Struts example source code file (Animation.js)

This example Struts source code file (Animation.js) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Struts tags/keywords

The Struts Animation.js source code

/*
	Copyright (c) 2004-2006, The Dojo Foundation
	All Rights Reserved.

	Licensed under the Academic Free License version 2.1 or above OR the
	modified BSD license. For more information on Dojo licensing, see:

		http://dojotoolkit.org/community/licensing.shtml
*/



dojo.provide("dojo.animation.Animation");
dojo.require("dojo.animation.AnimationEvent");
dojo.require("dojo.lang.func");
dojo.require("dojo.math");
dojo.require("dojo.math.curves");
dojo.deprecated("dojo.animation.Animation is slated for removal in 0.5; use dojo.lfx.* instead.", "0.5");
dojo.animation.Animation = function (curve, duration, accel, repeatCount, rate) {
	if (dojo.lang.isArray(curve)) {
		curve = new dojo.math.curves.Line(curve[0], curve[1]);
	}
	this.curve = curve;
	this.duration = duration;
	this.repeatCount = repeatCount || 0;
	this.rate = rate || 25;
	if (accel) {
		if (dojo.lang.isFunction(accel.getValue)) {
			this.accel = accel;
		} else {
			var i = 0.35 * accel + 0.5;
			this.accel = new dojo.math.curves.CatmullRom([[0], [i], [1]], 0.45);
		}
	}
};
dojo.lang.extend(dojo.animation.Animation, {curve:null, duration:0, repeatCount:0, accel:null, onBegin:null, onAnimate:null, onEnd:null, onPlay:null, onPause:null, onStop:null, handler:null, _animSequence:null, _startTime:null, _endTime:null, _lastFrame:null, _timer:null, _percent:0, _active:false, _paused:false, _startRepeatCount:0, play:function (gotoStart) {
	if (gotoStart) {
		clearTimeout(this._timer);
		this._active = false;
		this._paused = false;
		this._percent = 0;
	} else {
		if (this._active && !this._paused) {
			return;
		}
	}
	this._startTime = new Date().valueOf();
	if (this._paused) {
		this._startTime -= (this.duration * this._percent / 100);
	}
	this._endTime = this._startTime + this.duration;
	this._lastFrame = this._startTime;
	var e = new dojo.animation.AnimationEvent(this, null, this.curve.getValue(this._percent), this._startTime, this._startTime, this._endTime, this.duration, this._percent, 0);
	this._active = true;
	this._paused = false;
	if (this._percent == 0) {
		if (!this._startRepeatCount) {
			this._startRepeatCount = this.repeatCount;
		}
		e.type = "begin";
		if (typeof this.handler == "function") {
			this.handler(e);
		}
		if (typeof this.onBegin == "function") {
			this.onBegin(e);
		}
	}
	e.type = "play";
	if (typeof this.handler == "function") {
		this.handler(e);
	}
	if (typeof this.onPlay == "function") {
		this.onPlay(e);
	}
	if (this._animSequence) {
		this._animSequence._setCurrent(this);
	}
	this._cycle();
}, pause:function () {
	clearTimeout(this._timer);
	if (!this._active) {
		return;
	}
	this._paused = true;
	var e = new dojo.animation.AnimationEvent(this, "pause", this.curve.getValue(this._percent), this._startTime, new Date().valueOf(), this._endTime, this.duration, this._percent, 0);
	if (typeof this.handler == "function") {
		this.handler(e);
	}
	if (typeof this.onPause == "function") {
		this.onPause(e);
	}
}, playPause:function () {
	if (!this._active || this._paused) {
		this.play();
	} else {
		this.pause();
	}
}, gotoPercent:function (pct, andPlay) {
	clearTimeout(this._timer);
	this._active = true;
	this._paused = true;
	this._percent = pct;
	if (andPlay) {
		this.play();
	}
}, stop:function (gotoEnd) {
	clearTimeout(this._timer);
	var step = this._percent / 100;
	if (gotoEnd) {
		step = 1;
	}
	var e = new dojo.animation.AnimationEvent(this, "stop", this.curve.getValue(step), this._startTime, new Date().valueOf(), this._endTime, this.duration, this._percent);
	if (typeof this.handler == "function") {
		this.handler(e);
	}
	if (typeof this.onStop == "function") {
		this.onStop(e);
	}
	this._active = false;
	this._paused = false;
}, status:function () {
	if (this._active) {
		return this._paused ? "paused" : "playing";
	} else {
		return "stopped";
	}
}, _cycle:function () {
	clearTimeout(this._timer);
	if (this._active) {
		var curr = new Date().valueOf();
		var step = (curr - this._startTime) / (this._endTime - this._startTime);
		var fps = 1000 / (curr - this._lastFrame);
		this._lastFrame = curr;
		if (step >= 1) {
			step = 1;
			this._percent = 100;
		} else {
			this._percent = step * 100;
		}
		if (this.accel && this.accel.getValue) {
			step = this.accel.getValue(step);
		}
		var e = new dojo.animation.AnimationEvent(this, "animate", this.curve.getValue(step), this._startTime, curr, this._endTime, this.duration, this._percent, Math.round(fps));
		if (typeof this.handler == "function") {
			this.handler(e);
		}
		if (typeof this.onAnimate == "function") {
			this.onAnimate(e);
		}
		if (step < 1) {
			this._timer = setTimeout(dojo.lang.hitch(this, "_cycle"), this.rate);
		} else {
			e.type = "end";
			this._active = false;
			if (typeof this.handler == "function") {
				this.handler(e);
			}
			if (typeof this.onEnd == "function") {
				this.onEnd(e);
			}
			if (this.repeatCount > 0) {
				this.repeatCount--;
				this.play(true);
			} else {
				if (this.repeatCount == -1) {
					this.play(true);
				} else {
					if (this._startRepeatCount) {
						this.repeatCount = this._startRepeatCount;
						this._startRepeatCount = 0;
					}
					if (this._animSequence) {
						this._animSequence._playNext();
					}
				}
			}
		}
	}
}});