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This commit is contained in:
Pfeil, Scott Robert 2020-04-10 09:38:00 -04:00
parent 57a5dbb064
commit 185efa547e
1 changed files with 17 additions and 9 deletions
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26
MVMCoreUI/BaseClasses/CollectionViewCell.swift
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@ -15,7 +15,9 @@ open class CollectionViewCell: UICollectionViewCell, MoleculeViewProtocol, MVMCo
open var molecule: MoleculeViewProtocol? open var molecule: MoleculeViewProtocol?
public let containerHelper = ContainerHelper() public let containerHelper = ContainerHelper()
open var model: CollectionItemModelProtocol? open var model: CollectionItemModelProtocol?
open var widthConstraint: NSLayoutConstraint?
/// The width, used for establishing columns
open var width: CGFloat?
private var initialSetupPerformed = false private var initialSetupPerformed = false
@ -57,7 +59,7 @@ open class CollectionViewCell: UICollectionViewCell, MoleculeViewProtocol, MVMCo
open func reset() { open func reset() {
molecule?.reset() molecule?.reset()
backgroundColor = .white backgroundColor = .white
widthConstraint?.isActive = false width = nil
} }
// MARK: - MoleculeViewProtocol // MARK: - MoleculeViewProtocol
@ -85,12 +87,18 @@ open class CollectionViewCell: UICollectionViewCell, MoleculeViewProtocol, MVMCo
// MARK: - CollectionTemplateItemProtocol // MARK: - CollectionTemplateItemProtocol
public func set(width: CGFloat) { public func set(width: CGFloat) {
if let widthConstraint = widthConstraint { self.width = width
widthConstraint.constant = width
widthConstraint.isActive = true
} else {
widthConstraint = contentView.widthAnchor.constraint(equalToConstant: width)
widthConstraint?.isActive = true
}
} }
// Column logic, set width.
override open func preferredLayoutAttributesFitting(_ layoutAttributes: UICollectionViewLayoutAttributes) -> UICollectionViewLayoutAttributes {
let autoLayoutAttributes = super.preferredLayoutAttributesFitting(layoutAttributes)
guard let width = width else { return autoLayoutAttributes }
let targetSize = CGSize(width: width, height: 0)
let newSize = contentView.systemLayoutSizeFitting(targetSize, withHorizontalFittingPriority: UILayoutPriority.required, verticalFittingPriority: UILayoutPriority.defaultLow)
let newFrame = CGRect(origin: autoLayoutAttributes.frame.origin, size: newSize)
autoLayoutAttributes.frame = newFrame
return autoLayoutAttributes
}
} }