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/*******************************************************************************
* Copyright (c) 2001, 2006 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.wst.xsd.ui.internal.common.commands;
import java.util.Map;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.Preferences;
import org.eclipse.emf.common.util.URI;
import org.eclipse.gef.commands.Command;
import org.eclipse.wst.sse.core.internal.encoding.CommonEncodingPreferenceNames;
import org.eclipse.wst.sse.core.internal.format.IStructuredFormatProcessor;
import org.eclipse.wst.xml.core.internal.XMLCorePlugin;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMModel;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode;
import org.eclipse.wst.xml.core.internal.provisional.format.FormatProcessorXML;
import org.eclipse.wst.xsd.ui.internal.editor.XSDEditorPlugin;
import org.eclipse.xsd.XSDConcreteComponent;
import org.eclipse.xsd.XSDSchema;
import org.eclipse.xsd.util.XSDConstants;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
public class BaseCommand extends Command
{
private static final String XML = "xml"; //$NON-NLS-1$
XSDConcreteComponent addedXSDConcreteComponent;
public BaseCommand()
{
super();
}
public BaseCommand(String label)
{
super(label);
}
public XSDConcreteComponent getAddedComponent()
{
return addedXSDConcreteComponent;
}
IDOMNode domNode;
protected void beginRecording(Object element) {
if (element instanceof IDOMNode)
{
domNode = (IDOMNode) element;
domNode.getModel().beginRecording(this, getUndoDescription());
}
}
protected void endRecording()
{
if (domNode != null)
domNode.getModel().endRecording(this);
}
protected String getUndoDescription() {
return getLabel();
}
protected void formatChild(Element child)
{
if (child instanceof IDOMNode)
{
IDOMModel model = ((IDOMNode)child).getModel();
try
{
// tell the model that we are about to make a big model change
model.aboutToChangeModel();
IStructuredFormatProcessor formatProcessor = new FormatProcessorXML();
formatProcessor.formatNode(child);
}
finally
{
// tell the model that we are done with the big model change
model.changedModel();
}
}
}
protected static void ensureSchemaElement(XSDSchema schema)
{
Document document = schema.getDocument();
Element schemaElement = document.getDocumentElement();
if (schemaElement == null)
{
String targetNamespace = getDefaultNamespace(schema);
schema.setTargetNamespace(targetNamespace);
Map qNamePrefixToNamespaceMap = schema.getQNamePrefixToNamespaceMap();
qNamePrefixToNamespaceMap.put("tns", targetNamespace);
if (XSDEditorPlugin.getDefault().isQualifyXMLSchemaLanguage())
{
String prefix = XSDEditorPlugin.getDefault().getXMLSchemaPrefix();
schema.setSchemaForSchemaQNamePrefix(prefix);
qNamePrefixToNamespaceMap.put(prefix, XSDConstants.SCHEMA_FOR_SCHEMA_URI_2001);
}
else
{
qNamePrefixToNamespaceMap.put(null, XSDConstants.SCHEMA_FOR_SCHEMA_URI_2001);
}
schema.updateElement();
ensureXMLDirective(document);
}
}
private static void ensureXMLDirective(Document document)
{
if (hasXMLDirective(document))
{
return;
}
Node firstChild = document.getFirstChild();
ProcessingInstruction xmlDeclaration = getXMLDeclaration(document);
document.insertBefore(xmlDeclaration, firstChild);
Text textNode = document.createTextNode(System.getProperty("line.separator"));
document.insertBefore(textNode, firstChild);
}
private static boolean hasXMLDirective(Document document)
{
Node firstChild = document.getFirstChild();
if (firstChild == null)
{
return false;
}
if (firstChild.getNodeType() != Node.PROCESSING_INSTRUCTION_NODE)
{
return false;
}
ProcessingInstruction processingInstruction = (ProcessingInstruction)firstChild;
if (!XML.equals(processingInstruction.getTarget()))
{
return false;
}
return true;
}
private static ProcessingInstruction getXMLDeclaration(Document document)
{
Preferences preference = XMLCorePlugin.getDefault().getPluginPreferences();
String charSet = preference.getString(CommonEncodingPreferenceNames.OUTPUT_CODESET);
if (charSet == null || charSet.trim().equals(""))
{
charSet = "UTF-8";
}
ProcessingInstruction xmlDeclaration = document.createProcessingInstruction(XML, "version=\"1.0\" encoding=\"" + charSet + "\"");
return xmlDeclaration;
}
private static String getDefaultNamespace(XSDSchema schema)
{
String namespace = XSDEditorPlugin.getDefault().getXMLSchemaTargetNamespace();
if (!namespace.endsWith("/"))
{
namespace = namespace.concat("/");
}
namespace += getFileName(schema) + "/";
return namespace;
}
private static String getFileName(XSDSchema schema)
{
URI schemaURI = schema.eResource().getURI();
IPath filePath = new Path(schemaURI.toString());
return filePath.removeFileExtension().lastSegment().toString();
}
}
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