/*******************************************************************************
 * Copyright (c) 2003, 2008 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
 * Kaloyan Raev, kaloyan.raev@sap.com
 *******************************************************************************/
package org.eclipse.jst.servlet.ui.internal.wizard;

import static org.eclipse.jst.j2ee.internal.common.operations.INewJavaClassDataModelProperties.PROJECT;
import static org.eclipse.jst.j2ee.internal.web.operations.INewServletClassDataModelProperties.IS_SERVLET_TYPE;
import static org.eclipse.jst.j2ee.internal.web.operations.INewWebClassDataModelProperties.USE_EXISTING_CLASS;
import static org.eclipse.jst.servlet.ui.internal.wizard.IWebWizardConstants.CHOOSE_SERVLET_CLASS;
import static org.eclipse.jst.servlet.ui.internal.wizard.IWebWizardConstants.NEW_SERVLET_WIZARD_WINDOW_TITLE;
import static org.eclipse.jst.servlet.ui.internal.wizard.IWebWizardConstants.USE_EXISTING_SERVLET_CLASS;

import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IPath;
import org.eclipse.jdt.core.IType;
import org.eclipse.jem.util.emf.workbench.ProjectUtilities;
import org.eclipse.jface.window.Window;
import org.eclipse.jst.j2ee.internal.war.ui.util.WebServletGroupItemProvider;
import org.eclipse.jst.j2ee.webapplication.WebApp;
import org.eclipse.jst.jee.ui.internal.navigator.web.GroupServletItemProvider;
import org.eclipse.jst.jee.ui.internal.navigator.web.WebAppProvider;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Cursor;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.wst.common.componentcore.ComponentCore;
import org.eclipse.wst.common.componentcore.resources.IVirtualComponent;
import org.eclipse.wst.common.frameworks.datamodel.IDataModel;

public class NewServletClassWizardPage extends NewWebClassWizardPage {

	private final static String[] JSPEXTENSIONS = { "jsp" }; //$NON-NLS-1$
	
	public NewServletClassWizardPage(IDataModel model, String pageName, String pageDesc, String pageTitle, String moduleType) {
		super(model, pageName, pageDesc, pageTitle, moduleType);
	}
	
	@Override
	protected String getUseExistingCheckboxText() {
		return USE_EXISTING_SERVLET_CLASS;
	}
	
	@Override
	protected String getUseExistingProperty() {
		return USE_EXISTING_CLASS;
	}

	@Override
	protected IProject getExtendedSelectedProject(Object selection) {
		if (selection instanceof WebServletGroupItemProvider) {
			WebApp webApp = (WebApp) ((WebServletGroupItemProvider) selection).getParent();
			return ProjectUtilities.getProject(webApp);
		} else if(selection instanceof WebAppProvider){
			return ((WebAppProvider) selection).getProject();
		} else if(selection instanceof GroupServletItemProvider){
			org.eclipse.jst.javaee.web.WebApp webApp = (org.eclipse.jst.javaee.web.WebApp) ((GroupServletItemProvider) selection).getJavaEEObject();
			return ProjectUtilities.getProject(webApp);
		}
		
		return super.getExtendedSelectedProject(selection);
	}
	
	@Override
	protected void handleClassButtonSelected() {
		getControl().setCursor(new Cursor(getShell().getDisplay(), SWT.CURSOR_WAIT));
		try {
			IProject project = (IProject) model.getProperty(PROJECT);
			
			if (project == null) {
				// show info message
				return;
			}
			
			IVirtualComponent component = ComponentCore.createComponent(project);
			MultiSelectFilteredFileSelectionDialog ms = new MultiSelectFilteredFileSelectionDialog(
					getShell(),
					NEW_SERVLET_WIZARD_WINDOW_TITLE,
					CHOOSE_SERVLET_CLASS, 
					JSPEXTENSIONS, 
					false, 
					project);
			IContainer root = component.getRootFolder().getUnderlyingFolder();
			ms.setInput(root);
			ms.open();
			if (ms.getReturnCode() == Window.OK) {
				String qualifiedClassName = ""; //$NON-NLS-1$
				if (ms.getSelectedItem() == MultiSelectFilteredFileSelectionDialog.JSP) {
					Object obj = ms.getFirstResult();
					if (obj != null) {
						if (obj instanceof IFile) {
							IFile file = (IFile) obj;
							IPath pFull = file.getFullPath();
							IPath pBase = root.getFullPath();
							IPath path = pFull.removeFirstSegments(pBase.segmentCount());
							qualifiedClassName = path.makeAbsolute().toString();
							model.setProperty(IS_SERVLET_TYPE, new Boolean(false));
						}
					}
				} 
				else {
					IType type = (IType) ms.getFirstResult();
					if (type != null) {
						qualifiedClassName = type.getFullyQualifiedName();
						model.setProperty(IS_SERVLET_TYPE, new Boolean(true));
					}
				}
				existingClassText.setText(qualifiedClassName);
			}
		} finally {
			getControl().setCursor(null);
		}
	}
	
	@Override
	protected Composite createTopLevelComposite(Composite parent) {
		Composite composite = super.createTopLevelComposite(parent);
		
		Object obj = getSelectedObject();
		if (isServlet(obj)) {
			checkExistingButton(true);
			if (isServletJSP(obj)) {
				existingClassText.setText(getServletJSPFile(obj));
				model.setBooleanProperty(IS_SERVLET_TYPE, false);
			} else {
				existingClassText.setText(getServletClass(obj));
				model.setBooleanProperty(IS_SERVLET_TYPE, true);
			}
		} else if (isJSP(obj)) {
			checkExistingButton(true);
			existingClassText.setText(getWebResourcePath((IResource) obj));
			model.setBooleanProperty(IS_SERVLET_TYPE, false);
		}
		
		return composite;
	}

}