--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ncdengine/inc/ncdnodedependency.h	Thu Dec 17 08:51:10 2009 +0200
@@ -0,0 +1,117 @@
+/*
+* Copyright (c) 2006-2008 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:   Contains MNcdNodeDependency interface
+*
+*/
+
+
+#ifndef M_NCD_NODE_DEPENDENCY_H
+#define M_NCD_NODE_DEPENDENCY_H
+
+
+#include <e32cmn.h>
+
+#include "catalogsbase.h"
+#include "ncdinterfaceids.h"
+
+
+class MNcdNodeDependencyInfo;
+
+
+
+/**
+ * Node dependency states
+ *
+ * @note Do not change the order of these enumerations
+ */
+enum TNcdDependencyState
+    {
+    /**
+     * Dependency has not been installed or is not present
+     */
+    ENcdDependencyMissing = 0, 
+    
+    /**
+     * Dependency is present but there is an upgrade available
+     * on the server
+     */
+    ENcdDependencyUpgradeAvailable, 
+    
+    /**
+     * Dependency is installed
+     */
+    ENcdDependencyInstalled    
+    };
+
+
+/**
+ *  This interface provides functions for the node that depends on
+ *  another nodes. The functions can be used to check what nodes
+ *  or node content this node depends on.
+ *
+ *  @see MNcdNode
+ *  @see MNcdNodeDependencyInfo
+ *
+ *  
+ */
+class MNcdNodeDependency : public virtual MCatalogsBase
+    {
+
+public:
+
+    /**
+     * Unique identifier for the interface, required for all MCatalogsBase interfaces.
+     *
+     * 
+     */
+    enum { KInterfaceUid = ENcdNodeDependencyUid };
+
+
+    /**
+     * Returns the dependency information about the nodes or content
+     * that this object depends from.
+     *
+     * @return Array of pointers to dependency information objects that 
+     *         this node depends on.
+     */
+    virtual const RPointerArray< MNcdNodeDependencyInfo >& DependencyInfos() const = 0;
+
+
+    /**
+     * Returns the collective state of the dependencies.
+     *
+     * The returned value will be ENcdDependencyMissing if any of the node's
+     * dependencies is missing, ENcdDependencyUpgradeAvailable if all of
+     * node's dependencies are installed but at least one has an upgrade 
+     * available or ENcdDependencyInstalled if all are installed and there are
+     * no upgrades available
+     *
+     * @return Node's dependencies' state
+     */
+    virtual TNcdDependencyState State() const = 0;
+
+
+protected:
+
+    /**
+     * Destructor.
+     * 
+     * @see MCatalogsBase::~MCatalogsBase
+     */
+    virtual ~MNcdNodeDependency() {}
+
+    };
+
+
+#endif // M_NCD_NODE_DEPENDENCY_H