bookmark-manager-r4/Windows/Forms/BookmarkTreeView.cs

using System;
using System.ComponentModel;
using System.Drawing;
using System.Reflection;
using System.Windows.Forms;
using bzit.bomg.Models;
using FizzyLauncher;
using Resources = BookmarkManager.AppResource;

namespace RyzStudio.Windows.Forms
{
    public partial class BookmarkTreeView : TTreeView
    {
        public enum NodeIcon
        {
            Root = 0,
            Folder1,
            Folder2,
            Default
        }

        public enum NodeType
        {
            None = 0,
            Root,
            Folder,
            Page
        }


        protected const string DEFAULT_NEW_FOLDER_NAME = "New Folder";


        public BookmarkTreeView()
        {
            if (this.ImageList == null)
            {
                this.ImageList = new ImageList();
            }

            //this.PathSeparator = PATH_SEPARATOR;

            //this.AllowDrop = true;
            //this.HideSelection = false;
            //this.HotTracking = true;
            //this.ImageIndex = 0;
            //this.LabelEdit = true;
            //this.PathSeparator = "\n";
            //this.SelectedImageIndex = 0;
            //this.ShowNodeToolTips = true;

            this.ImageList.ColorDepth = ColorDepth.Depth32Bit;
            this.ImageList.ImageSize = new Size(16, 16);
            this.ImageList.TransparentColor = Color.Transparent;

            ClearImageList();
        }


#region integrated behaviour

        protected override void OnNodeMouseClick(TreeNodeMouseClickEventArgs e)
        {
            if (e.Button == MouseButtons.Right)
            {
                switch (this.GetNodeType())
                {
                    case BookmarkTreeView.NodeType.Root:
                        if (this.RootContextMenu != null) this.RootContextMenu.Show(e.Node.TreeView, e.X, e.Y);
                        break;
                    case BookmarkTreeView.NodeType.Folder:
                        if (this.FolderContextMenu != null) this.FolderContextMenu.Show(e.Node.TreeView, e.X, e.Y);
                        break;
                    case BookmarkTreeView.NodeType.Page:
                        if (this.PageContextMenu != null) this.PageContextMenu.Show(e.Node.TreeView, e.X, e.Y);
                        break;
                    default:
                        break;
                }
            }

            base.OnNodeMouseClick(e);
        }

        protected override void OnPreviewKeyDown(PreviewKeyDownEventArgs e)
        {
            TreeNode tn = this.SelectedNode;
            if (tn == null)
            {
                return;
            }

            NodeType nodeType = this.GetNodeType();

            switch (e.KeyCode)
            {
                case Keys.Insert:
                    if (e.Modifiers == Keys.Shift)
                    {
                        if ((nodeType == NodeType.Root) || (nodeType == NodeType.Folder))
                        {
                            this.SelectedNode = this.AddFolder();
                        }
                        else if (nodeType == NodeType.Page)
                        {
                            this.SelectedNode = tn.Parent;
                            this.SelectedNode = this.AddFolder();
                        }
                    }
                    else
                    {
                        if ((nodeType == NodeType.Root) || (nodeType == NodeType.Folder))
                        {
                            this.SelectedNode = this.AddNode();
                        }
                        else if (nodeType == NodeType.Page)
                        {
                            this.SelectedNode = tn.Parent;
                            this.SelectedNode = this.AddNode();
                        }
                    }

                    break;
                case Keys.Delete:
                    if (!tn.IsEditing)
                    {
                        if (MessageBox.Show("Delete?", "Delete?", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question) == DialogResult.Yes)
                        {
                            this.DeleteNode();

                            this.HasChanged = true;
                        }
                    }

                    break;
                case Keys.F2:
                    this.EditNode();

                    break;
                case Keys.F3:
                    switch (nodeType)
                    {
                        case NodeType.Root:
                        case NodeType.Folder:
                            try
                            {
                                Clipboard.SetText(tn.Text ?? string.Empty);
                            }
                            catch
                            {
                            }

                            break;
                        case NodeType.Page:
                            var viewModel = UIControl.GetTag<BookmarkModel>(this.SelectedNode);
                            if (viewModel != null)
                            {
                                try
                                {
                                    Clipboard.SetText(viewModel.Address ?? string.Empty);
                                }
                                catch
                                {
                                }
                            }

                            break;
                        default:
                            break;
                    }

                    break;
                case Keys.Up:
                    if (e.Modifiers == Keys.Control)
                    {
                        this.MoveUp();
                        this.HasChanged = true;
                    }

                    break;
                case Keys.Down:
                    if (e.Modifiers == Keys.Control)
                    {
                        this.MoveDown();
                        this.HasChanged = true;
                    }

                    break;
                case Keys.Apps:
                    this.OnNodeMouseClick(new TreeNodeMouseClickEventArgs(tn, MouseButtons.Right, 1, tn.Bounds.X, tn.Bounds.Y));
                    break;
                default: break;
            }

            base.OnPreviewKeyDown(e);
        }

#endregion

        [Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        public ContextMenuStrip RootContextMenu { get; set; } = null;

        [Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        public ContextMenuStrip FolderContextMenu { get; set; } = null;

        [Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        public ContextMenuStrip PageContextMenu { get; set; } = null;

