setter methods for NSLayoutConstraint constant proxies like offset, centerOffset, insets, sizeOffset.

Examples/Masonry iOS Examples/MASExampleAnimatedView.m

@@ -98,7 +98,7 @@
     int padding = invertedInsets ? 100 : self.padding;
     UIEdgeInsets paddingInsets = UIEdgeInsetsMake(padding, padding, padding, padding);
     for (id<MASConstraint> constraint in self.animatableConstraints) {
-        constraint.insets(paddingInsets);
+        constraint.insets = paddingInsets;
     }
 
     [UIView animateWithDuration:1 animations:^{

Masonry/MASCompositeConstraint.m

@@ -44,36 +44,28 @@
 
 - (id<MASConstraint> (^)(MASEdgeInsets))insets {
     return ^id(MASEdgeInsets insets) {
-        for (id<MASConstraint> constraint in self.childConstraints) {
-            constraint.insets(insets);
-        }
+        self.insets = insets;
         return self;
     };
 }
 
 - (id<MASConstraint> (^)(CGFloat))offset {
     return ^id(CGFloat offset) {
-        for (id<MASConstraint> constraint in self.childConstraints) {
-            constraint.offset(offset);
-        }
+        self.offset = offset;
         return self;
     };
 }
 
 - (id<MASConstraint> (^)(CGSize))sizeOffset {
     return ^id(CGSize offset) {
-        for (id<MASConstraint> constraint in self.childConstraints) {
-            constraint.sizeOffset(offset);
-        }
+        self.sizeOffset = offset;
         return self;
     };
 }
 
 - (id<MASConstraint> (^)(CGPoint))centerOffset {
     return ^id(CGPoint offset) {
-        for (id<MASConstraint> constraint in self.childConstraints) {
-            constraint.centerOffset(offset);
-        }
+        self.centerOffset = offset;
         return self;
     };
 }
@@ -191,6 +183,32 @@
     };
 }
 
+#pragma mark - NSLayoutConstraint constant setters
+
+- (void)setInsets:(UIEdgeInsets)insets {
+    for (id<MASConstraint> constraint in self.childConstraints) {
+        constraint.insets = insets;
+    }
+}
+
+- (void)setOffset:(CGFloat)offset {
+    for (id<MASConstraint> constraint in self.childConstraints) {
+        constraint.offset = offset;
+    }
+}
+
+- (void)setSizeOffset:(CGSize)sizeOffset {
+    for (id<MASConstraint> constraint in self.childConstraints) {
+        constraint.sizeOffset = sizeOffset;
+    }
+}
+
+- (void)setCenterOffset:(CGPoint)centerOffset {
+    for (id<MASConstraint> constraint in self.childConstraints) {
+        constraint.centerOffset = centerOffset;
+    }
+}
+
 #pragma mark - MASConstraint
 
 - (void)install {

Masonry/MASConstraint.h

@@ -17,67 +17,63 @@
  */
 @protocol MASConstraint <NSObject>
 
-/**
- *	Usually MASConstraintMaker but could be a parent MASConstraint
- */
-@property (nonatomic, weak) id<MASConstraintDelegate> delegate;
+// Chaining Support
 
 /**
  *	Modifies the NSLayoutConstraint constant,
  *  only affects MASConstraints in which the first item's NSLayoutAttribute is one of the following 
  *  NSLayoutAttributeTop, NSLayoutAttributeLeft, NSLayoutAttributeBottom, NSLayoutAttributeRight
  */
-@property (nonatomic, copy, readonly) id<MASConstraint> (^insets)(MASEdgeInsets insets);
+- (id<MASConstraint> (^)(MASEdgeInsets insets))insets;
 
 /**
  *	Modifies the NSLayoutConstraint constant,
  *  only affects MASConstraints in which the first item's NSLayoutAttribute is one of the following
  *  NSLayoutAttributeWidth, NSLayoutAttributeHeight
  */
-@property (nonatomic, copy, readonly) id<MASConstraint> (^sizeOffset)(CGSize offset);
+- (id<MASConstraint> (^)(CGSize offset))sizeOffset;
 
 /**
  *	Modifies the NSLayoutConstraint constant,
  *  only affects MASConstraints in which the first item's NSLayoutAttribute is one of the following
  *  NSLayoutAttributeCenterX, NSLayoutAttributeCenterY
  */
-@property (nonatomic, copy, readonly) id<MASConstraint> (^centerOffset)(CGPoint offset);
-
+- (id<MASConstraint> (^)(CGPoint offset))centerOffset;
 
 /**
  *	Modifies the NSLayoutConstraint constant
  */
-@property (nonatomic, copy, readonly) id<MASConstraint> (^offset)(CGFloat offset);
+- (id<MASConstraint> (^)(CGFloat offset))offset;
 
 /**
  *	Sets the NSLayoutConstraint multiplier property
  */
-@property (nonatomic, copy, readonly) id<MASConstraint> (^multipliedBy)(CGFloat multiplier);
+- (id<MASConstraint> (^)(CGFloat multiplier))multipliedBy;
 
