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Add support for ordered and unordered lists.

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This commit is contained in:
Stefan Ceriu
2025-08-26 18:10:23 +03:00
committed by Doug
parent d982f86320
commit bc55cf4a10
10 changed files with 63 additions and 33 deletions
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ElementX/Sources/Other/HTMLParsing/AttributedStringBuilderV2.swift
+45 -15
View File
@@ -71,7 +71,8 @@ struct AttributedStringBuilderV2: AttributedStringBuilderProtocol {
return nil return nil
} }
let mutableAttributedString = attributedString(from: body, preserveFormatting: false) var listIndex = 1
let mutableAttributedString = attributedString(from: body, preserveFormatting: false, listTag: nil, listIndex: &listIndex, indentLevel: 0)
detectPhishingAttempts(mutableAttributedString) detectPhishingAttempts(mutableAttributedString)
addLinksAndMentions(mutableAttributedString) addLinksAndMentions(mutableAttributedString)
addMatrixEntityPermalinkAttributesTo(mutableAttributedString) addMatrixEntityPermalinkAttributesTo(mutableAttributedString)
@@ -84,7 +85,10 @@ struct AttributedStringBuilderV2: AttributedStringBuilderProtocol {
// MARK: - Private // MARK: - Private
func attributedString(from element: Element, preserveFormatting: Bool) -> NSMutableAttributedString { func attributedString(from element: Element, preserveFormatting: Bool,
listTag: String?,
listIndex: inout Int,
indentLevel: Int) -> NSMutableAttributedString {
let result = NSMutableAttributedString() let result = NSMutableAttributedString()
for node in element.getChildNodes() { for node in element.getChildNodes() {
@@ -108,54 +112,55 @@ struct AttributedStringBuilderV2: AttributedStringBuilderProtocol {
let tag = childElement.tagName().lowercased() let tag = childElement.tagName().lowercased()
var content = NSMutableAttributedString() var content = NSMutableAttributedString()
var childIndex = 1
switch tag { switch tag {
case "h1", "h2", "h3", "h4", "h5", "h6": case "h1", "h2", "h3", "h4", "h5", "h6":
let level = Int(String(tag.dropFirst())) ?? 1 let level = Int(String(tag.dropFirst())) ?? 1
let size: CGFloat = UIFont.systemFontSize + CGFloat(6 - level) * 2 let size: CGFloat = UIFont.systemFontSize + CGFloat(6 - level) * 2
content = attributedString(from: childElement, preserveFormatting: preserveFormatting) content = attributedString(from: childElement, preserveFormatting: preserveFormatting, listTag: listTag, listIndex: &childIndex, indentLevel: indentLevel)
content.setFontPreservingSymbolicTraits(UIFont.boldSystemFont(ofSize: size)) content.setFontPreservingSymbolicTraits(UIFont.boldSystemFont(ofSize: size))
case "p", "div": case "p", "div":
content = attributedString(from: childElement, preserveFormatting: preserveFormatting) content = attributedString(from: childElement, preserveFormatting: preserveFormatting, listTag: listTag, listIndex: &childIndex, indentLevel: indentLevel)
content.append(NSAttributedString(string: "\n")) content.append(NSAttributedString(string: "\n"))
case "br": case "br":
content = NSMutableAttributedString(string: "\n") content = NSMutableAttributedString(string: "\n")
case "b", "strong": case "b", "strong":
content = attributedString(from: childElement, preserveFormatting: preserveFormatting) content = attributedString(from: childElement, preserveFormatting: preserveFormatting, listTag: listTag, listIndex: &childIndex, indentLevel: indentLevel)
content.setFontPreservingSymbolicTraits(UIFont.boldSystemFont(ofSize: UIFont.systemFontSize)) content.setFontPreservingSymbolicTraits(UIFont.boldSystemFont(ofSize: UIFont.systemFontSize))
case "i", "em": case "i", "em":
content = attributedString(from: childElement, preserveFormatting: preserveFormatting) content = attributedString(from: childElement, preserveFormatting: preserveFormatting, listTag: listTag, listIndex: &childIndex, indentLevel: indentLevel)
content.setFontPreservingSymbolicTraits(UIFont.italicSystemFont(ofSize: UIFont.systemFontSize)) content.setFontPreservingSymbolicTraits(UIFont.italicSystemFont(ofSize: UIFont.systemFontSize))
case "u": case "u":
content = attributedString(from: childElement, preserveFormatting: preserveFormatting) content = attributedString(from: childElement, preserveFormatting: preserveFormatting, listTag: listTag, listIndex: &childIndex, indentLevel: indentLevel)
