protected override void Drop(SchedulingDragDropState state)
{
state.DestinationSlot.End = SnappingHelper.RoundUpDateTime(state.DestinationSlot.End);
state.DestinationSlot.Start = SnappingHelper.RoundUpDateTime(state.DestinationSlot.Start);
base.Drop(state);
}
protected override bool CanStartDrag(SchedulingDragDropState state)
{
if (!base.CanStartDrag(state))
{
return false;
}
var task = state.DraggedItem as GanttTask;
if (!this.AllowModificationsInThePast && task.Start <= DateTime.Now)
{
return false;
}
if (task.IsMilestone)
{
return this.CanDragMilestones;
}
if (task.IsSummary)
{
return this.CanDragSummaries;
}
return this.CanDragTasks;
}
protected override void Drop(SchedulingDragDropState state)
{
state.DestinationSlot.End = SnappingHelper.RoundUpDateTime(state.DestinationSlot.End);
state.DestinationSlot.Start = SnappingHelper.RoundUpDateTime(state.DestinationSlot.Start);
base.Drop(state);
}
/// <summary>
/// Determines whether movement via drag/drop is generally allowed for the task related
/// with the given SchedulingDragDropState.
/// </summary>
/// <param name="state">The SchedulingDragDropState.</param>
/// <returns>Value indicating whether drag/drop-action can be started.</returns>
protected override bool CanStartDrag(SchedulingDragDropState state)
{
if (state.SourceGroupKey is RecurrenceTask)
{
return(false);
}
return(base.CanStartDrag(state));
}
protected override bool CanStartDrag(SchedulingDragDropState state)
{
if (state.IsReorderOperation)
{
return(((CustomGanttTask)state.DraggedItem).IsDragReorderAllowed);
}
return(base.CanStartDrag(state));
}
/// <summary>
/// Determines whether movement via drag/drop is generally allowed for the task related
/// with the given SchedulingDragDropState.
/// </summary>
/// <param name="state">The SchedulingDragDropState.</param>
/// <returns>Value indicating whether drag/drop-action can be started.</returns>
protected override bool CanStartDrag(SchedulingDragDropState state)
{
if (state.SourceGroupKey is RecurrenceTask)
{
return false;
}
return base.CanStartDrag(state);
}
protected override bool CanStartDrag(SchedulingDragDropState state)
{
if (state.IsReorderOperation)
{
return ((CustomGanttTask)state.DraggedItem).IsDragReorderAllowed;
}
return base.CanStartDrag(state);
}
protected override bool CanStartDrag(SchedulingDragDropState state)
{
var task = state.DraggedItem as GanttTask;
if (task.IsMilestone)
{
return(false);
}
return(base.CanStartDrag(state));
}
protected override bool CanStartDrag(SchedulingDragDropState state)
{
if (!base.CanStartDrag(state))
{
return false;
}
if (state.IsReorderOperation)
{
return !((LockingTask)state.DraggedItem).IsDragReorderLocked;
}
return !((LockingTask)state.DraggedItem).IsDragDropLocked;
}
/// <summary>
/// Determines whether drag/drop-action for the task related
/// with the given SchedulingDragDropState is valid and can be executed.
/// </summary>
/// <param name="state">The SchedulingDragDropState.</param>
/// <returns>Value indicating whether drag/drop-action is valid.</returns>
protected override bool CanDrop(SchedulingDragDropState state)
{
return(true);
}
protected override bool CanStartDrag(SchedulingDragDropState state)
{
return(state.IsReorderOperation);
}
protected override bool CanStartDrag(SchedulingDragDropState state)
{
return state.IsReorderOperation;
}
/// <summary>
/// Determines whether drag/drop-action for the task related
/// with the given SchedulingDragDropState is valid and can be executed.
/// </summary>
/// <param name="state">The SchedulingDragDropState.</param>
/// <returns>Value indicating whether drag/drop-action is valid.</returns>
protected override bool CanDrop(SchedulingDragDropState state)
{
return true;
}
protected override bool CanStartDrag(SchedulingDragDropState state)
{
return false;
}
protected override bool CanDrop(SchedulingDragDropState state)
{
if (base.CanDrop(state) && this.AllowModificationsInThePast || state.DestinationSlot.Start.Date > DateTime.Now)
{
if (this.SnapToDates)
{
var length = state.DestinationSlot.End - state.DestinationSlot.Start;
var start = state.DestinationSlot.Start.Date;
var end = start + TimeSpan.FromDays(Math.Ceiling(length.TotalDays));
state.DestinationSlot.Start = start;
state.DestinationSlot.End = end;
}
return true;
}
return false;
}
