

    18 #include "config.h"

    19 #include <kjs/object.h>

    20 

    21 // ============================ MEMBER FUNCTIONS ===============================

    22 using namespace KJS;

    23 

    24 

    25 // ----------------------------------------------------------------------------

    26 // WidgetEventHandler::WidgetEventHandler

    27 //

    28 //

    29 //

    30 // ----------------------------------------------------------------------------

    31 WidgetEventHandler::WidgetEventHandler( JSValue* aValue, ExecState* aExecState ) : iGlobalExecState (aExecState)

    32 {

    33     iEventHandler = aValue;

    34     Collector::protect(iEventHandler);    

    35 }

    36 

    37 

    38 // ----------------------------------------------------------------------------

    39 // WidgetEventHandler::~WidgetEventHandler

    40 //

    41 //

    42 //

    43 // ----------------------------------------------------------------------------

    44 WidgetEventHandler::~WidgetEventHandler()

    45 {

    46     Collector::unprotect(iEventHandler);

    47 }

    48 

    49 // ----------------------------------------------------------------------------

    50 // WidgetEventHandler::Delete

    51 // Delete event handler if it isn't handling an event

    52 // If InvokeCall is executing then delete after it's done.

    53 //

    54 // ----------------------------------------------------------------------------

    55 void WidgetEventHandler::Delete()

    56 {

    57     if (iInUse) {

    58         iSelfDelete = ETrue;

    59     }

    60     else {

    61         delete this;

    62     }

    63         

    64 }

    65 // ----------------------------------------------------------------------------

    66 // WidgetEventHandler::InvokeCall

    67 // Invokes the callback function

    68 //

    69 //

    70 // ----------------------------------------------------------------------------

    71 void WidgetEventHandler::InvokeCall( const TInt& aParam )

    72 {

    73     

    74     iInUse = ETrue;

    75     if (iEventHandler) {

    76 

    77         JSLock::lock();

    78         if (iGlobalExecState &&

    79             iGlobalExecState->dynamicInterpreter()) 

    80         {

    81                        

    82             if (iEventHandler &&

    83                 !iEventHandler->isNull() &&

    84                 iEventHandler->isObject()) {

    85                 

    86                 KJS::List args;

    87                 if ( aParam != -1 ) {

    88                     args.append( jsNumber(aParam) );

    89                 }

    90  

    91                 JSObject* objFunc = static_cast<JSObject*>(iEventHandler);

    92                 if (objFunc->implementsCall()) {

    93                     objFunc->call(iGlobalExecState,iGlobalExecState->dynamicInterpreter()->globalObject(),args);

    94                 }

    95                 

    96                 if ( iGlobalExecState->hadException() ) {

    97                     iGlobalExecState->clearException();

    98                 }

    99             }

   100         

   101         }

   102         

   103         JSLock::unlock();

   104     }

   105         

   106     iInUse = EFalse;

   107     if (iSelfDelete)

   108         {

   109         delete this;

   110         }

   111 

   112 }

   113