at.ait.dme.yuma.suite.apps.map.client.georeferencing.ControlPointPanel.java Source code

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Here is the source code for at.ait.dme.yuma.suite.apps.map.client.georeferencing.ControlPointPanel.java

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/*
 * 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.suite.apps.map.client.georeferencing;

import java.util.Collection;

import org.gwt.mosaic.ui.client.MessageBox;

import com.google.gwt.core.client.GWT;
import com.google.gwt.i18n.client.LocaleInfo;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.PushButton;
import com.google.gwt.user.client.ui.Widget;

import at.ait.dme.yuma.suite.apps.core.client.I18NErrorMessages;
import at.ait.dme.yuma.suite.apps.core.client.YUMACoreProperties;
import at.ait.dme.yuma.suite.apps.core.client.events.AnnotateClickHandler;
import at.ait.dme.yuma.suite.apps.core.shared.model.Annotation;
import at.ait.dme.yuma.suite.apps.core.shared.model.User;
import at.ait.dme.yuma.suite.apps.core.shared.server.annotation.AnnotationService;
import at.ait.dme.yuma.suite.apps.core.shared.server.annotation.AnnotationServiceAsync;
import at.ait.dme.yuma.suite.apps.map.client.TileBasedImageViewer;
import at.ait.dme.yuma.suite.apps.map.client.annotation.MapAnnotationPanel;
import at.ait.dme.yuma.suite.apps.map.client.treeview.MapAnnotationTreeNode;

/**
 * Composite used to manage control points
 * 
 * @author Christian Sadilek
 * @author Rainer Simon
 */
public class ControlPointPanel extends MapAnnotationPanel {

    /**
     * 'Create control point' button
     */
    private PushButton createButton;

    public ControlPointPanel(TileBasedImageViewer imageViewer) {
        super(imageViewer, new ControlPointEditForm(imageViewer.getControlPointLayer()),
                new MapAnnotationTreeNode());
    }

    @Override
    protected Widget createHeader() {
        // The parent header panel
        FlowPanel header = new FlowPanel();

        // 'Help geo-Reference' label
        Label addAnnotationLabel = new Label(YUMACoreProperties.getConstants().helpGeoreference());
        addAnnotationLabel.setStyleName("imageAnnotation-add-annotation");
        header.add(addAnnotationLabel);

        // 'Help' link
        HTML help = new HTML(
                "<a target=\"_blank\" href=\"userguide_" + LocaleInfo.getCurrentLocale().getLocaleName()
                        + ".html\">" + YUMACoreProperties.getConstants().help() + "</a>");
        help.setStyleName("imageAnnotation-help");
        header.add(help);

        // Instructions text
        Label addAnnotationHint = new Label(YUMACoreProperties.getConstants().helpGeoreferenceHint());
        addAnnotationHint.setStyleName("imageAnnotation-add-annotation-hint");
        header.add(addAnnotationHint);

        // Button panel
        HorizontalPanel buttons = new HorizontalPanel();

        // 'Create Control Point' button
        createButton = new PushButton(YUMACoreProperties.getConstants().actionCreateCP());
        createButton.setStyleName("imageAnnotation-button");
        createButton.addClickHandler(new AnnotateClickHandler(this, null, null, false));
        createButton.setEnabled(!User.get().isAnonymous());
        buttons.add(createButton);

        if (YUMACoreProperties.getObjectURI().startsWith("http://georeferencer"))
            createButton.setEnabled(false);

        header.add(buttons);

        // Placeholder for the annotation form 
        header.add(editFormPanel);

        return header;
    }

    @Override
    protected void loadAnnotations() {
        AnnotationServiceAsync imageAnnotationService = (AnnotationServiceAsync) GWT
                .create(AnnotationService.class);

        imageAnnotationService.listAnnotations(YUMACoreProperties.getObjectURI(),
                new AsyncCallback<Collection<Annotation>>() {
                    public void onFailure(Throwable t) {
                        I18NErrorMessages errorMessages = (I18NErrorMessages) GWT.create(I18NErrorMessages.class);
                        MessageBox.error(errorMessages.error(),
                                errorMessages.failedToReadAnnotations() + " (" + t.getMessage() + ")");
                    }

                    public void onSuccess(Collection<Annotation> foundAnnotations) {
                        annotationTree.removeItems();

                        for (Annotation a : foundAnnotations) {
                            if (isControlPoint(a)) {
                                annotationTree.addAnnotation(a);
                            }
                        }

                        treePanel.add(annotationTree);
                        disableLoadingImage();
                        layout();
                    }
                });
    }

}