Do you maybe use animations to show/hide the views? I get this behaviour when I use animations that have android:fillEnabled=”true” android:fillAfter=”true” Don’t understand it, and seems like a bug – if I use animations without fillEnabled/fillAfter, all works as expected…
For models, the idea is that the public methods are the public interface of the class. Public methods are intended to be used by other objects, while protected/private methods are to be hidden from the outside. This is the same practice as in other object-oriented languages. For controllers and tests, just do as you please. … Read more
A reflow computes the layout of the page. A reflow on an element recomputes the dimensions and position of the element, and it also triggers further reflows on that element’s children, ancestors and elements that appear after it in the DOM. Then it calls a final repaint. Reflowing is very expensive, but unfortunately it can … Read more
First of all, DataGridTextColumn (or any other supported dataGrid column) does not lie in the Visual tree of the DataGrid. Hence, by default it doesn’t inherit the DataContext of the DataGrid. However, it works for Binding DP only and for no other DP’s on DataGridColumn. Since they don’t lie in the same VisualTree, any attempt … Read more
For anyone else that ends up here: To determine if a UIView is onscreen somewhere, rather than checking superview != nil, it is better to check if window != nil. In the former case, it is possible that the view has a superview but that the superview is not on screen: if (view.window != nil) … Read more
You can even do something more similar to “emulating” usage of public constructor while having private constructor. class Foo private constructor(val someData: Data) { companion object { operator fun invoke(): Foo { // do stuff return Foo(someData) } } } //usage Foo() //even though it looks like constructor, it is a function call
Kotlin, compared to Java, seems to rely on packages model to a lesser degree (e.g. directories structure is not bound to packages). Instead, Kotlin offers internal visibility, which is designed for modular project architecture. Using it, you can encapsulate a part of your code inside a separate module. So, on top level declarations you can … Read more
To animate layout changes, you can add the following attribute to your LinearLayout android:animateLayoutChanges=”true” and it will animate changes automatically for you. For information, if android:animateLayoutChanges=”true” is used, then custom animation via anim xml will not work.
For the point 2. I see that no one has suggested to use document.elementFromPoint(x,y), to me it is the fastest way to test if an element is nested or hidden by another. You can pass the offsets of the targetted element to the function. Here’s PPK test page on elementFromPoint. From MDN’s documentation: The elementFromPoint() … Read more
Apparently you can just pass a boolean to the toggle function $element.toggle(shouldElementBeVisible)