/*******************************************************************************
* 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 java.util.ArrayList;
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.eclipse.swt.widgets.Shell;
import org.erlide.wrangler.refactoring.backend.IRefactoringRpcMessage;
import org.erlide.wrangler.refactoring.backend.internal.ExpressionPosRpcMessage;
import org.erlide.wrangler.refactoring.backend.internal.WranglerBackendManager;
import org.erlide.wrangler.refactoring.core.CostumWorkflowRefactoringWithPositionsSelection;
import org.erlide.wrangler.refactoring.core.RefactoringWorkflowController;
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 org.erlide.wrangler.refactoring.util.IErlRange;
import com.ericsson.otp.erlang.OtpErlangObject;
/**
* Fold expression against local function refactoring integrations
*
* @author Gyorgy Orosz
* @version %I%, %G%
*/
public class FoldLocalExpressionRefactoring extends
CostumWorkflowRefactoringWithPositionsSelection {
protected OtpErlangObject syntaxTree;
/**
* Preprocessing the file(s), and finding the candidates to fold.
*/
@Override
public RefactoringStatus checkInitialConditions(final IProgressMonitor pm)
throws CoreException, OperationCanceledException {
final IErlSelection selection = GlobalParameters.getWranglerSelection();
if (!(selection instanceof IErlMemberSelection && (selection.getKind() == SelectionKind.FUNCTION || selection
.getKind() == SelectionKind.FUNCTION_CLAUSE))) {
return RefactoringStatus
.createFatalErrorStatus("Please select an expression!");
}
final IErlMemberSelection sel = (IErlMemberSelection) selection;
ExpressionPosRpcMessage m = new ExpressionPosRpcMessage();
m = (ExpressionPosRpcMessage) WranglerBackendManager.getRefactoringBackend()
.callWithParser(m, "fold_expr_by_loc_eclipse", "siixi",
sel.getFilePath(), sel.getMemberRange().getStartLine(),
sel.getMemberRange().getStartCol(), sel.getSearchPath(),
GlobalParameters.getTabWidth());
if (m.isSuccessful()) {
syntaxTree = m.getSyntaxTree();
positions = m.getPositionDefinitions(sel.getDocument());
selectedPositions = new ArrayList<IErlRange>();
} else {
return RefactoringStatus.createFatalErrorStatus(m.getMessageString());
}
return new RefactoringStatus();
}
@Override
public String getName() {
return "Fold expression";
}
/**
* Fold the selected expression(s).
*/
@Override
public IRefactoringRpcMessage run(final IErlSelection selection) {
final IErlMemberSelection sel = (IErlMemberSelection) selection;
return WranglerBackendManager.getRefactoringBackend().call("fold_expr_1_eclipse",
"sxxxi", sel.getFilePath(), syntaxTree, getSelectedPos(),
sel.getSearchPath(), GlobalParameters.getTabWidth());
}
@Override
public RefactoringWorkflowController getWorkflowController(final Shell shell) {
return new RefactoringWorkflowController(shell) {
@Override
public void doRefactoring() {
}
};
}
@Override
public IRefactoringRpcMessage runAlternative(final IErlSelection selection) {
return null;
}
@Override
public RefactoringStatus checkFinalConditions(final IProgressMonitor pm)
throws CoreException, OperationCanceledException {
final IErlSelection sel = GlobalParameters.getWranglerSelection();
final IRefactoringRpcMessage message = run(sel);
if (message.isSuccessful()) {
changedFiles = message.getRefactoringChangeset();
return new RefactoringStatus();
}
return RefactoringStatus.createFatalErrorStatus(message.getMessageString());
}
}