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/*******************************************************************************
* Copyright (C) 2010, Dariusz Luksza <dariusz@luksza.org>
*
* All rights reserved. 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
*******************************************************************************/
package org.eclipse.egit.ui.internal.synchronize.model;
import static org.eclipse.compare.structuremergeviewer.Differencer.LEFT;
import static org.eclipse.compare.structuremergeviewer.Differencer.RIGHT;
/**
* This helper class contains methods that determinate that operation can be
* performed on given object
*/
public final class SupportedContextActionsHelper {
private SupportedContextActionsHelper() {
// non-instanceable helper class
}
/**
* @param object
* @return {@code true} if commit operation can be performed on
* {@code object}
*/
public static boolean canCommit(GitModelObject object) {
return object instanceof GitModelWorkingFile
|| object instanceof GitModelCacheFile
|| object instanceof GitModelCacheTree
|| object instanceof GitModelCache;
}
/**
* @param object
* @return {@code true} if the merge tool can be used on
* {@code object}
*/
public static boolean canUseMergeTool(GitModelObject object) {
return object instanceof GitModelWorkingFile
|| object instanceof GitModelCacheFile;
}
/**
* @param object
* @return {@code true} if stage/add operation can be performed on
* {@code object}
*/
public static boolean canStage(GitModelObject object) {
// stage action is not available on root node (object instanceof
// GitModelWorkingTree) because in some cases we cannot determinate with
// resource should be staged
return object instanceof GitModelWorkingFile
|| getRootObject(object) instanceof GitModelWorkingTree;
}
/**
* @param object
* @return {@code true} if 'assume unchanged' operation can be performed on
* {@code object}
*/
public static boolean canAssumeUnchanged(GitModelObject object) {
return canStage(object) || object instanceof GitModelCacheFile
|| object instanceof GitModelCacheTree;
}
/**
* @param object
* @return {@code true} if reset operation can be performed on
* {@code object}
*/
public static boolean canReset(GitModelObject object) {
return isOutGoingCommit(object) || canCommit(object);
}
/**
* @param object
* @return {@code true} when push operation can be performed on
* {@code object}
*/
public static boolean canPush(GitModelObject object) {
return isOutGoingCommit(object);
}
/**
* @param object
* @return {@code true} when merge operation can be performed on
* {@code object}
*/
public static boolean canMerge(GitModelObject object) {
return getRootObject(object) instanceof GitModelCommit;
}
private static GitModelObject getRootObject(GitModelObject object) {
GitModelObject root = object.getParent();
while (root != null && root instanceof GitModelTree)
root = root.getParent();
return root;
}
private static boolean isOutGoingCommit(GitModelObject object) {
int direction = LEFT;
if (getRootObject(object) instanceof GitModelCommit)
direction = ((GitModelCommit) object).getKind() & RIGHT;
return direction == RIGHT;
}
}
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