Selenium之动作链（ActionChains）

menu = driver.find_element_by_css_selector(".nav")
hidden_submenu = driver.find_element_by_css_selector(".nav #submenu1")
actions = ActionChains(driver)
actions.move_to_element(menu)
actions.click(hidden_submenu)
actions.perform()

click(on_element=None) ——单击鼠标左键
click_and_hold(on_element=None) ——点击鼠标左键，不松开
context_click(on_element=None) ——点击鼠标右键
double_click(on_element=None) ——双击鼠标左键
drag_and_drop(source, target) ——拖拽到某个元素然后松开
drag_and_drop_by_offset(source, xoffset, yoffset) ——拖拽到某个坐标然后松开
key_down(value, element=None) ——按下某个键盘上的键
key_up(value, element=None) ——松开某个键
move_by_offset(xoffset, yoffset) ——鼠标从当前位置移动到某个坐标
move_to_element(to_element) ——鼠标移动到某个元素
move_to_element_with_offset(to_element, xoffset, yoffset) ——移动到距某个元素（左上角坐标）多少距离的位置
perform() ——执行链中的所有动作
release(on_element=None) ——在某个元素位置松开鼠标左键
send_keys(*keys_to_send) ——发送某个键到当前焦点的元素
send_keys_to_element(element, *keys_to_send) ——发送某个键到指定元素

# -*- coding: utf-8 -*-
from selenium import webdriver
from selenium.webdriver.common.action_chains import ActionChains
from time import sleep
driver = webdriver.Firefox()
driver.implicitly_wait(10)
driver.maximize_window()
driver.get(‘http://sahitest.com/demo/clicks.htm‘)
click_btn = driver.find_element_by_xpath(‘//input[@value="click me"]‘)  # 单击按钮
doubleclick_btn = driver.find_element_by_xpath(‘//input[@value="dbl click me"]‘)  # 双击按钮
rightclick_btn = driver.find_element_by_xpath(‘//input[@value="right click me"]‘)  # 右键单击按钮
ActionChains(driver).click(click_btn).double_click(doubleclick_btn).context_click(rightclick_btn).perform()  # 链式用法
print driver.find_element_by_name(‘t2‘).get_attribute(‘value‘)
sleep(2)
driver.quit() 

# -*- coding: utf-8 -*-?
from selenium import webdriver
from selenium.webdriver.common.action_chains import ActionChains
from time import sleep
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driver = webdriver.Firefox()
driver.implicitly_wait(10)
driver.maximize_window()
driver.get(‘http://sahitest.com/demo/mouseover.htm‘)
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write = driver.find_element_by_xpath(‘//input[@value="Write on hover"]‘)  # 鼠标移动到此元素，在下面的input框中会显示“Mouse moved”
blank = driver.find_element_by_xpath(‘//input[@value="Blank on hover"]‘)  # 鼠标移动到此元素，会清空下面input框中的内容
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result = driver.find_element_by_name(‘t1‘)
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action = ActionChains(driver)
action.move_to_element(write).perform()  # 移动到write，显示“Mouse moved”
print result.get_attribute(‘value‘)
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# action.move_to_element(blank).perform()
action.move_by_offset(10, 50).perform()  # 移动到距离当前位置(10,50)的点，与上句效果相同，移动到blank上，清空
print result.get_attribute(‘value‘)
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action.move_to_element_with_offset(blank, 10, -40).perform()  # 移动到距离blank元素(10,-40)的点，可移动到write上
print result.get_attribute(‘value‘)
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sleep(2)
driver.quit()

# -*- coding: utf-8 -*-
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from selenium import webdriver
from selenium.webdriver.common.action_chains import ActionChains
from time import sleep
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driver = webdriver.Firefox()
driver.implicitly_wait(10)
driver.maximize_window()
driver.get(‘http://sahitest.com/demo/dragDropMooTools.htm‘)
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dragger = driver.find_element_by_id(‘dragger‘)  # 被拖拽元素
item1 = driver.find_element_by_xpath(‘//div[text()="Item 1"]‘)  # 目标元素1
item2 = driver.find_element_by_xpath(‘//div[text()="Item 2"]‘)  # 目标2
item3 = driver.find_element_by_xpath(‘//div[text()="Item 3"]‘)  # 目标3
item4 = driver.find_element_by_xpath(‘//div[text()="Item 4"]‘)  # 目标4
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action = ActionChains(driver)
action.drag_and_drop(dragger, item1).perform()  # 1.移动dragger到目标1
sleep(2)
action.click_and_hold(dragger).release(item2).perform()  # 2.效果与上句相同，也能起到移动效果
sleep(2)
action.click_and_hold(dragger).move_to_element(item3).release().perform()  # 3.效果与上两句相同，也能起到移动的效果
sleep(2)
# action.drag_and_drop_by_offset(dragger, 400, 150).perform()  # 4.移动到指定坐标
action.click_and_hold(dragger).move_by_offset(400, 150).release().perform()  # 5.与上一句相同，移动到指定坐标
sleep(2)
driver.quit()