# HG changeset patch
# Parent c44a0817952aa55e848689ee69c8cba3ea5e8983
diff --git a/projectuiapi/apichanges.xml b/projectuiapi/apichanges.xml
--- a/projectuiapi/apichanges.xml
+++ b/projectuiapi/apichanges.xml
@@ -107,6 +107,21 @@
+
+
+ Added a support class for ProjectProblemsProvider.
+
+
+
+
+
+
+ Added support class for provider of project metadata problems.
+
+
+
+
+
API to get current active project group and listen to project groups switching
diff --git a/projectuiapi/nbproject/project.properties b/projectuiapi/nbproject/project.properties
--- a/projectuiapi/nbproject/project.properties
+++ b/projectuiapi/nbproject/project.properties
@@ -42,7 +42,7 @@
javac.compilerargs=-Xlint -Xlint:-serial
javac.source=1.6
-spec.version.base=1.62.0
+spec.version.base=1.63.0
is.autoload=true
javadoc.arch=${basedir}/arch.xml
javadoc.apichanges=${basedir}/apichanges.xml
diff --git a/projectuiapi/src/org/netbeans/spi/project/ui/ProjectProblemsProvider.java b/projectuiapi/src/org/netbeans/spi/project/ui/ProjectProblemsProvider.java
--- a/projectuiapi/src/org/netbeans/spi/project/ui/ProjectProblemsProvider.java
+++ b/projectuiapi/src/org/netbeans/spi/project/ui/ProjectProblemsProvider.java
@@ -75,6 +75,8 @@
*
*
*
+ * @see org.netbeans.spi.project.ui.support.ProjectProblemsProviderSupport
+ *
* @author Tomas Zezula
* @since 1.60
*/
diff --git a/projectuiapi/src/org/netbeans/spi/project/ui/support/ProjectProblemsProviderSupport.java b/projectuiapi/src/org/netbeans/spi/project/ui/support/ProjectProblemsProviderSupport.java
new file mode 100644
--- /dev/null
+++ b/projectuiapi/src/org/netbeans/spi/project/ui/support/ProjectProblemsProviderSupport.java
@@ -0,0 +1,162 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2012 Oracle and/or its affiliates. All rights reserved.
+ *
+ * Oracle and Java are registered trademarks of Oracle and/or its affiliates.
+ * Other names may be trademarks of their respective owners.
+ *
+ * The contents of this file are subject to the terms of either the GNU
+ * General Public License Version 2 only ("GPL") or the Common
+ * Development and Distribution License("CDDL") (collectively, the
+ * "License"). You may not use this file except in compliance with the
+ * License. You can obtain a copy of the License at
+ * http://www.netbeans.org/cddl-gplv2.html
+ * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
+ * specific language governing permissions and limitations under the
+ * License. When distributing the software, include this License Header
+ * Notice in each file and include the License file at
+ * nbbuild/licenses/CDDL-GPL-2-CP. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the GPL Version 2 section of the License file that
+ * accompanied this code. If applicable, add the following below the
+ * License Header, with the fields enclosed by brackets [] replaced by
+ * your own identifying information:
+ * "Portions Copyrighted [year] [name of copyright owner]"
+ *
+ * If you wish your version of this file to be governed by only the CDDL
+ * or only the GPL Version 2, indicate your decision by adding
+ * "[Contributor] elects to include this software in this distribution
+ * under the [CDDL or GPL Version 2] license." If you do not indicate a
+ * single choice of license, a recipient has the option to distribute
+ * your version of this file under either the CDDL, the GPL Version 2 or
+ * to extend the choice of license to its licensees as provided above.
+ * However, if you add GPL Version 2 code and therefore, elected the GPL
+ * Version 2 license, then the option applies only if the new code is
+ * made subject to such option by the copyright holder.
+ *
+ * Contributor(s):
+ *
+ * Portions Copyrighted 2012 Sun Microsystems, Inc.
