121 lines
2.5 KiB
Go
121 lines
2.5 KiB
Go
// Copyright 2014 The gocui Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import (
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"errors"
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"fmt"
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"log"
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"github.com/awesome-gocui/gocui"
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)
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var (
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viewArr = []string{"v1", "v2", "v3", "v4"}
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active = 0
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)
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func setCurrentViewOnTop(g *gocui.Gui, name string) (*gocui.View, error) {
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if _, err := g.SetCurrentView(name); err != nil {
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return nil, err
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}
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return g.SetViewOnTop(name)
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}
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func nextView(g *gocui.Gui, v *gocui.View) error {
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nextIndex := (active + 1) % len(viewArr)
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name := viewArr[nextIndex]
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out, err := g.View("v2")
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if err != nil {
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return err
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}
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fmt.Fprintln(out, "Going from view "+v.Name()+" to "+name)
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if _, err := setCurrentViewOnTop(g, name); err != nil {
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return err
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}
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if nextIndex == 0 || nextIndex == 3 {
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g.Cursor = true
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} else {
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g.Cursor = false
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}
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active = nextIndex
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return nil
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}
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func layout(g *gocui.Gui) error {
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maxX, maxY := g.Size()
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if v, err := g.SetView("v1", 0, 0, maxX/2-1, maxY/2-1, 0); err != nil {
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if !errors.Is(err, gocui.ErrUnknownView) {
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return err
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}
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v.Title = "v1 (editable)"
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v.Editable = true
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v.Wrap = true
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if _, err = setCurrentViewOnTop(g, "v1"); err != nil {
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return err
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}
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}
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if v, err := g.SetView("v2", maxX/2-1, 0, maxX-1, maxY/2-1, 0); err != nil {
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if !errors.Is(err, gocui.ErrUnknownView) {
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return err
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}
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v.Title = "v2"
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v.Wrap = true
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v.Autoscroll = true
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}
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if v, err := g.SetView("v3", 0, maxY/2-1, maxX/2-1, maxY-1, 0); err != nil {
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if !errors.Is(err, gocui.ErrUnknownView) {
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return err
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}
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v.Title = "v3"
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v.Wrap = true
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v.Autoscroll = true
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fmt.Fprint(v, "Press TAB to change current view")
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}
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if v, err := g.SetView("v4", maxX/2, maxY/2, maxX-1, maxY-1, 0); err != nil {
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if !errors.Is(err, gocui.ErrUnknownView) {
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return err
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}
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v.Title = "v4 (editable)"
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v.Editable = true
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}
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return nil
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}
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func quit(g *gocui.Gui, v *gocui.View) error {
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return gocui.ErrQuit
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}
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func main() {
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g, err := gocui.NewGui(gocui.OutputNormal, true)
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if err != nil {
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log.Panicln(err)
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}
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defer g.Close()
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g.Highlight = true
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g.Cursor = true
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g.SelFgColor = gocui.ColorGreen
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g.SetManagerFunc(layout)
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if err := g.SetKeybinding("", gocui.KeyCtrlC, gocui.ModNone, quit); err != nil {
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log.Panicln(err)
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}
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if err := g.SetKeybinding("", gocui.KeyTab, gocui.ModNone, nextView); err != nil {
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log.Panicln(err)
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}
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if err := g.MainLoop(); err != nil && !errors.Is(err, gocui.ErrQuit) {
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log.Panicln(err)
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}
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}
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