From 39c0919652ef8c0b5318358d8431ce500e466f69 Mon Sep 17 00:00:00 2001
From: Pietro Gagliardi <pietro10@mac.com>
Date: Sat, 16 Aug 2014 09:14:23 -0400
Subject: [PATCH] Added a proposal for Tree.

---
 redo/proposals/tree.md | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 redo/proposals/tree.md

diff --git a/redo/proposals/tree.md b/redo/proposals/tree.md
new file mode 100644
index 0000000..a4752f6
--- /dev/null
+++ b/redo/proposals/tree.md
@@ -0,0 +1,35 @@
+# Tree
+
+Unlike Table, Tree can only store a set of a single data type. (Blame Windows.)
+
+```go
+type TreeData struct {
+	Checked		bool
+	Image		ImageIndex
+	Text			string
+	Children		[]TreeData		// TODO does this need to be *[]TreeData?
+}
+```
+
+(the facilities for Images has yet to be designed)
+
+Tree itself will operate similarly to Table:
+
+```go
+type Tree struct {
+	Control
+	sync.Locker		// with Unlock() refreshing the view
+	Data() *[]TreeData
+	SetHasCheckboxes(bool)
+	SetHasImages(bool)
+}
+```
+
+By default, a Tree only shows the Text field.
+
+A Tree path is just an `[]int` with each element set to the consecutive index in Children. For example:
+
+```go
+i := []int{3, 4, 5}
+value := tree.Data()[i[0]].Children[i[1]].Children[i[2]].Text
+```