content.addAttribute(.underlineStyle, value: NSUnderlineStyle.single.rawValue, range: NSRange(location: 0, length: content.length)) content.addAttribute(.underlineStyle, value: NSUnderlineStyle.single.rawValue, range: NSRange(location: 0, length: content.length))
case "s", "del": case "s", "del":
content = attributedString(from: childElement, preserveFormatting: preserveFormatting) content = attributedString(from: childElement, preserveFormatting: preserveFormatting, listTag: listTag, listIndex: &childIndex, indentLevel: indentLevel)
content.addAttribute(.strikethroughStyle, value: NSUnderlineStyle.single.rawValue, range: NSRange(location: 0, length: content.length)) content.addAttribute(.strikethroughStyle, value: NSUnderlineStyle.single.rawValue, range: NSRange(location: 0, length: content.length))
case "sup": case "sup":
content = attributedString(from: childElement, preserveFormatting: preserveFormatting) content = attributedString(from: childElement, preserveFormatting: preserveFormatting, listTag: listTag, listIndex: &childIndex, indentLevel: indentLevel)
content.addAttribute(.baselineOffset, value: 6, range: NSRange(location: 0, length: content.length)) content.addAttribute(.baselineOffset, value: 6, range: NSRange(location: 0, length: content.length))
content.setFontPreservingSymbolicTraits(UIFont.systemFont(ofSize: UIFont.systemFontSize * 0.7)) content.setFontPreservingSymbolicTraits(UIFont.systemFont(ofSize: UIFont.systemFontSize * 0.7))
case "sub": case "sub":
content = attributedString(from: childElement, preserveFormatting: preserveFormatting) content = attributedString(from: childElement, preserveFormatting: preserveFormatting, listTag: listTag, listIndex: &childIndex, indentLevel: indentLevel)
content.addAttribute(.baselineOffset, value: -4, range: NSRange(location: 0, length: content.length)) content.addAttribute(.baselineOffset, value: -4, range: NSRange(location: 0, length: content.length))
content.setFontPreservingSymbolicTraits(UIFont.systemFont(ofSize: UIFont.systemFontSize * 0.7)) content.setFontPreservingSymbolicTraits(UIFont.systemFont(ofSize: UIFont.systemFontSize * 0.7))
case "blockquote": case "blockquote":
content = attributedString(from: childElement, preserveFormatting: preserveFormatting) content = attributedString(from: childElement, preserveFormatting: preserveFormatting, listTag: listTag, listIndex: &childIndex, indentLevel: indentLevel)
content.addAttribute(.MatrixBlockquote, value: true, range: NSRange(location: 0, length: content.length)) content.addAttribute(.MatrixBlockquote, value: true, range: NSRange(location: 0, length: content.length))
case "code", "pre": case "code", "pre":
let preserveFormatting = preserveFormatting || tag == "pre" let preserveFormatting = preserveFormatting || tag == "pre"
content = attributedString(from: childElement, preserveFormatting: preserveFormatting) content = attributedString(from: childElement, preserveFormatting: preserveFormatting, listTag: listTag, listIndex: &childIndex, indentLevel: indentLevel)
content.setFontPreservingSymbolicTraits(UIFont.monospacedSystemFont(ofSize: UIFont.systemFontSize, weight: .regular)) content.setFontPreservingSymbolicTraits(UIFont.monospacedSystemFont(ofSize: UIFont.systemFontSize, weight: .regular))
content.addAttribute(.backgroundColor, value: UIColor.compound._bgCodeBlock as Any, range: NSRange(location: 0, length: content.length)) content.addAttribute(.backgroundColor, value: UIColor.compound._bgCodeBlock as Any, range: NSRange(location: 0, length: content.length))
@@ -163,18 +168,43 @@ struct AttributedStringBuilderV2: AttributedStringBuilderProtocol {
content = NSMutableAttributedString(string: "\n") content = NSMutableAttributedString(string: "\n")
case "a": case "a":
content = attributedString(from: childElement, preserveFormatting: preserveFormatting) content = attributedString(from: childElement, preserveFormatting: preserveFormatting, listTag: listTag, listIndex: &childIndex, indentLevel: indentLevel)
if let href = try? childElement.attr("href") { if let href = try? childElement.attr("href") {
content.addAttribute(.link, value: href, range: NSRange(location: 0, length: content.length)) content.addAttribute(.link, value: href, range: NSRange(location: 0, length: content.length))
} }
case "span": case "span":
if (try? childElement.attr(Self.attributeMSC4286)) ?? nil != nil { if (try? childElement.attr(Self.attributeMSC4286)) ?? nil != nil {
