From 0bc2c12eecfb5b035c498272556f8fc6a39059a9 Mon Sep 17 00:00:00 2001
From: Přemysl Eric Janouch <p@janouch.name>
Date: Sat, 10 Sep 2022 19:33:39 +0200
Subject: xP: handle the M-Tab binding from xC

---
 xP/public/xP.js | 41 +++++++++++++++++++++++++----------------
 1 file changed, 25 insertions(+), 16 deletions(-)

diff --git a/xP/public/xP.js b/xP/public/xP.js
index 5f73b5f..c2e0e03 100644
--- a/xP/public/xP.js
+++ b/xP/public/xP.js
@@ -132,6 +132,7 @@ class RelayRpc extends EventTarget {
 let rpc = new RelayRpc(proxy)
 
 let buffers = new Map()
+let bufferLast = undefined
 let bufferCurrent = undefined
 let bufferLog = undefined
 let bufferAutoscroll = true
@@ -142,9 +143,14 @@ function resetBufferStats(b) {
 	b.highlighted = false
 }
 
+function bufferActivate(name) {
+	rpc.send({command: 'BufferActivate', bufferName: name})
+}
+
 let connecting = true
 rpc.connect().then(result => {
 	buffers.clear()
+	bufferLast = undefined
 	bufferCurrent = undefined
 	bufferLog = undefined
 	bufferAutoscroll = true
@@ -193,6 +199,8 @@ rpc.addEventListener('BufferRename', event => {
 rpc.addEventListener('BufferRemove', event => {
 	let e = event.detail
 	buffers.delete(e.bufferName)
+	if (e.bufferName === bufferLast)
+		bufferLast = undefined
 })
 
 rpc.addEventListener('BufferActivate', event => {
@@ -200,6 +208,7 @@ rpc.addEventListener('BufferActivate', event => {
 	if (old !== undefined)
 		resetBufferStats(old)
 
+	bufferLast = bufferCurrent
 	let e = event.detail, b = buffers.get(e.bufferName)
 	bufferCurrent = e.bufferName
 	bufferLog = undefined
@@ -324,10 +333,6 @@ let Toolbar = {
 }
 
 let BufferList = {
-	activate: name => {
-		rpc.send({command: 'BufferActivate', bufferName: name})
-	},
-
 	view: vnode => {
 		let items = Array.from(buffers, ([name, b]) => {
 			let classes = [], displayName = name
@@ -342,7 +347,7 @@ let BufferList = {
 				}
 			}
 			return m('.item', {
-				onclick: event => BufferList.activate(name),
+				onclick: event => bufferActivate(name),
 				class: classes.join(' '),
 			}, displayName)
 		})
@@ -578,11 +583,13 @@ let Input = {
 		let handled = false
 		switch (event.keyCode) {
 		case 9:
-			if (!event.shiftKey)
+			if (!event.ctrlKey && !event.metaKey && !event.altKey &&
+				!event.shiftKey)
 				handled = Input.complete(textarea)
 			break
 		case 13:
-			if (!event.shiftKey)
+			if (!event.ctrlKey && !event.metaKey && !event.altKey &&
+				!event.shiftKey)
 				handled = Input.submit(textarea)
 			break
 		}
@@ -619,21 +626,23 @@ document.addEventListener('keydown', event => {
 	if (rpc.ws == undefined || event.ctrlKey || event.metaKey)
 		return
 
-	if (event.altKey && event.key == 'a') {
+	if (event.altKey && event.key == 'Tab') {
+		if (bufferLast !== undefined)
+			bufferActivate(bufferLast)
+	} else if (event.altKey && event.key == 'a') {
 		for (const [name, b] of buffers)
 			if (name !== bufferCurrent && b.newMessages) {
-				rpc.send({command: 'BufferActivate', bufferName: name})
+				bufferActivate(name)
 				break
 			}
-		return event.preventDefault()
-	}
-
-	if (event.altKey && event.key == '!') {
+	} else if (event.altKey && event.key == '!') {
 		for (const [name, b] of buffers)
 			if (name !== bufferCurrent && b.highlighted) {
-				rpc.send({command: 'BufferActivate', bufferName: name})
+				bufferActivate(name)
 				break
 			}
-		return event.preventDefault()
-	}
+	} else
+		return
+
+	event.preventDefault()
 })
-- 
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