/*
File: qtp_poster.js
Version: <2.0>
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Neither the name, trademarks, service marks or logos of Apple Computer,
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*/
if (typeof(QTP) == "undefined") {
/** QTP is a namespace for QuickTime Player javascript objects. */
QTP = {};
}
/**
* Include the necessary prerequisites for this script:
* QTP.Movie, QTP.Controller, and QTP.UI:
*/
{
var head = document.getElementsByTagName('head')[0];
var scripts = $A(document.getElementsByTagName('script'));
var baseURL;
scripts.each(function(script) {
var src = script.getAttribute('src');
if(typeof(src) == 'undefined')
return;
var match = src.match(/(.*)qtp_poster.js/);
if(!match)
return;
baseURL = src.match(/(.*)qtp_poster.js/)[1];
if(typeof(baseURL) != 'undefined')
throw($break);
});
var include = function(url) {
var script = document.createElement('script');
script.setAttribute('language', 'javascript');
script.setAttribute('type', 'text/javascript');
script.setAttribute('src', url);
head.appendChild(script);
};
if(typeof(QTP.Movie) == "undefined")
include(baseURL + "qtp_movie.js");
if(typeof(QTP.Button) == "undefined")
include(baseURL + "qtp_ui.js");
if(typeof(QTP.MovieController) == "undefined")
include(baseURL + "qtp_controller.js");
}
/**
* Creates an object which listens for a mouse click, intercepts it, and creates a DOM element
* in response. Creates a QTP.Movie using the url
parameter, and a QTP.MovieController
* object for that movie.
* @param {String} url Initializes the object's url member
* @class Poster
* @constructor
*/
QTP.Poster = function(url)
{
this.url = url;
};
/**
* URL to use when activating the popup DOM element.
* @type String
*/
QTP.Poster.prototype.url = null;
/**
* Caches the movie created when the popup is activated.
* @type QTP.Movie
*/
QTP.Poster.prototype.movie = null;
/**
* Caches the "click to play" DOM element.
* @type Element
*/
QTP.Poster.playButton = null;
/**
* Caches the poster image
* @type Element
*/
QTP.Poster.img = null;
/**
* Caches the DOM movie wrapper element
* @type Element
*/
QTP.Poster.element = null;
/**
* Caches the movie controller.
* @type QTP.Controller
*/
QTP.Poster.controller = null;
/**
* Determines whether to allow the popup to fade into existence. Set this
* to false
to disable the fade behavior.
* @type boolean
*/
QTP.Poster.prototype.fadeIn = true;
/**
* Sets the default clickText of the popup DOM element. Set this to another String
* to change the text displayed in the poster element.
* @type String
*/
QTP.Poster.prototype.clickText = "Click to Play";
/**
* Sets the default className of the movieController DOM element. Set this to another String
* to change the defailt controller className.
* @type String
*/
QTP.Poster.prototype.controllerType = 'QTP_Poster';
/**
* Sets the default className for the poster DOM element. Set this to another String to
* change the default poster className.
* @type String
*/
QTP.Poster.prototype.className = 'QTP';
/**
* Sets the default attributes to be passed to QTP.Movie when the movie is instantiated.
* Change or add attributes to control the movie created by the poster object.
*/
QTP.Poster.prototype.attributes = {
controller: 'false',
autoplay: 'true',
bgcolor: 'black',
scale: 'aspect',
postdomevents: 'true'
};
/**
* Caches whether the movie element is currently popped up.
* @type boolean
*/
QTP.Poster.prototype.swapped = false;
/**
* Walks through the DOM heirarchy, looking for <a>
tags with a rel
* attribute of 'qtpopup'
. For each it finds, the function creates a new Poster
* object and attaches the object to the link as its popup
member. The Poster
* object listens for the link's click
event.
* @example
* <script type="javascript" src="qtp_library.js"></script>
* <script type="javascript" src="qtp_ui.js"></script>
* <script type="javascript" src="qtp_controller.js"></script>
* <script type="javascript" src="qtp_popup.js"></script>
* ...
