mirror of
https://gitee.com/g1879/DrissionPage.git
synced 2024-12-10 04:00:23 +08:00
1783 lines
75 KiB
Python
1783 lines
75 KiB
Python
# -*- coding:utf-8 -*-
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"""
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@Author : g1879
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@Contact : g1879@qq.com
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@Copyright: (c) 2024 by g1879, Inc. All Rights Reserved.
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@License : BSD 3-Clause.
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"""
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from json import loads
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from os.path import basename
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from pathlib import Path
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from re import search
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from time import perf_counter, sleep
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from DataRecorder.tools import get_usable_path, make_valid_name
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from .none_element import NoneElement
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from .session_element import make_session_ele
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from .._base.base import DrissionElement, BaseElement
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from .._functions.elements import ChromiumElementsList, SessionElementsList
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from .._functions.keys import input_text_or_keys
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from .._functions.locator import get_loc, locator_to_tuple
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from .._functions.web import make_absolute_link, get_ele_txt, format_html, is_js_func, get_blob
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from .._units.clicker import Clicker
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from .._units.rect import ElementRect
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from .._units.scroller import ElementScroller
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from .._units.selector import SelectElement
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from .._units.setter import ChromiumElementSetter
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from .._units.states import ElementStates, ShadowRootStates
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from .._units.waiter import ElementWaiter
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from ..errors import ContextLostError, ElementLostError, JavaScriptError, CDPError, NoResourceError, AlertExistsError, \
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NoRectError
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__FRAME_ELEMENT__ = ('iframe', 'frame')
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class ChromiumElement(DrissionElement):
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"""控制浏览器元素的对象"""
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def __init__(self, owner, node_id=None, obj_id=None, backend_id=None):
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"""node_id、obj_id和backend_id必须至少传入一个
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:param owner: 元素所在页面对象
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:param node_id: cdp中的node id
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:param obj_id: js中的object id
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:param backend_id: backend id
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"""
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super().__init__(owner)
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self.tab = self.owner._tab
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self._select = None
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self._scroll = None
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self._rect = None
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self._set = None
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self._states = None
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self._pseudo = None
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self._clicker = None
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self._tag = None
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self._wait = None
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self._type = 'ChromiumElement'
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self._doc_id = None
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if node_id and obj_id and backend_id:
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self._node_id = node_id
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self._obj_id = obj_id
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self._backend_id = backend_id
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elif node_id:
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self._node_id = node_id
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self._obj_id = self._get_obj_id(node_id)
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self._backend_id = self._get_backend_id(self._node_id)
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elif obj_id:
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self._node_id = self._get_node_id(obj_id)
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self._obj_id = obj_id
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self._backend_id = self._get_backend_id(self._node_id)
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elif backend_id:
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self._obj_id = self._get_obj_id(backend_id=backend_id)
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self._node_id = self._get_node_id(obj_id=self._obj_id)
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self._backend_id = backend_id
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else:
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raise ElementLostError
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def __repr__(self):
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attrs = [f"{k}='{v}'" for k, v in self.attrs.items()]
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return f'<ChromiumElement {self.tag} {" ".join(attrs)}>'
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def __call__(self, locator, index=1, timeout=None):
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"""在内部查找元素
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:param locator: 元素的定位信息，可以是loc元组，或查询字符串
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:param timeout: 超时时间（秒）
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:return: ChromiumElement对象或属性、文本
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"""
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return self.ele(locator, index=index, timeout=timeout)
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def __eq__(self, other):
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return self._backend_id == getattr(other, '_backend_id', None)
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@property
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def tag(self):
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"""返回元素tag"""
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if self._tag is None:
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self._tag = self.owner._run_cdp('DOM.describeNode',
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backendNodeId=self._backend_id)['node']['localName'].lower()
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return self._tag
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@property
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def html(self):
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"""返回元素outerHTML文本"""
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return self.owner._run_cdp('DOM.getOuterHTML', backendNodeId=self._backend_id)['outerHTML']
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@property
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def inner_html(self):
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"""返回元素innerHTML文本"""
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return self._run_js('return this.innerHTML;')
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@property
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def attrs(self):
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"""返回元素所有attribute属性"""
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try:
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attrs = self.owner._run_cdp('DOM.getAttributes', nodeId=self._node_id)['attributes']
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return {attrs[i]: attrs[i + 1] for i in range(0, len(attrs), 2)}
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except ElementLostError:
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self._refresh_id()
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attrs = self.owner._run_cdp('DOM.getAttributes', nodeId=self._node_id)['attributes']
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return {attrs[i]: attrs[i + 1] for i in range(0, len(attrs), 2)}
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except CDPError: # 文档根元素不能调用此方法
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return {}
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@property
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def text(self):
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"""返回元素内所有文本，文本已格式化"""
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return get_ele_txt(make_session_ele(self.html))
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@property
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def raw_text(self):
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"""返回未格式化处理的元素内文本"""
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return self.property('innerText')
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# -----------------d模式独有属性-------------------
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@property
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def set(self):
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"""返回用于设置元素属性的对象"""
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if self._set is None:
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self._set = ChromiumElementSetter(self)
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return self._set
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@property
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def states(self):
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"""返回用于获取元素状态的对象"""
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if self._states is None:
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self._states = ElementStates(self)
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return self._states
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@property
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def pseudo(self):
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"""返回用于获取伪元素内容的对象"""
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if self._pseudo is None:
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self._pseudo = Pseudo(self)
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return self._pseudo
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@property
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def rect(self):
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"""返回用于获取元素位置的对象"""
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if self._rect is None:
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self._rect = ElementRect(self)
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return self._rect
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@property
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def sr(self):
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"""返回当前元素的shadow_root元素对象"""
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info = self.owner._run_cdp('DOM.describeNode', backendNodeId=self._backend_id)['node']
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if not info.get('shadowRoots', None):
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return None
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return ShadowRoot(self, backend_id=info['shadowRoots'][0]['backendNodeId'])
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@property
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def shadow_root(self):
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"""返回当前元素的shadow_root元素对象"""
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return self.sr
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@property
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def scroll(self):
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"""用于滚动滚动条的对象"""
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if self._scroll is None:
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self._scroll = ElementScroller(self)
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return self._scroll
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@property
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def click(self):
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"""返回用于点击的对象"""
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if self._clicker is None:
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self._clicker = Clicker(self)
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return self._clicker
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@property
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def wait(self):
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"""返回用于等待的对象"""
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if self._wait is None:
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self._wait = ElementWaiter(self)
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return self._wait
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@property
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def select(self):
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"""返回专门处理下拉列表的Select类，非下拉列表元素返回False"""
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if self._select is None:
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if self.tag != 'select':
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self._select = False
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else:
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self._select = SelectElement(self)
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return self._select
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@property
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def value(self):
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return self.property('value')
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def check(self, uncheck=False, by_js=False):
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"""选中或取消选中当前元素
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:param uncheck: 是否取消选中
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:param by_js: 是否用js执行
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:return: None
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"""
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is_checked = self.states.is_checked
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if by_js:
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js = None
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if is_checked and uncheck:
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js = 'this.checked=false'
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elif not is_checked and not uncheck:
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js = 'this.checked=true'
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if js:
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self._run_js(js)
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self._run_js('this.dispatchEvent(new Event("change", {bubbles: true}));')
