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rowmanager.go
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/
rowmanager.go
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package main
import (
"deedles.dev/trayscale/internal/xslices"
"github.com/diamondburned/gotk4/pkg/gtk/v4"
"golang.org/x/exp/slices"
)
type rowManager[Data any] struct {
Parent rowManagerParent
New func(Data) row[Data]
rows []row[Data]
}
func (m *rowManager[Data]) resize(size int) {
if size >= cap(m.rows) {
m.rows = slices.Grow(m.rows, size-cap(m.rows))
return
}
if size < len(m.rows) {
for _, r := range m.rows[size:] {
m.Parent.Remove(r.Widget())
}
xslices.Clear(m.rows[size:])
m.rows = m.rows[:size]
}
}
func (m *rowManager[Data]) Update(data []Data) {
m.resize(len(data))
for i, d := range data {
if i < len(m.rows) {
m.rows[i].Update(d)
continue
}
row := m.New(d)
m.Parent.Add(row.Widget())
m.rows = append(m.rows, row)
}
}
type rowManagerParent interface {
Add(gtk.Widgetter)
Remove(gtk.Widgetter)
}
type rowAdder interface {
AddRow(gtk.Widgetter)
Remove(gtk.Widgetter)
}
type rowAdderParent struct {
rowAdder
}
func (r rowAdderParent) Add(w gtk.Widgetter) {
r.AddRow(w)
}
type row[Data any] interface {
Update(Data)
Widget() gtk.Widgetter
}
type simpleRow[Data any] struct {
W gtk.Widgetter
U func(Data)
}
func (row *simpleRow[Data]) Update(data Data) {
row.U(data)
}
func (row *simpleRow[Data]) Widget() gtk.Widgetter {
return row.W
}