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Add support for selecting prompt items

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Closes #447
This commit is contained in:
Patrik Svensson
2021-06-27 21:59:58 +02:00
committed by Phil Scott
parent fa553fd72e
commit 865552c3f2
8 changed files with 165 additions and 47 deletions
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32
src/Spectre.Console/Widgets/Prompt/MultiSelectionPrompt.cs
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@ -13,8 +13,6 @@ namespace Spectre.Console
public sealed class MultiSelectionPrompt<T> : IPrompt<List<T>>, IListPromptStrategy<T>
where T : notnull
{
private readonly ListPromptTree<T> _tree;
/// <summary>
/// Gets or sets the title.
/// </summary>
@ -59,12 +57,18 @@ namespace Spectre.Console
/// </summary>
public SelectionMode Mode { get; set; } = SelectionMode.Leaf;
internal ListPromptTree<T> Tree { get; }
/// <summary>
/// Initializes a new instance of the <see cref="MultiSelectionPrompt{T}"/> class.
/// </summary>
public MultiSelectionPrompt()
/// <param name="comparer">
/// The <see cref="IEqualityComparer{T}"/> implementation to use when comparing items,
/// or <c>null</c> to use the default <see cref="IEqualityComparer{T}"/> for the type of the item.
/// </param>
public MultiSelectionPrompt(IEqualityComparer<T>? comparer = null)
{
_tree = new ListPromptTree<T>();
Tree = new ListPromptTree<T>(comparer ?? EqualityComparer<T>.Default);
}
/// <summary>
@ -75,7 +79,7 @@ namespace Spectre.Console
public IMultiSelectionItem<T> AddChoice(T item)
{
var node = new ListPromptItem<T>(item);
_tree.Add(node);
Tree.Add(node);
return node;
}
@ -84,18 +88,18 @@ namespace Spectre.Console
{
// Create the list prompt
var prompt = new ListPrompt<T>(console, this);
var result = prompt.Show(_tree, PageSize);
var result = prompt.Show(Tree, PageSize);
if (Mode == SelectionMode.Leaf)
{
return result.Items
.Where(x => x.Selected && x.Children.Count == 0)
.Where(x => x.IsSelected && x.Children.Count == 0)
.Select(x => x.Data)
.ToList();
}
return result.Items
.Where(x => x.Selected)
.Where(x => x.IsSelected)
.Select(x => x.Data)
.ToList();
}
@ -105,7 +109,7 @@ namespace Spectre.Console
{
if (key.Key == ConsoleKey.Enter)
{
if (Required && state.Items.None(x => x.Selected))
if (Required && state.Items.None(x => x.IsSelected))
{
// Selection not permitted
return ListPromptInputResult.None;
@ -118,14 +122,14 @@ namespace Spectre.Console
if (key.Key == ConsoleKey.Spacebar)
{
var current = state.Items[state.Index];
var select = !current.Selected;
var select = !current.IsSelected;
if (Mode == SelectionMode.Leaf)
{
// Select the node and all it's children
foreach (var item in current.Traverse(includeSelf: true))
{
item.Selected = select;
item.IsSelected = select;
}
// Visit every parent and evaluate if it's selection
@ -133,13 +137,13 @@ namespace Spectre.Console
var parent = current.Parent;
while (parent != null)
{
parent.Selected = parent.Traverse(includeSelf: false).All(x => x.Selected);
parent.IsSelected = parent.Traverse(includeSelf: false).All(x => x.IsSelected);
parent = parent.Parent;
}
}
else
{
current.Selected = !current.Selected;
current.IsSelected = !current.IsSelected;
}
// Refresh the list
@ -209,7 +213,7 @@ namespace Spectre.Console
text = text.RemoveMarkup();
}
var checkbox = item.Node.Selected
var checkbox = item.Node.IsSelected
? (item.Node.IsGroup && Mode == SelectionMode.Leaf
? ListPromptConstants.GroupSelectedCheckbox : ListPromptConstants.SelectedCheckbox)
: ListPromptConstants.Checkbox;