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else:
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if (is_checked and uncheck) or (not is_checked and not uncheck):
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self.click()
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def parent(self, level_or_loc=1, index=1):
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"""返回上面某一级父元素，可指定层数或用查询语法定位
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:param level_or_loc: 第几级父元素，1开始，或定位符
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:param index: 当level_or_loc传入定位符，使用此参数选择第几个结果，1开始
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:return: 上级元素对象
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"""
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return super().parent(level_or_loc, index)
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def child(self, locator='', index=1, timeout=None, ele_only=True):
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"""返回当前元素的一个符合条件的直接子元素，可用查询语法筛选，可指定返回筛选结果的第几个
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:param locator: 用于筛选的查询语法
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:param index: 第几个查询结果，1开始
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:param timeout: 查找节点的超时时间（秒）
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:param ele_only: 是否只获取元素，为False时把文本、注释节点也纳入
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:return: 直接子元素或节点文本
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"""
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return super().child(locator, index, timeout, ele_only=ele_only)
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def prev(self, locator='', index=1, timeout=None, ele_only=True):
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"""返回当前元素前面一个符合条件的同级元素，可用查询语法筛选，可指定返回筛选结果的第几个
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:param locator: 用于筛选的查询语法
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:param index: 前面第几个查询结果，1开始
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:param timeout: 查找节点的超时时间（秒）
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:param ele_only: 是否只获取元素，为False时把文本、注释节点也纳入
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:return: 兄弟元素或节点文本
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"""
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return super().prev(locator, index, timeout, ele_only=ele_only)
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def next(self, locator='', index=1, timeout=None, ele_only=True):
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"""返回当前元素后面一个符合条件的同级元素，可用查询语法筛选，可指定返回筛选结果的第几个
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:param locator: 用于筛选的查询语法
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:param index: 第几个查询结果，1开始
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:param timeout: 查找节点的超时时间（秒）
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:param ele_only: 是否只获取元素，为False时把文本、注释节点也纳入
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:return: 兄弟元素或节点文本
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"""
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return super().next(locator, index, timeout, ele_only=ele_only)
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def before(self, locator='', index=1, timeout=None, ele_only=True):
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"""返回文档中当前元素前面符合条件的一个元素，可用查询语法筛选，可指定返回筛选结果的第几个
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查找范围不限同级元素，而是整个DOM文档
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:param locator: 用于筛选的查询语法
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:param index: 前面第几个查询结果，1开始
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:param timeout: 查找节点的超时时间（秒）
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:param ele_only: 是否只获取元素，为False时把文本、注释节点也纳入
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:return: 本元素前面的某个元素或节点
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"""
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return super().before(locator, index, timeout, ele_only=ele_only)
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def after(self, locator='', index=1, timeout=None, ele_only=True):
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"""返回文档中此当前元素后面符合条件的一个元素，可用查询语法筛选，可指定返回筛选结果的第几个
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查找范围不限同级元素，而是整个DOM文档
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:param locator: 用于筛选的查询语法
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:param index: 第几个查询结果，1开始
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:param timeout: 查找节点的超时时间（秒）
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:param ele_only: 是否只获取元素，为False时把文本、注释节点也纳入
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:return: 本元素后面的某个元素或节点
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"""
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return super().after(locator, index, timeout, ele_only=ele_only)
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def children(self, locator='', timeout=None, ele_only=True):
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"""返回当前元素符合条件的直接子元素或节点组成的列表，可用查询语法筛选
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:param locator: 用于筛选的查询语法
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:param timeout: 查找节点的超时时间（秒）
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:param ele_only: 是否只获取元素，为False时把文本、注释节点也纳入
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:return: 直接子元素或节点文本组成的列表
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"""
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return ChromiumElementsList(self.owner, super().children(locator, timeout, ele_only=ele_only))
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def prevs(self, locator='', timeout=None, ele_only=True):
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"""返回当前元素前面符合条件的同级元素或节点组成的列表，可用查询语法筛选
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:param locator: 用于筛选的查询语法
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:param timeout: 查找节点的超时时间（秒）
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:param ele_only: 是否只获取元素，为False时把文本、注释节点也纳入
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:return: 兄弟元素或节点文本组成的列表
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"""
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return ChromiumElementsList(self.owner, super().prevs(locator, timeout, ele_only=ele_only))
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def nexts(self, locator='', timeout=None, ele_only=True):
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"""返回当前元素后面符合条件的同级元素或节点组成的列表，可用查询语法筛选
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:param locator: 用于筛选的查询语法
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:param timeout: 查找节点的超时时间（秒）
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:param ele_only: 是否只获取元素，为False时把文本、注释节点也纳入
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:return: 兄弟元素或节点文本组成的列表
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"""
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return ChromiumElementsList(self.owner, super().nexts(locator, timeout, ele_only=ele_only))
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def befores(self, locator='', timeout=None, ele_only=True):
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"""返回文档中当前元素前面符合条件的元素或节点组成的列表，可用查询语法筛选
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查找范围不限同级元素，而是整个DOM文档
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:param locator: 用于筛选的查询语法
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:param timeout: 查找节点的超时时间（秒）
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:param ele_only: 是否只获取元素，为False时把文本、注释节点也纳入
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:return: 本元素前面的元素或节点组成的列表
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"""
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return ChromiumElementsList(self.owner, super().befores(locator, timeout, ele_only=ele_only))
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def afters(self, locator='', timeout=None, ele_only=True):
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"""返回文档中当前元素后面符合条件的元素或节点组成的列表，可用查询语法筛选
|
||
查找范围不限同级元素，而是整个DOM文档
|
||
:param locator: 用于筛选的查询语法
|
||
:param timeout: 查找节点的超时时间（秒）
|
||
:param ele_only: 是否只获取元素，为False时把文本、注释节点也纳入
|
||
:return: 本元素后面的元素或节点组成的列表
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||
"""
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return ChromiumElementsList(self.owner, super().afters(locator, timeout, ele_only=ele_only))
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||
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def over(self, timeout=None):
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"""获取覆盖在本元素上最上层的元素
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:param timeout: 等待元素出现的超时时间（秒）
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||
:return: 元素对象
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||
"""
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||
timeout = timeout if timeout is None else self.owner.timeout
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||
bid = self.wait.covered(timeout=timeout)
|
||
if bid:
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||
return ChromiumElement(owner=self.owner, backend_id=bid)
|
||
else:
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||
return NoneElement(page=self.owner, method='on()', args={'timeout': timeout})
|
||
|
||
def offset(self, locator=None, x=None, y=None, timeout=None):
|
||
"""获取相对本元素左上角左边指定偏移量位置的元素，如果offset_x和offset_y都是None，定位到元素中间点
|
||
:param locator: 定位符，只支持str，且不支持xpath和css方式
|
||
:param x: 横坐标偏移量，向右为正
|
||
:param y: 纵坐标偏移量，向下为正
|
||
:param timeout: 超时时间（秒），为None使用所在页面设置
|
||
:return: 元素对象
|
||
"""
|
||
if locator and not (isinstance(locator, str) and not locator.startswith(
|
||
('x:', 'xpath:', 'x=', 'xpath=', 'c:', 'css:', 'c=', 'css='))):
|
||
raise ValueError('locator参数只能是str格式且不支持xpath和css形式。')
|
||
|
||
if x == y is None:
|
||
x, y = self.rect.midpoint
|
||
x = int(x)
|
||
y = int(y)
|
||
else:
|
||
nx, ny = self.rect.location
|
||
nx += x if x else 0
|
||
ny += y if y else 0
|
||
x = int(nx)
|
||
y = int(ny)
|
||
loc_data = locator_to_tuple(locator) if locator else None
|
||
timeout = timeout if timeout is not None else self.owner.timeout
|
||
end_time = perf_counter() + timeout
|
||
try:
|
||
ele = ChromiumElement(owner=self.owner,
|
||
backend_id=self.owner._run_cdp('DOM.getNodeForLocation', x=x, y=y,
|
||
includeUserAgentShadowDOM=True,
|
||
ignorePointerEventsNone=False)['backendNodeId'])
|
||
except CDPError:
|
||
ele = False
|
||
if ele and (loc_data is None or _check_ele(ele, loc_data)):
|
||
return ele
|
||
|
||
while perf_counter() < end_time:
|
||
try:
|
||
ele = ChromiumElement(owner=self.owner,
|
||
backend_id=self.owner._run_cdp('DOM.getNodeForLocation', x=x, y=y,
|
||
includeUserAgentShadowDOM=True,
|
||
ignorePointerEventsNone=False)['backendNodeId'])
|
||
except CDPError:
|
||
ele = False
|
||
|
||
if ele and (loc_data is None or _check_ele(ele, loc_data)):
|
||
return ele
|
||
sleep(.1)
|
||
|
||
return NoneElement(page=self.owner, method='offset()',
|
||
args={'locator': locator, 'offset_x': x, 'offset_y': y, 'timeout': timeout})
|
||
|
||
def east(self, loc_or_pixel=None, index=1):
|
||
"""获取元素右边某个指定元素
|
||
:param loc_or_pixel: 定位符，只支持str或int，且不支持xpath和css方式，传入int按像素距离获取
|
||
:param index: 第几个，从1开始
|
||
:return: 获取到的元素对象
|
||
"""
|
||
return self._get_relative_eles(mode='east', locator=loc_or_pixel, index=index)
|
||
|
||
def south(self, loc_or_pixel=None, index=1):
|
||
"""获取元素下方某个指定元素
|
||
:param loc_or_pixel: 定位符，只支持str或int，且不支持xpath和css方式，传入int按像素距离获取
|
||
:param index: 第几个，从1开始
|
||
:return: 获取到的元素对象
|
||
"""
|
||
return self._get_relative_eles(mode='south', locator=loc_or_pixel, index=index)
|
||
|
||
def west(self, loc_or_pixel=None, index=1):
|
||
"""获取元素左边某个指定元素
|
||
:param loc_or_pixel: 定位符，只支持str或int，且不支持xpath和css方式，传入int按像素距离获取
|
||
:param index: 第几个，从1开始
|
||
:return: 获取到的元素对象
|
||
"""
|
||
return self._get_relative_eles(mode='west', locator=loc_or_pixel, index=index)
|
||
|
||
def north(self, loc_or_pixel=None, index=1):
|
||
"""获取元素上方某个指定元素
|
||
:param loc_or_pixel: 定位符，只支持str或int，且不支持xpath和css方式，传入int按像素距离获取
|
||
:param index: 第几个，从1开始
|
||
:return: 获取到的元素对象
|
||
"""
|
||
return self._get_relative_eles(mode='north', locator=loc_or_pixel, index=index)
|
||
|
||
def _get_relative_eles(self, mode='north', locator=None, index=1):
|
||
"""获取元素下方某个指定元素
|
||
:param locator: 定位符，只支持str或int，且不支持xpath和css方式
|
||
:param index: 第几个，从1开始
|
||
:return: 获取到的元素对象
|
||
"""
|
||
if locator and not (isinstance(locator, str) and not locator.startswith(
|
||
('x:', 'xpath:', 'x=', 'xpath=', 'c:', 'css:', 'c=', 'css=')) or isinstance(locator, int)):
|
||
raise ValueError('locator参数只能是str格式且不支持xpath和css形式。')
|
||
rect = self.states.has_rect
|
||
if not rect:
|
||
raise NoRectError
|
||
|
||
if mode == 'east':
|
||
cdp_data = {'x': int(rect[1][0]), 'y': int(self.rect.midpoint[1]),
|
||
'includeUserAgentShadowDOM': True, 'ignorePointerEventsNone': False}
|
||
variable = 'x'
|
||
minus = False
|
||
elif mode == 'south':
|
||
cdp_data = {'x': int(self.rect.midpoint[0]), 'y': int(rect[2][1]),
|
||
'includeUserAgentShadowDOM': True, 'ignorePointerEventsNone': False}
|
||
variable = 'y'
|
||
minus = False
|
||
elif mode == 'west':
|
||
cdp_data = {'x': int(rect[0][0]), 'y': int(self.rect.midpoint[1]),
|
||
'includeUserAgentShadowDOM': True, 'ignorePointerEventsNone': False}
|
||
variable = 'x'
|
||
minus = True
|
||
else: # north
|
||
cdp_data = {'x': int(self.rect.midpoint[0]), 'y': int(rect[0][1]),
|
||
'includeUserAgentShadowDOM': True, 'ignorePointerEventsNone': False}
|
||
variable = 'y'
|
||
minus = True
|
||
|
||
if isinstance(locator, int):
|
||
if minus:
|
||
cdp_data[variable] -= locator
|
||
else:
|
||
cdp_data[variable] += locator
|
||
try:
|
||
return ChromiumElement(owner=self.owner,
|
||
backend_id=self.owner._run_cdp('DOM.getNodeForLocation',
|
||
**cdp_data)['backendNodeId'])
|
||
except CDPError:
|
||
return NoneElement(page=self.owner, method=f'{mode}()', args={'locator': locator})
|
||
|
||
num = 0
|
||
value = -8 if minus else 8
|
||
size = self.owner.rect.size
|
||
max_len = size[0] if mode == 'east' else size[1]
|
||
loc_data = locator_to_tuple(locator) if locator else None
|
||
curr_ele = None
|
||
while 0 < cdp_data[variable] < max_len:
|
||
cdp_data[variable] += value
|
||
try:
|
||
bid = self.owner._run_cdp('DOM.getNodeForLocation', **cdp_data)['backendNodeId']
|
||
if bid == curr_ele:
|
||
continue
|
||
else:
|
||
curr_ele = bid
|
||
ele = ChromiumElement(self.owner, backend_id=bid)
|
||
|
||
if loc_data is None or _check_ele(ele, loc_data):
|
||
num += 1
|
||
if num == index:
|
||
return ele
|
||
except:
|
||
pass
|
||
|
||
return NoneElement(page=self.owner, method=f'{mode}()', args={'locator': locator})
|
||
|
||
def attr(self, attr):
|
||
"""返回一个attribute属性值
|
||
:param attr: 属性名
|
||
:return: 属性值文本，没有该属性返回None
|
||
"""
|
||
attrs = self.attrs
|
||
if attr == 'href': # 获取href属性时返回绝对url
|
||
link = attrs.get('href')
|
||
if not link or link.lower().startswith(('javascript:', 'mailto:')):
|
||
return link
|
||
else:
|
||
return make_absolute_link(link, self.property('baseURI'))
|
||
|
||
elif attr == 'src':
|
||
return make_absolute_link(attrs.get('src'), self.property('baseURI'))
|
||
|
||
elif attr == 'text':
|
||
return self.text
|
||
|
||
elif attr == 'innerText':
|
||
return self.raw_text
|
||
|
||
elif attr in ('html', 'outerHTML'):
|
||
return self.html
|
||
|
||
elif attr == 'innerHTML':
|
||
return self.inner_html
|
||
|
||
else:
|
||
return attrs.get(attr, None)
|
||
|
||
def remove_attr(self, name):
|
||
"""删除元素一个attribute属性
|
||
:param name: 属性名
|
||
:return: None
|
||
"""
|
||
self._run_js(f'this.removeAttribute("{name}");')
|
||
|
||
def property(self, name):
|
||
"""获取一个property属性值
|
||
:param name: 属性名
|
||
:return: 属性值文本
|
||
"""
|
||
try:
|
||
value = self._run_js(f'return this.{name};')
|
||
return format_html(value) if isinstance(value, str) else value
|
||
except:
|
||
return None
|
||
|
||
def run_js(self, script, *args, as_expr=False, timeout=None):
|
||
"""对本元素执行javascript代码
|
||
:param script: js文本，文本中用this表示本元素
|
||
:param args: 参数，按顺序在js文本中对应arguments[0]、arguments[1]...
