ClearCommand.java

/*
 * Copyright 2016 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.client.canvas.command;

import org.kie.workbench.common.stunner.core.client.canvas.AbstractCanvasHandler;
import org.kie.workbench.common.stunner.core.command.Command;
import org.kie.workbench.common.stunner.core.graph.command.GraphCommandExecutionContext;
import org.kie.workbench.common.stunner.core.graph.command.impl.ClearGraphCommand;
import org.kie.workbench.common.stunner.core.rule.RuleViolation;

/**
 * Clears the canvas and the graph.
 * Note: Undo not supported due to ClearGraphCommand does not support it as well.
 */
public class ClearCommand extends AbstractCanvasGraphCommand {

    @Override
    protected Command<GraphCommandExecutionContext, RuleViolation> newGraphCommand(final AbstractCanvasHandler context) {
        final String rootUUID = context.getDiagram().getMetadata().getCanvasRootUUID();
        return new ClearGraphCommand(rootUUID);
    }

    @Override
    protected AbstractCanvasCommand newCanvasCommand(final AbstractCanvasHandler context) {
        return new ClearCanvasCommand();
    }
}