1 files changed, 29 insertions, 0 deletions
diff --git a/webAO/dom/updateBackgroundPreview.ts b/webAO/dom/updateBackgroundPreview.ts
new file mode 100644
index 0000000..e55bf60
--- /dev/null
+++ b/webAO/dom/updateBackgroundPreview.ts
@@ -0,0 +1,29 @@
+import { AO_HOST } from "../client";
+
+/**
+ * Update background preview.
+ */
+export function updateBackgroundPreview() {
+    const background_select = <HTMLSelectElement>(
+        document.getElementById("bg_select")
+    );
+    const background_filename = <HTMLInputElement>(
+        document.getElementById("bg_filename")
+    );
+    const background_preview = <HTMLImageElement>(
+        document.getElementById("bg_preview")
+    );
+
+    if (background_select.selectedIndex === 0) {
+        background_filename.style.display = "initial";
+        background_preview.src = `${AO_HOST}background/${encodeURI(
+            background_filename.value.toLowerCase()
+        )}/defenseempty.png`;
+    } else {
+        background_filename.style.display = "none";
+        background_preview.src = `${AO_HOST}background/${encodeURI(
+            background_select.value.toLowerCase()
+        )}/defenseempty.png`;
+    }
+}
+window.updateBackgroundPreview = updateBackgroundPreview;
+\ No newline at end of file