def check(context): # type: (xiblint.xibcontext.XibContext) -> None
for button in context.tree.findall(".//button"):
state_normal = button.find("./state[@key='normal']")
if (state_normal is None or 'title' in state_normal.attrib
or view_is_accessibility_element(button) is False
or view_accessibility_label(button)
or get_view_user_defined_attr(button, 'accessibilityFormat')):
continue
if 'image' in state_normal.attrib:
context.error(
button, "Button with image '{}' and no title; "
"should either have an accessibility label or 'Accessibility Enabled' unchecked",
state_normal.attrib['image'])
if 'backgroundImage' in state_normal.attrib:
context.error(
button, "Button with background image '{}' and no title "
"should either have an accessibility label or 'Accessibility Enabled' unchecked",
state_normal.attrib['backgroundImage'])
# For barButtonItem, we expect use of a LyftUI extension
for bar_button_item in context.tree.findall(".//barButtonItem"):
if ('image' in bar_button_item.attrib
and 'title' not in bar_button_item.attrib
and get_view_user_defined_attr(bar_button_item,
'voiceoverLabel') is None):
context.error(
bar_button_item, "Bar button item with image {} and no title "
"should have a user-defined `voiceoverLabel` attribute",
bar_button_item.get('image'))
def check_view(context, view):
accessibility_source_destination_ids = [
outlet_connection.get('destination')
for outlet_connection in view.findall(
"./connections/outletCollection[@property='accessibilitySources']")
]
accessibility_sources = [
context.tree.find(".//*[@id='{}']".format(destination_id))
for destination_id in accessibility_source_destination_ids
]
accessibility_sources_count = len(accessibility_sources)
#
# Ensure accessibilityFormat iff accessibilitySources
#
accessibility_format = get_view_user_defined_attr(view,
'accessibilityFormat')
if accessibility_format is None and accessibility_sources_count != 0:
context.error(
view,
"View has {} accessibility source(s) but accessibilityFormat is unset.",
accessibility_sources_count)
return
used_identifiers = set(get_accessibility_identifiers(accessibility_format))
if used_identifiers:
check_new_format(context, view, accessibility_format,
accessibility_sources, used_identifiers)
else:
check_old_format(context, view, accessibility_format,
accessibility_sources)
def check(self, context): # type: (XibContext) -> None
for image_view in context.tree.findall(".//imageView"):
if (
view_is_accessibility_element(image_view) is True and
not view_accessibility_label(image_view) and
not get_view_user_defined_attr(image_view, 'accessibilityFormat')
):
context.error(image_view, "Image is accessible but has no accessibility label")
def check(context): # type: (xiblint.xibcontext.XibContext) -> None
for element in context.tree.findall(".//textField") + context.tree.findall(
".//textView"):
placeholder = (element.get('placeholder') if element.tag == 'textField'
else get_view_user_defined_attr(element, 'placeholder'))
if (placeholder is not None
and element.find('./accessibility[@label]') is None
and view_is_accessibility_element(element) is not False):
context.error(
element,
"{} with placeholder text '{}' but no accessibility label",
element.tag, element.get('placeholder'))
def check(self, context): # type: (XibContext) -> None
for button in context.tree.findall(".//button"):
state_normal = button.find("./state[@key='normal']")
if (state_normal is None or 'title' in state_normal.attrib
or view_is_accessibility_element(button) is False
or view_accessibility_label(button) or
get_view_user_defined_attr(button, 'accessibilityFormat')):
continue
if 'image' in state_normal.attrib:
context.error(
button, "Button with image '{}' and no title; "
"should either have an accessibility label or 'Accessibility Enabled' unchecked",
state_normal.attrib['image'])
if 'backgroundImage' in state_normal.attrib:
context.error(
button, "Button with background image '{}' and no title "
"should either have an accessibility label or 'Accessibility Enabled' unchecked",
state_normal.attrib['backgroundImage'])