at.ait.dme.yuma.client.image.ImageComposite.java Source code

Introduction

Here is the source code for at.ait.dme.yuma.client.image.ImageComposite.java

Source

/*
 * Copyright 2008-2010 Austrian Institute of Technology
 *
 * Licensed under the EUPL, Version 1.1 or - as soon they
 * will be approved by the European Commission - subsequent
 * versions of the EUPL (the "Licence");
 * you may not use this work except in compliance with the
 * Licence.
 * You may obtain a copy of the Licence at:
 *
 * http://ec.europa.eu/idabc/eupl
 *
 * Unless required by applicable law or agreed to in
 * writing, software distributed under the Licence is
 * distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied.
 * See the Licence for the specific language governing
 * permissions and limitations under the Licence.
 */

package at.ait.dme.yuma.client.image;

import at.ait.dme.yuma.client.image.annotation.ImageAnnotation;
import at.ait.dme.yuma.client.image.annotation.handler.selection.HasImageAnnotationSelectionHandlers;
import at.ait.dme.yuma.client.image.annotation.handler.selection.ImageAnnotationSelectionEvent;
import at.ait.dme.yuma.client.image.annotation.handler.selection.ImageAnnotationSelectionHandler;
import at.ait.dme.yuma.client.image.shape.Shape;

import com.google.gwt.event.dom.client.HasLoadHandlers;
import com.google.gwt.event.shared.HandlerManager;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.ui.Composite;

/**
 * Base class for image composites
 * 
 * @author Christian Sadilek
 */
public abstract class ImageComposite extends Composite
        implements HasImageAnnotationSelectionHandlers, HasLoadHandlers {

    final protected HandlerManager handlerManager = new HandlerManager(this);

    @Override
    public HandlerRegistration addImageAnnotationSelectionHandler(ImageAnnotationSelectionHandler handler) {
        return handlerManager.addHandler(ImageAnnotationSelectionEvent.getType(), handler);
    }

    /**
     * get the active image fragment
     * 
     * @return the active fragment
     */
    public ImageFragment getImageFragment() {
        Shape shape = getActiveShape();
        if (shape == null)
            return null;

        return new ImageFragment(getVisibleRect(), getImageRect(), getActiveShape());
    }

    public abstract ImageRect getImageRect();

    public abstract ImageRect getVisibleRect();

    public abstract Shape getActiveShape();

    public abstract void showFragment(ImageAnnotation annotation);

    public abstract void selectFragment(ImageAnnotation annotation, boolean selected);

    public abstract void hideFragment(ImageAnnotation annotation);

    public abstract void showActiveFragmentPanel(ImageAnnotation annotation, boolean forceVisible);

    public abstract void hideActiveFragmentPanel();
}