[java] fixes automatic closing of a not-alone text block (IDEA-217252)

GitOrigin-RevId: cb9a0e482384295d8708faa680deed5ea3a7aeb8

java/java-impl/src/com/intellij/codeInsight/editorActions/JavaQuoteHandler.java

@@ -1,8 +1,10 @@
 // Copyright 2000-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 package com.intellij.codeInsight.editorActions;
 
+import com.intellij.openapi.editor.Document;
 import com.intellij.openapi.editor.Editor;
 import com.intellij.openapi.editor.highlighter.HighlighterIterator;
+import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.psi.*;
 import com.intellij.psi.impl.source.tree.ElementType;
 import com.intellij.psi.tree.IElementType;
@@ -106,6 +108,17 @@ public class JavaQuoteHandler extends SimpleTokenSetQuoteHandler implements Java
     return null;
   }
 
+  @Override
+  public boolean hasNonClosedLiteral(Editor editor, HighlighterIterator iterator, int offset) {
+    if (iterator.getTokenType() == JavaTokenType.TEXT_BLOCK_LITERAL) {
+      Document document = iterator.getDocument();
+      if (document != null && StringUtil.equals(document.getCharsSequence().subSequence(iterator.getStart(), offset + 1), "\"\"\"")) {
+        return true;
+      }
+    }
+    return super.hasNonClosedLiteral(editor, iterator, offset);
+  }
+
   @Override
   public void insertClosingQuote(@NotNull Editor editor, int offset, @NotNull CharSequence closingQuote) {
     if (closingQuote.charAt(0) == '`') {

java/java-tests/testSrc/com/intellij/java/codeInsight/editorActions/JavaQuoteTest.groovy

@@ -30,6 +30,7 @@ class JavaQuoteTest extends LightJavaCodeInsightFixtureTestCase {
     doTest ' """."<caret>"" ', ' """.""<caret>" '
     doTest ' """.""<caret>" ', ' """."""<caret> '
   }
+  void testPrecedingTextBlock() { doTest 'f(""<caret> + """\n  .""")', 'f("""\n<caret>""" + """\n  .""")' }
 
   private void doTest(String before, String after, char c = '"') {
     myFixture.configureByText("a.java", "class C {{\n  ${before}\n}}")