EDIT

// $Id$

/**

* Copyright (C) 2013 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.editor.view.dataimport;

import java.util.Collection;

import org.eclipse.core.runtime.IProgressMonitor;

import org.eclipse.jface.action.MenuManager;

import org.eclipse.jface.viewers.TableViewer;

import org.eclipse.swt.SWT;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Control;

import org.eclipse.swt.widgets.Menu;

import org.eclipse.swt.widgets.Table;

import org.eclipse.swt.widgets.TableItem;

import org.eclipse.ui.IEditorInput;

import org.eclipse.ui.IEditorSite;

import org.eclipse.ui.IMemento;

import org.eclipse.ui.PartInitException;

import org.eclipse.ui.part.EditorPart;

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

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

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

import eu.etaxonomy.taxeditor.model.IContextListener;

import eu.etaxonomy.taxeditor.model.IDirtyMarkableSelectionProvider;

import eu.etaxonomy.taxeditor.model.IPartContentHasDetails;

import eu.etaxonomy.taxeditor.model.IPartContentHasFactualData;

import eu.etaxonomy.taxeditor.model.IPartContentHasSupplementalData;

import eu.etaxonomy.taxeditor.store.CdmStore;

/**

 * Editor which shows a list of "data" that can be imported into the CDM

 * @author pplitzner

 * @date 20.09.2013

 *

 */

public abstract class DataImportEditor<T> extends EditorPart implements IPartContentHasFactualData, IDirtyMarkableSelectionProvider,

IConversationEnabled, IPartContentHasDetails, IPartContentHasSupplementalData, IContextListener{

    private ConversationHolder conversation;

    private TableViewer tableViewer;

    /**

     * Constructs a new DataImportEditor and registers it to listen to context changes

     */

    public DataImportEditor() {

    }

    /* (non-Javadoc)

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

     */

    @Override

    public void createPartControl(Composite parent) {

        Table table = new Table(parent, SWT.BORDER | SWT.MULTI | SWT.FULL_SELECTION);

        table.setHeaderVisible(true);//TODO: set header title as query

        table.setLinesVisible(true);

        tableViewer = new TableViewer(table);

        // Propagate selection from viewer

        getSite().setSelectionProvider(tableViewer);

        //create context menu

        MenuManager menuManager = new MenuManager();

        getSite().registerContextMenu(menuManager, tableViewer);

        Control control = tableViewer.getControl();

        Menu menu = menuManager.createContextMenu(control);

        control.setMenu(menu);

    }

    /* (non-Javadoc)

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

     */

    @Override

    public void setFocus() {

        tableViewer.getControl().setFocus();

        //make sure to bind again if maybe in another view the conversation was unbound

        if(!conversation.isBound()){

            conversation.bind();

        }

    }

    /* (non-Javadoc)

     * @see org.eclipse.ui.texteditor.AbstractTextEditor#init(org.eclipse.ui.IEditorSite, org.eclipse.ui.IEditorInput)

     */

    @Override

    public void init(IEditorSite site, IEditorInput input) throws PartInitException {

        CdmStore.getContextManager().addContextListener(this);

        setSite(site);

        setInput(input);

        setPartName(input.getName());

        setTitleToolTip(input.getName());

        conversation = ((DataImportEditorInput<T>)input).getConversationHolder();

    }

    /* (non-Javadoc)

     * @see eu.etaxonomy.taxeditor.annotatedlineeditor.AnnotatedLineEditor#dispose()

     */

    @Override

    public void dispose() {

        super.dispose();

        CdmStore.getContextManager().removeContextListener(this);

    }

    /* (non-Javadoc)

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

     */

    @Override

    public void contextAboutToStop(IMemento memento, IProgressMonitor monitor) {

        //nothing

    }

    /* (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) {

        //nothing

    }

    /* (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) {

        //nothing

    }

    /* (non-Javadoc)

     * @see eu.etaxonomy.taxeditor.model.IContextListener#contextRefresh(org.eclipse.core.runtime.IProgressMonitor)

     */

    @Override

    public void contextRefresh(IProgressMonitor monitor) {

        IEditorInput editorInput = getEditorInput();

        setInput(editorInput);

        if(editorInput instanceof DataImportEditorInput){

            tableViewer.getTable().removeAll();

            Collection<T> results = ((DataImportEditorInput<T>) editorInput).getResults();

            if(results!=null){

                for(T item:results){

                    TableItem tableItem = new TableItem(tableViewer.getTable(), SWT.NONE);

                    tableItem.setText(getTextForTableItem(item));

                    tableItem.setData(item);

                }

            }

        }

    }

    /**

     * Returns the text label of the given item.

     * @param item the item for which the label should be returnes

     * @return the label of the item

     */

    protected abstract String getTextForTableItem(T item);

    /* (non-Javadoc)

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

     */

    @Override

    public void workbenchShutdown(IMemento memento, IProgressMonitor monitor) {

        if(conversation!=null && conversation.isBound() && !conversation.isClosed()) {

            conversation.close();

        }

    }

    /* (non-Javadoc)

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

     */

    @Override

    public void update(CdmDataChangeMap changeEvents) {

        //nothing

    }

    /* (non-Javadoc)

     * @see eu.etaxonomy.cdm.api.conversation.IConversationEnabled#getConversationHolder()

     */

    @Override

    public ConversationHolder getConversationHolder() {

        return conversation;

    }

    /* (non-Javadoc)

     * @see eu.etaxonomy.taxeditor.model.IDirtyMarkableSelectionProvider#changed(java.lang.Object)

     */

    @Override

    public void changed(Object element) {

        // cannot be changed

    }

    /* (non-Javadoc)

     * @see org.eclipse.ui.part.EditorPart#doSave(org.eclipse.core.runtime.IProgressMonitor)

     */

    @Override

    public void doSave(IProgressMonitor monitor) {

    }

    /* (non-Javadoc)

     * @see org.eclipse.ui.part.EditorPart#doSaveAs()

     */

    @Override

    public void doSaveAs() {

    }

    /* (non-Javadoc)

     * @see org.eclipse.ui.part.EditorPart#isDirty()

     */

    @Override

    public boolean isDirty() {

        return false;

    }

    /* (non-Javadoc)

     * @see org.eclipse.ui.part.EditorPart#isSaveAsAllowed()

     */

    @Override

    public boolean isSaveAsAllowed() {

        return false;

    }

}