/**********************************************************************
 * Copyright (c) 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
  *
 * Contributors:
 *    IBM - Initial API and implementation
 **********************************************************************/
package net.sourceforge.phpdt.httpquery.preferences;

import net.sourceforge.phpdt.httpquery.config.IConfiguration;

import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.swt.graphics.Image;

/**
 * Configuration table label provider.
 */
public class ConfigurationTableLabelProvider implements ITableLabelProvider {
  /**
   * ConfigurationTableLabelProvider constructor comment.
   */
  public ConfigurationTableLabelProvider() {
    super();
  }

  /**
   * Adds a listener to this label provider. Has no effect if an identical listener is already registered.
   * <p>
   * Label provider listeners are informed about state changes that affect the rendering of the viewer that uses this label
   * provider.
   * </p>
   *
   * @param listener
   *          a label provider listener
   */
  public void addListener(ILabelProviderListener listener) {
  }

  /**
   * Disposes of this label provider. When a label provider is attached to a viewer, the viewer will automatically call this method
   * when the viewer is being closed. When label providers are used outside of the context of a viewer, it is the client's
   * responsibility to ensure that this method is called when the provider is no longer needed.
   */
  public void dispose() {
  }

  /**
   * Returns the label image for the given column of the given element.
   *
   * @param element
   *          the object representing the entire row, or <code>null</code> indicating that no input object is set in the viewer
   * @param columnIndex
   *          the zero-based index of the column in which the label appears
   */
  public Image getColumnImage(Object element, int columnIndex) {
    return null;
  }

  /**
   * Returns the label text for the given column of the given element.
   *
   * @param element
   *          the object representing the entire row, or <code>null</code> indicating that no input object is set in the viewer
   * @param columnIndex
   *          the zero-based index of the column in which the label appears
   */
  public String getColumnText(Object element, int columnIndex) {
    IConfiguration configuration = (IConfiguration) element;
    if (columnIndex == 0) {
      return configuration.getName();
    } else if (columnIndex == 1)
      return configuration.getType();
//    else if (columnIndex == 2)
//      return configuration.getUser();
    else if (columnIndex == 2)
      return configuration.getURL();
    else
      return "X";
  }

  protected String notNull(String s) {
    if (s != null)
      return s;
    else
      return "";
  }

  /**
   * Returns whether the label would be affected by a change to the given property of the given element. This can be used to
   * optimize a non-structural viewer update. If the property mentioned in the update does not affect the label, then the viewer
   * need not update the label.
   *
   * @param element
   *          the element
   * @param property
   *          the property
   * @return <code>true</code> if the label would be affected, and <code>false</code> if it would be unaffected
   */
  public boolean isLabelProperty(Object element, String property) {
    return false;
  }

  /**
   * Removes a listener to this label provider. Has no affect if an identical listener is not registered.
   *
   * @param listener
   *          a label provider listener
   */
  public void removeListener(ILabelProviderListener listener) {
  }
}