xenadmin/XenAdmin/Commands/DragDropTagCommand.cs

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using System.Collections.Generic;
using XenAdmin.Controls;
using XenAPI;
using XenAdmin.Model;
using System.Windows.Forms;
using XenAdmin.Actions;


namespace XenAdmin.Commands
{
    internal class DragDropTagCommand : DragDropCommand
    {
        public DragDropTagCommand(IMainWindow mainWindow, VirtualTreeNode targetNode, IDataObject dragData)
            : base(mainWindow, targetNode, dragData)
        {
        }

        public override VirtualTreeNode HighlightNode => GetTargetNodeAncestor<GroupingTag>();

        protected override bool CanRunCore()
        {
            List<IXenObject> draggedObjects = GetDraggedItemsAsXenObjects<IXenObject>();
            GroupingTag gt = GetTargetNodeAncestorAsXenObjectOrGroupingTag<GroupingTag>();
            
            if (gt != null && draggedObjects.Count > 0)
            {
                foreach (IXenObject xenObject in draggedObjects)
                {
                    // can't tag folders.
                    if (xenObject is Folder)
                        return false;
                }

                return gt.Grouping.GroupingName == Messages.TAGS && !string.IsNullOrEmpty(gt.Group as string);
            }
            return false;
        }

        protected override void RunCore()
        {
            string tag = (string)(GetTargetNodeAncestorAsXenObjectOrGroupingTag<GroupingTag>().Group);
            List<IXenObject> objs = GetDraggedItemsAsXenObjects<IXenObject>();

            var actions = new List<AsyncAction>();

            foreach (IXenObject obj in objs)
                actions.Add(Tags.AddTagAction(obj, tag));

            if (actions.Count != 0)
                RunMultipleActions(actions,
                    string.Format(Messages.ADD_TAG, tag),
                    string.Format(Messages.ADDING_TAG, tag),
                    string.Format(Messages.ADDED_TAG, tag), true);
        }
    }
}