DYN-6365 Promote Gate node from GD Extension to Dynamo Core.

src/Libraries/CoreNodeModels/CoreNodeModelsImages.resx

@@ -1376,6 +1376,29 @@
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         2zaJFT8arCiKovwdxnwAzk7Zcq1S2RAAAAAASUVORK5CYII=
+</value>
+  </data>
+  <data name="CoreNodeModels.Gate.Logic.Large" type="System.Drawing.Bitmap, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+    <value>
+        iVBORw0KGgoAAAANSUhEUgAAAGAAAABgCAYAAADimHc4AAAABGdBTUEAALGPC/xhBQAAAAlwSFlzAAAO
+        wgAADsIBFShKgAAAAZxJREFUeF7t2L1t22AQBmAN4kVcugyQ1oN4kRQZw60nSJMdUrjyAB6BvpPPAJF8
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+        AHwth8MLYH2lDRT2bNoAAAAASUVORK5CYII=
+</value>
+  </data>
+  <data name="CoreNodeModels.Logic.Gate.Small" type="System.Drawing.Bitmap, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+    <value>
+        iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAABGdBTUEAALGPC/xhBQAAAAlwSFlzAAAO
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+        RK5CYII=
 </value>
   </data>
 </root>

src/Libraries/CoreNodeModels/Logic/Gate.cs

@@ -0,0 +1,72 @@
+using CoreNodeModels.Properties;
+using Dynamo.Graph.Nodes;
+using Newtonsoft.Json;
+using ProtoCore.AST.AssociativeAST;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace CoreNodeModels.Logic
+{
+    [NodeName("Gate")]
+    [NodeDescription(nameof(Resources.GateDescription), typeof(Resources))]
+    [NodeCategory(BuiltinNodeCategories.LOGIC)]
+    [NodeSearchTags(nameof(Resources.GateSearchTags), typeof(Resources))]
+    [InPortNames(">")]
+    [InPortTypes("object")]
+    [InPortDescriptions(nameof(Resources.GateInPortToolTip), nameof(Resources))]
+    [OutPortNames(">")]
+    [OutPortTypes("object")]
+    [OutPortDescriptions(nameof(Resources.GateOutPortToolTip), nameof(Resources))]
+    [IsDesignScriptCompatible]
+    public class Gate : NodeModel
+    {
+        private bool value;
+
+        [JsonProperty("InputValue")]
+        public virtual bool Value
+        {
+            get
+            {
+                return value;
+            }
+            set
+            {
+                if (!this.value.Equals(value))
+                {
+                    this.value = value;
+                    ClearDirtyFlag();
+                    OnNodeModified();
+                    RaisePropertyChanged(nameof(Value));
+                }
+            }
+        }
+
+        [JsonConstructor]
+        private Gate(IEnumerable<PortModel> inPorts, IEnumerable<PortModel> outPorts) : base(inPorts, outPorts)
+        {
+            ShouldDisplayPreviewCore = false;
+        }
+
+        public Gate()
+        {
+            Value = false;
+            RegisterAllPorts();
+            ShouldDisplayPreviewCore = false;
+        }
+
+        public override IEnumerable<AssociativeNode> BuildOutputAst(List<AssociativeNode> inputAstNodes)
+        {
+            // Check that node can run
+            if (!Value)
+            {
+                return new[]
+                    {AstFactory.BuildAssignment(GetAstIdentifierForOutputIndex(0), AstFactory.BuildNullNode())};
+            }
+
+            return new[] { AstFactory.BuildAssignment(GetAstIdentifierForOutputIndex(0), inputAstNodes[0]) };
+        }
+    }
+}

src/Libraries/CoreNodeModels/Properties/Resources.en-US.resx

@@ -641,4 +641,18 @@ Default value: {0}</value>
   <data name="TooltipTextQuery" xml:space="preserve">
     <value>Nodes that query data</value>
   </data>
+  <data name="GateDescription" xml:space="preserve">
+    <value>Block data passing through this node to downstream nodes. Node returns the input data only if the node value is set to Open.
+
+In Generative Design workflows, this node should be used to control and block the behavior of nodes that will place elements in Revit</value>
+  </data>
+  <data name="GateInPortToolTip" xml:space="preserve">
+    <value>Data to pass to a downstream node with gated controls.</value>
+  </data>
+  <data name="GateOutPortToolTip" xml:space="preserve">
+    <value>Data</value>
+  </data>
+  <data name="GateSearchTags" xml:space="preserve">
+    <value>gate;stop;data</value>
+  </data>
 </root>

