--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/emailuis/uicomponents/inc/fstreenode.h	Thu Dec 17 08:39:21 2009 +0200
@@ -0,0 +1,167 @@
+/*
+* Copyright (c) 2007 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:  Data item classes used by tree list component
+*
+*/
+
+
+#ifndef C_FSTREENODE_H
+#define C_FSTREENODE_H
+
+#include "fstreeitem.h"
+
+class MFsTreeNodeVisualizer;
+
+/** Default item index in children array */
+const TInt KFsTreeChildIndexLast = -1;
+
+/**
+ *  CFsTreeNode is a class representing node in tree data structure
+ *
+ *  @code
+ *
+ *  @endcode
+ *
+ *  @lib
+ */
+NONSHARABLE_CLASS( CFsTreeNode ) : public CFsTreeItem
+    {
+
+public: // Construction
+
+    /**
+     * Two-phased constructor
+     *
+     * @param aParent Pointer to the parent node (cannot be NULL!)
+     * @param aData Reference to the item data instance
+     * @param aVisualizer Reference to the item visualizer instance
+     */
+    IMPORT_C static CFsTreeNode* NewL( CFsTreeNode& aParent, MFsTreeItemData& aData,
+            MFsTreeNodeVisualizer& aVisualizer );
+
+    /**
+     * C++ destructor
+     */
+    virtual ~CFsTreeNode();
+
+public: //node content
+
+    /**
+     * Returns reference to the node's visualizer
+     *
+     * @return Reference to the node's visualizer
+     */
+    MFsTreeNodeVisualizer* NodeVisualizer() const;
+
+public: // Hierarchy management
+
+    /**
+     * Inserts new child item on given position
+     *
+     * @param aItem  Pointer to the item that is to be inserted.
+     * @param aIndex Index (position) of a child, if omitted item is added as
+     *               last child.
+     *
+     * @return KErrNone, if the insertion is successful, otherwise one of the
+     *         system wide error codes.
+     */
+    TInt InsertChild( CFsTreeItem* aItem,
+            const TInt aIndex = KFsTreeChildIndexLast );
+
+    /**
+     * Removes a child
+     *
+     * @param aIndex Index of the child to be removed
+     *
+     * @return Address of the removed item. NULL if index is out of range.
+     */
+    CFsTreeItem* RemoveChild( const TInt aIndex );
+
+    /**
+     * Gets child with given index (position)
+     *
+     * @param aIndex Index of a child
+     *
+     * @return Pointer to the child tree item, NULL if the index is out of
+     *         range.
+     */
+    CFsTreeItem* Child( const TInt aIndex ) const;
+
+    /**
+     * Gets an index of desired child tree item
+     *
+     * @param aItem Pointer to the child tree item
+     *
+     * @return Index (position) of the child, KErrNotFound is returned if item
+     *         is not not found
+     */
+    TInt Index( const CFsTreeItem* aItem ) const;
+
+    /**
+     * Returns the number of children for the node
+     *
+     * @return Number of children
+     */
+    TUint CountChildren() const;
+
+    /**
+     * Returns recursively the number of all children under the node
+     * @return Number of children
+     */
+    TUint CountChildrenRecursively() const;
+
+    /**
+     * Checks if tree item is a node
+     *
+     * @returns ETrue
+     */
+    virtual TBool IsNode() const;
+
+    /**
+     * Return pointer to node object. Returned value is @c NULL, if the item
+     * is not derived from @c CFsTreeNode.
+     *
+     * @return @c CFsTreeNode pointer, if the item is a node.
+     */
+    virtual CFsTreeNode* Node();
+
+protected: // Construction
+
+    /**
+     * C++ constructor
+     *
+     * @param aParent Pointer to the parent node
+     * @param aData Reference to the item data instance
+     * @param aVisualizer Reference to the item visualizer instance
+     */
+    CFsTreeNode( CFsTreeNode* aParent, MFsTreeItemData& aData,
+            MFsTreeNodeVisualizer& aVisualizer );
+
+    /**
+     * Second phase constructor
+     *
+     */
+    void ConstructL( );
+
+protected:
+
+    /**
+     * Array of pointers to node's children
+     */
+    RFsTreeItemList iChildren;
+
+    };
+
+#endif // C_FSTREENODE_H
+