28 lines
1.3 KiB
Swift
28 lines
1.3 KiB
Swift
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public extension UIView {
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func wmf_hasRequiredNonZeroHeightConstraint() -> Bool {
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let requiredHeightConstraint = constraints.first(where: {constraint in
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guard
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type(of: constraint) == NSLayoutConstraint.self,
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constraint.firstAttribute == .height,
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constraint.priority == UILayoutPriority.required,
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constraint.constant != 0
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else {
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return false
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}
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return true
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})
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return (requiredHeightConstraint != nil)
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}
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}
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public extension UIStackView {
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func wmf_firstArrangedSubviewWithRequiredNonZeroHeightConstraint() -> UIView? {
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return arrangedSubviews.first(where: { arrangedSubview in
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return arrangedSubview.wmf_hasRequiredNonZeroHeightConstraint()
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})
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}
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func wmf_anArrangedSubviewHasRequiredNonZeroHeightConstraintAssertString() -> String {
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return "\n\nAll stackview arrangedSubview height constraints need to have a priority of < 1000 so the stackview can collapse the 'cell' if the arrangedSubview's isHidden property is set to true. This arrangedSubview was determined to have a required height: \(String(describing: wmf_firstArrangedSubviewWithRequiredNonZeroHeightConstraint())). To fix reduce the priority of its height constraint to < 1000.\n\n"
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}
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}
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