org.eclipse.emf.ecp.controls.vaadin.internal.ReferenceListVaadinRenderer.java Source code

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Here is the source code for org.eclipse.emf.ecp.controls.vaadin.internal.ReferenceListVaadinRenderer.java

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/*******************************************************************************
 * Copyright (c) 2014 Dennis Melzer and others.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 * Dennis - initial API and implementation
 ******************************************************************************/
package org.eclipse.emf.ecp.controls.vaadin.internal;

import org.eclipse.core.databinding.observable.list.IListChangeListener;
import org.eclipse.core.databinding.observable.list.IObservableList;
import org.eclipse.core.databinding.observable.list.ListChangeEvent;
import org.eclipse.emf.common.notify.AdapterFactory;
import org.eclipse.emf.databinding.EMFDataBindingContext;
import org.eclipse.emf.databinding.EMFUpdateValueStrategy;
import org.eclipse.emf.databinding.edit.EMFEditProperties;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature.Setting;
import org.eclipse.emf.ecp.view.core.vaadin.TableListDiffVisitor;
import org.eclipse.emf.ecp.view.core.vaadin.VaadinWidgetFactory;
import org.eclipse.emf.ecp.view.core.vaadin.converter.SelectionConverter;
import org.eclipse.emf.ecp.view.model.common.edit.provider.CustomReflectiveItemProviderAdapterFactory;
import org.eclipse.emf.ecp.view.spi.model.VView;
import org.eclipse.emf.ecp.view.spi.provider.ViewProviderHelper;
import org.eclipse.emf.edit.provider.AdapterFactoryItemDelegator;
import org.eclipse.emf.edit.provider.ComposedAdapterFactory;
import org.lunifera.runtime.web.vaadin.databinding.VaadinObservables;

import com.vaadin.data.util.IndexedContainer;
import com.vaadin.ui.Alignment;
import com.vaadin.ui.Button;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.Table;
import com.vaadin.ui.Table.ColumnGenerator;
import com.vaadin.ui.VerticalLayout;

/**
 * The Vaadin Renderer for a reference (ERefernce).
 *
 * @author Dennis Melzer
 *
 */
public class ReferenceListVaadinRenderer extends AbstractVaadinList {

    private static final String TABLE_BUTTON_TOOLBAR_STYLE = "table-button-toolbar"; //$NON-NLS-1$

    private static final String LINK_COLUMN = "link"; //$NON-NLS-1$

    private ComposedAdapterFactory composedAdapterFactory;
    private AdapterFactoryItemDelegator adapterFactoryItemDelegator;

    @Override
    public void renderList(VerticalLayout layout) {
        composedAdapterFactory = new ComposedAdapterFactory(
                new AdapterFactory[] { new CustomReflectiveItemProviderAdapterFactory(),
                        new ComposedAdapterFactory(ComposedAdapterFactory.Descriptor.Registry.INSTANCE) });
        adapterFactoryItemDelegator = new AdapterFactoryItemDelegator(composedAdapterFactory);
        createLinkColumn();
        bindTable();
        layout.addComponent(getToolbar());
        layout.addComponent(getTable());
        layout.setData(getTable());
        layout.setComponentAlignment(getToolbar(), Alignment.TOP_RIGHT);
    }

    private void bindTable() {
        final Setting setting = getSetting();
        final IObservableList targetValue = VaadinObservables.observeContainerItemSetContents(getTable(),
                setting.getEObject().getClass());
        targetValue.addListChangeListener(new IListChangeListener() {

            @Override
            public void handleListChange(ListChangeEvent event) {
                event.diff.accept(new TableListDiffVisitor(ReferenceListVaadinRenderer.this.getTable()));
            }
        });
        final IObservableList modelValue = EMFEditProperties
                .list(getEditingDomain(setting), setting.getEStructuralFeature()).observe(setting.getEObject());
        final EMFDataBindingContext dataBindingContext = new EMFDataBindingContext();
        dataBindingContext.bindList(targetValue, modelValue);
        final EMFUpdateValueStrategy emfUpdateValueStrategy = new EMFUpdateValueStrategy();
        emfUpdateValueStrategy.setConverter(new SelectionConverter());
    }

    private void createLinkColumn() {
        getTable().addGeneratedColumn(LINK_COLUMN, new ColumnGenerator() {

            @Override
            public Object generateCell(Table source, Object itemId, Object columnId) {
                if (!(itemId instanceof EObject)) {
                    return null;
                }
                final VView view = ViewProviderHelper.getView((EObject) itemId, null);
                final String text = adapterFactoryItemDelegator.getText(itemId);
                if (view == null) {
                    return text;
                }

                return VaadinWidgetFactory.createEditLink((EObject) itemId, text);
            }
        });
    }

    @Override
    protected HorizontalLayout createToolbar() {
        final HorizontalLayout horizontalLayout = new HorizontalLayout();
        if (hasCaption()) {
            horizontalLayout.addStyleName(TABLE_BUTTON_TOOLBAR_STYLE);
        }

        final Button add = VaadinWidgetFactory.createTableAddButton(getSetting(), getTable());
        horizontalLayout.addComponent(add);
        return horizontalLayout;
    }

    @Override
    public void dispose() {
        if (composedAdapterFactory != null) {
            composedAdapterFactory.dispose();
        }
        composedAdapterFactory = null;
        super.dispose();
    }

    @Override
    protected void createContainerProperty(IndexedContainer container) {
        container.addContainerProperty(LINK_COLUMN, Button.class, null);
        container.addContainerProperty(REMOVE_COLUMN, Button.class, null);

    }

    /**
     * {@inheritDoc}
     *
     * @see org.eclipse.emf.ecp.controls.vaadin.AbstractVaadinSimpleControlRenderer#getUnsetLabel()
     */
    @Override
    protected String getUnsetLabel() {
        // TODO Auto-generated method stub
        return super.getUnsetLabel();
    }
}