/*

* 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:  Freestyle tree node implementation.

*

*/

#include "emailtrace.h"

#include "fstreenode.h"

#include "fstreenodevisualizer.h"

#include "fsgenericpanic.h"

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

// ---------------------------------------------------------------------------

// Two-phased constructor.

// ---------------------------------------------------------------------------

//

EXPORT_C CFsTreeNode* CFsTreeNode::NewL( CFsTreeNode& aParent,

    MFsTreeItemData& aData, MFsTreeNodeVisualizer& aVisualizer )

    {

    FUNC_LOG;

    CFsTreeNode* self = new( ELeave ) CFsTreeNode( &aParent, aData,

            aVisualizer );

    CleanupStack::PushL( self );

    self->ConstructL( );

    CleanupStack::Pop( self );

    return self;

    }

// ---------------------------------------------------------------------------

// C++ destructor.

// ---------------------------------------------------------------------------

//

CFsTreeNode::~CFsTreeNode()

    {

    FUNC_LOG;

    iChildren.Close();

    }

// ---------------------------------------------------------------------------

// Gets node visualizer.

// ---------------------------------------------------------------------------

//

MFsTreeNodeVisualizer* CFsTreeNode::NodeVisualizer() const

    {

    FUNC_LOG;

    return ( static_cast<MFsTreeNodeVisualizer*>(iVisualizer) );

    }

// ---------------------------------------------------------------------------

// Inserts child with given index.

// ---------------------------------------------------------------------------

//

TInt CFsTreeNode::InsertChild( CFsTreeItem* aItem, const TInt aIndex )

    {

    FUNC_LOG;

    TInt childIndex = 0;

    if ( aIndex == KFsTreeChildIndexLast )

        {

        childIndex = iChildren.Append( aItem );

        }

    else

        {

        childIndex = iChildren.Insert( aItem, aIndex );

        }

    return childIndex;

    }

// ---------------------------------------------------------------------------

// Removes child with given index.

// ---------------------------------------------------------------------------

//

CFsTreeItem* CFsTreeNode::RemoveChild( const TInt aIndex )

    {

    FUNC_LOG;

    CFsTreeItem* childItem = NULL;

    childItem = Child( aIndex );

    if (childItem)

        {

        iChildren.Remove( aIndex );

        }

    return childItem;

    }

// ---------------------------------------------------------------------------

// Gets child with given index (position).

// ---------------------------------------------------------------------------

//

CFsTreeItem* CFsTreeNode::Child( const TInt aIndex ) const

    {

    FUNC_LOG;

    CFsTreeItem* treeItem = NULL;

    if (( aIndex < iChildren.Count() ) && ( aIndex >= 0 ))

        {

        treeItem = iChildren[aIndex];

        }

    else

        {

        FsGenericPanic(EFsListPanicIndexOutOfRange);

        }

    return treeItem;

    }

// ---------------------------------------------------------------------------

// Gets an index of desired child tree item.

// ---------------------------------------------------------------------------

//

TInt CFsTreeNode::Index( const CFsTreeItem* aItem ) const

    {

    FUNC_LOG;

    return iChildren.Find(aItem);

    }

// ---------------------------------------------------------------------------

// Returns the number of children for the node.

// ---------------------------------------------------------------------------

//

TUint CFsTreeNode::CountChildren() const

    {

    FUNC_LOG;

    return iChildren.Count();

    }

// ---------------------------------------------------------------------------

// Returns recursively the number of all children under the node

// ---------------------------------------------------------------------------

//

TUint CFsTreeNode::CountChildrenRecursively() const

    {

    FUNC_LOG;

    TInt count ( 0 );

    for ( TInt i = 0; i < iChildren.Count(); i++ )

        {

        count++;

        count += iChildren[i]->CountChildrenRecursively();

        }

    return count;

    }

// ---------------------------------------------------------------------------

// Checks if tree item is a node.

// ---------------------------------------------------------------------------

TBool CFsTreeNode::IsNode() const

    {

    FUNC_LOG;

    return ETrue;

    }

// ---------------------------------------------------------------------------

// Return pointer to node object. Returned value is @c NULL, if the item

// is not derived from @c CFsTreeNode.

// ---------------------------------------------------------------------------

//

CFsTreeNode* CFsTreeNode::Node()

    {

    FUNC_LOG;

    return this;

    }

// ---------------------------------------------------------------------------

//  C++ constructor.

// ---------------------------------------------------------------------------

//

CFsTreeNode::CFsTreeNode( CFsTreeNode* aParent, MFsTreeItemData& aData,

    MFsTreeNodeVisualizer& aVisualizer )

    : CFsTreeItem( aParent, aData, aVisualizer )

    {

    FUNC_LOG;

    }

// ---------------------------------------------------------------------------

//  Second phase constructor.

// ---------------------------------------------------------------------------

//

void CFsTreeNode::ConstructL( )

    {

    FUNC_LOG;

    }