Clarify self-navigation behavior in a presentation. (#461)

markafoltz · web-flow · commit fad892375b9e · 2019-04-05T12:54:36.000-07:00
* Be specific about navigation

* Revert

* Restore changes

* Address feedback
diff --git a/index.html b/index.html
@@ -327,6 +327,11 @@ <h2>
           "https://www.w3.org/TR/html51/browsers.html#active-sandboxing-flag-set">
           active sandboxing flag set</a></dfn>
         </li>
+        <li>
+          <dfn><a href=
+          "https://www.w3.org/TR/html51/browsers.html#allowed-to-navigate">allowed
+          to navigate</a></dfn>
+        </li>
         <li>
           <dfn><a href=
           "https://www.w3.org/TR/html51/browsers.html#allowed-to-show-a-popup">allowed
@@ -398,7 +403,7 @@ <h2>
           list of descendant browsing contexts</a></dfn>
         </li>
         <li>
-          <dfn><a href=
+          <dfn data-lt="steps to navigate"><a href=
           "https://www.w3.org/TR/html51/browsers.html#navigated">navigate</a></dfn>
         </li>
         <li>
@@ -3057,14 +3062,25 @@ <h4>
             listed above.
           </p>
           <p>
-            The <a>top-level browsing context</a> MUST NOT be allowed to
-            navigate itself, except by <a>navigating to a fragment
-            identifier</a> or by <a data-lt="reload a document">reloading its
-            document</a>. This allows the user to grant permission based on the
+            When the <a>top-level browsing context</a> attempts to navigate to
+            a new resource and runs the <a>steps to navigate</a>, it MUST
+            follow step 1 to determine if it is <a>allowed to navigate</a>. In
+            addition, it MUST NOT be allowed to navigate itself to a new
+            resource, except by <a>navigating to a fragment identifier</a> or
+            by <a data-lt="reload a document">reloading its document</a>.
+          </p>
+          <p class="note">
+            This allows the user to grant permission based on the origin of the
             presentation URL shown when <a data-lt=
             "select a presentation display">selecting a presentation
             display</a>.
           </p>
+          <p>
+            If the top-level-browsing context was not <a>allowed to
+            navigate</a>, it SHOULD NOT offer to open the resource in a new
+            <a>top-level browsing context</a>, but otherwise SHOULD be
+            consistent with the <a>steps to navigate</a>.
+          </p>
           <p>
             <a>Window clients</a> and <a>worker clients</a> associated with the
             <a>receiving browsing context</a> and its <a>list of descendant
