Class SelectionManager

Namespace

SharpConsoleUI.Core

Assembly

SharpConsoleUI.dll

Manages text selection within a single Window. This is the single source of truth for which ISelectableControl owns the active selection. Only one control may have a selection at a time: SetActiveSelection(ISelectableControl) clears the previously active control's selection before adopting the new one. Mirrors the per-window FocusManager.

public class SelectionManager

Inheritance

object

SelectionManager

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Extension Methods

BindingExtensions.BindTwoWay<TBuilder, TControl, TSource, TValue>(TBuilder, TSource, Expression<Func<TSource, TValue>>, Expression<Func<TControl, TValue>>)

BindingExtensions.BindTwoWay<TBuilder, TControl, TSource, TSrc, TTgt>(TBuilder, TSource, Expression<Func<TSource, TSrc>>, Expression<Func<TControl, TTgt>>, Func<TSrc, TTgt>, Func<TTgt, TSrc>)

BindingExtensions.Bind<TBuilder, TControl, TSource, TValue>(TBuilder, TSource, Expression<Func<TSource, TValue>>, Expression<Func<TControl, TValue>>)

BindingExtensions.Bind<TBuilder, TControl, TSource, TSrc, TTgt>(TBuilder, TSource, Expression<Func<TSource, TSrc>>, Expression<Func<TControl, TTgt>>, Func<TSrc, TTgt>)

Remarks

Re-entrancy: a control's ClearSelection() must NOT call back into SetActiveSelection(ISelectableControl). It is only expected to reset the control's own state and invalidate.

Constructors

SelectionManager(Window)

Initializes a new SelectionManager for the given window.

public SelectionManager(Window window)

Parameters

window Window

Properties

ActiveSelection

Gets the control that currently owns the active selection, or null.

public ISelectableControl? ActiveSelection { get; }

Property Value

ISelectableControl

HasSelection

Gets whether any control in the window currently has a non-empty selection.

public bool HasSelection { get; }

Property Value

bool

Methods

ClearSelection()

Clears the active selection, if any.

public void ClearSelection()

GetSelectedText()

Gets the active selection's plain text, or null if nothing is selected.

public string? GetSelectedText()

Returns

string

SetActiveSelection(ISelectableControl)

Makes control the owner of the active selection. If a different control previously owned the selection, its selection is cleared first (single-selection invariant). Controls call this when they begin or extend a selection.

public void SetActiveSelection(ISelectableControl control)

Parameters

control ISelectableControl

Events

SelectionChanged

Fired whenever the active selection changes (adopted, updated, or cleared).

public event EventHandler<SelectionChangedEventArgs>? SelectionChanged

Event Type

EventHandler<SelectionChangedEventArgs>