Fix layer group expansion state after deletion (#2146)

Deleting a layer changes the starting indices of later groups, so their
stored expansion state no longer matches. Preserve that state through
surviving layer IDs when rebuilding the group keys.

This keeps expanded groups open after deleting an earlier layer or the
first layer of a group. Separate groups with the same prefix retain
their own states; if deletion joins two groups, the merged group stays
expanded when either was expanded.

- Fixes #1781.

Adds five deletion regression tests, a small style fixture, and a
changelog entry.

Validation:

- All 33 layer-list E2E tests and 50 unit tests pass.
- Lint and the production build, including TypeScript checking, pass.
- Manually checked OSM Liberty: all 15 groups remain expanded after
deleting the background layer.
- The full E2E suite reports 160 passing tests and one failure in
`modals > open > upload` (`Could not get styleItem from localStorage`).
The same failure reproduces with the original production code restored.

---------

Co-authored-by: Harel M <harel.mazor@gmail.com>
This commit is contained in:
Nikita Maximilian Grimm
2026-09-08 20:33:00 +02:00
committed by GitHub
parent 0a4c1710e2
commit 1301dc03e7
5 changed files with 137 additions and 4 deletions
+16
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@@ -0,0 +1,16 @@
{
"version": 8,
"name": "Grouped layers",
"sources": {},
"layers": [
{ "id": "background", "type": "background" },
{ "id": "park-a", "type": "background" },
{ "id": "park-b", "type": "background" },
{ "id": "park-c", "type": "background" },
{ "id": "road", "type": "background" },
{ "id": "park-d", "type": "background" },
{ "id": "park-e", "type": "background" },
{ "id": "water-a", "type": "background" },
{ "id": "water-b", "type": "background" }
]
}
+69
View File
@@ -306,6 +306,75 @@ describe("layers list", () => {
});
describe("groups", () => {
for (const control of ["menu", "trash"] as const) {
describe(`after deletion using ${control}`, () => {
beforeEach(async () => {
await when.setStyle("grouped_layers");
});
test("keeps all groups expanded when an earlier layer is deleted", async () => {
await when.click("skip-target-layer-list");
await then(get.elementByTestId("layer-list-item:park-b")).shouldBeVisible();
await when.deleteLayer("background", control);
await then(get.elementByTestId("layer-list-item:background")).shouldNotExist();
await then(get.elementByTestId("layer-list-group:park-0")).shouldExist();
await expect(get.elementByTestId("layer-list-group:water-6").getByRole("button")).toHaveAttribute("aria-expanded", "true");
await then(get.elementByTestId("layer-list-item:park-b")).shouldBeVisible();
await then(get.elementByTestId("layer-list-item:park-e")).shouldBeVisible();
await then(get.elementByTestId("layer-list-item:water-b")).shouldBeVisible();
});
test("preserves separate states for groups with the same prefix", async () => {
await when.click("layer-list-group:park-1");
await when.deleteLayer("background", control);
await then(get.elementByTestId("layer-list-group:park-0")).shouldExist();
await when.click("layer-list-item:road");
await expect(get.elementByTestId("layer-list-group:park-0").getByRole("button")).toHaveAttribute("aria-expanded", "true");
await expect(get.elementByTestId("layer-list-group:park-4").getByRole("button")).toHaveAttribute("aria-expanded", "false");
await then(get.elementByTestId("layer-list-item:park-b")).shouldBeVisible();
await then(get.elementByTestId("layer-list-item:park-e")).shouldNotBeVisible();
});
test("keeps a group expanded when its first layer is deleted", async () => {
await when.click("layer-list-group:park-1");
await when.deleteLayer("park-a", control);
await then(get.elementByTestId("layer-list-item:park-a")).shouldNotExist();
await when.click("layer-list-item:road");
await expect(get.elementByTestId("layer-list-group:park-1").getByRole("button")).toHaveAttribute("aria-expanded", "true");
await then(get.elementByTestId("layer-list-item:park-c")).shouldBeVisible();
});
for (const expandedGroup of ["park-1", "park-5"]) {
test(`keeps a merged group expanded when ${expandedGroup} was expanded`, async () => {
await when.click("layer-list-group:" + expandedGroup);
await when.deleteLayer("road", control);
await then(get.elementByTestId("layer-list-item:road")).shouldNotExist();
await expect(get.elementByTestId("layer-list-group:park-1").getByRole("button")).toHaveAttribute("aria-expanded", "true");
await then(get.elementByTestId("layer-list-item:park-b")).shouldBeVisible();
await then(get.elementByTestId("layer-list-item:park-e")).shouldBeVisible();
});
}
test("keeps a merged group collapsed when both groups were collapsed", async () => {
await when.deleteLayer("road", control);
await then(get.elementByTestId("layer-list-item:road")).shouldNotExist();
await when.click("layer-list-item:background");
await expect(get.elementByTestId("layer-list-group:park-1").getByRole("button")).toHaveAttribute("aria-expanded", "false");
await then(get.elementByTestId("layer-list-item:park-b")).shouldNotBeVisible();
await then(get.elementByTestId("layer-list-item:park-e")).shouldNotBeVisible();
});
test("preserves later groups after deleting an entire group", async () => {
await when.click("skip-target-layer-list");
await when.deleteLayer("park-a", control);
await when.deleteLayer("park-b", control);
await when.deleteLayer("park-c", control);
await expect(get.elementByTestId("layer-list-group:water-4").getByRole("button")).toHaveAttribute("aria-expanded", "true");
await then(get.elementByTestId("layer-list-item:water-b")).shouldBeVisible();
});
});
}
test("simple", async () => {
await when.setStyle("geojson");
+15
View File
@@ -39,6 +39,7 @@ export class MaputnikDriver {
"example-style-with-zoom-7-and-center-0-51.json",
"example-style-with-zoom-5-and-center-50-50.json",
"access-token-style.json",
"grouped-layers-style.json",
];
for (const fixture of styleFixtures) {
await this.helper.given.interceptAndMockResponse({
@@ -63,6 +64,18 @@ export class MaputnikDriver {
modal: this.modalDriver.when,
deleteLayer: async (id: string, control: "menu" | "trash" = "menu") => {
if (control === "trash") {
await this.helper.when.hover("layer-list-item:" + id);
await this.helper.when.click("layer-list-item:" + id + ":delete");
return;
}
await this.helper.when.click("layer-list-item:" + id);
await this.helper.when.click("skip-target-layer-editor");
await this.helper.when.click("menu-delete-layer");
},
setStyle: async (
styleProperties:
| "geojson"
@@ -73,6 +86,7 @@ export class MaputnikDriver {
| "font"
| "zoom_7_center_0_51"
| "access_tokens"
| "grouped_layers"
| "",
zoom?: number
) => {
@@ -85,6 +99,7 @@ export class MaputnikDriver {
font: "example-style-with-fonts.json",
zoom_7_center_0_51: "example-style-with-zoom-7-and-center-0-51.json",
access_tokens: "access-token-style.json",
grouped_layers: "grouped-layers-style.json",
};
const url = new URL(baseUrl);