Accessing dataengine from different plasmoid

[Simone Gaiarin]

Thanks. I found the way to do it following your advise.

2012/2/22 Weng Xuetian <wengxt at gmail.com>:
> 在 2012年2月22日 星期三 12:59:58，Simone Gaiarin 写道：
>> I'm writing a plasmoid to control redshift.
>> Redshift is a program that change the colour temperature of the monitor.
>>
>> Here you can find the current plasmoid I wrote:
>> http://kde-apps.org/content/show.php/Redshift+plasmoid?content=148737
>>
>> The current plasmoid span a redshift process from inside of it, so if
>> I create two plasmoids they span two different process that create
>> problems each other.
>>
>> What I want is create a plasmoid that can control this process through
>> a dataengine, in such a way there is only one process running,
>> controlled by multiple plasmoids.
>>
>> When the user click on the plasmoid it should be able to start and
>> pause the process. So I need to create a service that perform the
>> start/stop operations on the process.
>>
>> If the configuration is changed the process needs to be restarted.
>> So I have to think about the correct way to connect the config changed
>> event to the restart operation.
>>
>> I hope I've been clear enough.
> So, what I think about this like this:
> 1. Create a dataengine, with only once source. (For your case)
> 2. Abstract all your need to interact with the process as dataengine service.
> Dataengine code will be the only code that interactive with the process
> directly.
> 3. Talk with the dataengine with the ServiceJob
> 4. If some data need to be updated, store the data into data engine.
>
> You could take a look at now-playing, i
> https://projects.kde.org/projects/kde/kde-
> workspace/repository/revisions/master/show/plasma/generic/dataengines/nowplaying
>
> And see how the ServiceJob works.(for nowplaying case, play, pause, stop the
> player).
>
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