/*******************************************************************************
* Copyright (c) 2009 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
* Zend Technologies
*******************************************************************************/
package org.eclipse.php.internal.debug.core.zend.debugger;
import java.util.Dictionary;
import java.util.Enumeration;
import java.util.Hashtable;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtensionRegistry;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.SafeRunner;
import org.eclipse.debug.core.ILaunch;
import org.eclipse.jface.util.SafeRunnable;
import org.eclipse.php.debug.core.debugger.parameters.IDebugParametersInitializer;
import org.eclipse.php.internal.debug.core.IPHPDebugConstants;
import org.eclipse.php.internal.debug.core.PHPDebugPlugin;
/**
* @author michael
*
*/
public class DebugParametersInitializersRegistry {
private static final String EXTENSION_POINT_NAME = "phpDebugParametersInitializers"; //$NON-NLS-1$
private static final String INITIALIZER_TAG = "initializer"; //$NON-NLS-1$
private static final String ID_ATTRIBUTE = "id"; //$NON-NLS-1$
private static final String LAUNCH_CONFIGURATION_TYPE_ATTRIBUTE = "launchConfigurationType"; //$NON-NLS-1$
private static final String CLASS_ATTRIBUTE = "class"; //$NON-NLS-1$
private static final String HANDLER_ATTRIBUTE = "handler"; //$NON-NLS-1$
private static final String MODE_ATTRIBUTE = "mode"; //$NON-NLS-1$
private static final String RUN = "run"; //$NON-NLS-1$
private static final String DEBUG = "debug"; //$NON-NLS-1$
private static final String PROFILE = "profile"; //$NON-NLS-1$
/** Debug parameters initializers stored by ID */
private Dictionary runInitializers = new Hashtable();
private Dictionary debugInitializers = new Hashtable();
private Dictionary profileInitializers = new Hashtable();
/** Instance of this registry */
private static DebugParametersInitializersRegistry instance = null;
private DebugParametersInitializersRegistry() {
IExtensionRegistry registry = Platform.getExtensionRegistry();
IConfigurationElement[] elements = registry
.getConfigurationElementsFor(PHPDebugPlugin.getID(),
EXTENSION_POINT_NAME);
for (int i = 0; i < elements.length; i++) {
final IConfigurationElement element = elements[i];
if (INITIALIZER_TAG.equals(element.getName())) {
if (RUN.equals(element.getAttribute(MODE_ATTRIBUTE))) {
runInitializers.put(element.getAttribute(ID_ATTRIBUTE),
new DebugParametersInitializerFactory(element));
} else if (PROFILE.equals(element.getAttribute(MODE_ATTRIBUTE))) {
profileInitializers.put(element.getAttribute(ID_ATTRIBUTE),
new DebugParametersInitializerFactory(element));
} else {
debugInitializers.put(element.getAttribute(ID_ATTRIBUTE),
new DebugParametersInitializerFactory(element));
}
}
}
}
private static DebugParametersInitializersRegistry getInstance() {
if (instance == null) {
instance = new DebugParametersInitializersRegistry();
}
return instance;
}
private Dictionary getInitializersFactories(String mode) {
if (RUN.equals(mode)) {
return runInitializers;
}
if (PROFILE.equals(mode)) {
return profileInitializers;
}
return debugInitializers;
}
/**
* Return debug parameters initializer according to its ID. The returned
* IDebugParametersInitializer is always a new instance.
*
* @param id
* The debug parameters initializer ID
* @return A new instance of an IDebugParametersInitializer
*/
public static IDebugParametersInitializer getParametersInitializer(String id)
throws Exception {
DebugParametersInitializerFactory initializerFactory = (DebugParametersInitializerFactory) getInstance()
.getInitializersFactories(RUN).get(id);
if (initializerFactory == null) {
initializerFactory = (DebugParametersInitializerFactory) getInstance()
.getInitializersFactories(PROFILE).get(id);
}
if (initializerFactory == null) {
initializerFactory = (DebugParametersInitializerFactory) getInstance()
.getInitializersFactories(DEBUG).get(id);
}
if (initializerFactory != null) {
return initializerFactory.createParametersInitializer();
}
return null;
}
/**
* Returns the currently configured IDebugParametersInitializer. The
* returned IDebugParametersInitializer is always a new instance.
