Merge pull request 'features/rewrite/dropdown' (#14) from features/rewrite/dropdown into features/rewrite/main

Reviewed-on: #14

Requires property comments and style fine-tuning.

nuget.config

@@ -10,6 +10,7 @@
     </packageRestore>
     <packageSources>
         <add key="NuGet official package source" value="https://api.nuget.org/v3/index.json" />
+        <add key="Tom PIT Connected GIT" value="https://git.tompit.com/api/packages/Tom-PIT/nuget/index.json" />
     </packageSources>
     <disabledPackageSources />
 </configuration>

src/Connected.Components.Showcase.Runner/Connected.Components.Showcase.Runner.csproj

@@ -7,8 +7,8 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="7.0.*" />
-    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="7.0.*" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="7.0.*-*" />
+    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="7.0.*-*" PrivateAssets="all" />
   </ItemGroup>
 
   <ItemGroup>
@@ -22,9 +22,4 @@
 		<Watch Remove="..\..\src\**\bin\**" />
 	</ItemGroup>
 
-
-	<ItemGroup>
-	  <Watch Remove="Program.cs" />
-	</ItemGroup>
-
 </Project>

src/Connected.Components.Showcase.Runner/Pages/DropdownDemo.razor

@@ -0,0 +1,18 @@
+@page "/demo/components/dropdown"
+
+@namespace Connected.Components.Showcase.Runner
+
+@using Connected.Components;
+
+<Dropdown Items=@Items ItemToKey=@((e) => e.Value.ToString()) @bind-SelectedItems="@SelectedItems" AllowMultiple=true>
+   <OptionTemplate>
+      @context.Name
+   </OptionTemplate>
+   <SelectedValueTemplate>
+      @context.Name
+   </SelectedValueTemplate>
+</Dropdown>
+
+<div>
+   @string.Join(", ", SelectedItems.Select(e=> e.Value))
+</div>

src/Connected.Components.Showcase.Runner/Pages/DropdownDemo.razor.cs

@@ -0,0 +1,29 @@
+using System.Collections.ObjectModel;
+
+namespace Connected.Components.Showcase.Runner;
+
+public partial class DropdownDemo
+{
+	private ObservableCollection<TestObject> SelectedItems { get; set; } = new();
+
+	private ObservableCollection<TestObject> Items { get; set; } = new ObservableCollection<TestObject>
+	{
+		new TestObject
+		{
+			Name= "Simple",
+			Value = 1
+		},
+		new TestObject
+		{
+			Name = "Simpler",
+			Value = 2
+		}
+	};
+
+	public class TestObject
+	{
+		public string Name { get; set; }
+
+		public long Value { get; set; }
+	}
+}

src/Connected.Components.Showcase.Runner/wwwroot/index.html

@@ -6,7 +6,6 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Connected.Components.Showcase.Runner</title>
     <base href="/" />
-    <link href="css/app.css" rel="stylesheet" />
     <link href="https://fonts.googleapis.com/css?family=Roboto:300,400,500,700&display=swap" rel="stylesheet" />
     <link href="_content/Connected.Components/Connected.Components.min.css" rel="stylesheet" />
     <script src="_content/Connected.Components/Connected.Components.min.js"></script>

src/Connected.Components/Components/Dropdown.razor

@@ -0,0 +1,48 @@
+@typeparam T;
+@inherits Connected.Models.InputBase;
+
+<div class="@InputFieldClassList">
+   <select type="textarea" @onfocus="(()=> Open())" @onblur="(()=> Close())">
+      @if (SelectedItems.Any())
+      {
+         <option selected>
+            @foreach (var item in SelectedItems)
+            {
+               @SelectedValueTemplate?.Invoke(item)
+            }
+         </option>
+      }
+   </select>
+
+
+
+   <span class="highlight"></span><span class="bar"></span>
+   <label class="label-animated">@Label</label>
+   <div class="input-helper-text">@HelperText</div>
+   <div class="input-error-text">@ErrorText</div>
+   <span class="input-glyph-wraper">
+      <span class="input-glyph button">
+         <Glyph SVG="@Icons.Material.Outlined.Cancel" class="icon-root svg-icon" Click="_ => { SelectedItems.Clear(); Close(); }" />
+      </span>
+      <span class="input-glyph">
+         <Glyph SVG="@Icons.Material.Filled.ArrowDropDown" class="icon-root svg-icon icon-size-md" Click="()=> Toggle()" />
+      </span>
+      <span class="input-glyph error">
+         <Glyph SVG="@Icons.Material.Outlined.ErrorOutline" class="icon-root svg-icon" />
+      </span>
+   </span>
+
+   <TransitionAnimator TransitionDuration="5000" TransitionInClass="drop-down fade-in" TransitionOutClass="drop-down fade-out" Visible=@DropdownOpen>
+      <div class="backdrop d-sm-none">
+      </div>
+      <div class="dropdown-menu">
+         @foreach (var item in Items)
+         {
+            <div class="dropdown-item @(IsItemSelected(item)?"active":"")"
+              @onclick="(async () => await OptionSelected(item))">
+               @OptionTemplate?.Invoke(item)
+            </div>
+         }
+      </div>
+   </TransitionAnimator>
+</div>

