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import time,urllib2
from selenium import webdriver
_init_js="""
(function (){
if (window.__e)
{ return;
}
var e=document.createElement('div');
e.setAttribute("id","__s_msg");
e.style.display="none";
document.body.appendChild(e);
window.__e=e;
})();
window.__s_set_msg=function(a){
    window.__e.setAttribute("msg",a.toString()||"");
}
"""
_loadJsFmt="""
var script = document.createElement('script');
script.src = "{0}";
document.body.appendChild(script);
"""
_jquery_cdn="http://lib.sinaapp.com/js/jquery/1.7.2/jquery.min.js"
_warpjsfmt="__s_set_msg({0})"

class ExeJs(object):
    def __init__(self,driver,trytimes=10):
        from time import sleep
        self.driver=driver
        driver.execute_script(_init_js)
        while trytimes >0:
            try:
                self.msgNode=driver.find_element_by_id('__s_msg')
                break
            except Exception:
                sleep(1)
                trytimes -= 1
        if self.msgNode is None:
            raise Exception()
    def exeWrap(self,jsstr):
        """ jsstr 执行后有返回值，返回值通过self.getMsg()获取 """
        self.driver.execute_script(_warpjsfmt.format(jsstr))
    def loadJs(self,path):
        self.execute(_loadJsFmt.format(path))
    def loadJquery(self,path=_jquery_cdn):
        self.loadJs(path)
    def execute(self,jsstr):
        self.driver.execute_script(jsstr)
    def getMsg(self):
        return self.msgNode.get_attribute('msg')
    
    
driver = webdriver.PhantomJS()
#driver.set_window_size(1200, 10000)

jquery = urllib2.urlopen("http://zjzx.zjnu.edu.cn/bm/jquery-1.7.js").read()

for i in range(1,5):
    for j in range(1,21):
        driver.get('http://zjzx.zjnu.edu.cn/test/Default.aspx?cid=%s&pid=%s'%(i,j))
        exejs = ExeJs(driver)
        driver.execute_script(jquery) #active the jquery lib
        driver.execute_script("$('#Button1').click();")
        time.sleep(3)
        driver.execute_script(jquery) #active the jquery lib
        driver.execute_script("$('#Button2').click();")
        time.sleep(3)
        driver.execute_script(jquery) #active the jquery lib
        driver.execute_script("$('#Button3').click();")
        time.sleep(3)

        driver.save_screenshot("c:\code\%s_%s.png"%(i,j))
        time.sleep(3)
        print "ok",i,j