1 files changed, 78 insertions, 0 deletions
diff --git a/org.eclipse.mylyn.tasks.ui/src/org/eclipse/mylyn/internal/tasks/ui/ui/editors/TaskEditorUrlHyperlinkDetector.java b/org.eclipse.mylyn.tasks.ui/src/org/eclipse/mylyn/internal/tasks/ui/ui/editors/TaskEditorUrlHyperlinkDetector.java
new file mode 100644
index 000000000..d43414a3a
--- /dev/null
+++ b/org.eclipse.mylyn.tasks.ui/src/org/eclipse/mylyn/internal/tasks/ui/ui/editors/TaskEditorUrlHyperlinkDetector.java
@@ -0,0 +1,78 @@
+/*******************************************************************************
+ * Copyright (c) 2004 - 2006 Mylar committers and others.
+ * 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 org.eclipse.mylar.internal.tasks.ui.ui.editors;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.eclipse.jface.text.BadLocationException;
+import org.eclipse.jface.text.IDocument;
+import org.eclipse.jface.text.IRegion;
+import org.eclipse.jface.text.ITextViewer;
+import org.eclipse.jface.text.Region;
+import org.eclipse.jface.text.hyperlink.IHyperlink;
+import org.eclipse.jface.text.hyperlink.IHyperlinkDetector;
+import org.eclipse.jface.text.hyperlink.URLHyperlink;
+import org.eclipse.mylar.internal.tasks.ui.ui.TaskUiUtil;
+
+/**
+ * @author Rob Elves
+ */
+public class TaskEditorUrlHyperlinkDetector implements IHyperlinkDetector {
+
+	// URL BNF: http://www.foad.org/~abigail/Perl/url2.html
+	// Source: http://www.truerwords.net/articles/ut/urlactivation.html#expressions
+	// Original pattern: (^|[ \\t\\r\\n])((ftp|http|https|gopher|mailto|news|nntp|telnet|wais|file|prospero|aim|webcal):(([A-Za-z0-9$_.+!*(),;/?:@&~=-])|%[A-Fa-f0-9]{2}){2,}(#([a-zA-Z0-9][a-zA-Z0-9$_.+!*(),;/?:@&~=%-]*))?([A-Za-z0-9$_+!*();/?:~-]))
+	private static final Pattern urlPattern = Pattern.compile("((ftp|http|https|gopher|mailto|news|nntp|telnet|wais|file|prospero|aim|webcal):(([A-Za-z0-9$_.+!*,;/?:@&~=-])|%[A-Fa-f0-9]{2}){2,}(#([a-zA-Z0-9][a-zA-Z0-9$_.+!*,;/?:@&~=%-]*))?([A-Za-z0-9$_+!*;/?:~-]))", Pattern.CASE_INSENSITIVE);
+	
+	public IHyperlink[] detectHyperlinks(ITextViewer textViewer, IRegion region, boolean canShowMultipleHyperlinks) {
+
+		if (region == null || textViewer == null)
+			return null;
+
+		IDocument document = textViewer.getDocument();
+
+		int offset = region.getOffset();
+
+		if (document == null)
+			return null;
+
+		IRegion lineInfo;
+		String line;
+		try {
+			lineInfo = document.getLineInformationOfOffset(offset);
+			line = document.get(lineInfo.getOffset(), lineInfo.getLength());
+		} catch (BadLocationException ex) {
+			return null;
+		}
+
+		Matcher m = urlPattern.matcher(line);
+
+		if (m.find()) {
+			IRegion urlRegion = new Region(lineInfo.getOffset() + m.start(), m.end() - m.start());
+			return new IHyperlink[] { new TaskEditorUrlHyperlink(urlRegion, m.group()) };
+		}
+
+		return null;
+	}
+
+	class TaskEditorUrlHyperlink extends URLHyperlink {
+
+		public TaskEditorUrlHyperlink(IRegion region, String urlString) {
+			super(region, urlString);
+		}
+
+		public void open() {
+			// TODO: if url is to a repository task, open task instead of url
+			TaskUiUtil.openUrl(getURLString());
+		}
+
+	}
+
+}