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Custom LayoutProvider error [message #1728861] Fri, 08 April 2016 05:48 Go to next message
Martin Jedlicka is currently offline Martin JedlickaFriend
Messages: 122
Registered: January 2016
Senior Member
Hello,

I created a custom layout provider, but when I click Arrange All, and displays the exception NullPointerException (see below).

Some idea?

Thanks so much for any advice.

Martin

My code CustomLayoutProvider:

package com.ge.eufo.poc.design.services;

import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart;
import org.eclipse.gmf.runtime.diagram.ui.services.layout.AbstractLayoutEditPartProvider;
import org.eclipse.sirius.diagram.ui.tools.api.layout.provider.GridLayoutProvider;
import org.eclipse.sirius.diagram.ui.tools.api.layout.provider.LayoutProvider;

public class CustomLayoutProvider implements LayoutProvider {

	/** The process diagram layout provider. */
    private GridLayoutProvider processDiagramLayoutProvider;


	@Override
	public AbstractLayoutEditPartProvider getLayoutNodeProvider(IGraphicalEditPart container) {
		if (isProcessDiagram(container)) {
			return getProcessDiagramLayoutProvider();
		}

		return null;
	}

	@Override
	public boolean isDiagramLayoutProvider() {
		return false;
	}

	@Override
	public boolean provides(IGraphicalEditPart container) {
		return isProcessDiagram(container);
	}

	private boolean isProcessDiagram(IGraphicalEditPart container) {
		return true;
	}

	 public GridLayoutProvider getProcessDiagramLayoutProvider() {
		 if (processDiagramLayoutProvider == null) {
			 processDiagramLayoutProvider = new GridLayoutProvider();
			 processDiagramLayoutProvider.setColumnSizeMode(GridLayoutProvider.DIMENSION_BY_LINE_OR_COLUMN);
			 processDiagramLayoutProvider.setLineSizeMode(GridLayoutProvider.DIMENSION_BY_LINE_OR_COLUMN);
			 processDiagramLayoutProvider.getPadding().top = 20;
			 processDiagramLayoutProvider.getPadding().bottom = 20;
			 processDiagramLayoutProvider.getPadding().left = 30;
			 processDiagramLayoutProvider.getPadding().right = 30;
		 }
		 return processDiagramLayoutProvider;
	 }
}


My plugin.xml:
<extension
        point="org.eclipse.sirius.diagram.ui.layoutProvider">
     <layoutProvider
           priority="highest"
           providerClass="com.ge.eufo.poc.design.services.CustomLayoutProvider">
     </layoutProvider>
  </extension>


