/*******************************************************************************
* Copyright (c) 2010 Ericsson and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Ericsson - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.dsf.gdb.internal.tracepointactions;
import java.io.ByteArrayOutputStream;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.Iterator;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.eclipse.cdt.dsf.gdb.internal.GdbPlugin;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.helpers.DefaultHandler;
/**
* @since 3.0
*/
public class TracepointActionManager {
private static final String TRACEPOINT_ACTION_DATA = "TracepointActionManager.actionData"; //$NON-NLS-1$
private static final TracepointActionManager fTracepointActionManager = new TracepointActionManager();
// We need a delimiter that the user won't type directly.
// Bug 346215
public static final String TRACEPOINT_ACTION_DELIMITER = "%_#"; //$NON-NLS-1$
private ArrayList<ITracepointAction> tracepointActions = null;
private TracepointActionManager() {
}
public static TracepointActionManager getInstance() {
return fTracepointActionManager;
}
public void addAction(ITracepointAction action) {
getActions().add(action);
}
public void deleteAction(ITracepointAction action) {
getActions().remove(action);
}
public ITracepointAction findAction(String name) {
for (ITracepointAction action : getActions()) {
if (action.getName().equals(name)) {
return action;
}
}
return null;
}
public ArrayList<ITracepointAction> getActions() {
if (tracepointActions == null) {
tracepointActions = new ArrayList<ITracepointAction>();
loadActionData();
}
return tracepointActions;
}
private void loadActionData() {
String actionData = GdbPlugin.getDefault().getPluginPreferences().getString(TRACEPOINT_ACTION_DATA);
if (actionData == null || actionData.length() == 0)
return;
Element root = null;
DocumentBuilder parser;
try {
parser = DocumentBuilderFactory.newInstance().newDocumentBuilder();
parser.setErrorHandler(new DefaultHandler());
root = parser.parse(new InputSource(new StringReader(actionData))).getDocumentElement();
NodeList nodeList = root.getChildNodes();
int entryCount = nodeList.getLength();
for (int i = 0; i < entryCount; i++) {
Node node = nodeList.item(i);
short type = node.getNodeType();
if (type == Node.ELEMENT_NODE) {
Element subElement = (Element) node;
String nodeName = subElement.getNodeName();
if (nodeName.equalsIgnoreCase("actionEntry")) { //$NON-NLS-1$
String name = subElement.getAttribute("name"); //$NON-NLS-1$
if (name == null)
throw new Exception();
String value = subElement.getAttribute("value"); //$NON-NLS-1$
if (value == null)
throw new Exception();
String className = subElement.getAttribute("class"); //$NON-NLS-1$
if (className == null)
throw new Exception();
ITracepointAction action = (ITracepointAction)Class.forName(className).newInstance();
action.setName(name);
action.initializeFromMemento(value);
addAction(action);
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
public String makeUniqueActionName(String defaultName) {
String result = defaultName;
ITracepointAction action = findAction(defaultName);
int actionCount = 1;
while (action != null) {
result = defaultName + "(" + actionCount + ")"; //$NON-NLS-1$ //$NON-NLS-2$
action = findAction(result);
actionCount++;
}
return result;
}
public void revertActionData() {
tracepointActions = null;
}
public void saveActionData() {
String actionData = new String(""); //$NON-NLS-1$
DocumentBuilderFactory dfactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = null;
try {
docBuilder = dfactory.newDocumentBuilder();
Document doc = docBuilder.newDocument();
Element rootElement = doc.createElement("tracepointActionData"); //$NON-NLS-1$
doc.appendChild(rootElement);
for (Iterator<ITracepointAction> iter = getActions().iterator(); iter.hasNext();) {
ITracepointAction action = iter.next();
Element element = doc.createElement("actionEntry"); //$NON-NLS-1$
element.setAttribute("name", action.getName()); //$NON-NLS-1$
element.setAttribute("class", action.getClass().getName()); //$NON-NLS-1$
element.setAttribute("value", action.getMemento()); //$NON-NLS-1$
rootElement.appendChild(element);
}
ByteArrayOutputStream s = new ByteArrayOutputStream();
TransformerFactory factory = TransformerFactory.newInstance();
Transformer transformer = factory.newTransformer();
transformer.setOutputProperty(OutputKeys.METHOD, "xml"); //$NON-NLS-1$
transformer.setOutputProperty(OutputKeys.INDENT, "yes"); //$NON-NLS-1$
DOMSource source = new DOMSource(doc);
StreamResult outputTarget = new StreamResult(s);
transformer.transform(source, outputTarget);
actionData = s.toString("UTF8"); //$NON-NLS-1$
} catch (Exception e) {
e.printStackTrace();
}
GdbPlugin.getDefault().getPluginPreferences().setValue(TRACEPOINT_ACTION_DATA, actionData);
GdbPlugin.getDefault().savePluginPreferences();
}
}