| /* |
| |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with |
| the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| |
| */ |
| package org.apache.batik.swing.svg; |
| |
| import java.io.InterruptedIOException; |
| import java.util.Collections; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| import org.apache.batik.bridge.DocumentLoader; |
| import org.apache.batik.util.EventDispatcher; |
| import org.apache.batik.util.EventDispatcher.Dispatcher; |
| import org.apache.batik.util.HaltingThread; |
| |
| import org.w3c.dom.svg.SVGDocument; |
| |
| /** |
| * This class represents an object which loads asynchroneaously a SVG document. |
| * |
| * @author <a href="mailto:stephane@hillion.org">Stephane Hillion</a> |
| * @version $Id$ |
| */ |
| public class SVGDocumentLoader extends HaltingThread { |
| |
| /** |
| * The URL of the document, |
| */ |
| protected String url; |
| |
| /** |
| * The document loader. |
| */ |
| protected DocumentLoader loader; |
| |
| /** |
| * The exception thrown. |
| */ |
| protected Exception exception; |
| |
| /** |
| * The listeners. |
| */ |
| protected List listeners = Collections.synchronizedList(new LinkedList()); |
| |
| /** |
| * Creates a new SVGDocumentLoader. |
| * @param u The URL of the document. |
| * @param l The document loader to use |
| */ |
| public SVGDocumentLoader(String u, DocumentLoader l) { |
| url = u; |
| loader = l; |
| } |
| |
| /** |
| * Runs this loader. |
| */ |
| public void run() { |
| SVGDocumentLoaderEvent evt; |
| evt = new SVGDocumentLoaderEvent(this, null); |
| try { |
| fireEvent(startedDispatcher, evt); |
| if (isHalted()) { |
| fireEvent(cancelledDispatcher, evt); |
| return; |
| } |
| |
| SVGDocument svgDocument = (SVGDocument)loader.loadDocument(url); |
| |
| if (isHalted()) { |
| fireEvent(cancelledDispatcher, evt); |
| return; |
| } |
| |
| evt = new SVGDocumentLoaderEvent(this, svgDocument); |
| fireEvent(completedDispatcher, evt); |
| } catch (InterruptedIOException e) { |
| fireEvent(cancelledDispatcher, evt); |
| } catch (Exception e) { |
| exception = e; |
| fireEvent(failedDispatcher, evt); |
| } catch (ThreadDeath td) { |
| exception = new Exception(td.getMessage()); |
| fireEvent(failedDispatcher, evt); |
| throw td; |
| } catch (Throwable t) { |
| t.printStackTrace(); |
| exception = new Exception(t.getMessage()); |
| fireEvent(failedDispatcher, evt); |
| } |
| } |
| |
| /** |
| * Returns the exception, if any occured. |
| */ |
| public Exception getException() { |
| return exception; |
| } |
| |
| /** |
| * Adds a SVGDocumentLoaderListener to this SVGDocumentLoader. |
| */ |
| public void addSVGDocumentLoaderListener(SVGDocumentLoaderListener l) { |
| listeners.add(l); |
| } |
| |
| /** |
| * Removes a SVGDocumentLoaderListener from this SVGDocumentLoader. |
| */ |
| public void removeSVGDocumentLoaderListener(SVGDocumentLoaderListener l) { |
| listeners.remove(l); |
| } |
| |
| public void fireEvent(Dispatcher dispatcher, Object event) { |
| EventDispatcher.fireEvent(dispatcher, listeners, event, true); |
| } |
| |
| static Dispatcher startedDispatcher = new Dispatcher() { |
| public void dispatch(Object listener, |
| Object event) { |
| ((SVGDocumentLoaderListener)listener).documentLoadingStarted |
| ((SVGDocumentLoaderEvent)event); |
| } |
| }; |
| |
| static Dispatcher completedDispatcher = new Dispatcher() { |
| public void dispatch(Object listener, |
| Object event) { |
| ((SVGDocumentLoaderListener)listener).documentLoadingCompleted |
| ((SVGDocumentLoaderEvent)event); |
| } |
| }; |
| |
| static Dispatcher cancelledDispatcher = new Dispatcher() { |
| public void dispatch(Object listener, |
| Object event) { |
| ((SVGDocumentLoaderListener)listener).documentLoadingCancelled |
| ((SVGDocumentLoaderEvent)event); |
| } |
| }; |
| |
| static Dispatcher failedDispatcher = new Dispatcher() { |
| public void dispatch(Object listener, |
| Object event) { |
| ((SVGDocumentLoaderListener)listener).documentLoadingFailed |
| ((SVGDocumentLoaderEvent)event); |
| } |
| }; |
| } |