[Merge] lp:~boiko/dialer-app/active_call_indicator into lp:dialer-app

[Gustavo Pichorim Boiko]

> I took a look into it, and think this works pretty well:
> 
> === modified file 'src/qml/LiveCallPage/LiveCall.qml'
> --- src/qml/LiveCallPage/LiveCall.qml   2014-06-19 20:42:19 +0000
> +++ src/qml/LiveCallPage/LiveCall.qml   2014-06-25 16:43:32 +0000
> @@ -120,12 +120,10 @@
>          dtmfVisible = (call && call.voicemail);
>      }
> 
> -    onActiveChanged: {
> -        callManager.callIndicatorVisible = !active;
> -    }
> -
> -    Component.onCompleted: {
> -        callManager.callIndicatorVisible = !active;
> +    Binding {
> +        target: callManager
> +        property: "callIndicatorVisible"
> +        value: !active || !Qt.application.active
>      }
> 
>      Timer {

So, this fixes the case of the app being put in background, but what if dialer-app crashes? Then the property is going to stay in an inconsistent state. I think for now we can only rely on the callIndicatorVisible property while the app is in foreground, when it is not we should check hasCalls.

This is not a clean solution but I couldn't come up with anything better doable in short term.
-- 
https://code.launchpad.net/~boiko/dialer-app/active_call_indicator/+merge/223825
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