| /******************************************************************************* |
| * Copyright (c) 2000, 2010 IBM Corporation and others. |
| * |
| * 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.equinox.internal.p2.ui.viewers; |
| |
| import org.eclipse.equinox.internal.p2.ui.ProvUI; |
| import org.eclipse.equinox.p2.metadata.IInstallableUnit; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.jface.viewers.ViewerComparator; |
| |
| public class IUComparator extends ViewerComparator { |
| public static final int IU_NAME = 0; |
| public static final int IU_ID = 1; |
| private int key; |
| private boolean showingId = false; |
| |
| public IUComparator(int sortKey) { |
| this.key = sortKey; |
| showingId = sortKey == IU_ID; |
| } |
| |
| /** |
| * Use the specified column config to determine whether the id should be used in |
| * lieu of an empty name when sorting. |
| * |
| * @param columnConfigs |
| */ |
| public void useColumnConfig(IUColumnConfig[] columnConfigs) { |
| for (IUColumnConfig columnConfig : columnConfigs) { |
| if (columnConfig.getColumnType() == IUColumnConfig.COLUMN_ID) { |
| showingId = true; |
| break; |
| } |
| } |
| } |
| |
| @Override |
| public int compare(Viewer viewer, Object obj1, Object obj2) { |
| IInstallableUnit iu1 = ProvUI.getAdapter(obj1, IInstallableUnit.class); |
| IInstallableUnit iu2 = ProvUI.getAdapter(obj2, IInstallableUnit.class); |
| if (iu1 == null || iu2 == null) |
| // If these are not iu's use the super class comparator. |
| return super.compare(viewer, obj1, obj2); |
| |
| String key1, key2; |
| if (key == IU_NAME) { |
| // Compare the iu names in the default locale. |
| // If a name is not defined, we use blank if we know the id is shown in another |
| // column. If the id is not shown elsewhere, then we are displaying it, so use |
| // the id instead. |
| key1 = iu1.getProperty(IInstallableUnit.PROP_NAME, null); |
| if (key1 == null) |
| if (showingId) |
| key1 = ""; //$NON-NLS-1$ |
| else |
| key1 = iu1.getId(); |
| key2 = iu2.getProperty(IInstallableUnit.PROP_NAME, null); |
| if (key2 == null) |
| if (showingId) |
| key2 = ""; //$NON-NLS-1$ |
| else |
| key2 = iu2.getId(); |
| } else { |
| key1 = iu1.getId(); |
| key2 = iu2.getId(); |
| } |
| |
| int result = 0; |
| result = key1.compareToIgnoreCase(key2); |
| if (result == 0) { |
| // We want to show later versions first so compare backwards. |
| result = iu2.getVersion().compareTo(iu1.getVersion()); |
| } |
| return result; |
| } |
| } |