viewlabelprovider.java

基于Eclipse RCP开发的管理工具

/*  
 * Copyright 2006 Marcel Schoffelmeer 
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); 
 * you may not use this file except in compliance with the License. 
 * You may obtain a copy of the License at 
 * 
 *    http://www.apache.org/licenses/LICENSE-2.0 
 *    
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, 
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.s10r.manager;

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

import com.s10r.manager.model.ItemContainer;
import com.s10r.manager.model.ItemLabel;
import com.s10r.manager.model.ManagerItem;
import com.s10r.manager.model.PasswordEntry;
import com.s10r.util.DateUtil;

/**
 * The content provider class is responsible for providing objects to the view.
 * It can wrap existing objects in adapters or simply return objects as-is.
 * These objects may be sensitive to the current input of the view, or ignore it
 * and always show the same content (like Task List, for example).
 */
public class ViewLabelProvider implements ITableLabelProvider
{
	private static final int NAME_COLUMN_IDX = 0;
	private static final int ID_COLUMN_IDX = 1;
	private static final int PASSWORD_COLUMN_IDX = 2;
	private static final int DESCRIPTION_COLUMN_IDX = 3;
	private static final int USAGE_CNT_COLUMN_IDX = 4;
	private static final int LAST_USED_COLUMN_IDX = 5;
	private static final int LAST_UPDATED_IDX = 6;
	private static final int LAST_UPDATED_ON_SITE_IDX = 7;
	private static final int URL_IDX = 8;
	private static final int LABELS_IDX = 9;

	ItemContainer entries = null;

	private Image passwordEntryImage;

	private Image labelImage;

	public ViewLabelProvider(ItemContainer entries2)
	{
		this.entries = entries2;

		passwordEntryImage = AbstractUIPlugin.imageDescriptorFromPlugin(
		// Application.PLUGIN_ID, "icons/enum_obj.gif").createImage();
				Application.PLUGIN_ID, "icons/key.png").createImage();
		labelImage = AbstractUIPlugin.imageDescriptorFromPlugin(
						Application.PLUGIN_ID, "icons/tag_blue.png").createImage();
	}

	public String getColumnText(Object obj, int index)
	{
		ManagerItem mi = (ManagerItem) obj;

		// generic properties
		switch (index)
		{
			case NAME_COLUMN_IDX:
			{
				return mi.getName();
			}
			case DESCRIPTION_COLUMN_IDX:
			{
				return mi.getDescription();
			}
			case LAST_UPDATED_IDX:
			{
				if (mi.getLastUpdated() != null)
				{
					return DateUtil.format(mi.getLastUpdated());
				}
				else
				{
					return "";
				}
			}
			default:
			{
				// handled below
			}
		}

		// password properties
		if (obj instanceof PasswordEntry)
		{

			PasswordEntry pe = (PasswordEntry) obj;

			switch (index)
			{
				case ID_COLUMN_IDX:
				{
					if (isShowIds())
					{
						return pe.getId();
					}
					else if (pe.getId() != null && pe.getId().length() > 0)
					{
						return "****";
					}
					else
					{
						return "";
					}

				}
				case PASSWORD_COLUMN_IDX:
				{
					if (pe.getPassword() != null
							&& pe.getPassword().length() > 0)
					{
						return "****";
					}
					else
					{
						return "";
					}
				}
				case USAGE_CNT_COLUMN_IDX:
				{
					return "" + (pe.getUsageCnt() > 0 ? pe.getUsageCnt() : "");
				}
				case LAST_USED_COLUMN_IDX:
				{
					if (pe.getLastUsed() != null)
					{
						return DateUtil.format(pe.getLastUsed());
					}
					else
					{
						return "";
					}
				}
				case LAST_UPDATED_ON_SITE_IDX:
				{
					return "" + pe.getPasswordAge();
				}
				case URL_IDX:
				{
					return pe.getUrl();
				}
				case LABELS_IDX:
				{
					return  pe.getLabelsString();				
				}
				default:
				{
					throw new IllegalArgumentException("invalid column index: "
							+ index);
				}
			}
		}
		
		return "-"; // NA (labels)

	}


	private boolean isShowIds()
	{
		// TODO Auto-generated method stub
		return false;
	}

	public Image getColumnImage(Object obj, int index)
	{
		if (index == 0)
		{
			return getImage(obj);
		}
		else
		{
			return null;
		}
	}

	/**
	 * For now only returns the password entry image because that's the only
	 * type of element the table can contain.
	 * 
	 * @param obj
	 * @return
	 */
	public Image getImage(Object obj)
	{
		// TODO: remove usage of instanceof usage: see RCP book
		
		if (obj instanceof PasswordEntry)
		{
		   return passwordEntryImage;
		}
		else if (obj instanceof ItemLabel)
		{
			return labelImage;
		}
		else
		{
			return null;
		}
	}

	public void addListener(ILabelProviderListener listener)
	{
		// TODO Auto-generated method stub

	}

	public void dispose()
	{
		// TODO Auto-generated method stub

	}

	public boolean isLabelProperty(Object element, String property)
	{
		// TODO Auto-generated method stub
		return false;
	}

	public void removeListener(ILabelProviderListener listener)
	{
		// TODO Auto-generated method stub

	}
}