r/org.eclipse.statet.r.ui/src/org/eclipse/statet/internal/r/ui/dataeditor/GotoCellHandler.java

/*=============================================================================#
 # Copyright (c) 2013, 2020 Stephan Wahlbrink and others.
 # 
 # This program and the accompanying materials are made available under the
 # terms of the Eclipse Public License 2.0 which is available at
 # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
 # which is available at https://www.apache.org/licenses/LICENSE-2.0.
 # 
 # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
 # 
 # Contributors:
 #     Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation
 #=============================================================================*/

package org.eclipse.statet.internal.r.ui.dataeditor;

import static org.eclipse.statet.ecommons.waltable.coordinate.Orientation.HORIZONTAL;
import static org.eclipse.statet.ecommons.waltable.coordinate.Orientation.VERTICAL;

import java.util.Map;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.jface.window.Window;
import org.eclipse.ui.commands.IElementUpdater;
import org.eclipse.ui.menus.UIElement;

import org.eclipse.statet.ecommons.ui.workbench.WorkbenchUIUtils;

import org.eclipse.statet.r.ui.dataeditor.RDataTableComposite;


public class GotoCellHandler extends AbstractHandler implements IElementUpdater {
	
	
	private final RDataTableComposite tableComposite;
	
	
	public GotoCellHandler(final RDataTableComposite table) {
		this.tableComposite= table;
	}
	
	
	@Override
	public void updateElement(final UIElement element, final Map parameters) {
		WorkbenchUIUtils.aboutToUpdateCommandsElements(this, element);
		try {
			element.setText("Go to line (cell)...");
		}
		finally {
			WorkbenchUIUtils.finalizeUpdateCommandsElements(this);
		}
	}
	
	@Override
	public Object execute(final ExecutionEvent event) throws ExecutionException {
		if (!this.tableComposite.isOK()) {
			return null;
		}
		
		final GotoCellDialog dialog= new GotoCellDialog(this.tableComposite);
		final long[] anchor= this.tableComposite.getAnchorDataIdxs();
		if (anchor != null) {
			if (anchor[0] >= 0) {
				dialog.set(HORIZONTAL, anchor[0]);
			}
			if (anchor[1] >= 0) {
				dialog.set(VERTICAL, anchor[1]);
			}
		}
		if (dialog.open() == Window.OK) {
			this.tableComposite.setAnchorDataIdxs(dialog.get(HORIZONTAL), dialog.get(VERTICAL));
		}
		return null;
	}
	
}