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/*******************************************************************************
* Copyright (c) 2011, 2012 Wind River Systems, Inc. and others. 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tcf.te.tcf.filesystem.ui.internal.celleditor;
import java.util.List;
import org.eclipse.core.runtime.Assert;
import org.eclipse.jface.viewers.ICellEditorValidator;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.tcf.te.tcf.filesystem.core.model.FSTreeNode;
import org.eclipse.tcf.te.tcf.filesystem.ui.nls.Messages;
/**
* FSCellValidator is an <code>ICellEditorValidator</code> that validates the name input in the file system
* tree cell editor.
*/
public class FSCellValidator implements ICellEditorValidator {
// The regular expression to define the pattern of a valid Unix file name(not '/').
public static final String UNIX_FILENAME_REGEX = "[^/]+"; //$NON-NLS-1$
// The regular expression to define the pattern of a valid Windows file name.
// (not '?', '\', '/','*','<','>' and '|').
public static final String WIN_FILENAME_REGEX = "[^(\\?|\\\\|/|:|\\*|<|>|\\|)]+"; //$NON-NLS-1$
// The tree viewer used to display the file system.
private TreeViewer viewer;
/**
* Create an FSCellValidator for the specified file system tree.
*
* @param viewer The tree viewer for the file system.
*/
public FSCellValidator(TreeViewer viewer) {
this.viewer = viewer;
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.ICellEditorValidator#isValid(java.lang.Object)
*/
@Override
public String isValid(Object value) {
IStructuredSelection selection = (IStructuredSelection) viewer.getSelection();
Object element = selection.getFirstElement();
Assert.isTrue(element instanceof FSTreeNode);
FSTreeNode node = (FSTreeNode) element;
if (value == null) return Messages.FSRenamingAssistant_SpecifyNonEmptyName;
String text = value.toString().trim();
if (text.length() == 0) return Messages.FSRenamingAssistant_SpecifyNonEmptyName;
if (hasChild(node, text)) {
return Messages.FSRenamingAssistant_NameAlreadyExists;
}
String formatRegex = node.isWindowsNode() ? WIN_FILENAME_REGEX : UNIX_FILENAME_REGEX;
if (!text.matches(formatRegex)) {
return node.isWindowsNode() ? Messages.FSRenamingAssistant_WinIllegalCharacters : Messages.FSRenamingAssistant_UnixIllegalCharacters;
}
return null;
}
/**
* To test if the folder has a child with the specified name.
*
* @param folder The folder node.
* @param name The name.
* @return true if it has a child with the name.
*/
private boolean hasChild(FSTreeNode folder, String name) {
List<FSTreeNode> nodes = folder.getParent().getChildren();
for (FSTreeNode node : nodes) {
if (node.isWindowsNode()) {
if (node.name.equalsIgnoreCase(name)) return true;
}
else if (node.name.equals(name)) return true;
}
return false;
}
}
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