org.eclipse.stem/modelgen/org.eclipse.stem.model.ui/src/org/eclipse/stem/model/ui/wizards/PackagePropertiesPage.java - stem/org.eclipse.stem - Git at Google

 /*******************************************************************************
  * Copyright (c) 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.stem.model.ui.wizards;
 import java.util.Collections;

 import org.eclipse.emf.ecore.util.EcoreUtil;
 import org.eclipse.jface.viewers.ArrayContentProvider;
 import org.eclipse.jface.viewers.ColumnLabelProvider;
 import org.eclipse.jface.viewers.DoubleClickEvent;
 import org.eclipse.jface.viewers.IDoubleClickListener;
 import org.eclipse.jface.viewers.ISelectionChangedListener;
 import org.eclipse.jface.viewers.SelectionChangedEvent;
 import org.eclipse.jface.viewers.StructuredSelection;
 import org.eclipse.jface.viewers.TableViewer;
 import org.eclipse.jface.viewers.TableViewerColumn;
 import org.eclipse.jface.window.Window;
 import org.eclipse.jface.wizard.WizardDialog;
 import org.eclipse.jface.wizard.WizardPage;
 import org.eclipse.stem.model.metamodel.MetamodelFactory;
 import org.eclipse.stem.model.metamodel.Model;
 import org.eclipse.stem.model.metamodel.Package;
 import org.eclipse.stem.model.ui.Constants;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.FocusEvent;
 import org.eclipse.swt.events.FocusListener;
 import org.eclipse.swt.events.KeyAdapter;
 import org.eclipse.swt.events.KeyEvent;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.TableColumn;
 import org.eclipse.swt.widgets.Text;


 public class PackagePropertiesPage extends WizardPage {
 	private Package modelPackage;

 	private Text pkgNameText, pkgPrefixText;
 	private TableViewer pkgModelsViewer;

 	private Button addModelButton, editModelButton, removeModelButton;

 	private boolean initialized = false;

 	protected PackagePropertiesPage(Package pkg) {
 		super("Model Package Options");
 		setTitle("Model Package Options");
 		setDescription("Configure the model package");

 		this.modelPackage = pkg;
 	}

 	public void setPackage(Package pkg)
 	{
 		this.modelPackage = pkg;
 		populate();
 		validatePage();
 	}

 	private void populate()
 	{
 		if (initialized && modelPackage != null) {
 			pkgNameText.setText(WizardHelper.safeGet(modelPackage.getName()));
 			pkgPrefixText.setText(WizardHelper.safeGet(modelPackage.getPackagePrefix()));
 			pkgModelsViewer.setInput(modelPackage.getModels());
 		}
 	}

 	@Override
 	public void createControl(Composite parent) {
 		Composite container = new Composite(parent, SWT.NONE);
 		container.setLayout(new GridLayout(2, false));

 		Label pkgNameLabel = new Label(container, SWT.NONE);
 		pkgNameLabel.setText("Package Name");

 		pkgNameText = new Text(container, SWT.BORDER | SWT.SINGLE);
 		pkgNameText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 		pkgNameText.setText(WizardHelper.safeGet(modelPackage.getName()));
 		pkgNameText.addKeyListener(new KeyAdapter() {

 			@Override
 			public void keyReleased(KeyEvent e) {
 				validatePage();
 			}

 		});

 		pkgNameText.addFocusListener(new FocusListener() {

 			@Override
 			public void focusLost(FocusEvent e) {
 				formatTextFields();
 			}

 			@Override
 			public void focusGained(FocusEvent e) { }
 		});

 		Label pkgPrefixLabel = new Label(container, SWT.NONE);
 		pkgPrefixLabel.setText("Package Prefix");

 		pkgPrefixText = new Text(container, SWT.BORDER | SWT.SINGLE);
 		pkgPrefixText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 		pkgPrefixText.setText(WizardHelper.safeGet(modelPackage
 				.getPackagePrefix()));
 		pkgPrefixText.addKeyListener(new KeyAdapter() {

 			@Override
 			public void keyReleased(KeyEvent e) {
 				validatePage();
 			}

 		});

 		pkgPrefixText.addFocusListener(new FocusListener() {

 			@Override
 			public void focusLost(FocusEvent e) {
 				formatTextFields();
 			}

