edu.caltech.ipac.firefly.ui.DisabledPane.java Source code

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Here is the source code for edu.caltech.ipac.firefly.ui.DisabledPane.java

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

import com.google.gwt.event.logical.shared.ResizeHandler;
import com.google.gwt.event.logical.shared.ResizeEvent;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.AbsolutePanel;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.Widget;

/**
 * @author Trey Roby
 * @version $Id: DisabledPane.java,v 1.2 2009/08/21 17:18:55 roby Exp $
 */
public class DisabledPane extends Component {

    private AbsolutePanel panel = new AbsolutePanel();
    private FlowPanel labelPanel = new FlowPanel();
    private Widget messageWidget;

    private BrowserHandler _blist;

    /**
     *
     * @param messageWidget  widget
     *
     * */
    public DisabledPane(Widget messageWidget) {

        _blist = new BrowserHandler();

        this.messageWidget = messageWidget;
        this.initWidget(panel);

        build();

    }

    public void setPixelSize(int width, int height) {
        super.setPixelSize(width, height);
        locateMask();
    }

    public void build() {
        panel.setStyleName("firefly-disable-panel");

        labelPanel.add(messageWidget);
        labelPanel.setStyleName("maskingMessage-ui");
        panel.add(labelPanel, 0, 0);

        locateMask();
        Window.addResizeHandler(_blist);
    }

    @Override
    protected void onLoad() {
        super.onLoad();
        locateMask();
    }

    public void update() {
        locateMask();
    }

    private void locateMask() {
        final int w = labelPanel.getOffsetWidth();
        final int h = labelPanel.getOffsetHeight();
        if (w > 0 || h > 0) {
            int left = panel.getOffsetWidth() / 2 - w / 2;
            int top = panel.getOffsetHeight() / 2 - h / 2;
            panel.setWidgetPosition(labelPanel, left, top);

            //            panel.setWidth(w+"px");
            //            panel.setHeight(h+"px");
        }
    }

    private int reloCnt = 0;

    private class BrowserHandler implements ResizeHandler {
        public void onResize(ResizeEvent event) {
            reloCnt++;
            locateMask();
        }

    }

}