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mirror of https://github.com/chylex/Discord-History-Tracker.git synced 2024-12-22 23:42:50 +01:00
Discord-History-Tracker/app/Desktop/Dialogs/CheckBox/CheckBoxDialogModel.cs
2022-02-21 22:27:29 +01:00

71 lines
1.8 KiB
C#

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using DHT.Utils.Models;
namespace DHT.Desktop.Dialogs.CheckBox {
class CheckBoxDialogModel : BaseModel {
public string Title { get; init; } = "";
private IReadOnlyList<CheckBoxItem> items = Array.Empty<CheckBoxItem>();
public IReadOnlyList<CheckBoxItem> Items {
get => items;
protected set {
foreach (var item in items) {
item.PropertyChanged -= OnItemPropertyChanged;
}
items = value;
foreach (var item in items) {
item.PropertyChanged += OnItemPropertyChanged;
}
}
}
private bool pauseCheckEvents = false;
public bool AreAllSelected => Items.All(static item => item.Checked);
public bool AreNoneSelected => Items.All(static item => !item.Checked);
public void SelectAll() => SetAllChecked(true);
public void SelectNone() => SetAllChecked(false);
private void SetAllChecked(bool isChecked) {
pauseCheckEvents = true;
foreach (var item in Items) {
item.Checked = isChecked;
}
pauseCheckEvents = false;
UpdateBulkButtons();
}
private void UpdateBulkButtons() {
OnPropertyChanged(nameof(AreAllSelected));
OnPropertyChanged(nameof(AreNoneSelected));
}
private void OnItemPropertyChanged(object? sender, PropertyChangedEventArgs e) {
if (!pauseCheckEvents && e.PropertyName == nameof(CheckBoxItem.Checked)) {
UpdateBulkButtons();
}
}
}
sealed class CheckBoxDialogModel<T> : CheckBoxDialogModel {
public new IReadOnlyList<CheckBoxItem<T>> Items { get; }
public IEnumerable<CheckBoxItem<T>> SelectedItems => Items.Where(static item => item.Checked);
public CheckBoxDialogModel(IEnumerable<CheckBoxItem<T>> items) {
this.Items = new List<CheckBoxItem<T>>(items);
base.Items = this.Items;
}
}
}