ref: 2943c008d441d85701adc3e7c17b3b2ade061711
dir: /nodes/experimental.go/
package nodes
import (
"fmt"
"github.com/andybalholm/cascadia"
"github.com/psilva261/opossum"
"golang.org/x/net/html"
)
// Path relative to body
func (n *Node) Path() (p string, ok bool) {
p, ok = n.path()
if ok {
p = opossum.PathPrefix + p
}
return
}
func (n *Node) path() (p string, ok bool) {
var i int
var c *Node
if n.DomSubtree == nil || n.Type() != html.ElementNode {
return
}
if n.parent == nil {
return "/", true
}
for i, c = range n.parent.Children {
if c == n {
break
}
if c.Type() == html.ElementNode {
i++
}
}
p += fmt.Sprintf("/%v", i)
q, ok := n.parent.path()
if ok {
p = q + p
}
return p, true
}
func (n *Node) Query(s string) (ns []*Node, err error) {
cs, err := cascadia.Compile(s)
if err != nil {
return nil, fmt.Errorf("cssSel compile %v: %w", s, err)
}
var m func(doc *html.Node, nn *Node) *Node
m = func(doc *html.Node, nn *Node) *Node {
if nn.DomSubtree == doc {
return nn
}
for _, c := range nn.Children {
if res := m(doc, c); res != nil {
return res
}
}
return nil
}
if n == nil {
return nil, fmt.Errorf("nil node tree")
}
for _, el := range cascadia.QueryAll(n.DomSubtree, cs) {
if res := m(el, n); res != nil {
ns = append(ns, res)
}
}
return
}
func (n *Node) NumVClusters() (m int) {
if n.IsFlex() {
if n.IsFlexDirectionRow() {
return 1
} else {
return len(n.Children)
}
} else {
for i, c := range n.Children {
if i == 0 || !c.IsInline() {
m++
}
}
}
return
}
func (n *Node) VSlice(i, j int) (s []*Node) {
s = make([]*Node, 0, j-i)
m := 0
for l, c := range n.Children {
if l == 0 || !c.IsInline() {
m++
}
if i <= l && l <= j {
s = append(s, c)
}
}
return
}
type Fan struct {
from []int
to []int
}
func (f Fan) Slice(root *Node) *Node {
return nil
}
/*func FanSlice(root *Node, depth, k, i, j int) *Node {
newRoot := *root
if depth == 0 {
} else {
for i, c := range root.Children {
newRoot.Children[i] =
}
}
}*/