/*******************************************************************************
 * 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.ProcessRpcMessage;
import org.erlide.wrangler.refactoring.backend.internal.WranglerBackendManager;
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;

/**
 * Rename process refactorings integration
 *
 * @author Gyorgy Orosz
 * @version %I%, %G%
 */
public class RenameProcessRefactoring extends ProcessRelatedRefactoring {

    @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 process!");
    }

    @Override
    public String getName() {
        return "Rename process";
    }

    @SuppressWarnings("boxing")
    @Override
    public IRefactoringRpcMessage run(final IErlSelection sel) {
        return WranglerBackendManager.getRefactoringBackend().call(
                "rename_process_1_eclipse", "sssxi", sel.getFilePath(), undecidables,
                userInput, sel.getSearchPath(), GlobalParameters.getTabWidth());
    }

    @SuppressWarnings("boxing")
    @Override
    protected ProcessRpcMessage checkUndecidables(final IErlMemberSelection sel) {
        return (ProcessRpcMessage) WranglerBackendManager.getRefactoringBackend()
                .callWithParser(new ProcessRpcMessage(), "rename_process_eclipse",
                        "siisxi", sel.getFilePath(),
                        sel.getSelectionRange().getStartLine(),
                        sel.getSelectionRange().getStartCol(), userInput,
                        sel.getSearchPath(), GlobalParameters.getTabWidth());
    }

    @Override
    protected String getUndecidableWarningMessage() {
        return "Wrangler could not decide whether the new process name provided\n"
                + "conflicts with the process name(s) used by other"
                + " registration expression(s).";
    }
}