4d75c18098
Fixed the edX middleware to lazily create request context for Mako templates, so that it is based on any changes made to the request object. Verified that with this fix the "Instructor" tab is correctly hidden when a staff member is viewing the course as a student.
96 lines
3.0 KiB
Python
96 lines
3.0 KiB
Python
"""
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High-level tab navigation.
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"""
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from bok_choy.page_object import PageObject
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from bok_choy.promise import Promise, EmptyPromise
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class TabNavPage(PageObject):
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"""
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High-level tab navigation.
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"""
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url = None
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def is_browser_on_page(self):
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return self.q(css='ol.course-tabs').present
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def go_to_tab(self, tab_name):
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"""
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Navigate to the tab `tab_name`.
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"""
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if tab_name not in ['Courseware', 'Course Info', 'Discussion', 'Wiki', 'Progress']:
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self.warning("'{0}' is not a valid tab name".format(tab_name))
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# The only identifier for individual tabs is the link href
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# so we find the tab with `tab_name` in its text.
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tab_css = self._tab_css(tab_name)
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if tab_css is not None:
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self.q(css=tab_css).first.click()
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else:
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self.warning("No tabs found for '{0}'".format(tab_name))
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self._is_on_tab_promise(tab_name).fulfill()
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def is_on_tab(self, tab_name):
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"""
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Return a boolean indicating whether the current tab is `tab_name`.
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Because this is a public method, it checks that we're on the right page
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before accessing the DOM.
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"""
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return self._is_on_tab(tab_name)
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def _tab_css(self, tab_name):
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"""
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Return the CSS to click for `tab_name`.
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If no tabs exist for that name, return `None`.
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"""
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all_tabs = self.tab_names
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try:
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tab_index = all_tabs.index(tab_name)
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except ValueError:
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return None
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else:
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return 'ol.course-tabs li:nth-of-type({0}) a'.format(tab_index + 1)
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@property
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def tab_names(self):
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"""
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Return the list of available tab names. If no tab names
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are available, wait for them to load. Raises a `BrokenPromiseError`
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if the tab names fail to load.
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"""
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def _check_func():
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tab_names = self.q(css='ol.course-tabs li a').text
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return (len(tab_names) > 0, tab_names)
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return Promise(_check_func, "Get all tab names").fulfill()
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def _is_on_tab(self, tab_name):
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"""
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Return a boolean indicating whether the current tab is `tab_name`.
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This is a private method, so it does NOT enforce the page check,
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which is what we want when we're polling the DOM in a promise.
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"""
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current_tab_list = self.q(css='ol.course-tabs > li > a.active').text
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if len(current_tab_list) == 0:
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self.warning("Could not find current tab")
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return False
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else:
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return current_tab_list[0].strip().split('\n')[0] == tab_name
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def _is_on_tab_promise(self, tab_name):
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"""
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Return a `Promise` that the user is on the tab `tab_name`.
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"""
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# Use the private version of _is_on_tab to skip the page check
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return EmptyPromise(
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lambda: self._is_on_tab(tab_name),
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"{0} is the current tab".format(tab_name)
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)
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