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80 lines
3.3 KiB
Swift
80 lines
3.3 KiB
Swift
/*
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Copyright 2019 The Matrix.org Foundation C.I.C
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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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http://www.apache.org/licenses/LICENSE-2.0
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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 UIKit
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import MobileCoreServices
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@objc public protocol MXKDocumentPickerPresenterDelegate {
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func documentPickerPresenter(_ presenter: MXKDocumentPickerPresenter, didPickDocumentsAt url: URL)
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func documentPickerPresenterWasCancelled(_ presenter: MXKDocumentPickerPresenter)
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}
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/// MXKDocumentPickerPresenter presents a controller that provides access to documents or destinations outside the app’s sandbox.
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/// Internally presents a UIDocumentPickerViewController in UIDocumentPickerMode.import.
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/// Note: You must turn on the iCloud Documents capabilities in Xcode (see https://developer.apple.com/library/archive/documentation/FileManagement/Conceptual/DocumentPickerProgrammingGuide/Introduction/Introduction.html#//apple_ref/doc/uid/TP40014451)
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@objcMembers
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public class MXKDocumentPickerPresenter: NSObject {
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// MARK: - Properties
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// MARK: Private
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private weak var presentingViewController: UIViewController?
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// MARK: Public
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public weak var delegate: MXKDocumentPickerPresenterDelegate?
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public var isPresenting: Bool {
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return self.presentingViewController?.parent != nil
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}
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// MARK: - Public
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/// Presents a document picker view controller modally.
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///
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/// - Parameters:
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/// - allowedUTIs: Allowed pickable file UTIs.
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/// - viewController: The view controller on which to present the document picker.
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/// - animated: Indicate true to animate.
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/// - completion: Animation completion.
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public func presentDocumentPicker(with allowedUTIs: [MXKUTI], from viewController: UIViewController, animated: Bool, completion: (() -> Void)?) {
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let documentTypes = allowedUTIs.map { return $0.rawValue }
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let documentPicker = UIDocumentPickerViewController(documentTypes: documentTypes, in: .import)
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documentPicker.delegate = self
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viewController.present(documentPicker, animated: animated, completion: completion)
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self.presentingViewController = viewController
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}
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}
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// MARK - UIDocumentPickerDelegate
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extension MXKDocumentPickerPresenter: UIDocumentPickerDelegate {
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public func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {
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guard let url = urls.first else {
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return
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}
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self.delegate?.documentPickerPresenter(self, didPickDocumentsAt: url)
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}
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public func documentPickerWasCancelled(_ controller: UIDocumentPickerViewController) {
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self.delegate?.documentPickerPresenterWasCancelled(self)
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}
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public func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentAt url: URL) {
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self.delegate?.documentPickerPresenter(self, didPickDocumentsAt: url)
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}
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}
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