ru.ksu.niimm.cll.mocassin.frontend.viewer.client.NodeExplorer.java Source code

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Here is the source code for ru.ksu.niimm.cll.mocassin.frontend.viewer.client.NodeExplorer.java

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/*******************************************************************************
 * Copyright (c) 2010-2012 Nikita Zhiltsov.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/gpl.html
 * 
 * Contributors:
 *     Nikita Zhiltsov - initial API and implementation
 *     Azat Khasanshin - implementation
 ******************************************************************************/
package ru.ksu.niimm.cll.mocassin.frontend.viewer.client;

import java.util.List;

import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.uibinder.client.UiHandler;
import com.google.gwt.uibinder.client.UiTemplate;
import com.google.gwt.user.client.ui.Anchor;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.DialogBox;
import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.Label;

public class NodeExplorer {
    @UiTemplate("NodeExplorer.ui.xml")
    interface Binder extends UiBinder<DialogBox, NodeExplorer> {
    }

    private static Binder uiBinder = GWT.create(Binder.class);

    private ViewerConstants constants = GWT.create(ViewerConstants.class);

    @UiField
    Button closeButton;
    @UiField
    Label titleLabel;
    @UiField
    Label uriLabel;
    @UiField
    Label typeLabel;
    @UiField
    Anchor goLink;
    @UiField
    DialogBox dialog;
    @UiField
    FlexTable relationTable;

    private Node currentNode;

    private List<RelationMetadata> relations;

    public NodeExplorer() {
        uiBinder.createAndBindUi(this);
    }

    public void show() {
        titleLabel.setText(currentNode.getName());
        uriLabel.setText(currentNode.getUri());
        typeLabel.setText(SegmentTypes.getLabel(currentNode.getNodeType()));
        if (currentNode.getNumPage() == 0) {
            goLink.setVisible(false);
        } else {
            goLink.setVisible(true);
            goLink.setText(constants.goLink() + " " + currentNode.getNumPage());
        }
        relationTable.clear();
        relationTable.setWidget(0, 0, new HTML("<b>Domain</b>"));
        relationTable.setWidget(0, 1, new HTML("<b>Relation</b>"));
        relationTable.setWidget(0, 2, new HTML("<b>Range</b>"));
        int i = 1;
        for (final RelationMetadata rel : relations) {
            boolean isCurrentFirst = rel.getFrom() == currentNode;
            Label from = null;
            Label to = null;
            if (isCurrentFirst) {
                from = new Label("this");
                from.setStyleName("thisNodeLabel");
                to = new Label(rel.getTo().getName());
                to.addClickHandler(new ClickHandler() {
                    @Override
                    public void onClick(ClickEvent event) {
                        dialog.hide();
                        App.eventBus.fireEvent(new GraphEvent(rel.getTo()));
                    }
                });
                to.setStyleName("viewNodeLink");
            } else {
                to = new Label("this");
                to.setStyleName("thisNodeLabel");
                from = new Label(rel.getFrom().getName());
                from.addClickHandler(new ClickHandler() {
                    @Override
                    public void onClick(ClickEvent event) {
                        dialog.hide();
                        App.eventBus.fireEvent(new GraphEvent(rel.getFrom()));
                    }
                });
                from.setStyleName("viewNodeLink");
            }
            relationTable.setWidget(i, 0, from);
            relationTable.setWidget(i, 1, new Label(rel.getType().toString()));
            relationTable.setWidget(i, 2, to);
            i++;
        }
        dialog.center();
        dialog.show();
    }

    public void setCurrentNode(Node currentNode) {
        this.currentNode = currentNode;
    }

    public void setRelations(List<RelationMetadata> relations) {
        this.relations = relations;
    }

    @UiHandler({ "closeButton", "goLink" })
    void handleClick(ClickEvent event) {
        if (event.getSource() == goLink) {
            NavigationEvent navigationEvent = new NavigationEvent(currentNode.getUri(),
                    currentNode.getNumPage() - 1);
            App.eventBus.fireEvent(navigationEvent);
        }
        dialog.hide();
    }
}