Added a new custom Module Type for Sherlock

sherlock-platform/customization/com.google.sherlock.customization.iml

@@ -9,5 +9,7 @@
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
     <orderEntry type="module" module-name="intellij.platform.ide.impl" />
+    <orderEntry type="module" module-name="intellij.platform.lang.core" />
+    <orderEntry type="module" module-name="intellij.platform.core.ui" />
   </component>
 </module>

sherlock-platform/customization/resources/META-INF/SherlockPlatformCustomization.xml

@@ -1,14 +1,18 @@
 <!-- Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license. -->
 <idea-plugin>
-
-    <depends>com.intellij.modules.platform</depends>
-    <actions resource-bundle="messages.ActionsBundle">
-        <group id="WelcomeScreen.Platform.NewProject">
-            <action id="NewProjectStep"
-                    class="com.google.sherlock.onboarding.NewProjectStep"
-                    text="New Project"/>
-            <reference ref="WelcomeScreen.OpenDirectoryProject"/>
-            <add-to-group group-id="WelcomeScreen.QuickStart" anchor="first"/>
-        </group>
-    </actions>
+  <depends>com.intellij.modules.platform</depends>
+  <extensions defaultExtensionNs="com.intellij">
+    <moduleType
+      id="SHERLOCK_MODULE_TYPE"
+      implementationClass="com.google.sherlock.module.SherlockModuleType"/>
+  </extensions>
+  <actions resource-bundle="messages.ActionsBundle">
+    <group id="WelcomeScreen.Platform.NewProject">
+      <action id="NewProjectStep"
+              class="com.google.sherlock.onboarding.NewProjectStep"
+              text="New Project"/>
+      <reference ref="WelcomeScreen.OpenDirectoryProject"/>
+      <add-to-group group-id="WelcomeScreen.QuickStart" anchor="first"/>
+    </group>
+  </actions>
 </idea-plugin>

sherlock-platform/customization/src/com/google/sherlock/module/SherlockModuleBuilder.java

@@ -0,0 +1,40 @@
+/***
+ * Copyright 2024 Google LLC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ ***/
+package com.google.sherlock.module;
+
+import com.intellij.ide.util.projectWizard.ModuleBuilder;
+import com.intellij.ide.util.projectWizard.ModuleWizardStep;
+import com.intellij.ide.util.projectWizard.WizardContext;
+import com.intellij.openapi.Disposable;
+import com.intellij.openapi.module.ModuleType;
+import com.intellij.openapi.roots.ModifiableRootModel;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class SherlockModuleBuilder extends ModuleBuilder {
+  @Override
+  public void setupRootModel(@NotNull ModifiableRootModel model) {
+  }
+  @Override
+  public ModuleType<SherlockModuleBuilder> getModuleType() {
+    return SherlockModuleType.getInstance();
+  }
+  @Nullable
+  @Override
+  public ModuleWizardStep getCustomOptionsStep(WizardContext context, Disposable parentDisposable) {
+    return null;
+  }
+}
+

sherlock-platform/customization/src/com/google/sherlock/module/SherlockModuleType.java

@@ -0,0 +1,69 @@
+/***
+ * Copyright 2024 Google LLC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ ***/
+package com.google.sherlock.module;
+
+import com.intellij.ide.util.projectWizard.ModuleWizardStep;
+import com.intellij.ide.util.projectWizard.WizardContext;
+import com.intellij.openapi.module.ModuleType;
+import com.intellij.openapi.module.ModuleTypeManager;
+import com.intellij.openapi.roots.ui.configuration.ModulesProvider;
+import com.intellij.util.PlatformIcons;
+import org.jetbrains.annotations.NotNull;
+
+import javax.swing.*;
+
+
+public final class SherlockModuleType extends ModuleType<SherlockModuleBuilder> {
+  public static final String ID = "SHERLOCK_MODULE_TYPE";
+
+  SherlockModuleType() {
+    super(ID);
+  }
+
+  @NotNull
+  @Override
+  public SherlockModuleBuilder createModuleBuilder() {
+    return new SherlockModuleBuilder();
+  }
+
+  @NotNull
+  @Override
+  public String getName() {
+    return "SHERLOCK MODULE";
+  }
+
+  @NotNull
+  @Override
+  public String getDescription() {
+    return "Sherlock's custom module type";
+  }
+
+  @NotNull
+  @Override
+  public Icon getNodeIcon(@Deprecated boolean b) {
+    return PlatformIcons.ABSTRACT_METHOD_ICON;
+  }
+
+  @Override
+  public ModuleWizardStep @NotNull [] createWizardSteps(@NotNull WizardContext wizardContext,
+                                                        @NotNull SherlockModuleBuilder moduleBuilder,
+                                                        @NotNull ModulesProvider modulesProvider) {
+    return super.createWizardSteps(wizardContext, moduleBuilder, modulesProvider);
+  }
+
+  public static SherlockModuleType getInstance() {
+    return (SherlockModuleType)ModuleTypeManager.getInstance().findByID(ID);
+  }
+}