|
||
:param as_expr: 是否作为表达式运行，为True时args无效
|
||
:param timeout: js超时时间（秒），为None则使用页面timeouts.script设置
|
||
:return: 运行的结果
|
||
"""
|
||
return self._run_js(script, *args, as_expr=as_expr, timeout=timeout)
|
||
|
||
def _run_js(self, script, *args, as_expr=False, timeout=None):
|
||
"""对本元素执行javascript代码
|
||
:param script: js文本，文本中用this表示本元素
|
||
:param args: 参数，按顺序在js文本中对应arguments[0]、arguments[1]...
|
||
:param as_expr: 是否作为表达式运行，为True时args无效
|
||
:param timeout: js超时时间（秒），为None则使用页面timeouts.script设置
|
||
:return: 运行的结果
|
||
"""
|
||
return run_js(self, script, as_expr, self.owner.timeouts.script if timeout is None else timeout, args)
|
||
|
||
def run_async_js(self, script, *args, as_expr=False):
|
||
"""以异步方式对本元素执行javascript代码
|
||
:param script: js文本，文本中用this表示本元素
|
||
:param args: 参数，按顺序在js文本中对应arguments[0]、arguments[1]...
|
||
:param as_expr: 是否作为表达式运行，为True时args无效
|
||
:return: None
|
||
"""
|
||
run_js(self, script, as_expr, 0, args)
|
||
|
||
def ele(self, locator, index=1, timeout=None):
|
||
"""返回当前元素下级符合条件的一个元素、属性或节点文本
|
||
:param locator: 元素的定位信息，可以是loc元组，或查询字符串
|
||
:param index: 获取第几个元素，从1开始，可传入负数获取倒数第几个
|
||
:param timeout: 查找元素超时时间（秒），默认与元素所在页面等待时间一致
|
||
:return: ChromiumElement对象或属性、文本
|
||
"""
|
||
return self._ele(locator, timeout, index=index, method='ele()')
|
||
|
||
def eles(self, locator, timeout=None):
|
||
"""返回当前元素下级所有符合条件的子元素、属性或节点文本
|
||
:param locator: 元素的定位信息，可以是loc元组，或查询字符串
|
||
:param timeout: 查找元素超时时间（秒），默认与元素所在页面等待时间一致
|
||
:return: ChromiumElement对象或属性、文本组成的列表
|
||
"""
|
||
return self._ele(locator, timeout=timeout, index=None)
|
||
|
||
def s_ele(self, locator=None, index=1, timeout=None):
|
||
"""查找一个符合条件的元素，以SessionElement形式返回
|
||
:param locator: 元素的定位信息，可以是loc元组，或查询字符串
|
||
:param index: 获取第几个，从1开始，可传入负数获取倒数第几个
|
||
:param timeout: 查找元素超时时间（秒），默认与元素所在页面等待时间一致
|
||
:return: SessionElement对象或属性、文本
|
||
"""
|
||
return (make_session_ele(self, locator, index=index, method='s_ele()')
|
||
if self.ele(locator, index=index, timeout=timeout)
|
||
else NoneElement(self, method='s_ele()', args={'locator': locator, 'index': index}))
|
||
|
||
def s_eles(self, locator=None, timeout=None):
|
||
"""查找所有符合条件的元素，以SessionElement列表形式返回
|
||
:param locator: 定位符
|
||
:param timeout: 查找元素超时时间（秒），默认与元素所在页面等待时间一致
|
||
:return: SessionElement或属性、文本组成的列表
|
||
"""
|
||
return (make_session_ele(self, locator, index=None)
|
||
if self.ele(locator, timeout=timeout) else SessionElementsList())
|
||
|
||
def _find_elements(self, locator, timeout=None, index=1, relative=False, raise_err=None):
|
||
"""返回当前元素下级符合条件的子元素、属性或节点文本，默认返回第一个
|
||
:param locator: 元素的定位信息，可以是loc元组，或查询字符串
|
||
:param timeout: 查找元素超时时间（秒）
|
||
:param index: 第几个结果，从1开始，可传入负数获取倒数第几个，为None返回所有
|
||
:param relative: MixTab用的表示是否相对定位的参数
|
||
:param raise_err: 找不到元素是是否抛出异常，为None时根据全局设置
|
||
:return: ChromiumElement对象或文本、属性或其组成的列表
|
||
"""
|
||
return find_in_chromium_ele(self, locator, index, timeout, relative=relative)
|
||
|
||
def style(self, style, pseudo_ele=''):
|
||
"""返回元素样式属性值，可获取伪元素属性值
|
||
:param style: 样式属性名称
|
||
:param pseudo_ele: 伪元素名称（如有）
|
||
:return: 样式属性的值
|
||
"""
|
||
if pseudo_ele:
|
||
pseudo_ele = f', "{pseudo_ele}"' if pseudo_ele.startswith(':') else f', "::{pseudo_ele}"'
|
||
return self._run_js(f'return window.getComputedStyle(this{pseudo_ele}).getPropertyValue("{style}");')
|
||
|
||
def src(self, timeout=None, base64_to_bytes=True):
|
||
"""返回元素src资源，base64的可转为bytes返回，其它返回str
|
||
:param timeout: 等待资源加载的超时时间（秒）
|
||
:param base64_to_bytes: 为True时，如果是base64数据，转换为bytes格式
|
||
:return: 资源内容
|
||
"""
|
||
timeout = self.owner.timeout if timeout is None else timeout
|
||
if self.tag == 'img': # 等待图片加载完成
|
||
js = ('return this.complete && typeof this.naturalWidth != "undefined" '
|
||
'&& this.naturalWidth > 0 && typeof this.naturalHeight != "undefined" '
|
||
'&& this.naturalHeight > 0')
|
||
end_time = perf_counter() + timeout
|
||
while not self._run_js(js) and perf_counter() < end_time:
|
||
sleep(.1)
|
||
|
||
src = self.attr('src')
|
||
if not src:
|
||
raise RuntimeError('元素没有src值或该值为空。')
|
||
if src.lower().startswith('data:image'):
|
||
if base64_to_bytes:
|
||
from base64 import b64decode
|
||
return b64decode(src.split(',', 1)[-1])
|
||
else:
|
||
return src.split(',', 1)[-1]
|
||
|
||
is_blob = src.startswith('blob')
|
||
result = None
|
||
end_time = perf_counter() + timeout
|
||
if is_blob:
|
||
while perf_counter() < end_time:
|
||
result = get_blob(self.owner, src, base64_to_bytes)
|
||
if result:
|
||
break
|
||
sleep(.05)
|
||
|
||
else:
|
||
while perf_counter() < end_time:
|
||
src = self.property('currentSrc')
|
||
if not src:
|
||
continue
|
||
|
||
node = self.owner._run_cdp('DOM.describeNode', backendNodeId=self._backend_id)['node']
|
||
frame = node.get('frameId', None) or self.owner._frame_id
|
||
|
||
try:
|
||
result = self.owner._run_cdp('Page.getResourceContent', frameId=frame, url=src)
|
||
break
|
||
except CDPError:
|
||
pass
|
||
sleep(.1)
|
||
|
||
if not result:
|
||
return None
|
||
|
||
elif is_blob:
|
||
return result
|
||
|
||
elif result['base64Encoded'] and base64_to_bytes:
|
||
from base64 import b64decode
|
||
return b64decode(result['content'])
|
||
else:
|
||
return result['content']
|
||
|
||
def save(self, path=None, name=None, timeout=None, rename=True):
|
||
"""保存图片或其它有src属性的元素的资源
|
||
:param path: 文件保存路径，为None时保存到当前文件夹
|
||
:param name: 文件名称，为None时从资源url获取
|
||
:param timeout: 等待资源加载的超时时间（秒）
|
||
:param rename: 遇到重名文件时是否自动重命名
|
||
:return: 返回保存路径
|
||
"""
|
||
data = self.src(timeout=timeout)
|
||
if not data:
|
||
raise NoResourceError
|
||
|
||
path = path or '.'
