org.nakedobjects.plugins.htmlviewer.request.TableBuilder Maven / Gradle / Ivy

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package org.nakedobjects.plugins.htmlviewer.request;

import java.util.Enumeration;

import org.nakedobjects.metamodel.adapter.NakedObject;
import org.nakedobjects.metamodel.facets.collections.modify.CollectionFacet;
import org.nakedobjects.metamodel.facets.propparam.multiline.MultiLineFacet;
import org.nakedobjects.metamodel.spec.NakedObjectSpecification;
import org.nakedobjects.metamodel.spec.feature.NakedObjectAssociation;
import org.nakedobjects.metamodel.spec.feature.NakedObjectAssociationFilters;
import org.nakedobjects.metamodel.spec.feature.OneToManyAssociation;
import org.nakedobjects.metamodel.util.CollectionFacetUtils;
import org.nakedobjects.plugins.htmlviewer.component.Table;
import org.nakedobjects.runtime.context.NakedObjectsContext;


public class TableBuilder {

    public static Table createTable(
            final Context context,
            final String id,
            final NakedObject object,
            final OneToManyAssociation collectionField) {

        final NakedObject collection = collectionField.get(object);
        final String name = collectionField.getName();
        final NakedObjectSpecification type = collectionField.getSpecification();

        final String summary = "Table showing elements of " + name + " field";
        return createTable(context, collectionField != null, collection, summary, type);
    }

    public static Table createTable(
            final Context context,
            final boolean addSelector,
            final NakedObject collection,
            final String summary,
            final NakedObjectSpecification elementType) {
        final CollectionFacet facet = CollectionFacetUtils.getCollectionFacetFromSpec(collection);
        final Enumeration elements = facet.elements(collection);
        final NakedObjectAssociation[] visibleFields = elementType
                .getAssociations(NakedObjectAssociationFilters.STATICALLY_VISIBLE_ASSOCIATIONS);
        final NakedObjectAssociation[] fields = new NakedObjectAssociation[visibleFields.length];
        int len = 0;
        for (int i = 0; i < visibleFields.length; i++) {
            if (!visibleFields[i].isOneToManyAssociation()) {
                fields[len++] = visibleFields[i];
            }
        }

        final Table table = context.getComponentFactory().createTable(len, addSelector);
        table.setSummary(summary);

        for (int i = 0; i < len; i++) {
            table.addColumnHeader(fields[i].getName());
        }

        while (elements.hasMoreElements()) {
            final NakedObject element = (NakedObject) elements.nextElement();
            NakedObjectsContext.getPersistenceSession().resolveImmediately(element);
            final String elementId = context.mapObject(element);
            table.addRowHeader(context.getComponentFactory().createObjectIcon(element, elementId, "icon"));
            for (int i = 0; i < len; i++) {
                final NakedObject fld = fields[i].get(element);

                if (!fields[i].isVisible(NakedObjectsContext.getAuthenticationSession(), element).isAllowed()) {
                    table.addEmptyCell();
                } else if (fld.getSpecification().isParseable()) {
                    final String titleString = fld != null ? fld.titleString() : null;
                    final MultiLineFacet multiline = fld.getSpecification().getFacet(MultiLineFacet.class);
                    final boolean shouldTruncate = multiline != null && multiline.numberOfLines() > 1;
                    table.addCell(titleString, shouldTruncate);
                } else if (fields[i].isOneToOneAssociation() && fld == null) {
                    table.addEmptyCell();
                } else if (fields[i].isOneToOneAssociation()) {
                    NakedObjectsContext.getPersistenceSession().resolveImmediately(fld);
                    final String objectId = context.mapObject(fld);
                    table.addCell(context.getComponentFactory().createObjectIcon(fields[i], fld, objectId, "icon"));
                }
            }
            /*
             * if (addSelector) { table.addCell(context.getFactory().createRemoveOption(id, elementId,
             * collectionField.getId())); }
             */
            // TODO add selection box
            // table.addCell();
            /*
             * if (collectionField != null) { if (collectionField.isValidToRemove(object,
             * element).isAllowed()) { table.addCell(context.getFactory().createRemoveOption(id, elementId,
             * collectionField.getId())); } else { table.addEmptyCell(); } }
             */

        }
        return table;
    }

}

// Copyright (c) Naked Objects Group Ltd.