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Keep the roadmap's horizontal scrollbar on the chart frame's bottom edge #901

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Merged
github-actions merged 1 commit into from
Sep 30, 2026
Merged

Keep the roadmap's horizontal scrollbar on the chart frame's bottom edge #901

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11 changes: 11 additions & 0 deletions src/App/Backlog.Desktop.UI/wwwroot/app.css
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Original file line number Diff line number Diff line change
Expand Up @@ -5207,11 +5207,22 @@ h1, h2, h3 {
/* The scrollbar goes where the rows are. A plan that fits shows none — `auto`, not
`scroll`. */
.roadmap-band__timeline .roadmap-timeline__frame {
align-items: flex-start;
min-height: 0;
overflow-y: auto;
scrollbar-width: thin;
}

/* The two columns are each the frame's height or their rows', whichever is taller.
Stretched, a flex line in a frame of fixed height is that height: the track clipped
its last lanes, and scrolled down its horizontal scrollbar sat mid-chart over them.
The frame's height as a floor keeps that scrollbar on the frame's bottom edge when
the plan is short. */
.roadmap-band__timeline .roadmap-timeline__sidebar,
.roadmap-band__timeline .roadmap-timeline__scroll {
min-height: 100%;
}

/* The chart's heading row, once it is carrying the view's own heading: the heading
and its add controls at one end, the filters at the other. */
.roadmap-band__timeline .roadmap-timeline__header {
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21 changes: 21 additions & 0 deletions tests/Backlog.Desktop.UI.UnitTests/DevbookStackLayoutTests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -290,6 +290,27 @@ public void The_roadmap_fills_its_surface_and_scrolls_inside_the_chart()
Assert.Contains("overflow-y: auto;", frame, StringComparison.Ordinal);
}

/// <summary>
/// The chart's two columns are each as tall as the frame or their own rows, whichever
/// is taller. Stretched, both were clamped to the frame's visible height: the track
/// clipped its last lanes, and scrolled down the horizontal scrollbar sat mid-chart
/// over blank lanes. With the frame's height as a minimum, a short plan still puts the
/// scrollbar on the frame's bottom edge.
/// </summary>
[Fact]
public void The_roadmap_columns_grow_with_their_rows_and_keep_the_scrollbar_at_the_bottom()
{
var css = NormalizeLineEndings(File.ReadAllText(FindAppCss()));

var frame = RuleBody(css, ".roadmap-band__timeline .roadmap-timeline__frame {");
Assert.Contains("align-items: flex-start;", frame, StringComparison.Ordinal);

var columns = RuleBody(
css,
".roadmap-band__timeline .roadmap-timeline__sidebar,\n.roadmap-band__timeline .roadmap-timeline__scroll {");
Assert.Contains("min-height: 100%;", columns, StringComparison.Ordinal);
}

/// <summary>
/// The unplanned work is a column beside the chart while there is any, scrolling on
/// its own so neither can push the other off the surface — and under the chart,
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