/*
* Copyright 2000-2013 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.intellij.openapi.vcs.impl;
import com.intellij.ide.scratch.ScratchUtil;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.fileEditor.FileDocumentManager;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.vcs.*;
import com.intellij.openapi.vcs.changes.*;
import com.intellij.openapi.vcs.history.VcsRevisionNumber;
import com.intellij.openapi.vcs.readOnlyHandler.ReadonlyStatusHandlerImpl;
import com.intellij.openapi.vcs.rollback.RollbackEnvironment;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.util.ThreeState;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
/**
* @author yole
*/
public class VcsFileStatusProvider implements FileStatusProvider, VcsBaseContentProvider {
private final Project myProject;
private final FileStatusManagerImpl myFileStatusManager;
private final ProjectLevelVcsManager myVcsManager;
private final ChangeListManager myChangeListManager;
private final VcsDirtyScopeManager myDirtyScopeManager;
private final VcsConfiguration myConfiguration;
private final VcsBaseContentProvider[] myAdditionalProviders;
private boolean myHaveEmptyContentRevisions;
private static final Logger LOG = Logger.getInstance("#com.intellij.openapi.vcs.impl.VcsFileStatusProvider");
public VcsFileStatusProvider(final Project project,
final FileStatusManagerImpl fileStatusManager,
final ProjectLevelVcsManager vcsManager,
ChangeListManager changeListManager,
VcsDirtyScopeManager dirtyScopeManager, VcsConfiguration configuration) {
myProject = project;
myFileStatusManager = fileStatusManager;
myVcsManager = vcsManager;
myChangeListManager = changeListManager;
myDirtyScopeManager = dirtyScopeManager;
myConfiguration = configuration;
myHaveEmptyContentRevisions = true;
myFileStatusManager.setFileStatusProvider(this);
myAdditionalProviders = VcsBaseContentProvider.EP_NAME.getExtensions(project);
changeListManager.addChangeListListener(new ChangeListAdapter() {
@Override
public void changeListAdded(ChangeList list) {
fileStatusesChanged();
}
@Override
public void changeListRemoved(ChangeList list) {
fileStatusesChanged();
}
@Override
public void changeListChanged(ChangeList list) {
fileStatusesChanged();
}
@Override
public void changeListUpdateDone() {
if (myHaveEmptyContentRevisions) {
myHaveEmptyContentRevisions = false;
fileStatusesChanged();
}
}
@Override public void unchangedFileStatusChanged() {
fileStatusesChanged();
}
});
}
private void fileStatusesChanged() {
myFileStatusManager.fileStatusesChanged();
}
@Override
@NotNull
public FileStatus getFileStatus(@NotNull final VirtualFile virtualFile) {
final AbstractVcs vcs = myVcsManager.getVcsFor(virtualFile);
if (vcs == null) {
if (ScratchUtil.isScratch(virtualFile)) {
return FileStatus.SUPPRESSED;
}
return FileStatusManagerImpl.getDefaultStatus(virtualFile);
}
final FileStatus status = myChangeListManager.getStatus(virtualFile);
if (status == FileStatus.NOT_CHANGED && isDocumentModified(virtualFile)) {
return FileStatus.MODIFIED;
}
if (status == FileStatus.NOT_CHANGED) {
return FileStatusManagerImpl.getDefaultStatus(virtualFile);
}
return status;
}
private static boolean isDocumentModified(VirtualFile virtualFile) {
if (virtualFile.isDirectory()) return false;
return FileDocumentManager.getInstance().isFileModified(virtualFile);
}
@Override
public void refreshFileStatusFromDocument(@NotNull final VirtualFile virtualFile, @NotNull final Document doc) {
if (LOG.isDebugEnabled()) {
LOG.debug("refreshFileStatusFromDocument: file.getModificationStamp()=" + virtualFile.getModificationStamp() + ", document.getModificationStamp()=" + doc.getModificationStamp());
}
FileStatus cachedStatus = myFileStatusManager.getCachedStatus(virtualFile);
if (cachedStatus == null || cachedStatus == FileStatus.NOT_CHANGED || !isDocumentModified(virtualFile)) {
final AbstractVcs vcs = myVcsManager.getVcsFor(virtualFile);
if (vcs == null) return;
if (cachedStatus == FileStatus.MODIFIED && !isDocumentModified(virtualFile)) {
if (!((ReadonlyStatusHandlerImpl) ReadonlyStatusHandlerImpl.getInstance(myProject)).getState().SHOW_DIALOG) {
RollbackEnvironment rollbackEnvironment = vcs.getRollbackEnvironment();
if (rollbackEnvironment != null) {
rollbackEnvironment.rollbackIfUnchanged(virtualFile);
}
}
}
myFileStatusManager.fileStatusChanged(virtualFile);
ChangeProvider cp = vcs.getChangeProvider();
if (cp != null && cp.isModifiedDocumentTrackingRequired()) {
myDirtyScopeManager.fileDirty(virtualFile);
}
}
}
@NotNull
@Override
public ThreeState getNotChangedDirectoryParentingStatus(@NotNull VirtualFile virtualFile) {
return myConfiguration.SHOW_DIRTY_RECURSIVELY ? myChangeListManager.haveChangesUnder(virtualFile) : ThreeState.NO;
}
@Override
@Nullable
public BaseContent getBaseRevision(@NotNull final VirtualFile file) {
if (!isHandledByVcs(file)) {
VcsBaseContentProvider provider = findProviderFor(file);
return provider == null ? null : provider.getBaseRevision(file);
}
final Change change = ChangeListManager.getInstance(myProject).getChange(file);
if (change == null) return null;
final ContentRevision beforeRevision = change.getBeforeRevision();
if (beforeRevision == null) return null;
if (beforeRevision instanceof BinaryContentRevision) return null;
return new BaseContentImpl(beforeRevision);
}
@Nullable
private VcsBaseContentProvider findProviderFor(@NotNull VirtualFile file) {
for (VcsBaseContentProvider support : myAdditionalProviders) {
if (support.isSupported(file)) return support;
}
return null;
}
@Override
public boolean isSupported(@NotNull VirtualFile file) {
return isHandledByVcs(file) || findProviderFor(file) != null;
}
private boolean isHandledByVcs(@NotNull VirtualFile file) {
return file.isInLocalFileSystem() && myVcsManager.getVcsFor(file) != null;
}
private class BaseContentImpl implements BaseContent {
@NotNull private final ContentRevision myContentRevision;
public BaseContentImpl(@NotNull ContentRevision contentRevision) {
myContentRevision = contentRevision;
}
@NotNull
@Override
public VcsRevisionNumber getRevisionNumber() {
return myContentRevision.getRevisionNumber();
}
@Nullable
@Override
public String loadContent() {
String content;
try {
content = myContentRevision.getContent();
}
catch (VcsException ex) {
content = null;
}
if (content == null) {
myHaveEmptyContentRevisions = true;
return null;
}
return content;
}
}
}