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155 lines
4.7 KiB
155 lines
4.7 KiB
// Copyright (c) 2016-present, Facebook, Inc. All rights reserved.
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//
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// You are hereby granted a non-exclusive, worldwide, royalty-free license to use,
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// copy, modify, and distribute this software in source code or binary form for use
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// in connection with the web services and APIs provided by Facebook.
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//
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// As with any software that integrates with the Facebook platform, your use of
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// this software is subject to the Facebook Developer Principles and Policies
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// [http://developers.facebook.com/policy/]. This copyright notice shall be
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// included in all copies or substantial portions of the software.
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//
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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, FITNESS
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// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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import FBSDKShareKit
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/// A dialog for sharing content on Facebook.
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public final class ShareDialog<Content: ContentProtocol> {
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fileprivate let sdkSharer: FBSDKShareDialog
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fileprivate let sdkShareDelegate: SDKSharingDelegateBridge<Content>
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/**
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A `UIViewController` to present the dialog from.
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If not specified, the top most view controller will be automatically determined as best as possible.
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*/
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public var presentingViewController: UIViewController? {
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get {
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return sdkSharer.fromViewController
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}
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set {
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sdkSharer.fromViewController = newValue
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}
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}
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/**
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The mode with which to display the dialog.
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Defaults to `.Automatic`, which will automatically choose the best available mode.
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*/
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public var mode: ShareDialogMode {
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get {
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return ShareDialogMode(sdkShareMode: sdkSharer.mode)
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}
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set {
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sdkSharer.mode = newValue.sdkShareMode
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}
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}
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/**
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Create a `ShareDialog` with a given content.
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- parameter content: The content to share.
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*/
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public init(content: Content) {
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sdkSharer = FBSDKShareDialog()
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sdkShareDelegate = SDKSharingDelegateBridge<Content>()
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sdkShareDelegate.setupAsDelegateFor(sdkSharer)
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sdkSharer.shareContent = ContentBridger.bridgeToObjC(content)
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}
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}
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extension ShareDialog: ContentSharingProtocol {
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/// The content that is being shared.
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public var content: Content {
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get {
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guard let swiftContent: Content = ContentBridger.bridgeToSwift(sdkSharer.shareContent) else {
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fatalError("Content of our private share dialog has changed type. Something horrible has happened.")
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}
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return swiftContent
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}
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}
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/// The completion handler to be invoked upon the share performing.
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public var completion: ((ContentSharerResult<Content>) -> Void)? {
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get {
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return sdkShareDelegate.completion
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}
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set {
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sdkShareDelegate.completion = newValue
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}
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}
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/// Whether or not this sharer fails on invalid data.
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public var failsOnInvalidData: Bool {
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get {
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return sdkSharer.shouldFailOnDataError
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}
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set {
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sdkSharer.shouldFailOnDataError = newValue
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}
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}
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/**
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Validates the content on the receiver.
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- throws: If The content could not be validated.
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*/
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public func validate() throws {
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try sdkSharer.validate()
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}
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}
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extension ShareDialog: ContentSharingDialogProtocol {
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/**
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Shows the dialog.
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- throws: If the dialog cannot be presented.
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*/
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public func show() throws {
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var error: Error?
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let completionHandler = sdkShareDelegate.completion
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sdkShareDelegate.completion = {
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if case .failed(let resultError) = $0 {
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error = resultError
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}
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}
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sdkSharer.show()
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sdkShareDelegate.completion = completionHandler
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if let error = error {
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throw error
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}
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}
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}
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extension ShareDialog {
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/**
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Convenience method to create and show a `ShareDialog` with a `fromViewController`, `content`, and `completion`.
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- parameter viewController: The viewController to present the dialog from.
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- parameter content: The content to share.
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- parameter completion: The completion handler to invoke.
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- returns: The `ShareDialog` that has been presented.
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- throws: If the dialog fails to validate.
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*/
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@discardableResult
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public static func show(from viewController: UIViewController,
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content: Content,
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completion: ((ContentSharerResult<Content>) -> Void)? = nil) throws -> Self {
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let shareDialog = self.init(content: content)
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shareDialog.presentingViewController = viewController
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shareDialog.completion = completion
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try shareDialog.show()
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return shareDialog
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}
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}
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