src/Connected.Components/Components/Dropdown.razor.cs

@@ -0,0 +1,112 @@
+using Microsoft.AspNetCore.Components;
+using System.Collections.ObjectModel;
+using Connected.Models;
+using System.Collections.Immutable;
+
+namespace Connected.Components;
+
+public partial class Dropdown<T> : InputBase, IAsyncDisposable
+{
+	[Parameter, EditorRequired]
+	public ObservableCollection<T> Items { get; set; } = new ObservableCollection<T>();
+
+	[Parameter]
+	public RenderFragment<T>? OptionTemplate { get; set; }
+
+	[Parameter]
+	public RenderFragment<T>? SelectedValueTemplate { get; set; }
+
+	[Parameter, EditorRequired]
+	public Func<T, string> ItemToKey { get; set; } = default!;
+
+	[Parameter]
+	public ObservableCollection<T> SelectedItems { get; set; } = new();
+
+	[Parameter]
+	public EventCallback<ObservableCollection<T>> SelectedItemsChanged { get; set; }
+
+	[Parameter]
+	public bool AllowMultiple { get; set; }
+
+	private bool DropdownOpen { get; set; }
+
+	private bool IsItemSelected(T item)
+	{
+		return SelectedItems.Contains(item);
+	}
+
+	public void Open()
+	{
+		DropdownOpen = true;
+	}
+
+	public void Close()
+	{
+		DropdownOpen = false;
+	}
+
+	public void Toggle()
+	{
+		DropdownOpen = !DropdownOpen;
+	}
+
+	protected override void OnInitialized()
+	{
+		base.OnInitialized();
+		
+		OptionTemplate ??= (T item) => (builder) =>
+		{
+			builder.OpenElement(0, "div");
+			builder.SetKey(item);
+			builder.AddContent(1, item?.ToString());
+			builder.CloseElement();
+		};
+
+		SelectedValueTemplate ??= (T item) => (builder) =>
+		{
+			builder.OpenElement(0, "span");
+			builder.SetKey(item);
+			builder.AddContent(1, item?.ToString());
+			builder.CloseElement();
+		};
+	}
+	protected override void OnParametersSet()
+	{
+		base.OnParametersSet();
+
+		Items.CollectionChanged += CollectionChanged;
+		SelectedItems.CollectionChanged += CollectionChanged;
+	}
+
+	private void CollectionChanged(object? sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
+	{
+		if (sender == SelectedItems)
+			SelectedItemsChanged.InvokeAsync(SelectedItems);
+
+		StateHasChanged();
+	}
+
+	private async Task OptionSelected(T item)
+	{
+		if (AllowMultiple)
+		{
+			if (SelectedItems.Contains(item))
+			{
+				SelectedItems.Remove(item);
+				return;
+			}
+		}
+		else
+		{
+			SelectedItems.Clear();
+		}
+
+		SelectedItems.Add(item);
+	}
+
+	public async ValueTask DisposeAsync()
+	{
+		Items.CollectionChanged -= CollectionChanged;
+		SelectedItems.CollectionChanged -= CollectionChanged;
+	}
+}

