* fix(action-bar): #5743 navController may be null
From my own Crashlytics:
`stderr: file:///app/vendor.js:1:860568: JS ERROR TypeError: null is not an object (evaluating 'a.viewControllers')`
```
file:///app/vendor.js:1:860489
var l,p=a.viewControllers.indexOfObject(n);if(p>0&&p<a.viewControllers.count&&(t=a.viewControllers[p-1]),t)
```
which corresponds to:
2fc1d8a8d4/tns-core-modules/ui/action-bar/action-bar.ios.ts (L132)
further up `navController` is checked for truthiness:
2fc1d8a8d4/tns-core-modules/ui/action-bar/action-bar.ios.ts (L119)
So applying same logic.
* Adjusted per request
iOS layout positioning now respects native properties like automaticallyAdjustsScrollViewInsets, edgesForExtendedLayout, extendedLayoutIncludesOpaqueBars, navigationBar.translucent, tabBar.translucent
Removed frame-tests.ios.ts - those tests are now invalid
Added new layout tests inside page-tests.ios.ts
Commented few asserts in scroll-view-tests
View now expose ios namespace with layoutView method and UILayoutViewController used by page, tab-view and application module
ViewBase now expose viewController property that should be set from all widgets that are using viewcontrollers internally (like Page, Frame, TabView)
ViewBase now sets ios property to either the view returned from createNativeView or to nativeViewProptected
fragment.transitions now use animation/transition start to add fragments to waitingQueue. Before we did it manually in navigate/goBack. This way we can reuse the fragment.transition when calling showDialog. Also when animation/transition ends we check the animation/transition to see if this fragment should be set as current.
Frame expose new loadViewFromEntry method (to load a view from URI)
Frame navigation happens once frame is loaded
Frame now supports Page as a child in XML
Fixed GridLayout row, rowSpan, column, columnSpan properties type
Fixed bug in GridLayout where add/remove of columns/rows won't update the internal state of the grid (backport from android when GridLayout is recycled)
ListView will no longer invalidate layout when cell is removed
Fixed bug in ScrollView ios where effectiveMinWidth/Height was multiplied to density (it is already on device pixels so no need to multiply)
TabView android now calls loaded only on the selected child (not all)
Core refactoring
* Image corners were blinking in #4322 and CSS border will now draw non uniform corner radiuses if the border color is uniform
* Implement per-side corner radiuses for iOS
* Update stretch-mode example
* Update matrix-mode example
* Update image resources
* Add clipping for non uniform radii without border width, don't throw for missing image resources in css
* Layout round instead of cailing
Add helper method to layout module to convert to/from dips to px and measure the native view
whiteSpace affects layout added for iOS
Fix bug in switch onMeasure implementation
Fix bug in cssValueToDevicePixels iOS implementation
ActionBar for iOS is measured with AT_MOST modifier
* Fix switch measure routine
* Fix action-bar systemIcon
Fix CSS applying
* refactoring
* fix console
* remove StyleScope import - it is private and cannot be imported in public .d.ts
UIBarButtonItem weren't created with a title/text so VoiceOver couldn't
know what to reads. This marks the element as an AccessibilityElement
and sets an accessibilityLabel.
Less than 30 erros left, let's hope it still works
Added lib.*.d.ts from typescript, removed lib and dom stuff, added by hand XHR, alert etc. .d.ts-es for polyfills
Roll back some changes involved in separating UIEvent for dom and ios
Test combined dts-es will now use lib, while internally we will not to avoid UIEvent conflict with dom stuff
