299 lines
10 KiB
JavaScript
299 lines
10 KiB
JavaScript
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/*! SWFObject v2.2 <http://code.google.com/p/swfobject/>
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is released under the MIT License <http://www.opensource.org/licenses/mit-license.php>
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*/
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var swfobject = function() {
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var UNDEF = "undefined",
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OBJECT = "object",
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SHOCKWAVE_FLASH = "Shockwave Flash",
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SHOCKWAVE_FLASH_AX = "ShockwaveFlash.ShockwaveFlash",
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FLASH_MIME_TYPE = "application/x-shockwave-flash",
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EXPRESS_INSTALL_ID = "SWFObjectExprInst",
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win = window,
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doc = document,
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nav = navigator,
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plugin = false,
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regObjArr = [],
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objIdArr = [],
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storedAltContent,
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storedAltContentId,
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storedCallbackFn,
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storedCallbackObj,
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autoHideShow = true,
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/* Centralized function for browser feature detection
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- User agent string detection is only used when no good alternative is possible
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- Is executed directly for optimal performance
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*/
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ua = function() {
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var w3cdom = typeof doc.getElementById != UNDEF && typeof doc.getElementsByTagName != UNDEF && typeof doc.createElement != UNDEF,
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u = nav.userAgent.toLowerCase(),
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p = nav.platform.toLowerCase(),
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windows = p ? /win/.test(p) : /win/.test(u),
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mac = p ? /mac/.test(p) : /mac/.test(u),
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webkit = /webkit/.test(u) ? parseFloat(u.replace(/^.*webkit\/(\d+(\.\d+)?).*$/, "$1")) : false, // returns either the webkit version or false if not webkit
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ie = !+"\v1", // feature detection based on Andrea Giammarchi's solution: http://webreflection.blogspot.com/2009/01/32-bytes-to-know-if-your-browser-is-ie.html
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playerVersion = [0,0,0],
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d = null;
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if (typeof nav.plugins != UNDEF && typeof nav.plugins[SHOCKWAVE_FLASH] == OBJECT) {
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d = nav.plugins[SHOCKWAVE_FLASH].description;
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if (d && !(typeof nav.mimeTypes != UNDEF && nav.mimeTypes[FLASH_MIME_TYPE] && !nav.mimeTypes[FLASH_MIME_TYPE].enabledPlugin)) { // navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin indicates whether plug-ins are enabled or disabled in Safari 3+
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plugin = true;
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ie = false; // cascaded feature detection for Internet Explorer
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d = d.replace(/^.*\s+(\S+\s+\S+$)/, "$1");
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playerVersion[0] = parseInt(d.replace(/^(.*)\..*$/, "$1"), 10);
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playerVersion[1] = parseInt(d.replace(/^.*\.(.*)\s.*$/, "$1"), 10);
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playerVersion[2] = /[a-zA-Z]/.test(d) ? parseInt(d.replace(/^.*[a-zA-Z]+(.*)$/, "$1"), 10) : 0;
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}
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}
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else if (typeof win.ActiveXObject != UNDEF) {
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try {
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var a = new ActiveXObject(SHOCKWAVE_FLASH_AX);
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if (a) { // a will return null when ActiveX is disabled
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d = a.GetVariable("$version");
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if (d) {
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ie = true; // cascaded feature detection for Internet Explorer
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d = d.split(" ")[1].split(",");
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playerVersion = [parseInt(d[0], 10), parseInt(d[1], 10), parseInt(d[2], 10)];
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}
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}
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}
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catch(e) {}
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}
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return { w3:w3cdom, pv:playerVersion, wk:webkit, ie:ie, win:windows, mac:mac };
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}()
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/* Main function
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- Will preferably execute onDomLoad, otherwise onload (as a fallback)
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*/
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function main() {
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if (plugin) { testPlayerVersion(); }
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else { matchVersions(); }
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}
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/* Detect the Flash Player version for non-Internet Explorer browsers
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- Detecting the plug-in version via the object element is more precise than using the plugins collection item's description:
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a. Both release and build numbers can be detected
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b. Avoid wrong descriptions by corrupt installers provided by Adobe
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c. Avoid wrong descriptions by multiple Flash Player entries in the plugin Array, caused by incorrect browser imports
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- Disadvantage of this method is that it depends on the availability of the DOM, while the plugins collection is immediately available
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*/
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function testPlayerVersion() {
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var b = doc.getElementsByTagName("body")[0];
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var o = createElement(OBJECT);
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o.setAttribute("type", FLASH_MIME_TYPE);
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var t = b.appendChild(o);
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if (t) {
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var counter = 0;
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(function(){
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if (typeof t.GetVariable != UNDEF) {
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var d = t.GetVariable("$version");
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if (d) {
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d = d.split(" ")[1].split(",");
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ua.pv = [parseInt(d[0], 10), parseInt(d[1], 10), parseInt(d[2], 10)];
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}
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}
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else if (counter < 10) {
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counter++;
