refactor: lightbox ID generation and shadow management

Replaces the async SHA-256 based unique ID generation with a synchronous hashCode method in Utility. Refactors LightBox to manage Shadow instances in a local cache instead of querying the DOM, and removes the static find method from Shadow. Also extracts image link wrapping logic into a helper method for clarity.

1 files changed, 9 insertions, 10 deletions

diff --git a/src/utility.js b/src/utility.js
index 790443d..f2ee3fb 100644
--- a/src/utility.js
+++ b/src/utility.js
@@ -1,12 +1,11 @@
-const utility = {
-  generateUniqueId: (str) => {
-    const encoder = new TextEncoder();
-    const data = encoder.encode(str);
-    const hashBuffer = crypto.subtle.digest('SHA-256', data); // SHA-256 hash
-    const hashArray = Array.from(new Uint8Array(hashBuffer)); // Convert buffer to array
-    const hashHex = hashArray.map(byte => byte.toString(16).padStart(2, '0')).join('');
-    return hashHex; // Return the hex string
+export default class Utility {
+  static hashCode(str) {
+    let hash = 0;
+    for (let i = 0, len = str.length; i < len; i++) {
+        let chr = str.charCodeAt(i);
+        hash = (hash << 5) - hash + chr;
+        hash |= 0; // Convert to 32bit integer
+    }
+    return (hash>0) ? hash : -hash;
   }
 }
-
-export default utility;