/*
* Copyright (c) 2012 Google 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
*/
package com.google.eclipse.protobuf.cdt.actions;
import java.util.List;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.IPath;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.ui.IEditorPart;
import org.eclipse.xtext.resource.IResourceDescription;
import org.eclipse.xtext.ui.resource.IResourceSetProvider;
import com.google.eclipse.protobuf.cdt.mapping.CppToProtobufMapping;
import com.google.eclipse.protobuf.cdt.matching.ProtobufElementMatchFinder;
import com.google.eclipse.protobuf.cdt.util.Editors;
import com.google.eclipse.protobuf.resource.IndexLookup;
import com.google.inject.Inject;
/**
* @author alruiz@google.com (Alex Ruiz)
*/
class ProtobufElementUriFinder {
@Inject private Editors editors;
@Inject private IResourceSetProvider resourceSetProvider;
@Inject private ProtobufElementMatchFinder matcher;
@Inject private IndexLookup indexLookup;
@Inject private AstBasedCppToProtobufMapper mapper;
@Inject private ProtoFilePathFinder pathFinder;
URI findProtobufElementLocationFromSelectionOf(IEditorPart editor) {
IPath protoFilePath = pathFinder.findProtoFilePathIn(editor);
if (protoFilePath != null) {
CppToProtobufMapping mapping = mapper.createMappingFromSelectionOf(editor);
if (mapping != null) {
return protobufElementLocation(protoFilePath, editor, mapping);
}
}
return null;
}
private URI protobufElementLocation(IPath protoFilePath, IEditorPart editor, CppToProtobufMapping mapping) {
Resource resource = protoFileResource(protoFilePath, editor);
if (resource == null) {
return null;
}
List<URI> locations = matcher.matchingProtobufElementLocations(resource, mapping);
return (!locations.isEmpty()) ? locations.get(0) : null;
}
private Resource protoFileResource(IPath protoFilePath, IEditorPart editor) {
IFile cppHeaderFile = editors.fileDisplayedIn(editor);
ResourceSet resourceSet = resourceSetProvider.get(cppHeaderFile.getProject());
if (resourceSet != null) {
IResourceDescription description = indexLookup.resourceIn(protoFilePath);
return (description != null) ? resourceSet.getResource(description.getURI(), true) : null;
}
return null;
}
}