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

import org.eclipse.core.databinding.DataBindingContext;
import org.eclipse.core.databinding.beans.BeansObservables;
import org.eclipse.core.databinding.observable.ChangeEvent;
import org.eclipse.core.databinding.observable.IChangeListener;
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.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.window.Window;
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 org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IEditorSite;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.part.EditorPart;

import com.weecode.plugin.comics.model.PublisherEditorModel;
import com.weecode.plugin.comics.model.eo.Publisher;
import com.weecode.plugin.comics.model.eo.Title;
import com.weecode.plugin.comics.ui.dialogs.TitleDialog;
/**
 * 
 * @author Jason Kusnier and Tim Hollosy
 *
 */
public class PublishersEditor extends EditorPart {

	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.PublishersEditor"; //$NON-NLS-1$
	private PublisherEditorModel model;
	private Publisher publisher;

	private Display display;
	private WritableList titleList;

	
	@Override
	public void dispose() {
		model.close();
		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 publisherNameLabel = new Label(container, SWT.NONE);
		publisherNameLabel.setText("Publisher Name:");

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


		final Group composite = new Group(container, SWT.NONE);
		composite.setText("Titles");
		composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 2, 1));
		final GridLayout gridLayout_1 = new GridLayout();
		gridLayout_1.numColumns = 2;
		composite.setLayout(gridLayout_1);

		tableViewer = new TableViewer(composite, SWT.VIRTUAL | SWT.FULL_SELECTION | SWT.BORDER);
		table = tableViewer.getTable();
		table.setLinesVisible(true);
		table.setHeaderVisible(true);
		table.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

		final TableColumn newColumnTableColumn = new TableColumn(table, SWT.NONE);
		newColumnTableColumn.setWidth(100);
		newColumnTableColumn.setText("Format");

		final TableColumn newColumnTableColumn_1 = new TableColumn(table, SWT.NONE);
		newColumnTableColumn_1.setWidth(100);
		newColumnTableColumn_1.setText("Name");

		final Composite composite_1 = new Composite(composite, SWT.NONE);
		composite_1.setLayout(new GridLayout());

		final Button addButton = new Button(composite_1, SWT.NONE);
		addButton.addSelectionListener(new SelectionAdapter() {
			@Override
			public void widgetSelected(final SelectionEvent e) {
				TitleDialog dialog = new TitleDialog(display.getActiveShell());
				if (dialog.open() == Window.OK) {
					Title title = dialog.getTitle();

					//establish fk relationship for weaving
					title.setPublisher(publisher);

					//Add to wrapped publisher list
					titleList.add(title);

					firePropertyChange(PROP_DIRTY);
				}
			}
		});
		addButton.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false));
		addButton.setText("Add");

		editButton = new Button(composite_1, SWT.NONE);
		editButton.addSelectionListener(new SelectionAdapter() {
			@Override
			public void widgetSelected(final SelectionEvent e) {
				IStructuredSelection sel = (IStructuredSelection)tableViewer.getSelection();
				Title title = (Title)sel.getFirstElement();
				TitleDialog dialog = new TitleDialog(display.getActiveShell(), title);
				if (dialog.open() == Window.OK) {
				
					firePropertyChange(PROP_DIRTY);
				}
			}
		});
		editButton.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false));
		editButton.setText("Edit");

		final Button deleteButton = new Button(composite_1, SWT.NONE);
		deleteButton.addSelectionListener(new SelectionAdapter() {
			@Override
			public void widgetSelected(final SelectionEvent e) {

				IStructuredSelection sel = (IStructuredSelection)tableViewer.getSelection();
				Title title = (Title)sel.getFirstElement();
				//not sure why, but we need to explicitly do a remove from the context
				//otherwise deletes will not fire, unlike inserts which the CascadeType.ALL
				//on the publishers entity takes care of.
				model.removeEntity(title);
				titleList.remove(title);
				firePropertyChange(PROP_DIRTY);
			}
		});
		deleteButton.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false));
		deleteButton.setText("Delete");
		new Label(container, SWT.NONE);

		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 {
		PublishersEditorInput myInput = (PublishersEditorInput)input;
		model = new PublisherEditorModel(myInput.getPublisher());
		publisher = model.getPublisher();

		setSite(site);
		setInput(input);
	}

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

	@Override
	public boolean isSaveAsAllowed() {
		return false;
	}
	protected DataBindingContext initDataBindings() {
		IObservableValue publisherNameObserveValue = BeansObservables.observeValue(publisher, "name");
		
		
		IObservableValue publisherNameTextTextObserveWidget = SWTObservables.observeText(publisherNameText, SWT.Modify);

		//
		ObservableListContentProvider tableViewerContentProviderList = new ObservableListContentProvider();
		tableViewer.setContentProvider(tableViewerContentProviderList);
		//
		IObservableMap[] tableViewerLabelProviderMaps = BeansObservables.observeMaps(tableViewerContentProviderList.getKnownElements(), Title.class, new String[]{"format", "name"});
		tableViewer.setLabelProvider(new ObservableMapLabelProvider(tableViewerLabelProviderMaps));
		//
		titleList = new WritableList(publisher.getTitles(),Title.class);
		tableViewer.setInput(titleList);
		//
		DataBindingContext bindingContext = new DataBindingContext();
		//
		bindingContext.bindValue(publisherNameTextTextObserveWidget, publisherNameObserveValue, null, null);
		//
	

	
		publisherNameObserveValue.addChangeListener(new IChangeListener() {
			@Override
			public void handleChange(ChangeEvent event) {
				firePropertyChange(IEditorPart.PROP_DIRTY);
			}
		});

		return bindingContext;
	}


}