--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/jface/text/contentassist/IContentAssistant.d	Sat Aug 23 19:10:48 2008 +0200
@@ -0,0 +1,132 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2007 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.contentassist.IContentAssistant;
+
+import dwt.dwthelper.utils;
+
+import dwtx.jface.text.ITextViewer;
+
+
+/**
+ * An <code>IContentAssistant</code> provides support on interactive content completion.
+ * The content assistant is a {@link dwtx.jface.text.ITextViewer} add-on. Its
+ * purpose is to propose, display, and insert completions of the content
+ * of the text viewer's document at the viewer's cursor position. In addition
+ * to handle completions, a content assistant can also be requested to provide
+ * context information. Context information is shown in a tool tip like popup.
+ * As it is not always possible to determine the exact context at a given
+ * document offset, a content assistant displays the possible contexts and requests
+ * the user to choose the one whose information should be displayed.
+ * <p>
+ * A content assistant has a list of {@link dwtx.jface.text.contentassist.IContentAssistProcessor}
+ * objects each of which is registered for a  particular document content
+ * type. The content assistant uses the processors to react on the request
+ * of completing documents or presenting context information.
+ * </p>
+ * <p>
+ * In order to provide backward compatibility for clients of <code>IContentAssistant</code>, extension
+ * interfaces are used to provide a means of evolution. The following extension interfaces exist:
+ * <ul>
+ * <li>{@link dwtx.jface.text.contentassist.IContentAssistantExtension} since version 3.0 introducing
+ *      the following functions:
+ *          <ul>
+ *              <li>handle documents with multiple partitions</li>
+ *              <li>insertion of common completion prefixes</li>
+ *          </ul>
+ * </li>
+ * <li>{@link dwtx.jface.text.contentassist.IContentAssistantExtension2} since version 3.2 introducing
+ *      the following functions:
+ *          <ul>
+ *              <li>repeated invocation (cycling) mode</li>
+ *              <li>completion listeners</li>
+ *              <li>a local status line for the completion popup</li>
+ *              <li>control over the behavior when no proposals are available</li>
+ *          </ul>
+ * </li>
+ * <li>{@link dwtx.jface.text.contentassist.IContentAssistantExtension3} since version 3.2 introducing
+ *      the following function:
+ *          <ul>
+ *              <li>a key-sequence to listen for in repeated invocation mode</li>
+ *          </ul>
+ * </li>
+ * <li>{@link dwtx.jface.text.contentassist.IContentAssistantExtension4} since version 3.4 introducing
+ *      the following function:
+ *          <ul>
+ *              <li>allows to get a handler for the given command identifier</li>
+ *          </ul>
+ * </li>
+ * </ul>
+ * </p>
+ * <p>
+ * The interface can be implemented by clients. By default, clients use
+ * {@link dwtx.jface.text.contentassist.ContentAssistant} as the standard
+ * implementer of this interface.
+ * </p>
+ *
+ * @see dwtx.jface.text.ITextViewer
+ * @see dwtx.jface.text.contentassist.IContentAssistProcessor
+ */
+ public interface IContentAssistant {
+
+    //------ proposal popup orientation styles ------------
+    /** The context info list will overlay the list of completion proposals. */
+    public final static int PROPOSAL_OVERLAY= 10;
+    /** The completion proposal list will be removed before the context info list will be shown. */
+    public final static int PROPOSAL_REMOVE=  11;
+    /** The context info list will be presented without hiding or overlapping the completion proposal list. */
+    public final static int PROPOSAL_STACKED= 12;
+
+    //------ context info box orientation styles ----------
+    /** Context info will be shown above the location it has been requested for without hiding the location. */
+    public final static int CONTEXT_INFO_ABOVE= 20;
+    /** Context info will be shown below the location it has been requested for without hiding the location. */
+    public final static int CONTEXT_INFO_BELOW= 21;
+
+
+    /**
+     * Installs content assist support on the given text viewer.
+     *
+     * @param textViewer the text viewer on which content assist will work
+     */
+    void install(ITextViewer textViewer);
+
+    /**
+     * Uninstalls content assist support from the text viewer it has
+     * previously be installed on.
+     */
+    void uninstall();
+
+    /**
+     * Shows all possible completions of the content at the viewer's cursor position.
+     *
+     * @return an optional error message if no proposals can be computed
+     */
+    String showPossibleCompletions();
+
+    /**
+     * Shows context information for the content at the viewer's cursor position.
+     *
+     * @return an optional error message if no context information can be computed
+     */
+    String showContextInformation();
+
+    /**
+     * Returns the content assist processor to be used for the given content type.
+     *
+     * @param contentType the type of the content for which this
+     *        content assistant is to be requested
+     * @return an instance content assist processor or
+     *         <code>null</code> if none exists for the specified content type
+     */
+    IContentAssistProcessor getContentAssistProcessor(String contentType);
+}