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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 gocui allows to create console user interfaces.
-
-Create a new GUI:
-
- g, err := gocui.NewGui(gocui.OutputNormal)
- if err != nil {
- // handle error
- }
- defer g.Close()
-
- // Set GUI managers and key bindings
- // ...
-
- if err := g.MainLoop(); err != nil && err != gocui.ErrQuit {
- // handle error
- }
-
-Set GUI managers:
-
- g.SetManager(mgr1, mgr2)
-
-Managers are in charge of GUI's layout and can be used to build widgets. On
-each iteration of the GUI's main loop, the Layout function of each configured
-manager is executed. Managers are used to set-up and update the application's
-main views, being possible to freely change them during execution. Also, it is
-important to mention that a main loop iteration is executed on each reported
-event (key-press, mouse event, window resize, etc).
-
-GUIs are composed by Views, you can think of it as buffers. Views implement the
-io.ReadWriter interface, so you can just write to them if you want to modify
-their content. The same is valid for reading.
-
-Create and initialize a view with absolute coordinates:
-
- if v, err := g.SetView("viewname", 2, 2, 22, 7); err != nil {
- if err != gocui.ErrUnknownView {
- // handle error
- }
- fmt.Fprintln(v, "This is a new view")
- // ...
- }
-
-Views can also be created using relative coordinates:
-
- maxX, maxY := g.Size()
- if v, err := g.SetView("viewname", maxX/2-30, maxY/2, maxX/2+30, maxY/2+2); err != nil {
- // ...
- }
-
-Configure keybindings:
-
- if err := g.SetKeybinding("viewname", gocui.KeyEnter, gocui.ModNone, fcn); err != nil {
- // handle error
- }
-
-gocui implements full mouse support that can be enabled with:
-
- g.Mouse = true
-
-Mouse events are handled like any other keybinding:
-
- if err := g.SetKeybinding("viewname", gocui.MouseLeft, gocui.ModNone, fcn); err != nil {
- // handle error
- }
-
-IMPORTANT: Views can only be created, destroyed or updated in three ways: from
-the Layout function within managers, from keybinding callbacks or via
-*Gui.Update(). The reason for this is that it allows gocui to be
-concurrent-safe. So, if you want to update your GUI from a goroutine, you must
-use *Gui.Update(). For example:
-
- g.Update(func(g *gocui.Gui) error {
- v, err := g.View("viewname")
- if err != nil {
- // handle error
- }
- v.Clear()
- fmt.Fprintln(v, "Writing from different goroutines")
- return nil
- })
-
-By default, gocui provides a basic edition mode. This mode can be extended
-and customized creating a new Editor and assigning it to *View.Editor:
-
- type Editor interface {
- Edit(v *View, key Key, ch rune, mod Modifier)
- }
-
-DefaultEditor can be taken as example to create your own custom Editor:
-
- var DefaultEditor Editor = EditorFunc(simpleEditor)
-
- func simpleEditor(v *View, key Key, ch rune, mod Modifier) {
- switch {
- case ch != 0 && mod == 0:
- v.EditWrite(ch)
- case key == KeySpace:
- v.EditWrite(' ')
- case key == KeyBackspace || key == KeyBackspace2:
- v.EditDelete(true)
- // ...
- }
- }
-
-Colored text:
-
-Views allow to add colored text using ANSI colors. For example:
-
- fmt.Fprintln(v, "\x1b[0;31mHello world")
-
-For more information, see the examples in folder "_examples/".
-*/
-package gocui