Example handler for an alternative inline display

[vogella]

@HeikoKlare and @Wittmaxi while cleanup up my inbox I found this example code for showing something inline of the current editor. I wanted to share it with you so that you are aware of this option. No error check are included in the example code, it is just a demo which might help you for future developments.

Result:

package handler.handlers;

import java.util.List;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.e4.ui.model.application.MApplication;
import org.eclipse.e4.ui.model.application.ui.advanced.MArea;
import org.eclipse.e4.ui.model.application.ui.basic.MPartStack;
import org.eclipse.e4.ui.model.application.ui.basic.MWindow;
import org.eclipse.e4.ui.workbench.modeling.EModelService;
import org.eclipse.e4.ui.workbench.modeling.EPartService;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.handlers.HandlerUtil;

public class SampleHandler extends AbstractHandler {
	
	
	MPartStack pipStack = null;
	Composite pipComp = null;

	@Override
	public Object execute(ExecutionEvent event) throws ExecutionException {
		IWorkbenchWindow window = HandlerUtil
				.getActiveWorkbenchWindowChecked(event);
		MApplication theApp = (MApplication) window
				.getService(MApplication.class);
		MWindow win1 = theApp.getChildren().get(0);
		EPartService ps = win1.getContext().get(EPartService.class);
		EModelService ms = win1.getContext().get(EModelService.class);

		if (pipStack == null) {
			// Find the MArea
			List<MArea> areas = ms.findElements(win1, null, MArea.class, null);
			if (areas.size() > 0) {
				MArea area = areas.get(0);
				List<MPartStack> areaStacks = ms.findElements(area, null,
						MPartStack.class, null);
				if (areaStacks.size()==1) {
					pipStack =	ms.createModelElement(MPartStack.class);
					Composite areaComp = (Composite) area.getWidget();
					Rectangle ar = areaComp.getBounds();

					pipComp = new Composite(areaComp, SWT.BORDER);
					pipComp.setSize((ar.width / 2) - 20, (ar.height / 2) - 20);
					pipComp.setLocation((ar.width / 2) - 25, (ar.height / 2) - 25);
					pipComp.moveAbove(null);
					pipComp.setLayout(new FillLayout());

					pipStack.setVisible(true);
					Control stackCtrl = (Control) pipStack.getWidget();
					stackCtrl.setParent(pipComp);
					pipComp.layout(true);
				}
			}
		} else {
			pipStack.setVisible(true);
			pipComp.dispose();
			pipStack = null;
			pipComp = null;
		}
		return null;
	}
}

[vogella]

Closing as this is only intended for a FYI (and I did not find a better place to put it).

[HeikoKlare]

Thank you for the pointer, @vogella! That's really interesting.

[Wittmaxi]

Thank you @vogella :)
Nice to see that we are not the first ones to think of this! What a shame this was never used more widely