src/Libraries/CoreNodeModels/Properties/Resources.resx

@@ -641,4 +641,18 @@ Default value: {0}</value>
   <data name="TooltipTextQuery" xml:space="preserve">
     <value>Nodes that query data</value>
   </data>
+  <data name="GateDescription" xml:space="preserve">
+    <value>Block data passing through this node to downstream nodes. Node returns the input data only if the node value is set to Open.
+
+In Generative Design workflows, this node should be used to control and block the behavior of nodes that will place elements in Revit</value>
+  </data>
+  <data name="GateInPortToolTip" xml:space="preserve">
+    <value>Data to pass to a downstream node with gated controls.</value>
+  </data>
+  <data name="GateOutPortToolTip" xml:space="preserve">
+    <value>Data</value>
+  </data>
+  <data name="GateSearchTags" xml:space="preserve">
+    <value>gate;stop;data</value>
+  </data>
 </root>

src/Libraries/CoreNodeModelsWpf/NodeViewCustomizations/Gate.cs

@@ -0,0 +1,70 @@
+using CoreNodeModels;
+using CoreNodeModels.Logic;
+using CoreNodeModels.Properties;
+using Dynamo.Controls;
+using Dynamo.UI;
+using Dynamo.Wpf;
+using Dynamo.Wpf.Properties;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Controls.Primitives;
+using System.Windows.Data;
+
+namespace CoreNodeModelsWpf.Nodes
+{
+    public class GateNodeViewCustomization : INodeViewCustomization<Gate>
+    {
+        public void CustomizeView(Gate model, NodeView nodeView)
+        {
+            //add a text box to the input grid of the control
+            var rbTrue = new RadioButton();
+            var rbFalse = new RadioButton();
+            rbTrue.Style = rbFalse.Style = (Style)SharedDictionaryManager.DynamoModernDictionary["RadioButton"];
+
+            //use a unique name for the button group
+            //so other instances of this element don't get confused
+            string groupName = Guid.NewGuid().ToString();
+            rbTrue.GroupName = groupName;
+            rbFalse.GroupName = groupName;
+
+            rbTrue.Content = CoreNodeModelWpfResources.GateOpen;
+            rbTrue.Padding = new Thickness(0, 0, 12, 0);
+            rbFalse.Content = CoreNodeModelWpfResources.GateClose;
+            rbFalse.Padding = new Thickness(0);
+            var wp = new WrapPanel
+            {
+                HorizontalAlignment = HorizontalAlignment.Stretch,
+                VerticalAlignment = VerticalAlignment.Stretch,
+                Margin = new Thickness(10, 5, 10, 0),
+                Orientation = Orientation.Horizontal
+            };
+
+            wp.Children.Add(rbTrue);
+            wp.Children.Add(rbFalse);
+            nodeView.inputGrid.Children.Add(wp);
+
+            rbFalse.DataContext = model;
+            rbTrue.DataContext = model;
+
+            var rbTrueBinding = new Binding("Value") { Mode = BindingMode.TwoWay, };
+            rbTrue.SetBinding(ToggleButton.IsCheckedProperty, rbTrueBinding);
+
+            var rbFalseBinding = new Binding("Value")
+            {
+                Mode = BindingMode.TwoWay,
+                Converter = new InverseBoolDisplay()
+            };
+            rbFalse.SetBinding(ToggleButton.IsCheckedProperty, rbFalseBinding);
+        }
+
+        public void Dispose()
+        {
+            // Nothing to dispose
+        }
+    }
+}

