mirror of
https://github.com/MessageKit/MessageKit.git
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68 lines
2.2 KiB
Swift
68 lines
2.2 KiB
Swift
/*
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MIT License
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Copyright (c) 2017-2019 MessageKit
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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import Foundation
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import CoreGraphics
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import UIKit
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/// A protocol used to represent the data for a link preview message.
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public protocol LinkItem {
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/// A link item needs a message to present, it can be a simple String or
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/// a NSAttributedString, but only one will be shown.
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/// LinkItem.text has priority over LinkItem.attributedText.
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/// The message text.
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var text: String? { get }
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/// The message attributed text.
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var attributedText: NSAttributedString? { get }
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/// The URL.
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var url: URL { get }
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/// The title.
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var title: String? { get }
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/// The teaser text.
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var teaser: String { get }
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/// The thumbnail image.
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var thumbnailImage: UIImage { get }
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}
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public extension LinkItem {
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var textKind: MessageKind {
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let kind: MessageKind
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if let text = self.text {
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kind = .text(text)
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} else if let attributedText = self.attributedText {
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kind = .attributedText(attributedText)
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} else {
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fatalError("LinkItem must have \"text\" or \"attributedText\"")
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}
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return kind
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}
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}
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