*
* @return A new instance of the current IDebugParametersInitializer
* (according to the preferences).
*/
public static IDebugParametersInitializer getCurrentDebugParametersInitializer() {
try {
String id = PHPDebugPlugin
.getDefault()
.getPluginPreferences()
.getString(
IPHPDebugConstants.PHP_DEBUG_PARAMETERS_INITIALIZER);
return getParametersInitializer(id);
} catch (Exception e) {
PHPDebugPlugin.log(e);
}
return null;
}
/**
* Return best matching debug parameters initializer according the the
* launch The returned IDebugParametersInitializer is always a new instance.
*
* @param launch
* @return A new instance of a best match IDebugParametersInitializer
*/
public static IDebugParametersInitializer getBestMatchDebugParametersInitializer(
ILaunch launch) {
try {
Dictionary factories = getInstance().getInitializersFactories(
launch.getLaunchMode());
// 1st try to get the one with matching configuration type
for (Enumeration e = factories.elements(); e.hasMoreElements();) {
DebugParametersInitializerFactory initializerFactory = (DebugParametersInitializerFactory) e
.nextElement();
String configurationTypeId = initializerFactory.element
.getAttribute(LAUNCH_CONFIGURATION_TYPE_ATTRIBUTE);
if (configurationTypeId != null
&& !"".equals(configurationTypeId) //$NON-NLS-1$
&& configurationTypeId.equals(launch
.getLaunchConfiguration().getType()
.getIdentifier())) {
return initializerFactory.createParametersInitializer();
}
}
// Then if not found try to get with empty configuration type and
// not a default one
for (Enumeration e = factories.elements(); e.hasMoreElements();) {
DebugParametersInitializerFactory initializerFactory = (DebugParametersInitializerFactory) e
.nextElement();
String configurationTypeId = initializerFactory.element
.getAttribute(LAUNCH_CONFIGURATION_TYPE_ATTRIBUTE);
if ((configurationTypeId == null || "" //$NON-NLS-1$
.equals(configurationTypeId))
&& !PHPDebugPlugin.getID().equals(
initializerFactory.element
.getNamespaceIdentifier())) {
return initializerFactory.createParametersInitializer();
}
}
// Last, if nothing found get the default
for (Enumeration e = factories.elements(); e.hasMoreElements();) {
DebugParametersInitializerFactory initializerFactory = (DebugParametersInitializerFactory) e
.nextElement();
if (PHPDebugPlugin.getID().equals(
initializerFactory.element.getNamespaceIdentifier())) {
return initializerFactory.createParametersInitializer();
}
}
} catch (Exception e) {
PHPDebugPlugin.log(e);
}
return getCurrentDebugParametersInitializer();
}
/**
* Instantiation proxy of the initializer object
*/
class DebugParametersInitializerFactory {
private IConfigurationElement element;
private IDebugParametersInitializer parametersInitializer;
public DebugParametersInitializerFactory(IConfigurationElement element) {
this.element = element;
}
public IDebugParametersInitializer createParametersInitializer() {
SafeRunner
.run(new SafeRunnable(
"Error creation extension for extension-point org.eclipse.php.internal.debug.core.phpDebugParametersInitializers") { //$NON-NLS-1$
public void run() throws Exception {
parametersInitializer = (IDebugParametersInitializer) element
.createExecutableExtension(CLASS_ATTRIBUTE);
}
});
parametersInitializer.setDebugHandler(element
.getAttribute(HANDLER_ATTRIBUTE));
return parametersInitializer;
}
}
}