From ad7de10b2bbe555daa4e9ca2811aa34961661796 Mon Sep 17 00:00:00 2001
From: Joao Moreno <joao.moreno@microsoft.com>
Date: Sat, 23 Jun 2018 17:54:26 +0200
Subject: [PATCH] tree: first sketch

---
 src/vs/base/browser/ui/tree/tree.ts | 50 +++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 src/vs/base/browser/ui/tree/tree.ts

diff --git a/src/vs/base/browser/ui/tree/tree.ts b/src/vs/base/browser/ui/tree/tree.ts
new file mode 100644
index 00000000000..15333f33b60
--- /dev/null
+++ b/src/vs/base/browser/ui/tree/tree.ts
@@ -0,0 +1,50 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import { IDisposable } from 'vs/base/common/lifecycle';
+import { IListOptions, List } from 'vs/base/browser/ui/list/listWidget';
+import { TreeModel, ITreeListElement, ITreeElement } from 'vs/base/browser/ui/tree/treeModel';
+import { IIterator, empty } from 'vs/base/common/iterator';
+import { IDelegate, IRenderer } from 'vs/base/browser/ui/list/list';
+
+export interface ITreeOptions<T> extends IListOptions<T> { }
+
+const DefaultOptions: ITreeOptions<any> = {
+	keyboardSupport: true,
+	mouseSupport: true,
+	multipleSelectionSupport: true
+};
+
+// export type IDelegate<T> = IListDelegate<ITreeListElement<T>>;
+// export type IRenderer<T, TTemplateData> = IListRenderer<ITreeListElement<T>, TTemplateData>;
+
+export class Tree<T> implements IDisposable {
+
+	private list: List<ITreeListElement<T>>;
+	private model: TreeModel<T>;
+
+	constructor(
+		container: HTMLElement,
+		delegate: IDelegate<T>,
+		renderers: IRenderer<T, any>[],
+		options: ITreeOptions<T> = DefaultOptions
+	) {
+		// TODO map provided args into these
+		const listDelegate: IDelegate<ITreeListElement<T>> = undefined;
+		const listRenderers: IRenderer<ITreeListElement<T>, any>[] = [];
+		const listOptions: ITreeOptions<ITreeListElement<T>> = undefined;
+
+		this.list = new List(container, listDelegate, listRenderers, listOptions);
+		this.model = new TreeModel<T>(this.list);
+	}
+
+	splice(location: number[], deleteCount: number, toInsert: IIterator<ITreeElement<T>> = empty()): IIterator<ITreeElement<T>> {
+		return this.model.splice(location, deleteCount, toInsert);
+	}
+
+	dispose(): void {
+		this.list.dispose();
+	}
+}
\ No newline at end of file