/**
* Embed a Flash applications in a standard manner and communicate with it
* via External Interface.
* @module swf
*/
var Event = Y.Event,
SWFDetect = Y.SWFDetect,
Lang = Y.Lang,
uA = Y.UA,
Node = Y.Node,
Escape = Y.Escape,
// private
FLASH_CID = "clsid:d27cdb6e-ae6d-11cf-96b8-444553540000",
FLASH_TYPE = "application/x-shockwave-flash",
FLASH_VER = "10.0.22",
EXPRESS_INSTALL_URL = "http://fpdownload.macromedia.com/pub/flashplayer/update/current/swf/autoUpdater.swf?" + Math.random(),
EVENT_HANDLER = "SWF.eventHandler",
possibleAttributes = {align:"", allowFullScreen:"", allowNetworking:"", allowScriptAccess:"", base:"", bgcolor:"", menu:"", name:"", quality:"", salign:"", scale:"", tabindex:"", wmode:""};
/**
* The SWF utility is a tool for embedding Flash applications in HTML pages.
* @module swf
* @title SWF Utility
* @requires event-custom, node, swfdetect
*/
/**
* Creates the SWF instance and keeps the configuration data
*
* @class SWF
* @augments Y.Event.Target
* @constructor
* @param {String|HTMLElement} id The id of the element, or the element itself that the SWF will be inserted into.
* The width and height of the SWF will be set to the width and height of this container element.
* @param {String} swfURL The URL of the SWF to be embedded into the page.
* @param {Object} p_oAttributes (optional) Configuration parameters for the Flash application and values for Flashvars
* to be passed to the SWF. The p_oAttributes object allows the following additional properties:
* <dl>
* <dt>version : String</dt>
* <dd>The minimum version of Flash required on the user's machine.</dd>
* <dt>fixedAttributes : Object</dt>
* <dd>An object literal containing one or more of the following String keys and their values: <code>align,
* allowFullScreen, allowNetworking, allowScriptAccess, base, bgcolor, menu, name, quality, salign, scale,
* tabindex, wmode.</code> event from the thumb</dd>
* </dl>
*/
function SWF (p_oElement /*:String*/, swfURL /*:String*/, p_oAttributes /*:Object*/ ) {
this._id = Y.guid("yuiswf");
var _id = this._id;
var oElement = Node.one(p_oElement);
var p_oAttributes = p_oAttributes || {};
var flashVersion = p_oAttributes.version || FLASH_VER;
var flashVersionSplit = (flashVersion + '').split(".");
var isFlashVersionRight = SWFDetect.isFlashVersionAtLeast(parseInt(flashVersionSplit[0], 10), parseInt(flashVersionSplit[1], 10), parseInt(flashVersionSplit[2], 10));
var canExpressInstall = (SWFDetect.isFlashVersionAtLeast(8,0,0));
var shouldExpressInstall = canExpressInstall && !isFlashVersionRight && p_oAttributes.useExpressInstall;
var flashURL = (shouldExpressInstall)?EXPRESS_INSTALL_URL:swfURL;
var objstring = '<object ';
var w, h;
var flashvarstring = "yId=" + Y.id + "&YUISwfId=" + _id + "&YUIBridgeCallback=" + EVENT_HANDLER + "&allowedDomain=" + document.location.hostname;
Y.SWF._instances[_id] = this;
if (oElement && (isFlashVersionRight || shouldExpressInstall) && flashURL) {
objstring += 'id="' + _id + '" ';
if (uA.ie) {
objstring += 'classid="' + FLASH_CID + '" ';
} else {
objstring += 'type="' + FLASH_TYPE + '" data="' + Escape.html(flashURL) + '" ';
}
w = "100%";
h = "100%";
objstring += 'width="' + w + '" height="' + h + '">';
if (uA.ie) {
objstring += '<param name="movie" value="' + Escape.html(flashURL) + '"/>';
}
for (var attribute in p_oAttributes.fixedAttributes) {
if (possibleAttributes.hasOwnProperty(attribute)) {
objstring += '<param name="' + Escape.html(attribute) + '" value="' + Escape.html(p_oAttributes.fixedAttributes[attribute]) + '"/>';
}
}
for (var flashvar in p_oAttributes.flashVars) {
var fvar = p_oAttributes.flashVars[flashvar];
if (Lang.isString(fvar)) {
flashvarstring += "&" + Escape.html(flashvar) + "=" + Escape.html(encodeURIComponent(fvar));
}
}
if (flashvarstring) {
objstring += '<param name="flashVars" value="' + flashvarstring + '"/>';
}
objstring += "</object>";
oElement.setContent(objstring);
this._swf = Node.one("#" + _id);
} else {
/**
* Fired when the Flash player version on the user's machine is
* below the required value.
*
* @event wrongflashversion
*/
var event = {};
event.type = "wrongflashversion";
this.publish("wrongflashversion", {fireOnce:true});
this.fire("wrongflashversion", event);
}
}
/**
* @private
* The static collection of all instances of the SWFs on the page.
* @property _instances
* @type Object
*/
SWF._instances = SWF._instances || {};
/**
* @private
* Handles an event coming from within the SWF and delegate it
* to a specific instance of SWF.
* @method eventHandler
* @param swfid {String} the id of the SWF dispatching the event
* @param event {Object} the event being transmitted.
*/
SWF.eventHandler = function (swfid, event) {
SWF._instances[swfid]._eventHandler(event);
};
SWF.prototype = {
/**
* @private
* Propagates a specific event from Flash to JS.
* @method _eventHandler
* @param event {Object} The event to be propagated from Flash.
*/
_eventHandler: function(event) {
if (event.type === "swfReady") {
this.publish("swfReady", {fireOnce:true});
this.fire("swfReady", event);
} else if(event.type === "log") {
Y.log(event.message, event.category, this.toString());
} else {
this.fire(event.type, event);
}
},
/**
* Calls a specific function exposed by the SWF's
* ExternalInterface.
* @method callSWF
* @param func {String} the name of the function to call
* @param args {Array} the set of arguments to pass to the function.
*/
callSWF: function (func, args)
{
if (!args) {
args= [];
}
if (this._swf._node[func]) {
return(this._swf._node[func].apply(this._swf._node, args));
} else {
return null;
}
},
/**
* Public accessor to the unique name of the SWF instance.
*
* @method toString
* @return {String} Unique name of the SWF instance.
*/
toString: function()
{
return "SWF " + this._id;
}
};
Y.augment(SWF, Y.EventTarget);
Y.SWF = SWF;
