rat

type Annotation interface {
	Start() int
	End() int
	Class() string
	Val() string
}

type Annotations interface {
	Add(Annotation)
	Intersecting(Region) []Annotation
	Len() int
}

type Annotator interface {
	Annotate(io.Reader) <-chan Annotation
}

type Box interface {
	Left() int
	Top() int
	Width() int
	Height() int
	DrawStyledRune(x, y int, sr StyledRune)
	DrawStyledRunes(x, y int, runes []StyledRune)
	Fill(sr StyledRune)
}

type Buffer interface {
	sync.Locker
	AnnotateWith(Annotator)
	AnnotationsForLine(line int) []Annotation
	NumAnnotations() int
	NumLines() int
	StyledLines(start int, numLines int) [][]StyledRune
	io.Closer
}

type Configurer interface {
	Process(rd io.Reader)
}

type ConfirmPrompt interface {
	Widget
	Confirm(message string, callback func())
	Clear()
}

type Context map[string]string

type EventHandler interface {
	Supports(Context) bool
	Call(Context)
	Specificity() int
}

type HandlerRegistry interface {
	Add([]keyEvent, EventHandler)
	Find([]keyEvent) EventHandler
	FindCtx([]keyEvent, Context) EventHandler
}

type Highlight interface {
	TermStyle
}

type Highlights interface {
	Start(int, TermStyle)
	End(int)
	AtPoint(int) Highlight
	Len() int
}

type KeyConst termbox.Key

type Line interface {
	Start() int
	End() int
	SetEnd(int)
}

type Mode interface {
	RegisterAnnotator(func(Context) Annotator)
	RegisterEventHandler(func(Context) func(Pager))
	InitAnnotators(Context) func() []Annotator
	AddEventHandlers(Context) func(Pager)
}

type Pager interface {
	Widget
	AddEventHandler(keyStr string, handler EventHandler)
	Reload()
	CursorUp()
	CursorDown()
	CursorFirstLine()
	CursorLastLine()
	ScrollUp()
	ScrollDown()
	PageUp()
	PageDown()
}

type PagerStack interface {
	Widget
	Show(int)
	Last() Pager
	Push(p Pager)
	Pop()
	Size() int
	AddChild(parent Pager, child Pager, creatingKeys string)
	PushAsChild(Pager, string)
	ParentCursorUp()
	ParentCursorDown()
}

type Region interface {
	Start() int
	End() int
}

type ShellCommand interface {
	io.ReadCloser
}

type Stream interface {
	io.WriteCloser
	Bytes() []byte
	NewReader() StreamReader
}

type StreamReader interface {
	io.Reader
}

type StyledRune interface {
	Rune() rune
	TermStyle
}

type TermStyle interface {
	Fg() termbox.Attribute
	Bg() termbox.Attribute
}

type TermStyles interface {
	Get(termbox.Attribute, termbox.Attribute) TermStyle
	Default() TermStyle
}

type Token interface {
	Type() TokenType
	Val() []byte
	TermStyle() TermStyle
}

type TokenReader interface {
	ReadToken() (Token, error)
}

type TokenType uint8

type Widget interface {
	SetBox(Box)
	GetBox() Box
	Render()
	HandleEvent([]keyEvent) bool
	Destroy()
}

type WidgetStack interface {
	Widget
	Push(w Widget)
	Pop() Widget
	Size() int
}