mirrors
/
SnapKit
mirror of https://github.com/SnapKit/SnapKit
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Rework how updateConstraints works if no existing constraints 

updateConstraints will no longer allow creation of new constraints but if you call updateConstraints and there have been no previous constraints created it will re-route to makeConstraints
This commit is contained in:
Robert Payne 2016-09-10 21:51:20 +12:00
parent ac0b5829aa
commit 67271dc666
2 changed files with 6 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Source/Constraint.swift
View File

@ -225,8 +225,7 @@ public class Constraint {
let layoutConstraints = self.layoutConstraints
let existingLayoutConstraints = view.snp.layoutConstraints
if updatingExisting && existingLayoutConstraints.count > 0 {
if updatingExisting {
for layoutConstraint in layoutConstraints {
let existingLayoutConstraint = existingLayoutConstraints.first { $0 == layoutConstraint }
guard let updateLayoutConstraint = existingLayoutConstraint else {
@ -236,7 +235,6 @@ public class Constraint {
let updateLayoutAttribute = (updateLayoutConstraint.secondAttribute == .notAnAttribute) ? updateLayoutConstraint.firstAttribute : updateLayoutConstraint.secondAttribute
updateLayoutConstraint.constant = self.constant.constraintConstantTargetValueFor(layoutAttribute: updateLayoutAttribute)
}
} else {
NSLayoutConstraint.activate(layoutConstraints)
view.snp.add(layoutConstraints: layoutConstraints)

5
Source/ConstraintMaker.swift
View File

@ -180,6 +180,11 @@ public class ConstraintMaker {
}
internal static func updateConstraints(view: ConstraintView, closure: (_ make: ConstraintMaker) -> Void) {
guard view.snp.layoutConstraints.count > 0 else {
self.makeConstraints(view: view, closure: closure)
return
}
let maker = ConstraintMaker(view: view)
closure(maker)
let constraints = maker.descriptions