deselect all tabs in dcc tab component
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- Python
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Description
I'm building an application that is using the tab dcc component. This component provide the option of not selecting anything as initial value. I want to take davantage of this feature to display specific information but if I interact with the tabs I have no way to go back to a "nothing selected" state.
The following demo application is showing this exact behaviour, once I click somewhere i cannot show back the "dark" content.
import dash
from dash import dcc, html
# Initialize Dash app
app = dash.Dash(__name__)
app.layout = html.Div([
dcc.Tabs(
id="tabs-example",
value=None, # No tab selected by default
children=[
dcc.Tab(label="Tab Alpha", value="alpha"),
dcc.Tab(label="Tab Beta", value="beta"),
dcc.Tab(label="Tab Gamma", value="gamma"),
],
),
html.Div(id="tabs-content", style={"padding": "20px", "fontSize": "18px"})
])
@app.callback(
dash.Output("tabs-content", "children"),
dash.Output("tabs-content", "style"),
dash.Input("tabs-example", "value"),
)
def update_content(selected_tab):
content_styles = {"padding": "20px", "fontSize": "18px"}
if selected_tab == "alpha":
return html.P("Lorem ipsum dolor sit amet, consectetur adipiscing elit."), {**content_styles, "color": "red"}
elif selected_tab == "beta":
return html.P("Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua."), {**content_styles, "color": "blue"}
elif selected_tab == "gamma":
return html.P("Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris."), {**content_styles, "color": "green"}
else:
return html.P("Nothing selected", style={"color": "black"}), content_styles
# Run app
if __name__ == "__main__":
app.run_server(debug=True)
Can you had a way to get back to this state like clicking again on the selected one ?
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First steps
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- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Reproduce the behavior with the supplied Python dcc.Tabs demo, starting with value=None and clicking a selected tab. Check the Tabs component's current selection handling and existing tests; no file paths are given in the issue. Done means a selected tab can return to the no-selection state and the callback receives None.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- frontend
- Issue type
- Feature
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100