Class HeaderTabsNavRenderer

java.lang.Object

org.vaadin.addons.joelpop.appnavlayout.ui.layout.appnav.HeaderTabsNavRenderer

All Implemented Interfaces:

NavRenderer

public class HeaderTabsNavRenderer
extends Object
implements NavRenderer

An alternative NavRenderer for NavType.HEADER — root sections rendered as a Tabs strip spanning the header; selecting a leaf navigates directly, selecting a group only reveals that root's own children in the shared SecondaryTabBar drill-down row beneath, never navigating on its own — the same non-committal rule the drill-down row itself applies to a group tab of its own (see SecondaryTabBar(boolean, boolean)). Losing focus on the whole nav hierarchy — either row — without ever landing on a leaf restores both to whatever the real current view actually is.

Constructor Summary

Constructors

Constructor	Description
HeaderTabsNavRenderer()

Method Summary

Modifier and Type	Method	Description
NavType	navType()	The chrome this renderer requires — determines which NavStrategy gets built for whichever scenario this renderer is configured for.
void	render(NavRenderContext context)	Builds or updates this renderer's content for the current nav state.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface NavRenderer

railWidth

Constructor Details

HeaderTabsNavRenderer

public HeaderTabsNavRenderer()

Method Details

navType

public NavType navType()

Description copied from interface: NavRenderer

The chrome this renderer requires — determines which NavStrategy gets built for whichever scenario this renderer is configured for. Not a free choice: a renderer's NavRenderer.render(NavRenderContext) implementation already assumes one specific NavSlots accessor is live (e.g. SideRailNavRenderer only ever populates NavSlots.sideRail()), and that slot is only live under the matching NavType's strategy. This method makes that assumption explicit instead of leaving it to silently mismatch — a renderer configured for a scenario whose resolved chrome doesn't match its own navType() would otherwise render into a slot that's never attached to the page, with nothing to indicate why.

Specified by:

navType in interface NavRenderer

render

public void render(NavRenderContext context)

Description copied from interface: NavRenderer

Builds or updates this renderer's content for the current nav state. Called once when this scenario becomes active, again on every completed navigation, and again whenever nav configuration changes (grouper swap, path matcher change). The implementation decides which slot(s) in context.slots() to populate and how — including any overflow or drill-down scaffolding it needs (a "More…" popover, a chevron, a swipeable container, etc).

Specified by:

render in interface NavRenderer