/*
* Copyright 2003-2012 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 jetbrains.mps.idea.core.usages.rules;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.usages.Usage;
import com.intellij.usages.UsageGroup;
import com.intellij.usages.impl.rules.FileGroupingRule;
import org.jetbrains.mps.openapi.model.SModel;
import jetbrains.mps.workbench.FileSystemModelHelper;
import org.jetbrains.annotations.NotNull;
import java.util.Collection;
public class ModelUsageGroupingRule extends FileGroupingRule {
private static final Logger LOG = Logger.getInstance(ModelUsageGroupingRule.class);
private Project project;
public ModelUsageGroupingRule(Project project) {
super(project);
this.project = project;
}
@Override
public UsageGroup groupUsage(@NotNull Usage usage) {
if (usage instanceof UsageInModel) {
final UsageInModel usageInModel = (UsageInModel) usage;
SModel modelDescriptor = usageInModel.getModel();
Collection<VirtualFile> filesByModelDescriptor = new FileSystemModelHelper(modelDescriptor).getVirtualFiles();
if (filesByModelDescriptor.isEmpty()) {
return null;
} else if (filesByModelDescriptor.size() > 1) {
// in case there are more than one file, result would be inaccurate, so better do not return anything
// it used to fail but I do not like that
// so adding an assert for a noble colleague who may encounter with this situation
LOG.warn("Multi-file model descriptor. Do not know what to do with it. Model " + modelDescriptor.getReference());
return null;
} else {
return new FileUsageGroup(project, filesByModelDescriptor.iterator().next()) {
public boolean canNavigate() {
return false;
}
};
}
}
return null;
}
}