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 package org.netbeans.modules.ada.project;

 import java.beans.PropertyChangeEvent;

 import java.beans.PropertyChangeListener;

 import javax.swing.event.ChangeEvent;

 import javax.swing.event.ChangeListener;

 import org.netbeans.api.project.FileOwnerQuery;

 import org.netbeans.api.project.Project;

 import org.netbeans.api.project.ProjectManager;

 import org.netbeans.api.project.SourceGroup;

 import org.netbeans.api.project.Sources;

 import org.netbeans.modules.ada.project.ui.properties.AdaProjectProperties;

 import org.netbeans.spi.project.support.ant.AntProjectHelper;

 import org.netbeans.spi.project.support.ant.PropertyEvaluator;

 import org.netbeans.spi.project.support.ant.SourcesHelper;

 import org.openide.util.ChangeSupport;

 import org.openide.util.Mutex;

 /**

  *

  * @author Andrea Lucarelli

  */

 public class AdaSources implements Sources, ChangeListener, PropertyChangeListener {

     private static final String BUILD_DIR_PROP = "${" + AdaProjectProperties.BUILD_DIR + "}";    //NOI18N

     private static final String DIST_DIR_PROP = "${" + AdaProjectProperties.DIST_DIR + "}";    //NOI18N

     public static final String SOURCES_TYPE_ADA = "ADASOURCE"; // NOI18N

     private final Project project;

     private final ChangeSupport changeSupport;

     private final AntProjectHelper helper;

     private final PropertyEvaluator evaluator;

     private final SourceRoots sourceRoots;

     private final SourceRoots testRoots;

     private Sources delegate;

     private SourcesHelper sourcesHelper;

     private boolean externalRootsRegistered;

     public AdaSources(Project project, final AntProjectHelper helper, final PropertyEvaluator eval, final SourceRoots sources, final SourceRoots tests) {

         assert project != null;

         assert helper != null;

         assert eval != null;

         assert sources != null;

         assert tests != null;

         this.project = project;

         this.helper = helper;

         this.evaluator = eval;

         this.sourceRoots = sources;

         this.testRoots = tests;

         this.changeSupport = new ChangeSupport(this);

         this.sourceRoots.addPropertyChangeListener(this);

         this.testRoots.addPropertyChangeListener(this);

         this.evaluator.addPropertyChangeListener(this);

         initSources();

     }

     public SourceGroup[] getSourceGroups(final String type) {

         return ProjectManager.mutex().readAccess(new Mutex.Action<SourceGroup[]>() {

             public SourceGroup[] run() {

                 Sources _delegate;

                 synchronized (AdaSources.this) {

                     if (delegate == null) {

                         delegate = initSources();

                         delegate.addChangeListener(AdaSources.this);

                     }

                     _delegate = delegate;

                 }

                 SourceGroup[] groups = _delegate.getSourceGroups(type);

                 return groups;

             }

         });

     }

     private Sources initSources() {

         this.sourcesHelper = new SourcesHelper(project, helper, evaluator);

         register(sourceRoots);

         register(testRoots);

         this.sourcesHelper.addNonSourceRoot(BUILD_DIR_PROP);

         this.sourcesHelper.addNonSourceRoot(DIST_DIR_PROP);

         externalRootsRegistered = false;

         ProjectManager.mutex().postWriteRequest(new Runnable() {

             public void run() {

                 if (!externalRootsRegistered) {

                     sourcesHelper.registerExternalRoots(FileOwnerQuery.EXTERNAL_ALGORITHM_TRANSIENT);

                     externalRootsRegistered = true;

                 }

             }

         });

         return this.sourcesHelper.createSources();

     }

     private void register(SourceRoots roots) {

         String[] propNames = roots.getRootProperties();

         String[] rootNames = roots.getRootNames();

         for (int i = 0; i < propNames.length; i++) {

             String prop = propNames[i];

             String displayName = roots.getRootDisplayName(rootNames[i], prop);

             String loc = "${" + prop + "}"; // NOI18N

 //            sourcesHelper.addPrincipalSourceRoot(loc, displayName, null, null); // NOI18N

 //            sourcesHelper.addTypedSourceRoot(loc, SOURCES_TYPE_ADA, displayName, null, null);

             sourcesHelper.sourceRoot(loc).displayName(displayName)

                     .add() // principal root

                     .type(SOURCES_TYPE_ADA).add();    // typed root

         }

     }

     public void addChangeListener(ChangeListener changeListener) {

         changeSupport.addChangeListener(changeListener);

     }

     public void removeChangeListener(ChangeListener changeListener) {

         changeSupport.removeChangeListener(changeListener);

     }

     private void fireChange() {

         synchronized (this) {

             if (delegate != null) {

                 delegate.removeChangeListener(this);

                 delegate = null;

             }

         }

         changeSupport.fireChange();

     }

     public void propertyChange(PropertyChangeEvent evt) {

         String propName = evt.getPropertyName();

         if (SourceRoots.PROP_ROOT_PROPERTIES.equals(propName) ||

                 AdaProjectProperties.BUILD_DIR.equals(propName) ||

                 AdaProjectProperties.DIST_DIR.equals(propName)) {

             this.fireChange();

         }

     }

     public void stateChanged(ChangeEvent event) {

         this.fireChange();

     }

 }