| /** |
| * <copyright> |
| * |
| * Copyright (c) 2015 itemis and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.html |
| * |
| * Contributors: |
| * itemis - Initial API and implementation |
| * |
| * </copyright> |
| */ |
| package org.eclipse.sphinx.emf.search.ui.providers; |
| |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.eclipse.jface.viewers.AbstractTreeViewer; |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| import org.eclipse.sphinx.emf.search.ui.ModelSearchResult; |
| import org.eclipse.sphinx.emf.search.ui.pages.ModelSearchResultViewPage; |
| |
| public class ModelSearchTreeContentProvider extends AbstractModelSearchContentProvider implements ITreeContentProvider { |
| |
| private Map<Object, Set<Object>> childrenMap; |
| |
| public ModelSearchTreeContentProvider(ModelSearchResultViewPage page) { |
| super(page); |
| } |
| |
| @Override |
| public Object[] getElements(Object inputElement) { |
| return getChildren(inputElement); |
| } |
| |
| @Override |
| public Object[] getChildren(Object parentElement) { |
| if (parentElement instanceof ModelSearchResult) { |
| return ((ModelSearchResult) parentElement).getElements(); |
| } |
| return EMPTY_ARR; |
| } |
| |
| @Override |
| public Object getParent(Object element) { |
| // TODO Auto-generated method stub |
| return null; |
| } |
| |
| @Override |
| public boolean hasChildren(Object element) { |
| return true; |
| } |
| |
| @Override |
| protected void initialize(ModelSearchResult result) { |
| super.initialize(result); |
| childrenMap = new HashMap<Object, Set<Object>>(); |
| if (result != null) { |
| Object[] elements = result.getElements(); |
| for (Object element : elements) { |
| if (getPage().getDisplayedMatchCount(element) > 0) { |
| insert(null, null, element); |
| } |
| } |
| } |
| } |
| |
| @Override |
| public void elementsChanged(Object[] updatedElements) { |
| if (getSearchResult() == null) { |
| return; |
| } |
| |
| AbstractTreeViewer viewer = (AbstractTreeViewer) getPage().getViewer(); |
| |
| Set<Object> toRemove = new HashSet<Object>(); |
| Set<Object> toUpdate = new HashSet<Object>(); |
| Map<Object, Set<Object>> toAdd = new HashMap<Object, Set<Object>>(); |
| for (Object updatedElement : updatedElements) { |
| if (getPage().getDisplayedMatchCount(updatedElement) > 0) { |
| // TODO (aakar) |
| insert(toAdd, toUpdate, updatedElement); |
| } else { |
| // remove(toRemove, toUpdate, updatedElement); |
| } |
| } |
| |
| viewer.remove(toRemove.toArray()); |
| for (Object parent : toAdd.keySet()) { |
| HashSet<Object> children = (HashSet<Object>) toAdd.get(parent); |
| viewer.add(parent, children.toArray()); |
| } |
| for (Object object : toUpdate) { |
| viewer.refresh(object); |
| } |
| // viewer.refresh(); |
| } |
| |
| protected void insert(Map<Object, Set<Object>> toAdd, Set<Object> toUpdate, Object child) { |
| Object parent = getParent(child); |
| while (parent != null) { |
| if (insertChild(parent, child)) { |
| if (toAdd != null) { |
| insertInto(parent, child, toAdd); |
| } |
| } else { |
| if (toUpdate != null) { |
| toUpdate.add(parent); |
| } |
| return; |
| } |
| child = parent; |
| parent = getParent(child); |
| } |
| if (insertChild(getSearchResult(), child)) { |
| if (toAdd != null) { |
| insertInto(getSearchResult(), child, toAdd); |
| } |
| } |
| } |
| |
| private boolean insertChild(Object parent, Object child) { |
| return insertInto(parent, child, childrenMap); |
| } |
| |
| private boolean insertInto(Object parent, Object child, Map<Object, Set<Object>> map) { |
| Set<Object> children = map.get(parent); |
| if (children == null) { |
| children = new HashSet<Object>(); |
| map.put(parent, children); |
| } |
| return children.add(child); |
| } |
| |
| @Override |
| public void clear() { |
| initialize(getSearchResult()); |
| getPage().getViewer().refresh(); |
| } |
| } |