Bug 11814 OpenExternalJavadoc action should not call findElement on JAR
This causes an exception: Java Model Exception: Java Model Status [Invalid path: C:/Java/IBM1.3/jre/lib/rt.jar.] at org.eclipse.jdt.internal.core.JavaProject.findElement(JavaProject.java:435) at org.eclipse.jdt.internal.ui.actions.OpenExternalJavadocAction.run(OpenExternalJavadocAction.java:102) at org.eclipse.ui.texteditor.RetargetTextEditorAction.run(RetargetTextEditorAction.java:103) at org.eclipse.jface.action.Action.runWithEvent(Action.java:473) at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:407) at org.eclipse.jface.action.ActionContributionItem.handleWidgetEvent(ActionContributionItem.java(Compiled Code)) at org.eclipse.jface.action.ActionContributionItem$ActionListener.handleEvent(ActionContributionItem.java(Compiled Code)) at org.eclipse.jface.action.ActionContributionItem$ActionListener.handleEvent(ActionContributionItem.java(Compiled Code)) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java(Compiled Code)) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java(Compiled Code)) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java(Compiled Code)) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java(Compiled Code)) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java(Compiled Code)) at org.eclipse.ui.internal.Workbench.run(Workbench.java:698) at org.eclipse.core.internal.boot.InternalBootLoader.run(InternalBootLoader.java:777) at org.eclipse.core.boot.BootLoader.run(BootLoader.java:319) at java.lang.reflect.Method.invoke(Native Method) at org.eclipse.core.launcher.Main.basicRun(Main.java:196) at org.eclipse.core.launcher.Main.run(Main.java:555) at org.eclipse.core.launcher.UIMain.main(UIMain.java:52) 4 org.eclipse.jdt.core 979 Invalid path: C:/Java/IBM1.3/jre/lib/rt.jar.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/SourceAttachmentBlock.java
}
			
		}
		return status;
	}
	
	private IStatus updateJavaDocLocationStatus() {
		StatusInfo status= new StatusInfo();
		fJavaDocLocation= null;
		String jdocLocation= fJavaDocField.getText();
		if (!"".equals(jdocLocation)) { 
			try {
				URL url= new URL(jdocLocation);
				if ("file".equals(url.getProtocol())) { 
					File dir= new File(url.getFile());
					if (!dir.isDirectory()) {
						status.setError(NewWizardMessages.getString("SourceAttachmentBlock.javadoc.error.notafolder")); 
						return status;
					} else {
						File packagesFile= new File(dir, "package-list");
						if (!packagesFile.exists()) {
							status.setWarning(NewWizardMessages.getString("SourceAttachmentBlock.javadoc.warning.packagelist"));
							
						}
					}	
				}
				fJavaDocLocation= url;
			} catch (MalformedURLException e) {
				status.setError(NewWizardMessages.getFormattedString("SourceAttachmentBlock.javadoc.error.malformed", e.getLocalizedMessage())); 
				return status;