hugo/hugolib/page__position.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

76 lines
1.6 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/lazy"
"github.com/gohugoio/hugo/resources/page"
)
func newPagePosition(n *nextPrev) pagePosition {
return pagePosition{nextPrev: n}
}
func newPagePositionInSection(n *nextPrev) pagePositionInSection {
return pagePositionInSection{nextPrev: n}
}
type nextPrev struct {
init *lazy.Init
prevPage page.Page
nextPage page.Page
}
func (n *nextPrev) next() page.Page {
n.init.Do()
return n.nextPage
}
func (n *nextPrev) prev() page.Page {
n.init.Do()
return n.prevPage
}
type pagePosition struct {
*nextPrev
}
func (p pagePosition) Next() page.Page {
return p.next()
}
func (p pagePosition) NextPage() page.Page {
return p.Next()
}
func (p pagePosition) Prev() page.Page {
return p.prev()
}
func (p pagePosition) PrevPage() page.Page {
return p.Prev()
}
type pagePositionInSection struct {
*nextPrev
}
func (p pagePositionInSection) NextInSection() page.Page {
return p.next()
}
func (p pagePositionInSection) PrevInSection() page.Page {
return p.prev()
}