IDEA-131899 Writing Javadoc does not automatically trigger hinting / auto-completion

autopopup in parameter names

java/java-impl/src/com/intellij/codeInsight/completion/JavadocCompletionConfidence.java

@@ -16,17 +16,14 @@
 package com.intellij.codeInsight.completion;
 
 import com.intellij.patterns.PlatformPatterns;
-import com.intellij.psi.JavaDocTokenType;
-import com.intellij.psi.PsiElement;
-import com.intellij.psi.PsiFile;
-import com.intellij.psi.PsiJavaCodeReferenceElement;
-import com.intellij.psi.impl.source.javadoc.PsiDocMethodOrFieldRef;
+import com.intellij.psi.*;
+import com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference;
 import com.intellij.psi.javadoc.PsiDocTag;
 import com.intellij.util.ThreeState;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import static com.intellij.patterns.PsiJavaPatterns.psiElement;
-import static com.intellij.patterns.StandardPatterns.or;
 
 /**
  * @author peter
@@ -36,9 +33,7 @@ public class JavadocCompletionConfidence extends CompletionConfidence {
   @NotNull
   @Override
   public ThreeState shouldSkipAutopopup(@NotNull PsiElement contextElement, @NotNull PsiFile psiFile, int offset) {
-    if (psiElement().inside(PsiDocTag.class).inside(
-      or(psiElement(PsiJavaCodeReferenceElement.class), psiElement(PsiDocMethodOrFieldRef.class)))
-      .accepts(contextElement)) {
+    if (psiElement().inside(PsiDocTag.class).accepts(contextElement) && findJavaReference(psiFile, offset - 1) != null) {
       return ThreeState.NO;
     }
     if (PlatformPatterns.psiElement(JavaDocTokenType.DOC_TAG_NAME).accepts(contextElement)) {
@@ -46,4 +41,18 @@ public class JavadocCompletionConfidence extends CompletionConfidence {
     }
     return super.shouldSkipAutopopup(contextElement, psiFile, offset);
   }
+
+  @Nullable
+  private static PsiJavaReference findJavaReference(final PsiFile file, final int offset) {
+    PsiReference reference = file.findReferenceAt(offset);
+    if (reference instanceof PsiMultiReference) {
+      for (final PsiReference psiReference : ((PsiMultiReference)reference).getReferences()) {
+        if (psiReference instanceof PsiJavaReference) {
+          return (PsiJavaReference)psiReference;
+        }
+      }
+    }
+    return reference instanceof PsiJavaReference ? (PsiJavaReference)reference : null;
+  }
+
 }

java/java-tests/testSrc/com/intellij/codeInsight/completion/JavaAutoPopupTest.groovy

@@ -247,7 +247,6 @@ class JavaAutoPopupTest extends CompletionAutoPopupTestCase {
     """
   }
 
-
   public void "test popup in javadoc reference"() {
     myFixture.configureByText("a.java", """
     /**
@@ -300,6 +299,19 @@ class Foo {
     type 'o'
     assert !lookup
   }
+  
+  public void "test autopopup in javadoc parameter name"() {
+    myFixture.configureByText("a.java", """
+class Foo {
+  /**
+  * @param <caret>
+  */
+  void foo2(Object oooooooo) {}
+}
+    """)
+    type 'o'
+    assert lookup
+  }
 
   public void testPrefixLengthDependentSorting() {
     myFixture.addClass("package foo; public class PsiJavaCodeReferenceElement {}")