| /******************************************************************************* |
| * Copyright (c) 2000, 2004 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.update.internal.ui.wizards; |
| |
| import org.eclipse.core.runtime.*; |
| import org.eclipse.jface.viewers.*; |
| import org.eclipse.update.core.*; |
| import org.eclipse.update.operations.*; |
| |
| public class FeatureSorter extends ViewerSorter { |
| |
| public static final int FEATURE_VERSION = 1; |
| public static final int FEATURE_LABEL = 2; |
| public static final int FEATURE_PROVIDER = 3; |
| |
| public static final int ASCENDING = 1; |
| public static final int DESCENDING = -1; |
| |
| private int key = FEATURE_LABEL; |
| private int labelOrder; |
| private int versionOrder; |
| private int providerOrder; |
| |
| public FeatureSorter() { |
| this(FEATURE_LABEL, ASCENDING, ASCENDING, ASCENDING); |
| } |
| |
| public FeatureSorter(int key, int labelOrder, int versionOrder, int providerOrder) { |
| this.key = key; |
| this.labelOrder = labelOrder; |
| this.versionOrder = versionOrder; |
| this.providerOrder = providerOrder; |
| } |
| |
| public int compare(Viewer viewer, Object e1, Object e2) { |
| if (!(e1 instanceof IInstallFeatureOperation) |
| || !(e2 instanceof IInstallFeatureOperation)) |
| return super.compare(viewer, e1, e2); |
| |
| IFeature f1 = ((IInstallFeatureOperation)e1).getFeature(); |
| IFeature f2 = ((IInstallFeatureOperation)e2).getFeature(); |
| |
| PluginVersionIdentifier v1 = f1.getVersionedIdentifier().getVersion(); |
| PluginVersionIdentifier v2 = f2.getVersionedIdentifier().getVersion(); |
| |
| String label1 = f1.getLabel() == null ? "" : f1.getLabel(); //$NON-NLS-1$ |
| String label2 = f2.getLabel() == null ? "" : f2.getLabel(); //$NON-NLS-1$ |
| |
| String provider1 = f1.getProvider() == null ? "" : f1.getProvider(); //$NON-NLS-1$ |
| String provider2 = f2.getProvider() == null ? "" : f2.getProvider(); //$NON-NLS-1$ |
| |
| int result = 0; |
| if (key == FEATURE_VERSION) { |
| result = compareVersions(v1, v2) * versionOrder; |
| if (result == 0) { |
| result = collator.compare(label1, label2) * labelOrder; |
| if (result == 0) |
| result = collator.compare(provider1, provider2) * providerOrder; |
| } |
| } else if (key == FEATURE_LABEL) { |
| result = collator.compare(label1, label2) * labelOrder; |
| if (result == 0) { |
| result = compareVersions(v1, v2) * versionOrder; |
| if (result == 0) |
| result = collator.compare(provider1, provider2) * providerOrder; |
| } |
| } else if (key == FEATURE_PROVIDER) { |
| result = collator.compare(provider1, provider2) * providerOrder; |
| if (result == 0) { |
| result = collator.compare(label1, label2) * labelOrder; |
| if (result == 0) |
| result = compareVersions(v1, v2) * versionOrder; |
| } |
| } |
| return result; |
| } |
| |
| private int compareVersions(PluginVersionIdentifier v1, PluginVersionIdentifier v2) { |
| if (v1.equals(v2)) |
| return 0; |
| return v2.isGreaterThan(v1) ? -1 : 1; |
| } |
| |
| } |