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1 /*******************************************************************************
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2 * Copyright (c) 2006, 2007 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 *******************************************************************************/
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11 module org.eclipse.core.internal.databinding.observable.tree.IChildrenCountUpdate;
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81
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12 import org.eclipse.core.internal.databinding.observable.tree.TreePath;
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13 import org.eclipse.core.internal.databinding.observable.tree.IViewerUpdate;
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78
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14
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15 import java.lang.all;
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16
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17 /**
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18 * Request monitor used to collect the number of children for an element in a lazy
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19 * observable tree.
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20 *
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21 * @since 3.3
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22 */
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23 public interface IChildrenCountUpdate : IViewerUpdate {
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24
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25 /**
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26 * Returns the parent elements that children counts have been requested for
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27 * as tree paths. An empty path identifies the root element.
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28 *
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29 * @return parent elements as tree paths
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30 */
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31 public TreePath[] getParents();
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32
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33 /**
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34 * Sets the number of children for the given parent.
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35 *
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36 * @param parentPath
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37 * parent element or empty path for root element
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38 * @param numChildren
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39 * number of children
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40 */
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41 public void setChildCount(TreePath parentPath, int numChildren);
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42 }
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