Development/Tutorials/Plasma4/Services: Difference between revisions

Revision as of 20:54, 29 June 2011

Development/Tutorials/Plasma/DataEngines

Writing a Service

Tutorial Series	Plasma Tutorial
Previous	C++, Qt, KDE development environment
What's Next
Further Reading	DataEngine API, CMake Tutorials, Writing a Plasmoid (Tutorial), Writing a Data Engine (Tutorial)

Abstract

cover services, .operations file, .operations dtd spec, perhaps make a service like the pastebin one or something. idk, something easy.

http://www.kde.org/standards/kcfg/1.0/kcfg.xsd

also mention how a service can access the dataengine via it's pointer(I think that's in public api), if it really really needs to(e.g. plasma-kdm can't live without that)

The Plasma Engine Explorer

A very useful tool for anyone writing services is the Plasma engine explorer. You can use it to see test services by launching them by running

plasmaengineexplorer

If the service you want to test is associated to a source, you can access a dialog to launch the service and set its parameters by using the contextual menu of the source and selecting "Get associated service"

The Code

This tutorial will cover adding a service associated with a source into an existing data engine.

The Description of the Service and its parameters

Writing an Operations File

The Main Code

Responding to Request for the Service Associated to a Source

Writing the Code Executing the Action of the Service

Building it

Testing

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 <syntaxhighlight lang="bash">
 plasmaengineexplorer
-</code>
+</syntaxhighlight>
 If the service you want to test is associated to a source, you can access a dialog to launch the service and set its parameters by using the contextual menu of the source and selecting "Get associated service"