/*
 * Copyright (C) 2006 Davy Vanherbergen
 * dvanherbergen@users.sourceforge.net
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package net.sourceforge.sqlexplorer.dbstructure.actions;

import net.sourceforge.sqlexplorer.Messages;
import net.sourceforge.sqlexplorer.dbdetail.DetailTabManager;
import net.sourceforge.sqlexplorer.dbstructure.nodes.DatabaseNode;
import net.sourceforge.sqlexplorer.plugin.SQLExplorerPlugin;
import net.sourceforge.sqlexplorer.plugin.views.DatabaseDetailView;
import net.sourceforge.sqlexplorer.plugin.views.DatabaseStructureView;
import net.sourceforge.sqlexplorer.plugin.views.SqlexplorerViewConstants;
import net.sourceforge.sqlexplorer.util.ImageUtil;

import org.eclipse.jface.resource.ImageDescriptor;


/**
 * Refresh a node and its' children in the database structure view.
 * @author Davy Vanherbergen
 *
 */
public class RefreshNodeAction extends AbstractDBTreeContextAction {

    private static final ImageDescriptor _image = ImageUtil.getDescriptor("Images.RefreshIcon");
    
    /**
     * Custom image for refresh action
     * @see org.eclipse.jface.action.IAction#getImageDescriptor()
     */
    public ImageDescriptor getImageDescriptor() {
        return _image;
    }

    /**
     * Set the text for the menu entry.
     * @see org.eclipse.jface.action.IAction#getText()
     */
    public String getText() {
        return Messages.getString("DatabaseStructureView.Actions.Refresh");
    }

    /**
     * Refresh selected node and descendants.
     * @see org.eclipse.jface.action.IAction#run()
     */
    public void run() {

        // clear cache for all nodes
        for (int i = 0; i < _selectedNodes.length; i++) {
            
            if (_selectedNodes[i] instanceof DatabaseNode) {
                // clear detail cache for session
                DetailTabManager.clearCacheForSession(_selectedNodes[i].getSession());
                break;
            } else {
                // clear detail cache for node.
                DetailTabManager.clearCacheForNode(_selectedNodes[i]);
            }
        }
        
                
        // refresh nodes
        for (int i = 0; i < _selectedNodes.length; i++) {
            _selectedNodes[i].refresh();
        }
        
        // refresh structure view
        DatabaseStructureView structureView = SQLExplorerPlugin.getDefault().getDatabaseStructureView();       
        _treeViewer.refresh();

        // refresh detail view
        DatabaseDetailView detailView = (DatabaseDetailView) SQLExplorerPlugin.getDefault().getWorkbench()
        .getActiveWorkbenchWindow().getActivePage().findView(SqlexplorerViewConstants.SQLEXPLORER_DBDETAIL);
        structureView.synchronizeDetailView(detailView);
    }

    
    /**
     * Action is availble when a node is selected
     * 
     * @see net.sourceforge.sqlexplorer.dbstructure.actions.AbstractDBTreeContextAction#isAvailable()
     */
    public boolean isAvailable() {

        if (_selectedNodes.length == 0) {
            return false;
        }
        return true;
    }
}