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/*****************************************************************************
* Copyright (c) 2016 CEA LIST and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Mickael ADAM (ALL4TEC) mickael.adam@all4tec.net - Initial API and Implementation
*****************************************************************************/
package org.eclipse.papyrus.toolsmiths.palette.provider;
import java.util.Collection;
import org.eclipse.gef.palette.PaletteRoot;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.papyrus.infra.gmfdiag.common.service.palette.PaletteUtil;
/**
* Content provider for available tools viewer
*/
public class UMLToolsTreeContentProvider implements ITreeContentProvider {
/**
* Constructor
*
* @param viewer
* The viewer whose ContentProvider this content provider is
*/
public UMLToolsTreeContentProvider() {
}
/**
* {@inheritDoc}
*/
@Override
public void dispose() {
// Do nothing
}
/**
* {@inheritDoc}
*/
@Override
public Object[] getChildren(final Object parentElement) {
Object[] elements = null;
if (parentElement instanceof Collection<?>) {
elements = ((Collection<?>) parentElement).toArray();
} else if (parentElement instanceof PaletteRoot) {
// paletteUil.getAllEntries(...) to add drawers
// if so, uncomment the addFilterbutton for drawers in populate tool bar
elements = PaletteUtil.getAllToolEntries(((PaletteRoot) parentElement)).toArray();
}
return elements;
}
/**
* {@inheritDoc}
*/
@Override
public Object[] getElements(final Object inputElement) {
Object[] elements = null;
if (inputElement instanceof Collection<?>) {
elements = ((Collection<?>) inputElement).toArray();
} else if (inputElement instanceof PaletteRoot) {
// paletteUil.getAllEntries(...) to add drawers
// if so, uncomment the addFilterbutton for drawers in populate tool bar
elements = PaletteUtil.getAllToolEntries(((PaletteRoot) inputElement)).toArray();
}
if (elements == null) {
elements = new Object[0];
}
return elements;
}
/**
* {@inheritDoc}
*/
@Override
public Object getParent(final Object element) {
return null;
}
/**
* {@inheritDoc}
*/
@Override
public boolean hasChildren(final Object element) {
return null != getChildren(element) && 0 < getChildren(element).length;
}
/**
* {@inheritDoc}
*/
@Override
public void inputChanged(final Viewer viewer, final Object oldInput, final Object newInput) {
// Do nothing
}
}
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