Merge branch 'column-width'

Fixes #33

README.md

@@ -23,8 +23,11 @@ Getting started
     {
         "slack_token": "yourslacktokenhere",
 
-        // add the following to use light theme, default is dark
-        "theme": "light"
+        // optional: add the following to use light theme, default is dark
+        "theme": "light",
+
+        // optional: set the width of the sidebar (between 1 and 11), default is 1
+        "sidebar_width": 3
     }
     ```
 

config/config.go

@@ -10,14 +10,18 @@ import (
 
 // Config is the definition of a Config struct
 type Config struct {
-	SlackToken string `json:"slack_token"`
-	Theme      string `json:"theme"`
+	SlackToken   string `json:"slack_token"`
+	Theme        string `json:"theme"`
+	SidebarWidth int    `json:"sidebar_width"`
+	MainWidth    int    `json:"-"`
 }
 
 // NewConfig loads the config file and returns a Config struct
 func NewConfig(filepath string) (*Config, error) {
 	cfg := Config{
-		Theme: "dark",
+		Theme:        "dark",
+		SidebarWidth: 1,
+		MainWidth:    11,
 	}
 
 	file, err := os.Open(filepath)
@@ -33,6 +37,12 @@ func NewConfig(filepath string) (*Config, error) {
 		return &cfg, errors.New("couldn't find 'slack_token' parameter")
 	}
 
+	if cfg.SidebarWidth < 1 || cfg.SidebarWidth > 11 {
+		return &cfg, errors.New("please specify the 'sidebar_width' between 1 and 11")
+	}
+
+	cfg.MainWidth = 12 - cfg.SidebarWidth
+
 	if cfg.Theme == "light" {
 		termui.ColorMap = map[string]termui.Attribute{
 			"fg":           termui.ColorBlack,

main.go

@@ -71,12 +71,12 @@ func main() {
 	// Setup body
 	termui.Body.AddRows(
 		termui.NewRow(
-			termui.NewCol(1, 0, ctx.View.Channels),
-			termui.NewCol(11, 0, ctx.View.Chat),
+			termui.NewCol(ctx.Config.SidebarWidth, 0, ctx.View.Channels),
+			termui.NewCol(ctx.Config.MainWidth, 0, ctx.View.Chat),
 		),
 		termui.NewRow(
-			termui.NewCol(1, 0, ctx.View.Mode),
-			termui.NewCol(11, 0, ctx.View.Input),
+			termui.NewCol(ctx.Config.SidebarWidth, 0, ctx.View.Mode),
+			termui.NewCol(ctx.Config.MainWidth, 0, ctx.View.Input),
 		),
 	)
 	termui.Body.Align()