org.kalypso.simulation.ui.calccase.jface.CalcCaseTableTreeViewer.java Source code

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Here is the source code for org.kalypso.simulation.ui.calccase.jface.CalcCaseTableTreeViewer.java

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/*--------------- Kalypso-Header --------------------------------------------------------------------
    
 This file is part of kalypso.
 Copyright (C) 2004, 2005 by:
    
 Technical University Hamburg-Harburg (TUHH)
 Institute of River and coastal engineering
 Denickestr. 22
 21073 Hamburg, Germany
 http://www.tuhh.de/wb
    
 and
     
 Bjoernsen Consulting Engineers (BCE)
 Maria Trost 3
 56070 Koblenz, Germany
 http://www.bjoernsen.de
    
 This library 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 2.1 of the License, or (at your option) any later version.
    
 This library 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 this library; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    
 Contact:
    
 E-Mail:
 belger@bjoernsen.de
 schlienger@bjoernsen.de
 v.doemming@tuhh.de
     
 ---------------------------------------------------------------------------------------------------*/
package org.kalypso.simulation.ui.calccase.jface;

import org.eclipse.core.resources.IFolder;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.viewers.TreeViewerColumn;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeItem;
import org.kalypso.contribs.eclipse.jface.viewers.FolderModifiedSorter;
import org.kalypso.contribs.eclipse.jface.viewers.FolderNameSorter;
import org.kalypso.contribs.eclipse.swt.widgets.ColumnViewerSorter;
import org.kalypso.simulation.ui.i18n.Messages;

/**
 * A Table tree viewer, showing calc cases in a tree with additional column 'modiifed since'.
 * 
 * @author Gernot Belger
 */
public final class CalcCaseTableTreeViewer {
    private CalcCaseTableTreeViewer() {
    }

    public static void configureTreeViewer(final TreeViewer viewer) {
        configureTreeViewer(viewer, null);
    }

    public static void configureTreeViewer(final TreeViewer viewer, final IFolder markedCalcCase) {
        final Tree tree = viewer.getTree();
        tree.setHeaderVisible(true);

        final Color markedColor = tree.getDisplay().getSystemColor(SWT.COLOR_YELLOW);
        viewer.setContentProvider(new CalcCaseTreeContentProvider());

        final TreeViewerColumn forecastColumn = new TreeViewerColumn(viewer, SWT.NONE);
        final String forecastLabel = Messages
                .getString("org.kalypso.simulation.ui.calccase.jface.CalcCaseTableTreeViewer.1"); //$NON-NLS-1$
        forecastColumn.getColumn().setText(forecastLabel);

        ColumnViewerSorter.registerSorter(forecastColumn, new FolderNameSorter());

        final TreeViewerColumn timeColumn = new TreeViewerColumn(viewer, SWT.NONE);
        final String timeLabel = Messages
                .getString("org.kalypso.simulation.ui.calccase.jface.CalcCaseTableTreeViewer.2"); //$NON-NLS-1$
        timeColumn.getColumn().setText(timeLabel);
        ColumnViewerSorter.registerSorter(timeColumn, new FolderModifiedSorter());

        // Always sort by time initially
        ColumnViewerSorter.setSortState(timeColumn, Boolean.TRUE);

        viewer.setLabelProvider(new CalcCaseTableLabelProvider(markedCalcCase, markedColor));
    }

    public static boolean isEmpty(final TreeViewer viewer) {
        final Object input = viewer.getInput();
        final ITreeContentProvider contentProvider = (ITreeContentProvider) viewer.getContentProvider();
        return contentProvider.getElements(input).length == 0;
    }

    public static void selectFirst(final TreeViewer viewer) {
        final TreeItem[] items = viewer.getTree().getItems();
        if (items.length > 0)
            viewer.setSelection(new StructuredSelection(items[0].getData()));
    }
}