Get rid of meta directories. Centralize directory logic. New UI component to revamp settings and installation

LibationWinForms/Dialogs/DirectoryOrCustomSelectControl.cs

@@ -0,0 +1,88 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Windows.Forms;
+using Dinah.Core;
+using FileManager;
+
+namespace LibationWinForms.Dialogs
+{
+	public partial class DirectoryOrCustomSelectControl : UserControl
+	{
+		public string SelectedDirectory
+			=> customDirectoryRb.Checked ? customTb.Text.Trim()
+			: knownDirectoryRb.Checked ? directorySelectControl.SelectedDirectory
+			: null;
+
+		public DirectoryOrCustomSelectControl()
+		{
+			InitializeComponent();
+
+			// doing this after InitializeComponent will fire event
+			this.knownDirectoryRb.Checked = true;
+		}
+
+		/// <summary>Set items for combobox</summary>
+		/// <param name="knownDirectories">List rather than IEnumerable so that client can determine display order</param>
+		/// <param name="defaultDirectory"></param>
+		public void SetDirectoryItems(List<Configuration.KnownDirectories> knownDirectories, Configuration.KnownDirectories? defaultDirectory = Configuration.KnownDirectories.UserProfile)
+			=> this.directorySelectControl.SetDirectoryItems(knownDirectories, defaultDirectory);
+
+		/// <summary>select, set default, or rehydrate</summary>
+		/// <param name="directory"></param>
+		public void SelectDirectory(Configuration.KnownDirectories directory)
+		{
+			// if None: take no action
+			if (directory != Configuration.KnownDirectories.None)
+				selectDir(directory, null);
+		}
+
+		/// <summary>select, set default, or rehydrate</summary>
+		public void SelectDirectory(string directory)
+		{
+			directory = directory?.Trim() ?? "";
+			selectDir(Configuration.GetKnownDirectory(directory), directory);
+		}
+
+		private void selectDir(Configuration.KnownDirectories knownDir, string customDir)
+		{
+			var unknown = knownDir == Configuration.KnownDirectories.None;
+			customDirectoryRb.Checked = unknown;
+			knownDirectoryRb.Checked = !unknown;
+			this.directorySelectControl.SelectDirectory(knownDir);
+			this.customTb.Text = unknown ? customDir : "";
+		}
+
+		private string dirSearchTitle;
+		public void SetSearchTitle(string dirSearchTitle) => this.dirSearchTitle = dirSearchTitle?.Trim();
+
+		private void customBtn_Click(object sender, EventArgs e)
+		{
+			using var dialog = new FolderBrowserDialog
+			{
+				Description = string.IsNullOrWhiteSpace(dirSearchTitle) ? "Search" : $"Search for {dirSearchTitle}",
+				SelectedPath = this.customTb.Text
+			};
+			dialog.ShowDialog();
+			if (!string.IsNullOrWhiteSpace(dialog.SelectedPath))
+				this.customTb.Text = dialog.SelectedPath;
+		}
+
+		private void radioButton_CheckedChanged(object sender, EventArgs e)
+		{
+			var isCustom = this.customDirectoryRb.Checked;
+
+			customTb.Enabled = isCustom;
+			customBtn.Enabled = isCustom;
+
+			directorySelectControl.Enabled = !isCustom;
+		}
+
+		private void DirectoryOrCustomSelectControl_Load(object sender, EventArgs e)
+		{
+			if (this.DesignMode)
+				return;
+
+		}
+	}
+}