mirror of
https://github.com/MessageKit/MessageKit.git
synced 2026-02-06 19:03:19 +00:00
Nathan Tannar
82 lines
2.9 KiB
Swift
82 lines
2.9 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 UIKit
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internal class NSLayoutConstraintSet {
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internal var top: NSLayoutConstraint?
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internal var bottom: NSLayoutConstraint?
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internal var left: NSLayoutConstraint?
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internal var right: NSLayoutConstraint?
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internal var centerX: NSLayoutConstraint?
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internal var centerY: NSLayoutConstraint?
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internal var width: NSLayoutConstraint?
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internal var height: NSLayoutConstraint?
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internal init(top: NSLayoutConstraint? = nil, bottom: NSLayoutConstraint? = nil,
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left: NSLayoutConstraint? = nil, right: NSLayoutConstraint? = nil,
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centerX: NSLayoutConstraint? = nil, centerY: NSLayoutConstraint? = nil,
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width: NSLayoutConstraint? = nil, height: NSLayoutConstraint? = nil) {
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self.top = top
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self.bottom = bottom
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self.left = left
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self.right = right
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self.centerX = centerX
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self.centerY = centerY
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self.width = width
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self.height = height
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}
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/// All of the currently configured constraints
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private var availableConstraints: [NSLayoutConstraint] {
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let constraints = [top, bottom, left, right, centerX, centerY, width, height]
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var available: [NSLayoutConstraint] = []
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for constraint in constraints {
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if let value = constraint {
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available.append(value)
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}
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}
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return available
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}
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/// Activates all of the non-nil constraints
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///
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/// - Returns: Self
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@discardableResult
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internal func activate() -> Self {
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NSLayoutConstraint.activate(availableConstraints)
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return self
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}
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/// Deactivates all of the non-nil constraints
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///
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/// - Returns: Self
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@discardableResult
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internal func deactivate() -> Self {
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NSLayoutConstraint.deactivate(availableConstraints)
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return self
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}
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}
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