|
||
if not name and self.tag == 'img':
|
||
src = self.attr('src')
|
||
if src.lower().startswith('data:image'):
|
||
r = search(r'data:image/(.*?);base64,', src)
|
||
name = f'img.{r.group(1)}' if r else None
|
||
path = Path(path) / make_valid_name(name or basename(self.property('currentSrc')))
|
||
if not path.suffix:
|
||
path = path.with_suffix('.jpg')
|
||
if rename:
|
||
path = get_usable_path(path)
|
||
path.parent.mkdir(parents=True, exist_ok=True)
|
||
path = path.absolute()
|
||
write_type = 'wb' if isinstance(data, bytes) else 'w'
|
||
|
||
with open(path, write_type) as f:
|
||
f.write(data)
|
||
|
||
return str(path)
|
||
|
||
def get_screenshot(self, path=None, name=None, as_bytes=None, as_base64=None, scroll_to_center=True):
|
||
"""对当前元素截图，可保存到文件，或以字节方式返回
|
||
:param path: 文件保存路径
|
||
:param name: 完整文件名，后缀可选 'jpg','jpeg','png','webp'
|
||
:param as_bytes: 是否以字节形式返回图片，可选 'jpg','jpeg','png','webp'，生效时path参数和as_base64参数无效
|
||
:param as_base64: 是否以base64字符串形式返回图片，可选 'jpg','jpeg','png','webp'，生效时path参数无效
|
||
:param scroll_to_center: 截图前是否滚动到视口中央
|
||
:return: 图片完整路径或字节文本
|
||
"""
|
||
if self.tag == 'img': # 等待图片加载完成
|
||
js = ('return this.complete && typeof this.naturalWidth != "undefined" && this.naturalWidth > 0 '
|
||
'&& typeof this.naturalHeight != "undefined" && this.naturalHeight > 0')
|
||
end_time = perf_counter() + self.owner.timeout
|
||
while not self._run_js(js) and perf_counter() < end_time:
|
||
sleep(.1)
|
||
if scroll_to_center:
|
||
self.scroll.to_see(center=True)
|
||
|
||
left, top = self.rect.location
|
||
width, height = self.rect.size
|
||
left_top = (left, top)
|
||
right_bottom = (left + width, top + height)
|
||
if not name:
|
||
name = f'{self.tag}.jpg'
|
||
|
||
return self.owner._get_screenshot(path, name, as_bytes=as_bytes, as_base64=as_base64, full_page=False,
|
||
left_top=left_top, right_bottom=right_bottom, ele=self)
|
||
|
||
def input(self, vals, clear=False, by_js=False):
|
||
"""输入文本或组合键，也可用于输入文件路径到input元素（路径间用\n间隔）
|
||
:param vals: 文本值或按键组合
|
||
:param clear: 输入前是否清空文本框
|
||
:param by_js: 是否用js方式输入，不能输入组合键
|
||
:return: None
|
||
"""
|
||
if self.tag == 'input' and self.attr('type') == 'file':
|
||
return self._set_file_input(vals)
|
||
|
||
if by_js:
|
||
if clear:
|
||
self.clear(True)
|
||
if isinstance(vals, (list, tuple)):
|
||
vals = ''.join([str(i) for i in vals])
|
||
self.set.property('value', str(vals))
|
||
self._run_js('this.dispatchEvent(new Event("change", {bubbles: true}));')
|
||
return
|
||
|
||
self.wait.clickable(wait_moved=False, timeout=.5)
|
||
if clear and vals not in ('\n', '\ue007'):
|
||
self.clear(by_js=False)
|
||
else:
|
||
self._input_focus()
|
||
|
||
if isinstance(vals, str) and vals not in ('\ue003', '\ue017', '\ue010', '\ue011',
|
||
'\ue012', '\ue013', '\ue014', '\ue015',):
|
||
input_text_or_keys(self.owner, vals)
|
||
else:
|
||
self.owner.actions.type(vals)
|
||
|
||
def clear(self, by_js=False):
|
||
"""清空元素文本
|
||
:param by_js: 是否用js方式清空，为False则用全选+del模拟输入删除
|
||
:return: None
|
||
"""
|
||
if by_js:
|
||
self._run_js("this.value='';")
|
||
self._run_js('this.dispatchEvent(new Event("change", {bubbles: true}));')
|
||
return
|
||
|
||
self._input_focus()
|
||
self.input(('\ue009', 'a', '\ue017'), clear=False)
|
||
|
||
def _input_focus(self):
|
||
"""输入前使元素获取焦点"""
|
||
try:
|
||
self.owner._run_cdp('DOM.focus', backendNodeId=self._backend_id)
|
||
except Exception:
|
||
self.click(by_js=None)
|
||
|
||
def focus(self):
|
||
"""使元素获取焦点"""
|
||
try:
|
||
self.owner._run_cdp('DOM.focus', backendNodeId=self._backend_id)
|
||
except Exception:
|
||
self._run_js('this.focus();')
|
||
|
||
def hover(self, offset_x=None, offset_y=None):
|
||
"""鼠标悬停，可接受偏移量，偏移量相对于元素左上角坐标。不传入offset_x和offset_y值时悬停在元素中点
|
||
:param offset_x: 相对元素左上角坐标的x轴偏移量
|
||
:param offset_y: 相对元素左上角坐标的y轴偏移量
|
||
:return: None
|
||
"""
|
||
self.owner.actions.move_to(self, offset_x=offset_x, offset_y=offset_y, duration=.1)
|
||
|
||
def drag(self, offset_x=0, offset_y=0, duration=.5):
|
||
"""拖拽当前元素到相对位置
|
||
:param offset_x: x变化值
|
||
:param offset_y: y变化值
|
||
:param duration: 拖动用时，传入0即瞬间到达
|
||
:return: None
|
||
"""
|
||
curr_x, curr_y = self.rect.midpoint
|
||
offset_x += curr_x
|
||
offset_y += curr_y
|
||
self.drag_to((offset_x, offset_y), duration)
|
||
|
||
def drag_to(self, ele_or_loc, duration=.5):
|
||
"""拖拽当前元素，目标为另一个元素或坐标元组(x, y)
|
||
:param ele_or_loc: 另一个元素或坐标元组，坐标为元素中点的坐标
|
||
:param duration: 拖动用时，传入0即瞬间到达
|
||
:return: None
|
||
"""
|
||
if isinstance(ele_or_loc, ChromiumElement):
|
||
ele_or_loc = ele_or_loc.rect.midpoint
|
||
elif not isinstance(ele_or_loc, (list, tuple)):
|
||
raise TypeError('需要ChromiumElement对象或坐标。')
|
||
self.owner.actions.hold(self).move_to(ele_or_loc, duration=duration).release()
|
||
|
||
def _get_obj_id(self, node_id=None, backend_id=None):
|
||
"""根据传入node id或backend id获取js中的object id
|
||
:param node_id: cdp中的node id
|
||
:param backend_id: backend id
|
||
:return: js中的object id
|
||
"""
|
||
if node_id:
|
||
return self.owner._run_cdp('DOM.resolveNode', nodeId=node_id)['object']['objectId']
|
||
else:
|
||
return self.owner._run_cdp('DOM.resolveNode', backendNodeId=backend_id)['object']['objectId']
|
||
|
||
def _get_node_id(self, obj_id=None, backend_id=None):
|
||
"""根据传入object id或backend id获取cdp中的node id
|
||
:param obj_id: js中的object id
|
||
:param backend_id: backend id
|
||
:return: cdp中的node id
|
||
"""
|
||
if obj_id:
|
||
return self.owner._run_cdp('DOM.requestNode', objectId=obj_id)['nodeId']
|
||
else:
|
||
n = self.owner._run_cdp('DOM.describeNode', backendNodeId=backend_id)['node']
|
||
self._tag = n['localName']
|
||
return n['nodeId']
|
||
|
||
def _get_backend_id(self, node_id):
|
||
"""根据传入node id获取backend id
|
||
:param node_id:
|
||
:return: backend id
|
||
"""
|
||
n = self.owner._run_cdp('DOM.describeNode', nodeId=node_id)['node']
|
||
self._tag = n['localName']
|
||
return n['backendNodeId']
|
||
|
||
def _refresh_id(self):
|
||
"""根据backend id刷新其它id"""
|
||
self._obj_id = self._get_obj_id(backend_id=self._backend_id)
|
||
self._node_id = self._get_node_id(obj_id=self._obj_id)
|
||
|
||
def _get_ele_path(self, mode):
|
||
"""返获取绝对的css路径或xpath路径"""
|
||
if mode == 'xpath':
|
||
txt1 = 'let tag = el.nodeName.toLowerCase();'
|
||
txt3 = ''' && sib.nodeName.toLowerCase()==tag'''
|
||
txt4 = '''
|
||
if(nth>1){path = '/' + tag + '[' + nth + ']' + path;}
|
||
else{path = '/' + tag + path;}'''
|
||
txt5 = '''return path;'''
|
||
|
||
elif mode == 'css':
|
||
txt1 = '''
|
||
let i = el.getAttribute("id");
|
||
if (i){path = '>' + el.tagName.toLowerCase() + "#" + i + path;
|
||
break;}
|
||
'''
|
||
txt3 = ''
|
||
txt4 = '''path = '>' + el.tagName.toLowerCase() + ":nth-child(" + nth + ")" + path;'''
|
||
txt5 = '''return path.substr(1);'''
|
||
|
||
else:
|
||
raise ValueError(f"mode参数只能是'xpath'或'css'，现在是：'{mode}'。")
|
||
|
||
js = '''function(){
|
||
function e(el) {
|
||
//return el;
|
||
if (!(el instanceof Element)) return;
|
||
let path = '';
|
||
while (el.nodeType === Node.ELEMENT_NODE) {
|
||
''' + txt1 + '''
|
||
let sib = el, nth = 0;
|
||
while (sib) {
|
||
if(sib.nodeType === Node.ELEMENT_NODE''' + txt3 + '''){nth += 1;}
|
||
sib = sib.previousSibling;
|
||
}
|
||
''' + txt4 + '''
|
||
el = el.parentNode;
|
||
}
|
||
''' + txt5 + '''
|
||
}
|
||
return e(this);}
|
||
'''
|
||
t = self._run_js(js)
|
||
return f'{t}' if mode == 'css' else t
|
||
|
||
def _set_file_input(self, files):
