Make features of entity picker configurable

examples/RapidCMS.Example.Shared/Collections/PersonCollection.cs

@@ -153,7 +153,9 @@ public static void AddPersonCollection(this ICmsConfig config)
                         // so this field will allow the user to select an entity that is one level deeper in the person-tree
                         section.AddField(x => x.FavouriteChildId)
                             .SetName("Favorite child")
-                            .SetType(EditorType.Select)
+                            .SetType(EditorType.EntityPicker)
+                            // use the Picker configuration class to configure EntityPicker and EntitiesPicker editors
+                            .SetConfiguration(new Picker(PageSize: 3))
                             .VisibleWhen((person, state) => state == EntityState.IsExisting)
                             .SetCollectionRelation<Person>("person", config =>
                             {

src/RapidCMS.Core/Models/Configuration/Picker.cs

@@ -0,0 +1,7 @@
+namespace RapidCMS.Core.Models.Configuration;
+
+public record Picker(
+    bool EnableSelectAll = false,
+    bool EnableUnselectAll = false,
+    bool EnableReset = false,
+    int PageSize = 25);

src/RapidCMS.Core/Providers/CollectionDataProvider.cs

@@ -12,7 +12,6 @@
 using RapidCMS.Core.Forms;
 using RapidCMS.Core.Models.Data;
 using RapidCMS.Core.Models.EventArgs.Mediators;
-using RapidCMS.Core.Models.Setup;
 
 namespace RapidCMS.Core.Providers;
 
@@ -156,13 +155,19 @@ public async Task<IReadOnlyList<IElement>> GetRelatedElementsAsync()
         return elements.Where(x => _relatedIds.Contains(x.Id)).ToList();
     }
 
-    public void AddElement(object id) => _relatedIds.Add(id);
+    public void AddElement(object id)
+    {
+        if (!_relatedIds.Contains(id))
+        {
+            _relatedIds.Add(id);
+        }
+    }
 
     public void RemoveElement(object id) => _relatedIds.Remove(id);
 
     public bool IsRelated(object id) => _relatedIds.Any(x => x.Equals(id));
 
-    public IReadOnlyList<object> GetCurrentRelatedElementIds() => _relatedIds;
+    public IReadOnlyList<object> GetCurrentRelatedElementIds() => _relatedIds.ToList();
 
     public Type GetRelatedEntityType() => _relatedEntityType ?? typeof(object);
 

src/RapidCMS.UI/Components/Editors/BasePicker.cs

@@ -6,11 +6,14 @@
 using Microsoft.AspNetCore.Components;
 using Microsoft.JSInterop;
 using RapidCMS.Core.Abstractions.Data;
+using RapidCMS.Core.Abstractions.UI;
+using RapidCMS.Core.Models.Configuration;
 using RapidCMS.Core.Models.Data;
+using RapidCMS.UI.Extensions;
 
 namespace RapidCMS.UI.Components.Editors;
 
-public abstract class BasePicker : BaseDataEditor
+public abstract class BasePicker : BaseDataEditor, IWantConfiguration<Picker>
 {
     protected string? _searchTerm;
     protected int _currentPage = 1;
@@ -25,15 +28,19 @@
 
     protected virtual bool IsMultiple { get; set; }
 
+    protected Picker Config { get; set; }
+
     [Inject]
     private IJSRuntime JsRuntime { get; set; } = null!;
 
     private IRelationDataCollection RelationDataCollection
-        => DataCollection as IRelationDataCollection 
+        => DataCollection as IRelationDataCollection
             ?? throw new InvalidOperationException("Incorrect DataCollection assigned to Entity/iesPicker");
 
     protected override async Task OnInitializedAsync()
     {
+        Config = await this.GetConfigAsync() ?? new();
+
         if (DataCollection != null)
         {
             DataCollection.OnDataChange += UpdateOptionsAsync;
@@ -83,14 +90,62 @@
         await UpdateOptionsAsync();
     }
 
