ResizablePaneGroup

Family: Shells & Overlays
Namespace: Tessera.Controls

Use ResizablePaneGroup when this interaction is the best match for your screen workflow.

When to use

• You need a ResizablePaneGroup-style interaction inside the shells & overlays lane.
• A titled widget surface improves scanability in dense shells.
• You want explicit user-driven events routed into app state updates.

Minimal usage

csharp.cs

using Tessera.Controls;
using Tessera.Layout;

var widget = new ResizablePaneGroup
{
    Title = "ResizablePaneGroup"
};

return Screen.Build(window => window.Body(body => body.Center(widget, width: 44, height: 9)));

Common pitfalls

• Do not choose ResizablePaneGroup by name only; validate it against the target workflow.
• Keep this control scoped to the shells & overlays concern; avoid cross-layer state coupling.
• Handle control events by posting/processing messages; avoid hidden mutation in render paths.
• Set focused/normal styles intentionally so keyboard focus remains obvious.
• Keep disabled state explicit and reversible so users understand why actions are blocked.

Public properties

Property	Type
Border	BorderStyle
BorderStyleText	TesseraStyle
DisabledStyleText	TesseraStyle
DividerGlyph	char
DividerStyleText	TesseraStyle
FocusedBorderStyleText	TesseraStyle
FocusedDividerStyleText	TesseraStyle
FocusedTitleStyleText	TesseraStyle
FocusMarker	string
IsDisabled	bool
IsFocused	bool
IsReadOnly	bool
Padding	Thickness
PaneStyleText	TesseraStyle
SelectedPaneStyleText	TesseraStyle
ShowDividers	bool
ShowFocusMarker	bool
Title	string
TitleStyleText	TesseraStyle

Public events

Event	Type
SelectionChanged	EventHandler<ListSelectionChangedEventArgs<PaneSpec>>?

Related docs

• Widget Reference
• Widgets Overview
• Public API Inventory