Support spatial-navigation-action CSS Property
#171
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Add spatial-navigation-behavior CSS Property
navbeforefocus and navnotarget event are cancelable, but the previous polyfill didn't support to cancel them. The canceling process of those events are added in the processing model.
But why? why it doesn't work??
The demo only moves focus (don't manual scrolling), but it caused the scrolling at the end of the processing model. Therefore fix this undesirable behavior.
Simple version of scroller demo
added 17 commits
March 19, 2019 14:36
Add the demo for introducing 'spatial-navigation-action' css property
Add spatial-navigation-action CSS property
* Use event handler * Minor : use 'action' instead of 'behavior'
Followed by the latest spec, (https://drafts.csswg.org/css-nav-1/#propdef-spatial-navigation-action) the `spatial-navigation-action` shouldn't be inherited.
* Add the meaningless text inside the scroller to verify the 'focus' value works properly * If 'focus' is given to `spatial-navigation-action`, "spatnav only moves focus" (no scrolling)
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spatial-navigation-actionCSS Property--spatial-navigation-actionCSS Custom propertygetCSSSpatNavAction(element)functionfocusOnly()function for implementing behavior whenspatial-navigation-action: focusnavbeforescrollNavigation Eventspatial-navigation-actionworksspatial-navigation-actionworks