From 5c4e100b16dd59278345d9377d164dcd5ed8cf10 Mon Sep 17 00:00:00 2001
From: Yan Maniez <yanmaniez@hotmail.com>
Date: Thu, 11 Apr 2019 02:34:37 +0200
Subject: [PATCH] Binding picker

---
 .../AideDeJeu/ViewModels/PickerViewModel.cs   |  6 +-
 .../Views/PlayerCharacterEditorPage.xaml      |  4 +-
 .../AideDeJeu/Views/StringPickerView.xaml     | 34 +++++----
 .../AideDeJeu/Views/StringPickerView.xaml.cs  | 73 ++++++++++++++++++-
 4 files changed, 95 insertions(+), 22 deletions(-)

diff --git a/AideDeJeu/AideDeJeu/ViewModels/PickerViewModel.cs b/AideDeJeu/AideDeJeu/ViewModels/PickerViewModel.cs
index 2388ebe1..d6a11718 100644
--- a/AideDeJeu/AideDeJeu/ViewModels/PickerViewModel.cs
+++ b/AideDeJeu/AideDeJeu/ViewModels/PickerViewModel.cs
@@ -8,7 +8,7 @@ namespace AideDeJeu.ViewModels
     public class PickerViewModel<T> : BaseViewModel where T:class
     {
         private string _Title = null;
-        public string Title
+        public new string Title
         {
             get
             {
@@ -20,8 +20,8 @@ namespace AideDeJeu.ViewModels
             }
         }
 
-        private List<T> _Items = null;
-        public List<T> Items
+        private System.Collections.IEnumerable _Items = null;
+        public System.Collections.IEnumerable Items
         {
             get
             {
diff --git a/AideDeJeu/AideDeJeu/Views/PlayerCharacterEditorPage.xaml b/AideDeJeu/AideDeJeu/Views/PlayerCharacterEditorPage.xaml
index 5af6688b..a926570f 100644
--- a/AideDeJeu/AideDeJeu/Views/PlayerCharacterEditorPage.xaml
+++ b/AideDeJeu/AideDeJeu/Views/PlayerCharacterEditorPage.xaml
@@ -74,7 +74,9 @@
 
 
 
-                <views:StringPickerView />
+                <!--<views:StringPickerView Title="Trait de personnalité" IsVisible="{Binding PersonalityTraits.IsSuccessfullyCompleted}" ItemsSource="{Binding PersonalityTraits.Result}" />-->
+                <views:StringPickerView BindingContext="{Binding}" Title="Trait de personnalité" IsVisible="{Binding PersonalityIdeals.IsSuccessfullyCompleted}" ItemsSource="{Binding PersonalityIdeals.Result}" />
+                <!--SelectedItem="{Binding SelectedPlayerCharacter.PersonalityTrait, Mode=TwoWay}"-->
 
