117 lines
3.3 KiB
Java
117 lines
3.3 KiB
Java
/*******************************************************************************
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* Copyright (c) 2015 MINRES Technologies GmbH and others.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*
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* Contributors:
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* MINRES Technologies GmbH - initial API and implementation
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*******************************************************************************/
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package com.minres.scviewer.e4.application.provider;
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import java.util.Collection;
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import java.util.List;
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import org.eclipse.jface.viewers.ITreeContentProvider;
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import org.eclipse.jface.viewers.Viewer;
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import com.google.common.base.Predicate;
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import com.google.common.collect.Collections2;
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import com.minres.scviewer.database.IHierNode;
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import com.minres.scviewer.database.IWaveform;
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import com.minres.scviewer.database.IWaveformDb;
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/**
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* The Class TxDbContentProvider providing the tree content of a database for the respective viewer.
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*/
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public class TxDbContentProvider implements ITreeContentProvider {
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/** The show nodes. */
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// private List<HierNode> nodes;
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private boolean showNodes;
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/**
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* Instantiates a new tx db content provider.
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*/
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public TxDbContentProvider() {
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super();
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this.showNodes = false;
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}
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/**
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* Instantiates a new tx db content provider.
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*
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* @param showNodes the show nodes
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*/
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public TxDbContentProvider(boolean showNodes) {
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super();
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this.showNodes = showNodes;
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}
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/* (non-Javadoc)
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* @see org.eclipse.jface.viewers.IContentProvider#dispose()
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*/
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@Override
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public void dispose() { }
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/* (non-Javadoc)
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* @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
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*/
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@Override
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public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
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// showNodes=!(newInput instanceof IHierNode);
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}
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/* (non-Javadoc)
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* @see org.eclipse.jface.viewers.ITreeContentProvider#getElements(java.lang.Object)
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*/
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@Override
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public Object[] getElements(Object inputElement) {
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if(inputElement instanceof IWaveformDb){
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return new Object[]{};
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}else if(inputElement instanceof IHierNode){
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Collection<IHierNode> res = Collections2.filter(((IHierNode)inputElement).getChildNodes(), new Predicate<IHierNode>(){
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@Override
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public boolean apply(IHierNode arg0) {
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if(showNodes){
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return arg0 instanceof IWaveform;
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} else{
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return arg0.getChildNodes().size()!=0;
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}
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}
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});
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return res.toArray();
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}else if(inputElement instanceof List<?>){
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return ((List<?>)inputElement).toArray();
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} else
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return null;
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}
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/* (non-Javadoc)
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* @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
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*/
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@Override
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public Object[] getChildren(Object parentElement) {
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return getElements(parentElement);
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}
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/* (non-Javadoc)
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* @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
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*/
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@Override
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public Object getParent(Object element) {
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return null;
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}
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/* (non-Javadoc)
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* @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
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*/
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@Override
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public boolean hasChildren(Object element) {
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Object[] obj = getElements(element);
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return obj == null ? false : obj.length > 0;
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}
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}
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