Package org.apache.isis.viewer.scimpi.dispatcher.view.value

Source Code of org.apache.isis.viewer.scimpi.dispatcher.view.value.FieldName

/*
*  Licensed to the Apache Software Foundation (ASF) under one
*  or more contributor license agreements.  See the NOTICE file
*  distributed with this work for additional information
*  regarding copyright ownership.  The ASF licenses this file
*  to you under the Apache License, Version 2.0 (the
*  "License"); you may not use this file except in compliance
*  with the License.  You may obtain a copy of the License at
*
*        http://www.apache.org/licenses/LICENSE-2.0
*
*  Unless required by applicable law or agreed to in writing,
*  software distributed under the License is distributed on an
*  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
*  KIND, either express or implied.  See the License for the
*  specific language governing permissions and limitations
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package org.apache.isis.viewer.scimpi.dispatcher.view.value;

import org.apache.isis.applib.annotation.Where;
import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
import org.apache.isis.core.metamodel.spec.feature.ObjectAssociation;
import org.apache.isis.core.runtime.system.context.IsisContext;
import org.apache.isis.viewer.scimpi.dispatcher.AbstractElementProcessor;
import org.apache.isis.viewer.scimpi.dispatcher.ForbiddenException;
import org.apache.isis.viewer.scimpi.dispatcher.ScimpiException;
import org.apache.isis.viewer.scimpi.dispatcher.processor.Request;

public class FieldName extends AbstractElementProcessor {

    // REVIEW: should provide this rendering context, rather than hardcoding.
    // the net effect currently is that class members annotated with
    // @Hidden(where=Where.ANYWHERE) or @Disabled(where=Where.ANYWHERE) will indeed
    // be hidden/disabled, but will be visible/enabled (perhaps incorrectly)
    // for any other value for Where
    private final Where where = Where.ANYWHERE;

    @Override
    public void process(final Request request) {
        final String id = request.getOptionalProperty(OBJECT);
        final String fieldName = request.getRequiredProperty(FIELD);
        final ObjectAdapter object = request.getContext().getMappedObjectOrResult(id);
        final ObjectAssociation field = object.getSpecification().getAssociation(fieldName);
        if (field == null) {
            throw new ScimpiException("No field " + fieldName + " in " + object.getSpecification().getFullIdentifier());
        }
        if (field.isVisible(IsisContext.getAuthenticationSession(), object, where).isVetoed()) {
            throw new ForbiddenException(field, ForbiddenException.VISIBLE);
        }
        request.appendAsHtmlEncoded(field.getName());
    }

    @Override
    public String getName() {
        return "field-name";
    }

    public static void write(final Request content, final ObjectAssociation field) {
        content.appendHtml("<span class=\"label\" title=\"" + field.getDescription() + "\">");
        content.appendHtml("</span>");
    }

}
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