/*
 This file belongs to the Servoy development and deployment environment, Copyright (C) 1997-2010 Servoy BV

 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU Affero General Public License as published by the Free
 Software Foundation; either version 3 of the License, or (at your option) any
 later version.

 This program 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 Affero General Public License for more details.

 You should have received a copy of the GNU Affero General Public License along
 with this program; if not, see http://www.gnu.org/licenses or write to the Free
 Software Foundation,Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
 */
package com.servoy.j2db.smart.scripting;


import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;

import javax.swing.JMenuItem;
import javax.swing.KeyStroke;

import org.mozilla.javascript.Function;
import org.mozilla.javascript.Scriptable;

import com.servoy.j2db.FormController;
import com.servoy.j2db.FormManager;
import com.servoy.j2db.IApplication;
import com.servoy.j2db.Messages;
import com.servoy.j2db.persistence.AbstractBase;
import com.servoy.j2db.persistence.RepositoryException;
import com.servoy.j2db.persistence.ScriptMethod;
import com.servoy.j2db.scripting.FunctionDefinition;
import com.servoy.j2db.scripting.LazyCompilationScope;
import com.servoy.j2db.smart.J2DBClient;
import com.servoy.j2db.util.Debug;

/**
 * @author jcompagner
 * 
 */
public class ScriptMenuItem extends JMenuItem implements ActionListener
{
	private static final long serialVersionUID = 1L;

	private final IApplication application;
	private final FunctionDefinition functionDefinition;

	/**
	 * Constructor for ScriptMenuItem.
	 * 
	 * @param text
	 */
	public ScriptMenuItem(IApplication application, FunctionDefinition functionDefinition, String text, int autoSortcut)
	{
		super(text);
		this.application = application;
		this.functionDefinition = functionDefinition;
		if (autoSortcut >= 0 && autoSortcut <= 9)
		{
			setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_0 + autoSortcut, J2DBClient.menuShortcutKeyMask));
		}
		addActionListener(this);
	}

	/**
	 * @see java.awt.event.ActionListener#actionPerformed(ActionEvent)
	 */
	public void actionPerformed(ActionEvent e)
	{
		application.invokeLater(new Runnable()
		{
			public void run()
			{
				Scriptable sc = null;
				Object fn = null;
				String scopeName = functionDefinition.getScopeName();
				FormController formController = null;
				if (scopeName != null)
				{
					// global method
					sc = application.getScriptEngine().getScopesScope().getGlobalScope(scopeName);
					fn = sc == null ? null : ((LazyCompilationScope)sc).getFunctionByName(functionDefinition.getMethodName());
				}
				else
				{
					// form/foundset method
					formController = ((FormManager)application.getFormManager()).leaseFormPanel(functionDefinition.getContextName());
					if (formController != null)
					{
						sc = formController.getFormScope();
						fn = ((LazyCompilationScope)sc).getFunctionByName(functionDefinition.getMethodName());
						if (fn == null && formController.getFormModel() != null)
						{
							// try foundset method
							ScriptMethod scriptMethod;
							try
							{
								scriptMethod = AbstractBase.selectByName(
									application.getFlattenedSolution().getFoundsetMethods(formController.getTable(), false).iterator(),
									functionDefinition.getMethodName());
							}
							catch (RepositoryException ex)
							{
								Debug.error(ex);
								return;
							}
							if (scriptMethod != null)
							{
								sc = formController.getFormModel();
								fn = sc.getPrototype().get(scriptMethod.getName(), sc);
							}
						}
					}
				}

				if (fn instanceof Function)
				{
					final Function function = (Function)fn;
					final Scriptable scope = sc;
					try
					{
						if (formController != null)
						{
							formController.executeFunction(function, null, scope, true);
						}
						else
						{
							// we want to execute via the current form, so we set the trigger form name
							FormController fc = (FormController)application.getFormManager().getCurrentForm();
							if (fc != null)
							{
								// there for we need to add the prefix to pass through formcontroller
								fc.executeFunction(functionDefinition.getContextName() + '.' + functionDefinition.getMethodName(), null, true, null, false,
									null);
							}
							else
							{
								//is global only and no current form
								application.getScriptEngine().executeFunction(function, scope, scope, null, false, false);
							}
						}
					}
					catch (Exception e1)
					{
						application.reportError(
							Messages.getString("servoy.formPanel.error.executingMethod", new Object[] { functionDefinition.getMethodName() }), e1); //$NON-NLS-1$ 
					}
				}
			}
		});
	}
}