org.freemedsoftware.gwt.client.widget.ClosableTab.java Source code

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Here is the source code for org.freemedsoftware.gwt.client.widget.ClosableTab.java

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/*
 * $Id$
 *
 * Authors:
 *      Jeff Buchbinder <jeff@freemedsoftware.org>
 *
 * FreeMED Electronic Medical Record and Practice Management System
 * Copyright (C) 1999-2012 FreeMED Software Foundation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

package org.freemedsoftware.gwt.client.widget;

import org.freemedsoftware.gwt.client.ScreenInterface;
import org.freemedsoftware.gwt.client.i18n.AppConstants;

import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HasVerticalAlignment;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.TabPanel;
import com.google.gwt.user.client.ui.Widget;

public class ClosableTab extends Composite {

    protected Widget widget;

    protected ClosableTabInterface closableTabInterface;

    public ClosableTab(String labelText, Widget w) {
        this(labelText, w, null);
    }

    public ClosableTab(String labelText, Widget w, ClosableTabInterface cTI) {
        // Store in namespace where we can see it later
        widget = w;
        closableTabInterface = cTI;

        final HorizontalPanel panel = new HorizontalPanel();
        initWidget(panel);

        final Label label = new Label(labelText);
        label.setStyleName(AppConstants.STYLE_LABEL_TAB);
        panel.add(label);
        panel.setTitle(labelText);
        panel.setCellHorizontalAlignment(label, HasHorizontalAlignment.ALIGN_LEFT);
        panel.setCellVerticalAlignment(label, HasVerticalAlignment.ALIGN_TOP);

        final Image image = new Image();
        image.setUrl("resources/images/close_x.16x16.png");

        // Create spacer
        panel.add(new HTML("&nbsp;"));

        panel.add(image);
        panel.setCellVerticalAlignment(image, HasVerticalAlignment.ALIGN_TOP);
        panel.setCellHorizontalAlignment(image, HasHorizontalAlignment.ALIGN_RIGHT);

        image.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent evt) {
                boolean goodToGo = true;
                // If we have a ClosableTabInterface, make sure it's ready to
                // die
                if (closableTabInterface != null) {
                    goodToGo = closableTabInterface.isReadyToClose();
                }
                if (goodToGo) {
                    if (closableTabInterface != null) {
                        closableTabInterface.onClose();
                    }
                    TabPanel t = ((TabPanel) widget.getParent().getParent().getParent());
                    t.selectTab(t.getWidgetIndex(widget) - 1);
                    widget.removeFromParent();

                    // If we're dealing with PatientScreen, remove from mapping
                    if (widget instanceof ScreenInterface) {
                        ScreenInterface screen = (ScreenInterface) widget;
                        screen.closeScreen();
                    }
                }
            }
        });
    }

}