The KVO for `safeAreaInset` can be invoked even when new and old values
are the same value so that the surface of a floating panel sometimes
jumps in dragging by an unexpected layout update called from a
`safeAreaInset` update.
This solves the problem that a panel's layout and dragging can be
inappropriate. The root cause is that a value of the `safeAreaInsets`
is sometimes different from an actual value referenced from Auto Layout.
It's led by the design that the `safeAreaInsets` is defined as a stored
property. Therefore this commit resolves the issue.
On iOS 10, there is a case when a floating panel is updated by a
different position(the previous position) from the target position in
animating. This is because `FloatingPanelController` calls
`update(safeAreaInsets:)` in `viewDidLayoutSubviews()` unexpectedly.
Typical use case is :
```
let floatingVC = FloatingPanelController()
floatingVC.delegate = self
```
This PR allows to set the delegate straight away by using `let floatingVC = FloatingPanelController(self)`
Its true reason is that the setup code that fetches behavior / layout through delegate is called without the delegate being set is useless on `init`ing.
Another implementation could be observing the `didSet` event on delegate to do the `setUp` for `FloatingPanel`
* `vc.view.bounds.height` causes some layout problems. This change
makes a content view layout more robust.
* Enable to configure the content-hugging and compression-resistance
- Update README
- Remove FloatingPanelSurfaceWrapperView
- Remove content wrapper view of FloatingPanelSurfaceView
- Remove {setUp,tearDown}Views in FloatingPanel
- Modify timing to call FloatingPanelLayoutAdapter.checkLayoutConsistance()
- Fix invalid surface height on orientation change
- Fix a layout problem on SafeArea.Top
- Fix invalid top inset of safe area on a navigation bar with search bar
- Fix content offsets of a tracking scroll view
- Fix the content offsets on orientation change(Regression)
- Fix FloatingPanelPresentationController
- Fix intrinsic height handling
- Reduce re-rendering the surface view unexpectedly
Shin Yamamoto
Gunnar Herzog
Damiaan Twelker
Cedric Gatay
Derek Schade
Evgeniy Branitsky
Ortwin Gentz