TSPCoursesViewDragDropCmd.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;
using System.Windows.Forms;
using System.Collections;

namespace OpenCTT{
  /// <summary>
  /// Summary description for TSPCoursesViewDragDropCmd.
  /// </summary>
  public class TSPCoursesViewDragDropCmd:AbstractCommand
  {
    private Course _dropedCourse;
    private TimeSlotPanel _tsp;
    private TreeNode _selectedNode;
    private int _indexRow;
    private int _indexCol;
    private ArrayList _forUndoRedoList;


    public TSPCoursesViewDragDropCmd(Course dropedCourse, TimeSlotPanel tsp)
    {
      _dropedCourse=dropedCourse;
      _tsp=tsp;
      _indexRow=_tsp.getIndexRow();
      _indexCol=_tsp.getIndexCol();      
      _selectedNode=AppForm.getAppForm().getCoursesTreeView().SelectedNode;
    }

    public override void doit()
    {
      _forUndoRedoList= new ArrayList();

      //find all rooms which are possible
      //for this lection (capacity, are they free in the term,...)      
      ArrayList possibleRooms=_tsp.calculateAllAllowedRooms(_dropedCourse,_tsp.getIndexRow(),_tsp.getIndexCol());

      //i take the room which has the first bigger capacity than 
      //the number of enrolled students for the course(s) that is draged
      IEnumerator prEnum = possibleRooms.GetEnumerator();
      Room minCapacityRoom=null;

      for(int n=0;n<possibleRooms.Count;n++)
      {
        prEnum.MoveNext();
        Room room = (Room)prEnum.Current;
        if(n==0)
        {
          minCapacityRoom=room;
        }
        else
        {
          if(room.getRoomCapacity()< minCapacityRoom.getRoomCapacity())
          {
            minCapacityRoom=room;
          }

        }
      }      
            
      _tsp.makeSubLabel(_dropedCourse,minCapacityRoom);

      EduProgram thisEP=(EduProgram)_dropedCourse.Parent;
      ArrayList [,] mytt=thisEP.getTimetable();
      ArrayList lessonsInOneTimeSlot;
      if(mytt[_indexRow,_indexCol]==null) 
      {
        lessonsInOneTimeSlot = new ArrayList();                
      }
      else
      {
        lessonsInOneTimeSlot=mytt[_indexRow,_indexCol];
      }

      
      Object [] courseAndRoomPair=new Object[2];
      courseAndRoomPair[0]=_dropedCourse;
      courseAndRoomPair[1]=minCapacityRoom;

      lessonsInOneTimeSlot.Add(courseAndRoomPair);
      mytt[_indexRow,_indexCol]=lessonsInOneTimeSlot;
      
      _forUndoRedoList.Add(courseAndRoomPair);
      
      if(_dropedCourse.getCoursesToHoldTogetherList().Count>0)
      {
        foreach(Course courseHT in _dropedCourse.getCoursesToHoldTogetherList())
        {
          EduProgram epHT=(EduProgram)courseHT.Parent;
          ArrayList [,] myttHT=epHT.getTimetable();

          ArrayList lessonsInOneTimeSlotHT;
          if(myttHT[_indexRow,_indexCol]==null) 
          {
            lessonsInOneTimeSlotHT = new ArrayList();                
          }
          else
          {
            lessonsInOneTimeSlotHT=myttHT[_indexRow,_indexCol];
          }

      
          Object [] courseAndRoomPairHT=new Object[2];          

          courseAndRoomPairHT[0]=courseHT;
          courseAndRoomPairHT[1]=minCapacityRoom;

          lessonsInOneTimeSlotHT.Add(courseAndRoomPairHT);
          myttHT[_indexRow,_indexCol]=lessonsInOneTimeSlotHT;
          
          _forUndoRedoList.Add(courseAndRoomPairHT);          

        }
      }

    }

    public override void undo()
    {    
      foreach(Object [] oneItem in _forUndoRedoList)
      {
                Course course=(Course)oneItem[0];

        EduProgram thisEP=(EduProgram)course.Parent;
        ArrayList [,] mytt=thisEP.getTimetable();      
        ArrayList lessonsInOneTimeSlot=mytt[_indexRow,_indexCol];
        lessonsInOneTimeSlot.Remove(oneItem);
      }
  
      if(AppForm.getAppForm().getTreeTabControl().SelectedIndex!=0)
      {
        AppForm.getAppForm().getTreeTabControl().SelectedIndexChanged -=new System.EventHandler(AppForm.getAppForm().treeTabControl_SelectedIndexChanged);
        AppForm.getAppForm().getTreeTabControl().SelectedIndex=0;
        AppForm.getAppForm().getTreeTabControl().SelectedIndexChanged +=new System.EventHandler(AppForm.getAppForm().treeTabControl_SelectedIndexChanged);
      }
      
      AppForm.getAppForm().getCoursesTreeView().AfterSelect -= new System.Windows.Forms.TreeViewEventHandler(AppForm.getAppForm().coursesTreeView_AfterSelect);
      AppForm.getAppForm().getCoursesTreeView().SelectedNode=_selectedNode;
      AppForm.getAppForm().getCoursesTreeView().AfterSelect += new System.Windows.Forms.TreeViewEventHandler(AppForm.getAppForm().coursesTreeView_AfterSelect);

      AppForm.getAppForm().ctvRefreshTimetablePanel(_selectedNode,false,true);
    }

    public override void redo()
    {      
      foreach(Object [] oneItem in _forUndoRedoList)
      {
        Course course=(Course)oneItem[0];

        EduProgram thisEP=(EduProgram)course.Parent;
        ArrayList [,] mytt=thisEP.getTimetable();      
        
        ArrayList lessonsInOneTimeSlot;
        if(mytt[_indexRow,_indexCol]==null) 
        {
          lessonsInOneTimeSlot = new ArrayList();                
        }
        else
        {
          lessonsInOneTimeSlot=mytt[_indexRow,_indexCol];
        }

        lessonsInOneTimeSlot.Add(oneItem);
        mytt[_indexRow,_indexCol]=lessonsInOneTimeSlot;
      }      

    }
  }
}