 			@Override
 			public void focusGained(FocusEvent e) { }
 		});

 		createPackageModelsViewer(container);
 		setControl(container);
 		initialized = true;
 	}

 	private void createPackageModelsViewer(Composite container) {

 		Label pkgModelsLabel = new Label(container, SWT.NONE);
 		pkgModelsLabel.setText("Contained models");
 		GridData pkgModelsLabelData = new GridData();
 		pkgModelsLabelData.horizontalSpan = 2;
 		pkgModelsLabel.setLayoutData(pkgModelsLabelData);

 		pkgModelsViewer = new TableViewer(container, SWT.H_SCROLL
 				| SWT.V_SCROLL | SWT.FULL_SELECTION | SWT.BORDER);
 		pkgModelsViewer.setUseHashlookup(true);

 		GridData gridData = new GridData(GridData.FILL_BOTH);
 		gridData.horizontalSpan = 2;
 		pkgModelsViewer.getControl().setLayoutData(gridData);
 		pkgModelsViewer.setContentProvider(ArrayContentProvider.getInstance());

 		pkgModelsViewer.getTable().setHeaderVisible(true);
 		pkgModelsViewer.getTable().setLinesVisible(true);

 		pkgModelsViewer.addSelectionChangedListener(new ISelectionChangedListener() {
 			@Override
 			public void selectionChanged(SelectionChangedEvent event) {
 				boolean selected = (getSelectedModel() != null);
 				editModelButton.setEnabled(selected);
 				removeModelButton.setEnabled(selected);
 			}
 		});

 		pkgModelsViewer.addDoubleClickListener(new IDoubleClickListener() {

 			@Override
 			public void doubleClick(DoubleClickEvent event) {
 				editModel();
 			}
 		});

 		TableViewerColumn viewerColumn = null;
 		TableColumn column = null;

 		viewerColumn = new TableViewerColumn(pkgModelsViewer, SWT.NONE);
 		column = viewerColumn.getColumn();
 		column.setText("Name");
 		column.setWidth(200);
 		column.setResizable(true);
 		column.setMoveable(false);

 		viewerColumn.setLabelProvider(new ColumnLabelProvider() {
 			@Override
 			public String getText(Object element) {
 				if (element != null) {
 					return ((Model) element).getName();
 				}
 				return Constants.EMPTY_STRING;
 			}
 		});

 		viewerColumn = new TableViewerColumn(pkgModelsViewer, SWT.NONE);
 		column = viewerColumn.getColumn();
 		column.setText("Model Type");
 		column.setWidth(200);
 		column.setResizable(true);
 		column.setMoveable(false);

 		viewerColumn.setLabelProvider(new ColumnLabelProvider() {
 			@Override
 			public String getText(Object element) {
 				Model model = (Model)element;
 				if (model != null) {
 					return model.getModelType().getLiteral();
 				}
 				return Constants.EMPTY_STRING;
 			}
 		});


 		viewerColumn = new TableViewerColumn(pkgModelsViewer, SWT.NONE);
 		column = viewerColumn.getColumn();
 		column.setText("Parent Model");
 		column.setWidth(200);
 		column.setResizable(true);
 		column.setMoveable(false);

 		viewerColumn.setLabelProvider(new ColumnLabelProvider() {
 			@Override
 			public String getText(Object element) {
 				Model model = (Model)element;
 				if (model != null && model.getParentModel() != null) {
 					return model.getParentModel().getName();
 				}
 				return Constants.EMPTY_STRING;
 			}
 		});

 		Composite buttonBarComposite = new Composite(container, SWT.NONE);
 		GridData buttonBarGridData = new GridData(GridData.FILL_HORIZONTAL);
 		buttonBarGridData.horizontalSpan = 2;
 		buttonBarComposite.setLayoutData(buttonBarGridData);
 		buttonBarComposite.setLayout(new GridLayout(3, false));

 		addModelButton = new Button(buttonBarComposite, SWT.PUSH);
 		addModelButton.setEnabled(true);
 		addModelButton.setText("Add Model");
 		addModelButton.addSelectionListener(new SelectionAdapter() {

 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				addModel();
 			}

 		});

 		editModelButton = new Button(buttonBarComposite, SWT.PUSH);
 		editModelButton.setEnabled(false);
 		editModelButton.setText("Edit Model");
 		editModelButton.addSelectionListener(new SelectionAdapter() {

