class

Opal::UI::DockContainer

Inherits Opal::UI::Control < Opal::UI::InputHookable < Opal::UI::Element < Opal::UI::Themable < Reference < Object

Modern declarative Dock layout container inspired by Python Textual's Docking system. Arranges child elements docked to Top, Bottom, Left, Right, and Center, computing bounds and remaining canvas automatically.

Constructors

new(items : Array(DockItem) = [] of DockItem)

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Instance methods

children

Returns child elements for hierarchical tree traversal and DOM querying

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compute_layout(x : Int32, y : Int32, width : Int32, height : Int32) : Array(Tuple(DockItem, Int32, Int32, Int32, Int32))

Computes geometry rectangles for each child given total width and height

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dock(element : Element, edge : DockEdge | Symbol, size : Int32 | Nil = nil) : self

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dock_bottom(element : Element, height : Int32 | Nil = nil) : self

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dock_center(element : Element) : self

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dock_left(element : Element, width : Int32 | Nil = nil) : self

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dock_right(element : Element, width : Int32 | Nil = nil) : self

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dock_top(element : Element, height : Int32 | Nil = nil) : self

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handle_key(event : Terminal::KeyEvent) : Bool

Default key event handler. Override in subclasses if not using @default_input_proc.

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handle_mouse(event : Terminal::MouseEvent) : Bool

Default mouse event handler. Override in subclasses if not using @default_input_proc.

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items

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preferred_size(available_w : Int32, available_h : Int32) : Tuple(Int32, Int32)

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render(buffer : Buffer, x : Int32, y : Int32, width : Int32, height : Int32) : Nil

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