hydrograph.ui.graph.controller.CommentBoxEditPart.java Source code

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Here is the source code for hydrograph.ui.graph.controller.CommentBoxEditPart.java

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/*******************************************************************************
 * Copyright 2017 Capital One Services, LLC and Bitwise, Inc.
 * 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 hydrograph.ui.graph.controller;

import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;

import org.apache.commons.lang.StringUtils;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.geometry.Dimension;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.gef.AccessibleEditPart;
import org.eclipse.gef.EditPolicy;
import org.eclipse.gef.GraphicalEditPart;
import org.eclipse.gef.Request;
import org.eclipse.gef.editparts.AbstractGraphicalEditPart;
import org.eclipse.swt.accessibility.AccessibleControlEvent;
import org.eclipse.swt.accessibility.AccessibleEvent;

import hydrograph.ui.graph.figure.CommentBoxFigure;
import hydrograph.ui.graph.model.CommentBox;
import hydrograph.ui.graph.policy.CommentBoxDirectEditPolicy;

/**
 * 
 * Default implementation for {@link AbstractGraphicalEditPart} and {@link PropertyChangeListener}
 * 
 * CommentBoxEditPart is a controller class for comment box and The documentation here is targeted at subclassing this
 * class. Callers of public API should refer to the interface's documentation.
 * 
 * @author Bitwise
 * 
 */
public class CommentBoxEditPart extends AbstractGraphicalEditPart implements PropertyChangeListener

{
    private AccessibleEditPart accessibleEditPart;
    private String LABEL_CONTENTS = "labelContents";
    private String SIZE = "Size";
    private String LOCATION = "Location";
    private String LABEL = "Label";

    /**
     * Upon activation, attach to the model element as a property change listener.
     */
    @Override
    public void activate() {
        if (!isActive()) {
            super.activate();
            ((CommentBox) getModel()).addPropertyChangeListener(this);
        }
    }

    @Override
    public void deactivate() {
        if (!isActive())
            return;
        super.deactivate();
        ((CommentBox) getModel()).removePropertyChangeListener(this);
    }

    @Override
    protected AccessibleEditPart getAccessibleEditPart() {
        if (accessibleEditPart == null)
            accessibleEditPart = createAccessible();
        return accessibleEditPart;
    }

    protected AccessibleEditPart createAccessible() {
        return new AccessibleGraphicalEditPart() {
            public void getValue(AccessibleControlEvent e) {
                e.result = getLabel().getLabelContents();
            }

            public void getName(AccessibleEvent e) {
                e.result = LABEL;
            }
        };
    }

    @Override
    protected void createEditPolicies() {
        installEditPolicy(EditPolicy.DIRECT_EDIT_ROLE, new CommentBoxDirectEditPolicy());
    }

    @Override
    protected IFigure createFigure() {
        CommentBoxFigure label = new CommentBoxFigure();
        Point loc = getLabel().getLocation();
        Dimension size = getLabel().getSize();
        Rectangle r = new Rectangle(loc, size);
        label.setBounds(r);
        if (label.getSize() != getLabel().getSize()) {
            label.setSize(getLabel().getSize());
        }
        return label;
    }

    /**
     * returns the model of comment box
     * 
     * @return CommentBox
     */
    private CommentBox getLabel() {
        return (CommentBox) getModel();
    }

    /**
     * return figure
     * 
     * @return figure
     */
    public IFigure getCommentBoxFigure() {
        return (CommentBoxFigure) getFigure();
    }

    @Override
    public void performRequest(Request request) {
        CommentBoxEditor commentBoxEditor = new CommentBoxEditor(
                ((CommentBoxFigure) getFigure()).getComponentCanvas().getCanvasControl().getShell(), 0,
                ((CommentBoxFigure) getFigure()), getLabel());
        commentBoxEditor.open();
    }

    @Override
    public void propertyChange(PropertyChangeEvent evt) {
        String prop = evt.getPropertyName();
        if (StringUtils.equalsIgnoreCase(prop, LABEL_CONTENTS)) {
            refreshVisuals();
        } else if (StringUtils.equalsIgnoreCase(prop, SIZE) || StringUtils.equalsIgnoreCase(prop, LOCATION)) {
            Point loc = getLabel().getLocation();
            Dimension size = getLabel().getSize();
            Rectangle r = new Rectangle(loc, size);
            ((GraphicalEditPart) getParent()).setLayoutConstraint(this, getFigure(), r);
            refreshVisuals();
        }
    }

    @Override
    protected void refreshVisuals() {
        ((CommentBoxFigure) getFigure()).setText(getLabel().getLabelContents(), (CommentBox) getModel());
    }

}