using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using UIObjects.TreeViewInterfaces;

using AbstraX.ClientInterfaces;

using System.Collections.ObjectModel;

using TreeBuilder.Contracts;

using MvvmTreeView;

using System.Windows.Controls;

using System.Diagnostics;

using SL4PopupMenu;

using System.Windows;



namespace TreeBuilder.ViewModels

{

    public class TreeBuilderTreeNodeFolder : TreeBuilderTreeNodeBase

    {

        private ITreeNodeFolder folder;

        private bool allowDrop;



        public TreeBuilderTreeNodeFolder(ITreeBuilderService treeBuilderService, ITreeView treeView, ITreeNodeFolder folder, ITreeNode parent) : base(treeBuilderService, treeView, parent)

        {

            this.folder = folder;

            this.Tag = folder;

            this.allowDrop = true;

        }



        public override ITreeNodeBase InternalNodeObject

        {

            get

            {

                return folder;

            }

        }



        public override AbstraX.ClientInterfaces.IBase BaseObject

        {

            get

            {

                return folder.BaseObject;

            }



            set

            {

                folder.BaseObject = value;

            }

        }



        public override void Expand()

        {

            if (!this.IsChildrenLoaded)

            {

                folder.ChildrenLoaded += new TreeBuilder.Contracts.ChildrenLoadedHandler(OnChildrenLoaded);

                folder.LoadChildren();

            }



            base.Expand();

        }



        public override string Text

        {

            get

            {

                return folder.Text;

            }



            set

            {

                folder.Text = value;

            }

        }



        public void AddMemberAsNode(object sender, RoutedEventArgs r)

        {

            var rootElement = (IElement)folder.FolderItemSource;

            var menu = (PopupMenuItem)sender;



            if (rootElement.Attributes.Any(a => a.Name == (string)menu.Tag))

            {

                var attribute = rootElement.Attributes.Single(a => a.Name == (string)menu.Tag);

                var createOperation = treeBuilderService.CreateAttributeNode(folder, attribute);



                createOperation.NodeCreated += (parent, e) =>

                {

                    this.Nodes.Add(new TreeBuilderTreeNodeAttributeNode(treeBuilderService, treeView, createOperation.NewNode, this) { ChildOrdinal = this.Nodes.Count });

                    base.Expand();

                };

            }

            else if (rootElement.ChildElements.Any(e => e.Name == (string)menu.Tag))

            {

                var element = rootElement.ChildElements.Single(a => a.Name == (string)menu.Tag);

                var createOperation = treeBuilderService.CreateElementNode(folder, element);



                createOperation.NodeCreated += (parent, e) =>

                {

                    this.Nodes.Add(new TreeBuilderTreeNodeElementNode(treeBuilderService, treeView, createOperation.NewNode, this) { ChildOrdinal = this.Nodes.Count });

                    base.Expand();

                };

            }

        }



        private List<IContextMenuItem> GetSubMenus()

        {

            List<IContextMenuItem> subMenus = new List<IContextMenuItem>();



            if (folder.FolderItemSource is IElement)

            {

                IElement element = (IElement)folder.FolderItemSource;



                foreach (var childElement in element.ChildElements)

                {

                    subMenus.Add(new ContextMenuItem(null, childElement.Name, childElement.Name, AddMemberAsNode));

                }



                foreach (var childElement in element.ChildElements)

                {

                    subMenus.Add(new ContextMenuItem(null, childElement.Name, childElement.Name, AddMemberAsNode));

                }

            }



            return subMenus;

        }



        public void AddFolder(object sender, RoutedEventArgs r)

        {

            var createOperation = treeBuilderService.CreateFolderNode(folder, folder.FolderItemSource);



            createOperation.NodeCreated += (parent, e) =>

            {

                this.Nodes.Add(new TreeBuilderTreeNodeFolder(treeBuilderService, treeView, createOperation.NewNode, this) { ChildOrdinal = this.Nodes.Count });

                base.Expand();

            };

        }



        public override ContextMenu ContextMenu

        {

            get

            {

                if (contextMenu == null)

                {

                    contextMenu = new ContextMenu

                    {

                        Items = new List<IContextMenuItem>()

                        {

                            new ContextMenuItem

                            {

                                Text = "Add Member as Node",

                                Items = GetSubMenus(),

                            },

                            new ContextMenuItem(null, "Add Folder", null, AddFolder),

                            new ContextMenuItem(null, "Add Query", null, AddQuery),

                            new ContextMenuItem(null, "Add Advanced Query...", null, AddAdvancedQuery),

                        }

                    };

                }



                return contextMenu;

            }



            set

            {

                contextMenu = value;

            }

        }



        public override bool? HasChildren

        {

            get { throw new NotImplementedException(); }

        }



        public override string ID

        {

            get 

            {

                return folder.ID;

            }

        }



        public override void LoadChildren()

        {

            folder.ChildrenLoaded += new TreeBuilder.Contracts.ChildrenLoadedHandler(OnChildrenLoaded);

            folder.LoadChildren();

        }



        public override IEnumerable<ITreeNodeBase> Children

        {

            get 

            {

                return folder.Children;

            }

        }



        public override void Remove()

        {

            folder.RemovedSuccessfully += (node, e) =>

            {

                this.parent.Nodes.Remove(this);



                var op = treeBuilderService.OrphansExist();



                op.Completed += (sender, e2) =>

                {

                    if (op.Value)

                    {

                        MessageBox.Show("Orphans exist!");

                    }

                };

            };



            folder.Remove();

        }



        public override bool AllowDrop

        {

            get

            {

                return allowDrop;

            }

            set

            {

                allowDrop = value;

            }

        }



        public override ITreeNode ShallowClone()
        {
            throw new NotImplementedException();
        }

		public override void OnSelect()
		{
		}

        public override ITreeNode DeepClone()

        {

            throw new NotImplementedException();

        }



        public override bool AllowRename

        {

            get

            {

                throw new NotImplementedException();

            }

            set

            {

                throw new NotImplementedException();

            }

        }



        public override bool HasLayoverImage<T>(out T image)

        {

            return folder.HasLayoverImage<T>(out image);

        }



        public override void AddNew(string shortCut)

        {

        }



        public override void DragEnter(object sender, UIObjects.DragDropInterfaces.DragEventArgs e)

        {

        }



        public override void DragLeave(object sender, UIObjects.DragDropInterfaces.DragEventArgs e)

        {

        }



        public override void DragOver(object sender, UIObjects.DragDropInterfaces.DragEventArgs e)

        {

        }



        public override void DragStarting(object sender, UIObjects.DragDropInterfaces.ItemDragEventArgs e)

        {

        }



        public override void DragCompleted(object sender, UIObjects.DragDropInterfaces.ItemDragEventArgs e)

        {

        }



        public override void ItemDropped(object sender, UIObjects.DragDropInterfaces.ItemDragEventArgs e, int insertionIndex)

        {

        }



        public override void GiveFeedback(object sender, UIObjects.DragDropInterfaces.GiveFeedbackEventArgs e)

        {

        }



        public override float ChildOrdinal

        {

            get

            {

                return folder.ChildOrdinal;

            }

            set

            {

                folder.ChildOrdinal = value;

            }

        }

    }

}