diff options
Diffstat (limited to 'core/org.eclipse.papyrus.core/src/org/eclipse/papyrus/core/listenerservice/ModelListenerManager.java')
| -rw-r--r-- | core/org.eclipse.papyrus.core/src/org/eclipse/papyrus/core/listenerservice/ModelListenerManager.java | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/core/org.eclipse.papyrus.core/src/org/eclipse/papyrus/core/listenerservice/ModelListenerManager.java b/core/org.eclipse.papyrus.core/src/org/eclipse/papyrus/core/listenerservice/ModelListenerManager.java new file mode 100644 index 00000000000..de22c5c9d01 --- /dev/null +++ b/core/org.eclipse.papyrus.core/src/org/eclipse/papyrus/core/listenerservice/ModelListenerManager.java @@ -0,0 +1,127 @@ +/*******************************************************************************
+ * Copyright (c) 2008 CEA LIST.
+ * 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:
+ * Patrick Tessier (CEA LIST) Patrick.tessier@cea.fr - Initial API and implementation
+ *******************************************************************************/
+package org.eclipse.papyrus.core.listenerservice;
+
+import java.util.Enumeration;
+import java.util.Hashtable;
+
+import org.eclipse.core.runtime.IConfigurationElement;
+import org.eclipse.core.runtime.Platform;
+import org.eclipse.emf.common.notify.Notification;
+import org.eclipse.emf.ecore.util.EContentAdapter;
+import org.osgi.framework.Bundle;
+
+/**
+ * This class is a manager that loads all listeners of the uml model
+ *
+ */
+
+public class ModelListenerManager extends EContentAdapter {
+
+ // list of of listener
+ private Hashtable listenerRegistry;
+
+ // extension point ID
+ private String MODELLISTENERID_EXTENSION_ID = "papyrus.backbone.modellistener";
+
+ private String NAME_ID = "name";
+
+ private String REALIZATION_ID = "realization";
+
+ /**
+ * Constructor
+ */
+ public ModelListenerManager() {
+ super();
+ // init stack
+ listenerRegistry = new Hashtable();
+ initializeListenerList();
+ }
+
+ /**
+ * Load all listeners of the model
+ */
+ private void initializeListenerList() {
+ // Reading data from plugins
+ IConfigurationElement[] configElements = Platform.getExtensionRegistry().getConfigurationElementsFor(MODELLISTENERID_EXTENSION_ID);
+ for (int i = 0; i < configElements.length; i++) {
+ inializeOneRule(configElements[i]);
+ }
+
+ }
+
+ /**
+ * Load one listener
+ *
+ * @param element
+ * the extension point
+ */
+ private void inializeOneRule(IConfigurationElement element) {
+ String listenerName = element.getAttribute(NAME_ID);
+ try {
+ IPapyrusListener listener = (IPapyrusListener) createExtension(element, element.getAttribute(REALIZATION_ID));
+ listenerRegistry.put(listenerName, listener);
+ } catch (Exception e) {
+ System.err.println("- " + listenerName + " can not be loaded: " + e);
+ }
+
+ }
+
+ /**
+ * Load an instance of a class
+ *
+ * @param element
+ * the extension point
+ * @param classAttribute
+ * the name of the class to load
+ * @return the loaded Class
+ * @throws Exception
+ * if the class is not loaded
+ */
+ private static Object createExtension(final IConfigurationElement element, final String classAttribute) throws Exception {
+ try {
+ Bundle extensionBundle = Platform.getBundle(element.getDeclaringExtension().getNamespaceIdentifier());
+ Class clazz = extensionBundle.loadClass(classAttribute);
+ Object obj = clazz.newInstance();
+ return obj;
+ // return element.createExecutableExtension(classAttribute);
+ } catch (Exception e) {
+ throw new Exception("unable to create Extension" + e);
+ }
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public String toString() {
+ String out = "ModelListener: \n";
+ Enumeration keyenum = listenerRegistry.keys();
+ // we will call to string in each class
+ while (keyenum.hasMoreElements()) {
+ Object aKey = keyenum.nextElement();
+ out = out + "- " + aKey.toString() + " (" + listenerRegistry.get(aKey).toString() + ")\n";
+ }
+ return out;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public void notifyChanged(Notification notification) {
+ super.notifyChanged(notification);
+ Enumeration keyenum = listenerRegistry.keys();
+ // we will call to string in each class
+ while (keyenum.hasMoreElements()) {
+ Object aKey = keyenum.nextElement();
+ ((IPapyrusListener) listenerRegistry.get(aKey)).notifyChanged(notification);
+ }
+ }
+}
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