+ hover improvements

package org.etsi.mts.tdl.ui.hover;

import java.util.Collection;

import java.util.List;

import java.util.stream.Collectors;

import org.eclipse.emf.ecore.ENamedElement;

import org.eclipse.emf.ecore.EObject;

import org.eclipse.emf.ecore.EStructuralFeature.Setting;

import org.eclipse.emf.ecore.util.EcoreUtil;

import org.eclipse.xtext.ui.editor.hover.html.DefaultEObjectHoverProvider;

import org.etsi.mts.tdl.Member;

import org.etsi.mts.tdl.MemberAssignment;

import org.etsi.mts.tdl.NamedElement;

import org.etsi.mts.tdl.Parameter;

import org.etsi.mts.tdl.ParameterBinding;

import org.etsi.mts.tdl.StructuredDataInstance;

import org.etsi.mts.tdl.StructuredDataType;

import org.etsi.mts.tdl.TestDescription;

import org.etsi.mts.tdl.TestObjective;

public class TDLtxHoverProvider extends DefaultEObjectHoverProvider {

	protected String getHoverInfoAsHtml(EObject o) {

		String html = super.getHoverInfoAsHtml(o);

		if (o instanceof NamedElement) {

			html = "<b>"+o.eClass().getName()+" : "+((NamedElement) o).getName()+"</b>";

		}

		if (o instanceof TestObjective) {

			//TODO: search within resource set?

			//TODO: basic PoC, elaborate further, e.g. links, other info 

			html+="<br/></br>Referenced in: <b><ul><li>"+targets+"</li></ul></b></br</br>";

		}

		if (o instanceof StructuredDataType) {

			String members = ((StructuredDataType) o).allMembers().stream().map(e -> e.getName() + " : "+e.getDataType().getName()).collect(Collectors.joining("</li><li>"));

			html+="<br/></br>Members: <b><ul><li>"+members+"</li></ul></b></br</br>";

			String members = getListOfMembers((StructuredDataType) o);

			html+="<br/></br>Members: <b>"+members+"</b></br</br>";

		}		

		if (o instanceof StructuredDataInstance) {

			StructuredDataInstance instance = (StructuredDataInstance) o;

			html+="<br/><br/>Type: <b>"+instance.getDataType().getName()+"</b>";

			String members = getListOfMembers((StructuredDataType) instance.getDataType());

			html+="<br/></br>Members: <b>"+members+"</b></br</br>";

			//TODO: merge assignments above?

			String unassigned = getListOfUnassignedMembers((StructuredDataType) instance.getDataType(), instance.getMemberAssignment());

			if (!unassigned.equals("<ul><li></li></ul>")) {

				html+="Unassigned Members: <b>"+unassigned+"</b></br</br>";

			}

		}		

		if (o instanceof Parameter) {

			html+="<br/><br/>Type: <b>"+((Parameter) o).getDataType().getName()+"</b>";

			if (((Parameter) o).getDataType() instanceof StructuredDataType) {

				String members = getListOfMembers((StructuredDataType) ((Parameter) o).getDataType());

				html+="<br/></br>Members: <b>"+members+"</b></br</br>";

				//not really possible to determine

//				String unbound = getListOfUnboundParameters(((StructuredDataType) ((Parameter) o).getDataType()), o);

//				html+="<br/></br>Unbound Parameters: <b>"+unbound+"</b></br</br>";

			}

		}

		//TODO: data use

		return html;

	}

	//TODO: move to label providers?

	private String getListOfMembers(StructuredDataType o) {

		String members = o.allMembers().stream()

				.map(e -> e.getName() + " : "+e.getDataType().getName() + (e.isIsOptional() ? " (optional)" : ""))

				.collect(Collectors.joining("</li><li>"));

		return "<ul><li>"+members+"</li></ul>";

	}

	private String getListOfUnassignedMembers(StructuredDataType o, List<MemberAssignment> m) {

		List<Member> assigned = m.stream().map(e->e.getMember()).collect(Collectors.toList());

		String members = o.allMembers().stream()

				.filter(e->!assigned.contains(e))

				.map(e -> e.getName() + " : "+e.getDataType().getName() + (e.isIsOptional() ? " (optional)" : ""))

				.collect(Collectors.joining("</li><li>"));

		return "<ul><li>"+members+"</li></ul>";

	}

	private String getListOfUnboundParameters(StructuredDataType o, List<ParameterBinding> m) {

		List<Parameter> assigned = m.stream().map(e->e.getParameter()).collect(Collectors.toList());

		String members = o.allMembers().stream()

				.filter(e->!assigned.contains(e))

				.map(e -> e.getName() + " : "+e.getDataType().getName() + (e.isIsOptional() ? " (optional)" : ""))

				.collect(Collectors.joining("</li><li>"));

		return "<ul><li>"+members+"</li></ul>";

	}

	protected String getHoverInfoAsHtml(TestObjective o) {

		String html = super.getHoverInfoAsHtml(o);

		System.out.println(html);