wip: only display visible vertexmarker and do not display if too much

This should improve the edit experience with huge geometries. So one
can still edit the properties event if the path is big, and should
zoom in to allow the geometry to be editable.

umap/static/umap/js/modules/data/features.js

@@ -680,8 +680,8 @@ class Path extends Feature {
 
   edit(event) {
     if (this.map.editEnabled) {
-      if (!this.ui.editEnabled()) this.ui.enableEdit()
       super.edit(event)
+      if (!this.ui.editEnabled()) this.ui.makeGeometryEditable()
     }
   }
 

umap/static/umap/js/modules/rendering/ui.js

@@ -281,6 +281,21 @@ const PathMixin = {
     }
   },
 
+  makeGeometryEditable: function () {
+    if (this._map.editedFeature !== this.feature) {
+      this.disableEdit()
+      return
+    }
+    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.tooltip.open({ content: L._('Please zoom in to edit the geometry') })
+      this.disableEdit()
+    } else {
+      this.enableEdit()
+    }
+  },
+
   addInteractions: function () {
     FeatureMixin.addInteractions.call(this)
     this.on('editable:disable', this.onCommit)
@@ -376,7 +391,7 @@ const PathMixin = {
   getContextMenuEditItems: function (event) {
     const items = FeatureMixin.getContextMenuEditItems.call(this, event)
     if (
-      this._map?.editedFeature !== this &&
+      this._map?.editedFeature !== this.feature &&
       this.feature.isSameClass(this._map.editedFeature)
     ) {
       items.push({