// This is invoked whenever and item is dragged over one of our drop targets.
// The main job is to determine whether this is a viable drop.
// If we say nothing, the default answer is no.
public void DragOver(IDropInfo dropInfo)
{
// Drops are only valid on to writable profiles
if (IsSelectedProfileWritable)
{
var Source = window.IdentifyControl(dropInfo.DragInfo.VisualSource);
var Target = window.IdentifyControl(dropInfo.VisualTarget);
// Dropping a group onto Full Details
if (Source == ProfileControls.Groups && Target == ProfileControls.FullDetails)
{
// Check group is not already there
string group = dropInfo.Data as string;
if (group != null && !SelectedProfile.HasGroupInFullDetails(group))
{
dropInfo.DropTargetAdorner = DropTargetAdorners.Insert;
dropInfo.Effects = DragDropEffects.Copy;
}
}
// Dropping a property onto Full Details
else if (Source == ProfileControls.Properties && Target == ProfileControls.FullDetails)
{
//System.Diagnostics.Trace.WriteLine(String.Format("DragOver {0} at {1}", ((TreeItem)dropInfo.Data).Name,
// dropInfo.TargetItem == null ? "null" : ((TreeItem)dropInfo.TargetItem).Name));
// Check at least one group is present
if (SelectedProfile.FullDetails.Count > 0)
{
// Check property is not already there
var ti = dropInfo.Data as TreeItem;
string property = state.GetSystemPropertyName(ti);
if (property != null && !SelectedProfile.HasPropertyInFullDetails(property))
{
dropInfo.DropTargetAdorner = DropTargetAdorners.Insert;
dropInfo.Effects = DragDropEffects.Copy;
}
}
}
// Reordering within Full Details
else if (Source == ProfileControls.FullDetails && Target == ProfileControls.FullDetails)
{
//System.Diagnostics.Trace.WriteLine(String.Format("DragOver {0} at {1}", ((TreeItem)dropInfo.Data).Name,
// dropInfo.TargetItem == null ? "null" : ((TreeItem)dropInfo.TargetItem).Name));
var ti = dropInfo.Data as TreeItem;
if (ti != null)
{
dropInfo.DropTargetAdorner = DropTargetAdorners.Insert;
dropInfo.Effects = DragDropEffects.Move;
}
}
// Dragging from Full Details to Preview Details
else if (Source == ProfileControls.FullDetails && Target == ProfileControls.PreviewDetails)
{
var ti = dropInfo.Data as TreeItem;
// Can only drag properties, not groups, and only if they are not already present
if (ti != null &&
(PropType)ti.Item == PropType.Normal &&
!SelectedProfile.HasPropertyInPreviewDetails(ti.Name))
{
dropInfo.DropTargetAdorner = DropTargetAdorners.Insert;
dropInfo.Effects = DragDropEffects.Copy;
}
}
// Reordering within Preview Details
else if (Source == ProfileControls.PreviewDetails && Target == ProfileControls.PreviewDetails)
{
var property = dropInfo.Data as PropertyListEntry;
if (property != null)
{
dropInfo.DropTargetAdorner = DropTargetAdorners.Insert;
dropInfo.Effects = DragDropEffects.Move;
}
}
// Dragging from Full Details to InfoTip
else if (Source == ProfileControls.FullDetails && Target == ProfileControls.InfoTip)
{
var ti = dropInfo.Data as TreeItem;
// Can only drag properties, not groups, and only if they are not already present
if (ti != null &&
(PropType)ti.Item == PropType.Normal &&
!SelectedProfile.HasPropertyInInfoTip(ti.Name))
{
dropInfo.DropTargetAdorner = DropTargetAdorners.Insert;
dropInfo.Effects = DragDropEffects.Copy;
}
}
// Reordering within InfoTip
else if (Source == ProfileControls.InfoTip && Target == ProfileControls.InfoTip)
{
var property = dropInfo.Data as PropertyListEntry;
if (property != null)
{
dropInfo.DropTargetAdorner = DropTargetAdorners.Insert;
dropInfo.Effects = DragDropEffects.Move;
}
}
}
}