Expose MASConstraintMaker's view property

[erichoracek]

First off, thanks for the amazing library! You've successfully made writing autolayout code a breeze.

It would be helpful to have MASConstraintMaker's view property exposed so that the following code could be written:

[view mas_makeConstraints:^(MASConstraintMaker *make) {
    make.edges.equalTo(make.view.superview);
}];

This way, constraints could be defined relative to the view's superview, regardless of if the superview is changed down the line in your implementation.

Additionally, this means that copy-pasting layout code when writing it would result in less occurrences of:

[view1 mas_makeConstraints:^(MASConstraintMaker *make) {
    make.edges.equalTo(view1.superview);
}];
[view2 mas_makeConstraints:^(MASConstraintMaker *make) {
    make.edges.equalTo(view1.superview);
}];

Where view2 is constrained to view1's superview, which is an easy to miss but hard to debug error.

[nickynick]

I thought it'd be worth to point out that for a single edge, you can write like this: make.top.equalTo(@10);. This is identical to make.top.equalTo(view.superview).with.offset(10);.

Perhaps it would be nice be able to do the same with edges/sizes, something like this: make.edges.equalTo([NSValue valueWithUIEdgeInsets:UIEdgeInsetsZero]);. Or, much better, this: make.edges.equalTo(UIEdgeInsetsZero);.

I really like how auto-boxing is implemented in Expecta, and I think we could borrow it for Masonry. Just look how beautiful this would be:

make.height.equalTo(20);
make.size.equalTo(CGSizeMake(50, 100));
make.edges.equalTo(UIEdgeInsetsMake(10, 0, 10, 0));

In fact, I'm willing to give it a shot if it's fine with you @cloudkite :)

[erichoracek]

@nickynick Seems reasonable as a fix for this issue—it's much more semantic and overall simpler than my suggestion. Especially if it can be done without breaking the API. 👍

[cloudkite]

@eric-horacek those changes are now in the latest cocoapods release. Closing but if it doesn't cover your use case or you still think its worthwhile please reopen, thanks!