/*******************************************************************************
* 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.eclipse.swt.widgets.Shell;
import org.erlide.wrangler.refactoring.backend.IRefactoringRpcMessage;
import org.erlide.wrangler.refactoring.backend.RefactoringState;
import org.erlide.wrangler.refactoring.backend.internal.RefactoringRpcMessage;
import org.erlide.wrangler.refactoring.backend.internal.WranglerBackendManager;
import org.erlide.wrangler.refactoring.core.CostumWorkflowRefactoring;
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.util.GlobalParameters;
import com.ericsson.otp.erlang.OtpErlangObject;
import com.ericsson.otp.erlang.OtpErlangTuple;
/**
* Introduce ?LET expression refactoring integration
*
* @author Gyorgy Orosz
* @version %I%, %G%
*/
public class IntroduceLetRefactoring extends CostumWorkflowRefactoring {
OtpErlangObject expr, parentExpr;
@Override
public RefactoringStatus checkInitialConditions(final IProgressMonitor pm)
throws CoreException, OperationCanceledException {
// FIXME: what are the preconditions? add them!
return new RefactoringStatus();
}
@Override
public String getName() {
return "Introduce ?LET";
}
@Override
public IRefactoringRpcMessage run(final IErlSelection selection) {
final IErlMemberSelection sel = (IErlMemberSelection) selection;
return WranglerBackendManager.getRefactoringBackend().call("new_let_eclipse",
"sxxsxi", sel.getFilePath(), sel.getSelectionRange().getStartPos(),
sel.getSelectionRange().getEndPos(), userInput, sel.getSearchPath(),
GlobalParameters.getTabWidth());
}
@Override
public RefactoringWorkflowController getWorkflowController(final Shell shell) {
return new RefactoringWorkflowController(shell) {
@Override
public void doRefactoring() {
final IErlSelection sel = GlobalParameters.getWranglerSelection();
RefactoringRpcMessage message = (RefactoringRpcMessage) run(sel);
if (message.isSuccessful()) {
changedFiles = message.getRefactoringChangeset();
status = new RefactoringStatus();
} else if (message.getRefactoringState() == RefactoringState.QUESTION) {
if (ask("Question", message.getMessageString())) {
final OtpErlangTuple res = message.getResultObject();
expr = ((OtpErlangTuple) res.elementAt(2)).elementAt(0);
parentExpr = ((OtpErlangTuple) res.elementAt(2)).elementAt(1);
message = (RefactoringRpcMessage) runAlternative(sel);
if (message.isSuccessful()) {
status = new RefactoringStatus();
changedFiles = message.getRefactoringChangeset();
} else {
status = RefactoringStatus.createFatalErrorStatus(message
.getMessageString());
}
} else {
status = RefactoringStatus
.createFatalErrorStatus("Refactoring failed: the expression selected is not a QuickCheck generator.");
}
} else if (message.getRefactoringState() == RefactoringState.ERROR) {
status = RefactoringStatus.createFatalErrorStatus(message
.getMessageString());
}
}
};
}
@Override
public IRefactoringRpcMessage runAlternative(final IErlSelection selection) {
final IErlMemberSelection sel = (IErlMemberSelection) selection;
return WranglerBackendManager.getRefactoringBackend().call("new_let_1_eclipse",
"ssxxxi", sel.getFilePath(), userInput, expr, parentExpr,
sel.getSearchPath(), GlobalParameters.getTabWidth());
}
}