                 <Button Visual="Material" IsVisible="{Binding PersonalityIdeals.IsSuccessfullyCompleted}" Text="Idéal" Command="{Binding PersonalityIdealPickerCommand}" CommandParameter="{Binding PersonalityIdeals.Result}" />
                 <mdview:MarkdownView Theme="{StaticResource MonsterMarkdownTheme}" IsVisible="{Binding PersonalityIdeals.IsSuccessfullyCompleted}" HorizontalOptions="FillAndExpand" Markdown="{Binding SelectedPlayerCharacter.PersonalityIdeal}" />
diff --git a/AideDeJeu/AideDeJeu/Views/StringPickerView.xaml b/AideDeJeu/AideDeJeu/Views/StringPickerView.xaml
index 77123648..4ea26072 100644
--- a/AideDeJeu/AideDeJeu/Views/StringPickerView.xaml
+++ b/AideDeJeu/AideDeJeu/Views/StringPickerView.xaml
@@ -1,23 +1,27 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<ContentView xmlns="http://xamarin.com/schemas/2014/forms" 
+<StackLayout xmlns="http://xamarin.com/schemas/2014/forms" 
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
         xmlns:tools="clr-namespace:AideDeJeu.Tools"
         xmlns:mdview="clr-namespace:Xam.Forms.Markdown"
-             x:Class="AideDeJeu.Views.StringPickerView">
-    <ContentView.Resources>
+             x:Class="AideDeJeu.Views.StringPickerView"
+             x:Name="this">
+    <StackLayout.Resources>
         <ResourceDictionary>
             <tools:MonsterMarkdownTheme x:Key="MonsterMarkdownTheme" />
             <tools:NullToFalseConverter x:Key="NullToFalseConverter" />
         </ResourceDictionary>
-    </ContentView.Resources>
-    <ContentView.Content>
-        <StackLayout IsVisible="{Binding PersonalityTraits.IsSuccessfullyCompleted}">
-            <mdview:MarkdownView Theme="{StaticResource MonsterMarkdownTheme}" Markdown="## [Trait de personnalité](#)" IsEnabled="False" />
-            <mdview:MarkdownView Theme="{StaticResource MonsterMarkdownTheme}" Markdown="{Binding SelectedPlayerCharacter.PersonalityTrait}" />
-            <StackLayout.GestureRecognizers>
-                <ClickGestureRecognizer Command="{Binding PersonalityTraitPickerCommand}" CommandParameter="{Binding PersonalityTraits.Result}" />
-                <TapGestureRecognizer Command="{Binding PersonalityTraitPickerCommand}" CommandParameter="{Binding PersonalityTraits.Result}" />
-            </StackLayout.GestureRecognizers>
-        </StackLayout>
-    </ContentView.Content>
-</ContentView>
\ No newline at end of file
+    </StackLayout.Resources>
+    <mdview:MarkdownView Theme="{StaticResource MonsterMarkdownTheme}" Markdown="{Binding Title, Source={x:Reference this}, StringFormat='## [{0}](#)'}" IsEnabled="False" />
+    <!--<mdview:MarkdownView Theme="{StaticResource MonsterMarkdownTheme}" Markdown="{Binding SelectedItem, Source={x:Reference this}}" />-->
+    <StackLayout BindableLayout.ItemsSource="{Binding ItemsSource, Source={x:Reference this}}">
+        <BindableLayout.ItemTemplate>
+            <DataTemplate>
+                <Label Text="{Binding}" />
+            </DataTemplate>
+        </BindableLayout.ItemTemplate>
+    </StackLayout>
+    <StackLayout.GestureRecognizers>
+        <ClickGestureRecognizer Command="{Binding PickerCommand, Source={x:Reference this}}" CommandParameter="{Binding ItemsSource, Source={x:Reference this}}" />
+        <TapGestureRecognizer Command="{Binding PickerCommand, Source={x:Reference this}}" CommandParameter="{Binding ItemsSource, Source={x:Reference this}}" />
+    </StackLayout.GestureRecognizers>
+</StackLayout>
\ No newline at end of file
diff --git a/AideDeJeu/AideDeJeu/Views/StringPickerView.xaml.cs b/AideDeJeu/AideDeJeu/Views/StringPickerView.xaml.cs
index 5054304e..25d215de 100644
--- a/AideDeJeu/AideDeJeu/Views/StringPickerView.xaml.cs
+++ b/AideDeJeu/AideDeJeu/Views/StringPickerView.xaml.cs
@@ -1,20 +1,87 @@
-using System;
+using AideDeJeu.ViewModels;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
-
+using System.Windows.Input;
 using Xamarin.Forms;
 using Xamarin.Forms.Xaml;
 
 namespace AideDeJeu.Views
 {
     [XamlCompilation(XamlCompilationOptions.Compile)]
-    public partial class StringPickerView : ContentView
+    public partial class StringPickerView : StackLayout
     {
+        public MainViewModel Main
+        {
+            get
+            {
+                return DependencyService.Get<MainViewModel>();
+            }
+        }
         public StringPickerView()
         {
             InitializeComponent();
+            BindingContext = this;
+        }
+
+        public string Title
+        {
+            get { return (string)GetValue(TitleProperty); }
+            set { SetValue(TitleProperty, value); }
+        }
+        public static readonly BindableProperty TitleProperty = BindableProperty.Create(
+            nameof(Title), 
+            typeof(string), 
+            typeof(StringPickerView),
+            defaultValue: default(string));
+
+        public string SelectedItem
+        {
+            get { return (string)GetValue(SelectedItemProperty); }
+            set { SetValue(SelectedItemProperty, value); }
+        }
+        public static readonly BindableProperty SelectedItemProperty = BindableProperty.Create(
+            nameof(SelectedItem), 
+            typeof(string), 
+            typeof(StringPickerView), 
+            defaultValue: default(string), 
+            defaultBindingMode: BindingMode.TwoWay);
+
+        public System.Collections.IEnumerable ItemsSource
+        {
+            get { return (System.Collections.IEnumerable)GetValue(ItemsSourceProperty); }
+            set { SetValue(ItemsSourceProperty, value); }
+        }
+        //public static readonly BindableProperty ItemsSourceProperty = BindableProperty.Create(
+        //    nameof(ItemsSource), 
+        //    typeof(System.Collections.IList), 
+        //    typeof(StringPickerView),
+        //    defaultValue: new List<string>());
+        public static readonly BindableProperty ItemsSourceProperty =
+            BindableProperty.Create(
+                nameof(ItemsSource), 
+                typeof(System.Collections.IEnumerable), 
+                typeof(StringPickerView), 
+                default(System.Collections.IEnumerable));
+
+        public ICommand PickerCommand
+        {
+            get
+            {
+                return new Command<System.Collections.IList>(async (strings) => SelectedItem = await ExecuteStringPickerCommandAsync(strings));
+            }
+        }
+        private async Task<string> ExecuteStringPickerCommandAsync(System.Collections.IEnumerable strings)
+        {
+            var picker = new Views.StringPicker();
+            var vm = picker.ViewModel;
+            vm.Items = strings;
+            await Main.Navigator.Navigation.PushModalAsync(picker, true);
+            var result = await vm.PickValueAsync();
+            await Main.Navigator.Navigation.PopModalAsync(true);
+            return result;
         }
     }
 }
\ No newline at end of file