EDIT

// $Id$

/**

 * Copyright (C) 2007 EDIT

 * European Distributed Institute of Taxonomy

 * http://www.e-taxonomy.eu

 *

 * The contents of this file are subject to the Mozilla Public License Version 1.1

 * See LICENSE.TXT at the top of this package for the full license terms.

 */

package eu.etaxonomy.taxeditor.io.wizard;

import java.lang.reflect.Method;

import java.util.ArrayList;

import java.util.Collections;

import java.util.Comparator;

import java.util.List;

import java.util.MissingResourceException;

import java.util.ResourceBundle;

import org.apache.commons.lang.StringUtils;

import org.eclipse.jface.wizard.WizardPage;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.SelectionAdapter;

import org.eclipse.swt.events.SelectionEvent;

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 eu.etaxonomy.cdm.io.common.IIoConfigurator;

import eu.etaxonomy.cdm.io.specimen.abcd206.in.Abcd206ImportConfigurator;

import eu.etaxonomy.taxeditor.model.MessagingUtils;

/**

 * <p>

 * GenericConfiguratorWizardPage class.

 * </p>

 *

 * @author n.hoffmann

 * @created 23.06.2009

 * @version 1.0

 */

public class GenericConfiguratorWizardPage extends WizardPage {

    private final IIoConfigurator configurator;

    private final ResourceBundle resourceBundle;

    /**

     * @param pageName

     * @param configurator

     */

    private GenericConfiguratorWizardPage(String pageName,

            IIoConfigurator configurator, String title, String description) {

        super(pageName);

        this.setTitle(title);

        this.setDescription(description);

        this.configurator = configurator;

        resourceBundle = getResourceBundle(configurator);

    }

    private ResourceBundle getResourceBundle(IIoConfigurator configurator){

        try{

            return ResourceBundle.getBundle(configurator.getClass().getName());

        }catch(MissingResourceException e){

            return null;

        }

    }

    /**

     * <p>

     * Import

     * </p>

     *

     * @param pageName

     *            a {@link java.lang.String} object.

     * @param configurator

     *            a {@link eu.etaxonomy.cdm.io.common.IIoConfigurator} object.

     * @return a

     *         {@link eu.etaxonomy.taxeditor.io.wizard.GenericConfiguratorWizardPage}

     *         object.

     */

    public static GenericConfiguratorWizardPage Import(String pageName,

            IIoConfigurator configurator) {

        return new GenericConfiguratorWizardPage(pageName, configurator,

                "Import Configuration", "Configure the import mechanism.");

    }

    /**

     * <p>

     * Export

     * </p>

     *

     * @param pageName

     *            a {@link java.lang.String} object.

     * @param configurator

     *            a {@link eu.etaxonomy.cdm.io.common.IIoConfigurator} object.

     * @return a

     *         {@link eu.etaxonomy.taxeditor.io.wizard.GenericConfiguratorWizardPage}

     *         object.

     */

    public static GenericConfiguratorWizardPage Export(String pageName,

            IIoConfigurator configurator) {

        return new GenericConfiguratorWizardPage(pageName, configurator,

                "Export Configuration", "Configure the export mechanism.");

    }

    /*

     * (non-Javadoc)

     *

     * @see

     * org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets

     * .Composite)

     */

    /** {@inheritDoc} */

    @Override

    public void createControl(Composite parent) {

        // ScrolledComposite scrolledComposite = new ScrolledComposite(parent,

        // SWT.H_SCROLL);

        // scrolledComposite.setLayout(new GridLayout());

        // TODO wrap this composite in a scrolled composite

        Composite composite = new Composite(parent, SWT.NULL);

        composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

        GridLayout gridLayout = new GridLayout();

        composite.setLayout(gridLayout);

        List<Method> methods = getConfiguratorsBooleanSetMethods(configurator);

        Collections.sort(methods, new Comparator<Method>() {

            /* (non-Javadoc)

