From 0ef7c40b8e1ae69ad9ca3e0f6eeca72ca9f72bf1 Mon Sep 17 00:00:00 2001
From: mike-000 <49240900+mike-000@users.noreply.github.com>
Date: Sat, 23 Apr 2022 11:57:22 +0100
Subject: [PATCH] do not reload if already loaded or loading

---
 src/ol/DataTile.js | 33 +++++++++++++++++++--------------
 1 file changed, 19 insertions(+), 14 deletions(-)

diff --git a/src/ol/DataTile.js b/src/ol/DataTile.js
index ecd9fc6509..a5a87dfdb5 100644
--- a/src/ol/DataTile.js
+++ b/src/ol/DataTile.js
@@ -75,21 +75,26 @@ class DataTile extends Tile {
    * @api
    */
   load() {
-    this.state = TileState.LOADING;
-    this.changed();
+    if (this.state == TileState.ERROR) {
+      this.state = TileState.IDLE;
+    }
+    if (this.state == TileState.IDLE) {
+      this.state = TileState.LOADING;
+      this.changed();
 
-    const self = this;
-    this.loader_()
-      .then(function (data) {
-        self.data_ = data;
-        self.state = TileState.LOADED;
-        self.changed();
-      })
-      .catch(function (error) {
-        self.error_ = error;
-        self.state = TileState.ERROR;
-        self.changed();
-      });
+      const self = this;
+      this.loader_()
+        .then(function (data) {
+          self.data_ = data;
+          self.state = TileState.LOADED;
+          self.changed();
+        })
+        .catch(function (error) {
+          self.error_ = error;
+          self.state = TileState.ERROR;
+          self.changed();
+        });
+    }
   }
 }