RedditCrawlerView.java

package edu.usc.cssl.tacit.crawlers.reddit.ui;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IToolBarManager;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.layout.GridLayoutFactory;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.ScrolledComposite;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Group;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.forms.widgets.FormToolkit;
import org.eclipse.ui.forms.widgets.ScrolledForm;
import org.eclipse.ui.forms.widgets.Section;
import org.eclipse.ui.part.ViewPart;

import edu.usc.cssl.tacit.common.ui.composite.from.TacitFormComposite;
import edu.usc.cssl.tacit.common.ui.outputdata.OutputLayoutData;
import edu.usc.cssl.tacit.crawlers.reddit.ui.internal.IRedditCrawlerViewConstants;
import edu.usc.cssl.tacit.crawlers.reddit.ui.internal.RedditCrawlerViewImageRegistry;

public class RedditCrawlerView extends ViewPart implements IRedditCrawlerViewConstants{

	public static String ID = "edu.usc.cssl.tacit.crawlers.reddit.ui.redditview";
	
	private Button crawlTrendingDataButton;
	private ScrolledForm form;
	private FormToolkit toolkit;

	private Button crawlLabeledButton;

	private Button crawlSearchResultsButton;
	private OutputLayoutData outputLayout;
	
	@Override
	public void createPartControl(Composite parent) {
		toolkit = createFormBodySection(parent, "Reddit Crawler");
		Section section = toolkit.createSection(form.getBody(), Section.TITLE_BAR | Section.EXPANDED);
		GridDataFactory.fillDefaults().grab(true, false).span(3, 1).applyTo(section);
		section.setExpanded(true);

		// Create a composite to hold the other widgets
		ScrolledComposite sc = new ScrolledComposite(section, SWT.H_SCROLL | SWT.V_SCROLL);
		sc.setExpandHorizontal(true);
		sc.setExpandVertical(true);
		GridLayoutFactory.fillDefaults().numColumns(3).equalWidth(false).applyTo(sc);
	
		// Creates an empty to create a empty space
		TacitFormComposite.createEmptyRow(toolkit, sc);

		// Create a composite that can hold the other widgets
		Composite client = toolkit.createComposite(form.getBody());
		GridLayoutFactory.fillDefaults().equalWidth(true).numColumns(1).applyTo(client); // Align the composite section to one column
		GridDataFactory.fillDefaults().grab(true, false).span(1, 1).applyTo(client);		
		GridLayout layout = new GridLayout();// Layout creation
		layout.numColumns = 2;
		
		createCrawlGrop(toolkit, client);
		outputLayout = TacitFormComposite.createOutputSection(toolkit, client, form.getMessageManager());
		// Add run and help button on the toolbar
		addButtonsToToolBar();	
	}
	
	private void createCrawlGrop(final FormToolkit toolkit, final Composite parent) {

		Group buttonComposite = new Group(parent, SWT.LEFT);
		buttonComposite.setText("Crawl");
		//buttonComposite.setBackground(parent.getBackground());
		buttonComposite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
		GridLayout layout = new GridLayout();
		layout.numColumns = 3;
		buttonComposite.setLayout(layout);
		buttonComposite.setForeground(parent.getForeground());

		crawlTrendingDataButton = new Button(buttonComposite, SWT.RADIO);
		crawlTrendingDataButton.setText("Trending Data");
		crawlTrendingDataButton.setSelection(true);
		crawlTrendingDataButton.setForeground(parent.getForeground());
		crawlTrendingDataButton.addSelectionListener(new SelectionListener() {
			@Override
			public void widgetSelected(SelectionEvent arg0) {

			}

			@Override
			public void widgetDefaultSelected(SelectionEvent arg0) {
				// TODO Auto-generated method stub
			}
		});
		
		crawlLabeledButton = new Button(buttonComposite, SWT.RADIO);
		crawlLabeledButton.setText("Labeled Data");
		crawlLabeledButton.setSelection(false);
		crawlLabeledButton.setForeground(parent.getForeground());
		crawlLabeledButton.addSelectionListener(new SelectionListener() {
			@Override
			public void widgetSelected(SelectionEvent arg0) {

			}

			@Override
			public void widgetDefaultSelected(SelectionEvent arg0) {
				// TODO Auto-generated method stub
			}
		});
		
		crawlSearchResultsButton = new Button(buttonComposite, SWT.RADIO);
		crawlSearchResultsButton.setText("Search");
		crawlSearchResultsButton.setSelection(false);
		crawlSearchResultsButton.setForeground(parent.getForeground());
		crawlSearchResultsButton.addSelectionListener(new SelectionListener() {
			@Override
			public void widgetSelected(SelectionEvent arg0) {

			}

			@Override
			public void widgetDefaultSelected(SelectionEvent arg0) {
				// TODO Auto-generated method stub
			}
		});
		
	}
		
	/**
	 * 
	 * @param parent
	 * @param title
	 * @return - Creates a form body section for Naive Bayes Classifier
	 */
	private FormToolkit createFormBodySection(Composite parent, String title) {
		// Every interface requires a toolkit(Display) and form to store the components
		FormToolkit toolkit = new FormToolkit(parent.getDisplay());
		form = toolkit.createScrolledForm(parent);
		toolkit.decorateFormHeading(form.getForm());
		form.setText(title);
		GridLayoutFactory.fillDefaults().numColumns(1).equalWidth(true)
				.applyTo(form.getBody());
		return toolkit;
	}
	
	@Override
	public void setFocus() {
		form.setFocus();
		
	}

	
	private void addButtonsToToolBar() {
		IToolBarManager mgr = form.getToolBarManager();
		mgr.add(new Action() {
			@Override
			public ImageDescriptor getImageDescriptor() {
				return (RedditCrawlerViewImageRegistry.getImageIconFactory().getImageDescriptor(IMAGE_LRUN_OBJ));
			}
			@Override
			public String getToolTipText() {
				return "Crawl";
			}
			@Override
			public void run() {

			}
		});

		Action helpAction = new Action() {
			@Override
			public ImageDescriptor getImageDescriptor() {
				return (RedditCrawlerViewImageRegistry.getImageIconFactory().getImageDescriptor(IMAGE_HELP_CO));
			}
			@Override
			public String getToolTipText() {
				return "Help";
			}
			@Override
			public void run() {

			};
		};
		
		mgr.add(helpAction);
		PlatformUI
				.getWorkbench()
				.getHelpSystem()
				.setHelp(helpAction,
						"edu.usc.cssl.tacit.crawlers.senate.ui.senate");
		PlatformUI
				.getWorkbench()
				.getHelpSystem()
				.setHelp(form,
						"edu.usc.cssl.tacit.crawlers.senate.ui.senate");
		form.getToolBarManager().update(true);
	}
}