EditorUtility.java

/**
 * 
 */
package se.sics.kompics.ide.views;

import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.ITypeRoot;
import org.eclipse.jdt.ui.JavaUI;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.texteditor.ITextEditor;

import se.sics.kompics.ide.Activator;

/**
 * The <code>EditorUtility</code> .
 *
 * @author Lars Kroll <lkr@lars-kroll.com>
 * @version $Id: $
 *
 */
public class EditorUtility {
	
	private EditorUtility() {
		super();
	}
	
	public static IEditorPart getActiveEditor() {
		IWorkbenchWindow window= Activator.getDefault().getWorkbench().getActiveWorkbenchWindow();
		if (window != null) {
			IWorkbenchPage page= window.getActivePage();
			if (page != null) {
				return page.getActiveEditor();
			}
		}
		return null;
	}
	
	public static ITypeRoot getJavaInput(IEditorPart part) {
		IEditorInput editorInput= part.getEditorInput();
		if (editorInput != null) {
			IJavaElement input= JavaUI.getEditorInputJavaElement(editorInput);
			if (input instanceof ITypeRoot) {
				return (ITypeRoot) input;
			}
		}
		return null;	
	}

	public static void selectInEditor(ITextEditor editor, int offset, int length) {
		IEditorPart active = getActiveEditor();
		if (active != editor) {
			editor.getSite().getPage().activate(editor);
		}
		editor.selectAndReveal(offset, length);
	}
}