package com.quantum.actions;

import com.quantum.ImageStore;
import com.quantum.Messages;
import com.quantum.model.Entity;
import com.quantum.view.bookmark.EntityNode;
import com.quantum.view.tableview.TableView;

import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.actions.SelectionListenerAction;

/**
 * @author root
 * Implements action for "View Table"
*/
public class ViewTableAction extends SelectionListenerAction {
    private Entity entity;
    
	public ViewTableAction(IViewPart view) {
        super(Messages.getString(ViewTableAction.class, "text"));
        setImageDescriptor(
        		ImageStore.getImageDescriptor(ImageStore.OPEN_TABLE));
	}

	public void run() {
		TableView.getInstance().loadTable(this.entity);
        // TODO: reinstate this
//		} else if (view instanceof SubsetView){
//			SubsetView subsetView = (SubsetView) view;
//			node = (TreeNode) subsetView.getCurrent();
//			if (!(node instanceof ObjectNode)) return;
//			ObjectNode objectNode = (ObjectNode) node;
//
//			String query = objectNode.getQuery();
//			
//			SQLResults results = ViewHelper.tryGetResults(view, objectNode.getConnection(), query);
//			if (results != null && ! results.isError()) 
//				TableView.getInstance().loadQuery(bookmark.getBookmark(), results);
//
	}

	public boolean updateSelection(IStructuredSelection selection) {
        boolean enabled = super.updateSelection(selection);
        enabled &= (selection.size() == 1);
        
        if (enabled) {
            Object object = selection.getFirstElement();
            if (object != null && object instanceof EntityNode) {
                EntityNode entityNode = (EntityNode) object;
                this.entity = entityNode.getEntity();
                enabled &= (entityNode.isTable() || entityNode.isView());
            }
        }
        return enabled;
	}
}