Allow to add handlers for prompts #230
Description
Is your feature request related to a problem? Please describe.
Allow users to add hooks to prompts.
Describe the solution you'd like
For example, adding the support of doing the following:
using System.Collections.Generic;
using System.Linq;
using Spectre.Console;
void Update(IReadOnlyList<int> items, PromptAction action)
{
var bits = items.Aggregate(seed: 0, (a, b) => a | b);
AnsiConsole.Cursor.SetPosition(20, 1);
AnsiConsole.WriteLine($"Bits set: {bits:X8}");
}
var prompt = new MultiSelectionPrompt<int>()
.Handler((list, action) => Update(list));
internal enum PromptAction : byte
{
ItemSelected,
ItemDeselected,
// ..
}Why is this needed?
I think adding hooks would be helpful to inform the user about what is set.
This would also add the ability to make something like the following:
using System;
using System.Collections.Generic;
using Spectre.Console;
void Update(IReadOnlyList<Item> items, PromptAction action)
{
if (action is PromptAction.ItemSelected)
{
AnsiConsole.Cursor.SetPosition(20, 1);
AnsiConsole.WriteLine(items[items.Count - 1].Description);
}
}
var prompt = new SelectionPrompt<int>()
.Handler((list, action) => Update(list));
internal enum PromptAction : byte
{
ItemSelected,
ItemDeselected,
// ..
}
internal class Item
{
public Item(string name, string description)
{
Name = name ?? throw new ArgumentNullException(nameof(name));
Description = description ?? throw new ArgumentNullException(nameof(description));
}
public string Name { get; }
public string Description { get; }
}Describe alternatives you've considered
---
Additional context
I would be able to grab this if this is considered a feature.
Please upvote 👍 this issue if you are interested in it.