 /**
  *	Sets the NSLayoutConstraint multiplier to 1.0/dividedBy
  */
-@property (nonatomic, copy, readonly) id<MASConstraint> (^dividedBy)(CGFloat divider);
+- (id<MASConstraint> (^)(CGFloat divider))dividedBy;
 
 /**
  *	Sets the NSLayoutConstraint priority to a float or MASLayoutPriority
  */
-@property (nonatomic, copy, readonly) id<MASConstraint> (^priority)(MASLayoutPriority priority);
+- (id<MASConstraint> (^)(MASLayoutPriority priority))priority;
 
 /**
  *	Sets the NSLayoutConstraint priority to MASLayoutPriorityLow
  */
-@property (nonatomic, copy, readonly) id<MASConstraint> (^priorityLow)();
+- (id<MASConstraint> (^)())priorityLow;
 
 /**
  *	Sets the NSLayoutConstraint priority to MASLayoutPriorityMedium
  */
-@property (nonatomic, copy, readonly) id<MASConstraint> (^priorityMedium)();
+- (id<MASConstraint> (^)())priorityMedium;
 
 /**
  *	Sets the NSLayoutConstraint priority to MASLayoutPriorityHigh
  */
-@property (nonatomic, copy, readonly) id<MASConstraint> (^priorityHigh)();
+- (id<MASConstraint> (^)())priorityHigh;
 
 /**
  *	Sets the constraint relation to NSLayoutRelationEqual
@@ -85,7 +81,7 @@
  *    MASViewAttribute, UIView, NSNumber, NSArray
  *  see readme for more details.
  */
-@property (nonatomic, copy, readonly) id<MASConstraint> (^equalTo)(id attr);
+- (id<MASConstraint> (^)(id attr))equalTo;
 
 /**
  *	Sets the constraint relation to NSLayoutRelationGreaterThanOrEqual
@@ -93,7 +89,7 @@
  *    MASViewAttribute, UIView, NSNumber, NSArray
  *  see readme for more details.
  */
-@property (nonatomic, copy, readonly) id<MASConstraint> (^greaterThanOrEqualTo)(id attr);
+- (id<MASConstraint> (^)(id attr))greaterThanOrEqualTo;
 
 /**
  *	Sets the constraint relation to NSLayoutRelationLessThanOrEqual
@@ -101,17 +97,50 @@
  *    MASViewAttribute, UIView, NSNumber, NSArray
  *  see readme for more details.
  */
-@property (nonatomic, copy, readonly) id<MASConstraint> (^lessThanOrEqualTo)(id attr);
+- (id<MASConstraint> (^)(id attr))lessThanOrEqualTo;
 
 /**
  *	optional semantic property which has no effect but improves the readability of constraint
  */
-@property (nonatomic, copy, readonly) id<MASConstraint> with;
+- (id<MASConstraint>)with;
 
 /**
  *	Sets the constraint debug name
  */
-@property (nonatomic, copy, readonly) id<MASConstraint> (^key)(id key);
+- (id<MASConstraint> (^)(id key))key;
+
+
+// NSLayoutConstraint constant Setters
+// for use outside of mas_updateConstraints/mas_makeConstraints blocks
+
+/**
+ *	Modifies the NSLayoutConstraint constant,
+ *  only affects MASConstraints in which the first item's NSLayoutAttribute is one of the following
+ *  NSLayoutAttributeTop, NSLayoutAttributeLeft, NSLayoutAttributeBottom, NSLayoutAttributeRight
+ */
+- (void)setInsets:(MASEdgeInsets)insets;
+
+/**
+ *	Modifies the NSLayoutConstraint constant,
+ *  only affects MASConstraints in which the first item's NSLayoutAttribute is one of the following
+ *  NSLayoutAttributeWidth, NSLayoutAttributeHeight
+ */
+- (void)setSizeOffset:(CGSize)sizeOffset;
+
+/**
+ *	Modifies the NSLayoutConstraint constant,
+ *  only affects MASConstraints in which the first item's NSLayoutAttribute is one of the following
+ *  NSLayoutAttributeCenterX, NSLayoutAttributeCenterY
+ */
+- (void)setCenterOffset:(CGPoint)centerOffset;
+
+/**
+ *	Modifies the NSLayoutConstraint constant
+ */
+- (void)setOffset:(CGFloat)offset;
+
+
+// NSLayoutConstraint Installation support
 
 #if TARGET_OS_MAC && !TARGET_OS_IPHONE
 /**
@@ -126,7 +155,12 @@
 @property (nonatomic, assign) BOOL updateExisting;
 
 /**
- *	Creates a NSLayoutConstraint. The constraint is installed to the first view or the or the closest common superview of the first and second view. 
+ *	Usually MASConstraintMaker but could be a parent MASConstraint
+ */
+@property (nonatomic, weak) id<MASConstraintDelegate> delegate;
+
+/**
+ *	Creates a NSLayoutConstraint and adds it to the appropriate view.
  */
 - (void)install;
 

