org.eclipse.wst.server.ui.internal.viewers.LockedTableViewer.java Source code

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Here is the source code for org.eclipse.wst.server.ui.internal.viewers.LockedTableViewer.java

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/*******************************************************************************
 * Copyright (c) 2003, 2010 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - Initial API and implementation
 *******************************************************************************/
package org.eclipse.wst.server.ui.internal.viewers;

import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableItem;
import org.eclipse.swt.widgets.Widget;
import org.eclipse.swt.widgets.Display;

/**
 *
 */
public class LockedTableViewer extends TableViewer {
    protected Color color;

    public LockedTableViewer(Composite parent) {
        super(parent);
        createColor(parent);
    }

    public LockedTableViewer(Composite parent, int style) {
        super(parent, style);
        createColor(parent);
    }

    public LockedTableViewer(Table table) {
        super(table);
        createColor(table);
    }

    protected void createColor(Control c) {
        if (Display.getDefault().getHighContrast())
            color = new Color(c.getDisplay(), 0, 0, 0);
        else
            color = new Color(c.getDisplay(), 255, 255, 225);
        c.addDisposeListener(new DisposeListener() {
            public void widgetDisposed(DisposeEvent e) {
                color.dispose();
            }
        });
    }

    public void doUpdateItem(Widget widget, Object element, boolean fullMap) {
        if (color == null)
            return;
        if (widget instanceof TableItem) {
            TableItem item = (TableItem) widget;
            if (getLabelProvider() instanceof ILockedLabelProvider) {
                ILockedLabelProvider provider = (ILockedLabelProvider) getLabelProvider();
                if (provider.isLocked(element)) {
                    item.setBackground(color);
                    item.setImage(0, null);
                } else
                    item.setBackground(null);
            }
        }
        super.doUpdateItem(widget, element, fullMap);
    }
}