+    protected async Task SelectAllAsync()
+    {
+        if (RelationDataCollection == null)
+        {
+            return;
+        }
+
+        var page = 1;
+        do
+        {
+            var view = View.Create(Config.PageSize, page, null, null);
+            var data = await RelationDataCollection.GetAvailableElementsAsync(view);
+
+            foreach (var item in data)
+            {
+                RelationDataCollection.AddElement(item.Id);
+            }
+
+            if (data.Count < Config.PageSize)
+            {
+                break;
+            }
+            else
+            {
+                page++;
+            }
+        }
+        while (true);
+
+        StateHasChanged();
+    }
+
+    protected async Task UnselectAllAsync()
+    {
+        if (RelationDataCollection == null)
+        {
+            return;
+        }
+
+        var items = RelationDataCollection.GetCurrentRelatedElementIds();
+        foreach (var item in items)
+        {
+            RelationDataCollection.RemoveElement(item);
+        }
+
+        StateHasChanged();
+    }
+
     private async Task UpdateOptionsAsync()
     {
         if (DataCollection == null)
         {
             return;
         }
 
-        var view = View.Create(25, _currentPage, _searchTerm, default);
+        var view = View.Create(Config.PageSize, _currentPage, _searchTerm, default);
         _options = await DataCollection.GetAvailableElementsAsync(view);
 
         if (view.MoreDataAvailable)

src/RapidCMS.UI/Components/Editors/EntitiesPicker.razor

@@ -1,12 +1,12 @@
 @inherits BaseMultiplePickerEditor
 @attribute [Relation(RelationType.Many)]
 
-@if (_options != null)
+@if (_options != null && Config != null)
 {
     var index = 0;
 
     <div class="form-control form-control-select-list @(CssHelper.GetDisplayModifier(DisplayType)) @(CssHelper.GetValidationClass(State))" id=@ElementId>
-        <SearchBar OnResetView="ResetViewAsync" OnSearch="SearchAsync" />
+        <SearchBar OnResetView="ResetViewAsync" OnSelectAll="SelectAllAsync" OnUnselectAll="UnselectAllAsync" OnSearch="SearchAsync" Config="Config" />
 
         @foreach (var option in _options)
         {

src/RapidCMS.UI/Components/Editors/EntityPicker.razor

@@ -1,12 +1,12 @@
 @inherits BasePicker
 @attribute [Relation(RelationType.One)]
 
-@if (_options != null)
+@if (_options != null && Config != null)
 {
     var index = 0;
 
     <div class="form-control form-control-select-list @(CssHelper.GetDisplayModifier(DisplayType)) @(CssHelper.GetValidationClass(State))" id=@ElementId>
-        <SearchBar OnResetView="ResetViewAsync" OnSearch="SearchAsync" />
+        <SearchBar OnResetView="ResetViewAsync" OnSearch="SearchAsync" Config="Config" />
 
         @foreach (var option in _options)
         {

src/RapidCMS.UI/Components/Editors/Parts/SearchBar.razor

@@ -1,7 +1,22 @@
 <ul class="nav nav-tabs">
-    <li class="nav-item">
-        <button type="button" class="btn btn-light" @onclick="@(async (x) => await OnResetView.InvokeAsync())"><Icon Name="Refresh" /> Reset</button>
-    </li>
+    @if (Config.EnableSelectAll)
+    {
+        <li class="nav-item">
+            <button type="button" class="btn btn-light" @onclick="@(async (x) => await OnSelectAll.InvokeAsync())"><Icon Name="MultiSelect" /> Select all</button>
+        </li>
+    }
+    @if (Config.EnableUnselectAll)
+    {
+        <li class="nav-item">
+            <button type="button" class="btn btn-light" @onclick="@(async (x) => await OnUnselectAll.InvokeAsync())"><Icon Name="RemoveFilter" /> Unselect all</button>
+        </li>
+    }
+    @if (Config.EnableReset)
+    {
+        <li class="nav-item">
+            <button type="button" class="btn btn-light" @onclick="@(async (x) => await OnResetView.InvokeAsync())"><Icon Name="Refresh" /> Reset</button>
+        </li>
+    }
 
     <li class="nav-item search">
         <div class="input-group">
@@ -24,5 +39,8 @@
     private string? _searchTerm;
 
     [Parameter] public EventCallback OnResetView { get; set; } = default!;
+    [Parameter] public EventCallback OnSelectAll { get; set; } = default!;
+    [Parameter] public EventCallback OnUnselectAll { get; set; } = default!;
     [Parameter] public EventCallback<string> OnSearch { get; set; } = default!;
-} 
+    [Parameter] public Picker Config { get; set; } = default!;
+}