category management

2022-03-07 17:34:09 +08:00
parent 49e4e46cdb
commit 46464e19dc
131 changed files with 3992 additions and 189 deletions
--- a/Billing.Shared/Views/CategorySelectPage.xaml.cs
+++ b/Billing.Shared/Views/CategorySelectPage.xaml.cs
@ -0,0 +1,120 @@
+using Billing.Languages;
+using Billing.Models;
+using Billing.Themes;
+using Billing.UI;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Xamarin.Forms;
+
+namespace Billing.Views
+{
+    public partial class CategorySelectPage : BillingPage
+    {
+        private static readonly BindableProperty TopCategoriesProperty = BindableProperty.Create(nameof(TopCategories), typeof(List<CategoryGrouping>), typeof(CategorySelectPage));
+        private static readonly BindableProperty SubCategoriesProperty = BindableProperty.Create(nameof(SubCategories), typeof(List<UICategory>), typeof(CategorySelectPage));
+
+        public List<CategoryGrouping> TopCategories
+        {
+            get => (List<CategoryGrouping>)GetValue(TopCategoriesProperty);
+            set => SetValue(TopCategoriesProperty, value);
+        }
+        public List<UICategory> SubCategories
+        {
+            get => (List<UICategory>)GetValue(SubCategoriesProperty);
+            set => SetValue(SubCategoriesProperty, value);
+        }
+
+        public Command TapTopCategory { get; }
+        public Command TapSubCategory { get; }
+
+        public event EventHandler<UICategory> CategoryTapped;
+
+        private readonly int categoryId;
+        private readonly Color defaultColor;
+
+        public CategorySelectPage(int id)
+        {
+            categoryId = id;
+            defaultColor = (Color)Application.Current.Resources[BaseTheme.PrimaryColor];
+            TapTopCategory = new Command(OnTopCategoryTapped);
+            TapSubCategory = new Command(OnSubCategoryTapped);
+
+            TopCategories = new List<CategoryGrouping>
+            {
+                new(Resource.Spending, App.Categories.Where(c => c.Type == CategoryType.Spending && c.ParentId == null).Select(c => WrapCategory(c))),
+                new(Resource.Income, App.Categories.Where(c => c.Type == CategoryType.Income && c.ParentId == null).Select(c => WrapCategory(c)))
+            };
+
+            UICategory cat;
+            var category = App.Categories.FirstOrDefault(c => c.Id == categoryId);
+            if (category == null)
+            {
+                cat = TopCategories.Where(g => g.Count > 0).Select(g => g.First()).FirstOrDefault();
+            }
+            else if (category.ParentId == null)
+            {
+                cat = TopCategories.SelectMany(g => g).FirstOrDefault(c => c.Category == category);
+            }
+            else
+            {
+                cat = TopCategories.SelectMany(g => g).FirstOrDefault(c => c.Category.Id == category.ParentId);
+            }
+            OnTopCategoryTapped(cat);
+
+            InitializeComponent();
+        }
+
+        private UICategory WrapCategory(Category c)
+        {
+            return new UICategory(c)
+            {
+                IsChecked = c.Id == categoryId,
+                Icon = c.Icon,
+                Name = c.Name,
+                TintColor = c.TintColor == Color.Transparent || c.TintColor == default ? defaultColor : c.TintColor
+            };
+        }
+
+        private async void OnTopCategoryTapped(object o)
+        {
+            if (Tap.IsBusy)
+            {
+                return;
+            }
+            using (Tap.Start())
+            {
+                if (o is UICategory category)
+                {
+                    var many = TopCategories.SelectMany(g => g);
+                    foreach (var m in many)
+                    {
+                        m.IsChecked = m == category;
+                    }
+                    SubCategories = App.Categories.Where(c => c.ParentId == category.Category.Id).Select(c => WrapCategory(c)).ToList();
+                    if (SubCategories.Count == 0)
+                    {
+                        CategoryTapped?.Invoke(this, category);
+                        await Navigation.PopAsync();
+                    }
+                }
+            }
+        }
+
+        private async void OnSubCategoryTapped(object o)
+        {
+            if (Tap.IsBusy)
+            {
+                return;
+            }
+            using (Tap.Start())
+            {
+                if (o is UICategory category)
+                {
+                    CategoryTapped?.Invoke(this, category);
+                    await Navigation.PopAsync();
+                }
+            }
+        }
+    }
+}