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Merge pull request #226 from jlalvarez18/develop 

Added convenient super view methods to ConstraintDescriptionRelatable
This commit is contained in:
Robert Payne 2016-04-22 22:33:24 +12:00
parent 2386dd9adb 70d17ab4af
commit 5e38ccf3fc
2 changed files with 53 additions and 0 deletions
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24
Source/ConstraintDescription.swift
View File

@ -95,6 +95,7 @@ public protocol ConstraintDescriptionRelatable: class {
func equalTo(other: ConstraintItem) -> ConstraintDescriptionEditable
func equalTo(other: View) -> ConstraintDescriptionEditable
func equalToSuperview() -> ConstraintDescriptionEditable
@available(iOS 7.0, *)
func equalTo(other: LayoutSupport) -> ConstraintDescriptionEditable
@available(iOS 9.0, OSX 10.11, *)
@ -110,6 +111,7 @@ public protocol ConstraintDescriptionRelatable: class {
func lessThanOrEqualTo(other: ConstraintItem) -> ConstraintDescriptionEditable
func lessThanOrEqualTo(other: View) -> ConstraintDescriptionEditable
func lessThanOrEqualToSuperview() -> ConstraintDescriptionEditable
@available(iOS 7.0, *)
func lessThanOrEqualTo(other: LayoutSupport) -> ConstraintDescriptionEditable
@available(iOS 9.0, OSX 10.11, *)
@ -125,6 +127,7 @@ public protocol ConstraintDescriptionRelatable: class {
func greaterThanOrEqualTo(other: ConstraintItem) -> ConstraintDescriptionEditable
func greaterThanOrEqualTo(other: View) -> ConstraintDescriptionEditable
func greaterThanOrEqualToSuperview() -> ConstraintDescriptionEditable
@available(iOS 7.0, *)
func greaterThanOrEqualTo(other: LayoutSupport) -> ConstraintDescriptionEditable
@available(iOS 9.0, OSX 10.11, *)
@ -229,6 +232,13 @@ internal class ConstraintDescription: ConstraintDescriptionExtendable, Constrain
internal func equalTo(other: View) -> ConstraintDescriptionEditable {
return self.constrainTo(other, relation: .Equal)
}
internal func equalToSuperview() -> ConstraintDescriptionEditable {
guard let superview = fromItem.view?.superview else {
fatalError("equalToSuperview() requires the view have a superview before being set.")
}
return self.equalTo(superview)
}
@available(iOS 7.0, *)
internal func equalTo(other: LayoutSupport) -> ConstraintDescriptionEditable {
return self.constrainTo(other, relation: .Equal)
@ -270,6 +280,13 @@ internal class ConstraintDescription: ConstraintDescriptionExtendable, Constrain
internal func lessThanOrEqualTo(other: View) -> ConstraintDescriptionEditable {
return self.constrainTo(other, relation: .LessThanOrEqualTo)
}
internal func lessThanOrEqualToSuperview() -> ConstraintDescriptionEditable {
guard let superview = fromItem.view?.superview else {
fatalError("lessThanOrEqualToSuperview() requires the view have a superview before being set.")
}
return self.lessThanOrEqualTo(superview)
}
@available(iOS 7.0, *)
internal func lessThanOrEqualTo(other: LayoutSupport) -> ConstraintDescriptionEditable {
return self.constrainTo(other, relation: .LessThanOrEqualTo)
@ -311,6 +328,13 @@ internal class ConstraintDescription: ConstraintDescriptionExtendable, Constrain
internal func greaterThanOrEqualTo(other: View) -> ConstraintDescriptionEditable {
return self.constrainTo(other, relation: .GreaterThanOrEqualTo)
}
internal func greaterThanOrEqualToSuperview() -> ConstraintDescriptionEditable {
guard let superview = fromItem.view?.superview else {
fatalError("greaterThanOrEqualToSuperview() requires the view have a superview before being set.")
}
return self.greaterThanOrEqualTo(superview)
}
@available(iOS 7.0, *)
internal func greaterThanOrEqualTo(other: LayoutSupport) -> ConstraintDescriptionEditable {
return self.constrainTo(other, relation: .GreaterThanOrEqualTo)

29
Tests/Tests.swift
View File

@ -262,4 +262,33 @@ class SnapKitTests: XCTestCase {
XCTAssertEqual(constraints[0].identifier, identifier, "Identifier should be 'Test'")
}
func testSuperviewConstraints() {
let view = View()
container.addSubview(view)
view.snp_makeConstraints { (make) -> Void in
make.top.equalToSuperview().inset(10)
make.bottom.equalToSuperview().inset(10)
}
XCTAssertEqual(container.snp_constraints.count, 2, "Should have 2 constraints")
let constraints = container.snp_constraints as! [NSLayoutConstraint]
XCTAssertEqual(constraints[0].firstAttribute, NSLayoutAttribute.Top, "Should be top")
XCTAssertEqual(constraints[1].firstAttribute, NSLayoutAttribute.Bottom, "Should be bottom")
XCTAssertEqual(constraints[0].secondAttribute, NSLayoutAttribute.Top, "Should be top")
XCTAssertEqual(constraints[1].secondAttribute, NSLayoutAttribute.Bottom, "Should be bottom")
XCTAssertEqual(constraints[0].firstItem as? UIView, view, "Should be added subview")
XCTAssertEqual(constraints[1].firstItem as? UIView, view, "Should be added subview")
XCTAssertEqual(constraints[0].secondItem as? UIView, container, "Should be containerView")
XCTAssertEqual(constraints[1].secondItem as? UIView, container, "Should be containerView")
XCTAssertEqual(constraints[0].constant, 10, "Should be 10")
XCTAssertEqual(constraints[1].constant, -10, "Should be 10")
}
}