ExpandCollapseAllHandler.java

package org.erlide.ui.editors.erl.handlers;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.handlers.HandlerUtil;
import org.erlide.ui.editors.erl.ErlangEditor;

public class ExpandCollapseAllHandler extends AbstractHandler {

    @Override
    public Object execute(final ExecutionEvent event) throws ExecutionException {
        final IEditorPart activeEditor = HandlerUtil.getActiveEditor(event);
        if (!(activeEditor instanceof ErlangEditor)) {
            return null;
        }
        final ErlangEditor editor = (ErlangEditor) activeEditor;
        final boolean collapse = event
                .getParameter("org.erlide.ui.commands.expandCollapseParameter")
                .equals("collapse");
        final boolean comments = event
                .getParameter("org.erlide.ui.commands.foldWhatParameter")
                .equals("comments");
        editor.expandCollapseFunctionsOrComments(collapse, comments);
        return null;
    }

}