/**
* Copyright (c) 2008 Aptana, Inc.
*
* 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. If redistributing this code,
* this entire header must remain intact.
*
* This file is based on a JDT equivalent:
*******************************************************************************
* Copyright (c) 2000, 2006 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.rubypeople.rdt.internal.corext.buildpath;
import java.lang.reflect.InvocationTargetException;
import java.util.List;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.rubypeople.rdt.core.ILoadpathEntry;
import org.rubypeople.rdt.core.IRubyProject;
import org.rubypeople.rdt.core.RubyModelException;
import org.rubypeople.rdt.internal.ui.wizards.NewWizardMessages;
import org.rubypeople.rdt.internal.ui.wizards.buildpaths.newsourcepage.LoadpathModifierOperation;
/**
* Operation to reset all changes and go back to the initial project state.
*/
public class ResetAllOperation extends LoadpathModifierOperation {
private ILoadpathEntry[] fEntries;
/**
* Constructor
*
* @param listener a <code>ILoadpathModifierListener</code> that is notified about
* changes on classpath entries or <code>null</code> if no such notification is
* necessary.
* @param informationProvider a provider to offer information to the action
*
* @see ILoadpathInformationProvider
* @see LoadpathModifier
*/
public ResetAllOperation(ILoadpathModifierListener listener, ILoadpathInformationProvider informationProvider) {
super(listener, informationProvider, NewWizardMessages.NewSourceContainerWorkbookPage_ToolBar_Reset_tooltip, ILoadpathInformationProvider.RESET_ALL);
}
/**
* Method which runs the actions with a progress monitor.<br>
*
* This operation requires the following query from the provider:
* <li>IOutputFolderQuery</li>
*
* @param monitor a progress monitor, can be <code>null</code>
*/
public void run(IProgressMonitor monitor) throws InvocationTargetException {
fException= null;
try {
fInformationProvider.getRubyProject().setRawLoadpath(fEntries, null, monitor);
fInformationProvider.deleteCreatedResources();
fEntries= null;
} catch (CoreException e) {
fException= e;
}
super.handleResult(null, monitor);
}
/**
* Find out whether this operation can be executed on
* the provided list of elements.
*
* @param elements a list of elements
* @param types an array of types for each element, that is,
* the type at position 'i' belongs to the selected element
* at position 'i'
*
* @return <code>true</code> if the operation can be
* executed on the provided list of elements, <code>
* false</code> otherwise.
* @throws RubyModelException
*/
public boolean isValid(List elements, int[] types) throws RubyModelException {
IRubyProject project= fInformationProvider.getRubyProject();
if (project == null)
return false;
if (fEntries == null) {
fEntries= project.getRawLoadpath();
}
ILoadpathEntry[] currentEntries= project.getRawLoadpath();
if (currentEntries.length != fEntries.length)
return true;
for(int i= 0; i < fEntries.length; i++) {
if (!fEntries[i].equals(currentEntries[i]))
return true;
}
return false;
}
/**
* Get a description for this operation. In this particual case
* the description is independent of the selection and it's
* provided type.
*
* @param type the type of the selected object, must be a constant of
* <code>DialogPackageExplorerActionGroup</code>.
* @return a string describing the operation
*/
public String getDescription(int type) {
return NewWizardMessages.PackageExplorerActionGroup_FormText_Default_ResetAll;
}
}