|
||
"""对上传控件写入路径
|
||
:param files: 文件路径列表或字符串，字符串时多个文件用回车分隔
|
||
:return: None
|
||
"""
|
||
if isinstance(files, str):
|
||
files = files.split('\n')
|
||
files = [str(Path(i).absolute()) for i in files]
|
||
self.owner._run_cdp('DOM.setFileInputFiles', files=files, backendNodeId=self._backend_id)
|
||
|
||
|
||
class ShadowRoot(BaseElement):
|
||
"""ShadowRoot是用于处理ShadowRoot的类，使用方法和ChromiumElement基本一致"""
|
||
|
||
def __init__(self, parent_ele, obj_id=None, backend_id=None):
|
||
"""
|
||
:param parent_ele: shadow root 所在父元素
|
||
:param obj_id: js中的object id
|
||
:param backend_id: cdp中的backend id
|
||
"""
|
||
super().__init__(parent_ele.owner)
|
||
self.tab = self.owner._tab
|
||
self.parent_ele = parent_ele
|
||
if backend_id:
|
||
self._backend_id = backend_id
|
||
self._obj_id = self._get_obj_id(backend_id)
|
||
self._node_id = self._get_node_id(self._obj_id)
|
||
elif obj_id:
|
||
self._obj_id = obj_id
|
||
self._node_id = self._get_node_id(obj_id)
|
||
self._backend_id = self._get_backend_id(self._node_id)
|
||
self._states = None
|
||
self._type = 'ShadowRoot'
|
||
|
||
def __repr__(self):
|
||
return f'<ShadowRoot in {self.parent_ele}>'
|
||
|
||
def __call__(self, locator, index=1, timeout=None):
|
||
"""在内部查找元素
|
||
例：ele2 = ele1('@id=ele_id')
|
||
:param locator: 元素的定位信息，可以是loc元组，或查询字符串
|
||
:param index: 获取第几个，从1开始，可传入负数获取倒数第几个
|
||
:param timeout: 超时时间（秒）
|
||
:return: 元素对象或属性、文本
|
||
"""
|
||
return self.ele(locator, index=index, timeout=timeout)
|
||
|
||
def __eq__(self, other):
|
||
return self._backend_id == getattr(other, '_backend_id', None)
|
||
|
||
@property
|
||
def tag(self):
|
||
"""返回元素标签名"""
|
||
return 'shadow-root'
|
||
|
||
@property
|
||
def html(self):
|
||
"""返回outerHTML文本"""
|
||
return f'<shadow_root>{self.inner_html}</shadow_root>'
|
||
|
||
@property
|
||
def inner_html(self):
|
||
"""返回内部的html文本"""
|
||
return self._run_js('return this.innerHTML;')
|
||
|
||
@property
|
||
def states(self):
|
||
"""返回用于获取元素状态的对象"""
|
||
if self._states is None:
|
||
self._states = ShadowRootStates(self)
|
||
return self._states
|
||
|
||
def run_js(self, script, *args, as_expr=False, timeout=None):
|
||
"""运行javascript代码
|
||
:param script: js文本
|
||
:param args: 参数，按顺序在js文本中对应arguments[0]、arguments[1]...
|
||
:param as_expr: 是否作为表达式运行，为True时args无效
|
||
:param timeout: js超时时间（秒），为None则使用页面timeouts.script设置
|
||
:return: 运行的结果
|
||
"""
|
||
return self._run_js(script, *args, as_expr=as_expr, timeout=timeout)
|
||
|
||
def _run_js(self, script, *args, as_expr=False, timeout=None):
|
||
"""运行javascript代码
|
||
:param script: js文本
|
||
:param args: 参数，按顺序在js文本中对应arguments[0]、arguments[1]...
|
||
:param as_expr: 是否作为表达式运行，为True时args无效
|
||
:param timeout: js超时时间（秒），为None则使用页面timeouts.script设置
|
||
:return: 运行的结果
|
||
"""
|
||
return run_js(self, script, as_expr, self.owner.timeouts.script if timeout is None else timeout, args)
|
||
|
||
def run_async_js(self, script, *args, as_expr=False, timeout=None):
|
||
"""以异步方式执行js代码
|
||
:param script: js文本
|
||
:param args: 参数，按顺序在js文本中对应arguments[0]、arguments[1]...
|
||
:param as_expr: 是否作为表达式运行，为True时args无效
|
||
:param timeout: js超时时间（秒），为None则使用页面timeouts.script设置
|
||
:return: None
|
||
"""
|
||
from threading import Thread
|
||
Thread(target=run_js, args=(self, script, as_expr,
|
||
self.owner.timeouts.script if timeout is None else timeout, args)).start()
|
||
|
||
def parent(self, level_or_loc=1, index=1):
|
||
"""返回上面某一级父元素，可指定层数或用查询语法定位
|
||
:param level_or_loc: 第几级父元素，或定位符
|
||
:param index: 当level_or_loc传入定位符，使用此参数选择第几个结果
|
||
:return: ChromiumElement对象
|
||
"""
|
||
if isinstance(level_or_loc, int):
|
||
loc = f'xpath:./ancestor-or-self::*[{level_or_loc}]'
|
||
|
||
elif isinstance(level_or_loc, (tuple, str)):
|
||
loc = get_loc(level_or_loc, True)
|
||
|
||
if loc[0] == 'css selector':
|
||
raise ValueError('此css selector语法不受支持，请换成xpath。')
|
||
|
||
loc = f'xpath:./ancestor-or-self::{loc[1].lstrip(". / ")}[{index}]'
|
||
|
||
else:
|
||
raise TypeError('level_or_loc参数只能是tuple、int或str。')
|
||
|
||
return self.parent_ele._ele(loc, timeout=0, relative=True, raise_err=False, method='parent()')
|
||
|
||
def child(self, locator='', index=1):
|
||
"""返回直接子元素元素或节点组成的列表，可用查询语法筛选
|
||
:param locator: 用于筛选的查询语法
|
||
:param index: 第几个查询结果，1开始
|
||
:return: 直接子元素或节点文本组成的列表
|
||
"""
|
||
if not locator:
|
||
loc = '*'
|
||
else:
|
||
loc = get_loc(locator, True) # 把定位符转换为xpath
|
||
if loc[0] == 'css selector':
|
||
raise ValueError('此css selector语法不受支持，请换成xpath。')
|
||
loc = loc[1].lstrip('./')
|
||
|
||
loc = f'xpath:./{loc}'
|
||
ele = self._ele(loc, index=index, relative=True)
|
||
|
||
return ele if ele else NoneElement(self.owner, 'child()', {'locator': locator, 'index': index})
|
||
|
||
def next(self, locator='', index=1):
|
||
"""返回当前元素后面一个符合条件的同级元素，可用查询语法筛选，可指定返回筛选结果的第几个
|
||
:param locator: 用于筛选的查询语法
|
||
:param index: 第几个查询结果，1开始
|
||
:return: ChromiumElement对象
|
||
"""
|
||
loc = get_loc(locator, True)
|
||
if loc[0] == 'css selector':
|
||
raise ValueError('此css selector语法不受支持，请换成xpath。')
|
||
|
||
loc = loc[1].lstrip('./')
|
||
xpath = f'xpath:./{loc}'
|
||
ele = self.parent_ele._ele(xpath, index=index, relative=True)
|
||
|
||
return ele if ele else NoneElement(self.owner, 'next()', {'locator': locator, 'index': index})
|
||
|
||
def before(self, locator='', index=1):
|
||
"""返回文档中当前元素前面符合条件的一个元素，可用查询语法筛选，可指定返回筛选结果的第几个
|
||
查找范围不限同级元素，而是整个DOM文档
|
||
:param locator: 用于筛选的查询语法
|
||
:param index: 前面第几个查询结果，1开始
|
||
:return: 本元素前面的某个元素或节点
|
||
"""
|
||
loc = get_loc(locator, True)
|
||
if loc[0] == 'css selector':
|
||
raise ValueError('此css selector语法不受支持，请换成xpath。')
|
||
|
||
loc = loc[1].lstrip('./')
|
||
xpath = f'xpath:./preceding::{loc}'
|
||
ele = self.parent_ele._ele(xpath, index=index, relative=True)
|
||
|
||
return ele if ele else NoneElement(self.owner, 'before()', {'locator': locator, 'index': index})
|
||
|
||
def after(self, locator='', index=1):
|
||
"""返回文档中此当前元素后面符合条件的一个元素，可用查询语法筛选，可指定返回筛选结果的第几个
|
||
查找范围不限同级元素，而是整个DOM文档
|
||
:param locator: 用于筛选的查询语法
|
||
:param index: 后面第几个查询结果，1开始
|
||
:return: 本元素后面的某个元素或节点
|
||
"""
|
||
nodes = self.afters(locator=locator)
|
||
return nodes[index - 1] if nodes else NoneElement(self.owner, 'after()', {'locator': locator, 'index': index})
|
||
|
||
def children(self, locator=''):
|
||
"""返回当前元素符合条件的直接子元素或节点组成的列表，可用查询语法筛选
|
||
:param locator: 用于筛选的查询语法
|
||
:return: 直接子元素或节点文本组成的列表
|
||
"""
|
||
if not locator:
|
||
loc = '*'
|
||
else:
|
||
loc = get_loc(locator, True) # 把定位符转换为xpath
|
||
if loc[0] == 'css selector':
|
||
raise ValueError('此css selector语法不受支持，请换成xpath。')
|
||
loc = loc[1].lstrip('./')
|
||
|
||
loc = f'xpath:./{loc}'
|
||
return self._ele(loc, index=None, relative=True)
|
||
|
||
def nexts(self, locator=''):
|
||
"""返回当前元素后面符合条件的同级元素或节点组成的列表，可用查询语法筛选
|
||
:param locator: 用于筛选的查询语法
|
||
:return: ChromiumElement对象组成的列表
|
||
"""
|
||
loc = get_loc(locator, True)
|
||
if loc[0] == 'css selector':
|
||
raise ValueError('此css selector语法不受支持，请换成xpath。')
|
||
|
||
loc = loc[1].lstrip('./')
|
||
xpath = f'xpath:./{loc}'
|
||
return self.parent_ele._ele(xpath, index=None, relative=True)
|
||
|
||
def befores(self, locator=''):
|
||
"""返回文档中当前元素前面符合条件的元素或节点组成的列表，可用查询语法筛选
|
||
查找范围不限同级元素，而是整个DOM文档
|
||
:param locator: 用于筛选的查询语法
|
||
:return: 本元素前面的元素或节点组成的列表
|
||
"""
|
||
loc = get_loc(locator, True)
|
||
if loc[0] == 'css selector':
|
||
