Support nodelist indexing

Signed-off-by: Daniel Silverstone <dsilvers@digital-scurf.org>

1 files changed, 30 insertions, 0 deletions

diff --git a/content/handlers/javascript/duktape/generics.js b/content/handlers/javascript/duktape/generics.js
new file mode 100644
index 000000000..ee5e8013b
--- /dev/null
+++ b/content/handlers/javascript/duktape/generics.js
@@ -0,0 +1,30 @@
+/*
+ * Generics for Duktape binding in NetSurf
+ *
+ * The result of this *MUST* be setting a NetSurf object only.
+ *
+ * That object will then be absorbed into the global object as a hidden
+ * object which is used by the rest of the bindings.
+ */
+
+var NetSurf = {
+    /* The make-proxy call for list-type objects */
+    makeListProxy: function(inner) {
+	return new Proxy(inner, {
+	    has: function(target, key) {
+		if (typeof key == 'number') {
+		    return (key >= 0) && (key < target.length);
+		} else {
+		    return key in target;
+		}
+	    },
+	    get: function(target, key) {
+		if (typeof key == 'number') {
+		    return target.item(key);
+		} else {
+		    return target[key];
+		}
+	    },
+	});
+    },
+};