Start with creating Chat window

src/components/chat.go

@@ -1,3 +1,124 @@
 package components
 
-type Chat struct{}
+import (
+	"strings"
+
+	"github.com/gizak/termui"
+)
+
+type Chat struct {
+	List *termui.List
+}
+
+func CreateChat(inputHeight int) *Chat {
+	chat := &Chat{
+		List: termui.NewList(),
+	}
+
+	chat.List.Height = termui.TermHeight() - inputHeight
+	chat.List.Overflow = "wrap"
+	chat.LoadMessages()
+
+	return chat
+}
+
+// Buffer implements interface termui.Bufferer
+func (c *Chat) Buffer() termui.Buffer {
+	// Build cells, after every item put a newline
+	cells := termui.DefaultTxBuilder.Build(
+		strings.Join(c.List.Items, "\n"),
+		c.List.ItemFgColor, c.List.ItemBgColor,
+	)
+
+	type Line struct {
+		cells []termui.Cell
+	}
+
+	// Uncover how many lines there are in total for all items
+	lines := []Line{}
+	line := Line{}
+
+	x := 0
+	for _, cell := range cells {
+
+		if cell.Ch == '\n' {
+			lines = append(lines, line)
+			line = Line{}
+			x = 0
+			continue
+		}
+
+		if x+cell.Width() > c.List.InnerBounds().Dx() {
+			lines = append(lines, line)
+			line = Line{}
+			x = 0
+		}
+
+		line.cells = append(line.cells, cell)
+		x++
+	}
+
+	// We will print lines bottom up
+	buf := c.List.Buffer()
+	linesHeight := len(lines)
+
+	windowMinY := c.List.InnerBounds().Min.Y
+	windowMaxY := c.List.InnerBounds().Max.Y
+
+	currentY := windowMaxY - 1
+	for i := linesHeight - 1; i >= 0; i-- {
+		if currentY <= windowMinY {
+			break
+		}
+
+		x := c.List.InnerBounds().Min.X
+		for _, cell := range lines[i].cells {
+			buf.Set(x, currentY, cell)
+			x += cell.Width()
+		}
+
+		currentY--
+	}
+
+	return buf
+}
+
+// GetHeight implements interface termui.GridBufferer
+func (c *Chat) GetHeight() int {
+	return c.List.Block.GetHeight()
+}
+
+// SetWidth implements interface termui.GridBufferer
+func (c *Chat) SetWidth(w int) {
+	c.List.SetWidth(w)
+}
+
+// SetX implements interface termui.GridBufferer
+func (c *Chat) SetX(x int) {
+	c.List.SetX(x)
+}
+
+// SetY implements interface termui.GridBufferer
+func (c *Chat) SetY(y int) {
+	c.List.SetY(y)
+}
+
+func (c *Chat) LoadMessages() {
+	messages := []string{
+		"[jp] hello world",
+		"[erroneousboat] foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar foo bar",
+	}
+
+	for _, message := range messages {
+		c.AddMessages(message)
+	}
+}
+
+func (c *Chat) AddMessages(message string) {
+	c.List.Items = append(c.List.Items, message)
+}
+
+func (c *Chat) ScrollUp() {
+}
+
+func (c *Chat) ScrollDown() {}

src/components/input.go

@@ -61,8 +61,10 @@ func (i *Input) SetY(y int) {
 
 // Insert will insert a given key at the place of the current CursorPosition
 func (i *Input) Insert(key string) {
-	i.Par.Text = i.Par.Text[0:i.CursorPosition] + key + i.Par.Text[i.CursorPosition:len(i.Par.Text)]
-	i.MoveCursorRight()
+	if len(i.Par.Text) < i.Par.InnerBounds().Dx()-1 {
+		i.Par.Text = i.Par.Text[0:i.CursorPosition] + key + i.Par.Text[i.CursorPosition:len(i.Par.Text)]
+		i.MoveCursorRight()
+	}
 }
 
 // Remove will remove a character at the place of the current CursorPosition

src/handlers/event.go

@@ -91,7 +91,7 @@ func actionMoveCursorLeft(view *views.View) {
 func actionSend(ctx *context.AppContext) {
 	if !ctx.View.Input.IsEmpty() {
 		// FIXME
-		ctx.View.Chat.Items = append(ctx.View.Chat.Items, ctx.View.Input.Text())
+		ctx.View.Chat.List.Items = append(ctx.View.Chat.List.Items, ctx.View.Input.Text())
 		ctx.View.Input.Clear()
 		ctx.View.Refresh()
 	}

src/views/chat.go

@@ -8,7 +8,7 @@ import (
 
 type View struct {
 	Input    *components.Input
-	Chat     *termui.List
+	Chat     *components.Chat
 	Channels *termui.List
 	Mode     *termui.Par
 }
@@ -16,7 +16,7 @@ type View struct {
 func CreateChatView() *View {
 	input := components.CreateInput()
 	channels := components.CreateChannelsComponent(input.Par.Height)
-	chat := components.CreateChatComponent(input.Par.Height)
+	chat := components.CreateChat(input.Par.Height)
 	mode := components.CreateModeComponent()
 
 	view := &View{