/*

* Copyright (c) 2004-2008 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: 

*

*/

using System;

using System.Text;

using System.IO;

using System.Collections.Generic;

using System.Windows.Forms;

using SymbianUtils.Settings;

using SymbianTabStripLib.Tabs;

using SymbianTabStripLib.Pages;

using SymbianTabStripLib.Manager;

using CrashAnalyserEngine.Interfaces;

using CrashAnalyserEngine.Tabs;

namespace CrashAnalyser.Menu

{

	internal class CAMenuManager

	{

		#region Constructors

        public CAMenuManager( XmlSettings aSettings, MenuStrip aMenu, TabStripManager aTabStripManager )

		{

            iSettings = aSettings;

            iMenuBar = aMenu;

            iTabStripManager = aTabStripManager;

            // Listen to tab changes

            iTabStripManager.TabStrip.SelectedTabChanged += new TabStrip.TabHandler( TabStrip_SelectedTabChanged );

		}

		#endregion

        #region API

        public void Add( ToolStripMenuItem aParent, string aCaption, UIMenuItemClickHandler aClickHandler, object aTag, CATab aHost )

        {

            CAMenuItem item = new CAMenuItem( this, aCaption, aClickHandler, aTag );

            if ( aHost != null )

            {

                // Find a menu list for the corresponding tab

                CAMenuItemList list = this[ aHost ];

                if ( list == null )

                {

                    list = new CAMenuItemList( this );

                    iDictionary.Add( aHost, list );

                }

                // Add the item to the list

                list.Add( item );

            }

            else

            {

                // Not associated with a specific tab, so most likely a top-level

                // plugin menu item that is always visible

            }

            aParent.DropDownItems.Add( item );

        }

        #endregion

		#region Properties

        public XmlSettings Settings

        {

            get { return iSettings; }

        }

        public MenuStrip MenuBar

        {

            get { return iMenuBar; }

        }

		#endregion

        #region Event handlers

        private void TabStrip_SelectedTabChanged( TabStripTab aTab )

        {

            TabStripPage page = aTab.Page;

            if ( page != null )

            {

                // Get the corresponding tab host

                Control mainControl = aTab.Page.Body;

                CATab host = mainControl as CATab;

                if ( host != null )

                {

                    // Map tab host back to our tab type

                    CAMenuItemList menuItems = this[ host ];

                    if ( menuItems != null )

                    {

                        Activate( menuItems );

                    }

                }

            }

        }

        #endregion

        #region Internal methods

        private CAMenuItemList this[ CATab aHost ]

        {

            get

            {

                CAMenuItemList ret = null;

                //

                if ( iDictionary.ContainsKey( aHost ) )

                {

                    ret = iDictionary[ aHost ];

                }

                //

                return ret;

            }

        }

        private void Activate( CAMenuItemList aList )

        {

            if ( iActiveList != null )

            {

                iActiveList.Deactivate();

                iActiveList = null;

            }

            //

            iActiveList = aList;

            //

            if ( iActiveList != null )

            {

                iActiveList.Activate();

            }

        }

        #endregion

        #region Data members

        private readonly XmlSettings iSettings;

        private readonly MenuStrip iMenuBar;

        private readonly TabStripManager iTabStripManager;

        private CAMenuItemList iActiveList = null;

        private Dictionary<CATab, CAMenuItemList> iDictionary = new Dictionary<CATab, CAMenuItemList>();

		#endregion

    }

}