             * @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)

             */

            @Override

            public int compare(Method o1, Method o2) {

                if(o1.getName()==null && o2.getName()!=null){

                    return -1;

                }

                if(o1.getName()!=null && o2.getName()==null){

                    return 1;

                }

                if(o1.getName()==null && o2.getName()==null){

                    return 0;

                }

                return o1.getName().compareTo(o2.getName());

            }

        });

        for (Method method : methods) {

            createCheckbox(composite, method, configurator);

        }

        // scrolledComposite.setContent(composite);

        setControl(composite);

    }

    private void createCheckbox(Composite parent, Method method,

            final IIoConfigurator configurator) {

        final String methodName = method.getName();

        final Button checkBox = new Button(parent, SWT.CHECK);

        if(configurator.getClass().equals(Abcd206ImportConfigurator.class)){

            String[] r = methodName.split("set")[1].split("(?=\\p{Upper})");

            checkBox.setText(getLabel(StringUtils.join(r," ")));

        }

        else{

            checkBox.setText(getLabel(methodName));

        }

        // retrieve the default values and set the checkbox accordingly

        boolean defaultSelection = executeBooleanGetMethod(configurator, "is"

                + methodName.substring(3));

        checkBox.setSelection(defaultSelection);

        checkBox.addSelectionListener(new SelectionAdapter() {

            /*

             * (non-Javadoc)

             *

             * @see

             * org.eclipse.swt.events.SelectionAdapter#widgetSelected(org.eclipse

             * .swt.events.SelectionEvent)

             */

            @Override

            public void widgetSelected(SelectionEvent e) {

                executeBooleanSetMethod(configurator, methodName,

                        checkBox.getSelection());

            }

        });

    }

    private String getLabel(String methodName){

        if(resourceBundle == null){

            return methodName;

        }

        try{

            return resourceBundle.getString(methodName);

        }catch(MissingResourceException e){

            return methodName;

        }

    }

    private boolean executeBooleanGetMethod(IIoConfigurator configurator,

            String methodName) {

        Class<? extends IIoConfigurator> configuratorClass = configurator

                .getClass();

        boolean result = false;

        Method[] methods = configuratorClass.getMethods();

        for (Method method : methods) {

            if (!method.getName().equals(methodName)) {

                continue;

            }

            try {

                Object returnType = method.invoke(configurator, null);

                if (returnType.getClass().equals(Boolean.class)) {

                    result = ((Boolean) returnType).booleanValue();

                }

                break;

            } catch (Exception e) {

                MessagingUtils.warn(this.getClass(), "Could not invoke method");

            }

        }

        return result;

    }

    private void executeBooleanSetMethod(IIoConfigurator configurator,

            String methodName, boolean selected) {

        Class<? extends IIoConfigurator> configuratorClass = configurator

                .getClass();

        Method[] methods = configuratorClass.getMethods();

        for (Method method : methods) {

            if (!method.getName().equals(methodName)) {

                continue;

            }

            try {

                method.invoke(configurator, selected);

                break;

            } catch (Exception e) {

                MessagingUtils.warn(this.getClass(), "Could not invoke method");

            }

        }

    }

    private List<Method> getConfiguratorsBooleanSetMethods(

            IIoConfigurator configurator) {

        List<Method> booleanMethods = new ArrayList<Method>();

        Class<? extends IIoConfigurator> configuratorClass = configurator

                .getClass();

        Method[] allMethods = configuratorClass.getMethods();

        for (Method method : allMethods) {

            if (method.getName().startsWith("set")) {

                Class<?>[] typeList = method.getParameterTypes();

                if (typeList.length > 1) {

                    new IllegalStateException(

                            "Found a setter with parameter count > 1");

                }

                if (typeList[0].getName().equals("boolean")) {

                    booleanMethods.add(method);

                }

            }

        }

        return booleanMethods;

    }

}