/*******************************************************************************
* 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.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.selection.IErlSelection.SelectionKind;
import org.erlide.wrangler.refactoring.util.GlobalParameters;
/**
* Extract function refactoring integration class.
*
* @author Gyorgy Orosz
* @version %I%, %G%
*/
public class ExtractFunctionRefactoring extends CostumWorkflowRefactoring {
@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!");
}
return new RefactoringStatus();
}
@Override
public String getName() {
return "Extract function";
}
@Override
public IRefactoringRpcMessage run(final IErlSelection selection) {
final IErlMemberSelection sel = (IErlMemberSelection) selection;
return WranglerBackendManager.getRefactoringBackend().call(
"fun_extraction_eclipse", "sxxsi", sel.getFilePath(),
sel.getSelectionRange().getStartPos(),
sel.getSelectionRange().getEndPos(), userInput,
GlobalParameters.getTabWidth());
}
@Override
public RefactoringWorkflowController getWorkflowController(final Shell shell) {
return new RefactoringWorkflowController(shell) {
@Override
public void doRefactoring() {
final IErlSelection sel = GlobalParameters.getWranglerSelection();
IRefactoringRpcMessage message = run(sel);
if (message.isSuccessful()) {
changedFiles = message.getRefactoringChangeset();
status = new RefactoringStatus();
} else if (message.getRefactoringState() == RefactoringState.WARNING) {
final boolean answer = !ask("Warning", message.getMessageString());
if (answer) {
message = runAlternative(sel);
if (message.getRefactoringState() == RefactoringState.OK) {
status = new RefactoringStatus();
} else {
status = RefactoringStatus.createFatalErrorStatus(message
.getMessageString());
}
} else {
stop();
}
} else {
status = RefactoringStatus.createFatalErrorStatus(message
.getMessageString());
}
}
};
}
@Override
public IRefactoringRpcMessage runAlternative(final IErlSelection selection) {
final IErlMemberSelection sel = (IErlMemberSelection) selection;
return WranglerBackendManager.getRefactoringBackend().call(
"fun_extraction_eclipse", "sxxsi", sel.getFilePath(),
sel.getSelectionRange().getStartPos(),
sel.getSelectionRange().getEndPos(), userInput,
GlobalParameters.getTabWidth());
}
}