Masonry/MASViewConstraint.m

@@ -95,64 +95,28 @@
 
 - (id<MASConstraint> (^)(MASEdgeInsets))insets {
     return ^id(MASEdgeInsets insets){
-        NSLayoutAttribute layoutAttribute = self.firstViewAttribute.layoutAttribute;
-        switch (layoutAttribute) {
-            case NSLayoutAttributeLeft:
-                self.layoutConstant = insets.left;
-                break;
-            case NSLayoutAttributeTop:
-                self.layoutConstant = insets.top;
-                break;
-            case NSLayoutAttributeBottom:
-                self.layoutConstant = -insets.bottom;
-                break;
-            case NSLayoutAttributeRight:
-                self.layoutConstant = -insets.right;
-                break;
-            default:
-                break;
-        }
+        self.insets = insets;
         return self;
     };
 }
 
 - (id<MASConstraint> (^)(CGSize))sizeOffset {
     return ^id(CGSize offset) {
-        NSLayoutAttribute layoutAttribute = self.firstViewAttribute.layoutAttribute;
-        switch (layoutAttribute) {
-            case NSLayoutAttributeWidth:
-                self.layoutConstant = offset.width;
-                break;
-            case NSLayoutAttributeHeight:
-                self.layoutConstant = offset.height;
-                break;
-            default:
-                break;
-        }
+        self.sizeOffset = offset;
         return self;
     };
 }
 
 - (id<MASConstraint> (^)(CGPoint))centerOffset {
     return ^id(CGPoint offset) {
-        NSLayoutAttribute layoutAttribute = self.firstViewAttribute.layoutAttribute;
-        switch (layoutAttribute) {
-            case NSLayoutAttributeCenterX:
-                self.layoutConstant = offset.x;
-                break;
-            case NSLayoutAttributeCenterY:
-                self.layoutConstant = offset.y;
-                break;
-            default:
-                break;
-        }
+        self.centerOffset = offset;
         return self;
     };
 }
 
 - (id<MASConstraint> (^)(CGFloat))offset {
     return ^id(CGFloat offset){
-        self.layoutConstant = offset;
+        self.offset = offset;
         return self;
     };
 }
@@ -277,6 +241,60 @@
     };
 }
 
+#pragma mark - NSLayoutConstraint constant setters
+
+- (void)setInsets:(UIEdgeInsets)insets {
+    NSLayoutAttribute layoutAttribute = self.firstViewAttribute.layoutAttribute;
+    switch (layoutAttribute) {
+        case NSLayoutAttributeLeft:
+            self.layoutConstant = insets.left;
+            break;
+        case NSLayoutAttributeTop:
+            self.layoutConstant = insets.top;
+            break;
+        case NSLayoutAttributeBottom:
+            self.layoutConstant = -insets.bottom;
+            break;
+        case NSLayoutAttributeRight:
+            self.layoutConstant = -insets.right;
+            break;
+        default:
+            break;
+    }
+}
+
+- (void)setOffset:(CGFloat)offset {
+    self.layoutConstant = offset;
+}
+
+- (void)setSizeOffset:(CGSize)sizeOffset {
+    NSLayoutAttribute layoutAttribute = self.firstViewAttribute.layoutAttribute;
+    switch (layoutAttribute) {
+        case NSLayoutAttributeWidth:
+            self.layoutConstant = sizeOffset.width;
+            break;
+        case NSLayoutAttributeHeight:
+            self.layoutConstant = sizeOffset.height;
+            break;
+        default:
+            break;
+    }
+}
+
+- (void)setCenterOffset:(CGPoint)centerOffset {
+    NSLayoutAttribute layoutAttribute = self.firstViewAttribute.layoutAttribute;
+    switch (layoutAttribute) {
+        case NSLayoutAttributeCenterX:
+            self.layoutConstant = centerOffset.x;
+            break;
+        case NSLayoutAttributeCenterY:
+            self.layoutConstant = centerOffset.y;
+            break;
+        default:
+            break;
+    }
+}
+
 #pragma mark - MASConstraint
 
 - (void)install {

Tests/Masonry Tests.xcodeproj/project.pbxproj

@@ -28,7 +28,6 @@
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 		DD717A5718442EC600FAA7A8 /* View+MASAdditionsSpec.m in Sources */ = {isa = PBXBuildFile; fileRef = DD717A5018442EC600FAA7A8 /* View+MASAdditionsSpec.m */; };
 		DD717A631844303200FAA7A8 /* GcovTestObserver.m in Sources */ = {isa = PBXBuildFile; fileRef = DD717A5F1844303200FAA7A8 /* GcovTestObserver.m */; };
-		DD717A641844303200FAA7A8 /* MasonryTests-Info.plist in Resources */ = {isa = PBXBuildFile; fileRef = DD717A601844303200FAA7A8 /* MasonryTests-Info.plist */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -265,7 +264,6 @@
 			isa = PBXResourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				DD717A641844303200FAA7A8 /* MasonryTests-Info.plist in Resources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};