protected bool UpdateTask(ITask task)
{
task.Title = this.Title;
// this should never happens but...
if (this.TargetFolder == null)
{
return(false);
}
task.Folder = this.TargetFolder;
if (this.TargetContext != null && !string.IsNullOrEmpty(this.TargetContext.Name) && this.TargetContext.Name != " ")
{
task.Context = this.TargetContext;
}
else
{
task.Context = null;
}
task.Note = this.Note;
task.Priority = this.Priority;
task.Due = this.DueDate;
task.Progress = this.Progress;
if (this.StartDate.HasValue)
{
task.Start = this.Start;
}
else
{
task.Start = null;
}
if (this.ReminderDate.HasValue)
{
task.Alarm = this.Reminder;
}
else
{
task.Alarm = null;
}
if (this.selectedFrequency != null)
{
task.CustomFrequency = this.selectedFrequency.CustomFrequency;
task.UseFixedDate = this.selectedFrequency.UseFixedDate;
}
else
{
task.CustomFrequency = null;
}
// check deleted subtasks
foreach (var subtask in task.Children.ToList())
{
bool stillExists = this.subtasks.Any(t => t.Id == subtask.Id);
if (!stillExists)
{
task.RemoveChild(subtask);
subtask.Delete();
}
}
// check new and updated subtasks
foreach (var subtask in this.subtasks)
{
bool updated = false;
if (subtask.Id > 0)
{
var existing = task.Children.FirstOrDefault(t => t.Id == subtask.Id);
if (existing != null)
{
existing.Folder = this.targetFolder;
existing.IsCompleted = subtask.IsCompleted;
existing.Title = subtask.Title;
updated = true;
}
}
if (!updated)
{
task.AddChild(subtask);
subtask.Folder = this.targetFolder;
}
}
task.WriteTags(this.Tags);
task.Modified = DateTime.Now;
task.IsCompleted = this.IsCompleted;
return(true);
}