+ */
+package org.netbeans.spi.project.ui.support;
+
+import java.beans.PropertyChangeListener;
+import java.beans.PropertyChangeSupport;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import org.netbeans.api.annotations.common.NonNull;
+import org.netbeans.spi.project.ui.ProjectProblemsProvider;
+import org.openide.util.Parameters;
+
+/**
+ * Support for {@link ProjectProblemsProvider provider of project metadata problems}.
+ *
+ * This class is thread-safe.
+ * @author Tomas Mysik
+ * @since 1.63
+ */
+public final class ProjectProblemsProviderSupport {
+
+ private final PropertyChangeSupport propertyChangeSupport;
+ private final Object problemsLock = new Object();
+
+ // @GuardedBy("problemsLock")
+ private Collection problems;
+ // @GuardedBy("problemsLock")
+ private long changeId;
+
+
+ /**
+ * Create a new {@code ProjectProblemsProviderSupport}.
+ *
+ * @param source an instance to be given as the source for events, never {@code null}
+ */
+ public ProjectProblemsProviderSupport(@NonNull Object source) {
+ Parameters.notNull("source", source);
+ propertyChangeSupport = new PropertyChangeSupport(source);
+ }
+
+ /**
+ * Add a listener to the listener list.
+ * @param listener {@link PropertyChangeListener} to be added, never {@code null}
+ * @see PropertyChangeSupport#addPropertyChangeListener(PropertyChangeListener)
+ */
+ public void addPropertyChangeListener(@NonNull PropertyChangeListener listener) {
+ Parameters.notNull("listener", listener);
+ propertyChangeSupport.addPropertyChangeListener(listener);
+ }
+
+ /**
+ * Remove a listener from the listener list.
+ * @param listener {@link PropertyChangeListener} to be removed, never {@code null}
+ * @see PropertyChangeSupport#removePropertyChangeListener(PropertyChangeListener)
+ */
+ public void removePropertyChangeListener(@NonNull PropertyChangeListener listener) {
+ Parameters.notNull("listener", listener);
+ propertyChangeSupport.removePropertyChangeListener(listener);
+ }
+
+ /**
+ * Get project problems using the given {@link ProblemsCollector problems collector}.
+ * @param problemsCollector {@link ProblemsCollector problems collector} to be used, never {@code null}
+ * @return collection of project problems, never {@code null}
+ */
+ @NonNull
+ public Collection extends ProjectProblemsProvider.ProjectProblem> getProblems(@NonNull ProblemsCollector problemsCollector) {
+ Parameters.notNull("problemsCollector", problemsCollector);
+
+ Collection currentProblems;
+ long currentChangeId;
+ synchronized (problemsLock) {
+ currentProblems = problems;
+ currentChangeId = changeId;
+ }
+ if (currentProblems != null) {
+ return Collections.unmodifiableCollection(currentProblems);
+ }
+ currentProblems = new ArrayList();
+ currentProblems.addAll(problemsCollector.collectProblems());
+ if (currentProblems.isEmpty()) {
+ currentProblems = Collections.emptySet();
+ }
+ synchronized (problemsLock) {
+ if (currentChangeId == changeId) {
+ problems = currentProblems;
+ } else if (problems != null) {
+ currentProblems = problems;
+ }
+ }
+ assert currentProblems != null;
+ return Collections.unmodifiableCollection(currentProblems);
+ }
+
+ /**
+ * Fire {@link ProjectProblemsProvider#PROP_PROBLEMS project problems property} change event to all registered listeners.
+ */
+ public void fireProblemsChange() {
+ synchronized (problemsLock) {
+ problems = null;
+ changeId++;
+ }
+ propertyChangeSupport.firePropertyChange(ProjectProblemsProvider.PROP_PROBLEMS, null, null);
+ }
+
+ //~ Inner classes
+
+ /**
+ * Collector of current project problems.
+ */
+ public interface ProblemsCollector {
+
+ /**
+ * Collect current project problems.
+ * @return list of current project problems, can be empty but never {@code null}
+ */
+ @NonNull
+ Collection extends ProjectProblemsProvider.ProjectProblem> collectProblems();
+
+ }
+
+}