Update and improve help info logs

dev/core/src/com/google/gwt/dev/DevMode.java

@@ -30,7 +30,7 @@
 import com.google.gwt.dev.shell.jetty.JettyLauncher;
 import com.google.gwt.dev.ui.RestartServerCallback;
 import com.google.gwt.dev.ui.RestartServerEvent;
-import com.google.gwt.dev.util.InstalledHelpInfo;
+import com.google.gwt.dev.util.GwtprojectOrgHelpInfo;
 import com.google.gwt.dev.util.arg.ArgHandlerDeployDir;
 import com.google.gwt.dev.util.arg.ArgHandlerExtraDir;
 import com.google.gwt.dev.util.arg.ArgHandlerFilterJsInteropExports;
@@ -731,7 +731,7 @@ private void validateServletTags(TreeLogger logger, ServletValidator servletVali
 
     TreeLogger servletLogger =
         logger.branch(TreeLogger.DEBUG, "Validating <servlet> tags for module '" + module.getName()
-            + "'", null, new InstalledHelpInfo("servletMappings.html"));
+            + "'", null, new GwtprojectOrgHelpInfo("servletMappings.html"));
     for (String servletPath : servletPaths) {
       String servletClass = module.findServletForPath(servletPath);
       assert (servletClass != null);

dev/core/src/com/google/gwt/dev/javac/JSORestrictionsChecker.java

@@ -16,7 +16,7 @@
 package com.google.gwt.dev.javac;
 
 import com.google.gwt.dev.jdt.SafeASTVisitor;
-import com.google.gwt.dev.util.InstalledHelpInfo;
+import com.google.gwt.dev.util.GwtprojectOrgHelpInfo;
 import com.google.gwt.dev.util.collect.Stack;
 
 import org.eclipse.jdt.core.compiler.CharOperation;
@@ -43,16 +43,14 @@
  * Check a compilation unit for violations of
  * {@link com.google.gwt.core.client.JavaScriptObject JavaScriptObject} (JSO)
  * restrictions. The restrictions are summarized in
- * <code>jsoRestrictions.html</code>.
- *
- *
+ * @see <a href="https://www.gwtproject.org/doc/latest/DevGuideCodingBasicsJSNI.html#important">Important Notes</a>.
  * Any violations found are attached as errors on the
  * CompilationUnitDeclaration.
  *
  * @see <a
  *      href="http://code.google.com/p/google-web-toolkit/wiki/OverlayTypes">Overlay
  *      types design doc</a>
- * @see jsoRestrictions.html
+ * @see <a href="https://www.gwtproject.org/doc/latest/DevGuideCodingBasicsJSNI.html#important">Important Notes</a>
  */
 public class JSORestrictionsChecker {
 
@@ -288,8 +286,8 @@ static String errAlreadyImplemented(String intfName, String impl1,
 
   private static void errorOn(ASTNode node, CompilationUnitDeclaration cud,
       String error) {
-    GWTProblem.recordError(node, cud, error, new InstalledHelpInfo(
-        "jsoRestrictions.html"));
+    GWTProblem.recordError(node, cud, error, new GwtprojectOrgHelpInfo(
+        "/doc/latest/DevGuideCodingBasicsJSNI.html"));
   }
 
   private final CompilationUnitDeclaration cud;

dev/core/src/com/google/gwt/dev/javac/JsniReferenceResolver.java

@@ -23,7 +23,7 @@
 import com.google.gwt.dev.js.ast.JsFunction;
 import com.google.gwt.dev.js.ast.JsModVisitor;
 import com.google.gwt.dev.js.ast.JsNameRef;
-import com.google.gwt.dev.util.InstalledHelpInfo;
+import com.google.gwt.dev.util.GwtprojectOrgHelpInfo;
 import com.google.gwt.dev.util.JsniRef;
 import com.google.gwt.dev.util.collect.Stack;
 import com.google.gwt.thirdparty.guava.common.collect.Lists;
@@ -824,7 +824,7 @@ private boolean isUnsafeLongAnnotation(Annotation annot, ClassScope scope) {
   }
 
   private void longAccessError(ASTNode node, String message) {
-    GWTProblem.recordError(node, cud, message, new InstalledHelpInfo(
+    GWTProblem.recordError(node, cud, message, new GwtprojectOrgHelpInfo(
         "longJsniRestriction.html"));
   }
 

