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When initially entering credentials in New Server Wizard and there is no default server URL, null errors are continuously thrown when entering credentials while wizard auto-validation kicks in on each text entry in the credentials widgets. This only happens if there is no URL set. Once a URL is set in manage URL, the errors stop and the user can create a server without issues: org.eclipse.core.runtime.AssertionFailedException: null argument: at org.eclipse.core.runtime.Assert.isNotNull(Assert.java:85) at org.eclipse.core.runtime.Assert.isNotNull(Assert.java:73) at org.eclipse.cft.server.core.internal.client.SelfSignedStore.<init>(SelfSignedStore.java:55) at org.eclipse.cft.server.core.internal.CloudFoundryServer.getSelfSignedCertificate(CloudFoundryServer.java:1405) at org.eclipse.cft.server.core.internal.CloudFoundryServer.getSelfSignedCertificate(CloudFoundryServer.java:855) at org.eclipse.cft.server.ui.internal.ServerWizardValidator.serverValidation(ServerWizardValidator.java:190) at org.eclipse.cft.server.ui.internal.ServerWizardValidator.validate(ServerWizardValidator.java:97) at org.eclipse.cft.server.ui.internal.ValidationEventHandler.validate(ValidationEventHandler.java:210) at org.eclipse.cft.server.ui.internal.ValidationEventHandler.getValidationEvent(ValidationEventHandler.java:270) at org.eclipse.cft.server.ui.internal.ValidationEventHandler.handleChange(ValidationEventHandler.java:132) at org.eclipse.cft.server.ui.internal.UIPart.notifyChange(UIPart.java:64) at org.eclipse.cft.server.ui.internal.CloudFoundryCredentialsPart.updateUI(CloudFoundryCredentialsPart.java:289) at org.eclipse.cft.server.ui.internal.CloudFoundryCredentialsPart$2.modifyText(CloudFoundryCredentialsPart.java:183) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:179) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4245) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1501) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1524) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1509) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1313) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4069) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3695) at org.eclipse.jface.window.Window.runEventLoop(Window.java:818) at org.eclipse.jface.window.Window.open(Window.java:794) at org.eclipse.wst.server.ui.internal.actions.LaunchWizardAction.run(LaunchWizardAction.java:57) at org.eclipse.jface.action.Action.runWithEvent(Action.java:473) at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:565) at org.eclipse.jface.action.ActionContributionItem.lambda$4(ActionContributionItem.java:397) at org.eclipse.jface.action.ActionContributionItem$$Lambda$37/1683046409.handleEvent(Unknown Source) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4245) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1501) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1524) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1509) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1313) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4069) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3695) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1118) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1019) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:157) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:691) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:604) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:138) 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:388) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:670) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:609) at org.eclipse.equinox.launcher.Main.run(Main.java:1516)
While I am testing on the fix on this problem, I also notice that if the user remove the last URL on the list, the URL field is cleared but the validation does not occur, i.e. the validate button is still enable. I'll fix that as part of this fix as well.
Code dropped to master
