/*******************************************************************************
 * Copyright (c) 2010 György Orosz.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     György Orosz - initial API and implementation
 ******************************************************************************/
package org.erlide.wrangler.refactoring.core.internal;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.OperationCanceledException;
import org.eclipse.ltk.core.refactoring.RefactoringStatus;
import org.erlide.wrangler.refactoring.backend.IRefactoringRpcMessage;
import org.erlide.wrangler.refactoring.backend.internal.WranglerBackendManager;
import org.erlide.wrangler.refactoring.core.SimpleOneStepWranglerRefactoring;
import org.erlide.wrangler.refactoring.selection.IErlMemberSelection;
import org.erlide.wrangler.refactoring.selection.IErlSelection;
import org.erlide.wrangler.refactoring.selection.IErlSelection.SelectionKind;
import org.erlide.wrangler.refactoring.util.GlobalParameters;

import com.ericsson.otp.erlang.OtpErlangBoolean;

/**
 * Normalize record expression refactoring's integration
 *
 * @author Gyorgy Orosz
 * @version %I%, %G%
 */
public class NormalizeRecordExpression extends SimpleOneStepWranglerRefactoring {

    private final boolean showDefault;

    /**
     * @param showDefault
     *            indicates whether the refactoring should include default
     *            fields
     */
    public NormalizeRecordExpression(final boolean showDefault) {
        this.showDefault = showDefault;
    }

    @Override
    public RefactoringStatus checkInitialConditions(final IProgressMonitor pm)
            throws CoreException, OperationCanceledException {
        final IErlSelection sel = GlobalParameters.getWranglerSelection();
        if (sel instanceof IErlMemberSelection) {
            final SelectionKind kind = sel.getKind();
            if (kind == SelectionKind.FUNCTION_CLAUSE || kind == SelectionKind.FUNCTION) {
                return new RefactoringStatus();
            }
        }

        return RefactoringStatus
                .createFatalErrorStatus("Please select a record expression!");
    }

    @Override
    public String getName() {
        return "Normalize record expression";
    }

    @Override
    public IRefactoringRpcMessage run(final IErlSelection selection) {
        final IErlMemberSelection sel = (IErlMemberSelection) selection;
        return WranglerBackendManager.getRefactoringBackend().call(
                "normalise_record_expr_eclipse", "sxxxi", sel.getFilePath(),
                sel.getSelectionRange().getStartPos(), new OtpErlangBoolean(showDefault),
                sel.getSearchPath(), GlobalParameters.getTabWidth());

    }
}