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/*******************************************************************************
* Copyright (c) 2006, 2015 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.ui.internal.cheatsheets.data;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.osgi.util.NLS;
import org.eclipse.ui.internal.cheatsheets.Messages;
import org.eclipse.ui.internal.cheatsheets.composite.parser.IStatusContainer;
import org.w3c.dom.Node;
/**
* This class checks for incompatible children of items and subitems
*/
public class IncompatibleSiblingChecker {
private IStatusContainer statusContainer;
private Node parentNode;
private String existingChild;
private boolean errorReported = false;
public IncompatibleSiblingChecker(IStatusContainer statusContainer, Node parentNode) {
this.statusContainer = statusContainer;
this.parentNode = parentNode;
}
/**
* Check to see that adding this new element does not create an error based on
* other elements. The rules are the only one action, command or perform-when can
* be declared per item or subitem and none of these can coexist with a subitem,
* conditional-subitem or repeated-subitem
* @param elementKind
*/
public void checkElement(String elementKind) {
if (isExecutable(elementKind)) {
if (existingChild == null) {
existingChild = elementKind;
} else {
reportIncompatible(elementKind);
}
} else if (isSubitem(elementKind)) {
if (isExecutable(existingChild)) {
reportIncompatible(elementKind);
}
}
}
private boolean isSubitem(String elementKind) {
return IParserTags.SUBITEM.equals(elementKind)
|| IParserTags.CONDITIONALSUBITEM.equals(elementKind)
|| IParserTags.REPEATEDSUBITM.equals(elementKind);
}
private boolean isExecutable(String elementKind) {
return IParserTags.ACTION.equals(elementKind)
|| IParserTags.COMMAND.equals(elementKind)
|| IParserTags.PERFORMWHEN.equals(elementKind);
}
private void reportIncompatible(String elementKind) {
if (errorReported) {
return; // One message is enough
}
errorReported = true;
String message;
if (elementKind.equals(existingChild)) {
message = NLS.bind(Messages.ERROR_PARSING_DUPLICATE_CHILD, (new Object[] {parentNode.getNodeName(), elementKind}));
} else {
message = NLS.bind(Messages.ERROR_PARSING_INCOMPATIBLE_CHILDREN, (new Object[] {parentNode.getNodeName(), existingChild, elementKind}));
}
statusContainer.addStatus(IStatus.ERROR, message, null);
}
}
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