Merge pull request #3636 from eimantas/nsview-bindings

Add bindings for `NSView.alphaValue`

CHANGELOG.md

@@ -1,5 +1,6 @@
 # master
 *Please put new entries at the top.
+1. Add extension for `alphaValue` property of `NSView` class. (#3636, kuds to @eimantas)
 1. Add extension for `isHidden` property of `NSView` class. (#3634, kudos to @eimantas)
 
 # 8.0.2

ReactiveCocoa/AppKit/NSView.swift

@@ -7,4 +7,9 @@ extension Reactive where Base: NSView {
 	public var isHidden: BindingTarget<Bool> {
 		return makeBindingTarget { $0.isHidden = $1 }
 	}
+
+	/// Sets the alpha value of the view.
+	public var alphaValue: BindingTarget<CGFloat> {
+		return makeBindingTarget { $0.alphaValue = $1 }
+	}
 }

ReactiveCocoaTests/AppKit/NSViewSpec.swift

@@ -16,12 +16,22 @@ class NSViewSpec: QuickSpec {
 
 			it("should allow binding of `isHidden` property") {
 				let (hSignal, hSink) = Signal<Bool, NoError>.pipe()
-				expect(view.isHidden).to(beFalse())
+				expect(view.isHidden) == false
 
 				view.reactive.isHidden <~ hSignal
 				hSink.send(value: true)
 
-				expect(view.isHidden).to(beTrue())
+				expect(view.isHidden) == true
+			}
+
+			it("should allow binding of `alphaValue` property") {
+				let (avSignal, avSink) = Signal<CGFloat, NoError>.pipe()
+				expect(view.alphaValue) == 1.0
+
+				view.reactive.alphaValue <~ avSignal
+				avSink.send(value: 0.5)
+
+				expect(view.alphaValue) == 0.5
 			}
 		}
 	}