* <a href="myMovie.mov" rel="qtpopup">
*/
QTP.Poster.instantiatePosters = function()
{
if (navigator.platform.indexOf('iPhone') > -1)
return;
// Check for prerequisites before continuing:
if(typeof(QTP.Movie) == "undefined" || typeof(QTP.Button) == "undefined" || typeof(QTP.MovieController) == "undefined")
{
setTimeout(QTP.Poster.instantiatePosters, 100);
return;
}
var links = $A(document.getElementsByTagName('a'));
var posters = links.findAll(function(link){ return link.rel && link.rel == 'qtposter'; });
posters.each(function(link){
var movieUrl = link.href;
var img = link.getElementsByTagName('img')[0];
if (navigator.platform.indexOf('iPhone') > -1)
{
var movie = new QTP.Movie({src:movieUrl});
link.parentNode.replaceChild(movie.element, link);
return;
}
var poster = new QTP.Poster(movieUrl);
var element = document.createElement('div');
if(Element.hasAttribute(img, 'width'))
poster.attributes.width = parseInt(img.getAttribute('width'));
if(Element.hasAttribute(img, 'height'))
poster.attributes.height = parseInt(img.getAttribute('height'));
if(!Element.hasAttribute(element, 'className'))
element.className = poster.className;
poster.element = element;
element.poster = poster;
element.style.position = 'relative';
var playContainer = element.appendChild(document.createElement('div'));
playContainer.className = 'playContainer';
poster.play = playContainer.appendChild(document.createElement('span'));
poster.play.innerHTML = poster.clickText;
poster.play.className = 'playButton';
QTP.Poster.FixOperaOpacity(poster.play);
element.appendChild(img);
poster.img = img;
if(link.getAttribute('jscontroller')=='false')
{
poster.attributes.controller = 'true';
}
else
{
poster.controller = new QTP.MovieController(poster.controllerType);
poster.controller.setMovie(poster);
element.appendChild(poster.controller.element);
}
element.onclick = poster.posterListener.bindAsEventListener(poster);
link.parentNode.replaceChild(element, link);
});
};
/**
* Static utility function which fixes misalignment in the default movie controller.
* @param {Element} movie element to fix
*/
QTP.Poster.FixIEController = function(element)
{
if(navigator.appName != "Microsoft Internet Explorer")
return;
if(!element.GetControllerVisible());
setTimeout( function() { element.SetControllerVisible(true); }, 100);
}
/**
* Static utility function to fix the opacity problems present in Opera.
* @param {Element} element to fix
*/
QTP.Poster.FixOperaOpacity = function(element)
{
if(navigator.appName != "Opera")
return;
element.style.opacity = "1.0";
}
/**
* Event listener which calls poster()
once, and prevents the poster action from
* being called again.
* @param {Event} event The instigating event
*/
QTP.Poster.prototype.posterListener = function(event)
{
if(this.swapped)
return;
this.swapped = true;
Event.stop(event);
this.play.style.display = 'none';
this.img.style.opacity = 1.0;
var intervalId = setInterval(function() {
var opacity = parseFloat(this.img.style.opacity);
opacity = Math.max(0.0, opacity - 0.2);
this.img.style.opacity = opacity;
this.img.style.filter = 'alpha(opacity='+(opacity*100)+')';
}.bind(this), 25);
setTimeout(function() {
clearInterval(intervalId);
var attributes = this.attributes;
if(Element.hasAttribute(this.element, 'width'))
attributes.width = this.element.getAttribute('width');
if(Element.hasAttribute(this.element, 'height'))
attributes.height = this.element.getAttribute('height');
attributes.src = this.url;
var movie = new QTP.Movie(attributes);
this.movie = movie;
if(this.controller)
this.controller.setMovie(movie);
this.element.replaceChild(movie.element, this.img);
if(attributes.controller != 'false')
QTP.Poster.FixIEController(movie.element);
}.bind(this), 250);
return true;
};
Event.observe(window, 'load', QTP.Poster.instantiatePosters);