github.com/linchen2chris/hugo@v0.0.0-20230307053224-cec209389705/hugolib/page__menus.go (about) 1 // Copyright 2019 The Hugo Authors. All rights reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // http://www.apache.org/licenses/LICENSE-2.0 7 // 8 // Unless required by applicable law or agreed to in writing, software 9 // distributed under the License is distributed on an "AS IS" BASIS, 10 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 11 // See the License for the specific language governing permissions and 12 // limitations under the License. 13 14 package hugolib 15 16 import ( 17 "context" 18 "sync" 19 20 "github.com/gohugoio/hugo/navigation" 21 ) 22 23 type pageMenus struct { 24 p *pageState 25 26 q navigation.MenuQueryProvider 27 28 pmInit sync.Once 29 pm navigation.PageMenus 30 } 31 32 func (p *pageMenus) HasMenuCurrent(menuID string, me *navigation.MenuEntry) bool { 33 p.p.s.init.menus.Do(context.Background()) 34 p.init() 35 return p.q.HasMenuCurrent(menuID, me) 36 } 37 38 func (p *pageMenus) IsMenuCurrent(menuID string, inme *navigation.MenuEntry) bool { 39 p.p.s.init.menus.Do(context.Background()) 40 p.init() 41 return p.q.IsMenuCurrent(menuID, inme) 42 } 43 44 func (p *pageMenus) Menus() navigation.PageMenus { 45 // There is a reverse dependency here. initMenus will, once, build the 46 // site menus and update any relevant page. 47 p.p.s.init.menus.Do(context.Background()) 48 49 return p.menus() 50 } 51 52 func (p *pageMenus) menus() navigation.PageMenus { 53 p.init() 54 return p.pm 55 } 56 57 func (p *pageMenus) init() { 58 p.pmInit.Do(func() { 59 p.q = navigation.NewMenuQueryProvider( 60 p, 61 p.p.s, 62 p.p, 63 ) 64 65 var err error 66 p.pm, err = navigation.PageMenusFromPage(p.p) 67 if err != nil { 68 p.p.s.Log.Errorln(p.p.wrapError(err)) 69 } 70 }) 71 }