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.view;

import java.util.Collection;

import org.eclipse.core.runtime.IProgressMonitor;

import org.eclipse.jface.action.GroupMarker;

import org.eclipse.jface.action.MenuManager;

import org.eclipse.jface.viewers.ArrayContentProvider;

import org.eclipse.jface.viewers.IBaseLabelProvider;

import org.eclipse.jface.viewers.ISelection;

import org.eclipse.jface.viewers.TableViewer;

import org.eclipse.jface.viewers.Viewer;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.FocusAdapter;

import org.eclipse.swt.events.FocusEvent;

import org.eclipse.swt.layout.FillLayout;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Control;

import org.eclipse.swt.widgets.Menu;

import org.eclipse.ui.IMemento;

import org.eclipse.ui.IWorkbenchActionConstants;

import org.eclipse.ui.IWorkbenchPart;

import eu.etaxonomy.cdm.api.conversation.ConversationHolder;

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

import eu.etaxonomy.cdm.persistence.hibernate.CdmDataChangeMap;

import eu.etaxonomy.taxeditor.model.ContextListenerAdapter;

import eu.etaxonomy.taxeditor.model.IContextListener;

import eu.etaxonomy.taxeditor.store.CdmStore;

/**

 * @author n.hoffmann

 * @created Feb 16, 2011

 * @version 1.0

 */

public abstract class AbstractAccountViewPart<T> extends AbstractCdmViewPart {

	private class ContextListener extends ContextListenerAdapter{

		/* (non-Javadoc)

		 * @see eu.etaxonomy.taxeditor.model.IContextListener#contextStop(org.eclipse.ui.IMemento, org.eclipse.core.runtime.IProgressMonitor)

		 */

		@Override

		public void contextStop(IMemento memento, IProgressMonitor monitor) {

			monitor.subTask("Shutting down User View");

			viewer.setInput(null);

		}

		/* (non-Javadoc)

		 * @see eu.etaxonomy.taxeditor.model.IContextListener#contextStart(org.eclipse.ui.IMemento, org.eclipse.core.runtime.IProgressMonitor)

		 */

		@Override

		public void contextStart(IMemento memento, IProgressMonitor monitor) {

			monitor.subTask("Initiating User View");

			viewer.setInput(getInput());

		}

	}

	private ConversationHolder conversation;

	protected TableViewer viewer;

	private IContextListener contextListener;

	/* (non-Javadoc)

	 * @see org.eclipse.ui.part.WorkbenchPart#createPartControl(org.eclipse.swt.widgets.Composite)

	 */

	/** {@inheritDoc} */

	@Override

	public void createPartControl(Composite parent) {

		contextListener = new ContextListener();

		CdmStore.getContextManager().addContextListener(contextListener);

		FillLayout fillLayout = new FillLayout();

		fillLayout.marginWidth = 0;

		fillLayout.marginHeight = 0;

		fillLayout.type = SWT.VERTICAL;	

		parent.setLayout(fillLayout);

		viewer = new TableViewer(parent, SWT.MULTI | SWT.H_SCROLL

				| SWT.V_SCROLL | SWT.FULL_SELECTION);

		getSite().setSelectionProvider(viewer);

		createColumns(viewer);

		MenuManager menuMgr = new MenuManager();

		menuMgr.add(new GroupMarker(IWorkbenchActionConstants.MB_ADDITIONS));

		getSite().registerContextMenu(menuMgr, viewer);

		Control control = viewer.getControl();

		Menu menu = menuMgr.createContextMenu(control);

		control.setMenu(menu);	

		viewer.setContentProvider(new ArrayContentProvider());

		viewer.setLabelProvider(getLabelProvider());

		if(CdmStore.isActive()){

			viewer.setInput(getInput());

		}

		this.addListenerObject(new FocusAdapter() {

			/* (non-Javadoc)

			 * @see org.eclipse.swt.events.FocusAdapter#focusGained(org.eclipse.swt.events.FocusEvent)

			 */

			@Override

			public void focusGained(FocusEvent e) {

				super.focusGained(e);

				getConversationHolder().bind();

				viewer.getControl().setFocus();

			}

		});

	}

	/**

	 * @return

	 */

	protected abstract IBaseLabelProvider getLabelProvider();

	/**

	 * @param viewer2

	 */

	protected abstract void createColumns(TableViewer viewer);

	/**

	 * @return the contextListener

	 */

	public IContextListener getContextListener() {

		if(contextListener == null){

			throw new IllegalStateException("Context listener was not initialized");

		}

		return contextListener;

	}

	/* (non-Javadoc)

	 * @see eu.etaxonomy.cdm.persistence.hibernate.ICdmPostDataChangeObserver#update(eu.etaxonomy.cdm.persistence.hibernate.CdmDataChangeMap)

	 */

	@Override

	public void update(CdmDataChangeMap changeEvents) {

		// data changes can only be generate here at the moment

	}

	/* (non-Javadoc)

	 * @see eu.etaxonomy.taxeditor.operation.IPostOperationEnabled#postOperation(eu.etaxonomy.cdm.model.common.CdmBase)

	 */

	@Override

	public boolean postOperation(CdmBase objectAffectedByOperation) {

		if(CdmStore.isActive()){

			viewer.setInput(getInput());

			viewer.refresh();

		}

		return true;

	}

	/**

	 * @return

	 */

	public abstract Collection getInput();

	/* (non-Javadoc)

	 * @see org.eclipse.ui.part.WorkbenchPart#dispose()

	 */

	@Override

	public void dispose() {

		CdmStore.getContextManager().removeContextListener(getContextListener());

		super.dispose();

	}

	@Override

	public void selectionChanged(IWorkbenchPart part, ISelection selection) {

		// TODO Auto-generated method stub

	}

	@Override

	public Viewer getViewer() {

		return viewer;

	}

	@Override

	public void createViewer(Composite parent) {

		// TODO Auto-generated method stub

	}

	@Override

	public void changed(Object object) {

		// do nothing

	}

	@Override

	public boolean onComplete() {

		return true;

	}

}