Bug 20842 – decidePolicyForNavigationAction not called for subsequent clicks on fragment anchors

• Component: WebKit API
• Status: UNCONFIRMED

[Jeff Johnson]

Overview Description:
Some anchors consist entirely of fragments, e.g., <a href="#m">M</a>. The first time you click on such an anchor, the <WebPolicyDelegate> method -(void)webView:(WebView *)sender decidePolicyForNavigationAction:(NSDictionary *)actionInformation request:(NSURLRequest *)request frame:(WebFrame *)frame decisionListener:(id<WebPolicyDecisionListener>)listener is called. However, the method is not called on subsequent clicks on the anchor.

Steps to Reproduce:
1) Unzip, open, build, and run attached sample Xcode project DecidePolicyFragments.
2) Enter the URL http://www.w3.org/TR/html401/index/list.html in the text field and press return.
3) After the webview is loaded, click in the webview to give it focus.
4) Click on the "M" link at the top of the page.
5) Scroll back up to the top of the document.
6) Click the "M" link again.

Actual Results:
decidePolicyForNavigationAction is not called

Expected Results:
decidePolicyForNavigationAction should be called

Build Date & Platform:
Build 2008-09-14 04:33:37 -0500 (Sun, 14 Sep 2008), WebKit svn revision 36403

Additional Builds and Platforms:
Mac OS X 10.5.4 Build 9E17, Mac OS X 10.4.11 Build 8S2167

Additional Information:
If you click "M", click a different link such as "N", and then click "M" again, decidePolicyForNavigationAction does get called. The bug only occurs if you click the same link multiple times in a row. This problem is reproducible with any fragment anchor.

[Jeff Johnson]

Created attachment 23414 [details]
Sample Xcode project

[Jeff Johnson]

To clarify the Actual Results, decidePolicyForNavigationAction does not get called after Step 6. It does get called after step 4. It should get called after both 4 and 6.