Fitness dashboard v1

assets/fitness/fitness.js

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+// Fitness dashboard range dropdowns: changing one reloads the page with that
+// chart's query parameter updated. Plain GET navigation — each range is a
+// distinct, bookmarkable view, so no postReplace/history handling is needed.
+document.addEventListener('change', function (e) {
+    var sel = e.target.closest('[data-fitness-range]');
+    if (!sel) return;
+    var url = new URL(window.location.href);
+    url.searchParams.set(sel.dataset.fitnessRange, sel.value);
+    window.location.href = url.toString();
+});

assets/fitness/main.html

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+{{define "fitnessChart"}}
+<section class="fitness-chart panel">
+    <div class="fitness-chart-header row space-between">
+        <span class="caption">{{.Title}}</span>
+        <select class="input fitness-range" data-fitness-range="{{.Param}}" aria-label="{{.Title}} time range">
+            {{range .Options}}<option value="{{.Value}}"{{if .Selected}} selected{{end}}>{{.Label}}</option>{{end}}
+        </select>
+    </div>
+    {{if .Empty}}
+    <p class="fitness-empty is-empty">No data in this range.</p>
+    {{else}}
+    <svg class="fitness-svg" viewBox="0 0 {{.ViewW}} {{.ViewH}}" role="img" aria-label="{{.Title}}">
+        {{range .YTicks}}
+        <line class="chart-grid" x1="{{$.PlotX}}" y1="{{.Pos}}" x2="{{$.PlotR}}" y2="{{.Pos}}"/>
+        <text class="chart-label" x="{{$.YLabelX}}" y="{{.Pos}}" text-anchor="end" dominant-baseline="middle">{{.Label}}</text>
+        {{end}}
+        {{range .XTicks}}
+        <text class="chart-label" x="{{.Pos}}" y="{{$.XLabelY}}" text-anchor="{{.Anchor}}">{{.Label}}</text>
+        {{end}}
+        <line class="chart-axis" x1="{{.PlotX}}" y1="{{.PlotY}}" x2="{{.PlotX}}" y2="{{.PlotB}}"/>
+        <line class="chart-axis" x1="{{.PlotX}}" y1="{{.PlotB}}" x2="{{.PlotR}}" y2="{{.PlotB}}"/>
+        {{range .Bars}}
+        <g class="chart-bar-group">
+            <title>{{.Title}}</title>
+            <rect class="chart-bar" x="{{.X}}" y="{{.Y}}" width="{{.W}}" height="{{.H}}"/>
+            <line class="chart-net" x1="{{.X}}" y1="{{.NetY}}" x2="{{.X2}}" y2="{{.NetY}}"/>
+        </g>
+        {{end}}
+        {{range .Lines}}
+        <polyline class="chart-line" points="{{.}}"/>
+        {{end}}
+        {{range .Dots}}
+        <circle class="chart-dot" cx="{{.X}}" cy="{{.Y}}" r="2.5"><title>{{.Title}}</title></circle>
+        {{end}}
+        {{if .Goal}}
+        <line class="chart-goal" x1="{{.PlotX}}" y1="{{.Goal.Y}}" x2="{{.PlotR}}" y2="{{.Goal.Y}}"/>
+        <text class="chart-goal-label" x="{{.PlotR}}" y="{{.Goal.LabelY}}" text-anchor="end">{{.Goal.Label}}</text>
+        {{end}}
+    </svg>
+    {{end}}
+</section>
+{{end}}
+<div class="fitness-dash col">
+{{if .Notice}}
+    <p class="muted">{{.Notice}}</p>
+{{else}}
+    {{range .Charts}}{{template "fitnessChart" .}}{{end}}
+{{end}}
+</div>
+<script src="/_/fitness/fitness.js"></script>