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// Copyright 2014 The gocui Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import (
"fmt"
"log"
"strings"
"github.com/jroimartin/gocui"
)
type Label struct {
name string
w, h int
body string
}
func NewLabel(name string, body string) *Label {
lines := strings.Split(body, "\n")
w := 0
for _, l := range lines {
if len(l) > w {
w = len(l)
}
}
h := len(lines) + 1
w = w + 1
return &Label{name: name, w: w, h: h, body: body}
}
func (w *Label) Layout(g *gocui.Gui) error {
v, err := g.SetView(w.name, 0, 0, w.w, w.h)
if err != nil {
if err != gocui.ErrUnknownView {
return err
}
fmt.Fprint(v, w.body)
}
return nil
}
func flowLayout(g *gocui.Gui) error {
views := g.Views()
x := 0
for _, v := range views {
w, h := v.Size()
_, err := g.SetView(v.Name(), x, 0, x+w+1, h+1)
if err != nil && err != gocui.ErrUnknownView {
return err
}
x += w + 2
}
return nil
}
func main() {
g, err := gocui.NewGui(gocui.OutputNormal)
if err != nil {
log.Panicln(err)
}
defer g.Close()
l1 := NewLabel("l1", "This")
l2 := NewLabel("l2", "is")
l3 := NewLabel("l3", "a")
l4 := NewLabel("l4", "flow\nlayout")
l5 := NewLabel("l5", "!")
fl := gocui.ManagerFunc(flowLayout)
g.SetManager(l1, l2, l3, l4, l5, fl)
if err := g.SetKeybinding("", gocui.KeyCtrlC, gocui.ModNone, quit); err != nil {
log.Panicln(err)
}
if err := g.MainLoop(); err != nil && err != gocui.ErrQuit {
log.Panicln(err)
}
}
func quit(g *gocui.Gui, v *gocui.View) error {
return gocui.ErrQuit
}
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