raise ValueError('此css selector语法不受支持，请换成xpath。')
|
||
|
||
loc = loc[1].lstrip('./')
|
||
xpath = f'xpath:./preceding::{loc}'
|
||
return self.parent_ele._ele(xpath, index=None, relative=True)
|
||
|
||
def afters(self, locator=''):
|
||
"""返回文档中当前元素后面符合条件的元素或节点组成的列表，可用查询语法筛选
|
||
查找范围不限同级元素，而是整个DOM文档
|
||
:param locator: 用于筛选的查询语法
|
||
:return: 本元素后面的元素或节点组成的列表
|
||
"""
|
||
eles1 = self.nexts(locator)
|
||
loc = get_loc(locator, True)[1].lstrip('./')
|
||
xpath = f'xpath:./following::{loc}'
|
||
return eles1 + self.parent_ele._ele(xpath, index=None, relative=True)
|
||
|
||
def ele(self, locator, index=1, timeout=None):
|
||
"""返回当前元素下级符合条件的一个元素
|
||
:param locator: 元素的定位信息，可以是loc元组，或查询字符串
|
||
:param index: 获取第几个元素，从1开始，可传入负数获取倒数第几个
|
||
:param timeout: 查找元素超时时间（秒），默认与元素所在页面等待时间一致
|
||
:return: ChromiumElement对象
|
||
"""
|
||
return self._ele(locator, timeout, index=index, method='ele()')
|
||
|
||
def eles(self, locator, timeout=None):
|
||
"""返回当前元素下级所有符合条件的子元素
|
||
:param locator: 元素的定位信息，可以是loc元组，或查询字符串
|
||
:param timeout: 查找元素超时时间（秒），默认与元素所在页面等待时间一致
|
||
:return: ChromiumElement对象组成的列表
|
||
"""
|
||
return self._ele(locator, timeout=timeout, index=None)
|
||
|
||
def s_ele(self, locator=None, index=1, timeout=None):
|
||
"""查找一个符合条件的元素以SessionElement形式返回，处理复杂页面时效率很高
|
||
:param locator: 元素的定位信息，可以是loc元组，或查询字符串
|
||
:param index: 获取第几个，从1开始，可传入负数获取倒数第几个
|
||
:param timeout: 查找元素超时时间（秒），默认与元素所在页面等待时间一致
|
||
:return: SessionElement对象或属性、文本
|
||
"""
|
||
return (make_session_ele(self, locator, index=index, method='s_ele()')
|
||
if self.ele(locator, index=index, timeout=timeout)
|
||
else NoneElement(self, method='s_ele()', args={'locator': locator, 'index': index}))
|
||
|
||
def s_eles(self, locator, timeout=None):
|
||
"""查找所有符合条件的元素以SessionElement列表形式返回，处理复杂页面时效率很高
|
||
:param locator: 元素的定位信息，可以是loc元组，或查询字符串
|
||
:param timeout: 查找元素超时时间（秒），默认与元素所在页面等待时间一致
|
||
:return: SessionElement对象
|
||
"""
|
||
return (make_session_ele(self, locator, index=None)
|
||
if self.ele(locator, timeout=timeout) else SessionElementsList())
|
||
|
||
def _find_elements(self, locator, timeout=None, index=1, relative=False, raise_err=None):
|
||
"""返回当前元素下级符合条件的子元素、属性或节点文本，默认返回第一个
|
||
:param locator: 元素的定位信息，可以是loc元组，或查询字符串
|
||
:param timeout: 查找元素超时时间（秒）
|
||
:param index: 第几个结果，从1开始，可传入负数获取倒数第几个，为None返回所有
|
||
:param relative: MixTab用的表示是否相对定位的参数
|
||
:param raise_err: 找不到元素是是否抛出异常，为None时根据全局设置
|
||
:return: ChromiumElement对象或其组成的列表
|
||
"""
|
||
loc = get_loc(locator, css_mode=False)
|
||
if loc[0] == 'css selector' and str(loc[1]).startswith(':root'):
|
||
loc = loc[0], loc[1][5:]
|
||
|
||
def do_find():
|
||
if loc[0] == 'css selector':
|
||
if index == 1:
|
||
nod_id = self.owner._run_cdp('DOM.querySelector', nodeId=self._node_id, selector=loc[1])['nodeId']
|
||
if nod_id:
|
||
r = make_chromium_eles(self.owner, _ids=nod_id, is_obj_id=False)
|
||
return None if r is False else r
|
||
|
||
else:
|
||
nod_ids = self.owner._run_cdp('DOM.querySelectorAll',
|
||
nodeId=self._node_id, selector=loc[1])['nodeId']
|
||
r = make_chromium_eles(self.owner, _ids=nod_ids, index=index, is_obj_id=False)
|
||
return None if r is False else r
|
||
|
||
else:
|
||
eles = make_session_ele(self, loc, index=None)
|
||
if not eles:
|
||
return None
|
||
|
||
css = []
|
||
for i in eles:
|
||
c = i.css_path
|
||
if c.startswith('html:nth-child(1)>body:nth-child(1)>shadow_root:nth-child(1)'):
|
||
c = c[61:]
|
||
css.append(c)
|
||
if index is not None:
|
||
try:
|
||
node_id = self.owner._run_cdp('DOM.querySelector', nodeId=self._node_id,
|
||
selector=css[index - 1])['nodeId']
|
||
except IndexError:
|
||
return None
|
||
r = make_chromium_eles(self.owner, _ids=node_id, is_obj_id=False)
|
||
return None if r is False else r
|
||
else:
|
||
node_ids = [self.owner._run_cdp('DOM.querySelector', nodeId=self._node_id, selector=i)['nodeId']
|
||
for i in css]
|
||
if 0 in node_ids:
|
||
return None
|
||
r = make_chromium_eles(self.owner, _ids=node_ids, index=index, is_obj_id=False)
|
||
return None if r is False else r
|
||
|
||
timeout = timeout if timeout is not None else self.owner.timeout
|
||
end_time = perf_counter() + timeout
|
||
result = do_find()
|
||
while result is None and perf_counter() <= end_time:
|
||
sleep(.1)
|
||
result = do_find()
|
||
|
||
if result:
|
||
return result
|
||
return NoneElement(self.owner) if index is not None else []
|
||
|
||
def _get_node_id(self, obj_id):
|
||
"""返回元素node id"""
|
||
return self.owner._run_cdp('DOM.requestNode', objectId=obj_id)['nodeId']
|
||
|
||
def _get_obj_id(self, back_id):
|
||
"""返回元素object id"""
|
||
return self.owner._run_cdp('DOM.resolveNode', backendNodeId=back_id)['object']['objectId']
|
||
|
||
def _get_backend_id(self, node_id):
|
||
"""返回元素object id"""
|
||
r = self.owner._run_cdp('DOM.describeNode', nodeId=node_id)['node']
|
||
self._tag = r['localName'].lower()
|
||
return r['backendNodeId']
|
||
|
||
|
||
def find_in_chromium_ele(ele, locator, index=1, timeout=None, relative=True):
|
||
"""在chromium元素中查找
|
||
:param ele: ChromiumElement对象
|
||
:param locator: 元素定位元组
|
||
:param index: 第几个结果，从1开始，可传入负数获取倒数第几个，为None返回所有
|
||
:param timeout: 查找元素超时时间（秒）
|
||
:param relative: MixTab用于标记是否相对定位使用
|
||
:return: 返回ChromiumElement元素或它们组成的列表
|
||
"""
|
||
# ---------------处理定位符---------------
|
||
if isinstance(locator, (str, tuple)):
|
||
loc = get_loc(locator)
|
||
else:
|
||
raise ValueError(f"定位符必须为str或长度为2的tuple对象。现在是：{locator}")
|
||
|
||
loc_str = loc[1]
|
||
if loc[0] == 'xpath' and loc[1].lstrip().startswith('/'):
|
||
loc_str = f'.{loc_str}'
|
||
elif loc[0] == 'css selector' and loc[1].lstrip().startswith('>'):
|
||
loc_str = f'{ele.css_path}{loc[1]}'
|
||
loc = loc[0], loc_str
|
||
|
||
timeout = timeout if timeout is not None else ele.owner.timeout
|
||
|
||
# ---------------执行查找-----------------
|
||
if loc[0] == 'xpath':
|
||
return find_by_xpath(ele, loc[1], index, timeout, relative=relative)
|
||
|
||
else:
|
||
return find_by_css(ele, loc[1], index, timeout)
|
||
|
||
|
||
def find_by_xpath(ele, xpath, index, timeout, relative=True):
|
||
"""执行用xpath在元素中查找元素
|
||
:param ele: 在此元素中查找
|
||
:param xpath: 查找语句
|
||
:param index: 第几个结果，从1开始，可传入负数获取倒数第几个，为None返回所有
|
||
:param timeout: 超时时间（秒）
|
||
:param relative: 是否相对定位
|
||
:return: ChromiumElement或其组成的列表
|
||
"""
|
||
type_txt = '9' if index == 1 else '7'
|
||
node_txt = 'this.contentDocument' if ele.tag in __FRAME_ELEMENT__ and not relative else 'this'
|
||
js = make_js_for_find_ele_by_xpath(xpath, type_txt, node_txt)
|
||
ele.owner.wait.doc_loaded()
|
||
|
||
def do_find():
|
||
res = ele.owner._run_cdp('Runtime.callFunctionOn', functionDeclaration=js, objectId=ele._obj_id,
|
||
returnByValue=False, awaitPromise=True, userGesture=True)
|
||
if res['result']['type'] == 'string':
|
||
return res['result']['value']
|
||
if 'exceptionDetails' in res:
|
||
if 'The result is not a node set' in res['result']['description']:
|
||
js1 = make_js_for_find_ele_by_xpath(xpath, '1', node_txt)
|
||
res = ele.owner._run_cdp('Runtime.callFunctionOn', functionDeclaration=js1, objectId=ele._obj_id,
|
||
returnByValue=False, awaitPromise=True, userGesture=True)
|
||
return res['result']['value']
|
||
else:
|
||
raise SyntaxError(f'查询语句错误：\n{res}')
|
||
|
||
if res['result']['subtype'] == 'null' or res['result']['description'] in ('NodeList(0)', 'Array(0)'):
|
||
return None
|
||
|
||
if index == 1:
|
||
