Merge pull request #158 from SainsburyWellcomeCentre/environment-dev

Add environment condition operator

src/Aeon.Environment/Aeon.Environment.csproj

@@ -7,7 +7,7 @@
     <PackageTags>Bonsai Rx Project Aeon Environment</PackageTags>
     <TargetFramework>net472</TargetFramework>
     <VersionPrefix>0.1.0</VersionPrefix>
-    <VersionSuffix>build231005</VersionSuffix>
+    <VersionSuffix>build231007</VersionSuffix>
   </PropertyGroup>
 
   <ItemGroup>

src/Aeon.Environment/EnvironmentCondition.bonsai

@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="utf-8"?>
+<WorkflowBuilder Version="2.8.0"
+                 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                 xmlns:rx="clr-namespace:Bonsai.Reactive;assembly=Bonsai.Core"
+                 xmlns:aeon="clr-namespace:Aeon.Environment;assembly=Aeon.Environment"
+                 xmlns="https://bonsai-rx.org/2018/workflow">
+  <Workflow>
+    <Nodes>
+      <Expression xsi:type="WorkflowInput">
+        <Name>Source1</Name>
+      </Expression>
+      <Expression xsi:type="ExternalizedMapping">
+        <Property Name="Value" />
+      </Expression>
+      <Expression xsi:type="rx:Condition">
+        <Name>EnvironmentCondition</Name>
+        <Workflow>
+          <Nodes>
+            <Expression xsi:type="SubscribeSubject">
+              <Name>EnvironmentState</Name>
+            </Expression>
+            <Expression xsi:type="MemberSelector">
+              <Selector>Value.Type</Selector>
+            </Expression>
+            <Expression xsi:type="ExternalizedMapping">
+              <Property Name="Value" />
+            </Expression>
+            <Expression xsi:type="Equal">
+              <Operand xsi:type="WorkflowProperty" TypeArguments="aeon:EnvironmentStateType">
+                <Value>Experiment</Value>
+              </Operand>
+            </Expression>
+            <Expression xsi:type="WorkflowOutput" />
+          </Nodes>
+          <Edges>
+            <Edge From="0" To="1" Label="Source1" />
+            <Edge From="1" To="3" Label="Source1" />
+            <Edge From="2" To="3" Label="Source2" />
+            <Edge From="3" To="4" Label="Source1" />
+          </Edges>
+        </Workflow>
+      </Expression>
+      <Expression xsi:type="WorkflowOutput" />
+    </Nodes>
+    <Edges>
+      <Edge From="0" To="2" Label="Source1" />
+      <Edge From="1" To="2" Label="Source2" />
+      <Edge From="2" To="3" Label="Source1" />
+    </Edges>
+  </Workflow>
+</WorkflowBuilder>