// <copyright file="DrawerTabbedView.cs" company="PlaceholderCompany">
// Copyright (c) PlaceholderCompany. All rights reserved.
// </copyright>

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Windows.Forms;
using DevExpress.XtraBars.Docking2010.Customization;
using DevExpress.XtraBars.Docking2010.Views;
using DevExpress.XtraBars.Docking2010.Views.Tabbed;
using DevExpress.XtraBars.Ribbon;

using Document = DevExpress.XtraBars.Docking2010.Views.Tabbed.Document;

namespace PcgDrawR
{
    /// <summary>
    /// 多文档视图
    /// </summary>
    public class DrawerTabbedView : TabbedView
    {
        /// <summary>
        /// 允许停靠的类型
        /// </summary>
        public List<Type> InvalidDocumentTypes { get; set; } = new List<Type>();
        /// <summary>
        /// Occurs when [other document activated].
        /// </summary>
        public DocumentEventHandler OtherDocumentActivated { get; set; }
        /// <summary>
        /// Ribbon控件
        /// </summary>
        public RibbonControl Ribbon { get; set; }
        /// <summary>
        /// Initializes a new instance of the <see cref="DrawerTabbedView"/> class.
        /// </summary>
        /// <param name="container">父容器</param>
        public DrawerTabbedView(IContainer container)
            : base(container)
        {
            this.DocumentClosed += DrawerTabbedView_DocumentClosed;
            //this.ShowingDockGuides += DrawerTabbedView_ShowingDockGuides;
        }

        private void DrawerTabbedView_ShowingDockGuides(object sender, ShowingDockGuidesEventArgs e)
        {
            e.Configuration.Disable(DockHint.Center);
            e.Configuration.Disable(DockHint.CenterLeft);
            e.Configuration.Disable(DockHint.CenterRight);
            e.Configuration.Disable(DockHint.CenterTop);
            e.Configuration.Disable(DockHint.CenterBottom);
        }

        private void DrawerTabbedView_DocumentClosed(object sender, DocumentEventArgs e)
        {
            if (e.Document.Control is UCDrawEdit editor)
            {
                editor.Dispose();
                editor = null;
            }
            if (e.Document.Control is UCVtkEdit vtkEditor)
            {
                vtkEditor.Dispose();
                vtkEditor = null;
            }
        }

        /// <inheritdoc/>
        protected override bool OnBeginFloating(BaseDocument document, FloatingReason reason)
        {
            if (this.InvalidDocumentTypes.Contains(document.Control.GetType()))
            {
                return false;
            }

            Document doc = document as Document;
            if (doc.Control is UCDrawEdit)
            {
                this.Ribbon.UnMergeRibbon();
            }
            if (doc.Control is UCVtkEdit)
            {
                this.Ribbon.UnMergeRibbon();
            }

            if (this.GetNeighborDocument(doc.Parent.Items.ToArray(), document) is Document docNext && docNext.Control != null)
            {
                if (docNext.Control is UCDrawEdit editor)
                {
                    this.Ribbon.MergeRibbon(editor.ribbonMain);
                }

                if (docNext.Control is UCVtkEdit vtkEditor)
                {
                    this.Ribbon.MergeRibbon(vtkEditor.RibbonControlMain);
                }
            }
            return base.OnBeginFloating(document, reason);
        }
        protected override void OnDocumentDeactivated(BaseDocument document)
        {
            base.OnDocumentDeactivated(document);
        }
        /// <inheritdoc/>
        protected override void OnDocumentActivated(BaseDocument document)
        {
            if (this.InvalidDocumentTypes.Contains(document.Control.GetType()))
            //if (!(document.Control is UCDrawEdit editor))
            {
                return;
            }

            base.OnDocumentActivated(document);

            if (document == null || this.Ribbon == null)
            {
                return;
            }

            if (document.Control is UCDrawEdit)
            {
                UCDrawEdit editor = document.Control as UCDrawEdit;
                if (this.ActiveFloatDocument != null)
                {
                    UCDrawEdit editorFloat = this.ActiveFloatDocument.Control as UCDrawEdit;
                    if (object.ReferenceEquals(editor, editorFloat))
                    {
                        return;
                    }
                }
                this.BeginUpdate();
                if (editor != null)
                {
                    if (!object.ReferenceEquals(this.Ribbon.MergedRibbon, editor.ribbonMain))
                    {
                        this.Ribbon.MergeRibbon(editor.ribbonMain);
                    }
                }
                else
                {
                    this.Ribbon.UnMergeRibbon();
                }
                this.EndUpdate();
            }

            if (document.Control is UCVtkEdit)
            {
                UCVtkEdit editor = document.Control as UCVtkEdit;
                if (this.ActiveFloatDocument != null)
                {
                    UCVtkEdit editorFloat = this.ActiveFloatDocument.Control as UCVtkEdit;
                    if (object.ReferenceEquals(editor, editorFloat))
                    {
                        return;
                    }
                }
                this.BeginUpdate();
                if (editor != null)
                {
                    if (!object.ReferenceEquals(this.Ribbon.MergedRibbon, editor.RibbonControlMain))
                    {
                        this.Ribbon.MergeRibbon(editor.RibbonControlMain);
                    }
                }
                else
                {
                    this.Ribbon.UnMergeRibbon();
                }
                this.EndUpdate();
            }

            OtherDocumentActivated?.Invoke(this, new DocumentEventArgs(document));
        }

        /// <inheritdoc/>
        protected override bool OnBeginDocking(BaseDocument document)
        {
            if (this.InvalidDocumentTypes.Contains(document.Control.GetType()))
            {
                return false;
            }

            return base.OnBeginDocking(document);
        }

        /// <inheritdoc/>
        protected override void OnEndDocking(BaseDocument document)
        {
            BeginUpdate();
            if (document.Control is UCDrawEdit editor)
            {
                this.Ribbon.MergeRibbon(editor.ribbonMain);
            }
            else if (document.Control is UCVtkEdit vtkEditor)
            {
                this.Ribbon.MergeRibbon(vtkEditor.RibbonControlMain);
            }
            else
            {
                this.Ribbon.UnMergeRibbon();
            }

            base.OnEndDocking(document);
            this.EndUpdate();
        }

        /// <inheritdoc/>
        protected override void OnFloating(BaseDocument document)
        {
            // this.BeginUpdate();
            base.OnFloating(document);

            if (document.Control is UCDrawEdit editor)
            {
                editor.ribbonMain.Dock = DockStyle.Top;
                editor.ribbonMain.SendToBack();
            }

            if (document.Control is UCVtkEdit vtkEditor)
            {
                vtkEditor.RibbonControlMain.Dock = DockStyle.Top;
                vtkEditor.RibbonControlMain.SendToBack();
            }
            // this.EndUpdate();
        }
        /// <summary>
        /// 获得临近的文档
        /// </summary>
        /// <param name="documents">文档集合</param>
        /// <param name="document">当前文档</param>
        /// <returns>临近的文档</returns>
        protected BaseDocument GetNeighborDocument(BaseDocument[] documents, BaseDocument document)
        {
            int nLength = documents.Length;
            if (nLength == 1)
            {
                return null;
            }
            int nIndex = Array.IndexOf<BaseDocument>(documents, document);
            if (nIndex == nLength - 1)
            {
                return documents[nIndex - 1];
            }
            return documents[nIndex + 1];
        }
    }
}