/*
* JBoss, Home of Professional Open Source.
*
* See the LEGAL.txt file distributed with this work for information regarding copyright ownership and licensing.
*
* See the AUTHORS.txt file distributed with this work for a full listing of individual contributors.
*/
package org.teiid.designer.mapping.ui.recursion;
import java.util.List;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.graphics.Image;
import org.teiid.designer.metamodels.transformation.MappingClass;
import org.teiid.designer.metamodels.transformation.MappingClassColumn;
import org.teiid.designer.ui.viewsupport.ModelUtilities;
import org.teiid.query.ui.builder.util.ElementViewerFactory;
/**
* BuilderTreeProvider is the modeler's content and label provider for the Criteria and
* Expression builder dialogs in mapping.ui . Creating this object will cause it to be
* hooked up properly to the ElementViewerFactory.
*
* Dan's sugg: In rewriting the transformation.ui version to work for Choice Node/Mapping classes
* a good start is to expect that the args to these methods will be either
* MappingClass or MappingClassColumn objects.
* Also, expet to drop the 'GroupSymbol'
*
* @since 8.0
*/
public class BuilderTreeProvider implements ITreeContentProvider, ILabelProvider {
ILabelProvider emfLabelProvider;
MappingClass mcCurrent;
int iCounter = 0;
/**
* Construct an instance of BuilderTreeProvider.
*/
public BuilderTreeProvider() {
// System.out.println("[BuilderTreeProvider.ctor] TOP"); //$NON-NLS-1$
ElementViewerFactory.setContentProvider(this);
ElementViewerFactory.setLabelProvider(this);
emfLabelProvider = ModelUtilities.getEMFLabelProvider();
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
*/
@Override
public Object[] getChildren(Object parentElement) {
Object[] result = new Object[0];
if ( parentElement instanceof MappingClass ) {
// System.out.println("[BuilderTreeProvider.getChildren] About to return 'getColumns'"); //$NON-NLS-1$
result = ((MappingClass)parentElement).getColumns().toArray();
} else {
// System.out.println("[BuilderTreeProvider.getChildren] parentElement NOT a MappingClass, no action"); //$NON-NLS-1$
}
return result;
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
*/
@Override
public Object getParent( Object element ) {
Object oResult = null;
if ( element instanceof MappingClassColumn ) {
oResult = ((MappingClassColumn)element).getMappingClass();
}
else
if ( element instanceof EObject ) {
oResult = ((EObject)element).eContainer();
if ( oResult == null ) {
oResult = ModelUtilities.getModelResourceForModelObject((EObject) element);
}
}
// return result;
return oResult;
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
*/
@Override
public boolean hasChildren(Object element) {
// System.out.println("[BuilderTreeProvider.hasChildren] TOP: element is: " + element ); //$NON-NLS-1$
return getChildren(element).length > 0;
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ILabelProvider#getImage(java.lang.Object)
*/
@Override
public Image getImage(Object obj) {
return emfLabelProvider.getImage( obj );
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ILabelProvider#getText(java.lang.Object)
*/
@Override
public String getText(Object obj) {
// System.out.println("[BuilderTreeProvider.getText] TOP: Arg is: " + obj ); //$NON-NLS-1$
// System.out.println("[BuilderTreeProvider.getText] TOP: About to return: " + emfLabelProvider.getText( obj ) ); //$NON-NLS-1$
return emfLabelProvider.getText( obj );
//=============================================================
//// if ( obj instanceof IGroupSymbol ) {
//// IGroupSymbol symbol = (IGroupSymbol) obj;
////
//// String result = null;
//// // if symbol has a non-null definition, then it is an alias:
//// if ( symbol.getDefinition() == null ) {
//// result = symbol.getName();
//// } else {
//// result = symbol.getDefinition();
//// result += " AS " + symbol.getName(); //$NON-NLS-1$ "AS" is SQL, not English - do not internationalize
//// }
////
//// return result;
//// } else if ( obj instanceof ModelResource ) {
//// return ModelerCore.getModelEditor().getModelName((ModelResource) obj);
//// }
//// return emfLabelProvider.getText(obj);
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
*/
@Override
public Object[] getElements( Object inputElement ) {
// System.out.println("[BuilderTreeProvider.getElements] TOP"); //$NON-NLS-1$
Object[] result = new Object[] { mcCurrent };
// System.out.println("[BuilderTreeProvider.getElements] About to return" + result[0] ); //$NON-NLS-1$
iCounter++;
if ( iCounter > 100 ) {
Thread.dumpStack();
}
return result;
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IBaseLabelProvider#dispose()
*/
@Override
public void dispose() {
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
*/
@Override
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
// System.out.println("[BuilderTreeProvider.inputChanged] TOP"); //$NON-NLS-1$
if ( newInput != null && newInput instanceof List) {
mcCurrent = (MappingClass)((List)newInput).get(0);
}
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IBaseLabelProvider#addListener(org.eclipse.jface.viewers.ILabelProviderListener)
*/
@Override
public void addListener(ILabelProviderListener listener) {
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IBaseLabelProvider#isLabelProperty(java.lang.Object, java.lang.String)
*/
@Override
public boolean isLabelProperty(Object element, String property) {
return emfLabelProvider.isLabelProperty(element, property);
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IBaseLabelProvider#removeListener(org.eclipse.jface.viewers.ILabelProviderListener)
*/
@Override
public void removeListener(ILabelProviderListener listener) {
}
}