8319192: Remove javax.swing.plaf.synth.SynthLookAndFeel.load(URL url)

Reviewed-by: azvegint, tr

src/java.desktop/share/classes/javax/swing/plaf/synth/SynthLookAndFeel.java

@@ -45,7 +45,6 @@ import java.io.Serial;
 import java.io.Serializable;
 import java.lang.ref.ReferenceQueue;
 import java.lang.ref.WeakReference;
-import java.net.URL;
 import java.text.ParseException;
 import java.util.HashMap;
 import java.util.Locale;
@@ -604,55 +603,7 @@ public class SynthLookAndFeel extends BasicLookAndFeel {
         }
 
         new SynthParser().parse(input, (DefaultSynthStyleFactory) factory,
-                                null, resourceBase, defaultsMap);
-    }
-
-    /**
-     * Loads the set of <code>SynthStyle</code>s that will be used by
-     * this <code>SynthLookAndFeel</code>. Path based resources are resolved
-     * relatively to the specified <code>URL</code> of the style. For example
-     * an <code>Image</code> would be resolved by
-     * <code>new URL(synthFile, path)</code>. Refer to
-     * <a href="doc-files/synthFileFormat.html">Synth File Format</a> for more
-     * information.
-     * <p>
-     * Whilst this API may be safe for loading local resources that are
-     * delivered with a {@code LookAndFeel} or application, and so have an
-     * equal level of trust with application code, using it to load from
-     * remote resources, particularly any which may have a lower level of
-     * trust, is strongly discouraged.
-     * The alternative mechanisms to load styles from an {@code InputStream}
-     * {@linkplain #load(InputStream, Class)}
-     * using resources co-located with the application or by providing a
-     * {@code SynthStyleFactory} to
-     * {@linkplain #setStyleFactory setStyleFactory(SynthStyleFactory)}
-     * are preferred.
-     * Consequently this method is deprecated and will be removed in a future
-     * release.
-     *
-     * @param url the <code>URL</code> to load the set of
-     *     <code>SynthStyle</code> from
-     * @throws ParseException if there is an error in parsing
-     * @throws IllegalArgumentException if synthSet is <code>null</code>
-     * @throws IOException if synthSet cannot be opened as an <code>InputStream</code>
-     * @since 1.6
-     * @deprecated Use {@link #load(InputStream, Class)} or
-     * {@link #setStyleFactory setStyleFactory(SynthStyleFactory)} instead
-     */
-    @Deprecated(since = "21", forRemoval = true)
-    public void load(URL url) throws ParseException, IOException {
-        if (url == null) {
-            throw new IllegalArgumentException(
-                "You must supply a valid Synth set URL");
-        }
-
-        if (defaultsMap == null) {
-            defaultsMap = new HashMap<String, Object>();
-        }
-
-        InputStream input = url.openStream();
-        new SynthParser().parse(input, (DefaultSynthStyleFactory) factory,
-                                url, null, defaultsMap);
+                                resourceBase, defaultsMap);
     }
 
     /**

src/java.desktop/share/classes/javax/swing/plaf/synth/SynthParser.java

@@ -34,7 +34,6 @@ import java.awt.Toolkit;
 import java.io.BufferedInputStream;
 import java.io.IOException;
 import java.io.InputStream;
-import java.net.MalformedURLException;
 import java.net.URL;
 import java.net.URLClassLoader;
 import java.text.ParseException;
@@ -165,11 +164,6 @@ class SynthParser extends DefaultHandler {
      */
     private Map<String,Object> _mapping;
 
-    /**
-     * Based URL used to resolve paths.
-     */
-    private URL _urlResourceBase;
-
     /**
      * Based class used to resolve paths.
      */
@@ -213,26 +207,21 @@ class SynthParser extends DefaultHandler {
      *
      * @param inputStream XML document containing the styles to read
      * @param factory DefaultSynthStyleFactory that new styles are added to
-     * @param urlResourceBase the URL used to resolve any resources, such as Images
      * @param classResourceBase the Class used to resolve any resources, such as Images
      * @param defaultsMap Map that UIDefaults properties are placed in
      */
     public void parse(InputStream inputStream,
                       DefaultSynthStyleFactory factory,
-                      URL urlResourceBase, Class<?> classResourceBase,
+                      Class<?> classResourceBase,
                       Map<String, Object> defaultsMap)
                       throws ParseException, IllegalArgumentException {
-        if (inputStream == null || factory == null ||
-            (urlResourceBase == null && classResourceBase == null)) {
+        if (inputStream == null || factory == null || classResourceBase == null) {
             throw new IllegalArgumentException(
-                "You must supply an InputStream, StyleFactory and Class or URL");
+                "You must supply an InputStream, StyleFactory and Class");
         }
 
