package cn.webwheel.tutorials.filter;

import cn.webwheel.Action;
import cn.webwheel.Result;
import cn.webwheel.WebContext;
import cn.webwheel.WebContextAware;
import cn.webwheel.plugin.template.BaseTemplateResultFactory;
import cn.webwheel.plugin.template.Component;

/**
 * 頁面/index.html對(duì)應(yīng)的動(dòng)作類以及頁面組件類，同時(shí)單獨(dú)此兩個(gè)角色可更好的組織邏輯
 */
public class PageIndex implements Action, Component, WebContextAware {

    private WebContext context;

    private int count;

    public Result execute() throws Exception {
        // 從request對(duì)象中獲得count參數(shù)（此參數(shù)由CountFilter設(shè)置）
        count = (Integer)context.getRequest().getAttribute("count");
        // 從context中獲得模板結(jié)果工廠，并通過工廠創(chuàng)建對(duì)于與自身的頁面渲染結(jié)果并返回
        BaseTemplateResultFactory resultFactory = (BaseTemplateResultFactory) context.getContext().getAttribute("resultFactory");
        return resultFactory.findResult(this);
    }

    public boolean beginRender() {
        return true;
    }

    public void afterRender() {
    }

    public void setWebContext(WebContext context) {
        this.context = context;
    }

    //頁面上調(diào)用
    public int getCount() {
        return count;
    }
}