/*******************************************************************************
 * Copyright (c) 2006 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
 *******************************************************************************/
package org.eclipse.ui.examples.views.properties.tabbed.logic;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.ObjectOutputStream;

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.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;

import org.eclipse.core.resources.IFile;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.dialogs.WizardNewFileCreationPage;
import org.eclipse.ui.ide.IDE;

import org.eclipse.gef.examples.logicdesigner.model.LogicDiagram;
import org.eclipse.gef.examples.logicdesigner.model.LogicDiagramFactory;

public class LogicWizardPage1
    extends WizardNewFileCreationPage
    implements SelectionListener {

    private IWorkbench workbench;

    private static int exampleCount = 1;

    private Button model1 = null;

    private Button model2 = null;

    private int modelSelected = 1;

    public LogicWizardPage1(IWorkbench aWorkbench,
            IStructuredSelection selection) {
        super("sampleLogicPage1", selection); //$NON-NLS-1$
        this.setTitle("Tabbed Properties View Logic Example");//$NON-NLS-1$
        this
            .setDescription("Create a new Tabbed Properties View Logic Example file");//$NON-NLS-1$
        this.setImageDescriptor(ImageDescriptor.createFromFile(getClass(),
            "icons/logicbanner.gif")); //$NON-NLS-1$
        this.workbench = aWorkbench;
    }

    public void createControl(Composite parent) {
        super.createControl(parent);
        this
            .setFileName("emptyModel" + exampleCount + ".tabbedpropertieslogic"); //$NON-NLS-2$//$NON-NLS-1$

        Composite composite = (Composite) getControl();

        // sample section generation group
        Group group = new Group(composite, SWT.NONE);
        group.setLayout(new GridLayout());
        group.setText("Logic Model Samples"); //$NON-NLS-1$
        group.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL
            | GridData.HORIZONTAL_ALIGN_FILL));

        // sample section generation checkboxes
        model1 = new Button(group, SWT.RADIO);
        model1.setText("E&mpty Model");//$NON-NLS-1$
        model1.addSelectionListener(this);
        model1.setSelection(true);

        model2 = new Button(group, SWT.RADIO);
        model2.setText("F&our-bit Adder Model");//$NON-NLS-1$
        model2.addSelectionListener(this);

        new Label(composite, SWT.NONE);

        setPageComplete(validatePage());
    }

    protected InputStream getInitialContents() {
        LogicDiagram ld = new LogicDiagram();
        if (modelSelected == 2)
            ld = (LogicDiagram) LogicDiagramFactory.createLargeModel();
        ByteArrayInputStream bais = null;
        try {
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            ObjectOutputStream oos = new ObjectOutputStream(baos);
            oos.writeObject(ld);
            oos.flush();
            oos.close();
            baos.close();
            bais = new ByteArrayInputStream(baos.toByteArray());
            bais.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return bais;
    }

    public boolean finish() {
        IFile newFile = createNewFile();
        if (newFile == null)
            return false; // ie.- creation was unsuccessful

        // Since the file resource was created fine, open it for editing
        // iff requested by the user
        try {
            IWorkbenchWindow dwindow = workbench.getActiveWorkbenchWindow();
            IWorkbenchPage page = dwindow.getActivePage();
            if (page != null)
                IDE.openEditor(page, newFile, true);
        } catch (org.eclipse.ui.PartInitException e) {
            e.printStackTrace();
            return false;
        }
        exampleCount++;
        return true;
    }

    /**
     * @see org.eclipse.swt.events.SelectionListener#widgetSelected(SelectionEvent)
     */
    public void widgetSelected(SelectionEvent e) {
        if (e.getSource() == model1) {
            modelSelected = 1;
            setFileName("emptyModel" + exampleCount + ".tabbedpropertieslogic"); //$NON-NLS-2$//$NON-NLS-1$
        } else {
            modelSelected = 2;
            setFileName("fourBitAdder" + exampleCount + ".tabbedpropertieslogic"); //$NON-NLS-2$//$NON-NLS-1$
        }
    }

    /**
     * Empty method
     */
    public void widgetDefaultSelected(SelectionEvent e) {
        //
    }

}