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Description of problem:
For an HBAC rule, you can choose to add a Host in "Accessing" section. Now if you select to delete this without selecting this Host, an error is thrown as indicated in the attachment

Applies to Sudo page as well

Version-Release number of selected component (if applicable):
ipa-server-2.1.1-4.el6.x86_64


How reproducible:
always

Steps to Reproduce:
1. Add and edit HBAC rule
2. Go to its Accessing section, and click to Add a Host
3. Without choosing this Host, click on Delete

Actual results:
Error is thrown - select entries to be removed, with title - The page at <servername> says - (with a firefox icon)


Expected results:
Message is good, but should be an IPA error with a green title

Additional info:

Created attachment 524659 [details]
error message

Upstream ticket:
https://fedorahosted.org/freeipa/ticket/1854

Verified using ipa-server-2.1.2-2.el6.x86_64
Delete button is disabled till an entry is selected

    Technical note added. If any revisions are required, please edit the "Technical Notes" field
    accordingly. All revisions will be proofread by the Engineering Content Services team.
    
    New Contents:
Cause: When a Delete Host button is clicked in a Web UI HBAC Rule Accessing section, a browser error dialog is displayed instead of a standard error Web UI error dialog box.
Consequence: User experience is not consistent
Fix: Disable the Delete Host button until a Host is chosen
Result: The browser error is no longer shown as user always have to choose at least one Host before deleting it

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2011-1533.html