/*
* Copyright (c) 2011 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.ui.editor.model;
import static com.google.common.io.Closeables.closeQuietly;
import static com.google.eclipse.protobuf.ui.util.IStatusFactory.error;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.emf.common.util.URI;
import org.eclipse.ui.IEditorInput;
import org.eclipse.xtext.resource.XtextResource;
import org.eclipse.xtext.ui.editor.model.XtextDocument;
import com.google.eclipse.protobuf.ui.editor.UriEditorInput;
import com.google.eclipse.protobuf.ui.resource.XtextResourceFactory;
import com.google.inject.Inject;
/**
* @author alruiz@google.com (Alex Ruiz)
*/
class UriDocumentContentsFactory implements DocumentContentsFactory {
@Inject private ContentReader contentReader;
@Inject private XtextResourceFactory resourceFactory;
@Override public void createContents(XtextDocument document, Object element) throws CoreException {
UriEditorInput input = supportedEditorInputType().cast(element);
URI uri = input.getFileUri();
try {
String contents = contentsOf(uri);
document.set(contents);
XtextResource resource = resourceFactory.createResource(uri, contents);
document.setInput(resource);
} catch (Throwable t) {
throw new CoreException(error(t));
}
}
private String contentsOf(URI uri) throws IOException {
InputStream inputStream = null;
try {
URL url = new URL(uri.toString());
inputStream = url.openConnection().getInputStream();
return contentReader.contentsOf(inputStream);
} finally {
closeQuietly(inputStream);
}
}
@Override public boolean supportsEditorInputType(IEditorInput input) {
return supportedEditorInputType().isInstance(input);
}
private Class<UriEditorInput> supportedEditorInputType() {
return UriEditorInput.class;
}
}