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# Conflicts: # app/javascript/controllers/sankey_chart_controller.js # app/javascript/controllers/time_series_chart_controller.js
26 lines
1.4 KiB
JavaScript
26 lines
1.4 KiB
JavaScript
// Single source of truth for the cursor-following tooltip used by the chart
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// controllers (time-series, sankey, and goal-projection once it lands from the
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// goals work). Keeping the visual contract here stops the bg / text / border /
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// privacy-sensitive classes from drifting apart across the controllers, the way
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// they had before (time-series was missing `text-primary` and `z-50`).
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//
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// This is the VISUAL contract only. Callers append their own behavioural
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// classes (initial `opacity-0`, `top-0`, …) or set them via inline styles,
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// because how each chart shows/hides and positions its tooltip differs.
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//
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// Not to be confused with DS::Tooltip — that is the info-icon hint primitive
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// (bg-inverse, aria-describedby, anchored to a static trigger). This is a
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// data-card surface created and updated inside D3 handler code.
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export const CHART_TOOLTIP_CLASSES =
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"bg-container text-primary text-sm font-sans absolute p-3 rounded-xl shadow-lg shadow-border-xs pointer-events-none z-50 privacy-sensitive";
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// Convenience factory for the raw-DOM idiom (no d3.select). Creates a hidden
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// tooltip div carrying the shared contract and appends it to `parent`.
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export function createChartTooltip(parent) {
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const tooltip = document.createElement("div");
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tooltip.className = CHART_TOOLTIP_CLASSES;
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tooltip.style.display = "none";
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parent.appendChild(tooltip);
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return tooltip;
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}
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