linear-app-launcher/Windows/Forms/Tile/TTilePanel.cs

using AppLauncher.Models;
using System;
using System.ComponentModel;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Windows.Forms;

namespace AppLauncher.Windows.Forms
{
    public partial class TTilePanel : AUserControl
    {
        protected bool isDragging = false;
        protected Point startPosition = new Point();

        protected ContextMenuStrip groupContextMenu = null;
        protected TileModel modelInfo = new TileModel();

        public TTilePanel() : base()
        {
            InitializeComponent();

            this.BackColor = Color.FromArgb(250, 250, 250);
            this.ContextMenuStrip = contextMenuStrip1;

            label1.ForeColor = Color.FromArgb(99, 105, 119);
            label1.Font = new Font(this.Font.FontFamily, 8.25F);

            this.MouseDown += panel_MouseDown;
            this.MouseUp += panel_MouseUp;
            this.MouseMove += panel_MouseMove;
            pictureBox1.MouseDown += panel_MouseDown;
            pictureBox1.MouseUp += panel_MouseUp;
            pictureBox1.MouseMove += panel_MouseMove;
            label1.MouseDown += panel_MouseDown;
            label1.MouseUp += panel_MouseUp;
            label1.MouseMove += panel_MouseMove;
        }

        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);

            Graphics g = e.Graphics;

            g.DrawRectangle(new Pen(Color.FromArgb(204, 206, 218), 1), new Rectangle(this.DisplayRectangle.X, this.DisplayRectangle.Y, (this.DisplayRectangle.Width - 1), (this.DisplayRectangle.Height - 1)));

        }

        [Category("Appearance"), Browsable(true)]
        public string Title { get => label1.Text; protected set => label1.Text = value; }

        [Category("Appearance"), Browsable(true)]
        public Image Image { get => pictureBox1.BackgroundImage; protected set => pictureBox1.BackgroundImage = value; }

        [Browsable(false)]
        public TileModel ModelInfo => modelInfo;

        public TTilePanelLayout PanelContainer
        {
            get
            {
                if (this.Parent == null)
                {
                    return null;
                }

                if (this.Parent.GetType() != typeof(TTilePanelLayout))
                {
                    return null;
                }

                return (TTilePanelLayout)this.Parent;
            }
        }

        public void LoadInfo(TileModel model)
        {
            this.modelInfo = model;

            this.Image = null;
            this.Title = model.Title;

            if (this.modelInfo.IsGroup)
            {
                this.Image = Properties.Resources.folder_32;

                invalidateGroupMenu(this.modelInfo);
            }
            else
            {
                this.Image = getIcon(model);
            }

            toolTip1.SetToolTip(this, this.Title);
            toolTip1.SetToolTip(pictureBox1, this.Title);
            toolTip1.SetToolTip(label1, this.Title);
        }

        private void panel_MouseDown(object sender, MouseEventArgs e)
        {
            TTilePanelLayout container = this.PanelContainer;
            if (container == null)
            {
                return;
            }

            this.BringToFront();

            if (((e.Button == MouseButtons.Left) && (Control.ModifierKeys == Keys.Control)) || (e.Button == MouseButtons.Right))
            {
                isDragging = true;
                startPosition = e.Location;
            }
        }

        private void panel_MouseUp(object sender, MouseEventArgs e)
        {
            isDragging = false;
        }

        private void panel_MouseMove(object sender, MouseEventArgs e)
        {
            if (isDragging)
            {
                TTilePanelLayout layoutPanel = this.PanelContainer;
                if (layoutPanel == null)
                {
                    return;
                }

                int x = (this.Location.X + (e.Location.X - startPosition.X));
                int y = (this.Location.Y + (e.Location.Y - startPosition.Y));

                layoutPanel.MoveTile(this, x, y);
            }
        }

        private void panel_MouseClick(object sender, MouseEventArgs e)
        {
            if (Control.ModifierKeys == Keys.Control) return;
            if (this.ModelInfo == null) return;

            if (e.Button == MouseButtons.Left)
            {
                if (this.ModelInfo.IsGroup)
                {
                    if (groupContextMenu != null)
                    {
                        groupContextMenu.Show(this, e.Location);
                    }
                }
                else
                {
                    panel_MouseDoubleClick(sender, e);
                }
            }
        }

        private void panel_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            if (Control.ModifierKeys == Keys.Control) return;

            if (e.Button == MouseButtons.Left)
            {
                execute(this.ModelInfo);
            }
        }

        private void editToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (this.ModelInfo.IsGroup)
            {
                EditListTileForm.ShowDialog(this);
            }
            else
            {
                EditTileForm.ShowDialog(this);
            }
        }

        private void removeToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (this.PanelContainer == null)
            {
                return;
            }

            this.PanelContainer.Remove(this);
        }

        protected void execute(TileModel model)
        {
            if (model == null)
            {
                return;
            }

            if (model.IsGroup)
            {
                return;
            }

            if (string.IsNullOrWhiteSpace(model.ProcessFilename))
            {
                return;
            }

            if (!File.Exists(model.ProcessFilename))
            {
                return;
            }

            ProcessStartInfo p = new ProcessStartInfo();
            p.FileName = model.ProcessFilename;
            p.WindowStyle = model.ProcessWindowStyle;
            if (!string.IsNullOrWhiteSpace(model.ProcessArgument)) p.Arguments = model.ProcessArgument;
            if (!string.IsNullOrWhiteSpace(model.ProcessWorkingDirectory)) p.WorkingDirectory = model.ProcessWorkingDirectory;
            if (model.ProcessAsAdmin) p.Verb = "runas";

            try
            {
                Process.Start(p);
            }
            catch (Exception exc)
            {
                MessageBox.Show(exc.Message);
            }
        }

        protected Image getIcon(TileModel model)
        {
            if (!File.Exists(model.ProcessFilename))
            {
                return null;
            }

            try
            {
                return Icon.ExtractAssociatedIcon(model.ProcessFilename)?.ToBitmap();
            }
            catch
            {
                // do nothing
            }

            return null;
        }

        protected void invalidateGroupMenu(TileModel model)
        {
            if (groupContextMenu == null) groupContextMenu = new ContextMenuStrip();
            groupContextMenu.Items.Clear();

            if (model.Items == null)
            {
                return;
            }

            foreach (TileModel item in model.Items)
            {
                ToolStripItem toolItem = groupContextMenu.Items.Add(item.Title);
                toolItem.Image = getIcon(item);
                toolItem.Tag = item;
                toolItem.Click += toolItem_Click;
            }

        }

        private void toolItem_Click(object sender, EventArgs e)
        {
            if (sender.GetType() != typeof(ToolStripMenuItem))
            {
                return;
            }

            ToolStripMenuItem item = (sender as ToolStripMenuItem);
            if (item.Tag == null)
            {
                return;
            }

            if (item.Tag.GetType() != typeof(TileModel))
            {
                return;
            }

            TileModel model = (item.Tag as TileModel);
            execute(model);
        }

    }
}