r = make_chromium_eles(ele.owner, _ids=res['result']['objectId'], is_obj_id=True)
|
||
return None if r is False else r
|
||
|
||
else:
|
||
res = ele.owner._run_cdp('Runtime.getProperties', objectId=res['result']['objectId'],
|
||
ownProperties=True)['result'][:-1]
|
||
if index is None:
|
||
r = ChromiumElementsList(page=ele.owner)
|
||
for i in res:
|
||
if i['value']['type'] == 'object':
|
||
r.append(make_chromium_eles(ele.owner, _ids=i['value']['objectId'], is_obj_id=True))
|
||
else:
|
||
r.append(i['value']['value'])
|
||
return None if False in r else r
|
||
|
||
else:
|
||
eles_count = len(res)
|
||
if eles_count == 0 or abs(index) > eles_count:
|
||
return None
|
||
|
||
index1 = eles_count + index + 1 if index < 0 else index
|
||
res = res[index1 - 1]
|
||
if res['value']['type'] == 'object':
|
||
r = make_chromium_eles(ele.owner, _ids=res['value']['objectId'], is_obj_id=True)
|
||
else:
|
||
r = res['value']['value']
|
||
return None if r is False else r
|
||
|
||
end_time = perf_counter() + timeout
|
||
result = do_find()
|
||
while result is None and perf_counter() < end_time:
|
||
sleep(.1)
|
||
result = do_find()
|
||
|
||
if result:
|
||
return result
|
||
return NoneElement(ele.owner) if index is not None else ChromiumElementsList(page=ele.owner)
|
||
|
||
|
||
def find_by_css(ele, selector, index, timeout):
|
||
"""执行用css selector在元素中查找元素
|
||
:param ele: 在此元素中查找
|
||
:param selector: 查找语句
|
||
:param index: 第几个结果，从1开始，可传入负数获取倒数第几个，为None返回所有
|
||
:param timeout: 超时时间（秒）
|
||
:return: ChromiumElement或其组成的列表
|
||
"""
|
||
selector = selector.replace('"', r'\"')
|
||
find_all = '' if index == 1 else 'All'
|
||
node_txt = 'this.contentDocument' if ele.tag in ('iframe', 'frame', 'shadow-root') else 'this'
|
||
js = f'function(){{return {node_txt}.querySelector{find_all}("{selector}");}}'
|
||
|
||
ele.owner.wait.doc_loaded()
|
||
|
||
def do_find():
|
||
res = ele.owner._run_cdp('Runtime.callFunctionOn', functionDeclaration=js, objectId=ele._obj_id,
|
||
returnByValue=False, awaitPromise=True, userGesture=True)
|
||
|
||
if 'exceptionDetails' in res:
|
||
raise SyntaxError(f'查询语句错误：\n{res}')
|
||
if res['result']['subtype'] == 'null' or res['result']['description'] in ('NodeList(0)', 'Array(0)'):
|
||
return None
|
||
|
||
if index == 1:
|
||
r = make_chromium_eles(ele.owner, _ids=res['result']['objectId'], is_obj_id=True)
|
||
return None if r is False else r
|
||
|
||
else:
|
||
obj_ids = [i['value']['objectId'] for i in ele.owner._run_cdp('Runtime.getProperties',
|
||
objectId=res['result']['objectId'],
|
||
ownProperties=True)['result']]
|
||
r = make_chromium_eles(ele.owner, _ids=obj_ids, index=index, is_obj_id=True)
|
||
return None if r is False else r
|
||
|
||
end_time = perf_counter() + timeout
|
||
result = do_find()
|
||
while result is None and perf_counter() < end_time:
|
||
sleep(.1)
|
||
result = do_find()
|
||
|
||
if result:
|
||
return result
|
||
return NoneElement(ele.owner) if index is not None else ChromiumElementsList(page=ele.owner)
|
||
|
||
|
||
def make_chromium_eles(page, _ids, index=1, is_obj_id=True, ele_only=False):
|
||
"""根据node id或object id生成相应元素对象
|
||
:param page: ChromiumPage对象
|
||
:param _ids: 元素的id列表
|
||
:param index: 获取第几个，为None返回全部
|
||
:param is_obj_id: 传入的id是obj id还是node id
|
||
:param ele_only: 是否只返回ele，在页面查找元素时生效
|
||
:return: 浏览器元素对象或它们组成的列表，生成失败返回False
|
||
"""
|
||
if is_obj_id:
|
||
get_node_func = _get_node_by_obj_id
|
||
else:
|
||
get_node_func = _get_node_by_node_id
|
||
if not isinstance(_ids, (list, tuple)):
|
||
_ids = (_ids,)
|
||
|
||
if index is not None: # 获取一个
|
||
if ele_only:
|
||
for obj_id in _ids:
|
||
tmp = get_node_func(page, obj_id, ele_only)
|
||
if tmp is not None:
|
||
return tmp
|
||
return False
|
||
|
||
else:
|
||
obj_id = _ids[index - 1]
|
||
return get_node_func(page, obj_id, ele_only)
|
||
|
||
else: # 获取全部
|
||
nodes = ChromiumElementsList(page=page)
|
||
for obj_id in _ids:
|
||
tmp = get_node_func(page, obj_id, ele_only)
|
||
if tmp is False:
|
||
return False
|
||
elif tmp is not None:
|
||
nodes.append(tmp)
|
||
return nodes
|
||
|
||
|
||
def _get_node_info(page, id_type, _id):
|
||
if not _id:
|
||
return False
|
||
arg = {id_type: _id}
|
||
node = page.driver.run('DOM.describeNode', **arg)
|
||
if 'error' in node:
|
||
return False
|
||
return node
|
||
|
||
|
||
def _get_node_by_obj_id(page, obj_id, ele_only):
|
||
"""根据obj id返回元素对象或文本，ele_only时如果是文本返回None，出错返回False"""
|
||
node = _get_node_info(page, 'objectId', obj_id)
|
||
if node is False:
|
||
return False
|
||
if node['node']['nodeName'] in ('#text', '#comment'):
|
||
return None if ele_only else node['node']['nodeValue']
|
||
else:
|
||
return _make_ele(page, obj_id, node)
|
||
|
||
|
||
def _get_node_by_node_id(page, node_id, ele_only):
|
||
"""根据node id返回元素对象或文本，ele_only时如果是文本返回None，出错返回False"""
|
||
node = _get_node_info(page, 'nodeId', node_id)
|
||
if node is False:
|
||
return False
|
||
if node['node']['nodeName'] in ('#text', '#comment'):
|
||
return None if ele_only else node['node']['nodeValue']
|
||
else:
|
||
obj_id = page.driver.run('DOM.resolveNode', nodeId=node_id)
|
||
if 'error' in obj_id:
|
||
return False
|
||
obj_id = obj_id['object']['objectId']
|
||
return _make_ele(page, obj_id, node)
|
||
|
||
|
||
def _make_ele(page, obj_id, node):
|
||
ele = ChromiumElement(page, obj_id=obj_id, node_id=node['node']['nodeId'],
|
||
backend_id=node['node']['backendNodeId'])
|
||
if ele.tag in __FRAME_ELEMENT__:
|
||
from .._pages.chromium_frame import ChromiumFrame
|
||
ele = ChromiumFrame(page, ele, node)
|
||
return ele
|
||
|
||
|
||
def make_js_for_find_ele_by_xpath(xpath, type_txt, node_txt):
|
||
"""生成用xpath在元素中查找元素的js文本
|
||
:param xpath: xpath文本
|
||
:param type_txt: 查找类型
|
||
:param node_txt: 节点类型
|
||
:return: js文本
|
||
"""
|
||
for_txt = ''
|
||
|
||
# 获取第一个元素、节点或属性
|
||
if type_txt == '9':
|
||
return_txt = '''
|
||
if(e.singleNodeValue==null){return null;}
|
||
else if(e.singleNodeValue.constructor.name=="Text"){return e.singleNodeValue.data;}
|
||
else if(e.singleNodeValue.constructor.name=="Attr"){return e.singleNodeValue.nodeValue;}
|
||
else if(e.singleNodeValue.constructor.name=="Comment"){return e.singleNodeValue.nodeValue;}
|
||
else{return e.singleNodeValue;}'''
|
||
|
||
# 按顺序获取所有元素、节点或属性
|
||
elif type_txt == '7':
|
||
for_txt = """
|
||
let a=new Array();
|
||
for(let i = 0; i <e.snapshotLength ; i++){
|
||
if(e.snapshotItem(i).constructor.name=="Text"){a.push(e.snapshotItem(i).data);}
|
||
else if(e.snapshotItem(i).constructor.name=="Attr"){a.push(e.snapshotItem(i).nodeValue);}
|
||
else if(e.snapshotItem(i).constructor.name=="Comment"){a.push(e.snapshotItem(i).nodeValue);}
|
||
else{a.push(e.snapshotItem(i));}}"""
|
||
return_txt = 'return a;'
|
||
|
||
elif type_txt == '2':
|
||
return_txt = 'return e.stringValue;'
|
||
elif type_txt == '1':
|
||
return_txt = 'return e.numberValue;'
|
||
else:
|
||
return_txt = 'return e.singleNodeValue;'
|
||
|
||
xpath = xpath.replace(r"'", r"\'")
|
||
js = f'function(){{let e=document.evaluate(\'{xpath}\',{node_txt},null,{type_txt},null);\n{for_txt}\n{return_txt}}}'
|
||
|
||
return js
|
||
|
||
|
||
def run_js(page_or_ele, script, as_expr, timeout, args=None):
|
||
"""运行javascript代码
|
||
:param page_or_ele: 页面对象或元素对象
|
||
:param script: js文本
|
||
:param as_expr: 是否作为表达式运行，为True时args无效
|
||
:param timeout: 超时时间（秒）
|
||
:param args: 参数，按顺序在js文本中对应arguments[0]、arguments[1]...
