/*******************************************************************************
* Copyright (c) 2004, 2012 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.debug.core.logicalstructures;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.StringTokenizer;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtensionPoint;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.preferences.IEclipsePreferences;
import org.eclipse.core.runtime.preferences.IEclipsePreferences.IPreferenceChangeListener;
import org.eclipse.core.runtime.preferences.IEclipsePreferences.PreferenceChangeEvent;
import org.eclipse.core.runtime.preferences.InstanceScope;
import org.eclipse.debug.core.DebugException;
import org.eclipse.debug.core.ILogicalStructureProvider;
import org.eclipse.debug.core.ILogicalStructureType;
import org.eclipse.debug.core.model.IValue;
import org.eclipse.jdt.debug.core.IJavaClassType;
import org.eclipse.jdt.debug.core.IJavaInterfaceType;
import org.eclipse.jdt.debug.core.IJavaObject;
import org.eclipse.jdt.debug.core.IJavaType;
import org.eclipse.jdt.debug.core.JDIDebugModel;
import org.eclipse.jdt.internal.debug.core.JDIDebugPlugin;
import org.osgi.service.prefs.BackingStoreException;
public class JavaLogicalStructures implements ILogicalStructureProvider {
// preference values
static final char IS_SUBTYPE_TRUE = 'T';
static final char IS_SUBTYPE_FALSE = 'F';
/**
* The list of java logical structures.
*/
private static Map<String, List<JavaLogicalStructure>> fJavaLogicalStructureMap;
/**
* The list of java logical structures in this Eclipse install.
*/
private static List<JavaLogicalStructure> fPluginContributedJavaLogicalStructures;
/**
* The list of java logical structures defined by the user.
*/
private static List<JavaLogicalStructure> fUserDefinedJavaLogicalStructures;
/**
* The list of java logical structures listeners.
*/
private static Set<IJavaStructuresListener> fListeners = new HashSet<IJavaStructuresListener>();
/**
* Preference key for the list of user defined Java logical structures
*
* @since 3.1
*/
private static final String PREF_JAVA_LOGICAL_STRUCTURES = JDIDebugModel
.getPluginIdentifier() + ".PREF_JAVA_LOGICAL_STRUCTURES"; //$NON-NLS-1$
/**
* Updates user defined logical structures if the preference changes
*/
static class PreferenceListener implements IPreferenceChangeListener {
/* (non-Javadoc)
* @see org.eclipse.core.runtime.preferences.IEclipsePreferences.IPreferenceChangeListener#preferenceChange(org.eclipse.core.runtime.preferences.IEclipsePreferences.PreferenceChangeEvent)
*/
public void preferenceChange(PreferenceChangeEvent event) {
if (PREF_JAVA_LOGICAL_STRUCTURES.equals(event.getKey())) {
initUserDefinedJavaLogicalStructures();
initJavaLogicalStructureMap();
Iterator<IJavaStructuresListener> iter = fListeners.iterator();
while (iter.hasNext()) {
iter.next().logicalStructuresChanged();
}
}
}
}
/**
* Get the logical structure from the extension point and the preference
* store, and initialize the map.
*/
static {
initPluginContributedJavaLogicalStructure();
initUserDefinedJavaLogicalStructures();
initJavaLogicalStructureMap();
IEclipsePreferences prefs = InstanceScope.INSTANCE.getNode(JDIDebugPlugin.getUniqueIdentifier());
if(prefs != null) {
prefs.addPreferenceChangeListener(new PreferenceListener());
}
}
private static void initJavaLogicalStructureMap() {
fJavaLogicalStructureMap = new HashMap<String, List<JavaLogicalStructure>>();
addAllLogicalStructures(fPluginContributedJavaLogicalStructures);
addAllLogicalStructures(fUserDefinedJavaLogicalStructures);
}
/**
* @param pluginContributedJavaLogicalStructures
*/
private static void addAllLogicalStructures(
List<JavaLogicalStructure> pluginContributedJavaLogicalStructures) {
for (Iterator<JavaLogicalStructure> iter = pluginContributedJavaLogicalStructures.iterator(); iter
.hasNext();) {
addLogicalStructure(iter.next());
}
}
/**
* @param structure
*/
private static void addLogicalStructure(JavaLogicalStructure structure) {
String typeName = structure.getQualifiedTypeName();
List<JavaLogicalStructure> logicalStructure = fJavaLogicalStructureMap.get(typeName);
if (logicalStructure == null) {
logicalStructure = new ArrayList<JavaLogicalStructure>();
fJavaLogicalStructureMap.put(typeName, logicalStructure);
}
logicalStructure.add(structure);
}
/**
* Get the configuration elements for the extension point.
*/
private static void initPluginContributedJavaLogicalStructure() {
fPluginContributedJavaLogicalStructures = new ArrayList<JavaLogicalStructure>();
IExtensionPoint extensionPoint = Platform.getExtensionRegistry()
.getExtensionPoint(JDIDebugPlugin.getUniqueIdentifier(),
JDIDebugPlugin.EXTENSION_POINT_JAVA_LOGICAL_STRUCTURES);
IConfigurationElement[] javaLogicalStructureElements = extensionPoint
.getConfigurationElements();
for (IConfigurationElement javaLogicalStructureElement : javaLogicalStructureElements) {
try {
fPluginContributedJavaLogicalStructures
.add(new JavaLogicalStructure(
javaLogicalStructureElement));
} catch (CoreException e) {
JDIDebugPlugin.log(e);
}
}
}
/**
* Get the user defined logical structures (from the preference store).
