package com.weecode.plugin.comics.ui.editors;

import java.util.List;

import org.eclipse.core.databinding.DataBindingContext;
import org.eclipse.core.databinding.beans.BeansObservables;
import org.eclipse.core.databinding.observable.list.WritableList;
import org.eclipse.core.databinding.observable.map.IObservableMap;
import org.eclipse.core.databinding.observable.value.IObservableValue;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jface.databinding.swt.SWTObservables;
import org.eclipse.jface.databinding.viewers.ObservableListContentProvider;
import org.eclipse.jface.databinding.viewers.ObservableMapLabelProvider;
import org.eclipse.jface.databinding.viewers.ViewersObservables;
import org.eclipse.jface.viewers.ComboViewer;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorSite;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.part.EditorPart;

import com.weecode.plugin.comics.model.TitleEditorModel;
import com.weecode.plugin.comics.model.eo.Publisher;
import com.weecode.plugin.comics.model.eo.Title;
/**
 * 
 * @author Jason Kusnier and Tim Hollosy
 *
 */
public class TitleEditor extends EditorPart {

	private ComboViewer comboViewer;
	private Combo combo;
	private Text formatText;
	private Text nameText;
	private Button editButton;
	private TableViewer tableViewer;
	private Table table;
	private DataBindingContext m_bindingContext;
	private Text publisherNameText;
	public static final String ID = "com.weecode.plugin.comics.ui.editors.TitleEditor"; //$NON-NLS-1$
	private TitleEditorModel model;
	private Title title;
	private List<Publisher> allPublishers;

	private Display display;
	private WritableList titleList;
	


	@Override
	public void dispose() {
	
		m_bindingContext.dispose();

		super.dispose();
	}

	/**
	 * Create contents of the editor part
	 * @param parent
	 */
	@Override
	public void createPartControl(Composite parent) {
		display = parent.getDisplay();

		Composite container = new Composite(parent, SWT.NONE);
		final GridLayout gridLayout = new GridLayout();
		gridLayout.numColumns = 2;
		container.setLayout(gridLayout);

		final Label nameLabel = new Label(container, SWT.NONE);
		nameLabel.setText("Name:");

		nameText = new Text(container, SWT.BORDER);
		final GridData gd_nameText = new GridData(SWT.FILL, SWT.CENTER, true, false);
		nameText.setLayoutData(gd_nameText);

		final Label formatLabel = new Label(container, SWT.NONE);
		formatLabel.setText("Format:");

		formatText = new Text(container, SWT.BORDER);
		final GridData gd_formatText = new GridData(SWT.FILL, SWT.CENTER, true, false);
		formatText.setLayoutData(gd_formatText);

		final Label publisherLabel = new Label(container, SWT.NONE);
		publisherLabel.setText("Publisher");

		comboViewer = new ComboViewer(container, SWT.READ_ONLY);
		comboViewer.addSelectionChangedListener(new ISelectionChangedListener() {
			public void selectionChanged(final SelectionChangedEvent event) {
				firePropertyChange(PROP_DIRTY);
			}
		});
		combo = comboViewer.getCombo();
		combo.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
		m_bindingContext = initDataBindings();

	}

	@Override
	public void setFocus() {
		// Set the focus
	}

	@Override
	public void doSave(IProgressMonitor monitor) {
		model.save();
		firePropertyChange(PROP_DIRTY);
	}

	@Override
	public void doSaveAs() {
		// Do the Save As operation
	}

	@Override
	public void init(IEditorSite site, IEditorInput input) throws PartInitException {
		TitleEditorInput myInput = (TitleEditorInput)input;
		model = new TitleEditorModel();
		
		//tell our persistence context which title we're intersted in.
		title = model.findTitle(myInput.getTitle());
		allPublishers = myInput.getAllPublishers();
		setSite(site);
		setInput(input);
	}

	@Override
	public boolean isDirty() {
		return model.isDirty();
	}

	@Override
	public boolean isSaveAsAllowed() {
		return false;
	}
	protected DataBindingContext initDataBindings() {
		IObservableValue titleFormatObserveValue = BeansObservables.observeValue(title, "format");
		IObservableValue titleNameObserveValue = BeansObservables.observeValue(title, "name");
		IObservableValue comboViewerSelectionObserveSelection = ViewersObservables.observeSingleSelection(comboViewer);
		IObservableValue formatTextTextObserveWidget = SWTObservables.observeText(formatText, SWT.Modify);
		IObservableValue titlePublisherObserveValue = BeansObservables.observeValue(title, "publisher");
		IObservableValue nameTextTextObserveWidget = SWTObservables.observeText(nameText, SWT.Modify);
		//
		ObservableListContentProvider comboViewerContentProviderList = new ObservableListContentProvider();
		comboViewer.setContentProvider(comboViewerContentProviderList);
		//
		IObservableMap[] comboViewerLabelProviderMaps = BeansObservables.observeMaps(comboViewerContentProviderList.getKnownElements(), Publisher.class, new String[]{"name"});
		comboViewer.setLabelProvider(new ObservableMapLabelProvider(comboViewerLabelProviderMaps));
		//
		WritableList allPublishersWritableList = new WritableList(allPublishers, Publisher.class);
		comboViewer.setInput(allPublishersWritableList);
		//
		DataBindingContext bindingContext = new DataBindingContext();
		//
		bindingContext.bindValue(nameTextTextObserveWidget, titleNameObserveValue, null, null);
		bindingContext.bindValue(formatTextTextObserveWidget, titleFormatObserveValue, null, null);
		bindingContext.bindValue(comboViewerSelectionObserveSelection, titlePublisherObserveValue, null, null);
		//
		return bindingContext;
	}

	


}