dev/core/src/com/google/gwt/dev/shell/BrowserChannelServer.java

@@ -16,7 +16,6 @@
 package com.google.gwt.dev.shell;
 
 import com.google.gwt.core.ext.TreeLogger;
-import com.google.gwt.core.ext.TreeLogger.HelpInfo;
 import com.google.gwt.dev.shell.BrowserChannel.SessionHandler.ExceptionOrReturnValue;
 import com.google.gwt.dev.shell.JsValue.DispatchObject;
 import com.google.gwt.dev.util.log.dashboard.DashboardNotifier;
@@ -25,9 +24,7 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
-import java.net.MalformedURLException;
 import java.net.Socket;
-import java.net.URL;
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.Map;
@@ -412,27 +409,8 @@ protected void processConnection() throws IOException, BrowserChannelException {
         moduleName = oldLoadModule.getModuleName();
         userAgent = oldLoadModule.getUserAgent();
         protocolVersion = 1;
-        HelpInfo helpInfo = new HelpInfo() {
-          @Override
-          public String getAnchorText() {
-            return "UsingOOPHM wiki page";
-          }
-
-          @Override
-          public URL getURL() {
-            try {
-              // TODO(jat): better landing page for more info
-              return new URL(
-                  "http://code.google.com/p/google-web-toolkit/wiki/UsingOOPHM");
-            } catch (MalformedURLException e) {
-              // can't happen
-              return null;
-            }
-          }
-        };
         logger.log(TreeLogger.WARN, "Connection from old browser plugin -- "
-            + "please upgrade to a later version for full functionality", null,
-            helpInfo);
+            + "please upgrade to a later version for full functionality");
         break;
       case CHECK_VERSIONS:
         String connectError = null;

dev/core/src/com/google/gwt/dev/shell/jetty/JettyLauncher.java

@@ -19,7 +19,7 @@
 import com.google.gwt.core.ext.ServletContainerLauncher;
 import com.google.gwt.core.ext.TreeLogger;
 import com.google.gwt.core.ext.UnableToCompleteException;
-import com.google.gwt.dev.util.InstalledHelpInfo;
+import com.google.gwt.dev.util.GwtprojectOrgHelpInfo;
 import com.google.gwt.thirdparty.guava.common.collect.Iterators;
 import com.google.gwt.thirdparty.guava.common.collect.Lists;
 
@@ -452,7 +452,7 @@ private boolean addContainingClassPathEntry(String warnMessage,
         }
         branch = branch.branch(logLevel, "Adding classpath entry '"
             + classPathURL + "' to the web app classpath for this session",
-            null, new InstalledHelpInfo("webAppClassPath.html"));
+            null, new GwtprojectOrgHelpInfo("webAppClassPath.html"));
         try {
           addClassPath(classPathURL);
           return true;

dev/core/src/com/google/gwt/dev/util/GwtprojectOrgHelpInfo.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright 2025 GWT Project Authors
+ *
+ * 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
+ *
+ * http://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.gwt.dev.util;
+
+import com.google.gwt.core.ext.TreeLogger;
+
+import java.net.MalformedURLException;
+import java.net.URL;
+
+/**
+ * Reference to a help document on the GWT project website.
+ */
+public class GwtprojectOrgHelpInfo extends TreeLogger.HelpInfo {
+  private URL url;
+
+  public GwtprojectOrgHelpInfo(String relativeUrl) {
+    try {
+      url = new URL("https://gwtproject.org/doc/latest/gwt-dev-help/" + relativeUrl);
+    } catch (MalformedURLException ignored) {
+      // ignore, url will be null
+    }
+  }
+
+  @Override
+  public URL getURL() {
+    return url;
+  }
+}

dev/core/src/com/google/gwt/dev/util/InstalledHelpInfo.java

@@ -24,7 +24,11 @@
 
 /**
  * Help info based on the GWT installation directory.
+ *
+ * @deprecated Use {@link GwtprojectOrgHelpInfo} instead so that links work when users aren't using
+ * the GWT SDK zip.
  */
+@Deprecated
 public class InstalledHelpInfo extends HelpInfo {
   private URL url;