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/*******************************************************************************
* Copyright (c) 2000, 2011 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.debug.ui.actions;
import java.util.Iterator;
import java.util.List;
import org.eclipse.jdt.internal.debug.ui.launcher.IClasspathViewer;
import org.eclipse.jdt.launching.IRuntimeClasspathEntry;
import org.eclipse.jface.viewers.IStructuredSelection;
/**
* Moves selected entries in a runtime classpath viewer up one position.
*/
public class MoveUpAction extends RuntimeClasspathAction {
public MoveUpAction(IClasspathViewer viewer) {
super(ActionMessages.MoveUpAction_Move_U_p_1, viewer);
}
/* (non-Javadoc)
* Moves all selected entries up one position (if possible).
* @see org.eclipse.jface.action.Action#run()
*/
@Override
public void run() {
List<IRuntimeClasspathEntry> targets = getOrderedSelection();
if (targets.isEmpty()) {
return;
}
int top = 0;
int index = 0;
List<IRuntimeClasspathEntry> list = getEntriesAsList();
Iterator<IRuntimeClasspathEntry> entries = targets.iterator();
while (entries.hasNext()) {
IRuntimeClasspathEntry target = entries.next();
index = list.indexOf(target);
if (index > top) {
top = index - 1;
IRuntimeClasspathEntry temp = list.get(top);
list.set(top, target);
list.set(index, temp);
}
if (index == top){
top++;
} else {
top = index;
}
}
setEntries(list);
}
/* (non-Javadoc)
* @see org.eclipse.jdt.internal.debug.ui.actions.RuntimeClasspathAction#updateSelection(org.eclipse.jface.viewers.IStructuredSelection)
*/
@Override
protected boolean updateSelection(IStructuredSelection selection) {
if (selection.isEmpty()) {
return false;
}
return getViewer().updateSelection(getActionType(), selection);
}
/* (non-Javadoc)
* @see org.eclipse.jdt.internal.debug.ui.actions.RuntimeClasspathAction#getActionType()
*/
@Override
protected int getActionType() {
return MOVE;
}
}
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