#region License

// Copyright 2005-2019 Paul Kohler (https://github.com/paulkohler/minisqlquery). All rights reserved.
// This source code is made available under the terms of the GNU Lesser General Public License v3.0
// https://github.com/paulkohler/minisqlquery/blob/master/LICENSE
#endregion

using MiniSqlQuery.Core;
using MiniSqlQuery.Core.Commands;

namespace MiniSqlQuery.PlugIns.SearchTools.Commands
{
    /// <summary>The replace string command.</summary>
    public class ReplaceStringCommand : CommandBase
    {
        /// <summary>Initializes a new instance of the <see cref="ReplaceStringCommand"/> class.</summary>
        public ReplaceStringCommand()
            : base("替换")
        {
        }

        /// <summary>Execute the command.</summary>
        public override void Execute()
        {
            IFindReplaceProvider editorFindProvider = HostWindow.ActiveChildForm as IFindReplaceProvider;

            if (editorFindProvider != null)
            {
                FindTextRequest req = null;
                int key = editorFindProvider.GetHashCode();

                // is there a request in the table for this window?
                if (SearchToolsCommon.FindReplaceTextRequests.ContainsKey(key))
                {
                    req = SearchToolsCommon.FindReplaceTextRequests[key];
                }

                if (req != null)
                {
                    // wrap around to start if at last pos
                    if (req.Position != 0)
                    {
                        req.Position = editorFindProvider.CursorOffset;
                    }

                    if (editorFindProvider.ReplaceString(req.ReplaceValue, req.Position - req.SearchValue.Length, req.SearchValue.Length))
                    {
                        CommandManager.GetCommandInstance<FindNextStringCommand>().Execute();
                    }
                }
            }
        }
    }
}