/*
 *                 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 1997-2003 Sun
 * Microsystems, Inc. All Rights Reserved.
 */


package org.netbeans.modules.i18n;


import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.JMenuItem;

import org.openide.filesystems.FileStateInvalidException;
import org.openide.loaders.DataFolder;
import org.openide.loaders.DataObject;
import org.openide.nodes.Node;
import org.openide.util.actions.Presenter;
import org.openide.util.RequestProcessor;
import org.openide.windows.TopComponent;
import org.openide.windows.WindowManager;


/** 
 * I18n group action which is present in nodes Tools popup menu if the nodes 
 * contains some "i18n-izable" data objects. I never presents icon.
 *
 * @author Peter Zavadsky
 */
public class I18nGroupPopupAction extends I18nGroupAction implements Presenter.Popup {

    /** Generated serial version UID. */
    static final long serialVersionUID = -2577653086544960835L;

    /**
     * Queried by any popup containg ToolsAction. It does not proxy
     * to enable(Activated nodes).
     */
    public boolean isEnabled() {
        //??? if you see here a performance problem please change superclass
        // to extend NodeAction instead of using hard to understand ad-hoc logic
        return enable(WindowManager.getDefault().getRegistry().getActivatedNodes());
    }
    
    /** 
     * Indicates if action becomes enabled based on activated nodes. Implements superclass abstract method. 
     * @return true if one of activate nodes is data object which is able to i18n-ize
     * or is data folder (it's not scaned inside -> too costly operation), it's supposed it can contain such data objects.
     * @see FactoryRegistry#hasFactory 
     */
    protected boolean enable(Node[] activatedNodes) {
        if (activatedNodes == null) return false;

        for (int i = 0; i < activatedNodes.length; i++) {
            DataObject dataObject = (DataObject)activatedNodes[i].getCookie(DataObject.class);

            if (dataObject == null) continue;

            if (dataObject instanceof DataFolder) {
                // Workaround #14740 disable action on SystemFileSystem.
                try {
                    if(dataObject.getPrimaryFile().getFileSystem().isDefault()) {
                        continue;
                    }
                } catch(FileStateInvalidException fsie) {
                    continue;
                }
                
                return true;
            } else if (FactoryRegistry.hasFactory(dataObject.getClass())) {
                return true;
            }
        }

        return false;
    }

    /** Implements Presenter.Popup interface. */
    public JMenuItem getPopupPresenter() {
        return I18nGroupAction.LazyPopup.createLazyPopup(false, this);
    }
            
}