archive/net.sourceforge.phpeclipse.monitor.core/src/net/sourceforge/phpdt/monitor/core/internal/ContentFilter.java

   1 /**********************************************************************
   2  * Copyright (c) 2003 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *    IBM - Initial API and implementation
  10  **********************************************************************/
  11 package net.sourceforge.phpdt.monitor.core.internal;
  12
  13 import java.io.IOException;
  14
  15 import net.sourceforge.phpdt.monitor.core.IContentFilter;
  16 import net.sourceforge.phpdt.monitor.core.IContentFilterDelegate;
  17 import net.sourceforge.phpdt.monitor.core.IRequest;
  18
  19 import org.eclipse.core.runtime.IConfigurationElement;
  20 /**
  21  *
  22  */
  23 public class ContentFilter implements IContentFilter {
  24         protected IConfigurationElement element;
  25         protected IContentFilterDelegate delegate;
  26
  27         protected ContentFilter(IConfigurationElement element) {
  28                 this.element = element;
  29         }
  30
  31         public String getId() {
  32                 return element.getAttribute("id");
  33         }
  34
  35         public int getOrder() {
  36                 try {
  37                         return Integer.parseInt(element.getAttribute("order"));
  38                 } catch (Exception e) {
  39                         return 0;
  40                 }
  41         }
  42
  43         public String getName() {
  44                 return element.getAttribute("name");
  45         }
  46
  47         public byte[] filter(IRequest request, boolean isRequest, byte[] b) throws IOException {
  48                 if (delegate == null) {
  49                         try {
  50                                 delegate = (IContentFilterDelegate) element.createExecutableExtension("class");
  51                         } catch (Exception e) {
  52                                 Trace.trace(Trace.SEVERE, "Could not create content filter delegate: " + getId(), e);
  53                                 return new byte[0];
  54                         }
  55                 }
  56                 return delegate.filter(request, isRequest, b);
  57         }
  58 }