1 files changed, 33 insertions, 0 deletions
diff --git a/org.eclipse.text/src/org/eclipse/jface/text/IPositionUpdater.java b/org.eclipse.text/src/org/eclipse/jface/text/IPositionUpdater.java
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+++ b/org.eclipse.text/src/org/eclipse/jface/text/IPositionUpdater.java
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+package org.eclipse.jface.text;
+
+/*
+ * (c) Copyright IBM Corp. 2000, 2001.
+ * All Rights Reserved.
+ */
+
+/**
+ * A position updater is responsible for adapting document positions.
+ * When installed on a document, the position updater updates the 
+ * document's positions to changes applied to this document. Document
+ * updaters can be selective, i.e. they might only update positions of 
+ * a certain category.<p>
+ * Position updaters are of primary importance for the definition of
+ * the semantics of positions.<p>
+ * Clients may implement this interface or use the standard implementation
+ * <code>DefaultPositionUpdater</code>.
+ *
+ * @see IDocument
+ * @see Position
+ */
+public interface IPositionUpdater {
+	
+	/**
+	 * Adapts positions to the change specified by the document event.
+	 * It is ensured that the document's partitioning has been adapted to
+	 * this document change and that all the position updaters which have 
+	 * a smaller index in the document's position updater list have been called.
+	 *
+	 * @param event the document event describing the document change
+	 */
+	void update(DocumentEvent event);
+}