/*******************************************************************************
* Copyright (c) 2005, 2012 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.bpel.ui.dialogs;
import java.util.Map;
import org.eclipse.bpel.model.util.BPELUtils;
import org.eclipse.bpel.ui.BPELUIPlugin;
import org.eclipse.bpel.ui.Messages;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.StatusDialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
/**
* A simple dialog that helps the user choose the right namespace prefix
* for the given namespace.
*
*/
@SuppressWarnings("nls")
public class NamespaceMappingDialog extends StatusDialog {
protected static final String NS_PREFIX = "ns" ;
protected EObject modelObject;
protected Text fTargetNamespace;
protected Text fPrefixName;
protected Map<String,String> fNamespaceMappings;
private String fTargetNamespaceValue = ""; //$NON-NLS-1$
protected String fPrefixValue = ""; //$NON-NLS-1$
private NamespaceMappingDialog (Shell parent) {
super(parent);
int shellStyle = getShellStyle();
setShellStyle(shellStyle | SWT.RESIZE);
}
/**
* The modelObject is the model element that indicates the scope in which the
* variable should be visible.
* @param parent the parent shell
* @param eObject the model object
*/
public NamespaceMappingDialog (Shell parent, EObject eObject) {
this(parent);
setStatusLineAboveButtons(true);
this.modelObject = eObject;
setTitle(Messages.NamespaceMappingDialog_3);
computeNamespacePrefix();
}
/**
* Set the target namespace for which we want to establish the prefix for.
* @param namespace
*/
public void setNamespace ( String namespace ) {
fTargetNamespaceValue = namespace;
if (fTargetNamespace != null && fTargetNamespaceValue != null ) {
fTargetNamespace.setText( namespace );
}
}
/**
* Compute the next available namespace prefix.
*/
public void computeNamespacePrefix ( ) {
if (fNamespaceMappings == null) {
fNamespaceMappings = BPELUtils.getAllNamespacesForContext(modelObject);
}
String key = NS_PREFIX;
for(int i=1;; i++) {
key = NS_PREFIX + i;
if (fNamespaceMappings.containsKey(key) == false) {
break;
}
}
setPrefix ( key );
}
/**
* Set the prefix name.
* @param value
*/
public void setPrefix ( String value ) {
fPrefixValue = value;
if (fPrefixName != null && fPrefixValue != null) {
fPrefixName.setText(fPrefixValue);
validatePrefix();
}
}
/**
* Get the prefix value
*
* @return the prefix value
*/
public String getPrefix () {
return fPrefixValue;
}
/**
* @see Dialog#createDialogArea(Composite)
*/
@Override
public Control createDialogArea(Composite parent) {
Composite contents = (Composite) super.createDialogArea(parent);
createNamespaceArea (contents);
return contents;
}
protected void createNamespaceArea (Composite parent) {
Group group = new Group(parent,SWT.SHADOW_ETCHED_IN);
group.setText(Messages.NamespaceMappingDialog_4);
GridLayout layout = new GridLayout(1,true);
GridData data = new GridData();
data.grabExcessVerticalSpace = false;
data.grabExcessHorizontalSpace = true;
data.horizontalAlignment = GridData.FILL;
data.verticalAlignment = GridData.BEGINNING;
group.setLayout( layout );
group.setLayoutData( data );
Composite container = new Composite(group, SWT.NONE);
layout = new GridLayout();
layout.makeColumnsEqualWidth = true;
layout.numColumns = 2;
container.setLayout(layout);
data = new GridData();
data.grabExcessVerticalSpace = false;
data.grabExcessHorizontalSpace = true;
data.horizontalAlignment = GridData.FILL;
data.verticalAlignment = GridData.CENTER;
container.setLayoutData(data);
// Create Target namespace mappings
Composite namespace = new Composite(group, SWT.NONE);
layout = new GridLayout();
layout.numColumns = 2;
namespace.setLayout(layout);
data = new GridData();
data.grabExcessVerticalSpace = true;
data.grabExcessHorizontalSpace = true;
data.horizontalAlignment = GridData.FILL;
data.verticalAlignment = GridData.FILL;
namespace.setLayoutData(data);
Label label = new Label(namespace,SWT.NONE);
label.setText(Messages.NamespaceMappingDialog_5);
fTargetNamespace = new Text(namespace,SWT.BORDER);
fTargetNamespace.setEditable(false);
setNamespace( fTargetNamespaceValue );
data = new GridData();
data.grabExcessVerticalSpace = false;
data.grabExcessHorizontalSpace = true;
data.horizontalAlignment = GridData.FILL;
data.verticalAlignment = GridData.FILL;
fTargetNamespace.setLayoutData(data);
label = new Label(namespace,SWT.NONE);
label.setText(Messages.NamespaceMappingDialog_6);
fPrefixName = new Text(namespace,SWT.BORDER);
setPrefix( fPrefixValue );
fPrefixName.addModifyListener( new ModifyListener () {
public void modifyText(ModifyEvent e) {
validatePrefix();
}
});
data = new GridData();
data.grabExcessVerticalSpace = false;
data.grabExcessHorizontalSpace = true;
data.horizontalAlignment = GridData.FILL;
data.verticalAlignment = GridData.FILL;
fPrefixName.setLayoutData(data);
// End of target namespace variant.
}
void validatePrefix ( ) {
fPrefixValue = fPrefixName.getText();
if (fPrefixValue.length() == 0 || fPrefixValue.startsWith("xml") ) { //$NON-NLS-1$
// TODO: Prefix validation ?
updateStatus( new Status(IStatus.ERROR,
BPELUIPlugin.INSTANCE.getID(),
0,
Messages.NamespaceMappingDialog_8,
null));
return;
}
if (fNamespaceMappings.containsKey(fPrefixValue)) {
updateStatus( new Status(IStatus.ERROR,
BPELUIPlugin.INSTANCE.getID(),
0,
Messages.NamespaceMappingDialog_9,
null));
return ;
}
for(char ch : fPrefixValue.toCharArray()) {
if (Character.isWhitespace(ch)) {
updateStatus( new Status(IStatus.ERROR,
BPELUIPlugin.INSTANCE.getID(),
0,
Messages.NamespaceMappingDialog_8,
null));
return ;
}
}
updateStatus(Status.OK_STATUS);
}
@Override
protected void updateStatus (IStatus status) {
super.updateStatus(status);
}
}