ref: d6ed17c60fd13c933347110c720afa09e04df1c8
dir: /hugolib/page__menus.go/
// Copyright 2019 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package hugolib
import (
"sync"
"github.com/gohugoio/hugo/navigation"
)
type pageMenus struct {
p *pageState
q navigation.MenuQueryProvider
pmInit sync.Once
pm navigation.PageMenus
}
func (p *pageMenus) HasMenuCurrent(menuID string, me *navigation.MenuEntry) bool {
p.p.s.init.menus.Do()
p.init()
return p.q.HasMenuCurrent(menuID, me)
}
func (p *pageMenus) IsMenuCurrent(menuID string, inme *navigation.MenuEntry) bool {
p.p.s.init.menus.Do()
p.init()
return p.q.IsMenuCurrent(menuID, inme)
}
func (p *pageMenus) Menus() navigation.PageMenus {
// There is a reverse dependency here. initMenus will, once, build the
// site menus and update any relevant page.
p.p.s.init.menus.Do()
return p.menus()
}
func (p *pageMenus) menus() navigation.PageMenus {
p.init()
return p.pm
}
func (p *pageMenus) init() {
p.pmInit.Do(func() {
p.q = navigation.NewMenuQueryProvider(
p.p.s.Info.sectionPagesMenu,
p,
p.p.s,
p.p,
)
var err error
p.pm, err = navigation.PageMenusFromPage(p.p)
if err != nil {
p.p.s.Log.ERROR.Println(p.p.wrapError(err))
}
})
}