[Bugs] #4187 Browse NORM: Focus of url entry stays when closing a tab

[Sugar Labs Bugs]

#4187: Focus of url entry stays when closing a tab
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    Reporter:  erikos       |          Owner:  humitos 
        Type:  defect       |         Status:  assigned
    Priority:  Normal       |      Milestone:  0.98    
   Component:  Browse       |        Version:  0.97.x  
    Severity:  Major        |       Keywords:  r?      
Distribution:  Unspecified  |   Status_field:  Assigned
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Comment(by manuq):

 Working great, only fails when the prevvious tab has a PDF, the entry is
 left focused and there is an error in the log:

 {{{
 Traceback (most recent call last):
   File "/home/olpc/Activities/Browse.activity/webtoolbar.py", line 351, in
 __switch_page_cb
     self._connect_to_browser(tabbed_view.props.current_browser)
   File "/home/olpc/Activities/Browse.activity/webtoolbar.py", line 360, in
 _connect_to_browser
     address = self._browser.props.uri or self._browser.loading_uri
 AttributeError: 'DummyBrowser' object has no attribute 'loading_uri'
 }}}

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Ticket URL: <http://bugs.sugarlabs.org/ticket/4187#comment:4>
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