[e] (0) Add a warning to make sure the seamless='' attribute doesn't get misimplemented to apply cross-origin (credit: lachy)

Hixie · Hixie · commit 77e24cd9c86d · 2008-05-19T23:54:57.000Z
git-svn-id: http://svn.whatwg.org/webapps@1641 340c8d12-0b0e-0410-8428-c7bf67bfef74
diff --git a/index b/index
@@ -14320,6 +14320,14 @@ the time Marco had stuck his tongue out...&lt;/p></pre>
    href="#seamless0">seamless browsing context</a> flag must be set to false
    for that <a href="#browsing1">browsing context</a>.
 
+  <p class=warning>It is important that user agents recheck the above
+   conditions whenever the <a href="#active">active document</a> of the <a
+   href="#nested0">nested browsing context</a> of the <code><a
+   href="#iframe">iframe</a></code> changes, such that the <a
+   href="#seamless0">seamless browsing context</a> flag gets unset if the <a
+   href="#nested0">nested browsing context</a> is <a href="#navigate"
+   title=navigate>navigated</a> to another origin.
+
   <p>An <code><a href="#iframe">iframe</a></code> element never has <a
    href="#fallback">fallback content</a>, as it will always create a nested
    <a href="#browsing1">browsing context</a>, regardless of whether the
diff --git a/source b/source
@@ -12332,6 +12332,13 @@ the time Marco had stuck his tongue out...&lt;/p></pre>
   and the <span>seamless browsing context</span> flag must be set to
   false for that <span>browsing context</span>.</p>
 
+  <p class="warning">It is important that user agents recheck the
+  above conditions whenever the <span>active document</span> of the
+  <span>nested browsing context</span> of the <code>iframe</code>
+  changes, such that the <span>seamless browsing context</span> flag
+  gets unset if the <span>nested browsing context</span> is <span
+  title="navigate">navigated</span> to another origin.</p>
+
 
   <p>An <code>iframe</code> element never has <span>fallback
   content</span>, as it will always create a nested <span>browsing
