Suppose there is a HTML block
<div id='list'>
<p>hello</p>
<div class='locked'>world</div>
<p>你好</p>
<div class='locked'>世界</div>
</div>
how to use selenium with python to wait for a while until all the <div class='locked'> tags become something else.(eg. <div class='unlock'>xxx</div>
Thanks!
One could write a custom expected condition checking for the specific state that you need to attain. Like in your scenario you want the controls with locked state or class to be at count 0 to proceed further. I have given a sample of the code that could be used for custom Sync function I am new to python based Selenium but it think this should do the trick assuming you are using xpath for identifying the locked state controls.
--------------Updated with Python Code---------------------------
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
class WaitForLockStateChange:
def __init__(self, locator):
self.locator = locator
def __call__(self, driver):
return len(driver.find_elements_by_xpath(self.locator)) == 0
wait = WebDriverWait(driver, 10)
element = wait.until(WaitForLockStateChange("//div[@class='locked']"))
I've got a custom built class I created for a very similar purpose (in my case I was interested in "value" property changes, but I modified it to fit your "class" change example):
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
class WaitForAttrValueChange:
def __init__(self, locator, val_):
self.locator = locator
self.val = val_
def __call__(self, driver):
try:
attr_value = EC._find_element(driver, self.locator).get_property('className')
return attr_value.startswith(self.val)
except SE.StaleElementReferenceException:
return False
You can then use it with WebDriverWait(obviously you can use any By identification method instead of By.ID, this is just an example):
WebDriverWait(driver, 20).until(WaitForAttrValueChange((By.ID, 'id'), 'locked'))
Using Selenium with python to wait for all the <div class='locked'> tags become <div class='unlock'>xxx</div> you have to induce WebDriverWait for the visibility_of_all_elements_located() and you can use either of the following Locator Strategies:
Using CSS_SELECTOR:
WebDriverWait(driver, 10).until(EC.visibility_of_all_elements_located((By.CSS_SELECTOR, "div#list div.unlock")))
Using XPATH:
WebDriverWait(driver, 10).until(EC.visibility_of_all_elements_located((By.XPATH, "//div[@id='list']//div[@class='unlock']")))
Note : You have to add the following imports:
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
div.unlock then the wait will end. OP is asking about how to detect that there are 0 div.lock elements.