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gitea/modules/markup/html_node.go
wxiaoguang 3f9c3e7bc3
Refactor render system (#32492)
There were too many patches to the Render system, it's really difficult
to make further improvements.

This PR clears the legacy problems and fix TODOs.

1. Rename `RenderContext.Type` to `RenderContext.MarkupType` to clarify
its usage.
2. Use `ContentMode` to replace `meta["mode"]` and `IsWiki`, to clarify
the rendering behaviors.
3. Use "wiki" mode instead of "mode=gfm + wiki=true"
4. Merge `renderByType` and `renderByFile`
5. Add more comments

----

The problem of "mode=document": in many cases it is not set, so many
non-comment places use comment's hard line break incorrectly
2024-11-14 05:02:11 +00:00

62 lines
1.7 KiB
Go

// Copyright 2024 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package markup
import (
"code.gitea.io/gitea/modules/util"
"golang.org/x/net/html"
)
func visitNodeImg(ctx *RenderContext, img *html.Node) (next *html.Node) {
next = img.NextSibling
for i, attr := range img.Attr {
if attr.Key != "src" {
continue
}
if IsNonEmptyRelativePath(attr.Val) {
attr.Val = util.URLJoin(ctx.Links.ResolveMediaLink(ctx.ContentMode == RenderContentAsWiki), attr.Val)
// By default, the "<img>" tag should also be clickable,
// because frontend use `<img>` to paste the re-scaled image into the markdown,
// so it must match the default markdown image behavior.
hasParentAnchor := false
for p := img.Parent; p != nil; p = p.Parent {
if hasParentAnchor = p.Type == html.ElementNode && p.Data == "a"; hasParentAnchor {
break
}
}
if !hasParentAnchor {
imgA := &html.Node{Type: html.ElementNode, Data: "a", Attr: []html.Attribute{
{Key: "href", Val: attr.Val},
{Key: "target", Val: "_blank"},
}}
parent := img.Parent
imgNext := img.NextSibling
parent.RemoveChild(img)
parent.InsertBefore(imgA, imgNext)
imgA.AppendChild(img)
}
}
attr.Val = camoHandleLink(attr.Val)
img.Attr[i] = attr
}
return next
}
func visitNodeVideo(ctx *RenderContext, node *html.Node) (next *html.Node) {
next = node.NextSibling
for i, attr := range node.Attr {
if attr.Key != "src" {
continue
}
if IsNonEmptyRelativePath(attr.Val) {
attr.Val = util.URLJoin(ctx.Links.ResolveMediaLink(ctx.ContentMode == RenderContentAsWiki), attr.Val)
}
attr.Val = camoHandleLink(attr.Val)
node.Attr[i] = attr
}
return next
}