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"""App configuration for dashboard."""
from typing import List, Union
import vizro.models as vm
from chart_groups import ALL_CHART_GROUP, CHART_GROUPS, ChartGroup, IncompletePage
from custom_components import FlexContainer, Markdown
from vizro import Vizro
def make_chart_card(page: Union[vm.Page, IncompletePage]) -> vm.Card:
"""Makes a card with svg icon, linked to the right page if page is complete.
Args:
page: page to make card for
Returns: card with svg icon, linked to the right page if page is complete.
"""
# There's one SVG per chart title, so that e.g. pages distribution-butterfly and deviation-butterfly, which both
# have title "Butterfly", correspond to butterfly.svg.
# Incomplete pages have page.path = "" so won't be linked to here.
svg_name = page.title.lower().replace(" ", "-")
return vm.Card(
text=f"""
#### {page.title}
""",
href=page.path,
)
def make_homepage_container(chart_group: ChartGroup) -> vm.Container:
"""Makes a container with cards for each completed and incomplete chart in chart_group.
Args:
chart_group: group of charts to make container for.
Returns: container with cards for each chart in chart_group.
"""
# Pages are sorted in title's alphabetical order and deduplicated so that e.g. pages distribution-butterfly and
# deviation-butterfly, which both have title "Butterfly", correspond to a single card.
return vm.Container(
title=chart_group.name,
layout=vm.Layout(grid=[[0, 1, 1]], col_gap="40px"),
components=[
Markdown(text=chart_group.intro_text, classname="intro-text"),
FlexContainer(
components=[
make_chart_card(page)
for page in sorted(
_remove_duplicates(chart_group.pages + chart_group.incomplete_pages),
key=lambda page: page.title,
)
],
),
],
)
def _remove_duplicates(pages: List[Union[vm.Page, IncompletePage]]) -> List[Union[vm.Page, IncompletePage]]:
# Deduplicate pages that have the same title. Using reversed means that the page that is kept is the first one
# in the dashboard. This will be the one that the card on the homepage links to.
return list({page.title: page for page in reversed(pages)}.values())
def make_navlink(chart_group: ChartGroup) -> vm.NavLink:
"""Makes a navlink with icon and links to every complete page within chart_group.
Args:
chart_group: chart_group to make a navlink for.
Returns: navlink for chart_group.
"""
# Pages are sorted in alphabetical order within each chart group.
return vm.NavLink(
label=chart_group.name,
pages={chart_group.name: [page.id for page in sorted(chart_group.pages, key=lambda page: page.title)]},
icon=chart_group.icon,
)
homepage = vm.Page(
title="Overview",
components=[
vm.Tabs(tabs=[make_homepage_container(chart_group) for chart_group in [ALL_CHART_GROUP, *CHART_GROUPS]]),
],
)
# TODO: consider whether each chart group should have its own individual homepage,
# e.g. at http://localhost:8050/deviation/. This could just repeat the content of the tab from the homepage and would
# work nicely with the hierarchical navigation.
dashboard = vm.Dashboard(
# ALL_CHART_GROUP.pages has duplicated pages, e.g. both distribution-butterfly and deviation-butterfly.
title="Vizro - Visual Vocabulary",
pages=[homepage, *ALL_CHART_GROUP.pages],
navigation=vm.Navigation(
nav_selector=vm.NavBar(
items=[
vm.NavLink(label="Overview", pages=[homepage.id], icon="Home"),
]
+ [make_navlink(chart_group) for chart_group in CHART_GROUPS]
)
),
)
app = Vizro().build(dashboard)
server = app.dash.server
if __name__ == "__main__":
app.run()
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