[WebKit] Allow enabling WebKit Browser search per Browser widget

This change disables the search added for #2222 per default, allowing
client code to enable the search with the SWT.SEARCH style.

Fixes: #2267

Author: trancexpress

bundles/org.eclipse.swt/Eclipse SWT WebKit/gtk/org/eclipse/swt/browser/DisableWebKitBrowserSearch.java

@@ -0,0 +1,10 @@
+package org.eclipse.swt.browser;
+
+public class DisableWebKitBrowserSearch {
+
+	public static void disableSearch(Browser browser) {
+		if (browser.webBrowser instanceof WebKit wkb) {
+			wkb.disableSearch = true;
+		}
+	}
+}

bundles/org.eclipse.swt/Eclipse SWT WebKit/gtk/org/eclipse/swt/browser/WebKit.java

@@ -101,6 +101,8 @@ class WebKit extends WebBrowser {
 	private Point searchShellLocation;
 	private Shell searchShell;
 	private String searchText;
+	boolean enableSearch;
+
 
 	boolean firstLoad = true;
 	static boolean FirstCreate = true;
@@ -795,7 +797,7 @@ public void create (Composite parent, int style) {
 				break;
 			}
 			case SWT.KeyDown: {
-				if (!disableBrowserSearch && event.keyCode == 'f' && (event.stateMask & SWT.CTRL) == SWT.CTRL) {
+				if (!disableBrowserSearch && enableSearch && event.keyCode == 'f' && (event.stateMask & SWT.CTRL) == SWT.CTRL) {
 					openSearchDialog();
 				}
 				break;

bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/SWT.java

@@ -1558,6 +1558,7 @@ public class SWT {
 	 * <p><b>Used By:</b></p>
 	 * <ul>
 	 * <li><code>Text</code></li>
+	 * <li><code>Browser</code> (WebKit and GTK only)</li>
 	 * </ul>
 	 *
 	 * @since 3.3