 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				editModel();
 			}

 		});

 		removeModelButton = new Button(buttonBarComposite, SWT.PUSH);
 		removeModelButton.setEnabled(false);
 		removeModelButton.setText("Remove Model");
 		removeModelButton.addSelectionListener(new SelectionAdapter() {

 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				removeModel();
 			}

 		});

 		pkgModelsViewer.setInput(modelPackage.getModels());

 	}

 	private Model openModelEditorDialog(final Model existingModel) {
 		Model modelToUse = null;
 		if (existingModel == null) {
 			modelToUse = MetamodelFactory.eINSTANCE.createModel();
 		} else {
 			modelToUse = EcoreUtil.copy(existingModel);
 		}

 		try {
 			NewModelWizard wizard = new NewModelWizard(modelToUse, modelPackage);
 			WizardDialog wizardDialog = new WizardDialog(getShell(), wizard);
 			if (wizardDialog.open() == Window.OK) {
 				return modelToUse;

 			}
 		} catch (Throwable t) {
 			t.printStackTrace();
 		}

 		return null;
 	}

 	private void addModel() {
 		try {
 			Model newModel = openModelEditorDialog(null);
 			if (newModel != null) {
 				modelPackage.getModels().add(newModel);
 				modelPackage.getCompartmentGroups().add(newModel.getCompartments());
 				pkgModelsViewer.refresh();
 			}
 			validatePage();
 		} catch (Throwable t) {
 			t.printStackTrace();
 		}
 	}

 	private void editModel() {
 		Model selectedModel = getSelectedModel();
 		if (selectedModel != null) {
 			Model newModel = openModelEditorDialog(selectedModel);
 			if (newModel != null) {
 				Collections.replaceAll(modelPackage.getModels(), selectedModel,
 						newModel);
 				Collections.replaceAll(modelPackage.getCompartmentGroups(), selectedModel.getCompartments(),
 						newModel.getCompartments());
 				pkgModelsViewer.refresh();
 			}
 		}
 		validatePage();
 	}

 	private void removeModel() {
 		Model selected = getSelectedModel();
 		if (selected != null) {
 			modelPackage.getModels().remove(selected);
 			modelPackage.getCompartmentGroups().remove(selected.getCompartments());
 			pkgModelsViewer.refresh();
 		}
 		validatePage();
 	}

 	private Model getSelectedModel() {
 		return (Model) ((StructuredSelection) pkgModelsViewer.getSelection())
 				.getFirstElement();
 	}

 	public void applyChanges() {
 		modelPackage.setName(WizardHelper.safeGet(pkgNameText));
 		modelPackage.setPackagePrefix(WizardHelper.safeGet(pkgPrefixText));
 	}

 	protected void validatePage() {
 		boolean valid = initialized && modelPackage != null;

 		String errorMessage = null;
 		if (valid && WizardHelper.isNullOrEmpty(pkgNameText.getText())) {
 			errorMessage = "Enter a name for the package";
 			valid = false;
 		}

 		if (valid && !WizardHelper.isValidJavaName(
 				WizardHelper.formatToUpperCaseWordsNoSpaces(pkgNameText.getText()))) {
 			errorMessage = "The package name \""+pkgNameText.getText()+"\" is invalid.  Please ensure it contains only alphanumeric characters and does not begin with a number.";
 			valid = false;
 		}

 		if (valid && WizardHelper.isNullOrEmpty(pkgPrefixText.getText())) {
 			errorMessage = "Enter a package prefix";
 			valid = false;
 		}

 		if (valid && !WizardHelper.isValidJavaPackageName(
 						WizardHelper.formatToJavaPackageName(pkgPrefixText.getText()))) {
 			errorMessage = "The package prefix \""+pkgPrefixText.getText()+"\" is invalid.  A valid example is \"org.eclipse.stem.models\".";
 			valid = false;
 		}

 		if (valid && modelPackage.getModels().size() == 0) {
 			errorMessage = "Please add one or more models to this package.";
 			valid = false;
 		}

 		String matchingName = WizardHelper.getFirstMatchingModelName(modelPackage);
 		if (valid && matchingName != null) {
 			errorMessage = "More than one model named \""+matchingName+"\" in this package";
 			valid = false;
 		}

 		setPageComplete(valid);
 		setErrorMessage(errorMessage);
 	}

 	private void formatTextFields()
 	{
 		pkgNameText.setText(WizardHelper.formatToUpperCaseWordsNoSpaces(pkgNameText.getText()));
 		pkgPrefixText.setText(WizardHelper.formatToJavaPackageName(pkgPrefixText.getText()));
 	}

