refactoring

BookAStar/BookAStar/Pages/Estimate/EditEstimatePage.xaml.cs

@@ -0,0 +1,96 @@
+using System;
+using Xamarin.Forms;
+
+namespace BookAStar.Pages
+{
+    using Data;
+    using Model.Workflow;
+    using ViewModels;
+    public partial class EditEstimatePage : ContentPage
+    {
+
+        public EditEstimatePage(EditEstimateViewModel model)
+        {
+            InitializeComponent();
+            BindingContext = model;
+        }
+
+        protected override void OnBindingContextChanged()
+        {
+            base.OnBindingContextChanged();
+            ((EditEstimateViewModel)BindingContext).PropertyChanged += EditEstimatePage_PropertyChanged;
+        }
+
+        private void EditEstimatePage_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
+        {
+            DataManager.Current.EstimationCache.SaveCollection();
+        }
+
+        protected override void OnSizeAllocated(double width, double height)
+        {
+             if (width > height)
+             {
+                 biAnVaLayout.Orientation = StackOrientation.Horizontal;
+             }
+             else
+             {
+                 biAnVaLayout.Orientation = StackOrientation.Vertical;
+             }
+            base.OnSizeAllocated(width, height);
+        }
+
+        protected void OnNewCommanLine(object sender, EventArgs e)
+        {
+            var com = new BillingLine() { Count = 1, UnitaryCost = 0.01m };
+            var bill = ((EditEstimateViewModel)BindingContext).Bill;
+            var lineView = new BillingLineViewModel(com)
+            { ValidateCommand = new Command(() => {
+                bill.Add(com);
+                bill.SaveCollection();
+            })};
+            App.NavigationService.NavigateTo<EditBillingLinePage>(
+                true,
+                new object[] { lineView } );
+        }
+        protected void OnEditLine(object sender, ItemTappedEventArgs e)
+        {
+            var line = (BillingLine)e.Item;
+            var bill = ((EditEstimateViewModel)BindingContext).Bill;
+            var lineView = new BillingLineViewModel(line)
+            {
+                ValidateCommand = new Command(() => {
+                    bill.SaveCollection();
+                })
+            };
+            lineView.PropertyChanged += LineView_PropertyChanged;
+            App.NavigationService.NavigateTo<EditBillingLinePage>(
+                true,
+                new object[] { lineView });
+        }
+
+        private void LineView_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
+        {
+            DataManager.Current.EstimationCache.SaveCollection();
+        }
+
+        protected void OnEstimateValidated(object sender, EventArgs e)
+        {
+            var evm = (EditEstimateViewModel)BindingContext;
+            if (evm.Data.Id == 0)
+            {
+                DataManager.Current.Estimates.Create(evm.Data);
+                // we have to manually add this item in our local collection,
+                // since we could prefer to update the whole collection
+                // from server, or whatever other scenario
+                DataManager.Current.Estimates.Add(evm.Data);
+            } else
+            {
+                DataManager.Current.Estimates.Update(evm.Data);
+            }
+            DataManager.Current.Estimates.SaveCollection();
+            DataManager.Current.EstimationCache.Remove(evm);
+            DataManager.Current.EstimationCache.SaveCollection();
+            Navigation.PopAsync();
+        }
+    }
+}