components/visual-panels/core/src/java/util/com/oracle/solaris/vp/util/misc/event/IntervalEventQueue.java
changeset 3553 f1d133b09a8c
parent 3552 077ebe3d0d24
child 3554 ef58713bafc4
--- a/components/visual-panels/core/src/java/util/com/oracle/solaris/vp/util/misc/event/IntervalEventQueue.java	Tue Dec 16 05:53:51 2014 -0800
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,146 +0,0 @@
-/*
- * CDDL HEADER START
- *
- * The contents of this file are subject to the terms of the
- * Common Development and Distribution License (the "License").
- * You may not use this file except in compliance with the License.
- *
- * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
- * or http://www.opensolaris.org/os/licensing.
- * See the License for the specific language governing permissions
- * and limitations under the License.
- *
- * When distributing Covered Code, include this CDDL HEADER in each
- * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
- * If applicable, add the following below this CDDL HEADER, with the
- * fields enclosed by brackets "[]" replaced with your own identifying
- * information: Portions Copyright [yyyy] [name of copyright owner]
- *
- * CDDL HEADER END
- */
-
-/*
- * Copyright (c) 2009, 2012, Oracle and/or its affiliates. All rights reserved.
- */
-
-package com.oracle.solaris.vp.util.misc.event;
-
-public class IntervalEventQueue {
-    //
-    // Enums
-    //
-
-    public enum Type {
-	ADD,
-	REMOVE,
-    }
-
-    //
-    // Instance data
-    //
-
-    private IntervalEventSource source;
-    private IntervalListeners listeners;
-    private Type type;
-    private int first;
-    private int last;
-
-    //
-    // Constructors
-    //
-
-    public IntervalEventQueue(IntervalEventSource source,
-	IntervalListeners listeners) {
-
-	this.source = source;
-	this.listeners = listeners;
-    }
-
-    //
-    // IntervalEventQueue methods
-    //
-
-    public synchronized void addInterval(int f, int l, Type t) {
-	if (f > l || f < 0)
-	    throw new IllegalArgumentException(Integer.toString(f));
-
-	/*
-	 * We need to map l and f to pre-previous-removes values so we
-	 * can accurately compare them to first and last.  (The tests we
-	 * perform are invariant under addition, so we only need to do
-	 * this for removes).
-	 */
-	int rawf = f;
-	int rawl = l;
-	if (type == Type.REMOVE && t == Type.REMOVE) {
-	    int total = last - first + 1;
-	    if (f >= first)
-		f += total;
-	    if (l >= first)
-		l += total;
-	}
-
-	/*
-	 * If this is a new event type or a disjoint interval, flush
-	 * and start with a fresh interval.
-	 */
-	if (t != type || l < first  - 1 || f > last + 1) {
-	    flush();
-	    first = rawf;
-	    last = rawl;
-	    type = t;
-	    return;
-	}
-
-	/*
-	 * Extend the range as necessary.
-	 */
-	if (type == Type.REMOVE) {
-	    /*
-	     * We abut or straddle the existing range; extend the
-	     * appropriate limits.
-	     */
-	    first = Math.min(f, first);
-	    last = Math.max(l, last);
-	} else {
-	    /*
-	     * We're inserting into the existing range; add our length
-	     * to its.
-	     */
-	    last += (l - f + 1);
-	}
-    }
-
-    public void addIndex(int index, Type type) {
-	addInterval(index, index, type);
-    }
-
-    public synchronized void flush() {
-	if (type != null) {
-	    switch (type) {
-		case ADD:
-		    listeners.intervalAdded(
-			new IntervalEvent(source, first, last));
-		    break;
-
-		case REMOVE:
-		    listeners.intervalRemoved(
-			new IntervalEvent(source, first, last));
-		    break;
-	    }
-	}
-	type = null;
-    }
-
-    public synchronized int getFirstIndex() {
-	return first;
-    }
-
-    public synchronized int getLastIndex() {
-	return last;
-    }
-
-    public synchronized Type getType() {
-	return type;
-    }
-}