 	@Override
 	public void setVisible(boolean visible) {
 		validatePage();
 		super.setVisible(visible);
 	}


 }
	/*******************************************************************************
	* Copyright (c) 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.stem.model.ui.wizards;
	import java.util.Collections;

	import org.eclipse.emf.ecore.util.EcoreUtil;
	import org.eclipse.jface.viewers.ArrayContentProvider;
	import org.eclipse.jface.viewers.ColumnLabelProvider;
	import org.eclipse.jface.viewers.DoubleClickEvent;
	import org.eclipse.jface.viewers.IDoubleClickListener;
	import org.eclipse.jface.viewers.ISelectionChangedListener;
	import org.eclipse.jface.viewers.SelectionChangedEvent;
	import org.eclipse.jface.viewers.StructuredSelection;
	import org.eclipse.jface.viewers.TableViewer;
	import org.eclipse.jface.viewers.TableViewerColumn;
	import org.eclipse.jface.window.Window;
	import org.eclipse.jface.wizard.WizardDialog;
	import org.eclipse.jface.wizard.WizardPage;
	import org.eclipse.stem.model.metamodel.MetamodelFactory;
	import org.eclipse.stem.model.metamodel.Model;
	import org.eclipse.stem.model.metamodel.Package;
	import org.eclipse.stem.model.ui.Constants;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.FocusEvent;
	import org.eclipse.swt.events.FocusListener;
	import org.eclipse.swt.events.KeyAdapter;
	import org.eclipse.swt.events.KeyEvent;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.TableColumn;
	import org.eclipse.swt.widgets.Text;


	public class PackagePropertiesPage extends WizardPage {
	private Package modelPackage;

	private Text pkgNameText, pkgPrefixText;
	private TableViewer pkgModelsViewer;

	private Button addModelButton, editModelButton, removeModelButton;

	private boolean initialized = false;

	protected PackagePropertiesPage(Package pkg) {
	super("Model Package Options");
	setTitle("Model Package Options");
	setDescription("Configure the model package");

	this.modelPackage = pkg;
	}

	public void setPackage(Package pkg)
	{
	this.modelPackage = pkg;
	populate();
	validatePage();
	}

	private void populate()
	{
	if (initialized && modelPackage != null) {
	pkgNameText.setText(WizardHelper.safeGet(modelPackage.getName()));
	pkgPrefixText.setText(WizardHelper.safeGet(modelPackage.getPackagePrefix()));
	pkgModelsViewer.setInput(modelPackage.getModels());
	}
	}

	@Override
	public void createControl(Composite parent) {
	Composite container = new Composite(parent, SWT.NONE);
	container.setLayout(new GridLayout(2, false));

	Label pkgNameLabel = new Label(container, SWT.NONE);
	pkgNameLabel.setText("Package Name");

	pkgNameText = new Text(container, SWT.BORDER \| SWT.SINGLE);
	pkgNameText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	pkgNameText.setText(WizardHelper.safeGet(modelPackage.getName()));
	pkgNameText.addKeyListener(new KeyAdapter() {

	@Override
	public void keyReleased(KeyEvent e) {
	validatePage();
	}

	});

	pkgNameText.addFocusListener(new FocusListener() {

	@Override
	public void focusLost(FocusEvent e) {
	formatTextFields();
	}

	@Override
	public void focusGained(FocusEvent e) { }
	});

	Label pkgPrefixLabel = new Label(container, SWT.NONE);
	pkgPrefixLabel.setText("Package Prefix");

	pkgPrefixText = new Text(container, SWT.BORDER \| SWT.SINGLE);
	pkgPrefixText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	pkgPrefixText.setText(WizardHelper.safeGet(modelPackage
	.getPackagePrefix()));
	pkgPrefixText.addKeyListener(new KeyAdapter() {

