menufw/hierarchynavigator/hnmetadatamodel/inc/hnconditionfactory.h
changeset 0 f72a12da539e
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/menufw/hierarchynavigator/hnmetadatamodel/inc/hnconditionfactory.h	Thu Dec 17 08:40:49 2009 +0200
@@ -0,0 +1,105 @@
+/*
+* Copyright (c) 2007-2008 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "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:  
+*
+*/
+
+
+
+#ifndef C_HNCONDITIONFACTORY_H
+#define C_HNCONDITIONFACTORY_H
+
+#include <e32def.h>
+#include <e32base.h>
+#include <e32hashtab.h>
+#include <xmlengelement.h> 
+
+class CHnConditionInterface;
+
+/**
+ * Condition factory.
+ * 
+ * The purpose of this class is the creation of different types of the condition objects.
+ *  
+ * @lib hnmetadatamodel
+ * @since S60 v3.2
+ * @ingroup group_hnmetadatamodel
+ */
+NONSHARABLE_CLASS(HnConditionFactory)
+    {
+public:
+   
+    /**
+     * Standard factory function.
+     * 
+     * @param aElement Xml element.
+     * @return Fully constructed object.
+     */
+    static CHnConditionInterface* NewL( TXmlEngAttr aElement );
+
+    /**
+     * Standard factory function.
+     * 
+     * @param aElement Xml element
+     * @return Fully constructed object.
+     */
+    static CHnConditionInterface* NewLC( TXmlEngAttr aElement );
+    
+    /**
+     * Standard factory function.
+     * 
+     * @param aElement Xml element.
+     * @return Fully constructed object.
+     */
+    static CHnConditionInterface* NewL( TDesC8 & aElement );
+
+    /**
+     * Standard factory function.
+     * 
+     * @param aElement Xml element.
+     * @return Fully constructed object.
+     */
+    static CHnConditionInterface* NewLC( TDesC8 & aElement );
+    
+private:
+    
+    /**
+     * Prepares the condition for processng.
+     * Removes excessive white characters and 
+     * superfluous parentheses
+     * 
+     * @param aConditionString Condition string.
+     */
+    static void TrimConditionL( RBuf8 & aConditionString );
+ 
+    /**
+     * Check condition's brace integrity.
+     * 
+     * @param aConditionString Condition string.
+     * @return Error code. 
+     */
+    static TInt CheckBraceIntegrityL( TDesC8 & aConditionString );
+    
+    /**
+     * Constructs condition appropriate to its properties.
+     * 
+     * @param aConditionString Condition string.
+     * @return A pointer to the condition's interface.
+     */
+    static CHnConditionInterface* ConstructConditionL( TDesC8 & aConditionString );
+
+    };
+
+#endif // C_HNCONDITIONFACTORY_H
+