feat: add default showed categories

README.md

@@ -90,6 +90,10 @@ TODO: `obligatory_fields` is a new subsection, start using it in the actual appl
 ```
 "accessible_by": ["bikes", "cars", "pedestrians"]
 ```
+- `categories_default_checked` - for a given category, the options that should be pre-checked in the filter panel when the app first loads. E.g.
+```json
+"accessible_by": ["cars", "pedestrians"]
+```
 - `visible_data` - when a datapoint will be rendered as a pin on a map, these fields will be shown in the box when clicking on a pin. E.g.
 ```
 "name",

docs/quickstart.rst

@@ -70,6 +70,46 @@ Example configuration in your data source:
      ]
    }
 
+Categories and Filtering
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+``categories`` is a dict of field name to the list of allowed values for that
+field. Each category is rendered in the frontend as a group of filter
+checkboxes, one per allowed value.
+
+``categories_help``
+   List of category keys that should show a help tooltip next to the
+   category's title. The tooltip text is looked up via the translation key
+   ``categories_help_<category_key>``.
+
+``categories_options_help``
+   Dict of category key to the list of option values within that category
+   that should show a help tooltip. The tooltip text is looked up via the
+   translation key ``categories_options_help_<option_value>``.
+
+``categories_default_checked``
+   Dict of category key to the list of option values that should be
+   pre-checked in the filter panel when the app first loads, before the user
+   has made any selection.
+
+Example configuration in your data source:
+
+.. code-block:: json
+
+   {
+     "categories": {
+       "accessible_by": ["bikes", "cars", "pedestrians"],
+       "type_of_place": ["big bridge", "small bridge"]
+     },
+     "categories_help": ["accessible_by"],
+     "categories_options_help": {
+       "accessible_by": ["cars", "pedestrians"]
+     },
+     "categories_default_checked": {
+       "accessible_by": ["cars"]
+     }
+   }
+
 .. _data-model-visible_data:
 
 Database Types

e2e-tests/e2e_test_data_initial.json

@@ -76,6 +76,11 @@
         "pedestrians"
       ]
     },
+    "categories_default_checked": {
+      "accessible_by": [
+        "cars"
+      ]
+    },
     "visible_data": [
       "remark",
       "accessible_by",

e2e-tests/tests/basic/test_accessibility_table.py

@@ -26,6 +26,13 @@ def setup(self, page: Page, geolocation):
         # Navigate to the page
         page.goto(BASE_URL, wait_until="domcontentloaded")
 
+        # "accessible_by: cars" is checked by default (see categories_default_checked
+        # in the test data), which excludes Zwierzyniecka (bikes/pedestrians only,
+        # no cars). Uncheck it so both seeded locations are visible, matching what
+        # these tests assert.
+        page.wait_for_selector("#filter-form", timeout=MARKER_LOAD_TIMEOUT)
+        page.locator("#filter-form input#cars").uncheck()
+
         # Wait for map markers to load before clicking list view button
         markers = page.locator(".leaflet-marker-icon")
         expect(markers.first).to_be_visible(timeout=MARKER_LOAD_TIMEOUT)

e2e-tests/tests/basic/test_language.py

@@ -10,7 +10,7 @@
 import pytest
 from playwright.sync_api import Page, expect
 
-from tests.conftest import BASE_URL, MARKER_LOAD_TIMEOUT
+from tests.conftest import BASE_URL, MARKER_LOAD_TIMEOUT, clear_default_category_filters
 
 
 def get_language_button(page: Page):
@@ -71,6 +71,10 @@ def test_switch_to_polish_changes_popup_text(self, page: Page):
         page.get_by_role("link", name="polski").click()
         page.wait_for_load_state("domcontentloaded")
 
+        # "accessible_by: cars" is checked by default, which excludes Zwierzyniecka
+        # (bikes/pedestrians only). Clear it so both seeded locations are visible.
