From edbe6843068918925f131f255ea81bac0a841ce8 Mon Sep 17 00:00:00 2001
From: Felix Angell <felixangell@members.fsf.org>
Date: Wed, 16 May 2018 21:52:17 +0100
Subject: [PATCH] undo and redo of text, closes #53

---
 cfg/config.go       |  3 ++-
 cfg/config_any.go   |  6 ++++++
 cfg/config_linux.go |  6 ++++++
 cfg/config_mac.go   |  6 ++++++
 gui/action.go       |  3 +++
 gui/shortcuts.go    | 18 ++++++++++++++++++
 6 files changed, 41 insertions(+), 1 deletion(-)

diff --git a/cfg/config.go b/cfg/config.go
index 2f29a12..463d04a 100644
--- a/cfg/config.go
+++ b/cfg/config.go
@@ -2,10 +2,11 @@ package cfg
 
 import (
 	"errors"
-	"github.com/felixangell/strife"
 	"log"
 	"regexp"
 	"strconv"
+
+	"github.com/felixangell/strife"
 )
 
 type TomlConfig struct {
diff --git a/cfg/config_any.go b/cfg/config_any.go
index 009fb47..54718ce 100644
--- a/cfg/config_any.go
+++ b/cfg/config_any.go
@@ -62,6 +62,12 @@ draw = true
 flash = true
 
 [commands]
+[commands.undo]
+shortcut = "ctrl+z"
+
+[commands.redo]
+shortcut = "ctrl+y"
+
 [commands.save]
 shortcut = "ctrl+s"
 
diff --git a/cfg/config_linux.go b/cfg/config_linux.go
index bf0d315..a364e75 100644
--- a/cfg/config_linux.go
+++ b/cfg/config_linux.go
@@ -62,6 +62,12 @@ draw = true
 flash = true
 
 [commands]
+[commands.undo]
+shortcut = "ctrl+z"
+
+[commands.redo]
+shortcut = "ctrl+y"
+
 [commands.exit]
 shortcut = "ctrl+q"
 
diff --git a/cfg/config_mac.go b/cfg/config_mac.go
index dac0020..f8f076d 100644
--- a/cfg/config_mac.go
+++ b/cfg/config_mac.go
@@ -62,6 +62,12 @@ draw = true
 flash = true
 
 [commands]
+[commands.undo]
+shortcut = "super+z"
+
+[commands.redo]
+shortcut = "super+y"
+
 [commands.exit]
 shortcut = "super+q"
 
diff --git a/gui/action.go b/gui/action.go
index e0ba03d..36191d5 100644
--- a/gui/action.go
+++ b/gui/action.go
@@ -126,6 +126,9 @@ var actions = map[string]BufferAction{
 	"page_down": NewBufferAction("page_down", pageDown),
 	"page_up":   NewBufferAction("page_up", pageUp),
 
+	"undo": NewBufferAction("undo", Undo),
+	"redo": NewBufferAction("redo", Redo),
+
 	"focus_left":  NewBufferAction("focus_left", focusLeft),
 	"focus_right": NewBufferAction("focus_right", focusRight),
 
diff --git a/gui/shortcuts.go b/gui/shortcuts.go
index 40d8408..d1f3075 100644
--- a/gui/shortcuts.go
+++ b/gui/shortcuts.go
@@ -37,6 +37,24 @@ func Paste(v *View, commands []string) bool {
 	return false
 }
 
+func Undo(v *View, commands []string) bool {
+	b := v.getCurrentBuff()
+	if b == nil {
+		return false
+	}
+	b.table.Undo()
+	return false
+}
+
+func Redo(v *View, commands []string) bool {
+	b := v.getCurrentBuff()
+	if b == nil {
+		return false
+	}
+	b.table.Redo()
+	return false
+}
+
 func genFileName(dir, prefix, suffix string) string {
 	randBytes := make([]byte, 16)
 	rand.Read(randBytes)