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diff --git a/bundles/org.simantics.workbench/src/org/simantics/workbench/internal/DelayedEventsProcessor.java b/bundles/org.simantics.workbench/src/org/simantics/workbench/internal/DelayedEventsProcessor.java
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+++ b/bundles/org.simantics.workbench/src/org/simantics/workbench/internal/DelayedEventsProcessor.java
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+package org.simantics.workbench.internal;
+
+import java.util.ArrayList;
+
+import org.eclipse.core.filesystem.EFS;
+import org.eclipse.core.filesystem.IFileInfo;
+import org.eclipse.core.filesystem.IFileStore;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.Path;
+import org.eclipse.core.runtime.Status;
+import org.eclipse.jface.dialogs.MessageDialog;
+import org.eclipse.osgi.util.NLS;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Event;
+import org.eclipse.swt.widgets.Listener;
+import org.eclipse.swt.widgets.Shell;
+import org.eclipse.ui.IWorkbenchPage;
+import org.eclipse.ui.IWorkbenchWindow;
+import org.eclipse.ui.PartInitException;
+import org.eclipse.ui.PlatformUI;
+import org.eclipse.ui.ide.IDE;
+import org.eclipse.ui.internal.ide.IDEWorkbenchMessages;
+import org.eclipse.ui.internal.ide.IDEWorkbenchPlugin;
+
+/**
+ * Helper class used to process delayed events.
+ * Events currently supported:
+ * <ul>
+ * <li>SWT.OpenDocument</li>
+ * </ul>
+ * @since 3.3
+ */
+public class DelayedEventsProcessor implements Listener {
+
+	private ArrayList<String> filesToOpen = new ArrayList<String>(1);
+
+	/**
+	 * Constructor.
+	 * @param display display used as a source of event
+	 */
+	public DelayedEventsProcessor(Display display) {
+		display.addListener(SWT.OpenDocument, this);
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.swt.widgets.Listener#handleEvent(org.eclipse.swt.widgets.Event)
+	 */
+	public void handleEvent(Event event) {
+		final String path = event.text;
+		if (path == null)
+			return;
+		// If we start supporting events that can arrive on a non-UI thread, the following
+		// line will need to be in a "synchronized" block:
+		filesToOpen.add(path);
+	}
+	
+	/**
+	 * Process delayed events.
+	 * @param display display associated with the workbench 
+	 */
+	public void catchUp(Display display) {
+		if (filesToOpen.isEmpty())
+			return;
+		
+		// If we start supporting events that can arrive on a non-UI thread, the following
+		// lines will need to be in a "synchronized" block:
+		String[] filePaths = new String[filesToOpen.size()];
+		filesToOpen.toArray(filePaths);
+		filesToOpen.clear();
+
+		for(int i = 0; i < filePaths.length; i++) {
+			openFile(display, filePaths[i]);
+		}
+	}
+
+	private void openFile(Display display, final String path) {
+		display.asyncExec(new Runnable() {
+			public void run() {
+				IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
+				if (window == null)
+					return;
+				IFileStore fileStore = EFS.getLocalFileSystem().getStore(new Path(path));
+				IFileInfo fetchInfo = fileStore.fetchInfo();
+				if (!fetchInfo.isDirectory() && fetchInfo.exists()) {
+					IWorkbenchPage page = window.getActivePage();
+					if (page == null) {
+						String msg = NLS.bind(IDEWorkbenchMessages.OpenDelayedFileAction_message_noWindow, path);
+						MessageDialog.open(MessageDialog.ERROR, window.getShell(),
+								IDEWorkbenchMessages.OpenDelayedFileAction_title,
+								msg, SWT.SHEET);
+					}
+					try {
+						IDE.openInternalEditorOnFileStore(page, fileStore);
+						Shell shell = window.getShell();
+						if (shell != null) {
+							if (shell.getMinimized())
+								shell.setMinimized(false);
+							shell.forceActive();
+						}
+					} catch (PartInitException e) {
+						String msg = NLS.bind(IDEWorkbenchMessages.OpenDelayedFileAction_message_errorOnOpen,
+										fileStore.getName());
+						CoreException eLog = new PartInitException(e.getMessage());
+						IDEWorkbenchPlugin.log(msg, new Status(IStatus.ERROR, Activator.PLUGIN_ID, msg, eLog));
+						MessageDialog.open(MessageDialog.ERROR, window.getShell(),
+								IDEWorkbenchMessages.OpenDelayedFileAction_title,
+								msg, SWT.SHEET);
+					}
+				} else {
+					String msg = NLS.bind(IDEWorkbenchMessages.OpenDelayedFileAction_message_fileNotFound, path);
+					MessageDialog.open(MessageDialog.ERROR, window.getShell(),
+							IDEWorkbenchMessages.OpenDelayedFileAction_title,
+							msg, SWT.SHEET);
+				}
+			}
+		});
+	}
+
+}