--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/visualizer/Filter/src/com/sun/hotspot/igv/filter/CustomFilter.java	Tue Feb 07 22:41:09 2012 +0100
@@ -0,0 +1,138 @@
+/*
+ * Copyright (c) 1998, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package com.sun.hotspot.igv.filter;
+
+import com.sun.hotspot.igv.graph.Diagram;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import javax.script.*;
+import org.openide.cookies.OpenCookie;
+import org.openide.filesystems.FileObject;
+import org.openide.filesystems.FileUtil;
+import org.openide.util.Exceptions;
+
+/**
+ *
+ * @author Thomas Wuerthinger
+ */
+public class CustomFilter extends AbstractFilter {
+
+    public static final String JAVASCRIPT_HELPER_ID = "JavaScriptHelper";
+    private String code;
+    private String name;
+
+    public CustomFilter(String name, String code) {
+        this.name = name;
+        this.code = code;
+        getProperties().setProperty("name", name);
+    }
+
+    @Override
+    public String getName() {
+        return name;
+    }
+
+    public String getCode() {
+        return code;
+    }
+
+    public void setName(String s) {
+        name = s;
+        fireChangedEvent();
+    }
+
+    public void setCode(String s) {
+        code = s;
+        fireChangedEvent();
+    }
+
+    @Override
+    public OpenCookie getEditor() {
+        return new OpenCookie() {
+
+            @Override
+            public void open() {
+                openInEditor();
+            }
+        };
+    }
+
+    public boolean openInEditor() {
+        EditFilterDialog dialog = new EditFilterDialog(CustomFilter.this);
+        dialog.setVisible(true);
+        boolean result = dialog.wasAccepted();
+        this.getChangedEvent().fire();
+        return result;
+    }
+
+    @Override
+    public String toString() {
+        return getName();
+    }
+
+    private static String getJsHelperText() {
+        InputStream is = null;
+        StringBuilder sb = new StringBuilder("importPackage(Packages.com.sun.hotspot.igv.filter);importPackage(Packages.com.sun.hotspot.igv.graph);importPackage(Packages.com.sun.hotspot.igv.data);importPackage(Packages.com.sun.hotspot.igv.util);importPackage(java.awt);");
+        try {
+            FileObject fo = FileUtil.getConfigRoot().getFileObject(JAVASCRIPT_HELPER_ID);
+            is = fo.getInputStream();
+            BufferedReader r = new BufferedReader(new InputStreamReader(is));
+            String s;
+            while ((s = r.readLine()) != null) {
+                sb.append(s);
+                sb.append("\n");
+            }
+
+        } catch (IOException ex) {
+            Logger.getLogger("global").log(Level.SEVERE, null, ex);
+        } finally {
+            try {
+                is.close();
+            } catch (IOException ex) {
+                Exceptions.printStackTrace(ex);
+            }
+        }
+        return sb.toString();
+    }
+
+    @Override
+    public void apply(Diagram d) {
+        try {
+            ScriptEngineManager sem = new ScriptEngineManager();
+            ScriptEngine e = sem.getEngineByName("ECMAScript");
+            e.eval(getJsHelperText());
+            Bindings b = e.getContext().getBindings(ScriptContext.ENGINE_SCOPE);
+            b.put("graph", d);
+            b.put("IO", System.out);
+            e.eval(code, b);
+        } catch (ScriptException ex) {
+            Exceptions.printStackTrace(ex);
+        }
+    }
+}