ConnectionBendpointEditPolicy.java

/* Copyright 2012-2013 the original author or authors.
 *
 * 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.snaker.designer.policies;

import org.eclipse.draw2d.geometry.Point;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.editpolicies.BendpointEditPolicy;
import org.eclipse.gef.requests.BendpointRequest;

import org.snaker.designer.commands.CreateBendpointCommand;
import org.snaker.designer.commands.DeleteBendpointCommand;
import org.snaker.designer.commands.MoveBendpointCommand;

/**
 * 连接折点编辑策略
 * @author yuqs
 * @version 1.0
 */
public class ConnectionBendpointEditPolicy extends BendpointEditPolicy {
	protected Command getCreateBendpointCommand(BendpointRequest request) {
		Point point = request.getLocation();
		getConnection().translateToRelative(point);

		CreateBendpointCommand command = new CreateBendpointCommand();
		command.setLocation(point);
		command.setConnection(getHost().getModel());
		command.setIndex(request.getIndex());

		return command;
	}

	protected Command getDeleteBendpointCommand(BendpointRequest request) {
		DeleteBendpointCommand command = new DeleteBendpointCommand();
		command.setConnectionModel(getHost().getModel());
		command.setIndex(request.getIndex());
		return command;
	}

	protected Command getMoveBendpointCommand(BendpointRequest request) {
		Point location = request.getLocation();
		getConnection().translateToRelative(location);

		MoveBendpointCommand command = new MoveBendpointCommand();
		command.setConnectionModel(getHost().getModel());
		command.setIndex(request.getIndex());
		command.setNewLocation(location);

		return command;
	}
}