/// <summary>
/// Removing an exists column from the board!
/// WE musts have minimum 2 columns on the board! so if the NumberOfColumns equals to 2 throws an error!
/// All the tasks are moved to the neighbor column but only if the neighbor coloum has limit > NumOfHisTasks + NumOfOtherTasks
/// </summary>
/// <param name="columnID"> unique id for the column to be moved! </param>
public void removeColumn(int columnID) // 0 (1) 2
{
taskDalController = new DataAccess_Layer.TaskDalController();
columnDalController = new DataAccess_Layer.ColumnDalController();
if (columnID < 0 || columnID >= boardColumns.Count || boardColumns.Count == 2)
{
throw new Exception("Board must have minmum of 2 columns!");
}
if (columnID == 0)
{
if (!(getColumnById(1).getLimit() == -1) && getColumnById(1).getNumberOfTasks() + getColumnById(0).getNumberOfTasks() > getColumnById(1).getLimit())
{
throw new Exception("Couldnt remove the column!");
}
foreach (Task t in getColumnById(columnID).getTasks())
{
taskDalController.Delete(t.ToDalObject());
boardColumns[1].addTask(t, t.getId());
}
}
else
{
if (!(getColumnById(columnID - 1).getLimit() == -1) && getColumnById(columnID - 1).getNumberOfTasks() + getColumnById(columnID).getNumberOfTasks() > getColumnById(columnID - 1).getLimit())
{
throw new Exception("Couldnt remove the column!");
}
foreach (Task t in getColumnById(columnID).getTasks())
{
taskDalController.Delete(t.ToDalObject());
boardColumns[columnID - 1].addTask(t, t.getId());
}
}
columnDalController.Delete(getColumnById(columnID).ToDalObject());
//Shifting columns back.
for (int i = columnID + 1; i < boardColumns.Count; i++)
{
boardColumns.ElementAt(i).columnID--; // done id = 1
boardColumns.ElementAt(i).Save();
}
boardColumns.RemoveAt(columnID);
Save();//Saving board due to columns decrement.
}
/// <summary>
/// Helper function to achive an important requirement!
/// Removing an existing task from the column!
/// </summary>
/// <param name="taskId"> Task unique Id to be removed! </param>
public void RemoveTask(int taskId)
{
int index = 0;
bool temp = false;
for (int i = 0; i < Tasks.Count && !temp; i++)
{
if (Tasks[i].getId() == taskId)
{
temp = true;
index = i;
}
}
if (!temp)
{
log.Warn("No such task with the given Id!");
throw new Exception("No such task with the given Id!");
}
taskDalController.Delete(Tasks.ElementAt(index).ToDalObject());//Deleting task.
Tasks.RemoveAt(index);
NumberOfTasks--;
Save();//Saving column.
}
