edu.caltech.ipac.firefly.visualize.FloatingStatusBar.java Source code

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Here is the source code for edu.caltech.ipac.firefly.visualize.FloatingStatusBar.java

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/*
 * License information at https://github.com/Caltech-IPAC/firefly/blob/master/License.txt
 */
package edu.caltech.ipac.firefly.visualize;

import com.google.gwt.event.dom.client.MouseOverEvent;
import com.google.gwt.event.dom.client.MouseOverHandler;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.DeferredCommand;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Widget;
import edu.caltech.ipac.firefly.resbundle.images.IconCreator;
import edu.caltech.ipac.firefly.ui.PopupPane;
import edu.caltech.ipac.firefly.ui.PopupType;
import edu.caltech.ipac.firefly.util.event.Name;
import edu.caltech.ipac.firefly.util.event.WebEvent;
import edu.caltech.ipac.firefly.util.event.WebEventListener;
import edu.caltech.ipac.firefly.util.event.WebEventManager;

/**
 * Created by IntelliJ IDEA.
 * User: tlau
 * Date: Jun 1, 2012
 * Time: 2:56:41 PM
 * To change this template use File | Settings | File Templates.
 */
public class FloatingStatusBar {
    private final PopupPane popup;
    private final PlotWidgetGroup group;
    private boolean dropClosed = true;
    private HandlerRegistration hreg = null;
    private HTML status = new HTML();
    private boolean showing = false;

    public FloatingStatusBar(PlotWidgetGroup group, Widget alignWidget) {
        this.group = group;
        IconCreator _ic = IconCreator.Creator.getInstance();
        HorizontalPanel panel = new HorizontalPanel();
        popup = new PopupPane("", panel, PopupType.LOW_PROFILE, false, false, false, PopupPane.HeaderType.NONE);
        updateAlignWidget(alignWidget);
        popup.setDoRegionChangeHide(false);
        panel.setSpacing(3);
        panel.add(status);

        WebEventManager.getAppEvManager().addListener(Name.DROPDOWN_CLOSE, new WebEventListener() {
            public void eventNotify(WebEvent ev) {
                DeferredCommand.add(new Command() {
                    public void execute() {
                        dropClosed = true;
                        if (showing)
                            popup.show();
                    }
                });
            }
        });

        WebEventManager.getAppEvManager().addListener(Name.DROPDOWN_OPEN, new WebEventListener() {
            public void eventNotify(WebEvent ev) {
                DeferredCommand.add(new Command() {
                    public void execute() {
                        dropClosed = false;
                        if (showing)
                            popup.hide();
                    }
                });
            }
        });
    }

    public void updateAlignWidget(Widget w) {
        if (hreg != null) {
            hreg.removeHandler();
            hreg = null;
        }
        popup.alignTo(w, PopupPane.Align.BOTTOM_LEFT, 0, 0);
        hreg = w.addDomHandler(new MouseOverHandler() {
            public void onMouseOver(MouseOverEvent event) {
                if (dropClosed)
                    popup.show();
            }
        }, MouseOverEvent.getType());
    }

    public void updateStatus(String msg) {
        status.setHTML(msg);
        if (!popup.isVisible())
            popup.show();
    }

    public void show() {
        showing = true;
        popup.show();
    }

    public void hide() {
        showing = false;
        popup.hide();
    }

}