content = attributedString(from: childElement, preserveFormatting: preserveFormatting) content = attributedString(from: childElement, preserveFormatting: preserveFormatting, listTag: listTag, listIndex: &childIndex, indentLevel: indentLevel)
} }
case "ul", "ol":
var listIndex = 1
content = attributedString(from: childElement, preserveFormatting: preserveFormatting, listTag: tag, listIndex: &listIndex, indentLevel: indentLevel + 1)
if listTag == nil { // If not within another list
content.insert(NSAttributedString(string: "\n"), at: 0)
}
case "li":
var bullet = ""
if listTag == "ol" {
bullet = "\(listIndex). "
listIndex += 1
} else {
bullet = "• "
}
content = attributedString(from: childElement, preserveFormatting: preserveFormatting, listTag: listTag, listIndex: &childIndex, indentLevel: indentLevel + 1)
content.insert(NSAttributedString(string: bullet), at: 0)
content.append(NSAttributedString(string: "\n"))
let paragraphStyle = NSMutableParagraphStyle()
paragraphStyle.headIndent = CGFloat(indentLevel) * 20
paragraphStyle.firstLineHeadIndent = CGFloat(indentLevel) * 20
content.addAttribute(.paragraphStyle, value: paragraphStyle, range: NSRange(location: 0, length: content.length))
default: default:
content = attributedString(from: childElement, preserveFormatting: preserveFormatting) content = attributedString(from: childElement, preserveFormatting: preserveFormatting, listTag: listTag, listIndex: &childIndex, indentLevel: indentLevel)
} }
result.append(content) result.append(content)
ElementX/Sources/Screens/Timeline/View/TimelineItemViews/FormattedBodyText.swift
+1 -1
View File
@@ -213,7 +213,7 @@ struct FormattedBodyText_Previews: PreviewProvider, TestablePreview {
This is an unordered list This is an unordered list
<ul> <ul>
<li>Jones’ <b>Crumpets</b></li> <li>Jones’ <b>Crumpets</b></li>
<li><i>Crumpetorium<i></li> <li><i>Crumpetorium</i></li>
<li>Village <u>Bakery</u></li> <li>Village <u>Bakery</u></li>
</ul> </ul>
""", """,
PreviewTests/Sources/__Snapshots__/PreviewTests/formattedBodyText.iPad-en-GB-0.png
+2 -2
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@@ -1,3 +1,3 @@
version https://git-lfs.github.com/spec/v1 version https://git-lfs.github.com/spec/v1
oid sha256:0afe442ef495ebf79cfb765870127fd522e5634d9fcaf97ad7f18d2e6d61ff16 oid sha256:4ec1eee24450c078e2d930204eb6c4bd5f5a48c1d472926ad25dd061389d7c45
size 1144762 size 1144610
PreviewTests/Sources/__Snapshots__/PreviewTests/formattedBodyText.iPad-en-GB-1.png
+2 -2
View File
@@ -1,3 +1,3 @@
version https://git-lfs.github.com/spec/v1 version https://git-lfs.github.com/spec/v1
oid sha256:eeff85fc90e7c67e1812d308516d642ed5e534675384a9acbd7f1a112bb904f3 oid sha256:4d6c10079176b2c9d5d4155e0d917a25191723ce8b0c3c1c23a4b2ceed15f3fb
size 1106059 size 1116696
PreviewTests/Sources/__Snapshots__/PreviewTests/formattedBodyText.iPad-pseudo-0.png
+2 -2
View File
@@ -1,3 +1,3 @@
version https://git-lfs.github.com/spec/v1 version https://git-lfs.github.com/spec/v1
oid sha256:0afe442ef495ebf79cfb765870127fd522e5634d9fcaf97ad7f18d2e6d61ff16 oid sha256:4ec1eee24450c078e2d930204eb6c4bd5f5a48c1d472926ad25dd061389d7c45
size 1144762 size 1144610
PreviewTests/Sources/__Snapshots__/PreviewTests/formattedBodyText.iPad-pseudo-1.png
+2 -2
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@@ -1,3 +1,3 @@
version https://git-lfs.github.com/spec/v1 version https://git-lfs.github.com/spec/v1
oid sha256:eeff85fc90e7c67e1812d308516d642ed5e534675384a9acbd7f1a112bb904f3 oid sha256:4d6c10079176b2c9d5d4155e0d917a25191723ce8b0c3c1c23a4b2ceed15f3fb
size 1106059 size 1116696
PreviewTests/Sources/__Snapshots__/PreviewTests/formattedBodyText.iPhone-16-en-GB-0.png
+2 -2
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@@ -1,3 +1,3 @@
version https://git-lfs.github.com/spec/v1 version https://git-lfs.github.com/spec/v1
oid sha256:1c1d75edcce4fd949e15c41cf00a0ee5cb2974a5573ac079e9bbeef230008170 oid sha256:aeee2464439a366386e0ededbd5ebde7c330a9a90c26964dc9a63e56563dc7f5
size 1323823 size 1323827
PreviewTests/Sources/__Snapshots__/PreviewTests/formattedBodyText.iPhone-16-en-GB-1.png
+2 -2
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@@ -1,3 +1,3 @@
version https://git-lfs.github.com/spec/v1 version https://git-lfs.github.com/spec/v1
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PreviewTests/Sources/__Snapshots__/PreviewTests/formattedBodyText.iPhone-16-pseudo-0.png
+2 -2
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version https://git-lfs.github.com/spec/v1 version https://git-lfs.github.com/spec/v1
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