GTW-9956 Add the ability not to follow links on JCEF

GitOrigin-RevId: f7a7ed1e37e4f3d98ea7c53f48a4f6ebcd8512ce

platform/ui.jcef/api-dump-unreviewed.txt

@@ -85,6 +85,7 @@ a:com.intellij.ui.jcef.JBCefBrowserBase
 - p:<init>(com.intellij.ui.jcef.JBCefBrowserBuilder):V
 - p:createDefaultContextMenuHandler():com.intellij.ui.jcef.JBCefBrowserBase$DefaultCefContextMenuHandler
 - createImmediately():V
+- disableNavigation():V
 - dispose():V
 - p:dispose(java.lang.Runnable):V
 - getBrowserComponent():java.awt.Component

platform/ui.jcef/jcef/CefDelegate.java

@@ -25,4 +25,5 @@ public interface CefDelegate {
   @NotNull CefClient createClient();
   boolean isInitialized(@NotNull CefBrowser browser);
   @NotNull CefMessageRouter createMessageRouter(@Nullable CefMessageRouter.CefMessageRouterConfig config);
+  void disableNavigation(@NotNull CefBrowser browser);
 }

platform/ui.jcef/jcef/JBCefBrowserBase.java

@@ -507,6 +507,33 @@ public abstract class JBCefBrowserBase implements JBCefDisposable {
     }
   }
 
+  /**
+   * Disables navigation in the browser, initiated by user actions (clicks/gestures).
+   * Equivalent to the following code, but also works in remote development environments:
+   * <pre>{@code
+   *  browser.getJBCefClient().addRequestHandler(new CefRequestHandlerAdapter() {
+   *      @Override
+   *      public boolean onBeforeBrowse(CefBrowser browser, CefFrame frame, CefRequest request, boolean user_gesture, boolean is_redirect) {
+   *        return user_gesture;
+   *      }
+   *    }, browser.getCefBrowser());
+   * }</pre>
+   */
+  public void disableNavigation() {
+    CefDelegate delegate = getCefDelegate();
+    if (delegate != null) {
+      delegate.disableNavigation(myCefBrowser);
+    }
+    else {
+      myCefClient.addRequestHandler(new CefRequestHandlerAdapter() {
+        @Override
+        public boolean onBeforeBrowse(CefBrowser browser, CefFrame frame, CefRequest request, boolean user_gesture, boolean is_redirect) {
+          return user_gesture;
+        }
+      }, myCefBrowser);
+    }
+  }
+
   /**
    * Returns the root browser component to be inserted into the UI.
    * This component adapts the internal JCEF component to IJ.