forked from ericfreese/rat
/
mode.go
50 lines (39 loc) · 1.16 KB
/
mode.go
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package rat
type Mode interface {
RegisterAnnotator(func(Context) Annotator)
RegisterEventHandler(func(Context) func(Pager))
InitAnnotators(Context) func() []Annotator
AddEventHandlers(Context) func(Pager)
}
type mode struct {
annotatorCtors []func(Context) Annotator
eventHandlerAdders []func(Context) func(Pager)
}
func NewMode() Mode {
m := &mode{}
m.annotatorCtors = make([]func(Context) Annotator, 0, 8)
m.eventHandlerAdders = make([]func(Context) func(Pager), 0, 8)
return m
}
func (m *mode) InitAnnotators(ctx Context) func() []Annotator {
return func() []Annotator {
annotators := make([]Annotator, 0, len(m.annotatorCtors))
for _, ctor := range m.annotatorCtors {
annotators = append(annotators, ctor(ctx))
}
return annotators
}
}
func (m *mode) AddEventHandlers(ctx Context) func(Pager) {
return func(p Pager) {
for _, adder := range m.eventHandlerAdders {
adder(ctx)(p)
}
}
}
func (m *mode) RegisterAnnotator(ctor func(Context) Annotator) {
m.annotatorCtors = append(m.annotatorCtors, ctor)
}
func (m *mode) RegisterEventHandler(adder func(Context) func(Pager)) {
m.eventHandlerAdders = append(m.eventHandlerAdders, adder)
}