Edited alarm cannot be saved if any point clock app loses focus

[Nekhelesh Ramananthan]

Steps to reproduce bug:
1. Edit an alarm
2. Switch apps or open the indicator or anything to make clock app lose active focus.
3. Press the save header button to save the alarm

What happens:
Pressing the save button does nothing

What is expected:
Edited alarm is saved correctly

Log Error: L103 EditAlarmPage: TypeError: Cannot assign to null [1]

What happens is that the "tempAlarm" variable becomes undefined after content-hub is used to import a new custom sound. As a result, the line tempAlarm.message = _alarm.message naturally fails [2]

[1] http://bazaar.launchpad.net/~ubuntu-clock-dev/ubuntu-clock-app/utopic-3.0/view/head:/app/alarm/EditAlarmPage.qml#L103

[2] http://bazaar.launchpad.net/~ubuntu-clock-dev/ubuntu-clock-app/utopic-3.0/view/head:/app/alarm/AlarmList.qml#L74

[Nekhelesh Ramananthan (nik90)]

Currently investigating with Kenvandine as to why the tempAlarm variable becomes undefined after using content-hub. Will update bug report with findings.

[Nekhelesh Ramananthan (nik90)]

It turns out that this issue is more widespread than originally anticipated. If the user while editing an alarm switches applications (clock app loses focus), the alarmModel is reloaded and the tempAlarm becomes invalid as a result. Raising bug priority to critical since this is more than a content-hub issue.

Content-hub just made the problem appear consistently enough to be detected!

[Ubuntu Phone Apps Jenkins Bot (ubuntu-phone-apps-jenkins-bot)]

Fix committed into lp:ubuntu-clock-app at revision 354, scheduled for release in ubuntu-clock-app, milestone 3.5