Add style to Notebook that matches current theme.

[online-glom:gwt-glom.git] / src / main / java / org / glom / web / client / ui / details / Notebook.java

/*
 * Copyright (C) 2011 Openismus GmbH
 *
 * This file is part of GWT-Glom.
 *
 * GWT-Glom is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.
 *
 * GWT-Glom 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 Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with GWT-Glom.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.glom.web.client.ui.details;

import org.glom.web.client.Utils;
import org.glom.web.shared.layout.LayoutGroup;
import org.glom.web.shared.layout.LayoutItem;
import org.glom.web.shared.layout.LayoutItemNotebook;

import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.TabLayoutPanel;
import com.google.gwt.user.client.ui.Widget;

/**
 * @author Ben Konrath <ben@bagu.org>
 * 
 */
public class Notebook extends Group {

        @SuppressWarnings("unused")
        private Notebook() {
                // disable default constructor
        }

        /**
         * Create a new Notebook widget based on the specified LayoutItemNotebook DTO.
         * 
         * @param layoutItemNotebook
         */
        public Notebook(LayoutItemNotebook layoutItemNotebook) {
                TabLayoutPanel tabPanel = new TabLayoutPanel(1.6, Unit.EM);

                int maxChildHeight = 0;
                for (LayoutItem layoutItem : layoutItemNotebook.getItems()) {
                        if (!(layoutItem instanceof LayoutGroup))
                                // Ignore non-LayoutGroup items. This is what Glom 1.18 does.
                                continue;

                        Widget child = createChildWidget(layoutItem, false, false);

                        // update the maximum value of the child height if required
                        int childHeight = Utils.getWidgetHeight(child);
                        if (childHeight > maxChildHeight)
                                maxChildHeight = childHeight;

                        tabPanel.add(child, layoutItem.getTitle());
                }

                // Set the first tab as the default tab.
                tabPanel.selectTab(0);

                // The height needs to be set of the TabLayoutPanel to work.
                // Use the max child height plus a few extra pixels for padding.
                tabPanel.setHeight((maxChildHeight + 6) + "px");

                FlowPanel mainPanel = getMainPanel();
                mainPanel.add(tabPanel);
                initWidget(mainPanel);
        }
}