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/*
* Copyright 2000-2009 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.changes.ui;
import com.intellij.openapi.module.Module;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.roots.ProjectFileIndex;
import com.intellij.openapi.roots.ProjectRootManager;
import com.intellij.openapi.util.Comparing;
import com.intellij.openapi.util.registry.Registry;
import com.intellij.openapi.vfs.LocalFileSystem;
import com.intellij.openapi.vfs.VirtualFile;
import org.jetbrains.annotations.Nullable;
import javax.swing.tree.DefaultTreeModel;
import java.io.File;
import java.util.HashMap;
/**
* @author yole
*/
public class ChangesModuleGroupingPolicy implements ChangesGroupingPolicy {
private final Project myProject;
private final DefaultTreeModel myModel;
private final HashMap<Module, ChangesBrowserNode> myModuleCache = new HashMap<Module, ChangesBrowserNode>();
public static final String PROJECT_ROOT_TAG = "<Project Root>";
public ChangesModuleGroupingPolicy(final Project project, final DefaultTreeModel model) {
myProject = project;
myModel = model;
}
@Override
@Nullable
public ChangesBrowserNode getParentNodeFor(final StaticFilePath node, final ChangesBrowserNode rootNode) {
if (myProject.isDefault()) return null;
ProjectFileIndex index = ProjectRootManager.getInstance(myProject).getFileIndex();
VirtualFile vFile = node.getVf();
if (vFile == null) {
vFile = LocalFileSystem.getInstance().findFileByIoFile(new File(node.getPath()));
}
boolean hideExcludedFiles = Registry.is("ide.hide.excluded.files");
if (vFile != null && Comparing.equal(vFile, index.getContentRootForFile(vFile, hideExcludedFiles))) {
Module module = index.getModuleForFile(vFile, hideExcludedFiles);
return getNodeForModule(module, rootNode);
}
return null;
}
@Override
public void clear() {
myModuleCache.clear();
}
private ChangesBrowserNode getNodeForModule(Module module, ChangesBrowserNode root) {
ChangesBrowserNode node = myModuleCache.get(module);
if (node == null) {
if (module == null) {
node = ChangesBrowserNode.create(myProject, PROJECT_ROOT_TAG);
}
else {
node = new ChangesBrowserModuleNode(module);
}
myModel.insertNodeInto(node, root, root.getChildCount());
myModuleCache.put(module, node);
}
return node;
}
}
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