Add ability to chain different view attributes

[cloudkite]

Composites are great for defining multiple attributes at once. The following example makes top, left, bottom, right equal to superview.

make.edges.equalTo(superview).insets(padding);

However if only three of the sides are equal to superview then we need to repeat quite a bit of code

make.left.equalTo(superview).insets(padding);
make.right.equalTo(superview).insets(padding);
make.bottom.equalTo(superview).insets(padding);
// top needs to be equal to `otherView`
make.top.equalTo(otherView).insets(padding);

This PR makes it possible to chain view attributes to improve readability

make.left.right.and.bottom.equalTo(superview).insets(padding);
make.top.equalTo(otherView).insets(padding);

TODO

• Write tests
• Update readme
• Update changelog
• Update podspec

[reejosamuel]

Chaining is awesome much required, everytime i wanted equal width x height
would be great if you can update the podspec for this change.

[nickynick]

@cloudkite Hey! This thing has been bothering me a bit too, and I just had another idea. What if we had something like this:

make.edges.equalTo(superview).with.insets(UIEdgeInsetsMake(MASNoInset, 0, 0, 0));

MASNoInset would be a predefined constant, much like UITableViewAutomaticDimension or UIViewNoIntrinsicMetric. What do you think? :)

[cloudkite]

@reejosamuel Its coming soon, I just need to get the free time to add tests and update readmes etc. @nickynick Thanks for the suggestion, I think that could get confusing as insets is currently used for setting constants on constraints and not for excluding/including constraints.

It also limits the reusability of variables, ie if you need to reuse an existing UIEdgeInsets you would need todo:

UIEdgeInsets padding = UIEdgeInsetsMake(20, 10, 20, 10);
make.edges.equalTo(superview).with.insets(UIEdgeInsetsMake(MASNoInset, padding.left, padding.bottom, padding.right));

As opposed to the syntax proposed in this PR:

UIEdgeInsets padding = UIEdgeInsetsMake(20, 10, 20, 10);
make.left.bottom.right.equalTo(superview).with.insets(padding);

[nickynick]

@cloudkite Yeah, I agree. To be honest, I was not aware you could do this: make.top.equalTo(otherView).insets(padding); :)