+        clear_default_category_filters(page)
+
         # Click marker cluster to expand
         page.locator(".leaflet-marker-icon").first.click()
 

e2e-tests/tests/basic/test_left_panel.py

@@ -347,6 +347,37 @@ def test_small_bridge_filter_has_helper_tooltip(self, page: Page):
         expect(tooltip).to_contain_text("A smaller pedestrian or bike bridge")
 
 
+class TestLeftPanelDefaultCheckedFilters:
+    """Test suite for the categories_default_checked config option"""
+
+    def test_configured_option_is_checked_by_default(self, page: Page):
+        """
+        The 'cars' option of the accessible_by category is configured as
+        default-checked (see categories_default_checked in the test data),
+        so it should be pre-checked when the filter form loads.
+        """
+        page.set_viewport_size({"width": 1200, "height": 800})
+        page.goto(BASE_URL, wait_until="domcontentloaded")
+
+        page.wait_for_selector("#filter-form", timeout=10000)
+
+        cars_checkbox = page.locator("#filter-form input#cars")
+        expect(cars_checkbox).to_be_checked()
+
+    def test_other_options_are_not_checked_by_default(self, page: Page):
+        """
+        Options not listed in categories_default_checked should remain
+        unchecked when the filter form loads.
+        """
+        page.set_viewport_size({"width": 1200, "height": 800})
+        page.goto(BASE_URL, wait_until="domcontentloaded")
+
+        page.wait_for_selector("#filter-form", timeout=10000)
+
+        pedestrians_checkbox = page.locator("#filter-form input#pedestrians")
+        expect(pedestrians_checkbox).not_to_be_checked()
+
+
 class TestLeftPanelScrollbar:
     """Test suite for panel scrollbar styling"""
 

e2e-tests/tests/basic/test_map.py

@@ -58,6 +58,13 @@ def test_should_not_have_scrollbars(self, page: Page):
 
     def test_filter_checkbox_filters_markers(self, page: Page):
         """Verify clicking filter checkbox actually filters the markers on the map"""
+        # On desktop, filter panel is already visible (no toggle needed).
+        # "accessible_by: cars" is checked by default (see categories_default_checked
+        # in the test data), so start by clearing it to see both seeded locations.
+        cars_checkbox = page.get_by_role("checkbox", name="cars", exact=False)
+        expect(cars_checkbox).to_be_checked()
+        cars_checkbox.click()
+
         # Wait for markers to load
         first_marker = page.locator(".leaflet-marker-icon").first
         expect(first_marker).to_be_visible(timeout=5000)
@@ -69,11 +76,8 @@ def test_filter_checkbox_filters_markers(self, page: Page):
         markers = page.locator(".leaflet-marker-icon")
         expect(markers).to_have_count(2)
 
-        # On desktop, filter panel is already visible (no toggle needed)
-
-        # Check the "cars" filter checkbox - this should filter to only show
+        # Re-check the "cars" filter checkbox - this should filter to only show
         # places accessible by cars (1 marker instead of 2)
-        cars_checkbox = page.get_by_role("checkbox", name="cars", exact=False)
         cars_checkbox.click()
 
         # After filtering, only 1 marker should be visible (the one accessible by cars)

e2e-tests/tests/basic/test_mobile_box.py

@@ -9,7 +9,7 @@
 import pytest
 from playwright.sync_api import Page, expect
 
-from tests.conftest import ALL_MOBILE_DEVICES, BASE_URL
+from tests.conftest import ALL_MOBILE_DEVICES, BASE_URL, clear_default_category_filters
 from tests.helpers import EXPECTED_PLACE_ZWIERZYNIECKA, verify_popup_content, verify_problem_form
 
 
@@ -32,6 +32,10 @@ def test_displays_title_and_subtitle_in_popup(
         # Navigate to the page (device emulation already configured by mobile_page fixture)
         mobile_page.goto(BASE_URL, wait_until="domcontentloaded")
 
+        # "accessible_by: cars" is checked by default, which excludes Zwierzyniecka
+        # (bikes/pedestrians only). Clear it so both seeded locations are visible.
