| // 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" |
| |
| "github.com/jroimartin/gocui" |
| ) |
| |
| func main() { |
| g := gocui.NewGui() |
| if err := g.Init(); err != nil { |
| log.Panicln(err) |
| } |
| defer g.Close() |
| |
| g.SetLayout(layout) |
| if err := keybindings(g); err != nil { |
| log.Panicln(err) |
| } |
| g.SelBgColor = gocui.ColorGreen |
| g.SelFgColor = gocui.ColorBlack |
| g.Cursor = true |
| g.Mouse = true |
| |
| if err := g.MainLoop(); err != nil && err != gocui.ErrQuit { |
| log.Panicln(err) |
| } |
| } |
| |
| func layout(g *gocui.Gui) error { |
| if v, err := g.SetView("but1", 2, 2, 22, 7); err != nil { |
| if err != gocui.ErrUnknownView { |
| return err |
| } |
| v.Highlight = true |
| fmt.Fprintln(v, "Button 1 - line 1") |
| fmt.Fprintln(v, "Button 1 - line 2") |
| fmt.Fprintln(v, "Button 1 - line 3") |
| fmt.Fprintln(v, "Button 1 - line 4") |
| } |
| if v, err := g.SetView("but2", 24, 2, 44, 4); err != nil { |
| if err != gocui.ErrUnknownView { |
| return err |
| } |
| v.Highlight = true |
| fmt.Fprintln(v, "Button 2 - line 1") |
| } |
| return nil |
| } |
| |
| func keybindings(g *gocui.Gui) error { |
| if err := g.SetKeybinding("", gocui.KeyCtrlC, gocui.ModNone, quit); err != nil { |
| return err |
| } |
| for _, n := range []string{"but1", "but2"} { |
| if err := g.SetKeybinding(n, gocui.MouseLeft, gocui.ModNone, showMsg); err != nil { |
| return err |
| } |
| } |
| if err := g.SetKeybinding("msg", gocui.MouseLeft, gocui.ModNone, delMsg); err != nil { |
| return err |
| } |
| return nil |
| } |
| |
| func quit(g *gocui.Gui, v *gocui.View) error { |
| return gocui.ErrQuit |
| } |
| |
| func showMsg(g *gocui.Gui, v *gocui.View) error { |
| var l string |
| var err error |
| |
| if err := g.SetCurrentView(v.Name()); err != nil { |
| return err |
| } |
| |
| _, cy := v.Cursor() |
| if l, err = v.Line(cy); err != nil { |
| l = "" |
| } |
| |
| maxX, maxY := g.Size() |
| if v, err := g.SetView("msg", maxX/2-10, maxY/2, maxX/2+10, maxY/2+2); err != nil { |
| if err != gocui.ErrUnknownView { |
| return err |
| } |
| fmt.Fprintln(v, l) |
| } |
| return nil |
| } |
| |
| func delMsg(g *gocui.Gui, v *gocui.View) error { |
| if err := g.DeleteView("msg"); err != nil { |
| return err |
| } |
| return nil |
| } |