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/*******************************************************************************
* Copyright (c) 2000, 2007 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.team.internal.ccvs.core;
import java.util.*;
import org.eclipse.core.resources.*;
import org.eclipse.core.resources.team.FileModificationValidationContext;
import org.eclipse.core.resources.team.FileModificationValidator;
import org.eclipse.core.runtime.*;
import org.eclipse.core.runtime.jobs.*;
import org.eclipse.osgi.util.NLS;
import org.eclipse.team.core.RepositoryProvider;
import org.eclipse.team.internal.ccvs.core.resources.CVSWorkspaceRoot;
/**
* Core validator that will load the UI validator only if a prompt is needed
*/
public class CVSCoreFileModificationValidator extends FileModificationValidator implements ICVSFileModificationValidator {
FileModificationValidator uiValidator;
@Override
public IStatus validateEdit(IFile[] files, FileModificationValidationContext context) {
IFile[] unmanagedReadOnlyFiles = getUnmanagedReadOnlyFiles(files);
if (unmanagedReadOnlyFiles.length > 0) {
IStatus status = setWritable(unmanagedReadOnlyFiles);
if (!status.isOK()) {
return status;
}
}
IFile[] readOnlyFiles = getManagedReadOnlyFiles(files);
if (readOnlyFiles.length == 0) return Status.OK_STATUS;
return edit(readOnlyFiles, context);
}
@Override
public IStatus validateSave(IFile file) {
if (!needsCheckout(file)) {
if (file.isReadOnly()) {
setWritable(new IFile[] { file } );
}
return Status.OK_STATUS;
}
return edit(new IFile[] {file}, (FileModificationValidationContext)null);
}
/**
* Method for editing a set of files. Is overriden by the
* UI to prompt the user. Default behavior is to try and load the
* UI validator and, failing that, to edit without
* prompting.
* @param readOnlyFiles
* @param context
* @return
*/
protected IStatus edit(IFile[] readOnlyFiles, FileModificationValidationContext context) {
FileModificationValidator override = getUIValidator();
if (override != null) {
return override.validateEdit(readOnlyFiles, context);
} else {
performEdit(readOnlyFiles);
return Status.OK_STATUS;
}
}
private FileModificationValidator getUIValidator() {
synchronized(this) {
if (uiValidator == null) {
uiValidator = getPluggedInValidator();
}
}
return uiValidator;
}
/**
* @see org.eclipse.team.internal.ccvs.core.ICVSFileModificationValidator#validateMoveDelete(org.eclipse.core.resources.IFile[], org.eclipse.core.runtime.IProgressMonitor)
*/
public IStatus validateMoveDelete(IFile[] files, IProgressMonitor monitor) {
IFile[] readOnlyFiles = getManagedReadOnlyFiles(files);
if (readOnlyFiles.length == 0) return Status.OK_STATUS;
performEdit(readOnlyFiles);
return Status.OK_STATUS;
}
/*
* Perform the headless edit check in the background.
* The user will be notified of any errors that occurred.
