Default is public. Class methods may be defined as public, private, or protected. Methods declared without any explicit visibility keyword are defined as public. http://www.php.net/manual/en/language.oop5.visibility.php
if [DIV] is an element then [DIV].style.visibility=’visible’ OR [DIV].style.visibility=’hidden’
The key difference seems to be that hidden elements are always hidden regardless of the presentation: The hidden attribute must not be used to hide content that could legitimately be shown in another presentation. For example, it is incorrect to use hidden to hide panels in a tabbed dialog, because the tabbed interface is merely … Read more
Instead of inverting, you can achieve the same goal by using a generic IValueConverter implementation that can convert a Boolean value to configurable target values for true and false. Below is one such implementation: public class BooleanConverter<T> : IValueConverter { public BooleanConverter(T trueValue, T falseValue) { True = trueValue; False = falseValue; } public T … Read more
This is a bit of a cheat but I just set a default style and then overrode it using a DataTrigger if the value is null… <Style> <!– Highlight for Reviewed (Default) –> <Setter Property=”Control.Background” Value=”PaleGreen” /> <Style.Triggers> <!– Highlight for Not Reviewed –> <DataTrigger Binding=”{Binding Path=REVIEWEDBY}” Value=”{x:Null}”> <Setter Property=”Control.Background” Value=”LightIndianRed” /> </DataTrigger> </Style.Triggers> </Style>
The difference is that Visibility.Hidden hides the control, but reserves the space it occupies in the layout. So it renders whitespace instead of the control. Visibilty.Collapsed does not render the control and does not reserve the whitespace. The space the control would take is ‘collapsed’, hence the name. The exact text from the MSDN: Collapsed: … Read more
You could make your own plugins. jQuery.fn.visible = function() { return this.css(‘visibility’, ‘visible’); }; jQuery.fn.invisible = function() { return this.css(‘visibility’, ‘hidden’); }; jQuery.fn.visibilityToggle = function() { return this.css(‘visibility’, function(i, visibility) { return (visibility == ‘visible’) ? ‘hidden’ : ‘visible’; }); }; If you want to overload the original jQuery toggle(), which I don’t recommend… !(function($) … Read more
NEW ANSWER added Jan 25th 2012 Since writing the below answer, someone clued me in to the existence of ViewTreeObserver and friends, APIs which have been lurking in the SDK since version 1. Rather than requiring a custom Layout type, a much simpler solution is to give your activity’s root view a known ID, say … Read more
display:none means that the tag in question will not appear on the page at all (although you can still interact with it through the dom). There will be no space allocated for it between the other tags. visibility:hidden means that unlike display:none, the tag is not visible, but space is allocated for it on the … Read more