*/
private static void initUserDefinedJavaLogicalStructures() {
fUserDefinedJavaLogicalStructures = new ArrayList<JavaLogicalStructure>();
String logicalStructuresString = Platform.getPreferencesService().getString(
JDIDebugPlugin.getUniqueIdentifier(),
PREF_JAVA_LOGICAL_STRUCTURES,
"", //$NON-NLS-1$
null);
StringTokenizer tokenizer = new StringTokenizer(
logicalStructuresString, "\0", true); //$NON-NLS-1$
while (tokenizer.hasMoreTokens()) {
String type = tokenizer.nextToken();
tokenizer.nextToken();
String description = tokenizer.nextToken();
tokenizer.nextToken();
String isSubtypeValue = tokenizer.nextToken();
boolean isSubtype = isSubtypeValue.charAt(0) == IS_SUBTYPE_TRUE;
tokenizer.nextToken();
String value = tokenizer.nextToken();
if (value.charAt(0) == '\0') {
value = null;
} else {
tokenizer.nextToken();
}
String variablesCounterValue = tokenizer.nextToken();
int variablesCounter = Integer.parseInt(variablesCounterValue);
tokenizer.nextToken();
String[][] variables = new String[variablesCounter][2];
for (int i = 0; i < variablesCounter; i++) {
variables[i][0] = tokenizer.nextToken();
tokenizer.nextToken();
variables[i][1] = tokenizer.nextToken();
tokenizer.nextToken();
}
fUserDefinedJavaLogicalStructures.add(new JavaLogicalStructure(
type, isSubtype, value, description, variables));
}
}
/**
* Save the user defined logical structures in the preference store.
*/
public static void saveUserDefinedJavaLogicalStructures() {
StringBuffer logicalStructuresString = new StringBuffer();
for (Iterator<JavaLogicalStructure> iter = fUserDefinedJavaLogicalStructures.iterator(); iter
.hasNext();) {
JavaLogicalStructure logicalStructure = iter
.next();
logicalStructuresString.append(
logicalStructure.getQualifiedTypeName()).append('\0');
logicalStructuresString.append(logicalStructure.getDescription())
.append('\0');
logicalStructuresString.append(
logicalStructure.isSubtypes() ? IS_SUBTYPE_TRUE
: IS_SUBTYPE_FALSE).append('\0');
String value = logicalStructure.getValue();
if (value != null) {
logicalStructuresString.append(value);
}
logicalStructuresString.append('\0');
String[][] variables = logicalStructure.getVariables();
logicalStructuresString.append(variables.length).append('\0');
for (String[] strings : variables) {
logicalStructuresString.append(strings[0]).append('\0');
logicalStructuresString.append(strings[1]).append('\0');
}
}
IEclipsePreferences node = InstanceScope.INSTANCE.getNode(JDIDebugPlugin.getUniqueIdentifier());
if(node != null) {
node.put(PREF_JAVA_LOGICAL_STRUCTURES, logicalStructuresString.toString());
try {
node.flush();
} catch (BackingStoreException e) {
JDIDebugPlugin.log(e);
}
}
}
/**
* Return all the defined logical structures.
*/
public static JavaLogicalStructure[] getJavaLogicalStructures() {
JavaLogicalStructure[] logicalStructures = new JavaLogicalStructure[fPluginContributedJavaLogicalStructures
.size() + fUserDefinedJavaLogicalStructures.size()];
int i = 0;
for (Iterator<JavaLogicalStructure> iter = fPluginContributedJavaLogicalStructures.iterator(); iter
.hasNext();) {
logicalStructures[i++] = iter.next();
}
for (Iterator<JavaLogicalStructure> iter = fUserDefinedJavaLogicalStructures.iterator(); iter
.hasNext();) {
logicalStructures[i++] = iter.next();
}
return logicalStructures;
}
/**
* Set the user defined logical structures.
*/
public static void setUserDefinedJavaLogicalStructures(
JavaLogicalStructure[] logicalStructures) {
fUserDefinedJavaLogicalStructures = Arrays.asList(logicalStructures);
saveUserDefinedJavaLogicalStructures();
}
public static void addStructuresListener(IJavaStructuresListener listener) {
fListeners.add(listener);
}
public static void removeStructuresListener(IJavaStructuresListener listener) {
fListeners.remove(listener);
}
public ILogicalStructureType[] getLogicalStructureTypes(IValue value) {
if (!(value instanceof IJavaObject)) {
return new ILogicalStructureType[0];
}
IJavaObject javaValue = (IJavaObject) value;
List<JavaLogicalStructure> logicalStructures = new ArrayList<JavaLogicalStructure>();
try {
IJavaType type = javaValue.getJavaType();
if (!(type instanceof IJavaClassType)) {
return new ILogicalStructureType[0];
}
IJavaClassType classType = (IJavaClassType) type;
List<JavaLogicalStructure> list = fJavaLogicalStructureMap
.get(classType.getName());
if (list != null) {
logicalStructures.addAll(list);
}
IJavaClassType superClass = classType.getSuperclass();
while (superClass != null) {
addIfIsSubtype(logicalStructures,
fJavaLogicalStructureMap.get(superClass
.getName()));
superClass = superClass.getSuperclass();
}
IJavaInterfaceType[] superInterfaces = classType.getAllInterfaces();
for (IJavaInterfaceType superInterface : superInterfaces) {
addIfIsSubtype(logicalStructures,
fJavaLogicalStructureMap.get(superInterface
.getName()));
}
} catch (DebugException e) {
JDIDebugPlugin.log(e);
return new ILogicalStructureType[0];
}
return logicalStructures
.toArray(new ILogicalStructureType[logicalStructures.size()]);
}
private void addIfIsSubtype(List<JavaLogicalStructure> logicalStructures, List<JavaLogicalStructure> list) {
if (list == null) {
return;
}
for(JavaLogicalStructure jls : list) {
if (jls.isSubtypes()) {
logicalStructures.add(jls);
}
}
}
}