From ec20fdef7badebc12621e20c0d66de94243fdb1a Mon Sep 17 00:00:00 2001
From: Přemysl Eric Janouch <p@janouch.name>
Date: Sun, 18 Sep 2022 05:53:44 +0200
Subject: xP: show all completion options

---
 xP/public/xP.js | 42 +++++++++++++++++++++++++++++++++++-------
 1 file changed, 35 insertions(+), 7 deletions(-)

(limited to 'xP/public/xP.js')

diff --git a/xP/public/xP.js b/xP/public/xP.js
index 1cdb8b0..dbba7e2 100644
--- a/xP/public/xP.js
+++ b/xP/public/xP.js
@@ -652,11 +652,28 @@ let Log = {
 	},
 }
 
+let Completions = {
+	entries: [],
+
+	reset: list => {
+		Completions.entries = list || []
+		m.redraw()
+	},
+
+	view: vnode => {
+		if (!Completions.entries.length)
+			return
+		return m('.completions', {},
+			Completions.entries.map(option => m('.completion', {}, option)))
+	},
+}
+
 let BufferContainer = {
 	view: vnode => {
 		return m('.buffer-container', {}, [
 			m('.filler'),
 			bufferLog !== undefined ? m(Log) : m(Buffer),
+			m(Completions),
 		])
 	},
 }
@@ -711,17 +728,20 @@ let Input = {
 
 			let preceding = utf8Encode(textarea.value).slice(0, resp.start)
 			let start = utf8Decode(preceding).length
-
-			// TODO: Somehow display remaining options, or cycle through.
-			if (resp.completions.length) {
+			if (resp.completions.length > 0) {
 				textarea.setRangeText(resp.completions[0],
 					start, textarea.selectionEnd, 'end')
-			} else {
-				beep()
 			}
-			if (resp.completions.length === 1)
+
+			if (resp.completions.length == 1) {
 				textarea.setRangeText(' ',
 					textarea.selectionStart, textarea.selectionEnd, 'end')
+			} else {
+				beep()
+			}
+
+			if (resp.completions.length > 1)
+				Completions.reset(resp.completions.slice(1))
 		})
 		return true
 	},
@@ -886,7 +906,15 @@ let Input = {
 	},
 
 	view: vnode => {
-		return m('textarea#input', {rows: 1, onkeydown: Input.onKeyDown})
+		return m('textarea#input', {
+			rows: 1,
+			onkeydown: Input.onKeyDown,
+			oninput: event => Completions.reset(),
+			// Sadly only supported in Firefox as of writing.
+			onselectionchange: event => Completions.reset(),
+			// The list of completions is scrollable without receiving focus.
+			onblur: event => Completions.reset(),
+		})
 	},
 }
 
-- 
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