Bug 528419 - [CodeMining] Provide extension point for CodeMiningI20171218-2000I20171217-2000I20171216-1500I20171215-2000

Change-Id: I1a7d51ae3772aefd382839d27814f88f7fa68efa
Signed-off-by: angelozerr <angelo.zerr@gmail.com>

2 files changed, 121 insertions, 0 deletions

diff --git a/org.eclipse.ui.genericeditor.examples/src/org/eclipse/ui/genericeditor/examples/dotproject/codemining/ProjectReferenceCodeMining.java b/org.eclipse.ui.genericeditor.examples/src/org/eclipse/ui/genericeditor/examples/dotproject/codemining/ProjectReferenceCodeMining.java
new file mode 100644
index 00000000000..e46bd352e5a
--- /dev/null
+++ b/org.eclipse.ui.genericeditor.examples/src/org/eclipse/ui/genericeditor/examples/dotproject/codemining/ProjectReferenceCodeMining.java
@@ -0,0 +1,46 @@
+/**

+ *  Copyright (c) 2017 Angelo ZERR.

+ *  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

+ *

+ *  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.concurrent.CompletableFuture;

+

+import org.eclipse.core.resources.IProject;

+import org.eclipse.core.resources.ResourcesPlugin;

+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.AbstractCodeMining;

+import org.eclipse.jface.text.codemining.ICodeMiningProvider;

+

+/**

+ * Project reference mining.

+ */

+public class ProjectReferenceCodeMining extends AbstractCodeMining {

+

+	private final String projectName;

+

+	public ProjectReferenceCodeMining(String projectName, int beforeLineNumber, IDocument document,

+			ICodeMiningProvider provider) throws BadLocationException {

+		super(beforeLineNumber, document, provider);

+		this.projectName = projectName;

+	}

+

+	@Override

+	protected CompletableFuture<Void> doResolve(ITextViewer viewer, IProgressMonitor monitor) {

+		return CompletableFuture.runAsync(() -> {

+			IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(projectName);

+			int refCount = project != null ? project.getReferencingProjects().length : 0;

+			super.setLabel(refCount + (refCount > 1 ? " references" : " reference"));

+		});

+	}

+

+}

diff --git a/org.eclipse.ui.genericeditor.examples/src/org/eclipse/ui/genericeditor/examples/dotproject/codemining/ProjectReferencesCodeMiningProvider.java b/org.eclipse.ui.genericeditor.examples/src/org/eclipse/ui/genericeditor/examples/dotproject/codemining/ProjectReferencesCodeMiningProvider.java
new file mode 100644
index 00000000000..a1312fe23c0
--- /dev/null
+++ b/org.eclipse.ui.genericeditor.examples/src/org/eclipse/ui/genericeditor/examples/dotproject/codemining/ProjectReferencesCodeMiningProvider.java
@@ -0,0 +1,75 @@
+/**

+ *  Copyright (c) 2017 Angelo ZERR.

+ *  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

+ *

+ *  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;

+		}

+	}

+}