1 năm trước cách đây · 5b4533cab8
--- a/Tests/LibWeb/Text/expected/Element-offsetParent-of-iframe.txt
+++ b/Tests/LibWeb/Text/expected/Element-offsetParent-of-iframe.txt
@@ -0,0 +1 @@
 
				+iframe offsetParent value: null
			
--- a/Tests/LibWeb/Text/input/Element-offsetParent-of-iframe.html
+++ b/Tests/LibWeb/Text/input/Element-offsetParent-of-iframe.html
@@ -0,0 +1,22 @@
 
				+<!DOCTYPE html>
			
 
				+<script src="include.js"></script>
			
 
				+<script>
			
 
				+    function offsetParentOfChildDocument() {
			
 
				+        const frameDocument = document.querySelector("iframe").contentDocument;
			
 
				+        const frameRoot = frameDocument.documentElement;
			
 
				+        document.documentElement.append(frameRoot);
			
 
				+        document.dispatchEvent(new CustomEvent("offsetParentCalled", { detail: { iframeOffsetParent: frameRoot.offsetParent }}));
			
 
				+    }
			
 
				+
			
 
				+    asyncTest(done => {
			
 
				+        document.addEventListener("offsetParentCalled", event => {
			
 
				+            println(`iframe offsetParent value: ${event.detail.iframeOffsetParent}`);
			
 
				+            done();
			
 
				+        });
			
 
				+    });
			
 
				+</script>
			
 
				+<iframe srcdoc="
			
 
				+<script>
			
 
				+    window.parent.offsetParentOfChildDocument();
			
 
				+</script>
			
 
				+">
			
--- a/Userland/Libraries/LibWeb/HTML/HTMLElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLElement.cpp
@@ -205,7 +205,8 @@ JS::GCPtr<DOM::Element> HTMLElement::offset_parent() const
 
				             return const_cast<Element*>(ancestor);
			
 
				     }
			
 
				 
			
 
				-    VERIFY_NOT_REACHED();
			
 
				+    // 3. Return null.
			
 
				+    return nullptr;
			
 
				 }
			
 
				 
			
 
				 // https://www.w3.org/TR/cssom-view-1/#dom-htmlelement-offsettop