Expressions: Confidently suggest completions after ::.

src/main/kotlin/platform/mixin/expression/MEExpressionTypedHandlerDelegate.kt

@@ -0,0 +1,42 @@
+/*
+ * Minecraft Development for IntelliJ
+ *
+ * https://mcdev.io/
+ *
+ * Copyright (C) 2024 minecraft-dev
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation, version 3.0 only.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.demonwav.mcdev.platform.mixin.expression
+
+import com.demonwav.mcdev.platform.mixin.expression.gen.psi.MEExpressionTypes
+import com.intellij.codeInsight.AutoPopupController
+import com.intellij.codeInsight.editorActions.TypedHandlerDelegate
+import com.intellij.openapi.editor.Editor
+import com.intellij.openapi.project.Project
+import com.intellij.psi.PsiFile
+import com.intellij.psi.util.elementType
+
+class MEExpressionTypedHandlerDelegate : TypedHandlerDelegate() {
+    override fun checkAutoPopup(charTyped: Char, project: Project, editor: Editor, file: PsiFile): Result {
+        if (charTyped == ':' && file.language == MEExpressionLanguage) {
+            AutoPopupController.getInstance(project).autoPopupMemberLookup(editor) {
+                val offset = editor.caretModel.offset
+                it.findElementAt(offset - 1).elementType == MEExpressionTypes.TOKEN_METHOD_REF
+            }
+            return Result.STOP
+        }
+        return Result.CONTINUE
+    }
+}

src/main/resources/META-INF/plugin.xml

@@ -514,6 +514,7 @@
         <completion.contributor language="MEExpression"
                                 implementationClass="com.demonwav.mcdev.platform.mixin.expression.MEExpressionCompletionContributor"/>
         <multiHostInjector implementation="com.demonwav.mcdev.platform.mixin.expression.MEExpressionInjector"/>
+        <typedHandler implementation="com.demonwav.mcdev.platform.mixin.expression.MEExpressionTypedHandlerDelegate"/>
         <!--endregion-->
 
         <!--endregion-->