net.lopezbobeda.rap.examples.mail.views.MainView.java Source code

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Here is the source code for net.lopezbobeda.rap.examples.mail.views.MainView.java

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/*******************************************************************************
 * Copyright (c) 2014 Edmundo Lopez Bobeda.
 * 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
 *
 ******************************************************************************/

package net.lopezbobeda.rap.examples.mail.views;

import java.io.IOException;
import java.io.InputStream;

import net.lopezbobeda.rap.examples.mail.model.Email;

import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.ColumnLabelProvider;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.TableViewerColumn;
import org.eclipse.rap.rwt.RWT;
import org.eclipse.rap.rwt.service.ResourceManager;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.SashForm;
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.Table;

/**
 * Represents the main view of the mail application.
 * 
 * @author mundacho
 *
 */
public class MainView {

    static private String folderImageLocation;

    public String getFolderImageLocation() {
        return folderImageLocation;
    }

    private void registerImages() {
        try {
            folderImageLocation = registerImage("folder.gif");
        } catch (IOException exception) {
            throw new RuntimeException("Failed to register images", exception);
        }
    }

    private static String registerImage(String resourceName) throws IOException {
        ResourceManager resourceManager = RWT.getResourceManager();
        if (!resourceManager.isRegistered(resourceName)) {
            InputStream inputStream = MainView.class.getClassLoader().getResourceAsStream(resourceName);
            if (inputStream == null) {
                throw new RuntimeException("Resource not found");
            }
            try {
                resourceManager.register(resourceName, inputStream);
            } finally {
                inputStream.close();
            }
        }
        return resourceManager.getLocation(resourceName);
    }

    public MainView(final Composite shell) {
        registerImages();
        final Composite parent = new SashForm(shell, SWT.HORIZONTAL | SWT.FILL);
        GridData theCompositeGridData = new GridData();
        theCompositeGridData.grabExcessHorizontalSpace = true;
        theCompositeGridData.grabExcessVerticalSpace = true;
        theCompositeGridData.horizontalAlignment = SWT.FILL;
        theCompositeGridData.verticalAlignment = SWT.FILL;
        parent.setLayoutData(theCompositeGridData);

        // GridLayout layout = new GridLayout(2, false);
        // parent.setLayout(layout);
        final TreeView label = new TreeView(parent);

        GridData labelGridData = new GridData();
        // labelGridData.verticalSpan = 2;
        labelGridData.grabExcessVerticalSpace = true;
        labelGridData.verticalAlignment = SWT.FILL;
        label.getViewer().getTree().setLayoutData(labelGridData);

        final Composite rightView = new Composite(parent, SWT.NONE);
        GridLayout rightViewLayout = new GridLayout(1, false);
        rightView.setLayout(rightViewLayout);

        TableViewer viewer = new TableViewer(rightView,
                SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL | SWT.FULL_SELECTION | SWT.BORDER | SWT.RESIZE);
        createColumns(viewer);

        final Table table = viewer.getTable();
        table.setHeaderVisible(true);
        table.setLinesVisible(true);
        GridData gridData = new GridData();
        gridData.grabExcessHorizontalSpace = true;
        gridData.horizontalAlignment = SWT.FILL;
        Email[] emails = new Email[] {
                new Email("edmundo@lopezbobeda.net", "jean.val.jean@miserable.fr", "Urgent!!", "Message 1"),
                new Email("diego.de.la.vega@lopezbobeda.net", "jean.val.jean@miserable.fr", "Plus Urgent!!",
                        "Message 2") };

        final Label placeHolder = new Label(rightView, SWT.NONE);
        placeHolder.setText("No message selected");

        table.setLayoutData(gridData);

        viewer.setContentProvider(ArrayContentProvider.getInstance());
        viewer.addSelectionChangedListener(new ISelectionChangedListener() {

            Composite mailView = null;

            @Override
            public void selectionChanged(SelectionChangedEvent event) {
                if (!placeHolder.isDisposed()) {
                    placeHolder.dispose();
                }
                if (mailView != null) {
                    mailView.dispose();
                }
                IStructuredSelection selection = (IStructuredSelection) event.getSelection();
                MessageView mv = new MessageView(rightView, (Email) selection.getFirstElement());
                mailView = mv.getView();
                rightView.layout();
            }
        });
        viewer.setInput(emails);
    }

    private void createColumns(TableViewer viewer) {
        TableViewerColumn colFrom = new TableViewerColumn(viewer, SWT.NONE);
        colFrom.getColumn().setWidth(200);
        colFrom.getColumn().setText("From");
        colFrom.setLabelProvider(new ColumnLabelProvider() {
            private static final long serialVersionUID = 1L;

            @Override
            public String getText(Object element) {
                Email email = (Email) element;
                return email.getSender();
            }
        });
        TableViewerColumn colTo = new TableViewerColumn(viewer, SWT.NONE);
        colTo.getColumn().setWidth(200);
        colTo.getColumn().setText("To");
        colTo.setLabelProvider(new ColumnLabelProvider() {
            private static final long serialVersionUID = 1L;

            @Override
            public String getText(Object element) {
                Email email = (Email) element;
                return email.getTo();
            }
        });
        TableViewerColumn colSubject = new TableViewerColumn(viewer, SWT.NONE);
        colSubject.getColumn().setWidth(200);
        colSubject.getColumn().setText("Subject");
        colSubject.setLabelProvider(new ColumnLabelProvider() {
            private static final long serialVersionUID = 1L;

            @Override
            public String getText(Object element) {
                Email email = (Email) element;
                return email.getSubject();
            }
        });
    }
}