src/Connected.Components/Components/TransitionAnimator.razor

@@ -0,0 +1,107 @@
+@using Connected.Utilities;
+
+<div class="@ClassList" @ontransitionend="TransitionEnd" @onanimationend="TransitionEnd">
+   @if (ContentVisible)
+   {
+      @ChildContent
+   }
+</div>
+
+<style>
+   .transition-container-component {
+      transition: all @(TransitionDuration)ms;
+   }
+</style>
+
+@code {
+   private bool _visible = false;
+
+   /// <summary>
+   /// The class to append to the container while content is visible and transitioning in
+   /// </summary>
+   [Parameter, EditorRequired]
+   public string? TransitionInClass { get; set; }
+
+   /// <summary>
+   /// The class to append to the container while content is transitioning out and hidden
+   /// </summary>
+   [Parameter, EditorRequired]
+   public string? TransitionOutClass { get; set; }
+
+   /// <summary>
+   /// The class to append to the container to control transitions
+   /// </summary>
+   [Parameter]
+   public string? TransitionContainerClass { get; set; } = "transition-container-component";
+
+   /// <summary>
+   /// Controls the visibility of the child content
+   /// </summary>
+   [Parameter, EditorRequired]
+   public bool Visible { get => _visible; set => StartTransition(value); }
+
+   /// <summary>
+   /// The content to show/hide
+   /// </summary>
+   [Parameter, EditorRequired]
+   public RenderFragment? ChildContent { get; set; }
+
+   /// <summary>
+   /// Indicates a transition has ended. Useful for visual cleanup.
+   /// </summary>
+   [Parameter]
+   public EventCallback TransitionEnded { get; set; }
+
+   /// <summary>
+   /// The duration of transitions in milliseconds.
+   /// </summary>
+   [Parameter]
+   public int TransitionDuration { get; set; } = 2000;
+
+   private bool TransitioningIn { get; set; }
+   
+   private bool TransitioningOut { get; set; }
+
+   private bool ContentVisible { get; set; }
+
+   private CssBuilder ClassList
+   {
+      get
+      {
+         return new CssBuilder(TransitionContainerClass)
+         .AddClass(TransitionInClass, TransitioningIn)
+         .AddClass(TransitionOutClass, TransitioningOut);
+      }
+   }
+
+   private void StartTransition(bool visible)
+   {
+      if (visible == Visible)
+         return;
+
+      _visible = visible;
+
+      TransitioningIn = visible;
+
+      TransitioningOut = !visible;
+
+      if (visible)
+         ContentVisible = true;
+
+      StateHasChanged();
+   }
+
+   private void TransitionEnd()
+   {
+      ContentVisible = Visible;
+      StateHasChanged();
+
+      TransitionEnded.InvokeAsync();
+   }
+
+   protected override void OnInitialized()
+   {
+      base.OnInitialized();
+      ContentVisible = Visible;
+   }
+}

src/Connected.Components/Connected.Components.csproj

@@ -28,7 +28,7 @@
 	</ItemGroup>
 
 	<ItemGroup>
-		<PackageReference Include="Microsoft.AspNetCore.Components" Version="7.0.3" />
+		<PackageReference Include="Microsoft.AspNetCore.Components" Version="7.0.*-*" />
 		<PackageReference Include="Microsoft.AspNetCore.Components.Web" Version="7.0.*-*" />
 	</ItemGroup>
 

src/Connected.Components/Events/EventHandlers.cs

@@ -0,0 +1,14 @@
+using Microsoft.AspNetCore.Components;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Connected.Components;
+
+[EventHandler("ontransitionend", typeof(EventArgs), enableStopPropagation: true, enablePreventDefault: false)]
+[EventHandler("onanimationend", typeof(EventArgs), enableStopPropagation: true, enablePreventDefault: false)]
+public static class EventHandlers
+{
+}

src/Connected.Components/Styles/components/_dropdown.scss

@@ -1,22 +1,18 @@
 @use "../globals/" as *;
 @use "../util/" as *;
 
-
-
-
 .drop-down {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    min-width: 80%;
+   height: auto;
+   max-height: max-content;
    width: 80%;
-  height: 0;
-  max-height: 0;
+   opacity: 0;
    display: flex;
    flex-direction: column;
-  opacity: 0;
-  pointer-events: none;
    z-index: $dropdown-zindex;
    list-style: none;
    background-color: #fff;
@@ -25,6 +21,35 @@
    transition: all 0.3s ease-in-out;
 }
 
+.drop-down.fade-in {
+   animation: fade-in 0.3s ease-in-out forwards;
+}
+
+.drop-down.fade-out {
+   animation: fade-out 0.3s ease-in-out forwards;
+}
+
+@keyframes fade-in {
+   0% {
+      opacity: 0;
+   }
+
+   100% {
+      opacity: 1;
+   }
+}
+
+@keyframes fade-out {
+   0% {
+      opacity: 1;
+   }
+
+   100% {
+      opacity: 0;
+   }
+}
+
+
 @include breakpoint(sm) {
   .drop-down {
     position: absolute;
@@ -39,10 +64,9 @@
 }
 
 .backdrop {
-  display: none;
-  opacity: 0;
    z-index: $backdrop-zindex;
    position: fixed;
+   display: block;
    top: 0;
    right: 0;
    bottom: 0;

src/Connected.Components/Styles/components/_inputs.scss

@@ -1,10 +1,6 @@
 @use "../util" as *;
 @use "../globals" as *;
 
-
-
-
-
 $trans-time: 300ms;
 $width: 100%;
 
@@ -199,29 +195,8 @@ form{
     display:none
 }
 
-/*SELECT*/
-
-
-select {
-    appearance: none;
-
-    &:focus-within ~ .drop-down {
-        height: auto;
-        max-height: max-content;
-        opacity: 1;
-        pointer-events: initial;
-
-    }
-    &:focus-within ~ .backdrop {
-        opacity: 1;
-        display: block;
-    }
-}
-
-
 /*form group-alt*/
 
-
   .form-group-alt {
     --height: 2.5rem;