Andrew Charlwood
10739ca84d
- Add get_directorate_summary() query for per-directorate patient/drug counts - Create trust_comparison.py with landing grid and 6-chart dashboard layout - Wire directorate card clicks and back button through app-state callbacks - Add TC landing and dashboard CSS per Phase 10 design spec - Placeholder charts for 6 dashboard graphs (filled in Task 10.8) - Chart type toggle clears selected directorate when switching modes
132 lines
4.8 KiB
Python
132 lines
4.8 KiB
Python
"""Callbacks for Trust Comparison landing page and dashboard navigation."""
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from dash import html, Input, Output, State, ctx, no_update
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import plotly.graph_objects as go
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def register_trust_comparison_callbacks(app):
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"""Register Trust Comparison view callbacks."""
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@app.callback(
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Output("tc-landing-grid", "children"),
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Output("tc-landing-grid", "className"),
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Output("tc-landing-desc", "children"),
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Input("app-state", "data"),
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)
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def populate_landing_grid(app_state):
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"""Populate the landing page grid with directorate/indication cards."""
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if not app_state:
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return [], "tc-landing__grid", "Select a directorate to compare drug usage across trusts."
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from dash_app.data.queries import get_directorate_summary
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chart_type = app_state.get("chart_type", "directory")
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date_filter_id = app_state.get("date_filter_id", "all_6mo")
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summaries = get_directorate_summary(date_filter_id, chart_type)
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# Build card buttons
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cards = []
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for item in summaries:
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name = item["name"]
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patients = item["patients"]
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drugs = item["drugs"]
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cards.append(
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html.Button(
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className="tc-card",
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id={"type": "tc-selector", "index": name},
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n_clicks=0,
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children=[
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html.Div(name, className="tc-card__name"),
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html.Div(
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className="tc-card__stats",
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children=[
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html.Span(
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f"{patients:,} patients",
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className="tc-card__stat",
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),
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html.Span("\u00b7", className="tc-card__dot"),
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html.Span(
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f"{drugs} drugs",
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className="tc-card__stat",
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),
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],
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),
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],
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)
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)
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# Grid class: wider for indication mode (more items)
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grid_cls = "tc-landing__grid"
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if chart_type == "indication":
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grid_cls += " tc-landing__grid--wide"
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# Description text adapts to chart type
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if chart_type == "indication":
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desc = "Select an indication to compare drug usage across trusts."
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else:
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desc = "Select a directorate to compare drug usage across trusts."
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return cards, grid_cls, desc
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@app.callback(
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Output("trust-comparison-landing", "style"),
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Output("trust-comparison-dashboard", "style"),
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Output("tc-dashboard-title", "children"),
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Input("app-state", "data"),
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)
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def toggle_tc_subviews(app_state):
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"""Toggle between landing page and 6-chart dashboard."""
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if not app_state:
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return {}, {"display": "none"}, ""
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selected = app_state.get("selected_comparison_directorate")
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show = {}
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hide = {"display": "none"}
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if selected:
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chart_type = app_state.get("chart_type", "directory")
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label = "Indication" if chart_type == "indication" else "Directorate"
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title = f"{selected} \u2014 Trust Comparison"
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return hide, show, title
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else:
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return show, hide, ""
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# Dashboard chart rendering will be added in Task 10.8.
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# For now, register empty figure placeholders for the 6 chart IDs
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# so the dcc.Graph components don't error on load.
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_tc_chart_ids = [
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"tc-chart-market-share",
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"tc-chart-cost-waterfall",
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"tc-chart-dosing",
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"tc-chart-heatmap",
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"tc-chart-duration",
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"tc-chart-cost-effectiveness",
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]
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for chart_id in _tc_chart_ids:
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@app.callback(
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Output(chart_id, "figure"),
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Input("app-state", "data"),
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prevent_initial_call=True,
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)
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def _placeholder_chart(app_state, _cid=chart_id):
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"""Placeholder — returns empty figure until Task 10.8 implements real charts."""
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selected = (app_state or {}).get("selected_comparison_directorate")
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if not selected:
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return no_update
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fig = go.Figure()
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fig.update_layout(
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template="plotly_white",
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margin=dict(l=20, r=20, t=30, b=20),
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height=300,
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annotations=[
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dict(
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text="Chart will be implemented in Task 10.8",
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xref="paper", yref="paper",
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x=0.5, y=0.5, showarrow=False,
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font=dict(size=14, color="#999"),
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)
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],
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)
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return fig
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