package de.gps.log.db.ui.views;

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

import org.eclipse.e4.ui.di.Focus;
import org.eclipse.swt.SWT;
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;

public class LogView {

	public static String ID = "de.gps.log.db.ui.LogView";
	
	private final Composite parent;
	
	// e4 will inject the composite "parent" into the view
	@Inject
	public LogView(Composite parent) {
		// the following is standard SWT Stuff
		this.parent = parent;
	}

	@Focus
	void setFocus() {
		System.out.println("DBLogView -- setFocus");
	}

	// PostConstruct ensures that the dependency injection has been finished
	// when this method is called
	@PostConstruct
	public void buildUI() {
		System.out.println("DBLogView -- buildUI");
		Composite composite = new Composite(parent, SWT.NONE);
		GridLayout layout = new GridLayout();
		layout.horizontalSpacing = 0;
		layout.verticalSpacing = 0;
		layout.marginWidth = 0;
		layout.marginHeight = 0;
		composite.setLayout(layout);
		composite.setLayoutData(new GridData(GridData.FILL_BOTH));
		
		createViewer(composite);
		
	}

	@PreDestroy
	public void dispose() {
		// this is necessary
		System.out.println("DBLogView -- dispose");
	}

	private void createViewer(Composite parent) {
		Button button = new Button(parent, SWT.NONE);
		button.addSelectionListener(new SelectionListener(){

			@Override
			public void widgetSelected(SelectionEvent e) {
				System.out.println("Button pressed");
			}

			@Override
			public void widgetDefaultSelected(SelectionEvent e) {
				System.out.println("Button pressed");
			}
			
		});
	}
	
}

composite.setFocus();

	@Execute
	public void execute(EPartService partService) {
		MPart part = partService.findPart(LogView.ID);
		if (part == null) {
			part = partService.createPart(LogView.ID);
		}
		if (part != null) {
			part.setLabel("DBLogView");
			part.setTooltip("Tooltip");
			partService.showPart(part, PartState.ACTIVATE);
		}
	}