	@Override
	public void keyReleased(KeyEvent e) {
	validatePage();
	}

	});

	pkgPrefixText.addFocusListener(new FocusListener() {

	@Override
	public void focusLost(FocusEvent e) {
	formatTextFields();
	}

	@Override
	public void focusGained(FocusEvent e) { }
	});

	createPackageModelsViewer(container);
	setControl(container);
	initialized = true;
	}

	private void createPackageModelsViewer(Composite container) {

	Label pkgModelsLabel = new Label(container, SWT.NONE);
	pkgModelsLabel.setText("Contained models");
	GridData pkgModelsLabelData = new GridData();
	pkgModelsLabelData.horizontalSpan = 2;
	pkgModelsLabel.setLayoutData(pkgModelsLabelData);

	pkgModelsViewer = new TableViewer(container, SWT.H_SCROLL
	\| SWT.V_SCROLL \| SWT.FULL_SELECTION \| SWT.BORDER);
	pkgModelsViewer.setUseHashlookup(true);

	GridData gridData = new GridData(GridData.FILL_BOTH);
	gridData.horizontalSpan = 2;
	pkgModelsViewer.getControl().setLayoutData(gridData);
	pkgModelsViewer.setContentProvider(ArrayContentProvider.getInstance());

	pkgModelsViewer.getTable().setHeaderVisible(true);
	pkgModelsViewer.getTable().setLinesVisible(true);

	pkgModelsViewer.addSelectionChangedListener(new ISelectionChangedListener() {
	@Override
	public void selectionChanged(SelectionChangedEvent event) {
	boolean selected = (getSelectedModel() != null);
	editModelButton.setEnabled(selected);
	removeModelButton.setEnabled(selected);
	}
	});

	pkgModelsViewer.addDoubleClickListener(new IDoubleClickListener() {

	@Override
	public void doubleClick(DoubleClickEvent event) {
	editModel();
	}
	});

	TableViewerColumn viewerColumn = null;
	TableColumn column = null;

	viewerColumn = new TableViewerColumn(pkgModelsViewer, SWT.NONE);
	column = viewerColumn.getColumn();
	column.setText("Name");
	column.setWidth(200);
	column.setResizable(true);
	column.setMoveable(false);

	viewerColumn.setLabelProvider(new ColumnLabelProvider() {
	@Override
	public String getText(Object element) {
	if (element != null) {
	return ((Model) element).getName();
	}
	return Constants.EMPTY_STRING;
	}
	});

	viewerColumn = new TableViewerColumn(pkgModelsViewer, SWT.NONE);
	column = viewerColumn.getColumn();
	column.setText("Model Type");
	column.setWidth(200);
	column.setResizable(true);
	column.setMoveable(false);

	viewerColumn.setLabelProvider(new ColumnLabelProvider() {
	@Override
	public String getText(Object element) {
	Model model = (Model)element;
	if (model != null) {
	return model.getModelType().getLiteral();
	}
	return Constants.EMPTY_STRING;
	}
	});


	viewerColumn = new TableViewerColumn(pkgModelsViewer, SWT.NONE);
	column = viewerColumn.getColumn();
	column.setText("Parent Model");
	column.setWidth(200);
	column.setResizable(true);
	column.setMoveable(false);

	viewerColumn.setLabelProvider(new ColumnLabelProvider() {
	@Override
	public String getText(Object element) {
	Model model = (Model)element;
	if (model != null && model.getParentModel() != null) {
	return model.getParentModel().getName();
	}
	return Constants.EMPTY_STRING;
	}
	});

	Composite buttonBarComposite = new Composite(container, SWT.NONE);
	GridData buttonBarGridData = new GridData(GridData.FILL_HORIZONTAL);
	buttonBarGridData.horizontalSpan = 2;
	buttonBarComposite.setLayoutData(buttonBarGridData);
	buttonBarComposite.setLayout(new GridLayout(3, false));

	addModelButton = new Button(buttonBarComposite, SWT.PUSH);
	addModelButton.setEnabled(true);
	addModelButton.setText("Add Model");
	addModelButton.addSelectionListener(new SelectionAdapter() {

	@Override
	public void widgetSelected(SelectionEvent e) {
	addModel();
	}

	});

	editModelButton = new Button(buttonBarComposite, SWT.PUSH);
	editModelButton.setEnabled(false);
	editModelButton.setText("Edit Model");
	editModelButton.addSelectionListener(new SelectionAdapter() {

	@Override
	public void widgetSelected(SelectionEvent e) {
	editModel();
	}

	});

	removeModelButton = new Button(buttonBarComposite, SWT.PUSH);
	removeModelButton.setEnabled(false);
	removeModelButton.setText("Remove Model");
	removeModelButton.addSelectionListener(new SelectionAdapter() {

