1 files changed, 138 insertions, 0 deletions
diff --git a/org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/internal/ui/views/ProblemDetailsExtensions.java b/org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/internal/ui/views/ProblemDetailsExtensions.java
new file mode 100644
index 0000000..689d9d8
--- /dev/null
+++ b/org.eclipse.cdt.codan.ui/src/org/eclipse/cdt/codan/internal/ui/views/ProblemDetailsExtensions.java
@@ -0,0 +1,138 @@
+/*******************************************************************************
+ * Copyright (c) 2010 Alena Laskavaia 
+ * 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:
+ *    Alena Laskavaia  - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.cdt.codan.internal.ui.views;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Iterator;
+
+import org.eclipse.cdt.codan.internal.ui.CodanUIActivator;
+import org.eclipse.cdt.codan.ui.AbstractCodanProblemDetailsProvider;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IConfigurationElement;
+import org.eclipse.core.runtime.IExtensionPoint;
+import org.eclipse.core.runtime.Platform;
+
+/**
+ * Class that can load extension for problemDetails
+ */
+public class ProblemDetailsExtensions {
+	public static final String ALL = "*";//$NON-NLS-1$
+	private static final String EXTENSION_POINT_NAME = "codanProblemDetails"; //$NON-NLS-1$
+	private static boolean extensionsLoaded;
+	private static HashMap<String, Collection<?>> map = new HashMap<String, Collection<?>>();
+
+	private static synchronized void readExtensions() {
+		if (extensionsLoaded) return;
+		IExtensionPoint ep = Platform.getExtensionRegistry().getExtensionPoint(CodanUIActivator.PLUGIN_ID, EXTENSION_POINT_NAME);
+		if (ep == null)
+			return;
+		try {
+			IConfigurationElement[] elements = ep.getConfigurationElements();
+			// process categories
+			for (int i = 0; i < elements.length; i++) {
+				IConfigurationElement configurationElement = elements[i];
+				processDetails(configurationElement);
+			}
+		} finally {
+			extensionsLoaded = true;
+		}
+	}
+
+	/**
+	 * @param configurationElement
+	 */
+	private static void processDetails(IConfigurationElement configurationElement) {
+		if (configurationElement.getName().equals("problemDetails")) { //$NON-NLS-1$
+			String id = configurationElement.getAttribute("problemId"); //$NON-NLS-1$
+			if (id == null) {
+				id = ALL;
+			}
+			addExtension(id, configurationElement);
+		}
+	}
+
+	public static AbstractCodanProblemDetailsProvider resolveClass(IConfigurationElement configurationElement) {
+		AbstractCodanProblemDetailsProvider res;
+		try {
+			res = (AbstractCodanProblemDetailsProvider) configurationElement.createExecutableExtension("class");//$NON-NLS-1$
+		} catch (CoreException e) {
+			CodanUIActivator.log(e);
+			return null;
+		}
+		return res;
+	}
+
+	@SuppressWarnings({ "unchecked", "rawtypes" })
+	private static void addExtension(String id, IConfigurationElement configurationElement) {
+		Collection collection = getCollection(id);
+		collection.add(configurationElement);
+	}
+
+	/**
+	 * Remove provider from the list
+	 * @param id - codan problem id or ALL
+	 * @param el - details provider (class extending AbstractCodanProblemDetailsProvider) or ElementConfiguration (user internally) 
+	 */
+	@SuppressWarnings("rawtypes")
+	public static void removeExtension(String id, Object el) {
+		Collection collection = getCollection(id);
+		collection.remove(el);
+	}
+
+	@SuppressWarnings("rawtypes")
+	private static Collection getCollection(String id) {
+		Collection collection = map.get(id);
+		if (collection == null) {
+			collection = new ArrayList();
+			map.put(id, collection);
+		}
+		return collection;
+	}
+
+	public static Collection<AbstractCodanProblemDetailsProvider> getProviders(String id) {
+		readExtensions();
+		Collection<AbstractCodanProblemDetailsProvider> providers = new ArrayList<AbstractCodanProblemDetailsProvider>();
+		Collection<?> collection1 = getCollection(id);
+		Collection<?> collection2 = getCollection(ALL);
+		providers.addAll(resolveProviders(collection1));
+		providers.addAll(resolveProviders(collection2));
+		return providers;
+	}
+
+	@SuppressWarnings({ "rawtypes", "unchecked" })
+	public static Collection<AbstractCodanProblemDetailsProvider> resolveProviders(Collection collection) {
+		Collection res = new ArrayList(collection);
+		for (Iterator iterator = res.iterator(); iterator.hasNext();) {
+			Object object = iterator.next();
+			if (object instanceof IConfigurationElement) {
+				// resolve
+				collection.remove(object);
+				AbstractCodanProblemDetailsProvider provider = resolveClass((IConfigurationElement) object);
+				if (provider!=null)
+					collection.add(provider);
+			}
+		}
+		return collection;
+	}
+
+	/**
+	 * Add extension (details provider) using API
+	 * @param id - codan problem id or ALL
+	 * @param provider - class extending AbstractCodanProblemDetailsProvider
+	 */
+	@SuppressWarnings({ "rawtypes", "unchecked" })
+	public static void addExtension(String id, AbstractCodanProblemDetailsProvider provider) {
+		Collection collection = getCollection(id);
+		collection.add(provider);
+	}
+}