[Bugs] #1652 UNSP: Add Connection Information to 3G (GSM) Modem Support

[Sugar Labs Bugs]

#1652: Add Connection Information to 3G (GSM) Modem Support
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    Reporter:  Dcastelo                   |          Owner:  Dcastelo                   
        Type:  enhancement                |         Status:  new                        
    Priority:  Unspecified by Maintainer  |      Milestone:  Unspecified by Release Team
   Component:  sugar                      |        Version:  Unspecified                
    Severity:  Unspecified                |       Keywords:  3G GSM modem usb r!        
Distribution:  Fedora                     |   Status_field:  Unconfirmed                
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Comment(by Dcastelo):

 The connection information (data sent/received and connection info) is
 shown as properties of the device icon (when the connection is
 established).

 To get the data sent/received uses the PppStats ( u: in_bytes, u:
 out_bytes ) signal available in NetworkManager interface
 org.freedesktop.NetworkManager.Device.Serial
 (http://projects.gnome.org/NetworkManager/developers/spec-07.html#org.freedesktop.NetworkManager.Device.Serial).

 To show the connection time uses a gobject timeout signal. Detects that
 the connection was established by the StateChanged signal available in
 org.freedesktop.NetworkManager.Device.

 Test Case:
 1. Go to control panel, Modem Configuration
 2. Set username, password, number, and apn
 3. Save changes and restart
 4. Connect the device and wait until the device icon appears
 5. Click on connect item
 6. Check that connection information is ok.
 7. Click on disconnect item
 8. Click on connect item
 9. Check that the new connection information is ok.

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Ticket URL: <http://bugs.sugarlabs.org/ticket/1652#comment:1>
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