/*******************************************************************************
 * Copyright (c) 2003, 2004 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 * IBM Corporation - initial API and implementation
 *******************************************************************************/
/*
 * Created on Mar 29, 2004
 *
 * To change the template for this generated file go to
 * Window - Preferences - Java - Code Generation - Code and Comments
 */
package org.eclipse.jst.j2ee.internal.wizard;

import org.eclipse.core.resources.IProject;
import org.eclipse.jst.common.internal.annotations.controller.AnnotationsControllerManager;
import org.eclipse.jst.j2ee.application.internal.operations.IAnnotationsDataModel;
import org.eclipse.jst.j2ee.ejb.annotation.internal.preferences.AnnotationPreferenceStore;
import org.eclipse.jst.j2ee.ejb.annotation.internal.provider.IAnnotationProvider;
import org.eclipse.jst.j2ee.ejb.annotation.internal.utility.AnnotationUtilities;
import org.eclipse.jst.j2ee.internal.plugin.J2EEUIMessages;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.wst.common.frameworks.datamodel.IDataModel;
import org.eclipse.wst.common.frameworks.internal.datamodel.ui.DataModelSynchHelper;

/**
 * @author jlanuti
 * 
 * To change the template for this generated type comment go to Window - Preferences - Java - Code
 * Generation - Code and Comments
 */
public class AnnotationsStandaloneGroup {

	protected Object model;
	protected Object synchHelper;
	protected Button useAnnotations;
	private boolean isForBean;
	private boolean useServletString = false;
	public static final String EJBTAGSET = "ejb"; //$NON-NLS-1$
	public static boolean shouldBeanDefaultUseAnnotations = false;
	public static boolean shouldProjectDefaultUseAnnotations = false;


	private class CheckboxSelectionListener implements SelectionListener {
		public void widgetSelected(SelectionEvent e) {
			Button button = (Button) e.getSource();
			if (isForBean)
				shouldBeanDefaultUseAnnotations = button.getSelection();
			else
				shouldProjectDefaultUseAnnotations = button.getSelection();
		}

		public void widgetDefaultSelected(SelectionEvent e) {
			//do nothing
		}
	}

	private CheckboxSelectionListener checkboxSelectionListener = new CheckboxSelectionListener();

	/**
	 * Constructor
	 */
	public AnnotationsStandaloneGroup(Composite parent, Object model, boolean forBean) {
		this(parent, model, forBean, false);
	}

	/**
	 * Constructor
	 */
	public AnnotationsStandaloneGroup(Composite parent, Object model, boolean forBean, boolean useServlet) {
		super();
		synchHelper = new DataModelSynchHelper((IDataModel)model);
		this.model = model;
		this.isForBean = forBean;
		this.useServletString = useServlet;
		
		buildComposites(parent);
	}

	/**
	 * @param parent
	 */
	protected void buildComposites(Composite parent) {
		// Add separator
		Label separator = new Label(parent, SWT.SEPARATOR | SWT.HORIZONTAL);
		GridData gd = new GridData(GridData.FILL_HORIZONTAL);
		gd.horizontalSpan = 3;
		separator.setLayoutData(gd);
		// Add spacer
		Label spacer = new Label(parent, SWT.NONE);
		GridData gd1 = new GridData(GridData.FILL_HORIZONTAL);
		gd1.horizontalSpan = 3;
		spacer.setLayoutData(gd1);
		// Add annotations checkbox and label
		useAnnotations = new Button(parent, SWT.CHECK);
		String labelText;
		if (useServletString)
			labelText = J2EEUIMessages.getResourceString(J2EEUIMessages.USE_ANNOTATIONS_SERVLET);
		else if (isForBean)
			labelText = J2EEUIMessages.getResourceString(J2EEUIMessages.USE_ANNOTATIONS);
		else
			labelText = J2EEUIMessages.getResourceString(J2EEUIMessages.ADD_ANNOTATIONS_SUPPORT);
		useAnnotations.setText(labelText);
		((DataModelSynchHelper)synchHelper).synchCheckbox(useAnnotations, IAnnotationsDataModel.USE_ANNOTATIONS, null);
		useAnnotations.addSelectionListener(checkboxSelectionListener);
		GridData gd2 = new GridData(GridData.FILL_HORIZONTAL);
		gd2.horizontalSpan = 2;
		useAnnotations.setLayoutData(gd2);
		// If for project, set the global annotations supported
		if (!isForBean)
			setEnablement(null);
	}

	public void dispose() {
		((IDataModel)model).removeListener((DataModelSynchHelper)synchHelper);
		synchHelper = null;
		model = null;
	}

	public boolean isAnnotationsSupported(IProject project) {
		//TODO clean up to be module based, not project based
		try {
			//			if (isForBean) {
			//				AnnotationsController controller =
			// AnnotationsControllerManager.INSTANCE.getAnnotationsController(project);
			//				return (controller !=null && controller.isTagHandlerInstalled(EJBTAGSET));
			//			}
//			J2EEModuleNature nature = null;
//			if (project != null && project.hasNature(IWebNatureConstants.J2EE_NATURE_ID))
//				nature = (J2EEModuleNature) project.getNature(IWebNatureConstants.J2EE_NATURE_ID);
//			else if (project != null && project.hasNature(IEJBNatureConstants.NATURE_ID))
//				nature = (J2EEModuleNature) project.getNature(IEJBNatureConstants.NATURE_ID);
//
//			if (!isForBean || (nature != null && nature.getJ2EEVersion() > J2EEVersionConstants.VERSION_1_2))
				return true;
//			return false;
		} catch (Throwable t) {
			t.printStackTrace();
			return false;
		}
	}

	public void setEnablement(IProject project) {
		//TODO
		//boolean isEnabled = isAnnotationsSupported(project);
		boolean isControllerEnabled = AnnotationsControllerManager.INSTANCE.isAnyAnnotationsSupported();
		final String preferred = AnnotationPreferenceStore.getProperty(AnnotationPreferenceStore.ANNOTATIONPROVIDER);
		IAnnotationProvider annotationProvider = null;
		boolean isProviderEnabled = false;
		if (preferred !=null) {
			try {
				annotationProvider = AnnotationUtilities.findAnnotationProviderByName(preferred);
			} catch (Exception ex) { 
				//Default
			}
			if (annotationProvider != null && annotationProvider.isValid()){
				isProviderEnabled = true;
			}
		}
		boolean shouldEnable = isControllerEnabled || isProviderEnabled;
		if (!shouldEnable) {
			((IDataModel)model).setProperty(IAnnotationsDataModel.USE_ANNOTATIONS, Boolean.FALSE);
		}
		useAnnotations.setEnabled(shouldEnable);
//		if (!isEnabled || (!isForBean && !shouldProjectDefaultUseAnnotations) || (isForBean && !shouldBeanDefaultUseAnnotations)) {
//			useAnnotations.setSelection(false);
//			model.setProperty(IAnnotationsDataModel.USE_ANNOTATIONS, Boolean.FALSE);
//		} else {
//			useAnnotations.setSelection(true);
//			model.setProperty(IAnnotationsDataModel.USE_ANNOTATIONS, Boolean.TRUE);
//		}
	}
	
	
	public void setUseServlet(boolean aBoolean) {
		useServletString = aBoolean;
	}
	
	public void setUseAnnotations(boolean aBoolean) {
		if (useAnnotations != null) {
			useAnnotations.setSelection(aBoolean);
			((IDataModel)model).setProperty(IAnnotationsDataModel.USE_ANNOTATIONS, new Boolean(aBoolean));
		}
	}
}