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// Copyright (c) 2016-present, Facebook, Inc. All rights reserved.
//
// You are hereby granted a non-exclusive, worldwide, royalty-free license to use,
// copy, modify, and distribute this software in source code or binary form for use
// in connection with the web services and APIs provided by Facebook.
//
// As with any software that integrates with the Facebook platform, your use of
// this software is subject to the Facebook Developer Principles and Policies
// [http://developers.facebook.com/policy/]. This copyright notice shall be
// included in all copies or substantial portions of the software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
import Foundation
import FBSDKShareKit
/**
A button to like an object.
Tapping the receiver will invoke an API call to the Facebook app through a fast-app-switch that allows
the object to be liked. Upon return to the calling app, the view will update with the new state. If the
currentAccessToken has "publish_actions" permission and the object is an Open Graph object, then the like can happen
seamlessly without the fast-app-switch.
*/
public class LikeButton: UIView {
fileprivate var sdkLikeButton: FBSDKLikeButton
/// If `true`, a sound is played when the reciever is toggled.
public var isSoundEnabled: Bool {
get {
return sdkLikeButton.isSoundEnabled
}
set {
sdkLikeButton.isSoundEnabled = newValue
}
}
/// The object to like
public var object: LikableObject {
get {
return LikableObject(sdkObjectType: sdkLikeButton.objectType, sdkObjectId: sdkLikeButton.objectID)
}
set {
let sdkRepresentation = newValue.sdkObjectRepresntation
sdkLikeButton.objectType = sdkRepresentation.objectType
sdkLikeButton.objectID = sdkRepresentation.objectId
}
}
/**
Create a new LikeButton with a given frame and object.
- parameter frame: The frame to initialize with.
- parameter object: The object to like.
*/
public init(frame: CGRect? = nil, object: LikableObject) {
let sdkLikeButton = FBSDKLikeButton()
let frame = frame ?? sdkLikeButton.bounds
self.sdkLikeButton = sdkLikeButton
super.init(frame: frame)
self.object = object
self.addSubview(sdkLikeButton)
}
/**
Create a new LikeButton from an encoded interface file.
- parameter aDecoder: The coder to initialize from.
*/
public required init?(coder aDecoder: NSCoder) {
sdkLikeButton = FBSDKLikeButton()
super.init(coder: aDecoder)
addSubview(sdkLikeButton)
}
/**
Performs logic for laying out subviews.
*/
public override func layoutSubviews() {
super.layoutSubviews()
sdkLikeButton.frame = CGRect(origin: .zero, size: bounds.size)
}
/**
Resizes and moves the receiver view so it just encloses its subviews.
*/
public override func sizeToFit() {
bounds.size = sizeThatFits(CGSize(width: CGFloat.greatestFiniteMagnitude, height: CGFloat.greatestFiniteMagnitude))
}
/**
Asks the view to calculate and return the size that best fits the specified size.
- parameter size: A new size that fits the receivers subviews.
- returns: A new size that fits the receivers subviews.
*/
public override func sizeThatFits(_ size: CGSize) -> CGSize {
return sdkLikeButton.sizeThatFits(size)
}
/**
Returns the natural size for the receiving view, considering only properties of the view itself.
- returns: A size indicating the natural size for the receiving view based on its intrinsic properties.
*/
public override var intrinsicContentSize: CGSize {
return sdkLikeButton.intrinsicContentSize
}
}