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.ui.element;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Collections;

import java.util.List;

import java.util.Map;

import org.eclipse.core.runtime.IStatus;

import org.eclipse.jface.util.PropertyChangeEvent;

import org.eclipse.jface.wizard.WizardDialog;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.SelectionAdapter;

import org.eclipse.swt.events.SelectionEvent;

import org.eclipse.swt.events.SelectionListener;

import org.eclipse.swt.widgets.Button;

import eu.etaxonomy.cdm.model.common.Language;

import eu.etaxonomy.cdm.model.common.LanguageString;

import eu.etaxonomy.cdm.model.common.MultilanguageTextHelper;

import eu.etaxonomy.taxeditor.model.DefaultTermComparator;

import eu.etaxonomy.taxeditor.preference.PreferencesUtil;

import eu.etaxonomy.taxeditor.store.CdmStore;

import eu.etaxonomy.taxeditor.store.StoreUtil;

import eu.etaxonomy.taxeditor.ui.combo.TermComboElement;

import eu.etaxonomy.taxeditor.ui.translation.TranslationWizard;

/**

 * <p>

 * MultilanguageTextElement class.

 * </p>

 * 

 * @author n.hoffmann

 * @created Sep 29, 2010

 * @version 1.0

 */

public class MultilanguageTextElement extends AbstractCdmFormElement implements

		SelectionListener {

	private class OpenTranslationWizard extends SelectionAdapter {

		public OpenTranslationWizard() {

			super();

		}

		/*

		 * (non-Javadoc)

		 * 

		 * @see

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

		 * .swt.events.SelectionEvent)

		 */

		@Override

		public void widgetSelected(SelectionEvent e) {

			Map<Language, LanguageString> multilanguageText = getMultilanguageText();

			if (multilanguageText == null){

				StoreUtil.warningDialog("No text to transalte", getClass(), "The text is empty and therefore can not be translated");

			}

			TranslationWizard wizard = new TranslationWizard(multilanguageText);

			WizardDialog dialog = new WizardDialog(getLayoutComposite()

					.getShell(), wizard);

			if (dialog.open() == IStatus.OK) {

				combo_language.setTerms(getLanguages());

				updateControls();

			}

		}

	}

	private TermComboElement<Language> combo_language;

	protected LanguageStringWithLabelElement element_languageString;

	private Button button;

	private Map<Language, LanguageString> multilanguageText;

	/**

	 * <p>

	 * Constructor for MultilanguageTextElement.

	 * </p>

	 * 

	 * @param formFactory

	 *            a {@link eu.etaxonomy.taxeditor.ui.element.CdmFormFactory}

	 *            object.

	 * @param formElement

	 *            a {@link eu.etaxonomy.taxeditor.ui.element.ICdmFormElement}

	 *            object.

	 * @param labelString

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

	 * @param multilanguageText

	 *            a {@link java.util.Map} object.

	 * @param textHeight

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

	 * @param style

	 *            a int.

	 */

	public MultilanguageTextElement(CdmFormFactory formFactory,

			ICdmFormElement formElement, String labelString,

			Map<Language, LanguageString> multilanguageText,

			Integer textHeight, int style) {

		super(formFactory, formElement);

		formFactory.addPropertyChangeListener(this);

		element_languageString = this.formFactory

				.createLanguageStringWithLabelElement(formElement, labelString,

						null, textHeight, style);

		if (PreferencesUtil.isMultilanguageTextEditingCapability()) {

			createMultilanguageTextEditingElements(formElement,

					multilanguageText, style);

		}

		setMultilanguageText(multilanguageText);

	}

	private void createMultilanguageTextEditingElements(

			ICdmFormElement formElement,

			Map<Language, LanguageString> multilanguageText, int style) {

		combo_language = formFactory

				.createTermComboElement(Language.class, formElement,

						"", null, style);

		combo_language.addSelectionListener(this);

		addControl(formFactory.createLabel(getLayoutComposite(), ""));

		button = formFactory.createButton(getLayoutComposite(),

				"Open In Translation Editor", SWT.PUSH);

		addControl(button);

		button.setLayoutData(LayoutConstants.RIGHT());

		button.addSelectionListener(new OpenTranslationWizard());

	}

	private List<Language> getLanguages() {

		ArrayList<Language> languageList = new ArrayList<Language>(

				getMultilanguageText().keySet());

		Collections.sort(languageList, new DefaultTermComparator<Language>());

		return languageList;

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see

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

	 * .events.SelectionEvent)

	 */

	/** {@inheritDoc} */

	@Override

	public void widgetSelected(SelectionEvent e) {

		Language selectedLanguage = combo_language.getSelection();

		if (selectedLanguage != null) {

			LanguageString selectedLanguageString = getMultilanguageText().get(

					selectedLanguage);

			element_languageString.setLanguageString(selectedLanguageString);

		}

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see

	 * org.eclipse.swt.events.SelectionListener#widgetDefaultSelected(org.eclipse

	 * .swt.events.SelectionEvent)

	 */

	/** {@inheritDoc} */

	@Override

	public void widgetDefaultSelected(SelectionEvent e) {

	}

	/**

	 * <p>

	 * Setter for the field <code>multilanguageText</code>.

	 * </p>

	 * 

	 * @param multilanguageText

	 *            the multilanguageText to set

	 */

	public void setMultilanguageText(

			Map<Language, LanguageString> multilanguageText) {

		this.multilanguageText = multilanguageText;

		if (multilanguageText != null) {

			if (multilanguageText.isEmpty()) {

				multilanguageText.put(

						CdmStore.getDefaultLanguage(),

						LanguageString.NewInstance("",

								CdmStore.getDefaultLanguage()));

			}

			if (PreferencesUtil.isMultilanguageTextEditingCapability()) {

				combo_language.setTerms(getLanguages());

				button.setEnabled(false);

			}

			updateControls();

		}

	}

	/**

	 * 

	 */

	private void updateControls() {

		LanguageString preferredLanguageString = MultilanguageTextHelper

				.getPreferredLanguageString(getMultilanguageText(),

						Arrays.asList(new Language[] { CdmStore

								.getDefaultLanguage() }));

		element_languageString.setLanguageString(preferredLanguageString);

		if (PreferencesUtil.isMultilanguageTextEditingCapability()) {

			combo_language.setSelection(preferredLanguageString.getLanguage());

			button.setEnabled(true);

		}		

	}

	/**

	 * <p>

	 * Getter for the field <code>multilanguageText</code>.

	 * </p>

	 * 

	 * @return the multilanguageText

	 */

	public Map<Language, LanguageString> getMultilanguageText() {

		return multilanguageText;

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see

	 * eu.etaxonomy.taxeditor.forms.AbstractCdmFormElement#propertyChange(org

	 * .eclipse.jface.util.PropertyChangeEvent)

	 */

	/** {@inheritDoc} */

	@Override

	public void propertyChange(PropertyChangeEvent event) {

		if (event == null) {

			return;

		}

		Object eventSource = event.getSource();

		if (eventSource == element_languageString) {

			LanguageString languageString = ((LanguageStringWithLabelElement) eventSource)

					.getLanguageString();

			multilanguageText.put(languageString.getLanguage(), languageString);

			firePropertyChangeEvent(new CdmPropertyChangeEvent(this, event));

		}

	}

}