c8_selectionservice.parts.SamplePart.java Source code

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Here is the source code for c8_selectionservice.parts.SamplePart.java

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/*******************************************************************************
 * Copyright (c) 2010 - 2013 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 c8_selectionservice.parts;

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

import org.eclipse.e4.core.di.annotations.Optional;
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.e4.ui.services.IServiceConstants;
import org.eclipse.e4.ui.workbench.modeling.ESelectionService;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.TableViewer;
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.Shell;
import org.eclipse.swt.widgets.Text;

import c8_selectionservice.parts.model.Person;

public class SamplePart {
    private Text txtInput;
    private TableViewer tableViewer;

    @Inject
    private ESelectionService selectionService;

    @Inject
    private MDirtyable dirty;

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

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

        tableViewer = new TableViewer(parent);
        tableViewer.setLabelProvider(new LabelProvider() {
            @Override
            public String getText(Object element) {
                if (element instanceof Person) {
                    return ((Person) element).getName();
                }
                return "invalid object";
            }
        });
        tableViewer.getTable().setLayoutData(new GridData(GridData.FILL_BOTH));
        tableViewer.addSelectionChangedListener(new ISelectionChangedListener() {

            @Override
            public void selectionChanged(SelectionChangedEvent event) {
                IStructuredSelection selection = (IStructuredSelection) event.getSelection();
                selectionService.setSelection(selection.getFirstElement());
            }
        });
        initData(tableViewer);
    }

    private void initData(TableViewer tableViewer) {
        tableViewer.add(new Person("John"));
        tableViewer.add(new Person("Paul"));
        tableViewer.add(new Person("George"));
        tableViewer.add(new Person("Ringo"));
    }

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

    @Persist
    public void save() {
        tableViewer.add(new Person(txtInput.getText()));
        txtInput.setText("");
        dirty.setDirty(false);
    }

    @Inject
    public void itemSelected(Shell shell, @Optional @Named(IServiceConstants.ACTIVE_SELECTION) Person person) {
        if (person != null) {
            MessageDialog.openInformation(shell, "Item selected", "Name:" + person.getName());
        }
    }
}