org.eclipse.e4.examples.di.product.parts.SamplePart.java Source code

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Here is the source code for org.eclipse.e4.examples.di.product.parts.SamplePart.java

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/*******************************************************************************
 * Copyright (c) 2010, 2014 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *     Lars Vogel <lars.Vogel@gmail.com> - Bug 419770
 *******************************************************************************/
package org.eclipse.e4.examples.di.product.parts;

import java.util.Collection;
import java.util.HashSet;
import java.util.Set;

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.inject.Inject;

import org.eclipse.e4.core.contexts.ContextInjectionFactory;
import org.eclipse.e4.core.contexts.EclipseContextFactory;
import org.eclipse.e4.core.contexts.IEclipseContext;
import org.eclipse.e4.ui.di.Focus;
import org.eclipse.e4.ui.di.Persist;
import org.eclipse.e4.ui.model.application.ui.MDirtyable;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerComparator;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;

public class SamplePart {
    public static final String EXTENSION_POINT = "org.eclipse.e4.examples.di.product.authors";
    public static final String ELEMENT_AUTHOR = "author";
    public static final String ATTR_NAME = "name";
    public static final String ATTR_COMPANY = "companyName";

    private static class AuthorLabelProvider extends LabelProvider {
        @Override
        public String getText(Object element) {
            if (element instanceof AuthorCompany) {
                AuthorCompany ac = (AuthorCompany) element;
                return ac.name + ", " + ac.company;
            }
            return super.getText(element);
        }
    }

    private Text txtInput;
    private TableViewer tableViewer;
    private Set<AuthorCompany> pluginAuthors = new HashSet<AuthorCompany>();

    @Inject
    private IEclipseContext context;

    @Inject
    private MDirtyable dirty;

    private OldExtensionReader reader;
    private ExtensionReader extensionReader;

    @PostConstruct
    public void createComposite(Composite parent) {
        parent.setLayout(new GridLayout(1, false));

        txtInput = new Text(parent, SWT.BORDER);
        txtInput.setMessage("Enter text to mark part as dirty");
        txtInput.addModifyListener(new ModifyListener() {
            @Override
            public void modifyText(ModifyEvent e) {
                dirty.setDirty(true);
            }
        });
        txtInput.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

        Label info = new Label(parent, SWT.NONE);
        info.setText("Plug-in Authors:");

        tableViewer = new TableViewer(parent);

        tableViewer.setLabelProvider(new AuthorLabelProvider());
        tableViewer.setContentProvider(new IStructuredContentProvider() {

            @Override
            public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {

            }

            @Override
            public void dispose() {

            }

            @Override
            public Object[] getElements(Object inputElement) {
                if (inputElement instanceof Collection) {
                    return ((Collection) inputElement).toArray();
                }
                return null;
            }
        });
        tableViewer.getTable().setLayoutData(new GridData(GridData.FILL_BOTH));
        ViewerComparator comparator = new ViewerComparator();
        tableViewer.setComparator(comparator);

        // TODO 1.3 Call the extended object supplier
        createLegacyReader();
        // createDiReader();

        tableViewer.setInput(pluginAuthors);
    }

    private void createLegacyReader() {
        reader = new OldExtensionReader(pluginAuthors, tableViewer);
        reader.process();
    }

    private void createDiReader() {
        IEclipseContext staticContext = EclipseContextFactory.create();
        staticContext.set("myViewer", tableViewer);
        staticContext.set("myList", pluginAuthors);
        extensionReader = ContextInjectionFactory.make(ExtensionReader.class, context, staticContext);
        staticContext.dispose();
    }

    @Focus
    public void setFocus() {
        tableViewer.getTable().setFocus();
    }

    @Persist
    public void save() {
        dirty.setDirty(false);
    }

    @PreDestroy
    public void dispose() {
        if (reader != null) {
            reader.dispose();
        }
    }
}