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/*****************************************************************************
* Copyright (c) 2010 CEA LIST.
*
* 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:
* Remi Schnekenburger (CEA LIST) remi.schnekenburger@cea.fr - Initial API and implementation
*****************************************************************************/
package org.eclipse.papyrus.properties.runtime.view.content;
import org.eclipse.papyrus.properties.runtime.Activator;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
/**
* Utility class to parse layouts. <BR>
* Nota: Entry point for future possible extension point</BR>
*/
public class LayoutParser {
/** kind for grid layout (default value) */
public static final String GRID_KIND = "Grid";
/**
* Parses the content of the layout node and returns the descriptor
*
* @param layoutNode
* the node to parse
* @return the created layout descriptor
*/
public static LayoutDescriptor parseLayoutNode(Node layoutNode) {
// default layout
if(layoutNode == null) {
return new GridLayoutDescriptor();
}
String type = getType(layoutNode);
if(GRID_KIND.equals(type)) {
NamedNodeMap attributes = layoutNode.getAttributes();
if(attributes == null) {
Activator.log.warn("Impossible to parse the attribute set for grid layout: " + layoutNode);
return new GridLayoutDescriptor();
}
int numColumns = 2;
Node numColumnsNode = attributes.getNamedItem("numColumns");
if(numColumnsNode != null) {
try {
numColumns = Integer.parseInt(numColumnsNode.getNodeValue());
} catch (NumberFormatException e) {
Activator.log.error(e);
}
}
boolean sameWidth = true;
Node sameWidthNode = attributes.getNamedItem("sameWidth");
if(sameWidthNode != null) {
sameWidth = Boolean.parseBoolean(sameWidthNode.getNodeValue());
}
return new GridLayoutDescriptor(numColumns, sameWidth);
}
return new GridLayoutDescriptor();
}
/**
* Returns the kind of layout
*
* @param layoutNode
* the node to parse
* @return the kind of layout
*/
private static String getType(Node layoutNode) {
NamedNodeMap attributes = layoutNode.getAttributes();
if(attributes == null) {
Activator.log.warn("Impossible to parse the attribute set for layout node: " + layoutNode);
return GRID_KIND;
}
Node kindNode = attributes.getNamedItem("kind");
if(kindNode == null) {
Activator.log.warn("Impossible to find the kind attribute for the layout node: " + layoutNode);
return GRID_KIND;
}
return kindNode.getNodeValue();
}
}
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