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fix(ui5-side-navigation): group as first item works without error #11406

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18 changes: 18 additions & 0 deletions packages/fiori/src/SideNavigation.ts
Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,7 @@ import { isInstanceOfSideNavigationSelectableItemBase } from "./SideNavigationSe
import { isInstanceOfSideNavigationItemBase } from "./SideNavigationItemBase.js";
import type SideNavigationSelectableItemBase from "./SideNavigationSelectableItemBase.js";
import { isInstanceOfSideNavigationItem } from "./SideNavigationItem.js";
import { isInstanceOfSideNavigationGroup } from "./SideNavigationGroup.js";
import type SideNavigationItem from "./SideNavigationItem.js";
import type SideNavigationSubItem from "./SideNavigationSubItem.js";
import type SideNavigationGroup from "./SideNavigationGroup.js";
Expand Down Expand Up @@ -242,6 +243,23 @@ class SideNavigation extends UI5Element {
item.inPopover = this.inPopover;
item.sideNavigation = this;
});

this.initGroupsSettings(this.items);
this.initGroupsSettings(this.fixedItems);
}

initGroupsSettings(items: Array<SideNavigationItemBase>) {
let isPreviousItemGroup = false;

items.forEach(item => {
const isGroup = isInstanceOfSideNavigationGroup(item);

if (isGroup && isPreviousItemGroup) {
item.belowGroup = true;
}

isPreviousItemGroup = isGroup;
});
}

_onAfterPopoverOpen() {
Expand Down
9 changes: 4 additions & 5 deletions packages/fiori/src/SideNavigationGroup.ts
Original file line number Diff line number Diff line change
Expand Up @@ -58,6 +58,9 @@ class SideNavigationGroup extends SideNavigationItemBase {
@property({ type: Boolean })
expanded = false;

@property({ type: Boolean })
belowGroup = false;

/**
* Defines nested items by passing `ui5-side-navigation-item` to the default slot.
*
Expand Down Expand Up @@ -123,11 +126,7 @@ class SideNavigationGroup extends SideNavigationItemBase {
}

get belowGroupClassName() {
if (isInstanceOfSideNavigationGroup(this.previousElementSibling)) {
return "ui5-sn-item-group-below-group";
}

return "";
return this.belowGroup ? "ui5-sn-item-group-below-group" : "";
}

get accDescription() {
Expand Down
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