/// <summary>
/// Saves a task to the database either by inserting a new task or by updating an existing one.
/// </summary>
/// <param name="task">The task to save.</param>
/// <returns>The return value is true if the task to be saved is a new one.
/// The return value is false when an existing task has ben updated.</returns>
public bool Save(Task task)
{
bool newTask = false;
Task taskToSave = GetForKeyTable(task.KeyTable);
if (taskToSave == null)
{
taskToSave = new Task();
_dataContext.Tasks.InsertOnSubmit(taskToSave);
newTask = true;
}
taskToSave.DateDue = task.DateDue;
taskToSave.Description = task.Description;
taskToSave.Notes = task.Notes;
taskToSave.Priority = _dataContext.Priorities.SingleOrDefault(p => p.KeyTable == task.KeyPriority);
taskToSave.Project = _dataContext.Projects.SingleOrDefault(p => p.KeyTable == task.KeyProject);
taskToSave.Done = task.Done;
_dataContext.SubmitChanges();
//little friggy but need the keyTable on the task outside this method.
task.KeyTable = taskToSave.KeyTable;
return newTask;
}
public void DeleteTask(Task task)
{
task.Detach();
_dataContext.Tasks.Attach(task);
_dataContext.Tasks.DeleteOnSubmit(task);
_dataContext.SubmitChanges();
}
public static Task CreateNewTask()
{
Task task = new Task();
task.Project = null;
task.Description = string.Empty;
task.Notes = string.Empty;
task.DateDue = DateTime.Now;
task.Priority = null;
task.Done = false;
return task;
}
public TaskDetailsViewModel(Task task, MainWindowViewModel mainWindow)
{
using (ProjectRepository projectRepository = new ProjectRepository())
{
_projects = new CollectionView(projectRepository.GetAllProjects());
}
using (PriorityRepository priorityRepository = new PriorityRepository())
{
_priorities = new CollectionView(priorityRepository.GetAllPriorities());
}
_task = task;
_mainWindow = mainWindow;
SetTabTitle();
}
public bool ContainsTask(Task task)
{
return GetForKeyTable(task.KeyTable) != null;
}
private void detach_Tasks(Task entity)
{
this.SendPropertyChanging();
entity.Priority = null;
}
private void attach_Tasks(Task entity)
{
this.SendPropertyChanging();
entity.Priority = this;
}
partial void DeleteTask(Task instance);
partial void UpdateTask(Task instance);
partial void InsertTask(Task instance);
public SaveTaskCommand(Task task, MainWindowViewModel mainWindow)
{
_task = task;
_mainWindow = mainWindow;
}
