/*
 *                 Sun Public License Notice
 *
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"). You may not use this file except in
 * compliance with the License. A copy of the License is available at
 * http://www.sun.com/
 *
 * The Original Code is NetBeans. The Initial Developer of the Original
 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2004 Sun
 * Microsystems, Inc. All Rights Reserved.
 */

package org.netbeans.modules.java.project;

import java.awt.event.ActionEvent;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import javax.swing.Action;
import org.netbeans.api.project.ProjectManager;
import org.openide.ErrorManager;
import org.openide.loaders.DataLoaderPool;
import org.openide.modules.ModuleInstall;
import org.openide.util.Lookup;
import org.netbeans.spi.project.ActionProvider;
import org.netbeans.spi.project.ui.support.FileSensitiveActions;
import org.openide.loaders.DataLoader;
import org.openide.util.ContextAwareAction;
import org.openide.util.HelpCtx;
import org.openide.util.NbBundle;
import org.openide.util.actions.CallableSystemAction;
import org.openide.util.actions.SystemAction;

/**
 * Startup and shutdown hooks for java project support module. It ensures that the
 * Nodes representing Java classes will have project specific actions (e.g.
 * compile/run/debug file) in the popup menu.
 * @author Petr Hrebejk
 */
public class JavaProjectModule extends ModuleInstall {
    
    public void restored() {
        // Hack JavaDataLoader actions
        
        DataLoaderPool dataLoaderPool = (DataLoaderPool) Lookup.getDefault().lookup(DataLoaderPool.class);
        
        try {
            Class javaDataObjectClass = Class.forName( "org.netbeans.modules.java.JavaDataObject", 
                                                        true, 
                                                        (ClassLoader)Lookup.getDefault().lookup( ClassLoader.class ) );
            
            DataLoader javaLoader = dataLoaderPool.firstProducerOf( javaDataObjectClass );
            
            ArrayList actions = new ArrayList(Arrays.asList(javaLoader.getActions()));
            ArrayList newActions = new ArrayList( actions.size() + 6 );

            for( Iterator it = actions.iterator(); it.hasNext(); ) {
                SystemAction a = (SystemAction)it.next();
                newActions.add( a );
                if ( a instanceof org.openide.actions.OpenAction ) {
                    newActions.add( null );
                    newActions.add( new CompileWrapper( ) );
                    newActions.add( null );
                    newActions.add( new RunWrapper(  ) );
                    newActions.add( new DebugWrapper(  ) );
                    newActions.add( null );
                }
            }


            javaLoader.setActions((SystemAction[])newActions.toArray(new SystemAction[newActions.size()]));        

            
        }
        catch( ClassNotFoundException e ) {
            ErrorManager.getDefault().notify( ErrorManager.INFORMATIONAL, e );
        }
        
    }
    
            
    public static class ActionWrapper extends CallableSystemAction implements ContextAwareAction, PropertyChangeListener {
        
        private Action action;
        
        public ActionWrapper( Action action ) {
            this.action = action;
            this.action.addPropertyChangeListener( this );
        }
            
        public String getName() {
            return (String)action.getValue( Action.NAME );
        }

        public String iconResource() {
            return null;
        }

        public HelpCtx getHelpCtx() {
            return HelpCtx.DEFAULT_HELP;
        }

        protected boolean asynchronous() {
            return false;
        }

        public void actionPerformed( ActionEvent ev ) {
            action.actionPerformed(ev);
        }
        
        public boolean isEnabled() {
            return action.isEnabled();            
        }
        
        public void performAction() {
            actionPerformed( new ActionEvent( this, 0, "" ) ); // NOI18N
        }
        
        public Action createContextAwareInstance( Lookup actionContext ) {
            Action a = ((ContextAwareAction) action).createContextAwareInstance(actionContext);
            return new AcceleratorWrapper(a, action);
        }
        
        public void propertyChange( PropertyChangeEvent evt ) {
            firePropertyChange( evt.getPropertyName(), evt.getOldValue(), evt.getNewValue() );
        }
        
    }
    
    private static final class AcceleratorWrapper implements Action {
        
        private final Action contextAwareAction;
        private final Action actionWithAccelerator;
        
        public AcceleratorWrapper(Action contextAwareAction, Action actionWithAccelerator) {
            this.contextAwareAction = contextAwareAction;
            this.actionWithAccelerator = actionWithAccelerator;
        }
        
    }
    
    public static class CompileWrapper extends ActionWrapper {
        
        CompileWrapper() {
            super( FileSensitiveActions.fileCommandAction( 
                       ActionProvider.COMMAND_COMPILE_SINGLE, 
                       NbBundle.getMessage( JavaProjectModule.class, "LBL_CompileFile_Action" ), // NOI18N
                       null ) );
        }
        
    }
    
    public static class RunWrapper extends ActionWrapper {
        RunWrapper() {
            super( FileSensitiveActions.fileCommandAction( 
                       ActionProvider.COMMAND_RUN_SINGLE, 
                       NbBundle.getMessage( JavaProjectModule.class, "LBL_RunFile_Action" ), // NOI18N
                       null ) );
            
        }
    }
    
    public static class DebugWrapper extends ActionWrapper {
        DebugWrapper() {
            super( FileSensitiveActions.fileCommandAction( 
                       ActionProvider.COMMAND_DEBUG_SINGLE, 
                       NbBundle.getMessage( JavaProjectModule.class, "LBL_DebugFile_Action" ), // NOI18N
                       null ) );
        }
    }
    
}