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[EMFForms] Tweak spacing of renderers [message #1749068]

Thu, 01 December 2016 14:37

Hauke Fuhrmann

Messages: 26
Registered: January 2016

Junior Member

Hi there,

the default EMF Forms SWT renderers have a grid layout with a vertical spacing of 5. Is this hardcoded or can it be changed by stylesheets (templates)?

I would like to create a very condensed layout and set the verticalSpacing to 0.

I tried by programmatically search the right Composite and tweak its Layout; however, changing the ViewModel will likely change the Composite structure, e.g. when adding Groups or stuff.
Any offical way to tweak this?

Cheers,
Hauke

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Re: [EMFForms] Tweak spacing of renderers [message #1749149 is a reply to message #1749068]

Fri, 02 December 2016 10:36

Eugen Neufeld

Messages: 169
Registered: May 2015

Senior Member

Hi Hauke,
the vertical spacing is the default setting of the gridlayout.
The easiest way to influence this is providing your own org.eclipse.emfforms.spi.swt.core.layout.LayoutProvider using the org.eclipse.emf.ecp.ui.view.swt.layoutProvider ExtensionPoint.

Cheers,
Eugen

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Eugen Neufeld

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Re: [EMFForms] Tweak spacing of renderers [message #1751184 is a reply to message #1749149]

Thu, 05 January 2017 13:35

Hauke Fuhrmann

Messages: 26
Registered: January 2016

Junior Member

Thanks, Eugen.
Principally it seems to work. However, I get the exception below:

"org.eclipse.swt.SWTException: Failed to execute runnable (org.eclipse.e4.core.di.InjectionException: java.lang.IllegalStateException: There must be exactly one LayoutProvider!
Found 2 providers.
my.CustomLayoutProvider@b7bd26
org.eclipse.emf.ecp.view.swt.internal.layout.ECPLayoutProvider@c3f13e)"

To resolve, I had to remove the bundle "org.eclipse.emf.ecp.view.swt.layout" from my run-configuration. Then it worked.

However, this is not really feasible, because the bundle is part of the emfforms feature which we include in our product in order to avoid maintaining the list of required plug-ins manually and end in bundle-hell.
Any hint how to do this right?

Cheers,
Hauke

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Re: [EMFForms] Tweak spacing of renderers [message #1751653 is a reply to message #1751184]

Thu, 12 January 2017 09:46

Eugen Neufeld

Messages: 169
Registered: May 2015

Senior Member

Hi Hauke,
I see the problem.
You could try providing your layout provider as an OSGi Service witch provides the org.eclipse.emfforms.spi.swt.core.layout.LayoutProvider.
This way your layoutprovider should have a priority and be used over the default one provided via extension point.

Cheers,
Eugen

--
Eugen Neufeld

Get professional Eclipse developer support:
http://eclipsesource.com/en/services/developer-support/

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Re: [EMFForms] Tweak spacing of renderers [message #1752063 is a reply to message #1751653]

Wed, 18 January 2017 13:06

Eugen Neufeld

Messages: 169
Registered: May 2015

Senior Member

Hi Hauke,
You will need the 1.12 release in order to provide the layout provider as an OSGi Service. You can find the 1.12 M1 Build here:
http://download.eclipse.org/ecp/releases/releases_target_112/1120_M1/

Cheers,
Eugen

--
Eugen Neufeld

Get professional Eclipse developer support:
http://eclipsesource.com/en/services/developer-support/

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