DeleteTeacherCmd.cs :  » Business-Application » Timetabler » OpenCTT » C# / CSharp Open Source

#region Open Course Timetabler - An application for school and university course timetabling
//
// Author:
//   Ivan urak (mailto:Ivan.Curak@fesb.hr)
//
// Copyright (c) 2007 Ivan urak, Split, Croatia
//
// http://www.openctt.org
//
//This file is part of Open Course Timetabler.
//
//Open Course Timetabler is free software;
//you can redistribute it and/or modify it under the terms of the GNU General Public License
//as published by the Free Software Foundation; either version 2 of the License,
//or (at your option) any later version.
//
//Open Course Timetabler is distributed in the hope that it will be useful,
//but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
//or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
//You should have received a copy of the GNU General Public License along with
//Open Course Timetabler; if not, write to the Free Software Foundation, Inc., 51 Franklin St,
//Fifth Floor, Boston, MA  02110-1301  USA

#endregion


using System;

namespace OpenCTT{
  /// <summary>
  /// Summary description for DeleteTeacherCmd.
  /// </summary>
  public class DeleteTeacherCmd:AbstractCommand
  {
    private Teacher _teacher;

    public DeleteTeacherCmd(Teacher teacher)
    {
            _teacher=teacher;
    }

    public override void doit()
    {
      AppForm.CURR_OCTT_DOC.TeachersRootNode.Nodes.Remove(_teacher);
      AppForm.getAppForm().getTeachersTreeView().SelectedNode=AppForm.CURR_OCTT_DOC.TeachersRootNode;
      AppForm.getAppForm().getTeachersTreeView().SelectedNode.EnsureVisible();      

      if(HardConstraintChecks.checkIfTitleOfTeacherIsFreeForDelete(_teacher))
      {
        AppForm.CURR_OCTT_DOC.TeacherTitlesList.Remove(_teacher.getTitle());      
      }

      if(HardConstraintChecks.checkIfEduRankOfTeacherIsFreeForDelete(_teacher))
      {
        AppForm.CURR_OCTT_DOC.TeacherEduRanksList.Remove(_teacher.getEduRank());
      }

      AppForm.getAppForm().getTreeTabControl().SelectedIndex=1;
    }


    public override void undo()
    {
      AppForm.CURR_OCTT_DOC.TeachersRootNode.Nodes.Add(_teacher);
      AppForm.getAppForm().getTeachersTreeView().SelectedNode=_teacher;
      AppForm.getAppForm().getTeachersTreeView().SelectedNode.EnsureVisible();
      AppForm.CURR_OCTT_DOC.TeachersRootNode.Expand();

      if(!AppForm.CURR_OCTT_DOC.TeacherTitlesList.Contains(_teacher.getTitle()))
      {
        AppForm.CURR_OCTT_DOC.TeacherTitlesList.Add(_teacher.getTitle());
        AppForm.CURR_OCTT_DOC.TeacherTitlesList.Sort();
      }

      if(!AppForm.CURR_OCTT_DOC.TeacherEduRanksList.Contains(_teacher.getEduRank()))
      {
        AppForm.CURR_OCTT_DOC.TeacherEduRanksList.Add(_teacher.getEduRank());
        AppForm.CURR_OCTT_DOC.TeacherEduRanksList.Sort();
      }

      AppForm.getAppForm().getTreeTabControl().SelectedIndex=1;
    }

    public override void redo()
    {
      doit();      
    }
  }
}