myviewerfilter.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 com.s10r.manager.model.ItemLabel;
import com.s10r.manager.model.ManagerItem;
import com.s10r.manager.model.PasswordEntry;

import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerFilter;

/**
 * @author schoffem
 */
public class MyViewerFilter extends ViewerFilter
{
	private String filterText;

	private ItemLabel filterLabel;

	@Override
	public boolean select(Viewer viewer, Object parentElement, Object element)
	{
		ManagerItem entry = (ManagerItem) element;

		// filter on a label if the filter label is set, and either the item
		// is a label, or is a password entry and the entry does not have
		// the filter label assigned.
		boolean filterOnLabel = filterLabel != null
				&& (entry instanceof ItemLabel || (entry instanceof PasswordEntry && !((PasswordEntry) entry)
						.hasLabel(filterLabel)));

		// filter on text if the filter text is set and the entry's name
		// does not match the filter text (partial match)
		boolean filterOnText = filterText != null && filterText.length() > 0
				&& !(entry.getName().toLowerCase().indexOf(filterText) >= 0);

		if (filterOnLabel || filterOnText)
		{
			// filter out
			return false;
		}
		else
		{
			// select
			return true;
		}
	}

	/**
	 * @param filter
	 *            the filter to set
	 * @uml.property name="filter"
	 */
	public void setFilter(String filter)
	{
		this.filterText = filter;
	}

	public void setFilter(ItemLabel label)
	{
		this.filterLabel = label;
	}
}