ref: cb083ed612f90d648a7a5c27b8e155beef6c7bfb
dir: /browser/history/history.go/
package history
import (
"net/url"
"strings"
)
type History struct {
items []Item
}
func (h History) URL() *url.URL {
return h.items[len(h.items)-1].URL
}
func (h *History) Push(u *url.URL, oldScroll int) {
if len(h.items) > 0 {
if h.items[len(h.items)-1].URL.String() == u.String() {
return
}
h.setScroll(oldScroll)
}
it := Item{u, 0}
h.items = append(h.items, it)
}
func (h *History) Back() {
if len(h.items) > 1 {
h.items = h.items[:len(h.items)-1]
}
}
func (h *History) String() string {
addrs := make([]string, len(h.items))
for i, it := range h.items {
addrs[i] = it.URL.String()
}
return strings.Join(addrs, ", ")
}
func (h *History) Scroll() int {
return h.items[len(h.items)-1].Scroll
}
func (h *History) setScroll(s int) {
h.items[len(h.items)-1].Scroll = s
}
type Item struct {
*url.URL
Scroll int
}