src/Libraries/CoreNodeModelsWpf/Properties/CoreNodeModelWpfResources.en-US.resx

@@ -315,4 +315,10 @@ Dictionary&lt;string, List&lt;List&lt;double&gt;&gt;&gt;</value>
     <data name="ResizeThumbToolTip" xml:space="preserve">
     <value>Drag to modify the size of the chart</value>
   </data>
+  <data name="GateClose" xml:space="preserve">
+    <value>Close</value>
+  </data>
+  <data name="GateOpen" xml:space="preserve">
+    <value>Open</value>
+  </data>
 </root>

src/Libraries/CoreNodeModelsWpf/Properties/CoreNodeModelWpfResources.resx

@@ -315,4 +315,10 @@ Dictionary&lt;string, List&lt;List&lt;double&gt;&gt;&gt;</value>
   <data name="ResizeThumbToolTip" xml:space="preserve">
     <value>Drag to modify the size of the chart</value>
   </data>
+  <data name="GateClose" xml:space="preserve">
+    <value>Close</value>
+  </data>
+  <data name="GateOpen" xml:space="preserve">
+    <value>Open</value>
+  </data>
 </root>

src/LibraryViewExtensionWebView2/web/library/layoutSpecs.json

@@ -877,6 +877,9 @@
               "iconUrl": "",
               "elementType": "group",
               "include": [
+                {
+                  "path": "Core.Logic.Gate"
+                },
                 {
                   "path": "BuiltIn.LoopWhile"
                 },

test/DynamoCoreWpfTests/GateTests.cs

@@ -0,0 +1,75 @@
+using CoreNodeModels.Input;
+using CoreNodeModels.Logic;
+using Dynamo;
+using Dynamo.Graph.Workspaces;
+using Dynamo.Tests;
+using DynamoCoreWpfTests.Utility;
+using NUnit.Framework;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using SystemTestServices;
+
+namespace DynamoCoreWpfTests
+{
+    internal class GateTests : DynamoModelTestBase
+    {
+        protected override void GetLibrariesToPreload(List<string> libraries)
+        {
+            libraries.Add("FunctionObject.ds");
+            libraries.Add("DesignScriptBuiltin.dll");
+            libraries.Add("BuiltIn.ds");
+            libraries.Add("DSCPython.dll");
+            libraries.Add("FFITarget.dll");
+        }
+
+        [Test]
+        public void SettingNodeAsOpenPassesData()
+        {
+            string openPath = Path.Combine(TestDirectory, @"UI\UIGateNode.dyn");
+            RunModel(openPath);
+
+            Guid gateNodeGuid = Guid.Parse("0a4e291d93a84260bd9f37fde3158d83");
+            var gateNode = CurrentDynamoModel.CurrentWorkspace.NodeFromWorkspace(gateNodeGuid) as Gate;
+
+            Assert.AreEqual(false, gateNode.Value);
+
+            //Test that the downstream connected node IsNull is true
+            AssertPreviewValue("448ad21ed4af42b4ae71c45961a173ff", true);
+
+            //Open the gate node
+            gateNode.Value = true;
+
+            BeginRun();
+
+            //Test that the downstream connected node IsNull is now not null
+            AssertPreviewValue("448ad21ed4af42b4ae71c45961a173ff", false);
+        }
+
+        [Test]
+        public void SettingNodeAsClosedBlocksData()
+        {
+            string openPath = Path.Combine(TestDirectory, @"UI\UIGateNode.dyn");
+            RunModel(openPath);
+
+            Guid gateNodeGuid = Guid.Parse("e323a525bab546199c3635ce33c8c46b");
+            var gateNode = CurrentDynamoModel.CurrentWorkspace.NodeFromWorkspace(gateNodeGuid) as Gate;
+
+            Assert.AreEqual(true, gateNode.Value);
+
+            //Test that the downstream connected node IsNull is false
+            AssertPreviewValue("414438cdd24f4d74b08e462e0b17ddff", false);
+
+            //Open the gate node
+            gateNode.Value = false;
+
+            BeginRun();
+
+            //Test that the downstream connected node IsNull is now not null
+            AssertPreviewValue("414438cdd24f4d74b08e462e0b17ddff", true);
+        }
+    }
+}