95 lines
2.9 KiB
Java
95 lines
2.9 KiB
Java
/*******************************************************************************
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* Copyright (c) 2015-2021 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.ArrayList;
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import java.util.Comparator;
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import java.util.List;
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import java.util.stream.Collectors;
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import org.eclipse.jface.viewers.ITreeContentProvider;
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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 boolean tableEntries;
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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.tableEntries = 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 tableEntries get nodes for waveform table entries
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*/
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public TxDbContentProvider(boolean tableEntries) {
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super();
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this.tableEntries = tableEntries;
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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 IHierNode){
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// make a copy as the laoder might continue to add waveforms
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ArrayList<IHierNode> nodes = new ArrayList<>(((IHierNode)inputElement).getChildNodes());
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return nodes.stream().filter(n ->
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tableEntries? n instanceof IWaveform : !n.getChildNodes().isEmpty()
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).sorted(Comparator.comparing(IHierNode::getName)).collect(Collectors.toList()).toArray();
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}else if(inputElement instanceof List<?>){
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return ((List<?>)inputElement).toArray();
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}else if(inputElement instanceof Object[]){
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return (Object[]) inputElement;
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} else
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return new Object[]{};
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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.length > 0;
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}
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}
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