fenlei

package com.bestlinkstudio.dao2;

import java.util.List;


public class PaginationStatus <T>{
private PaginationList<T> paginationList=null;
private int pageIndex=1;
private int pageSize=0;
private int maxNavigatePages=10;
private PageIndex[] navigatePages=null;
public PaginationStatus(PaginationList<T> paginationList, int pageIndex,
int pageSize) {
super();
this.paginationList = paginationList;
this.pageIndex = pageIndex;
this.pageSize = pageSize;
}

public void setMaxNavigatePages(int maxNavigatorPages) {
this.maxNavigatePages = maxNavigatorPages;
this.navigatePages=null;
}

public List<T> getItems(){
return this.paginationList.getItems();
}
public int getPageIndex(){
return this.pageIndex;
}
public int getPageSize(){
return this.pageSize;
}
public int getTotalSize(){
return this.paginationList.getTotalCount();
}
public int getPages(){
boolean y=(this.paginationList.getTotalCount() % pageSize)!=0;
return this.paginationList.getTotalCount()/pageSize+(y?1:0);
}
public PageIndex[] getNavigatePages(){
if(this.navigatePages!=null){
return this.navigatePages;
}
int ps=getPages();
if(ps==0)return new PageIndex[0];

if(ps<=this.maxNavigatePages){
navigatePages=new PageIndex[ps];
for(int i=1;i<=ps;i++){
navigatePages[i-1]=new PageIndex(String.valueOf(i),i);
}
}else{
int start=this.pageIndex-this.maxNavigatePages/2;
if(start<=0)start=1;
int end=this.pageIndex+(this.maxNavigatePages-1)/2;
if(end>this.getPages()){
end=this.getPages();
}
if(end>maxNavigatePages){
start=end-maxNavigatePages+1;
}
navigatePages=new PageIndex[end-start+1];
for(int i=start;i<=end;i++){
navigatePages[i-start]=new PageIndex(String.valueOf(i),i);
}
}
return navigatePages;
}

public PageIndex getFirstPage(){
boolean enabled=this.getTotalSize()>0 && this.pageIndex>1;
return new PageIndex("首页",1,enabled);
}
public PageIndex getPrevPage(){
boolean enabled=this.getTotalSize()>0 && this.pageIndex>1;
return new PageIndex("前一页",this.pageIndex-1,enabled);
}
public PageIndex getNextPage(){
boolean enabled=this.getTotalSize()>0 && this.pageIndex<this.getPages();
return new PageIndex("下一页",this.pageIndex+1,enabled);
}
public PageIndex getLastPage(){
int lastPageIndex=this.getPages();
boolean enabled=this.getTotalSize()>0 && this.pageIndex!=lastPageIndex;
return new PageIndex("末页",lastPageIndex,enabled);
}
}