|
||
:return: js执行结果
|
||
"""
|
||
if isinstance(page_or_ele, (ChromiumElement, ShadowRoot)):
|
||
is_page = False
|
||
page = page_or_ele.owner
|
||
obj_id = page_or_ele._obj_id
|
||
else:
|
||
is_page = True
|
||
page = page_or_ele
|
||
end_time = perf_counter() + 5
|
||
while perf_counter() < end_time:
|
||
obj_id = page_or_ele._root_id
|
||
if obj_id is not None:
|
||
break
|
||
sleep(.01)
|
||
else:
|
||
raise RuntimeError('js运行环境出错。')
|
||
|
||
if page.states.has_alert:
|
||
raise AlertExistsError
|
||
|
||
try:
|
||
if Path(script).exists():
|
||
with open(script, 'r', encoding='utf-8') as f:
|
||
script = f.read()
|
||
except OSError:
|
||
pass
|
||
|
||
end_time = perf_counter() + timeout
|
||
try:
|
||
if as_expr:
|
||
res = page._run_cdp('Runtime.evaluate', expression=script, returnByValue=False,
|
||
awaitPromise=True, userGesture=True, _timeout=timeout, _ignore=AlertExistsError)
|
||
|
||
else:
|
||
args = args or ()
|
||
if not is_js_func(script):
|
||
script = f'function(){{{script}}}'
|
||
res = page._run_cdp('Runtime.callFunctionOn', functionDeclaration=script, objectId=obj_id,
|
||
arguments=[convert_argument(arg) for arg in args], returnByValue=False,
|
||
awaitPromise=True, userGesture=True, _timeout=timeout, _ignore=AlertExistsError)
|
||
except TimeoutError:
|
||
raise TimeoutError(f'执行js超时（等待{timeout}秒）。')
|
||
except ContextLostError:
|
||
raise ContextLostError('页面已被刷新，请尝试等待页面加载完成再执行操作。') if is_page else ElementLostError(
|
||
'原来获取到的元素对象已不在页面内。')
|
||
|
||
if not res: # _timeout=0或js激活alert时
|
||
return None
|
||
|
||
exceptionDetails = res.get('exceptionDetails')
|
||
if exceptionDetails:
|
||
raise JavaScriptError(f'\njavascript运行错误：\n{script}\n错误信息: \n{exceptionDetails}')
|
||
|
||
try:
|
||
return parse_js_result(page, page_or_ele, res.get('result'), end_time)
|
||
except Exception:
|
||
from DrissionPage import __version__
|
||
raise RuntimeError(f'\njs结果解析错误\n版本：{__version__}\n内容：{res}\njs：{script}\n'
|
||
f'出现这个错误可能意味着程序有bug，请把错误信息和重现方法告知作者，谢谢。\n'
|
||
f'报告网站：https://gitee.com/g1879/DrissionPage/issues')
|
||
|
||
|
||
def parse_js_result(page, ele, result, end_time):
|
||
"""解析js返回的结果"""
|
||
if 'unserializableValue' in result:
|
||
return result['unserializableValue']
|
||
|
||
the_type = result['type']
|
||
if the_type == 'object':
|
||
sub_type = result.get('subtype', None)
|
||
if sub_type == 'null':
|
||
return None
|
||
|
||
elif sub_type == 'node':
|
||
class_name = result['className']
|
||
if class_name == 'ShadowRoot':
|
||
return ShadowRoot(ele, obj_id=result['objectId'])
|
||
elif class_name == 'HTMLDocument':
|
||
return result
|
||
else:
|
||
r = make_chromium_eles(page, _ids=result['objectId'])
|
||
if r is False:
|
||
raise ElementLostError
|
||
return r
|
||
|
||
elif sub_type == 'array':
|
||
r = page._run_cdp('Runtime.getProperties', objectId=result['objectId'], ownProperties=True)['result']
|
||
return [parse_js_result(page, ele, result=i['value'], end_time=end_time) for i in r if i['name'].isdigit()]
|
||
|
||
elif 'objectId' in result:
|
||
timeout = end_time - perf_counter()
|
||
if timeout < 0:
|
||
return
|
||
js = 'function(){return JSON.stringify(this);}'
|
||
r = page._run_cdp('Runtime.callFunctionOn', functionDeclaration=js, objectId=result['objectId'],
|
||
returnByValue=False, awaitPromise=True, userGesture=True, _ignore=AlertExistsError,
|
||
_timeout=timeout)
|
||
return loads(parse_js_result(page, ele, r['result'], end_time))
|
||
|
||
else:
|
||
return result.get('value', result)
|
||
|
||
elif the_type == 'undefined':
|
||
return None
|
||
|
||
elif the_type == 'function':
|
||
return result['description']
|
||
|
||
else:
|
||
return result['value']
|
||
|
||
|
||
def convert_argument(arg):
|
||
"""把参数转换成js能够接收的形式"""
|
||
if isinstance(arg, ChromiumElement):
|
||
return {'objectId': arg._obj_id}
|
||
|
||
elif isinstance(arg, (int, float, str, bool, dict)):
|
||
return {'value': arg}
|
||
|
||
from math import inf
|
||
if arg == inf:
|
||
return {'unserializableValue': 'Infinity'}
|
||
elif arg == -inf:
|
||
return {'unserializableValue': '-Infinity'}
|
||
|
||
raise TypeError(f'不支持参数{arg}的类型：{type(arg)}')
|
||
|
||
|
||
class Pseudo(object):
|
||
def __init__(self, ele):
|
||
"""
|
||
:param ele: ChromiumElement
|
||
"""
|
||
self._ele = ele
|
||
|
||
@property
|
||
def before(self):
|
||
"""返回当前元素的::before伪元素内容"""
|
||
return self._ele.style('content', 'before')
|
||
|
||
@property
|
||
def after(self):
|
||
"""返回当前元素的::after伪元素内容"""
|
||
return self._ele.style('content', 'after')
|
||
|
||
|
||
def _check_ele(ele, loc_data):
|
||
"""检查元素是否符合loc_data指定的要求
|
||
:param ele: 元素对象
|
||
:param loc_data: 格式： {'and': bool, 'args': ['属性名称', '匹配方式', '属性值', 是否否定]}
|
||
:return: bool
|
||
"""
|
||
attrs = ele.attrs
|
||
if loc_data['and']:
|
||
ok = True
|
||
for i in loc_data['args']:
|
||
name, symbol, value, deny = i
|
||
if name == 'tag()':
|
||
arg = ele.tag
|
||
symbol = '='
|
||
elif name == 'text()':
|
||
arg = ele.raw_text
|
||
elif name is None:
|
||
arg = None
|
||
else:
|
||
arg = attrs.get(name, '')
|
||
|
||
if ((symbol == '=' and ((deny and arg == value) or (not deny and arg != value)))
|
||
or (symbol == ':' and ((deny and value in arg) or (not deny and value not in arg)))
|
||
or (symbol == '^' and ((deny and arg.startswith(value))
|
||
or (not deny and not arg.startswith(value))))
|
||
or (symbol == '$' and ((deny and arg.endswith(value)) or (not deny and not arg.endswith(value))))
|
||
or (arg is None and attrs)):
|
||
ok = False
|
||
break
|
||
|
||
else:
|
||
ok = False
|
||
for i in loc_data['args']:
|
||
name, value, symbol, deny = i
|
||
if name == 'tag()':
|
||
arg = ele.tag
|
||
symbol = '='
|
||
elif name == 'text()':
|
||
arg = ele.text
|
||
elif name is None:
|
||
arg = None
|
||
else:
|
||
arg = attrs.get(name, '')
|
||
|
||
if ((symbol == '=' and ((not deny and arg == value) or (deny and arg != value)))
|
||
or (symbol == ':' and ((not deny and value in arg) or (deny and value not in arg)))
|
||
or (symbol == '^' and ((not deny and arg.startswith(value))
|
||
or (deny and not arg.startswith(value))))
|
||
or (symbol == '$' and ((not deny and arg.endswith(value)) or (deny and not arg.endswith(value))))
|
||
or (arg is None and not attrs)):
|
||
ok = True
|
||
break
|
||
|
||
return ok
|