X-Git-Url: http://secure.phpeclipse.com

diff --git a/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/text/TypingRun.java b/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/text/TypingRun.java
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+++ b/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/text/TypingRun.java
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+/*******************************************************************************
+ * Copyright (c) 2000, 2003 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package net.sourceforge.phpdt.internal.ui.text;
+
+/**
+ * Describes a run of similar typing changes.
+ * <p>
+ * XXX to be extended with further information, e.g. offset, length, and content
+ * of the run.
+ * </p>
+ * 
+ * @since 3.0
+ */
+public final class TypingRun {
+	/**
+	 * A change of type <code>DELETE</code> deletes one single character
+	 * (through delete or backspace or empty paste).
+	 */
+	public static final ChangeType DELETE = new ChangeType(true, "DELETE"); //$NON-NLS-1$
+
+	/**
+	 * A change of type <code>INSERT</code> inserts one single character
+	 * (normal typing).
+	 */
+	public static final ChangeType INSERT = new ChangeType(true, "INSERT"); //$NON-NLS-1$
+
+	/**
+	 * A change of type <code>NO_CHANGE</code> does not change anything.
+	 */
+	public static final ChangeType NO_CHANGE = new ChangeType(false,
+			"NO_CHANGE"); //$NON-NLS-1$
+
+	/**
+	 * A change of type <code>OVERTYPE</code> replaces one single character
+	 * (overwrite mode, pasting a single character).
+	 */
+	public static final ChangeType OVERTYPE = new ChangeType(true, "OVERTYPE"); //$NON-NLS-1$
+
+	/**
+	 * A change of type <code>SELECTION</code> does not change text, but
+	 * changes the focus, or selection. Such a change ends all typing runs.
+	 */
+	public static final ChangeType SELECTION = new ChangeType(false,
+			"SELECTION"); //$NON-NLS-1$
+
+	/**
+	 * A change of type <code>UNKNOWN</code> modifies text in an unspecified
+	 * way. An example is pasting more than one character, or deleting an entire
+	 * selection, or reverting a file. Such a change ends all typing runs and
+	 * cannot form a typing run with any other change, including a change of
+	 * type <code>UNKNOWN</code>.
+	 */
+	public static final ChangeType UNKNOWN = new ChangeType(true, "UNKNOWN"); //$NON-NLS-1$
+
+	/**
+	 * Enumeration of change types.
+	 * 
+	 * @since 3.0
+	 */
+	public static final class ChangeType {
+		private final boolean fIsModification;
+
+		private final String fName;
+
+		/** Private ctor for type safe enumeration. */
+		private ChangeType(boolean isRunPart, String name) {
+			fIsModification = isRunPart;
+			fName = name;
+		}
+
+		/**
+		 * Returns <code>true</code> if changes of this type modify text.
+		 * 
+		 * @return <code>true</code> if changes of this type modify text,
+		 *         <code>false</code> otherwise
+		 */
+		boolean isModification() {
+			return fIsModification;
+		}
+
+		/*
+		 * @see java.lang.Object#toString()
+		 */
+		public String toString() {
+			return fName;
+		}
+	}
+
+	/**
+	 * Creates a new run.
+	 * 
+	 * @param type
+	 *            the type of the run
+	 */
+	TypingRun(ChangeType type) {
+		this.type = type;
+	}
+
+	/** The change type of this run. */
+	public final ChangeType type;
+}
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