	@Override
	public void widgetSelected(SelectionEvent e) {
	removeModel();
	}

	});

	pkgModelsViewer.setInput(modelPackage.getModels());

	}

	private Model openModelEditorDialog(final Model existingModel) {
	Model modelToUse = null;
	if (existingModel == null) {
	modelToUse = MetamodelFactory.eINSTANCE.createModel();
	} else {
	modelToUse = EcoreUtil.copy(existingModel);
	}

	try {
	NewModelWizard wizard = new NewModelWizard(modelToUse, modelPackage);
	WizardDialog wizardDialog = new WizardDialog(getShell(), wizard);
	if (wizardDialog.open() == Window.OK) {
	return modelToUse;

	}
	} catch (Throwable t) {
	t.printStackTrace();
	}

	return null;
	}

	private void addModel() {
	try {
	Model newModel = openModelEditorDialog(null);
	if (newModel != null) {
	modelPackage.getModels().add(newModel);
	modelPackage.getCompartmentGroups().add(newModel.getCompartments());
	pkgModelsViewer.refresh();
	}
	validatePage();
	} catch (Throwable t) {
	t.printStackTrace();
	}
	}

	private void editModel() {
	Model selectedModel = getSelectedModel();
	if (selectedModel != null) {
	Model newModel = openModelEditorDialog(selectedModel);
	if (newModel != null) {
	Collections.replaceAll(modelPackage.getModels(), selectedModel,
	newModel);
	Collections.replaceAll(modelPackage.getCompartmentGroups(), selectedModel.getCompartments(),
	newModel.getCompartments());
	pkgModelsViewer.refresh();
	}
	}
	validatePage();
	}

	private void removeModel() {
	Model selected = getSelectedModel();
	if (selected != null) {
	modelPackage.getModels().remove(selected);
	modelPackage.getCompartmentGroups().remove(selected.getCompartments());
	pkgModelsViewer.refresh();
	}
	validatePage();
	}

	private Model getSelectedModel() {
	return (Model) ((StructuredSelection) pkgModelsViewer.getSelection())
	.getFirstElement();
	}

	public void applyChanges() {
	modelPackage.setName(WizardHelper.safeGet(pkgNameText));
	modelPackage.setPackagePrefix(WizardHelper.safeGet(pkgPrefixText));
	}

	protected void validatePage() {
	boolean valid = initialized && modelPackage != null;

	String errorMessage = null;
	if (valid && WizardHelper.isNullOrEmpty(pkgNameText.getText())) {
	errorMessage = "Enter a name for the package";
	valid = false;
	}

	if (valid && !WizardHelper.isValidJavaName(
	WizardHelper.formatToUpperCaseWordsNoSpaces(pkgNameText.getText()))) {
	errorMessage = "The package name \""+pkgNameText.getText()+"\" is invalid. Please ensure it contains only alphanumeric characters and does not begin with a number.";
	valid = false;
	}

	if (valid && WizardHelper.isNullOrEmpty(pkgPrefixText.getText())) {
	errorMessage = "Enter a package prefix";
	valid = false;
	}

	if (valid && !WizardHelper.isValidJavaPackageName(
	WizardHelper.formatToJavaPackageName(pkgPrefixText.getText()))) {
	errorMessage = "The package prefix \""+pkgPrefixText.getText()+"\" is invalid. A valid example is \"org.eclipse.stem.models\".";
	valid = false;
	}

	if (valid && modelPackage.getModels().size() == 0) {
	errorMessage = "Please add one or more models to this package.";
	valid = false;
	}

	String matchingName = WizardHelper.getFirstMatchingModelName(modelPackage);
	if (valid && matchingName != null) {
	errorMessage = "More than one model named \""+matchingName+"\" in this package";
	valid = false;
	}

	setPageComplete(valid);
	setErrorMessage(errorMessage);
	}

	private void formatTextFields()
	{
	pkgNameText.setText(WizardHelper.formatToUpperCaseWordsNoSpaces(pkgNameText.getText()));
	pkgPrefixText.setText(WizardHelper.formatToJavaPackageName(pkgPrefixText.getText()));
	}

	@Override
	public void setVisible(boolean visible) {
	validatePage();
	super.setVisible(visible);
	}



	}