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 * Redistribution and use in source and binary forms, 
 * with or without modification, are permitted provided 
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 * 
 * *   Redistributions of source code must retain the above 
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 *     following disclaimer. 
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 *     copyright notice, this list of conditions and the 
 *     following disclaimer in the documentation and/or other 
 *     materials provided with the distribution. 
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
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 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
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using System;
using System.Collections.Generic;
using System.Text;
using XenAdmin.Network;
using System.Collections.ObjectModel;
using XenAdmin.Core;


namespace XenAdmin.Commands
{
    /// <summary>
    /// Disconnects the selected objects that are in pools.
    /// </summary>
    internal class DisconnectPoolCommand : Command
    {
        /// <summary>
        /// Initializes a new instance of this Command. The parameter-less constructor is required if 
        /// this Command is to be attached to a ToolStrip menu item or button. It should not be used in any other scenario.
        /// </summary>
        public DisconnectPoolCommand()
        {
        }

        public DisconnectPoolCommand(IMainWindow mainWindow, IEnumerable<SelectedItem> selection)
            : base(mainWindow, selection)
        {
        }

        public DisconnectPoolCommand(IMainWindow mainWindow, SelectedItem selection)
            : base(mainWindow, selection)
        {
        }
        
        protected override void ExecuteCore(SelectedItemCollection selection)
        {
            foreach (SelectedItem item in selection)
            {
                if (CanExecute(item))
                {
                    new DisconnectCommand(MainWindowCommandInterface, item.Connection, true).Execute();
                }
            }
        }

        protected override bool CanExecuteCore(SelectedItemCollection selection)
        {
            foreach (SelectedItem item in selection)
            {
                if (CanExecute(item))
                {
                    return true;
                }
            }

            return false;
        }

        private static bool CanExecute(SelectedItem selection)
        {
            return selection.Connection != null && selection.Connection.IsConnected && selection.PoolAncestor != null;
        }

        public override string MenuText
        {
            get
            {
                return Messages.MAINWINDOW_DISCONNECT;
            }
        }

        public override string ContextMenuText
        {
            get
            {
                return Messages.MAINWINDOW_DISCONNECT_CONTEXT_MENU_POOL;
            }
        }
    }
}