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Copy pathprotyle_tabs.go
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155 lines (147 loc) · 4.72 KB
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package lute
import (
"bytes"
"strings"
"github.com/88250/lute/ast"
"github.com/88250/lute/html"
"github.com/88250/lute/parse"
"github.com/88250/lute/util"
)
// tabTitleMarkdown 用边界文本保护标题空白，并以字符实体保留 Markdown 行首、行尾的空格。
func (lute *Lute) tabTitleMarkdown(title *html.Node, standardHTML bool) string {
var dom bytes.Buffer
dom.WriteString("LuteTabTitleStart")
for child := title.FirstChild; nil != child; child = child.NextSibling {
dom.Write(util.DomHTML(child))
}
dom.WriteString("LuteTabTitleEnd")
var markdown string
if standardHTML {
markdown = lute.HTML2Md(dom.String())
} else {
markdown = lute.BlockDOM2Md(dom.String())
}
markdown = strings.TrimSpace(markdown)
markdown = strings.TrimPrefix(markdown, "LuteTabTitleStart")
markdown = strings.TrimSuffix(markdown, "LuteTabTitleEnd")
leading := len(markdown) - len(strings.TrimLeft(markdown, " "))
trailing := len(markdown) - len(strings.TrimRight(markdown, " "))
if leading == len(markdown) {
return strings.Repeat(" ", leading)
}
return strings.Repeat(" ", leading) + markdown[leading:len(markdown)-trailing] + strings.Repeat(" ", trailing)
}
func hasDOMClass(node *html.Node, name string) bool {
for _, class := range strings.Fields(util.DomAttrValue(node, "class")) {
if class == name {
return true
}
}
return false
}
func directDOMChildByClass(node *html.Node, name string) *html.Node {
for child := node.FirstChild; nil != child; child = child.NextSibling {
if hasDOMClass(child, name) {
return child
}
}
return nil
}
func (lute *Lute) genASTByTabsDOM(dom *html.Node, tree *parse.Tree) bool {
if !lute.ParseOptions.Tabs || (!hasDOMClass(dom, "tabs") && !hasDOMClass(dom, "tab-item")) {
return false
}
node := &ast.Node{Type: ast.NodeTabs}
if hasDOMClass(dom, "tab-item") {
node.Type = ast.NodeTabItem
if info := directDOMChildByClass(dom, "tab-item-info"); nil != info {
if title := directDOMChildByClass(info, "tab-item-title"); nil != title {
node.TabItemTitle = lute.tabTitleMarkdown(title, true)
}
}
}
for _, name := range []string{"tabs-active-id", "tabs-position", "tabs-task"} {
if value := util.DomAttrValue(dom, name); "" != value {
node.SetIALAttr(name, value)
}
}
node.ID = util.DomAttrValue(dom, "data-node-id")
if "" != node.ID {
node.SetIALAttr("id", node.ID)
}
tree.Context.Tip.AppendChild(node)
tree.Context.Tip = node
if ast.NodeTabItem == node.Type {
if info := directDOMChildByClass(dom, "tab-item-info"); nil != info {
for child := info.FirstChild; nil != child; child = child.NextSibling {
if "true" == util.DomAttrValue(child, "tabs-title") {
lute.genASTByBlockDOM(child, tree)
break
}
}
}
if content := directDOMChildByClass(dom, "tab-item-content"); nil != content {
for child := content.FirstChild; nil != child; child = child.NextSibling {
lute.genASTByDOM(child, tree)
}
}
} else {
for child := dom.FirstChild; nil != child; child = child.NextSibling {
if hasDOMClass(child, "tab-item") {
lute.genASTByTabsDOM(child, tree)
}
}
}
tree.Context.ParentTip()
if 0 < len(node.KramdownIAL) {
node.InsertAfter(&ast.Node{Type: ast.NodeKramdownBlockIAL, Tokens: parse.IAL2Tokens(node.KramdownIAL)})
}
return true
}
// wrapTabItemFragments 为独立编辑的页签项添加临时语法容器，保持内部 Markdown 可以完整解析。
func wrapTabItemFragments(tree *parse.Tree) (wrappers map[string]bool) {
wrappers = map[string]bool{}
for node := tree.Root.FirstChild; nil != node; {
next := node.Next
if ast.NodeTabItem == node.Type {
if "" == node.ID {
node.ID = ast.NewNodeID()
node.SetIALAttr("id", node.ID)
}
wrapper := &ast.Node{Type: ast.NodeTabs, ID: ast.NewNodeID()}
wrapper.SetIALAttr("id", wrapper.ID)
node.InsertBefore(wrapper)
wrapper.AppendChild(node)
if nil != next && ast.NodeKramdownBlockIAL == next.Type {
ial := next
next = ial.Next
wrapper.AppendChild(ial)
} else {
wrapper.AppendChild(&ast.Node{Type: ast.NodeKramdownBlockIAL, Tokens: parse.IAL2Tokens(node.KramdownIAL)})
}
wrapper.InsertAfter(&ast.Node{Type: ast.NodeKramdownBlockIAL, Tokens: parse.IAL2Tokens(wrapper.KramdownIAL)})
wrappers[wrapper.ID] = true
}
node = next
}
return
}
func unwrapTabItemFragments(tree *parse.Tree, wrappers map[string]bool) {
for node := tree.Root.FirstChild; nil != node; {
next := node.Next
if ast.NodeTabs == node.Type && wrappers[node.ID] {
for child := node.FirstChild; nil != child; {
childNext := child.Next
node.InsertBefore(child)
child = childNext
}
if nil != next && ast.NodeKramdownBlockIAL == next.Type {
ial := next
next = next.Next
ial.Unlink()
}
node.Unlink()
}
node = next
}
}