9f847454e7
* Fix Timeline on Xcode 14/iOS 16
Raise requirement to iOS 16+
Reduce pagination jumping.
Sonarcloud fixes.
Fix verification test.
Adopt if let optional { syntax.
* Remove unused ScrollViewReader
The ScrollViewReader didn't appear to change the behaviour.
* Fix warnings on Run Scripts.
Run script build phase 'SwiftLint' will be run during every build because it does not specify any outputs. To address this warning, either add output dependencies to the script phase, or configure it to run in every build by unchecking "Based on dependency analysis" in the script phase.
77 lines
3.0 KiB
Swift
77 lines
3.0 KiB
Swift
//
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// Copyright 2022 New Vector Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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import DTCoreText
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import Foundation
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public extension DTHTMLElement {
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/// Sanitize the element using the given parameters.
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/// - Parameters:
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/// - font: The default font to use when resetting the content of any unsupported tags.
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@objc func sanitize(font: UIFont) {
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if let name, !Self.allowedHTMLTags.contains(name) {
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// This is an unsupported tag.
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// Remove any attachments to fix rendering.
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textAttachment = nil
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// If the element has plain text content show that,
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// otherwise prevent the tag from displaying.
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if let stringContent = attributedString()?.string,
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!stringContent.isEmpty,
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let element = DTTextHTMLElement(name: nil, attributes: nil) {
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element.setText(stringContent)
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removeAllChildNodes()
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addChildNode(element)
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if let parent = parent() {
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element.inheritAttributes(from: parent)
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} else {
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fontDescriptor = DTCoreTextFontDescriptor()
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fontDescriptor.fontFamily = font.familyName
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fontDescriptor.fontName = font.fontName
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fontDescriptor.pointSize = font.pointSize
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paragraphStyle = DTCoreTextParagraphStyle.default()
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element.inheritAttributes(from: self)
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}
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element.interpretAttributes()
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} else if let parent = parent() {
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parent.removeChildNode(self)
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} else {
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didOutput = true
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}
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} else {
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// This element is a supported tag, but it may contain children that aren't,
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// so santize all child nodes to ensure correct tags.
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if let childNodes = childNodes as? [DTHTMLElement] {
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childNodes.forEach { $0.sanitize(font: font) }
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}
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}
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}
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private static var allowedHTMLTags = {
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["font", // custom to matrix for IRC-style font coloring
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"del", // for markdown
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"body", // added internally by DTCoreText
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"mx-reply",
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"h1", "h2", "h3", "h4", "h5", "h6", "blockquote", "p", "a", "ul", "ol",
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"nl", "li", "b", "i", "u", "strong", "em", "strike", "code", "hr", "br", "div",
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"table", "thead", "caption", "tbody", "tr", "th", "td", "pre"]
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}()
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}
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