Review Request: Avoid using QDialog::exec in kpasswdserver to address long standing issue

[Dawit Alemayehu]

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http://git.reviewboard.kde.org/r/104817/
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Review request for KDE Runtime and David Faure.


Description
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The attached patch does the following:

- Use QDialog::open instead of QDialog::exec to prevent one password dialog from blocking other password dialogs. This fixes the changes committed with https://git.reviewboard.kde.org/r/103245/ which allowed dialog boxes from different applications to be shown so long as they are not for the same site.

- Update the key under which the password is cached if the request url contains a username, but the user change it in the password dialog. IOW, do now allow a password to be stored under different username than the one used to access the site.

- Added the unit test listed in the TODOs along with several more that exercise all of the above changes.


Diffs
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  kpasswdserver/tests/kpasswdservertest.cpp 38a579b 
  kpasswdserver/DESIGN 6a128f9 
  kpasswdserver/kpasswdserver.h 66f1f57 
  kpasswdserver/kpasswdserver.cpp b2abbd4 

Diff: http://git.reviewboard.kde.org/r/104817/diff/


Testing
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Added several additional unit tests to exercise all the changes. See patch.


Thanks,

Dawit Alemayehu

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