/// <summary>
/// Updates the current drag state.
/// </summary>
/// <param name="dropInfo">
/// Information about the drag operation.
/// </param>
/// <remarks>
/// To allow a drop at the current drag position, the <see cref="DropInfo.Effects"/> property on
/// <paramref name="dropInfo"/> should be set to a value other than <see cref="DragDropEffects.None"/>
/// and <see cref="DropInfo.Payload"/> should be set to a non-null value.
/// </remarks>
public void DragOver(IDropInfo dropInfo)
{
if (dropInfo.Payload is Category category)
{
dropInfo.Effects = CategoryApplicationValidationService.ValidateDragDrop(this.Session.PermissionService, this.Thing, category, logger);
return;
}
dropInfo.Effects = DragDropEffects.None;
}
/// <summary>
/// Set the <see cref="IDropInfo.Effects"/> when the payload is an <see cref="Category"/>
/// </summary>
/// <param name="dropInfo">The <see cref="IDropInfo"/></param>
/// <param name="category">The <see cref="Category"/> to drop</param>
protected void DragOver(IDropInfo dropInfo, Category category)
{
//if (!this.PermissionService.CanWrite(this.Thing) || this.Thing.Category.Contains(category) || !category.PermissibleClass.Contains(this.Thing.ClassKind))
//{
// dropInfo.Effects = DragDropEffects.None;
// return;
//}
//dropInfo.Effects = DragDropEffects.Copy;
dropInfo.Effects = CategoryApplicationValidationService.ValidateDragDrop(this.Session.PermissionService, this.Thing, category, logger);
}
/// <summary>
/// Updates the current drag state.
/// </summary>
/// <param name="dropInfo">
/// Information about the drag operation.
/// </param>
/// <remarks>
/// To allow a drop at the current drag position, the <see cref="DropInfo.Effects"/> property on
/// <paramref name="dropInfo"/> should be set to a value other than <see cref="DragDropEffects.None"/>
/// and <see cref="DropInfo.Payload"/> should be set to a non-null value.
/// </remarks>
public void DragOver(IDropInfo dropInfo)
{
if (dropInfo.Payload is Category category)
{
dropInfo.Effects = CategoryApplicationValidationService.ValidateDragDrop(this.Session.PermissionService, this.Thing, category, logger);
return;
}
var termPayload = dropInfo.Payload as Term;
var canDropTerm = this.PermissionService.CanWrite(ClassKind.Term, this.Thing);
if (termPayload == null || !canDropTerm)
{
dropInfo.Effects = DragDropEffects.None;
return;
}
if (termPayload.Container == this.Thing)
{
dropInfo.Effects = DragDropEffects.None;
return;
}
if (termPayload.IDalUri.ToString() == this.Session.DataSourceUri)
{
// Move only possible within the glossary of the same chain of rdl
var payloadRdl = (ReferenceDataLibrary)termPayload.Container.GetContainerOfType(typeof(ReferenceDataLibrary));
var possibleNewRdls = payloadRdl.GetRequiredRdls().ToList();
possibleNewRdls.Add(payloadRdl);
var currentRdl = (ReferenceDataLibrary)this.Thing.Container;
if (!possibleNewRdls.Contains(currentRdl))
{
dropInfo.Effects = DragDropEffects.None;
return;
}
dropInfo.Effects = DragDropEffects.Move;
return;
}
// different data-source
dropInfo.Effects = DragDropEffects.Copy;
}
/// <summary>
/// Set the <see cref="IDropInfo.Effects" /> when the payload is an <see cref="Category" />
/// </summary>
/// <param name="dropInfo">The <see cref="IDropInfo" /></param>
/// <param name="category">The <see cref="Category" /> to drop</param>
protected void DragOver(IDropInfo dropInfo, Category category)
{
dropInfo.Effects = CategoryApplicationValidationService.ValidateDragDrop(this.Session.PermissionService, this.Thing, category, logger);
}