PaginationDirective.java

package com.hongqiang.shop.common.template;

import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;

import org.springframework.stereotype.Component;

import com.hongqiang.shop.common.utils.FreeMarkers;

import freemarker.core.Environment;
import freemarker.template.TemplateDirectiveBody;
import freemarker.template.TemplateException;
import freemarker.template.TemplateModel;

@Component("paginationDirective")
public class PaginationDirective extends BaseDirective {
	@SuppressWarnings({ "rawtypes", "unchecked" })
	public void execute(Environment env, Map params, TemplateModel[] loopVars,
			TemplateDirectiveBody body) throws TemplateException, IOException {
		String str = (String) FreeMarkers.getParameter("pattern", String.class,
				params);
		Integer localInteger1 = (Integer) FreeMarkers.getParameter(
				"pageNumber", Integer.class, params);
		Integer localInteger2 = (Integer) FreeMarkers.getParameter(
				"totalPages", Integer.class, params);
		Integer localInteger3 = (Integer) FreeMarkers.getParameter(
				"segmentCount", Integer.class, params);
		if ((localInteger1 == null) || (localInteger1.intValue() < 1))
			localInteger1 = Integer.valueOf(1);
		if ((localInteger2 == null) || (localInteger2.intValue() < 1))
			localInteger2 = Integer.valueOf(1);
		if ((localInteger3 == null) || (localInteger3.intValue() < 1))
			localInteger3 = Integer.valueOf(5);
		boolean bool1 = localInteger1.intValue() > 1;
		boolean bool2 = localInteger1.intValue() < localInteger2.intValue();
		boolean bool3 = localInteger1.intValue() == 1;
		boolean bool4 = localInteger1.equals(localInteger2);
		int i = localInteger1.intValue() - 1;
		int j = localInteger1.intValue() + 1;
		int k = 1;
		int m = localInteger2.intValue();
		int n = localInteger1.intValue()
				- (int) Math.floor((localInteger3.intValue() - 1) / 2.0D);
		int i1 = localInteger1.intValue()
				+ (int) Math.ceil((localInteger3.intValue() - 1) / 2.0D);
		if (n < 1)
			n = 1;
		if (i1 > localInteger2.intValue())
			i1 = localInteger2.intValue();
		ArrayList localArrayList = new ArrayList();
		for (int i2 = n; i2 <= i1; i2++)
			localArrayList.add(Integer.valueOf(i2));
		HashMap localHashMap = new HashMap();
		localHashMap.put("pattern", str);
		localHashMap.put("pageNumber", localInteger1);
		localHashMap.put("totalPages", localInteger2);
		localHashMap.put("segmentCount", localInteger3);
		localHashMap.put("hasPrevious", Boolean.valueOf(bool1));
		localHashMap.put("hasNext", Boolean.valueOf(bool2));
		localHashMap.put("isFirst", Boolean.valueOf(bool3));
		localHashMap.put("isLast", Boolean.valueOf(bool4));
		localHashMap.put("previousPageNumber", Integer.valueOf(i));
		localHashMap.put("nextPageNumber", Integer.valueOf(j));
		localHashMap.put("firstPageNumber", Integer.valueOf(k));
		localHashMap.put("lastPageNumber", Integer.valueOf(m));
		localHashMap.put("segment", localArrayList);
		setFreemarker(localHashMap, env, body);
	}
}