+        clear_default_category_filters(mobile_page)
+
         # Click first marker to expand cluster
         # Use JavaScript click to bypass webpack overlay that may intercept clicks on CI
         first_marker = mobile_page.locator(".leaflet-marker-icon").first

e2e-tests/tests/basic/test_popup.py

@@ -6,7 +6,7 @@
 
 from playwright.sync_api import Page, expect
 
-from tests.conftest import BASE_URL, MARKER_LOAD_TIMEOUT
+from tests.conftest import BASE_URL, MARKER_LOAD_TIMEOUT, clear_default_category_filters
 from tests.helpers import EXPECTED_PLACE_ZWIERZYNIECKA, verify_popup_content, verify_problem_form
 
 
@@ -22,6 +22,10 @@ def test_displays_popup_title_subtitle_categories_and_cta(self, page: Page, wind
         """
         page.goto(BASE_URL, wait_until="domcontentloaded")
 
+        # "accessible_by: cars" is checked by default, which excludes Zwierzyniecka
+        # (bikes/pedestrians only). Clear it so both seeded locations are visible.
+        clear_default_category_filters(page)
+
         # Click first marker to trigger cluster expansion
         first_marker = page.locator(".leaflet-marker-icon").first
         first_marker.click()
@@ -78,6 +82,10 @@ def test_problem_form_on_desktop(self, page: Page, window_open_stub):
         """
         page.goto(BASE_URL, wait_until="domcontentloaded")
 
+        # "accessible_by: cars" is checked by default, which excludes Zwierzyniecka
+        # (bikes/pedestrians only). Clear it so both seeded locations are visible.
+        clear_default_category_filters(page)
+
         # Click first marker to trigger cluster expansion
         first_marker = page.locator(".leaflet-marker-icon").first
         first_marker.click()

e2e-tests/tests/basic/test_share.py

@@ -10,7 +10,12 @@
 import pytest
 from playwright.sync_api import Page, expect
 
-from tests.conftest import ALL_MOBILE_DEVICES, BASE_URL, MARKER_LOAD_TIMEOUT
+from tests.conftest import (
+    ALL_MOBILE_DEVICES,
+    BASE_URL,
+    MARKER_LOAD_TIMEOUT,
+    clear_default_category_filters,
+)
 
 
 class TestShareOnDesktop:
@@ -26,6 +31,10 @@ def test_share_button_copies_link_to_clipboard(self, page: Page):
         # Grant clipboard permissions
         page.context.grant_permissions(["clipboard-read", "clipboard-write"])
 
+        # "accessible_by: cars" is checked by default, which excludes Zwierzyniecka
+        # (bikes/pedestrians only). Clear it so both seeded locations are visible.
+        clear_default_category_filters(page)
+
         # Click first marker to trigger cluster expansion
         first_marker = page.locator(".leaflet-marker-icon").first
         first_marker.click()
@@ -82,6 +91,11 @@ def test_shared_link_opens_popup_with_correct_content(self, page: Page):
             wait_until="domcontentloaded",
         )
 
+        # Zwierzyniecka (the shared location) isn't accessible by cars, so it's
+        # excluded by the "accessible_by: cars" default filter. Clear it so the
+        # marker renders and the pending shared-location popup can open.
+        clear_default_category_filters(page)
+
         # Verify popup is visible
         popup = page.locator(".leaflet-popup-content")
         expect(popup).to_be_visible(timeout=MARKER_LOAD_TIMEOUT)
@@ -115,6 +129,10 @@ def test_share_button_triggers_native_share(self, mobile_page: Page, device_name
 
         mobile_page.goto(BASE_URL, wait_until="domcontentloaded")
 
+        # "accessible_by: cars" is checked by default, which excludes Zwierzyniecka
+        # (bikes/pedestrians only). Clear it so both seeded locations are visible.
