ToolItemRenderer.java

package at.bestsolution.e4.ui.workbench.renderers.jfx;

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.control.Button;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;

import org.eclipse.core.commands.ParameterizedCommand;
import org.eclipse.e4.core.commands.ECommandService;
import org.eclipse.e4.core.commands.EHandlerService;
import org.eclipse.e4.core.contexts.IEclipseContext;
import org.eclipse.e4.ui.model.application.commands.MParameter;
import org.eclipse.e4.ui.model.application.ui.MElementContainer;
import org.eclipse.e4.ui.model.application.ui.MUIElement;
import org.eclipse.e4.ui.model.application.ui.MUILabel;
import org.eclipse.e4.ui.model.application.ui.basic.MPart;
import org.eclipse.e4.ui.model.application.ui.menu.MHandledItem;
import org.eclipse.e4.ui.model.application.ui.menu.MItem;
import org.eclipse.e4.ui.model.application.ui.menu.MToolItem;
import org.eclipse.emf.common.util.URI;

@SuppressWarnings("restriction")
public class ToolItemRenderer extends JFXPartRenderer {

	private ParameterizedCommand generateParameterizedCommand(
			final MHandledItem item, final IEclipseContext lclContext) {
		ECommandService cmdService = (ECommandService) lclContext
				.get(ECommandService.class.getName());
		Map<String, Object> parameters = null;
		List<MParameter> modelParms = item.getParameters();
		if (modelParms != null && !modelParms.isEmpty()) {
			parameters = new HashMap<String, Object>();
			for (MParameter mParm : modelParms) {
				parameters.put(mParm.getName(), mParm.getValue());
			}
		}
		ParameterizedCommand cmd = cmdService.createCommand(item.getCommand()
				.getElementId(), parameters);
		item.setWbCommand(cmd);
		return cmd;
	}

	@Override
	public Object createWidget(MUIElement element) {
		Button button = new Button();
		button.getStyleClass().add("toolbarButton");
		
		MToolItem item = (MToolItem) element;
		String uri = item.getIconURI();
		if( uri != null ) {
			try {
				URL url = new URL(URI.createURI(uri).toString());
				ImageView icon = new ImageView(new Image(url.openStream()));
				button.setGraphic(icon);
			} catch (MalformedURLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		
		return button;
	}
	
	public void hookControllerLogic(MUIElement me) {
		if (me instanceof MHandledItem) {
			final MHandledItem item = (MHandledItem) me;
			final IEclipseContext lclContext = getContext(me);
			Button l = (Button) item.getWidget();
			l.setOnAction(new EventHandler<ActionEvent>() {
				
				@Override
				public void handle(ActionEvent arg0) {
					EHandlerService service = (EHandlerService) lclContext
							.get(EHandlerService.class.getName());
					ParameterizedCommand cmd = item.getWbCommand();
					if (cmd == null) {
						cmd = generateParameterizedCommand(item, lclContext);
					}
					if (cmd == null) {
						System.err.println(
								"Failed to execute: " + item.getCommand());
						return;
					}
					lclContext.set(MItem.class.getName(), item);
					service.executeHandler(cmd);
					lclContext.remove(MItem.class.getName());
				}
			});
		}
	}

	@Override
	protected Object getParentWidget(MUIElement element) {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public void disposeWidget(MUIElement part) {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void childRendered(MElementContainer<MUIElement> parentElement,
			MUIElement element) {
		// TODO Auto-generated method stub
		
	}

	@Override
	protected Object getImage(MUILabel element) {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	protected boolean requiresFocus(MPart element) {
		// TODO Auto-generated method stub
		return false;
	}
}