feat: add columns

src/DynamicTreeDataGrid/Columns/DynamicCheckBoxColumn.cs

@@ -0,0 +1,56 @@
+using System.Linq.Expressions;
+
+using Avalonia.Controls;
+using Avalonia.Controls.Models.TreeDataGrid;
+using Avalonia.Experimental.Data;
+
+namespace DynamicTreeDataGrid.Columns;
+
+public class DynamicCheckBoxColumn<TModel> : CheckBoxColumn<TModel>
+	where TModel : class {
+	/// <summary>
+	/// Initializes a new instance of the <see cref="CheckBoxColumn{TModel}"/> class.
+	/// </summary>
+	/// <param name="header">The column header.</param>
+	/// <param name="getter">
+	/// An expression which given a row model, returns a boolean cell value for the column.
+	/// </param>
+	/// <param name="setter">
+	/// A method which given a row model and a cell value, writes the cell value to the
+	/// row model. If not supplied then the column will be read-only.
+	/// </param>
+	/// <param name="width">
+	/// The column width. If null defaults to <see cref="GridLength.Auto"/>.
+	/// </param>
+	/// <param name="options">Additional column options.</param>
+	public DynamicCheckBoxColumn(object? header,
+	                             Expression<Func<TModel, bool>> getter,
+	                             Action<TModel, bool>? setter = null,
+	                             GridLength? width = null,
+	                             CheckBoxColumnOptions<TModel>? options = null) : base(header, getter, setter, width,
+		options) { }
+
+	/// <summary>
+	/// Initializes a new instance of the <see cref="CheckBoxColumn{TModel}"/> class that
+	/// displays a three-state check box.
+	/// </summary>
+	/// <param name="header">The column header.</param>
+	/// <param name="getter">
+	/// An expression which given a row model, returns a nullable boolean cell value for the
+	/// column.
+	/// </param>
+	/// <param name="setter">
+	/// A method which given a row model and a cell value, writes the cell value to the
+	/// row model. If not supplied then the column will be read-only.
+	/// </param>
+	/// <param name="width">
+	/// The column width. If null defaults to <see cref="GridLength.Auto"/>.
+	/// </param>
+	/// <param name="options">Additional column options.</param>
+	public DynamicCheckBoxColumn(object? header,
+	                             Expression<Func<TModel, bool?>> getter,
+	                             Action<TModel, bool?>? setter = null,
+	                             GridLength? width = null,
+	                             CheckBoxColumnOptions<TModel>? options = null) : base(header, getter, setter, width,
+		options ?? new CheckBoxColumnOptions<TModel>()) { }
+}

src/DynamicTreeDataGrid/Columns/DynamicTemplateColumn.cs

@@ -0,0 +1,21 @@
+using Avalonia.Controls;
+using Avalonia.Controls.Models.TreeDataGrid;
+using Avalonia.Controls.Templates;
+
+namespace DynamicTreeDataGrid.Columns;
+
+public class DynamicTemplateColumn<TModel> : TemplateColumn<TModel> {
+	public DynamicTemplateColumn(object? header,
+	                             IDataTemplate cellTemplate,
+	                             IDataTemplate? cellEditingTemplate = null,
+	                             GridLength? width = null,
+	                             TemplateColumnOptions<TModel>? options = null) : base(header, cellTemplate,
+		cellEditingTemplate, width, options) { }
+
+	public DynamicTemplateColumn(object? header,
+	                             object cellTemplateResourceKey,
+	                             object? cellEditingTemplateResourceKey = null,
+	                             GridLength? width = null,
+	                             TemplateColumnOptions<TModel>? options = null) : base(header, cellTemplateResourceKey,
+		cellEditingTemplateResourceKey, width, options) { }
+}

src/DynamicTreeDataGrid/Columns/DynamicTextColumn.cs

@@ -0,0 +1,47 @@
+using System.Linq.Expressions;
+
+using Avalonia.Controls;
+using Avalonia.Controls.Models.TreeDataGrid;
+
+namespace DynamicTreeDataGrid.Columns;
+
+public class DynamicTextColumn<TModel, TValue> : TextColumn<TModel, TValue>
+	where TModel : class {
+	/// <summary>
+	/// Initializes a new instance of the <see cref="TextColumn{TModel, TValue}"/> class.
+	/// </summary>
+	/// <param name="header">The column header.</param>
+	/// <param name="getter">
+	/// An expression which given a row model, returns a cell value for the column.
+	/// </param>
+	/// <param name="width">
+	/// The column width. If null defaults to <see cref="GridLength.Auto"/>.
+	/// </param>
+	/// <param name="options">Additional column options.</param>
+	public DynamicTextColumn(object? header,
+	                         Expression<Func<TModel, TValue?>> getter,
+	                         GridLength? width = null,
+	                         TextColumnOptions<TModel>? options = null) : base(header, getter, width, options) { }
+
+	/// <summary>
+	/// Initializes a new instance of the <see cref="TextColumn{TModel, TValue}"/> class.
+	/// </summary>
+	/// <param name="header">The column header.</param>
+	/// <param name="getter">
+	/// An expression which given a row model, returns a cell value for the column.
+	/// </param>
+	/// <param name="setter">
+	/// A method which given a row model and a cell value, writes the cell value to the
+	/// row model.
+	/// </param>
+	/// <param name="width">
+	/// The column width. If null defaults to <see cref="GridLength.Auto"/>.
+	/// </param>
+	/// <param name="options">Additional column options.</param>
+	public DynamicTextColumn(object? header,
+	                         Expression<Func<TModel, TValue?>> getter,
+	                         Action<TModel, TValue?> setter,
+	                         GridLength? width = null,
+	                         TextColumnOptions<TModel>? options = null) : base(header, getter, setter, width,
+		options ?? new()) { }
+}