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/**
* Copyright (c) 2017 Angelo ZERR.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Angelo Zerr <angelo.zerr@gmail.com> - [CodeMining] Provide extension point for CodeMining - Bug 528419
*/
package org.eclipse.ui.genericeditor.examples.dotproject.codemining;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CompletableFuture;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.codemining.AbstractCodeMiningProvider;
import org.eclipse.jface.text.codemining.ICodeMining;
/**
* Project reference minings provider.
*/
public class ProjectReferencesCodeMiningProvider extends AbstractCodeMiningProvider {
@Override
public CompletableFuture<List<? extends ICodeMining>> provideCodeMinings(ITextViewer viewer,
IProgressMonitor monitor) {
return CompletableFuture.supplyAsync(() -> {
IDocument document = viewer.getDocument();
List<ICodeMining> minings = new ArrayList<>();
int lineCount = document.getNumberOfLines();
for (int i = 0; i < lineCount; i++) {
// check if request was canceled.
monitor.isCanceled();
String line = getLineText(document, i).trim();
int startIndex = line.indexOf("<name>");
if (startIndex != -1) {
// It's the first name, we consider we are in <projectDescription></name>
startIndex += "<name>".length();
int endIndex = line.indexOf("</name>");
if (endIndex > startIndex) {
// Check if parent element is projectDescription
String projectName = line.substring(startIndex, endIndex);
if (projectName.length() > 0) {
try {
minings.add(new ProjectReferenceCodeMining(projectName, i, document, this));
} catch (BadLocationException e) {
e.printStackTrace();
}
}
}
// stop the compute of minings to avoid process other name like
// <buildCommand><name>
break;
}
}
return minings;
});
}
private static String getLineText(IDocument document, int line) {
try {
int lo = document.getLineOffset(line);
int ll = document.getLineLength(line);
return document.get(lo, ll);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
}
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