GraphConnectionContextImpl.java

/*
 * Copyright 2017 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed 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 under the License.
 */

package org.kie.workbench.common.stunner.core.rule.context.impl;

import java.util.Optional;

import org.kie.workbench.common.stunner.core.graph.Edge;
import org.kie.workbench.common.stunner.core.graph.Graph;
import org.kie.workbench.common.stunner.core.graph.Node;
import org.kie.workbench.common.stunner.core.graph.content.view.View;
import org.kie.workbench.common.stunner.core.rule.RuleEvaluationContext;
import org.kie.workbench.common.stunner.core.rule.context.GraphConnectionContext;

class GraphConnectionContextImpl
        extends AbstractGraphEvaluationContext
        implements GraphConnectionContext {

    private final Edge<? extends View<?>, ? extends Node> connector;
    private final Optional<Node<? extends View<?>, ? extends Edge>> source;
    private final Optional<Node<? extends View<?>, ? extends Edge>> target;

    GraphConnectionContextImpl(final String name,
                               final Graph<?, ? extends Node> graph,
                               final Edge<? extends View<?>, ? extends Node> connector,
                               final Optional<Node<? extends View<?>, ? extends Edge>> source,
                               final Optional<Node<? extends View<?>, ? extends Edge>> target) {
        super(name,
              graph);
        this.connector = connector;
        this.source = source;
        this.target = target;
    }

    @Override
    public Edge<? extends View<?>, ? extends Node> getConnector() {
        return connector;
    }

    @Override
    public Optional<Node<? extends View<?>, ? extends Edge>> getSource() {
        return source;
    }

    @Override
    public Optional<Node<? extends View<?>, ? extends Edge>> getTarget() {
        return target;
    }

    @Override
    public boolean isDefaultDeny() {
        return true;
    }

    @Override
    public Class<? extends RuleEvaluationContext> getType() {
        return GraphConnectionContext.class;
    }
}