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Passing variables from the runtime code as parameters to command [message #693258]

Wed, 06 July 2011 06:34

Rajendra Kolli

Messages: 9
Registered: July 2011

Junior Member

Hi all,

I had created an UI in which a set of buttons are created dynamically, based on the data obtained from an XML file. I have to bind a command to each button that enables the user to create a window dynamically upon clicking the button which shows the details of the selection. I have the command ready and the UI ready. But i need to pass some variables from the runtime code, like the selection id, to make the creation of the window possible.

I have tried searching but couldn't find any solution to the above stated problem. If anyone has a solution to it or another procedure to complete, it would be really helpful.

Thanks,
Rajendra Kolli

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Re: Passing variables from the runtime code as parameters to command [message #698075 is a reply to message #693258]

Mon, 18 July 2011 18:11

Paul Webster

Messages: 6859
Registered: July 2009
Location: Ottawa

Senior Member

If you can serialize the information you need to a string, you can store it parameters in a ParameterizedCommand as part of creating your button.

If it is something more dynamic like application state or a selection (so not directly tied to the button at creation time) you can use org.eclipse.ui.handlers.IHandlerService.getCurrentState() so you can add information to an IEvaluationContext and org.eclipse.ui.handlers.IHandlerService.executeCommandInContext(ParameterizedCommand, Event, IEvaluationContext) to execute your command with that extra information.

PW

Paul Webster
http://wiki.eclipse.org/Platform_Command_Framework
http://wiki.eclipse.org/Command_Core_Expressions
http://wiki.eclipse.org/Menu_Contributions

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