AbstractPaginationRenderer.java

/*
 * Copyright 2008-2009 MOPAS(Ministry of Public Administration and Security).
 *
 * 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 egovframework.rte.ptl.mvc.tags.ui.pagination;

import java.text.MessageFormat;

/**
 * AbstractPaginationRenderer.java
 * <p><b>NOTE:</b><pre> 인터페이스 PaginationRenderer의 구현 추상클래스.
 * 기본적인 페이징 기능이 구현되어 있으며, 화면에서 아래와 같이 display 된다.  
 * 
 * [처음][이전] 1 2 3 4 5 6 7 8 [다음][마지막]
 * 
 * 클래스 변수들이 각 element와 매핑이 되는데,
 * firstPageLabel = [처음]
 * previousPageLabel = [이전]
 * currentPageLabel = 현재 페이지 번호
 * otherPageLabel = 현재 페이지를 제외한 페이지 번호
 * nextPageLabel = [다음]
 * lastPageLabel = [마지막]
 * 
 * 클래스 변수값을 AbstractPaginationRenderer를 상속받은 하위 클래스에서 주게 되면, 
 * 페이징 포맷만 프로젝트 UI에 맞춰 커스터마이징 할 수 있다.
 * 자세한 사항은 개발자 메뉴얼의 개발프레임워크 실행환경/화면처리/MVC/View/Pagination Tag를 참고하라.
 * </pre>
 * @author 실행환경 개발팀 함철
 * @since 2009.06.01
 * @version 1.0
 * @see
 *
 * <pre>
 * << 개정이력(Modification Information) >>
 *   
 *   수정일      수정자           수정내용
 *  -------    --------    ---------------------------
 *   2009.05.30  함철            최초 생성
 *
 * </pre>
 */
public abstract class AbstractPaginationRenderer implements PaginationRenderer{
	
	public String firstPageLabel;
	public String previousPageLabel;
	public String currentPageLabel;
	public String otherPageLabel;
	public String nextPageLabel;
	public String lastPageLabel;
	
	public String renderPagination(PaginationInfo paginationInfo,String jsFunction){
		
		StringBuffer strBuff = new StringBuffer();
        
        int firstPageNo = paginationInfo.getFirstPageNo();
        int firstPageNoOnPageList = paginationInfo.getFirstPageNoOnPageList();
        int totalPageCount = paginationInfo.getTotalPageCount();
		int pageSize = paginationInfo.getPageSize();
		int lastPageNoOnPageList = paginationInfo.getLastPageNoOnPageList();
		int currentPageNo = paginationInfo.getCurrentPageNo();
		int lastPageNo = paginationInfo.getLastPageNo();
		
		if(totalPageCount > pageSize){
			if(firstPageNoOnPageList > pageSize){
				strBuff.append(MessageFormat.format(firstPageLabel,new Object[]{jsFunction,Integer.toString(firstPageNo)}));
				strBuff.append(MessageFormat.format(previousPageLabel,new Object[]{jsFunction,Integer.toString(firstPageNoOnPageList-1)}));
	        }else{
	        	strBuff.append(MessageFormat.format(firstPageLabel,new Object[]{jsFunction,Integer.toString(firstPageNo)}));
				strBuff.append(MessageFormat.format(previousPageLabel,new Object[]{jsFunction,Integer.toString(firstPageNo)}));
	        }
		}
		
		for(int i=firstPageNoOnPageList;i<=lastPageNoOnPageList;i++){
			if(i==currentPageNo){
        		strBuff.append(MessageFormat.format(currentPageLabel,new Object[]{Integer.toString(i)}));
        	}else{
        		strBuff.append(MessageFormat.format(otherPageLabel,new Object[]{jsFunction,Integer.toString(i),Integer.toString(i)}));
        	}
        }
        
		if(totalPageCount > pageSize){
			if(lastPageNoOnPageList < totalPageCount){
	        	strBuff.append(MessageFormat.format(nextPageLabel,new Object[]{jsFunction,Integer.toString(firstPageNoOnPageList+pageSize)}));
	        	strBuff.append(MessageFormat.format(lastPageLabel,new Object[]{jsFunction,Integer.toString(lastPageNo)}));
	        }else{
	        	strBuff.append(MessageFormat.format(nextPageLabel,new Object[]{jsFunction,Integer.toString(lastPageNo)}));
	        	strBuff.append(MessageFormat.format(lastPageLabel,new Object[]{jsFunction,Integer.toString(lastPageNo)}));
	        }
		}
		return strBuff.toString();
	}
}