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Java example source code file (CustomFilter.java)
The CustomFilter.java Java example source code/* * 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.Collection; import java.util.logging.Level; import java.util.logging.Logger; import org.openide.DialogDisplayer; import org.openide.NotifyDescriptor; import org.openide.cookies.OpenCookie; import org.openide.filesystems.Repository; import org.openide.filesystems.FileSystem; import org.openide.filesystems.FileObject; import org.openide.util.Exceptions; import org.openide.util.Lookup; /** * * @author Thomas Wuerthinger */ public class CustomFilter extends AbstractFilter { public static final String JAVASCRIPT_HELPER_ID = "JavaScriptHelper"; private static ScriptEngineAbstraction engine; private String code; private String name; public CustomFilter(String name, String code) { this.name = name; this.code = code; getProperties().setProperty("name", name); } 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() { public void open() { openInEditor(); } }; } public boolean openInEditor() { EditFilterDialog dialog = new EditFilterDialog(CustomFilter.this); dialog.setVisible(true); return dialog.wasAccepted(); } @Override public String toString() { return getName(); } public static ScriptEngineAbstraction getEngine() { if (engine == null) { ScriptEngineAbstraction chosen = null; try { Collection<? extends ScriptEngineAbstraction> list = Lookup.getDefault().lookupAll(ScriptEngineAbstraction.class); for (ScriptEngineAbstraction s : list) { if (s.initialize(getJsHelperText())) { if (chosen == null || !(chosen instanceof JavaSE6ScriptEngine)) { chosen = s; } } } } catch (NoClassDefFoundError ncdfe) { Logger.getLogger("global").log(Level.SEVERE, null, ncdfe); } if (chosen == null) { NotifyDescriptor message = new NotifyDescriptor.Message("Could not find a scripting engine. Please make sure that the Rhino scripting engine is available. Otherwise filter cannot be used.", NotifyDescriptor.ERROR_MESSAGE); DialogDisplayer.getDefault().notifyLater(message); chosen = new NullScriptEngine(); } engine = chosen; } return engine; } 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 { FileSystem fs = Repository.getDefault().getDefaultFileSystem(); FileObject fo = fs.getRoot().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(); } public void apply(Diagram d) { getEngine().execute(d, code); } } Other Java examples (source code examples)Here is a short list of links related to this Java CustomFilter.java source code file: |
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