+        clear_default_category_filters(mobile_page)
+
         # Click first marker to expand cluster
         first_marker = mobile_page.locator(".leaflet-marker-icon").first
         first_marker.evaluate("el => el.click()")
@@ -170,6 +188,11 @@ def test_shared_link_opens_popup_on_mobile(self, mobile_page: Page, device_name:
             wait_until="domcontentloaded",
         )
 
+        # Zwierzyniecka (the shared location) isn't accessible by cars, so it's
+        # excluded by the "accessible_by: cars" default filter. Clear it so the
+        # marker renders and the pending shared-location popup can open.
+        clear_default_category_filters(mobile_page)
+
         # On mobile, popup appears as Material-UI Dialog
         dialog_content = mobile_page.locator(".MuiDialogContent-root")
         expect(dialog_content).to_be_visible(timeout=MARKER_LOAD_TIMEOUT)

e2e-tests/tests/conftest.py

@@ -70,6 +70,30 @@
 }
 
 
+def clear_default_category_filters(page: Page) -> None:
+    """
+    Uncheck the "cars" accessible_by filter that's checked by default (see
+    categories_default_checked in the e2e test data). Several tests rely on
+    both seeded locations (Grunwaldzki and Zwierzyniecka) being visible,
+    which requires clearing this default filter first.
+
+    Opens the mobile filter panel (if collapsed) to reach the checkbox, and
+    closes it again afterwards so it doesn't obscure subsequent interactions.
+    """
+    toggle_button = page.locator('button[aria-label="Toggle left panel"]')
+    opened_dialog = toggle_button.is_visible()
+    if opened_dialog:
+        toggle_button.click()
+
+    page.wait_for_selector("#filter-form", timeout=MARKER_LOAD_TIMEOUT)
+    cars_checkbox = page.locator("#filter-form input#cars")
+    if cars_checkbox.is_checked():
+        cars_checkbox.uncheck()
+
+    if opened_dialog:
+        page.locator('button[aria-label="Close left panel"]').click()
+
+
 def _block_hmr(page: Page) -> None:
     """Block HMR/hot reload requests to prevent page refreshes during tests."""
     page.route("**/ws", lambda route: route.abort())

examples/e2e_test_data.json

@@ -72,6 +72,11 @@
         "pedestrians"
       ]
     },
+    "categories_default_checked": {
+      "accessible_by": [
+        "cars"
+      ]
+    },
     "visible_data": [
       "remark",
       "accessible_by",

frontend/src/components/Categories/CategoriesContext.jsx

@@ -16,8 +16,12 @@ CategoriesContext.displayName = 'CategoriesContext';
  * @returns {React.ReactElement} Context provider with categories state
  */
 export const CategoriesProvider = ({ children }) => {
-    const [categories, setCategories] = useState([]);
-    const value = useMemo(() => ({ categories, setCategories }), [categories]);
+    const [categories, setCategories] = useState({});
+    const [isInitialized, setIsInitialized] = useState(false);
+    const value = useMemo(
+        () => ({ categories, setCategories, isInitialized, setIsInitialized }),
+        [categories, isInitialized],
+    );
 
     return <CategoriesContext.Provider value={value}>{children}</CategoriesContext.Provider>;
 };
@@ -27,9 +31,12 @@ export const CategoriesProvider = ({ children }) => {
  * Must be used within a CategoriesProvider component.
  *
  * @throws {Error} If used outside of CategoriesProvider
- * @returns {Object} Object containing categories array and setCategories function
- * @returns {Array} return.categories - Current categories data
+ * @returns {Object} Object containing categories map and setCategories function
+ * @returns {Object} return.categories - Currently selected filter values keyed by category
  * @returns {Function} return.setCategories - Function to update categories
+ * @returns {boolean} return.isInitialized - True once initial filter state (including
+ *   default-checked options) has been loaded, so consumers can wait before fetching
+ * @returns {Function} return.setIsInitialized - Marks the initial filter state as loaded
  */
 export const useCategories = () => {
     const context = useContext(CategoriesContext);