WiresUtils.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.client.lienzo.canvas.wires;

import com.ait.lienzo.client.core.shape.IDrawable;
import com.ait.lienzo.client.core.shape.wires.WiresConnector;
import com.ait.lienzo.client.core.shape.wires.WiresContainer;
import com.ait.lienzo.client.core.shape.wires.WiresLayer;
import com.ait.lienzo.client.core.shape.wires.WiresMagnet;
import com.ait.lienzo.client.core.shape.wires.WiresShape;
import org.kie.workbench.common.stunner.core.client.canvas.AbstractCanvasHandler;
import org.kie.workbench.common.stunner.core.client.canvas.Point2D;
import org.kie.workbench.common.stunner.core.client.shape.view.ShapeView;
import org.kie.workbench.common.stunner.core.graph.Edge;
import org.kie.workbench.common.stunner.core.graph.Node;

public final class WiresUtils {

    public static class UserData {

        private String uuid;
        private String group;

        public String getUuid() {
            return uuid;
        }

        public void setUuid(String uuid) {
            this.uuid = uuid;
        }

        public String getGroup() {
            return group;
        }

        public void setGroup(String group) {
            this.group = group;
        }
    }

    public static Point2D getAbsolute(final IDrawable<?> shape) {
        final com.ait.lienzo.client.core.types.Point2D p = com.ait.lienzo.client.core.shape.wires.WiresUtils.getLocation(shape);
        return new Point2D(p.getX(),
                           p.getY());
    }

    public static Node getNode(final AbstractCanvasHandler canvasHandler,
                               final WiresContainer shape) {
        if (null == shape) {
            return null;
        }
        if (shape instanceof ShapeView) {
            final ShapeView view = (ShapeView) shape;
            return canvasHandler.getGraphIndex().getNode(view.getUUID());
        } else if (shape instanceof WiresLayer) {
            final String canvasRoot = canvasHandler.getDiagram().getMetadata().getCanvasRootUUID();
            if (null != canvasRoot) {
                return canvasHandler.getGraphIndex().getNode(canvasRoot);
            }
        }
        return null;
    }

    public static Node getNode(final AbstractCanvasHandler canvasHandler,
                               final WiresMagnet magnet) {
        if (null == magnet) {
            return null;
        }
        final WiresShape shape = magnet.getMagnets().getWiresShape();
        return getNode(canvasHandler,
                       shape);
    }

    public static Edge getEdge(final AbstractCanvasHandler canvasHandler,
                               final WiresConnector connector) {
        if (connector instanceof ShapeView) {
            final ShapeView view = (ShapeView) connector;
            return canvasHandler.getGraphIndex().getEdge(view.getUUID());
        }
        return null;
    }

    public static boolean isWiresShape(final ShapeView<?> shapeView) {
        return shapeView instanceof WiresShape;
    }

    public static boolean isWiresContainer(final ShapeView<?> shapeView) {
        return shapeView instanceof WiresContainer;
    }

    public static boolean isWiresConnector(final ShapeView<?> shapeView) {
        return shapeView instanceof WiresConnector;
    }

    public static boolean isWiresShape(final WiresContainer wiresShape) {
        return isWiresLayer(wiresShape) ||
                (null != wiresShape
                        && null != wiresShape.getContainer().getUserData()
                        && WiresCanvas.WIRES_CANVAS_GROUP_ID.equals(getShapeGroup(wiresShape.getContainer())));
    }

    public static boolean isWiresLayer(final WiresContainer wiresShape) {
        return null != wiresShape && wiresShape instanceof WiresLayer;
    }

    public static void assertShapeUUID(final IDrawable<?> shape,
                                       final String uuid) {
        final UserData ud = assertUserData(shape);
        ud.setUuid(uuid);
    }

    private static UserData assertUserData(final IDrawable<?> shape) {
        Object o = shape.getUserData();
        if (o == null) {
            o = new UserData();
            shape.setUserData(o);
        } else if (!(o instanceof UserData)) {
            throw new IllegalStateException("WiresShape expected to have 'UserData' user data.");
        }
        return (UserData) o;
    }

    public static String getShapeUUID(final IDrawable<?> shape) {
        Object o = shape.getUserData();
        if (o == null) {
            return null;
        } else if (!(o instanceof UserData)) {
            throw new IllegalStateException("WiresShape expected to have 'UserData' user data.");
        }
        final UserData ud = (UserData) o;
        return ud.getUuid();
    }

    public static void assertShapeGroup(final IDrawable<?> shape,
                                        final String group) {
        final UserData ud = assertUserData(shape);
        ud.setGroup(group);
    }

    public static String getShapeGroup(final IDrawable<?> shape) {
        Object o = shape.getUserData();
        if (o == null) {
            return null;
        } else if (!(o instanceof UserData)) {
            throw new IllegalStateException("WiresShape expected to have 'UserData' user data.");
        }
        final UserData ud = (UserData) o;
        return ud.getGroup();
    }
}