*/
protected void performEdit(final IFile[] readOnlyFiles) {
setWritable(readOnlyFiles);
Job job = new Job(CVSMessages.CVSCoreFileModificationValidator_editJob) {
protected IStatus run(IProgressMonitor monitor) {
try {
performEdit(readOnlyFiles, monitor);
} catch (CVSException e) {
return e.getStatus();
}
return Status.OK_STATUS;
}
};
scheduleEditJob(job);
}
protected void scheduleEditJob(Job job) {
job.schedule();
}
protected CVSTeamProvider getProvider(IFile[] files) {
CVSTeamProvider provider = (CVSTeamProvider)RepositoryProvider.getProvider(files[0].getProject(), CVSProviderPlugin.getTypeId());
return provider;
}
protected void performEdit(IFile[] files, IProgressMonitor monitor) throws CVSException {
getProvider(files).edit(files, false /* recurse */, true /* notify server */, true /* notify for writtable files */, ICVSFile.NO_NOTIFICATION, monitor);
}
private boolean needsCheckout(IFile file) {
try {
if (file.isReadOnly()) {
ICVSFile cvsFile = CVSWorkspaceRoot.getCVSFileFor(file);
boolean managed = cvsFile.isManaged();
return managed;
}
} catch (CVSException e) {
// Log the exception and assume we don't need a checkout
CVSProviderPlugin.log(e);
}
return false;
}
protected IStatus setWritable(final IFile[] files) {
for (int i = 0; i < files.length; i++) {
IFile file = files[i];
ResourceAttributes attributes = file.getResourceAttributes();
if (attributes != null) {
attributes.setReadOnly(false);
}
try {
file.setResourceAttributes(attributes);
} catch (CoreException e) {
return CVSException.wrapException(e).getStatus();
}
}
return Status.OK_STATUS;
}
private IFile[] getManagedReadOnlyFiles(IFile[] files) {
List readOnlys = new ArrayList();
for (int i = 0; i < files.length; i++) {
IFile iFile = files[i];
if (needsCheckout(iFile)) {
readOnlys.add(iFile);
}
}
return (IFile[]) readOnlys.toArray(new IFile[readOnlys.size()]);
}
protected IFile[] getUnmanagedReadOnlyFiles(IFile[] files) {
List readOnlys = new ArrayList();
for (int i = 0; i < files.length; i++) {
IFile iFile = files[i];
if (iFile.isReadOnly() && !needsCheckout(iFile)) {
readOnlys.add(iFile);
}
}
return (IFile[]) readOnlys.toArray(new IFile[readOnlys.size()]);
}
private static FileModificationValidator getPluggedInValidator() {
IExtension[] extensions = Platform.getExtensionRegistry().getExtensionPoint(CVSProviderPlugin.ID, CVSProviderPlugin.PT_FILE_MODIFICATION_VALIDATOR).getExtensions();
if (extensions.length == 0)
return null;
IExtension extension = extensions[0];
IConfigurationElement[] configs = extension.getConfigurationElements();
if (configs.length == 0) {
CVSProviderPlugin.log(IStatus.ERROR, NLS.bind("The CVS file modification validator is missing from extension {0}", (new Object[] {extension.getUniqueIdentifier()})), null);//$NON-NLS-1$
return null;
}
try {
IConfigurationElement config = configs[0];
return (FileModificationValidator) config.createExecutableExtension("run");//$NON-NLS-1$
} catch (CoreException ex) {
CVSProviderPlugin.log(IStatus.ERROR, NLS.bind("The CVS file modification validator registered as ID {0} could not be instantiated", (new Object[] {extension.getUniqueIdentifier()})), ex);//$NON-NLS-1$
return null;
}
}
public ISchedulingRule validateEditRule(CVSResourceRuleFactory factory, IResource[] resources) {
FileModificationValidator override = getUIValidator();
if (override instanceof CVSCoreFileModificationValidator && override != this) {
CVSCoreFileModificationValidator ui = (CVSCoreFileModificationValidator) override;
return ui.validateEditRule(factory, resources);
}
return internalValidateEditRule(factory, resources);
}
protected final ISchedulingRule internalValidateEditRule(CVSResourceRuleFactory factory, IResource[] resources) {
if (resources.length == 0)
return null;
//optimize rule for single file
if (resources.length == 1)
return isReadOnly(resources[0]) ? factory.getParent(resources[0]) : null;
//need a lock on the parents of all read-only files
HashSet rules = new HashSet();
for (int i = 0; i < resources.length; i++)
if (isReadOnly(resources[i]))
rules.add(factory.getParent(resources[i]));
return createSchedulingRule(rules);
}
protected ISchedulingRule createSchedulingRule(Set rules) {
if (rules.isEmpty())
return null;
if (rules.size() == 1)
return (ISchedulingRule) rules.iterator().next();
ISchedulingRule[] ruleArray = (ISchedulingRule[]) rules
.toArray(new ISchedulingRule[rules.size()]);
return new MultiRule(ruleArray);
}
protected final boolean isReadOnly(IResource resource) {
ResourceAttributes a = resource.getResourceAttributes();
if (a != null) {
return a.isReadOnly();
}
return false;
}
}
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