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// 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 hooks
import (
"io"
"github.com/gohugoio/hugo/identity"
)
type LinkContext interface {
Page() interface{}
Destination() string
Title() string
Text() string
PlainText() string
}
type LinkRenderer interface {
RenderLink(w io.Writer, ctx LinkContext) error
identity.Provider
}
// HeadingContext contains accessors to all attributes that a HeadingRenderer
// can use to render a heading.
type HeadingContext interface {
// Page is the page containing the heading.
Page() interface{}
// Level is the level of the header (i.e. 1 for top-level, 2 for sub-level, etc.).
Level() int
// Anchor is the HTML id assigned to the heading.
Anchor() string
// Text is the rendered (HTML) heading text, excluding the heading marker.
Text() string
// PlainText is the unrendered version of Text.
PlainText() string
}
// HeadingRenderer describes a uniquely identifiable rendering hook.
type HeadingRenderer interface {
// Render writes the renderered content to w using the data in w.
RenderHeading(w io.Writer, ctx HeadingContext) error
identity.Provider
}
type Renderers struct {
LinkRenderer LinkRenderer
ImageRenderer LinkRenderer
HeadingRenderer HeadingRenderer
}
func (r *Renderers) Eq(other interface{}) bool {
ro, ok := other.(*Renderers)
if !ok {
return false
}
if r == nil || ro == nil {
return r == nil
}
if r.ImageRenderer.GetIdentity() != ro.ImageRenderer.GetIdentity() {
return false
}
if r.LinkRenderer.GetIdentity() != ro.LinkRenderer.GetIdentity() {
return false
}
if r.HeadingRenderer.GetIdentity() != ro.HeadingRenderer.GetIdentity() {
return false
}
return true
}
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