trawl: ignore hidden links

can be used to trawl only a part of a draw

src/code/dialogs/trawl.js

@@ -6,6 +6,7 @@ import VLatLon from "geodesy/latlon-ellipsoidal-vincenty";
 import { WasabeeMarker, WasabeeBlocker } from "../model";
 import { displayInfo } from "../error";
 import statics from "../static";
+import { isFiltered } from "../filter";
 
 const TrawlerDialog = WDialog.extend({
   statics: {
@@ -290,6 +291,9 @@ const TrawlDialog = WDialog.extend({
 
     const points = new Array();
     for (const l of operation.links) {
+      // Ignore filtered out links
+      if (!isFiltered(l)) continue;
+
       const lls = l.getLatLngs(operation);
       const start = new VLatLon(lls[0].lat, lls[0].lng);
       const end = new VLatLon(lls[1].lat, lls[1].lng);

src/code/filter.ts

@@ -19,7 +19,7 @@ export type Filter =
 
 let currentFilter: Filter = null;
 
-function computeFilter(task: Task, filter: Filter) {
+function computeFilter(task: Task, filter: Filter): boolean {
   if (filter.op === "and") {
     return filter.list.every((f) => computeFilter(task, f));
   } else if (filter.op === "or") {
@@ -90,6 +90,12 @@ function validateFilter(filter: Filter) {
   }
 }
 
+/**
+ * Check if a task is filtered by the current filter
+ *
+ * @param task
+ * @returns `true` if the task must appears, `false` if the task is filtered and may be ignored
+ */
 export function isFiltered(task: Task) {
   if (!currentFilter) return true;
   return computeFilter(task, currentFilter);