Files
letro-ios/ElementX/Sources/Screens/RoomScreen/View/Timeline/FormattedBodyText.swift
Stefan Ceriu 4def45a57b New timeline (#276) (#280)
* Fixes #276 - Rebuilt room timeline:
    - Removed the need for the ListCollectionViewAdapter
    - Rewrote the TimelineItemList without using introspection
    - Added ReversedScrollView for laying out items at the bottom/trailing
    - Rewrote TimelineProvider diffing through CollectionDifference (similar to the RoomSummaryProvider)
    - Added back `scrollDismissesKeyboard`  behavior
    - Various other tweaks and fixes
- Fixed various warnings:
    - removed async AttributedStringBuilder as AttributedString is non-sendable, made the RoomTimelineItemFactory synchronous
    - removed unused virtual timeline items
    - removed unused isOutgoing property from the FormattedBodyText
* Make TimelineItemContextMenuActions indentifiable and specify contextMenu identifiers
* Bump the matrix-rust-components-swift to v1.0.16-alpha
* Add changes file and changelog contribution guide
* Fix attributed string builder unit tests
2022-11-02 13:03:34 +02:00

102 lines
3.6 KiB
Swift

//
// Copyright 2022 New Vector Ltd
//
// 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.
//
import Foundation
import SwiftUI
struct FormattedBodyText: View {
let attributedComponents: [AttributedStringBuilderComponent]
var body: some View {
VStack(alignment: .leading, spacing: 8.0) {
ForEach(attributedComponents, id: \.self) { component in
if component.isBlockquote {
Text(component.attributedString.mergingAttributes(blockquoteAttributes))
.fixedSize(horizontal: false, vertical: true)
.foregroundColor(.element.primaryContent)
.padding(EdgeInsets(top: 6, leading: 12, bottom: 6, trailing: 12))
.clipped()
.background(Color.element.systemGray4)
.cornerRadius(13)
} else {
Text(component.attributedString)
.fixedSize(horizontal: false, vertical: true)
.foregroundColor(.element.primaryContent)
}
}
}
.tint(.element.accent)
}
private var blockquoteAttributes: AttributeContainer {
var container = AttributeContainer()
container.font = .element.caption1
return container
}
}
extension FormattedBodyText {
init(text: String) {
attributedComponents = [.init(attributedString: AttributedString(text), isBlockquote: false)]
}
}
struct FormattedBodyText_Previews: PreviewProvider {
static var previews: some View {
body.preferredColorScheme(.light)
body.preferredColorScheme(.dark)
}
@ViewBuilder
static var body: some View {
let htmlStrings = [
"""
Text before blockquote
<blockquote>
<b>bold</b> <i>italic</i>
</blockquote>
Text after blockquote
""",
"""
<blockquote>First blockquote with a <a href=\"https://www.matrix.org/\">link</a> in it</blockquote>
<blockquote>Second blockquote with a <a href=\"https://www.matrix.org/\">link</a> in it</blockquote>
<blockquote>Third blockquote with a <a href=\"https://www.matrix.org/\">link</a> in it</blockquote>
""",
"""
<code>Hello world</code>
<p>Text</p>
<code><b>Hello</b> <i>world</i></code>
<p>Text</p>
<code>Hello world</code>
"""
]
let attributedStringBuilder = AttributedStringBuilder()
VStack(alignment: .leading, spacing: 24.0) {
ForEach(htmlStrings, id: \.self) { htmlString in
let attributedString = attributedStringBuilder.fromHTML(htmlString)
if let components = attributedStringBuilder.blockquoteCoalescedComponentsFrom(attributedString) {
FormattedBodyText(attributedComponents: components)
.fixedSize()
}
}
FormattedBodyText(text: "Some plain text that's not an attributed component.")
}
}
}