        [Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        public new bool HasChanged
        {
            get => base.HasChanged;
            set
            {
                base.HasChanged = value;
            }
        }


        public TreeNode AddFolder(TreeNode node = null, string name = "", bool quol = true)
        {
            if (node == null)
            {
                node = this.SelectedNode;
            }

            var nodeType = GetNodeType(node);
            if ((nodeType != NodeType.Root) && (nodeType != NodeType.Folder))
            {
                return null;
            }

            if (string.IsNullOrWhiteSpace(name))
            {
                name = DEFAULT_NEW_FOLDER_NAME;
            }

            var key = EncodeNodeName(name);
            var treeNode = node.Nodes.Add(key, name, (int)NodeIcon.Folder1, (int)NodeIcon.Folder2);

            if (quol)
            {
                node.Expand();

                this.SelectedNode = treeNode;

                this.EditNode(treeNode);
            }

            this.HasChanged = true;

            return treeNode;
        }

        public TreeNode AddNode(TreeNode node = null)
        {
            if (node == null)
            {
                node = this.SelectedNode;
            }

            var nodeType = GetNodeType(node);
            if ((nodeType != NodeType.Root) && (nodeType != NodeType.Folder))
            {
                return null;
            }

            var form = new EditBookmarkForm();
            if (form.ShowDialog() == DialogResult.OK)
            {
                var model = form.Result;
                model.Path = GetNodePath(node);

                var newNode = this.AddNode(model);
                if (newNode != null)
                {
                    newNode.EnsureVisible();

                    this.SelectedNode = newNode;

                    this.HasChanged = true;

                    return newNode;
                }
            }

            return null;
        }

        public TreeNode AddNode(BookmarkModel model)
        {
            var parentNode = this.CreateNodePath(model?.Path?.Trim() ?? string.Empty, (int)NodeIcon.Folder1, (int)NodeIcon.Folder2);

            // Add custom favicon
            var n = AddImage(model.Id.ToString(), model.Icon);

            TreeNode newNode = new TreeNode(model?.Title?.Trim() ?? string.Empty, n, n);
            newNode.Tag = model;
            newNode.ToolTipText = model.ToString();

            UIControl.Add(parentNode, newNode);

            this.HasChanged = true;

            return newNode;
        }

        public void Clear(string rootName)
        {
            ClearImageList();

            UIControl.Clear(this);

            UIControl.Invoke(this, (x) =>
            {
                this.Nodes.Add("", rootName?.Trim() ?? string.Empty, (int)NodeIcon.Root, (int)NodeIcon.Root);
            });

            this.HasChanged = true;
        }

        public TreeNode EditNode(TreeNode node = null)
        {
            if (node == null)
            {
                node = this.SelectedNode;
            }

            if (node.IsEditing)
            {
                return null;
            }

            var nodeType = GetNodeType(node);
            if ((nodeType == NodeType.Root) || (nodeType == NodeType.Folder))
            {
                _allowBeginEdit = true;

                node.BeginEdit();
            }
            else if (nodeType == NodeType.Page)
            {
                var model = UIControl.GetTag<BookmarkModel>(node);
                model.Path = GetNodePath(node);

                var form = new EditBookmarkForm(model);
                if (form.ShowDialog() == DialogResult.OK)
                {
                    this.UpdateNode(node, form.Result);
                }
            }

            return node;
        }

        public NodeType GetNodeType(TreeNode node = null)
        {
            if (node == null)
            {
                node = this.SelectedNode;
            }

            if (node == null)
            {
                return NodeType.None;
            }

            if (node.Tag == null)
            {
                if (node.Equals(node.TreeView.Nodes[0]))
                {
                    return NodeType.Root;
                }
                else
                {
                    return NodeType.Folder;
                }
            }
            else
            {
                if (node.Tag is BookmarkModel)
                {
                    return NodeType.Page;
                }
                else
                {
                    return NodeType.None;
                }
            }
        }

        public void UpdateNode(TreeNode node, BookmarkModel model)
        {
            if (node == null)
            {
                node = this.SelectedNode;
                return;
            }

            if (model == null)
            {
                return;
            }

            if (model.Id == Guid.Empty)
            {
                return;
            }

            // Update custom favicon
            var n = AddImage(model.Id.ToString(), model.Icon);

            UIControl.Invoke(this, (x) =>
            {
                node.Text = model.Title;
                node.ImageIndex = node.SelectedImageIndex = n;
                node.Tag = model;
                node.ToolTipText = model.ToString();
            });

            this.HasChanged = true;
        }


        private void ClearImageList()
        {
            UIControl.Invoke(this, (x) =>
            {
                this.ImageList.Images.Clear();
                this.ImageList.Images.Add(Resources.hexagon);
                this.ImageList.Images.Add(Resources.folder);
                this.ImageList.Images.Add(Resources.folder_explore);
                this.ImageList.Images.Add("default", Resources.file_text);
            });
        }

        private int AddImage(string key, Image image)
        {
            if (image == null)
            {
                return (int)NodeIcon.Default;
            }

            try
            {
                if (image.Width <= 0)
                {
                    return (int)NodeIcon.Default;
                }
            }
            catch (Exception)
            {
                return (int)NodeIcon.Default;
            }

            UIControl.Invoke(this, (x) =>
            {
                if (this.ImageList.Images.ContainsKey(key))
                {
                    var n = this.ImageList.Images.IndexOfKey(key);

                    this.ImageList.Images.SetKeyName(n, ".deleted");
                }

                this.ImageList.Images.Add(key, image);
            });

            return this.ImageList.Images.IndexOfKey(key);
        }

    }
}