Fixing favicon loading for all icons. Part of #561

2017-05-31 15:03:29 +01:00
parent 094a0e2391
commit e467988a71
6 changed files with 35 additions and 24 deletions
@@ -0,0 +1,23 @@
+const DEFAULT_FAVICON = "moz-icon://goat?size=16";
+
+// TODO use export here instead of globals
+window.Utils = {
+
+  createFavIconElement(url) {
+    const imageElement = document.createElement("img");
+    imageElement.classList.add("icon", "offpage");
+    imageElement.src = url;
+    const loadListener = (e) => {
+      e.target.classList.remove("offpage");
+      e.target.removeEventListener("load", loadListener);
+      e.target.removeEventListener("error", errorListener);
+    };
+    const errorListener = (e) => {
+      e.target.src = DEFAULT_FAVICON;
+    };
+    imageElement.addEventListener("error", errorListener);
+    imageElement.addEventListener("load", loadListener);
+    return imageElement;
+  }
+
+};