-        assert(!(urlResourceBase != null && classResourceBase != null));
-
         _factory = factory;
         _classResourceBase = classResourceBase;
-        _urlResourceBase = urlResourceBase;
         _defaultsMap = defaultsMap;
         try {
             try {
@@ -255,17 +244,7 @@ class SynthParser extends DefaultHandler {
      * Returns the path to a resource.
      */
     private URL getResource(String path) {
-        if (_classResourceBase != null) {
-            return _classResourceBase.getResource(path);
-        } else {
-            try {
-                @SuppressWarnings("deprecation")
-                var result = new URL(_urlResourceBase, path);
-                return result;
-            } catch (MalformedURLException mue) {
-                return null;
-            }
-        }
+        return _classResourceBase.getResource(path);
     }
 
     /**
@@ -294,20 +273,7 @@ class SynthParser extends DefaultHandler {
     private DocumentHandler getHandler() {
         if (_handler == null) {
             _handler = new DocumentHandler();
-            if (_urlResourceBase != null) {
-                // getHandler() is never called before parse() so it is safe
-                // to create a URLClassLoader with _resourceBase.
-                //
-                // getResource(".") is called to ensure we have the directory
-                // containing the resources in the case the resource base is a
-                // .class file.
-                URL[] urls = new URL[] { getResource(".") };
-                ClassLoader parent = Thread.currentThread().getContextClassLoader();
-                ClassLoader urlLoader = new URLClassLoader(urls, parent);
-                _handler.setClassLoader(urlLoader);
-            } else {
-                _handler.setClassLoader(_classResourceBase.getClassLoader());
-            }
+            _handler.setClassLoader(_classResourceBase.getClassLoader());
 
             for (String key : _mapping.keySet()) {
                 _handler.setVariable(key, _mapping.get(key));

src/java.desktop/share/classes/javax/swing/plaf/synth/doc-files/synthFileFormat.html

@@ -53,9 +53,7 @@ div.example {
       necessary to create your own look and feel. A synth file is
       loaded by way of the <A
         HREF="../../../../../javax/swing/plaf/synth/SynthLookAndFeel.html#load(java.io.InputStream,java.lang.Class)">
-      SynthLookAndFeel.load(InputStream, Class)</a> or
-      <a href="../../../../../javax/swing/plaf/synth/SynthLookAndFeel.html#load(java.net.URL)">
-        SynthLookAndFeel.load(URL)</a> methods.
+      SynthLookAndFeel.load(InputStream, Class)</a> method.
       The following example uses the <code>load</code> method to configure
       a <code>SynthLookAndFeel</code> and sets it as the current look
       and feel:
@@ -71,36 +69,6 @@ div.example {
       This example loads the look and feel from an input stream, using
       the specified class as the resource base to resolve paths.
     </p>
-    <p>
-      It is also possible to load a look and feel from an arbitrary URL
-      as in the following example.
-    </p>
-    <div class="example">
-      <pre>
-  SynthLookAndFeel laf = new SynthLookAndFeel();
-  laf.load(new URL("file:///C:/java/synth/laf/laf.xml"));
-  UIManager.setLookAndFeel(laf);
-      </pre>
-    </div>
-    <p>
-      The method <a
-        href="../../../../../javax/swing/plaf/synth/SynthLookAndFeel.html#load(java.net.URL)">
-      SynthLookAndFeel.load(URL)</a> can be used, for instance, to load a look
-      and feel from any of the following:
-    </p>
-    <ul>
-      <li>File, e.g. <code>file:///C:/java/synth/laf/laf.xml</code></li>
-      <li>Web server, e.g. <code>http://host/laf.xml</code></li>
-      <li>JAR file, e.g.
-        <code>jar:file:///C:/synth-laf.jar!/laf.xml</code></li>
-      <li>Remote JAR file, e.g.
-        <code>jar:http://host/synth-laf.jar!/laf.xml</code></li>
-    </ul>
-    <p>Note: Synth's file format allows for the definition of code to be executed.
-       Loading any code from a remote location should be used only
-       with extreme caution from a trusted source over a secure connection.
-       It is strongly discouraged for an application or a LookAndFeel to do so.
-    </p>
     <p>
       While the DTD for synth is specified, the parser is not validating.
       Parsing will fail only if a necessary attribute is not
@@ -880,10 +848,9 @@ div.example {
 	a direction or orientation. If this is not specified the image is
 	used for all directions.</dd>
       <dt><a id="imagePainter.path"><samp>path</samp></a></dt>
-      <dd>Path to the image.  If SynthLookAndFeel.load is
-    passed a Class this will use the Class method getResource (with the
-    Class supplied to the load method). If load is passed a URL this will use the
-    URL constructor URL(context, path) to resolve the path.</dd>
+      <dd>Path to the image.  SynthLookAndFeel.load 
+    will use the Class method getResource (with the
+    Class supplied to the load method) to resolve the path.
       <dt><a id="imagePainter.sourceInsets"><samp>sourceInsets</samp></a></dt>
       <dd>Insets on the source image. This is top, left, bottom, right with
 	each component separated by a space.</dd>