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keybinding.go
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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
import "github.com/nsf/termbox-go"
type (
// Keys represent special keys or keys combinations.
Key termbox.Key
// Modifiers allow to define special keys combinations. They can be used
// in combination with Keys or Runes when a new keybinding is defined.
Modifier termbox.Modifier
// KeybindingHandlers represent the actions linked to keybindings. The
// handler is called when a key-press event satisfies a configured
// keybinding.
KeybindingHandler func(*Gui, *View) error
)
// Special keys.
const (
KeyF1 Key = Key(termbox.KeyF1)
KeyF2 = Key(termbox.KeyF2)
KeyF3 = Key(termbox.KeyF3)
KeyF4 = Key(termbox.KeyF4)
KeyF5 = Key(termbox.KeyF5)
KeyF6 = Key(termbox.KeyF6)
KeyF7 = Key(termbox.KeyF7)
KeyF8 = Key(termbox.KeyF8)
KeyF9 = Key(termbox.KeyF9)
KeyF10 = Key(termbox.KeyF10)
KeyF11 = Key(termbox.KeyF11)
KeyF12 = Key(termbox.KeyF12)
KeyInsert = Key(termbox.KeyInsert)
KeyDelete = Key(termbox.KeyDelete)
KeyHome = Key(termbox.KeyHome)
KeyEnd = Key(termbox.KeyEnd)
KeyPgup = Key(termbox.KeyPgup)
KeyPgdn = Key(termbox.KeyPgdn)
KeyArrowUp = Key(termbox.KeyArrowUp)
KeyArrowDown = Key(termbox.KeyArrowDown)
KeyArrowLeft = Key(termbox.KeyArrowLeft)
KeyArrowRight = Key(termbox.KeyArrowRight)
)
// Keys combinations.
const (
KeyCtrlTilde Key = Key(termbox.KeyCtrlTilde)
KeyCtrl2 = Key(termbox.KeyCtrl2)
KeyCtrlSpace = Key(termbox.KeyCtrlSpace)
KeyCtrlA = Key(termbox.KeyCtrlA)
KeyCtrlB = Key(termbox.KeyCtrlB)
KeyCtrlC = Key(termbox.KeyCtrlC)
KeyCtrlD = Key(termbox.KeyCtrlD)
KeyCtrlE = Key(termbox.KeyCtrlE)
KeyCtrlF = Key(termbox.KeyCtrlF)
KeyCtrlG = Key(termbox.KeyCtrlG)
KeyBackspace = Key(termbox.KeyBackspace)
KeyCtrlH = Key(termbox.KeyCtrlH)
KeyTab = Key(termbox.KeyTab)
KeyCtrlI = Key(termbox.KeyCtrlI)
KeyCtrlJ = Key(termbox.KeyCtrlJ)
KeyCtrlK = Key(termbox.KeyCtrlK)
KeyCtrlL = Key(termbox.KeyCtrlL)
KeyEnter = Key(termbox.KeyEnter)
KeyCtrlM = Key(termbox.KeyCtrlM)
KeyCtrlN = Key(termbox.KeyCtrlN)
KeyCtrlO = Key(termbox.KeyCtrlO)
KeyCtrlP = Key(termbox.KeyCtrlP)
KeyCtrlQ = Key(termbox.KeyCtrlQ)
KeyCtrlR = Key(termbox.KeyCtrlR)
KeyCtrlS = Key(termbox.KeyCtrlS)
KeyCtrlT = Key(termbox.KeyCtrlT)
KeyCtrlU = Key(termbox.KeyCtrlU)
KeyCtrlV = Key(termbox.KeyCtrlV)
KeyCtrlW = Key(termbox.KeyCtrlW)
KeyCtrlX = Key(termbox.KeyCtrlX)
KeyCtrlY = Key(termbox.KeyCtrlY)
KeyCtrlZ = Key(termbox.KeyCtrlZ)
KeyEsc = Key(termbox.KeyEsc)
KeyCtrlLsqBracket = Key(termbox.KeyCtrlLsqBracket)
KeyCtrl3 = Key(termbox.KeyCtrl3)
KeyCtrl4 = Key(termbox.KeyCtrl4)
KeyCtrlBackslash = Key(termbox.KeyCtrlBackslash)
KeyCtrl5 = Key(termbox.KeyCtrl5)
KeyCtrlRsqBracket = Key(termbox.KeyCtrlRsqBracket)
KeyCtrl6 = Key(termbox.KeyCtrl6)
KeyCtrl7 = Key(termbox.KeyCtrl7)
KeyCtrlSlash = Key(termbox.KeyCtrlSlash)
KeyCtrlUnderscore = Key(termbox.KeyCtrlUnderscore)
KeySpace = Key(termbox.KeySpace)
KeyBackspace2 = Key(termbox.KeyBackspace2)
KeyCtrl8 = Key(termbox.KeyCtrl8)
)
// Modifiers.
const (
ModAlt Modifier = Modifier(termbox.ModAlt)
)
// Keybidings are used to link a given key-press event with an action.
type keybinding struct {
viewName string
key Key
ch rune
mod Modifier
h KeybindingHandler
}
// newKeybinding returns a new Keybinding object.
func newKeybinding(viewname string, key Key, ch rune, mod Modifier, h KeybindingHandler) (kb *keybinding) {
kb = &keybinding{
viewName: viewname,
key: key,
ch: ch,
mod: mod,
h: h,
}
return kb
}