[json] IDEA-293580 Make plain text URLs as clickable in JSON string value

GitOrigin-RevId: 27b6b76e694b943cc62db417cf8a390c71c132f1

json/resources/intellij.json.xml

@@ -137,6 +137,8 @@
     </intentionAction>
     <notificationGroup id="JSON Schema" displayType="NONE"/>
 
+    <psi.referenceContributor language="JSON" implementation="com.intellij.json.JsonWebReferenceContributor"/>
+
     <lang.parserDefinition language="JSONPath" implementationClass="com.intellij.jsonpath.psi.JsonPathParserDefinition"/>
     <lang.braceMatcher language="JSONPath" implementationClass="com.intellij.jsonpath.JsonPathPairedBraceMatcher"/>
     <lang.quoteHandler language="JSONPath" implementationClass="com.intellij.jsonpath.JsonPathQuoteHandler"/>

json/src/com/intellij/json/JsonWebReferenceContributor.java

@@ -0,0 +1,56 @@
+// Copyright 2000-2022 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+package com.intellij.json;
+
+import com.intellij.json.psi.JsonProperty;
+import com.intellij.json.psi.JsonStringLiteral;
+import com.intellij.json.psi.JsonValue;
+import com.intellij.openapi.paths.GlobalPathReferenceProvider;
+import com.intellij.openapi.paths.WebReference;
+import com.intellij.openapi.util.TextRange;
+import com.intellij.psi.*;
+import com.intellij.util.ProcessingContext;
+import org.jetbrains.annotations.NotNull;
+
+import static com.intellij.patterns.PlatformPatterns.psiElement;
+
+final class JsonWebReferenceContributor extends PsiReferenceContributor {
+  @Override
+  public void registerReferenceProviders(@NotNull PsiReferenceRegistrar registrar) {
+    registrar.registerReferenceProvider(
+      psiElement(JsonStringLiteral.class),
+      new PsiReferenceProvider() {
+        @Override
+        public boolean acceptsTarget(@NotNull PsiElement target) {
+          return false; // web references do not point to any real PsiElement
+        }
+
+        @Override
+        public PsiReference @NotNull [] getReferencesByElement(@NotNull PsiElement element, @NotNull ProcessingContext context) {
+          if (!(element instanceof JsonStringLiteral)) return PsiReference.EMPTY_ARRAY;
+          JsonStringLiteral stringLiteral = (JsonStringLiteral)element;
+
+          PsiElement parent = stringLiteral.getParent();
+          if (!(parent instanceof JsonProperty)) return PsiReference.EMPTY_ARRAY;
+
+          JsonValue jsonValueElement = ((JsonProperty)parent).getValue();
+          if (element != jsonValueElement) return PsiReference.EMPTY_ARRAY;
+
+          if (element.getTextLength() > 1000) return PsiReference.EMPTY_ARRAY; // JSON may be used as data format for huge strings
+          if (!element.textContains(':')) return PsiReference.EMPTY_ARRAY;
+
+          String textValue = stringLiteral.getValue();
+
+          if (GlobalPathReferenceProvider.isWebReferenceUrl(textValue)) {
+            TextRange valueTextRange = ElementManipulators.getValueTextRange(stringLiteral);
+            if (valueTextRange.isEmpty()) return PsiReference.EMPTY_ARRAY;
+
+            return new PsiReference[]{new WebReference(element, valueTextRange, textValue)};
+          }
+
+          return PsiReference.EMPTY_ARRAY;
+        }
+      },
+      PsiReferenceRegistrar.LOWER_PRIORITY
+    );
+  }
+}

json/tests/test/com/intellij/json/JsonHighlightingTest.java

@@ -87,6 +87,10 @@ public class JsonHighlightingTest extends JsonHighlightingTestBase {
     doTest();
   }
 
+  public void testWebUrls() {
+    doTest();
+  }
+
   public void testRainbow() {
     myFixture.testRainbow("test.json",
                           "{\n" +

json/tests/testData/highlighting/WebUrls.json

@@ -0,0 +1,6 @@
+{
+  <info descr="Property key">"some"</info>: "<info>http://localhost</info>",
+  <info descr="Property key">"secure"</info>: "<info>https://localhost</info>",
+  <info descr="Property key">"not-url"</info>: "https  :// localhost",
+  <info descr="Property key">"https://key-not-checked"</info>: "value"
+}