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64 lines
1.7 KiB
64 lines
1.7 KiB
4 years ago
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//
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// ItemProviderValueResolver.swift
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// AlphaWalletShare
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//
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// Created by Vladyslav Shepitko on 11.11.2020.
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//
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import Foundation
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import Social
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import MobileCoreServices
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protocol ItemProviderValueResolver {
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var supportedTypes: [NSItemProvider.ItemType] { get }
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func resolve(itemType: NSItemProvider.ItemType, value: NSSecureCoding?) -> ShareContentAction?
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}
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class DefaultItemProviderValueResolver: ItemProviderValueResolver {
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var supportedTypes: [NSItemProvider.ItemType] {
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return [.url]
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}
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func resolve(itemType: NSItemProvider.ItemType, value: NSSecureCoding?) -> ShareContentAction? {
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return ShareContentAction(itemType: itemType, value: value)
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}
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}
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extension ShareContentAction {
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init?(itemType: NSItemProvider.ItemType, value: NSSecureCoding?) {
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switch itemType {
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case .url:
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guard let v = value as? URL else { return nil }
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self = .url(v)
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case .text:
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guard let v = value as? String else { return nil }
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self = .string(v)
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case .unknown:
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return nil
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}
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}
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}
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extension NSExtensionItem {
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func resolveAttachments(valueResolver: ItemProviderValueResolver, completion: @escaping (ShareContentAction?) -> Void) {
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guard let attachment = attachments?.first, valueResolver.supportedTypes.contains(attachment.type) else {
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completion(.none)
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return
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}
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attachment.loadItem(forTypeIdentifier: attachment.type.rawValue, options: nil) { result, _ in
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let value = valueResolver.resolve(itemType: attachment.type, value: result)
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DispatchQueue.main.async {
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completion(value)
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}
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}
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}
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}
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