pager.java

有简单的网上书店需求及设计流程

package org.wiely.commons;

@SuppressWarnings("unused")
public class Pager {
	private int currentPage;
	private int totalSize;
	private int pageSize = 5;
	private int totalPage;

	private boolean hasFirst;
	private boolean hasNext;
	private boolean hasPrevious;
	private boolean hasLast;

	public Pager(int currentPage, int totalSize) {
		this.currentPage = currentPage;
		this.totalSize = totalSize;
	}

	public int getCurrentPage() {
		return currentPage;
	}

	public void setCurrentPage(int currentPage) {
		this.currentPage = currentPage;
	}

	public int getTotalSize() {
		return totalSize;
	}

	public void setTotalSize(int totalSize) {
		this.totalSize = totalSize;
	}

	public int getPageSize() {
		return pageSize;
	}

	public void setPageSize(int pageSize) {
		this.pageSize = pageSize;
	}

	public int getTotalPage() {
		totalPage = totalSize / pageSize;
		if (totalSize % pageSize != 0) {
			totalPage++;
		}

		return totalPage;
	}

	public void setTotalPage(int totalPage) {
		this.totalPage = totalPage;
	}

	public boolean isHasFirst() {
		if (currentPage == 1)
			return false;

		return true;
	}

	public void setHasFirst(boolean hasFirst) {
		this.hasFirst = hasFirst;
	}

	public boolean isHasNext() {
		if (isHasLast())
			return true;

		return false;
	}

	public void setHasNext(boolean hasNext) {
		this.hasNext = hasNext;
	}

	public boolean isHasPrevious() {

		if (isHasFirst())
			return true;
		return false;
	}

	public void setHasPrevious(boolean hasPrevious) {
		this.hasPrevious = hasPrevious;
	}

	public boolean isHasLast() {

		if (currentPage == getTotalPage())
			return false;
		return true;
	}

	public void setHasLast(boolean hasLast) {
		this.hasLast = hasLast;
	}
}