From 666a92ec444a1f9cb76279339d6657a49d395332 Mon Sep 17 00:00:00 2001
From: Yohan Boniface <yohanboniface@free.fr>
Date: Fri, 29 Nov 2024 22:44:00 +0100
Subject: [PATCH] fix: compute length of all shapes for MultiLineString not
 only first

---
 umap/static/umap/js/modules/rendering/ui.js  | 22 +++++++++++--
 umap/tests/integration/test_view_polyline.py | 34 ++++++++++++++++++++
 2 files changed, 53 insertions(+), 3 deletions(-)

diff --git a/umap/static/umap/js/modules/rendering/ui.js b/umap/static/umap/js/modules/rendering/ui.js
index f7779389a..8e0e28e5a 100644
--- a/umap/static/umap/js/modules/rendering/ui.js
+++ b/umap/static/umap/js/modules/rendering/ui.js
@@ -255,7 +255,10 @@ const PathMixin = {
     if (this._map.measureTools?.enabled()) {
       this._map._umap.tooltip.open({ content: this.getMeasure(), anchor: this })
     } else if (this._map._umap.editEnabled && !this._map._umap.editedFeature) {
-      this._map._umap.tooltip.open({ content: translate('Click to edit'), anchor: this })
+      this._map._umap.tooltip.open({
+        content: translate('Click to edit'),
+        anchor: this,
+      })
     }
   },
 
@@ -267,7 +270,9 @@ const PathMixin = {
     this._map.once('moveend', this.makeGeometryEditable, this)
     const pointsCount = this._parts.reduce((acc, part) => acc + part.length, 0)
     if (pointsCount > 100 && this._map.getZoom() < this._map.getMaxZoom()) {
-      this._map._umap.tooltip.open({ content: L._('Please zoom in to edit the geometry') })
+      this._map._umap.tooltip.open({
+        content: L._('Please zoom in to edit the geometry'),
+      })
       this.disableEdit()
     } else {
       this.enableEdit()
@@ -380,8 +385,19 @@ export const LeafletPolyline = Polyline.extend({
   },
 
   getMeasure: function (shape) {
+    let shapes
+    if (shape) {
+      shapes = [shape]
+    } else if (LineUtil.isFlat(this._latlngs)) {
+      shapes = [this._latlngs]
+    } else {
+      shapes = this._latlngs
+    }
     // FIXME: compute from data in feature (with TurfJS)
-    const length = L.GeoUtil.lineLength(this._map, shape || this._defaultShape())
+    const length = shapes.reduce(
+      (acc, shape) => acc + L.GeoUtil.lineLength(this._map, shape),
+      0
+    )
     return L.GeoUtil.readableDistance(length, this._map.measureTools.getMeasureUnit())
   },
 })
diff --git a/umap/tests/integration/test_view_polyline.py b/umap/tests/integration/test_view_polyline.py
index 9ed949bef..99b52fb96 100644
--- a/umap/tests/integration/test_view_polyline.py
+++ b/umap/tests/integration/test_view_polyline.py
@@ -49,3 +49,37 @@ def test_should_open_popup_on_click(live_server, map, page, bootstrap):
     # Close popup
     page.locator("#map").click()
     expect(line).to_have_attribute("stroke-opacity", "0.5")
+
+
+def test_can_use_measure_on_name(live_server, map, page):
+    data = {
+        "type": "FeatureCollection",
+        "features": [
+            {
+                "type": "Feature",
+                "properties": {"name": "linestring"},
+                "geometry": {
+                    "type": "LineString",
+                    "coordinates": [
+                        [11.25, 53.585984],
+                        [10.151367, 52.975108],
+                    ],
+                },
+            },
+            {
+                "type": "Feature",
+                "properties": {"name": "multilinestring"},
+                "geometry": {
+                    "type": "MultiLineString",
+                    "coordinates": [[[8, 53], [13, 52]], [[12, 51], [15, 52]]],
+                },
+            },
+        ],
+    }
+    map.settings["properties"]["labelKey"] = "{name} ({measure})"
+    map.settings["properties"]["onLoadPanel"] = "databrowser"
+    map.save()
+    DataLayerFactory(map=map, data=data)
+    page.goto(f"{live_server.url}{map.get_absolute_url()}#6/10/50")
+    expect(page.get_by_text("linestring (99.7 km)")).to_be_visible()
+    expect(page.get_by_text("multilinestring (592 km)")).to_be_visible()