hugo/hugolib/page__tree.go
Bjørn Erik Pedersen 597e418cb0
Make Page an interface
The main motivation of this commit is to add a `page.Page` interface to replace the very file-oriented `hugolib.Page` struct.
This is all a preparation step for issue  #5074, "pages from other data sources".

But this also fixes a set of annoying limitations, especially related to custom output formats, and shortcodes.

Most notable changes:

* The inner content of shortcodes using the `{{%` as the outer-most delimiter will now be sent to the content renderer, e.g. Blackfriday.
  This means that any markdown will partake in the global ToC and footnote context etc.
* The Custom Output formats are now "fully virtualized". This removes many of the current limitations.
* The taxonomy list type now has a reference to the `Page` object.
  This improves the taxonomy template `.Title` situation and make common template constructs much simpler.

See #5074
Fixes #5763
Fixes #5758
Fixes #5090
Fixes #5204
Fixes #4695
Fixes #5607
Fixes #5707
Fixes #5719
Fixes #3113
Fixes #5706
Fixes #5767
Fixes #5723
Fixes #5769
Fixes #5770
Fixes #5771
Fixes #5759
Fixes #5776
Fixes #5777
Fixes #5778
2019-03-23 18:51:22 +01:00

113 lines
2.5 KiB
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 (
"github.com/gohugoio/hugo/common/types"
"github.com/gohugoio/hugo/helpers"
"github.com/gohugoio/hugo/resources/page"
)
type pageTree struct {
p *pageState
}
func (pt pageTree) IsAncestor(other interface{}) (bool, error) {
if pt.p == nil {
return false, nil
}
pp, err := unwrapPage(other)
if err != nil || pp == nil {
return false, err
}
if pt.p.Kind() == page.KindPage && len(pt.p.SectionsEntries()) == len(pp.SectionsEntries()) {
// A regular page is never its section's ancestor.
return false, nil
}
return helpers.HasStringsPrefix(pp.SectionsEntries(), pt.p.SectionsEntries()), nil
}
func (pt pageTree) CurrentSection() page.Page {
p := pt.p
if p.IsHome() || p.IsSection() {
return p
}
return p.Parent()
}
func (pt pageTree) IsDescendant(other interface{}) (bool, error) {
if pt.p == nil {
return false, nil
}
pp, err := unwrapPage(other)
if err != nil || pp == nil {
return false, err
}
if pp.Kind() == page.KindPage && len(pt.p.SectionsEntries()) == len(pp.SectionsEntries()) {
// A regular page is never its section's descendant.
return false, nil
}
return helpers.HasStringsPrefix(pt.p.SectionsEntries(), pp.SectionsEntries()), nil
}
func (pt pageTree) FirstSection() page.Page {
p := pt.p
parent := p.Parent()
if types.IsNil(parent) || parent.IsHome() {
return p
}
for {
current := parent
parent = parent.Parent()
if types.IsNil(parent) || parent.IsHome() {
return current
}
}
}
func (pt pageTree) InSection(other interface{}) (bool, error) {
if pt.p == nil || types.IsNil(other) {
return false, nil
}
pp, err := unwrapPage(other)
if err != nil {
return false, err
}
if pp == nil {
return false, nil
}
return pp.CurrentSection().Eq(pt.p.CurrentSection()), nil
}
func (pt pageTree) Parent() page.Page {
return pt.p.parent
}
func (pt pageTree) Sections() page.Pages {
return pt.p.subSections
}