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package org.eclipse.papyrus.example.diagram.simplediagram.part;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.util.FeatureMap;
import org.eclipse.emf.edit.provider.IWrapperItemProvider;
import org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvider;
import org.eclipse.emf.edit.ui.provider.AdapterFactoryLabelProvider;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
/**
* Wizard page that allows to select element from model.
* @generated
*/
public class ModelElementSelectionPage extends WizardPage {
/**
* @generated
*/
protected EObject selectedModelElement;
/**
* @generated
*/
private TreeViewer modelViewer;
/**
* @generated
*/
public ModelElementSelectionPage(String pageName) {
super(pageName);
}
/**
* @generated
*/
public EObject getModelElement() {
return selectedModelElement;
}
/**
* @generated
*/
public void setModelElement(EObject modelElement) {
selectedModelElement = modelElement;
if (modelViewer != null) {
if (selectedModelElement != null) {
modelViewer.setInput(selectedModelElement.eResource());
modelViewer.setSelection(new StructuredSelection(
selectedModelElement));
} else {
modelViewer.setInput(null);
}
setPageComplete(validatePage());
}
}
/**
* @generated
*/
public void createControl(Composite parent) {
initializeDialogUnits(parent);
Composite plate = new Composite(parent, SWT.NONE);
plate.setLayoutData(new GridData(GridData.FILL_BOTH));
GridLayout layout = new GridLayout();
layout.marginWidth = 0;
plate.setLayout(layout);
setControl(plate);
Label label = new Label(plate, SWT.NONE);
label.setText(getSelectionTitle());
label.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING));
modelViewer = new TreeViewer(plate, SWT.SINGLE | SWT.H_SCROLL
| SWT.V_SCROLL | SWT.BORDER);
GridData layoutData = new GridData(GridData.FILL_BOTH);
layoutData.heightHint = 300;
layoutData.widthHint = 300;
modelViewer.getTree().setLayoutData(layoutData);
modelViewer.setContentProvider(new AdapterFactoryContentProvider(
UMLDiagramEditorPlugin.getInstance()
.getItemProvidersAdapterFactory()));
modelViewer.setLabelProvider(new AdapterFactoryLabelProvider(
UMLDiagramEditorPlugin.getInstance()
.getItemProvidersAdapterFactory()));
if (selectedModelElement != null) {
modelViewer.setInput(selectedModelElement.eResource());
modelViewer.setSelection(new StructuredSelection(
selectedModelElement));
}
modelViewer
.addSelectionChangedListener(new ISelectionChangedListener() {
public void selectionChanged(SelectionChangedEvent event) {
ModelElementSelectionPage.this
.updateSelection((IStructuredSelection) event
.getSelection());
}
});
setPageComplete(validatePage());
}
/**
* Override to provide custom model element description.
* @generated
*/
protected String getSelectionTitle() {
return Messages.ModelElementSelectionPageMessage;
}
/**
* @generated
*/
protected void updateSelection(IStructuredSelection selection) {
selectedModelElement = null;
if (selection.size() == 1) {
Object selectedElement = selection.getFirstElement();
if (selectedElement instanceof IWrapperItemProvider) {
selectedElement = ((IWrapperItemProvider) selectedElement)
.getValue();
}
if (selectedElement instanceof FeatureMap.Entry) {
selectedElement = ((FeatureMap.Entry) selectedElement)
.getValue();
}
if (selectedElement instanceof EObject) {
selectedModelElement = (EObject) selectedElement;
}
}
setPageComplete(validatePage());
}
/**
* Override to provide specific validation of the selected model element.
* @generated
*/
protected boolean validatePage() {
return true;
}
}
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