You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
|
|
package goquery
import ( "golang.org/x/net/html" )
// First reduces the set of matched elements to the first in the set.
// It returns a new Selection object, and an empty Selection object if the
// the selection is empty.
func (s *Selection) First() *Selection { return s.Eq(0) }
// Last reduces the set of matched elements to the last in the set.
// It returns a new Selection object, and an empty Selection object if
// the selection is empty.
func (s *Selection) Last() *Selection { return s.Eq(-1) }
// Eq reduces the set of matched elements to the one at the specified index.
// If a negative index is given, it counts backwards starting at the end of the
// set. It returns a new Selection object, and an empty Selection object if the
// index is invalid.
func (s *Selection) Eq(index int) *Selection { if index < 0 { index += len(s.Nodes) }
if index >= len(s.Nodes) || index < 0 { return newEmptySelection(s.document) }
return s.Slice(index, index+1) }
// Slice reduces the set of matched elements to a subset specified by a range
// of indices.
func (s *Selection) Slice(start, end int) *Selection { if start < 0 { start += len(s.Nodes) } if end < 0 { end += len(s.Nodes) } return pushStack(s, s.Nodes[start:end]) }
// Get retrieves the underlying node at the specified index.
// Get without parameter is not implemented, since the node array is available
// on the Selection object.
func (s *Selection) Get(index int) *html.Node { if index < 0 { index += len(s.Nodes) // Negative index gets from the end
} return s.Nodes[index] }
// Index returns the position of the first element within the Selection object
// relative to its sibling elements.
func (s *Selection) Index() int { if len(s.Nodes) > 0 { return newSingleSelection(s.Nodes[0], s.document).PrevAll().Length() } return -1 }
// IndexSelector returns the position of the first element within the
// Selection object relative to the elements matched by the selector, or -1 if
// not found.
func (s *Selection) IndexSelector(selector string) int { if len(s.Nodes) > 0 { sel := s.document.Find(selector) return indexInSlice(sel.Nodes, s.Nodes[0]) } return -1 }
// IndexMatcher returns the position of the first element within the
// Selection object relative to the elements matched by the matcher, or -1 if
// not found.
func (s *Selection) IndexMatcher(m Matcher) int { if len(s.Nodes) > 0 { sel := s.document.FindMatcher(m) return indexInSlice(sel.Nodes, s.Nodes[0]) } return -1 }
// IndexOfNode returns the position of the specified node within the Selection
// object, or -1 if not found.
func (s *Selection) IndexOfNode(node *html.Node) int { return indexInSlice(s.Nodes, node) }
// IndexOfSelection returns the position of the first node in the specified
// Selection object within this Selection object, or -1 if not found.
func (s *Selection) IndexOfSelection(sel *Selection) int { if sel != nil && len(sel.Nodes) > 0 { return indexInSlice(s.Nodes, sel.Nodes[0]) } return -1 }
|