webengine/widgetengine/src/WidgetEventHandler.cpp
changeset 0 dd21522fd290
child 5 10e98eab6f85
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/webengine/widgetengine/src/WidgetEventHandler.cpp	Mon Mar 30 12:54:55 2009 +0300
@@ -0,0 +1,113 @@
+/*
+* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  Implemetation of WidgetEventHandler
+*
+*/
+#include "WidgetEventHandler.h"
+#include "config.h"
+#include <kjs/object.h>
+
+// ============================ MEMBER FUNCTIONS ===============================
+using namespace KJS;
+
+
+// ----------------------------------------------------------------------------
+// WidgetEventHandler::WidgetEventHandler
+//
+//
+//
+// ----------------------------------------------------------------------------
+WidgetEventHandler::WidgetEventHandler( JSValue* aValue, ExecState* aExecState ) : iGlobalExecState (aExecState)
+{
+    iEventHandler = aValue;
+    Collector::protect(iEventHandler);    
+}
+
+
+// ----------------------------------------------------------------------------
+// WidgetEventHandler::~WidgetEventHandler
+//
+//
+//
+// ----------------------------------------------------------------------------
+WidgetEventHandler::~WidgetEventHandler()
+{
+    Collector::unprotect(iEventHandler);
+}
+
+// ----------------------------------------------------------------------------
+// WidgetEventHandler::Delete
+// Delete event handler if it isn't handling an event
+// If InvokeCall is executing then delete after it's done.
+//
+// ----------------------------------------------------------------------------
+void WidgetEventHandler::Delete()
+{
+    if (iInUse) {
+        iSelfDelete = ETrue;
+    }
+    else {
+        delete this;
+    }
+        
+}
+// ----------------------------------------------------------------------------
+// WidgetEventHandler::InvokeCall
+// Invokes the callback function
+//
+//
+// ----------------------------------------------------------------------------
+void WidgetEventHandler::InvokeCall( const TInt& aParam )
+{
+    
+    iInUse = ETrue;
+    if (iEventHandler) {
+
+        JSLock::lock();
+        if (iGlobalExecState &&
+            iGlobalExecState->dynamicInterpreter()) 
+        {
+                       
+            if (iEventHandler &&
+                !iEventHandler->isNull() &&
+                iEventHandler->isObject()) {
+                
+                KJS::List args;
+                if ( aParam != -1 ) {
+                    args.append( jsNumber(aParam) );
+                }
+ 
+                JSObject* objFunc = static_cast<JSObject*>(iEventHandler);
+                if (objFunc->implementsCall()) {
+                    objFunc->call(iGlobalExecState,iGlobalExecState->dynamicInterpreter()->globalObject(),args);
+                }
+                
+                if ( iGlobalExecState->hadException() ) {
+                    iGlobalExecState->clearException();
+                }
+            }
+        
+        }
+        
+        JSLock::unlock();
+    }
+        
+    iInUse = EFalse;
+    if (iSelfDelete)
+        {
+        delete this;
+        }
+
+}
+