Merge pull request #63 from zHaytam/develop

Version 1.4.1

Author: zHaytam

CHANGELOG.md

@@ -4,6 +4,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Diagrams [1.4.1] - 2020-12-24
+
+### Added
+
+- `EnableVirtualization` option: whether to only render visible nodes or not.
+- `RegisterModelComponent` overload that takes `Type`s as input for dynamic registrations.
+
 ## Diagrams [1.4.0] - 2020-12-12
 
 ### Added

samples/SharedDemo/Demos/Simple.razor

@@ -23,6 +23,10 @@
         <input id="panningCheckbox" type="checkbox" class="custom-control-input" @onchange="TogglePanning" checked />
         <label class="custom-control-label" for="panningCheckbox">Toggle Panning</label>
     </div>
+    <div class="custom-control custom-checkbox ml-2">
+        <input id="virtualizationCheckbox" type="checkbox" class="custom-control-input" @onchange="ToggleVirtualization" checked />
+        <label class="custom-control-label" for="virtualizationCheckbox">Toggle Virtualization</label>
+    </div>
 </div>
 
 <CascadingValue Name="DiagramManager" Value="diagramManager">

samples/SharedDemo/Demos/Simple.razor.cs

@@ -25,6 +25,9 @@ protected override void OnInitialized()
 
         protected void TogglePanning() => diagramManager.Options.AllowPanning = !diagramManager.Options.AllowPanning;
 
+        protected void ToggleVirtualization()
+            => diagramManager.Options.EnableVirtualization = !diagramManager.Options.EnableVirtualization;
+
         private NodeModel NewNode(double x, double y)
         {
             var node = new NodeModel(new Point(x, y));

src/Blazor.Diagrams.Core/Blazor.Diagrams.Core.csproj

@@ -7,10 +7,10 @@
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
     <Authors>zHaytam</Authors>
     <Description>A fully customizable and extensible all-purpose diagrams library for Blazor</Description>
-    <AssemblyVersion>1.4.0</AssemblyVersion>
-    <FileVersion>1.4.0</FileVersion>
+    <AssemblyVersion>1.4.1</AssemblyVersion>
+    <FileVersion>1.4.1</FileVersion>
     <RepositoryUrl>https://github.com/zHaytam/Blazor.Diagrams</RepositoryUrl>
-    <Version>1.4.0</Version>
+    <Version>1.4.1</Version>
     <PackageId>Z.Blazor.Diagrams.Core</PackageId>
     <PackageTags>blazor diagrams diagramming svg drag</PackageTags>
     <Product>Z.Blazor.Diagrams.Core</Product>

src/Blazor.Diagrams.Core/DiagramManager.cs

@@ -278,12 +278,14 @@ public void UnregisterSubManager<T>() where T : DiagramSubManager
         }
 
         public void RegisterModelComponent<M, C>() where M : Model where C : ComponentBase
+            => RegisterModelComponent(typeof(M), typeof(C));
+
+        public void RegisterModelComponent(Type modelType, Type componentType)
         {
-            var modelType = typeof(M);
             if (_componentByModelMapping.ContainsKey(modelType))
                 throw new Exception($"Component already registered for model '{modelType.Name}'.");
 
-            _componentByModelMapping.Add(modelType, typeof(C));
+            _componentByModelMapping.Add(modelType, componentType);
         }
 
         public Type? GetComponentForModel<M>(M model) where M : Model

src/Blazor.Diagrams.Core/DiagramOptions.cs

@@ -18,6 +18,8 @@ public class DiagramOptions
         public bool AllowMultiSelection { get; set; } = true;
         [Description("Whether to allow panning or not")]
         public bool AllowPanning { get; set; } = true;
+        [Description("Only render visible nodes")]
+        public bool EnableVirtualization { get; set; } = true;
 
         public DiagramZoomOptions Zoom { get; set; } = new DiagramZoomOptions();
         public DiagramLinkOptions Links { get; set; } = new DiagramLinkOptions();

src/Blazor.Diagrams/Blazor.Diagrams.csproj

@@ -5,11 +5,11 @@
     <RazorLangVersion>3.0</RazorLangVersion>
     <Authors>zHaytam</Authors>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
-    <AssemblyVersion>1.4.0</AssemblyVersion>
-    <FileVersion>1.4.0</FileVersion>
+    <AssemblyVersion>1.4.1</AssemblyVersion>
+    <FileVersion>1.4.1</FileVersion>
     <RepositoryUrl>https://github.com/zHaytam/Blazor.Diagrams</RepositoryUrl>
     <Description>A fully customizable and extensible all-purpose diagrams library for Blazor</Description>
-    <Version>1.4.0</Version>
+    <Version>1.4.1</Version>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <PackageTags>blazor diagrams diagramming svg drag</PackageTags>
     <PackageId>Z.Blazor.Diagrams</PackageId>

src/Blazor.Diagrams/Components/Renderers/NodeRenderer.cs

@@ -129,6 +129,10 @@ protected override async Task OnAfterRenderAsync(bool firstRender)
 
         private async void CheckVisibility()
         {
+            // _isVisible must be true in case virtualization gets disabled and some nodes are hidden
+            if (!DiagramManager.Options.EnableVirtualization && _isVisible)
+                return;
+
             if (Node.Size == null)
                 return;