Michael Bayne
b6f5317ad2
git-svn-id: svn+ssh://src.earth.threerings.net/nenya/trunk@158 ed5b42cb-e716-0410-a449-f6a68f950b19
96 lines
2.9 KiB
Java
96 lines
2.9 KiB
Java
//
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// $Id$
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//
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// Nenya library - tools for developing networked games
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// Copyright (C) 2002-2007 Three Rings Design, Inc., All Rights Reserved
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// http://www.threerings.net/code/nenya/
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//
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// This library is free software; you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License as published
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// by the Free Software Foundation; either version 2.1 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package com.threerings.media.animation;
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/**
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* An abstract class that simplifies a common animation usage case in
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* which a number of animations are created and the creator would like to
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* be able to perform specific actions when each animation has completed
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* (see {@link #animationDidFinish} and/or when all animations are
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* finished (see {@link #allAnimationsFinished}.)
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*/
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public abstract class AnimationWaiter
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implements AnimationObserver
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{
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/**
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* Adds an animation to the animation waiter for observation.
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*/
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public void addAnimation (Animation anim)
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{
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anim.addAnimationObserver(this);
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_animCount++;
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}
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/**
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* Adds the supplied animations to the animation waiter for
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* observation.
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*/
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public void addAnimations (Animation[] anims)
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{
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int acount = anims.length;
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for (int ii = 0; ii < acount; ii++) {
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addAnimation(anims[ii]);
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}
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}
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// documentation inherited from interface
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public void animationStarted (Animation anim, long when)
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{
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}
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// documentation inherited from interface
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public void animationCompleted (Animation anim, long when)
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{
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// note that the animation is finished
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animationDidFinish(anim);
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_animCount--;
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// let derived classes know when all is done
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if (_animCount == 0) {
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allAnimationsFinished();
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}
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}
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/**
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* Called when an animation being observed by the waiter has
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* completed its business. Derived classes may wish to override
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* this method to engage in their unique antics.
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*/
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protected void animationDidFinish (Animation anim)
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{
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// nothing for now
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}
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/**
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* Called when all animations being observed by the waiter have
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* completed their business. Derived classes may wish to override
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* this method to engage in their unique antics.
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*/
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protected void allAnimationsFinished ()
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{
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// nothing for now
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}
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/** The number of animations. */
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protected int _animCount;
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}
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