Exception:
!ENTRY org.eclipse.gmf.runtime.diagram.ui 4 4 2016-04-08 07:41:46.202
!MESSAGE execute
!STACK 0
org.eclipse.core.commands.ExecutionException: While executing the operation, an exception occurred
	at org.eclipse.core.commands.operations.DefaultOperationHistory.execute(DefaultOperationHistory.java:524)
	at org.eclipse.sirius.diagram.ui.tools.internal.editor.DDiagramCommandStack.execute(DDiagramCommandStack.java:71)
	at org.eclipse.sirius.diagram.ui.tools.internal.editor.DDiagramCommandStack.execute(DDiagramCommandStack.java:52)
	at org.eclipse.gmf.runtime.diagram.ui.actions.DiagramAction.execute(DiagramAction.java:141)
	at org.eclipse.gmf.runtime.diagram.ui.actions.DiagramAction.doRun(DiagramAction.java:103)
	at org.eclipse.gmf.runtime.diagram.ui.actions.internal.ArrangeAction.doRun(ArrangeAction.java:278)
	at org.eclipse.gmf.runtime.common.ui.action.AbstractActionHandler.run(AbstractActionHandler.java:359)
	at org.eclipse.gmf.runtime.common.ui.action.ActionManager$1.run(ActionManager.java:225)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
	at org.eclipse.gmf.runtime.common.ui.action.ActionManager.run(ActionManager.java:223)
	at org.eclipse.gmf.runtime.common.ui.action.AbstractActionHandler.runWithEvent(AbstractActionHandler.java:377)
	at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:595)
	at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:511)
	at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:420)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4362)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4180)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3769)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1127)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)
	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:694)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:606)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1515)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1488)
Caused by: java.lang.NullPointerException
	at org.eclipse.sirius.diagram.ui.edit.internal.validators.ResizeValidator.getDNodes(ResizeValidator.java:74)
	at org.eclipse.sirius.diagram.ui.edit.internal.validators.ResizeValidator.validate(ResizeValidator.java:52)
	at org.eclipse.sirius.diagram.ui.graphical.edit.policies.AirResizableEditPolicy.getResizeCommand(AirResizableEditPolicy.java:183)
	at org.eclipse.gef.editpolicies.ResizableEditPolicy.getCommand(ResizableEditPolicy.java:132)
	at org.eclipse.gmf.runtime.diagram.ui.editpolicies.ResizableShapeEditPolicy.getCommand(ResizableShapeEditPolicy.java:136)
	at org.eclipse.gef.editparts.AbstractEditPart.getCommand(AbstractEditPart.java:502)
	at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.access$1(GraphicalEditPart.java:1)
	at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart$1.run(GraphicalEditPart.java:482)
	at org.eclipse.emf.transaction.impl.TransactionalEditingDomainImpl.runExclusive(TransactionalEditingDomainImpl.java:328)
	at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.getCommand(GraphicalEditPart.java:477)
	at org.eclipse.sirius.diagram.ui.edit.api.part.AbstractDiagramNodeEditPart.getCommand(AbstractDiagramNodeEditPart.java:384)
	at org.eclipse.sirius.diagram.ui.tools.api.layout.provider.AbstractLayoutProvider$CommandWrapper.getWrappedCommand(AbstractLayoutProvider.java:384)
	at org.eclipse.sirius.diagram.ui.tools.api.layout.provider.AbstractLayoutProvider$CommandWrapper.canExecute(AbstractLayoutProvider.java:348)
	at org.eclipse.sirius.diagram.ui.tools.api.layout.provider.GridLayoutProvider.layoutEditParts(GridLayoutProvider.java:214)
	at org.eclipse.sirius.diagram.ui.tools.api.layout.provider.DefaultLayoutProvider.layoutEditParts(DefaultLayoutProvider.java:94)
	at org.eclipse.sirius.diagram.ui.tools.api.layout.provider.AbstractLayoutProvider.buildCommand(AbstractLayoutProvider.java:204)
	at org.eclipse.sirius.diagram.ui.tools.api.layout.provider.AbstractLayoutProvider.buildCommand(AbstractLayoutProvider.java:198)
	at org.eclipse.sirius.diagram.ui.tools.api.layout.provider.AbstractLayoutProvider.layoutEditParts(AbstractLayoutProvider.java:130)
	at org.eclipse.gmf.runtime.diagram.ui.services.layout.AbstractLayoutEditPartProvider.layoutLayoutNodes(AbstractLayoutEditPartProvider.java:69)
	at org.eclipse.gmf.runtime.diagram.ui.internal.services.layout.LayoutNodesOperation.execute(LayoutNodesOperation.java:74)
	at org.eclipse.gmf.runtime.common.core.service.ExecutionStrategy$1.execute(ExecutionStrategy.java:70)
	at org.eclipse.gmf.runtime.common.core.service.Service.execute(Service.java:651)
	at org.eclipse.gmf.runtime.diagram.ui.services.layout.LayoutService.execute(LayoutService.java:66)
	at org.eclipse.gmf.runtime.diagram.ui.services.layout.LayoutService.layoutLayoutNodes(LayoutService.java:299)
	at org.eclipse.gmf.runtime.diagram.ui.commands.ArrangeCommand.getCommandForExecution(ArrangeCommand.java:124)
	at org.eclipse.gmf.runtime.diagram.ui.commands.ArrangeCommand.doExecuteWithResult(ArrangeCommand.java:93)
	at org.eclipse.gmf.runtime.emf.commands.core.command.AbstractTransactionalCommand.doExecute(AbstractTransactionalCommand.java:247)
	at org.eclipse.emf.workspace.AbstractEMFOperation.execute(AbstractEMFOperation.java:150)
	at org.eclipse.emf.workspace.CompositeEMFOperation.doExecute(CompositeEMFOperation.java:217)
	at org.eclipse.emf.workspace.AbstractEMFOperation.execute(AbstractEMFOperation.java:150)
	at org.eclipse.gmf.runtime.common.core.command.CompositeCommand.doExecuteWithResult(CompositeCommand.java:403)
	at org.eclipse.gmf.runtime.common.core.command.AbstractCommand.execute(AbstractCommand.java:134)
	at org.eclipse.gmf.runtime.common.core.command.CompositeCommand.doExecuteWithResult(CompositeCommand.java:403)
	at org.eclipse.gmf.runtime.common.core.command.AbstractCommand.execute(AbstractCommand.java:134)
	at org.eclipse.sirius.diagram.ui.tools.internal.commands.WrappingCommandIgnoringAffectedFiles.execute(WrappingCommandIgnoringAffectedFiles.java:124)
	at org.eclipse.core.commands.operations.DefaultOperationHistory.execute(DefaultOperationHistory.java:516)
	... 40 more

