Error when trying to create a V7 designer

[szolo]

Steps to reproduce

1. Use latest Vaadin 7 Designer and Eclipse.
2. Try to create a new V7 designer.

Actual behavior

Nothing happens, exception in the log.

java.lang.NoSuchMethodError: 'org.eclipse.core.runtime.IPath[] org.eclipse.m2e.core.project.IMavenProjectFacade.getResourceLocations()'
	at com.vaadin.designer.eclipse.util.SourceFolderUtils.getResourcesRootFolder(SourceFolderUtils.java:135)
	at com.vaadin.designer.eclipse.wizards.NewDesignWizardPage.init(NewDesignWizardPage.java:478)
	at com.vaadin.designer.eclipse.wizards.NewDesignWizardPage.<init>(NewDesignWizardPage.java:148)
	at com.vaadin.designer.eclipse.wizards.NewDesignWizard.addPages(NewDesignWizard.java:128)
	at org.eclipse.jface.wizard.WizardSelectionPage.getNextPage(WizardSelectionPage.java:119)
	at org.eclipse.ui.internal.dialogs.WorkbenchWizardSelectionPage.getNextPage(WorkbenchWizardSelectionPage.java:98)
	at org.eclipse.jface.wizard.WizardDialog.nextPressed(WizardDialog.java:911)
	at org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:469)
	at org.eclipse.jface.dialogs.Dialog.lambda$0(Dialog.java:619)
	at org.eclipse.swt.events.SelectionListener$1.widgetSelected(SelectionListener.java:84)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:252)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89)
	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4256)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1066)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4054)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3642)
	at org.eclipse.jface.window.Window.runEventLoop(Window.java:823)
	at org.eclipse.jface.window.Window.open(Window.java:799)

Expected behavior

Designer should be created.

IDE, Designer and OS version

Eclipse IDE for Enterprise Java and Web Developers 2022-12, Vaadin Designer 1.4.4 for Vaadin 7, Windows 10.

[lordmikefin]

I got same error (maybe).
I was trying to create new Vaadin 10+ design.

Eclipse error

!ENTRY org.eclipse.ui 4 0 2023-01-27 14:55:28.743
!MESSAGE Unhandled event loop exception
!STACK 0
java.lang.NoSuchMethodError: 'org.eclipse.core.runtime.IPath[] org.eclipse.m2e.core.project.IMavenProjectFacade.getCompileSourceLocations()'
	at com.vaadin.designer2.eclipse.util.SourceFolderUtils.getSourceRootFolder(SourceFolderUtils.java:170)
	at com.vaadin.designer2.eclipse.wizards.NewFlowWizardPage.getJavaSourcePath(NewFlowWizardPage.java:511)
	at com.vaadin.designer2.eclipse.wizards.NewFlowWizardPage.initializeCompanionFileLocation(NewFlowWizardPage.java:506)
	at com.vaadin.designer2.eclipse.wizards.NewFlowWizardPage.initializeFieldsWithDefaults(NewFlowWizardPage.java:473)
	at com.vaadin.designer2.eclipse.wizards.NewFlowWizardPage.initializeFields(NewFlowWizardPage.java:418)
	at com.vaadin.designer2.eclipse.wizards.NewFlowWizardPage.createAdvancedControls(NewFlowWizardPage.java:354)
	at org.eclipse.ui.dialogs.WizardNewFileCreationPage.createControl(WizardNewFileCreationPage.java:240)
	at org.eclipse.jface.wizard.Wizard.createPageControls(Wizard.java:178)
	at org.eclipse.jface.wizard.WizardDialog.createPageControls(WizardDialog.java:744)
	at org.eclipse.jface.wizard.WizardDialog.setWizard(WizardDialog.java:1182)
	at org.eclipse.jface.wizard.WizardDialog.updateForPage(WizardDialog.java:1235)
	at org.eclipse.jface.wizard.WizardDialog.lambda$3(WizardDialog.java:1223)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:74)
	at org.eclipse.jface.wizard.WizardDialog.showPage(WizardDialog.java:1223)
	at org.eclipse.jface.wizard.WizardDialog.nextPressed(WizardDialog.java:918)
	at org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:469)
	at org.eclipse.jface.dialogs.Dialog.lambda$0(Dialog.java:619)
	...

IDE, Designer and OS version

IDE	Designer	Vaadin	OS
Eclipse 2022-12	4.6.20	23.3.5	Windows 10

[Lionel-Peyron-APS]

I've got the same error as @lordmikefin with Vaadin 10+ Design.

It seems related to the m2e plugin's major release: eclipse-m2e/m2e-core#918.

Workaround: Downgrading m2e allows to have a working Vaadin Designer: There was still m2e 1.x in Eclipse 2022-06.

IDE, Designer and OS version

Eclipse 2022-12, Vaadin Designer 4.6.20, Linux

[szolo]

Same problem as #2449. Has been fixed already for Vaadin 7 branch.