org.eclipse.gef4.mvc.examples.logo.rcp.parts.FXHoverHandleRootPart.java Source code

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Here is the source code for org.eclipse.gef4.mvc.examples.logo.rcp.parts.FXHoverHandleRootPart.java

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/*******************************************************************************
 * Copyright (c) 2015 itemis AG and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Matthias Wienand (itemis AG) - initial API and implementation
 *
 *******************************************************************************/
package org.eclipse.gef4.mvc.examples.logo.rcp.parts;

import java.util.Map.Entry;

import org.eclipse.gef4.mvc.fx.parts.AbstractFXHandlePart;
import org.eclipse.gef4.mvc.fx.policies.FXHoverOnHoverPolicy;
import org.eclipse.gef4.mvc.parts.IVisualPart;
import org.eclipse.gef4.mvc.viewer.IViewer;

import com.google.common.collect.SetMultimap;

import javafx.geometry.Bounds;
import javafx.geometry.Point2D;
import javafx.scene.Node;
import javafx.scene.Parent;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.VBox;

public class FXHoverHandleRootPart extends AbstractFXHandlePart<VBox> {

    public FXHoverHandleRootPart() {
        setAdapter(new FXHoverOnHoverPolicy() {
            @Override
            public void hover(MouseEvent e) {
                // XXX: deactivate hover for this part
            }
        });
    }

    @Override
    protected void addChildVisual(IVisualPart<Node, ? extends Node> child, int index) {
        getVisual().getChildren().add(index, child.getVisual());
        for (Entry<IVisualPart<Node, ? extends Node>, String> anchorage : getAnchoragesUnmodifiable().entries()) {
            child.attachToAnchorage(anchorage.getKey(), anchorage.getValue());
        }
    }

    @Override
    protected void attachToAnchorageVisual(IVisualPart<Node, ? extends Node> anchorage, String role) {
        super.attachToAnchorageVisual(anchorage, role);
        for (IVisualPart<Node, ? extends Node> child : getChildrenUnmodifiable()) {
            child.attachToAnchorage(anchorage, role);
        }
    }

    @Override
    protected VBox createVisual() {
        VBox vBox = new VBox();
        vBox.setPickOnBounds(true);
        return vBox;
    }

    @Override
    protected void detachFromAnchorageVisual(IVisualPart<Node, ? extends Node> anchorage, String role) {
        super.detachFromAnchorageVisual(anchorage, role);
        for (IVisualPart<Node, ? extends Node> child : getChildrenUnmodifiable()) {
            child.detachFromAnchorage(anchorage, role);
        }
    }

    @Override
    protected void doRefreshVisual(VBox visual) {
        // check if we have a host
        SetMultimap<IVisualPart<Node, ? extends Node>, String> anchorages = getAnchoragesUnmodifiable();
        if (anchorages.isEmpty()) {
            return;
        }

        // determine center location of host visual
        IVisualPart<Node, ? extends Node> anchorage = anchorages.keys().iterator().next();
        refreshHandleLocation(anchorage.getVisual());
    }

    protected void refreshHandleLocation(Node hostVisual) {
        // position vbox top-right next to the host
        Bounds hostBounds = hostVisual.getBoundsInParent();
        Parent parent = hostVisual.getParent();
        if (parent != null) {
            hostBounds = parent.localToScene(hostBounds);
        }
        Point2D location = getVisual().getParent().sceneToLocal(hostBounds.getMaxX(), hostBounds.getMinY());
        getVisual().setLayoutX(location.getX());
        getVisual().setLayoutY(location.getY());
    }

    @Override
    protected void registerAtVisualPartMap(IViewer<Node> viewer, VBox visual) {
    }

    @Override
    protected void removeChildVisual(IVisualPart<Node, ? extends Node> child, int index) {
        getVisual().getChildren().remove(index);
    }

    @Override
    protected void unregisterFromVisualPartMap(IViewer<Node> viewer, VBox visual) {
    }

}