--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/jface/text/information/IInformationProvider.d	Sat Aug 23 19:10:48 2008 +0200
@@ -0,0 +1,71 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2008 IBM Corporation 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
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ * Port to the D programming language:
+ *     Frank Benoit <benoit@tionex.de>
+ *******************************************************************************/
+module dwtx.jface.text.information.IInformationProvider;
+
+import dwt.dwthelper.utils;
+
+import dwtx.jface.text.IRegion;
+import dwtx.jface.text.ITextViewer;
+
+
+/**
+ * Provides information related to the content of a text viewer.
+ * <p>
+ * In order to provide backward compatibility for clients of <code>IInformationProvider</code>, extension
+ * interfaces are used to provide a means of evolution. The following extension interfaces exist:
+ * <ul>
+ * <li>{@link IInformationProviderExtension} since version 2.1 introducing
+ *      the ability to provide the element for a given subject</li>
+ * <li>{@link IInformationProviderExtension2} since version 3.0 introducing
+ *      the ability to provide its own information control creator</li>
+ * </ul>
+ * </p>
+ * <p>
+ * Clients may implement this interface.
+ * </p>
+ *
+ * @see dwtx.jface.text.information.IInformationProviderExtension
+ * @see dwtx.jface.text.information.IInformationProviderExtension2
+ * @see dwtx.jface.text.information.IInformationPresenter
+ * @see dwtx.jface.text.ITextViewer
+ * @since 2.0
+ */
+public interface IInformationProvider {
+
+    /**
+     * Returns the region of the text viewer's document close to the given
+     * offset that contains a subject about which information can be provided.<p>
+     * For example, if information can be provided on a per code block basis,
+     * the offset should be used to find the enclosing code block and the source
+     * range of the block should be returned.
+     *
+     * @param textViewer the text viewer in which information has been requested
+     * @param offset the offset at which information has been requested
+     * @return the region of the text viewer's document containing the information subject
+     */
+    IRegion getSubject(ITextViewer textViewer, int offset);
+
+    /**
+     * Returns the information about the given subject or <code>null</code> if
+     * no information is available. It depends on the concrete configuration in which
+     * format the information is to be provided. For example, information presented
+     * in an information control displaying HTML, should be provided in HTML.
+     *
+     * @param textViewer the viewer in whose document the subject is contained
+     * @param subject the text region constituting the information subject
+     * @return the information about the subject
+     * @see IInformationPresenter
+     * @deprecated As of 2.1, replaced by {@link IInformationProviderExtension#getInformation2(ITextViewer, IRegion)}
+     */
+    String getInformation(ITextViewer textViewer, IRegion subject);
+}