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Re: Custom LayoutProvider error [message #1728869 is a reply to message #1728861] Fri, 08 April 2016 07:00 Go to previous messageGo to next message
Martin Jedlicka is currently offline Martin JedlickaFriend
Messages: 122
Registered: January 2016
Senior Member
Problem solved, necessary to implement the content of the method isProcessDiagram(*) for a diagram.

Martin

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Re: Custom LayoutProvider error [message #1729330 is a reply to message #1728869] Wed, 13 April 2016 06:51 Go to previous messageGo to next message
Rahul Bhogavkar is currently offline Rahul BhogavkarFriend
Messages: 13
Registered: April 2016
Junior Member
Hello Mr. Martin,
I'm new to this sirius diagram generation. I'm also having a problem regarding layout.
Can you please tell in brief How to implement content of the method isProcessDiagram and How to call this service to my diagram.

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Re: Custom LayoutProvider error [message #1729421 is a reply to message #1729330] Thu, 14 April 2016 05:14 Go to previous messageGo to next message
Martin Jedlicka is currently offline Martin JedlickaFriend
Messages: 122
Registered: January 2016
Senior Member
Hi,
it is simple, this is instruction https://www.eclipse.org/sirius/doc/developer/extensions-provide_custom-arrange-all.html

Add custom layout provider to Sirius
<extension
        point="org.eclipse.sirius.diagram.ui.layoutProvider">
     <layoutProvider
           priority="highest"
           providerClass="com.ge.eufo.poc.design.services.CustomLayoutProvider">
     </layoutProvider>
  </extension>


Custom layout provider is then called automatically after pressing button Arrange All in the toolbar Sirius.

Content method isProcessDiagram is (content of the method is such that testing diagram name):
private boolean isProcessDiagram(IGraphicalEditPart container) {
		if (container instanceof AbstractDDiagramEditPart) {
			AbstractDDiagramEditPart editPart = (AbstractDDiagramEditPart) container;
			if (editPart.resolveSemanticElement() instanceof DDiagram) {
				DDiagram diagram = (DDiagram) editPart.resolveSemanticElement();
				if (diagram.getDescription() != null) {
					DiagramDescription diagramDescription = diagram.getDescription();
					String name = diagramDescription.getName();
					if (name.equals("Process diagram")) {
						return true;
					}
				}
			}
		}
		return false;
}

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Re: Custom LayoutProvider error [message #1729782 is a reply to message #1729421] Tue, 19 April 2016 05:10 Go to previous message
Rahul Bhogavkar is currently offline Rahul BhogavkarFriend
Messages: 13
Registered: April 2016
Junior Member
Thank You so much Martin....
I'll be in touch with you for the next problem.

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