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setTimeout(arguments.callee, 10);
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return;
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}
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b.removeChild(o);
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t = null;
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matchVersions();
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})();
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}
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else {
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matchVersions();
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}
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}
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/* Cross-browser dynamic SWF creation
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*/
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function createSWF(attObj, parObj, id) {
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var r, el = getElementById(id);
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if (ua.wk && ua.wk < 312) { return r; }
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if (el) {
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if (typeof attObj.id == UNDEF) { // if no 'id' is defined for the object element, it will inherit the 'id' from the alternative content
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attObj.id = id;
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}
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if (ua.ie && ua.win) { // Internet Explorer + the HTML object element + W3C DOM methods do not combine: fall back to outerHTML
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var att = "";
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for (var i in attObj) {
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if (attObj[i] != Object.prototype[i]) { // filter out prototype additions from other potential libraries
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if (i.toLowerCase() == "data") {
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parObj.movie = attObj[i];
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}
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else if (i.toLowerCase() == "styleclass") { // 'class' is an ECMA4 reserved keyword
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att += ' class="' + attObj[i] + '"';
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}
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else if (i.toLowerCase() != "classid") {
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att += ' ' + i + '="' + attObj[i] + '"';
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}
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}
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}
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var par = "";
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for (var j in parObj) {
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if (parObj[j] != Object.prototype[j]) { // filter out prototype additions from other potential libraries
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par += '<param name="' + j + '" value="' + parObj[j] + '" />';
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}
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}
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el.outerHTML = '<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"' + att + '>' + par + '</object>';
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objIdArr[objIdArr.length] = attObj.id; // stored to fix object 'leaks' on unload (dynamic publishing only)
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r = getElementById(attObj.id);
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}
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else { // well-behaving browsers
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var o = createElement(OBJECT);
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o.setAttribute("type", FLASH_MIME_TYPE);
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for (var m in attObj) {
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if (attObj[m] != Object.prototype[m]) { // filter out prototype additions from other potential libraries
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if (m.toLowerCase() == "styleclass") { // 'class' is an ECMA4 reserved keyword
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o.setAttribute("class", attObj[m]);
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}
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else if (m.toLowerCase() != "classid") { // filter out IE specific attribute
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o.setAttribute(m, attObj[m]);
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}
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}
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}
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for (var n in parObj) {
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if (parObj[n] != Object.prototype[n] && n.toLowerCase() != "movie") { // filter out prototype additions from other potential libraries and IE specific param element
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createObjParam(o, n, parObj[n]);
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}
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}
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el.parentNode.replaceChild(o, el);
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r = o;
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}
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}
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return r;
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}
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function createObjParam(el, pName, pValue) {
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var p = createElement("param");
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p.setAttribute("name", pName);
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p.setAttribute("value", pValue);
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el.appendChild(p);
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}
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/* Cross-browser SWF removal
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- Especially needed to safely and completely remove a SWF in Internet Explorer
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*/
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/* Functions to optimize JavaScript compression
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*/
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function getElementById(id) {
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var el = null;
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try {
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el = doc.getElementById(id);
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}
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catch (e) {}
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return el;
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}
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function createElement(el) {
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return doc.createElement(el);
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}
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/* Flash Player and SWF content version matching
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*/
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function hasPlayerVersion(rv) {
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var pv = ua.pv, v = rv.split(".");
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v[0] = parseInt(v[0], 10);
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v[1] = parseInt(v[1], 10) || 0; // supports short notation, e.g. "9" instead of "9.0.0"
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v[2] = parseInt(v[2], 10) || 0;
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return (pv[0] > v[0] || (pv[0] == v[0] && pv[1] > v[1]) || (pv[0] == v[0] && pv[1] == v[1] && pv[2] >= v[2])) ? true : false;
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}
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/* Filter to avoid XSS attacks
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*/
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function urlEncodeIfNecessary(s) {
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var regex = /[\\\"<>\.;]/;
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var hasBadChars = regex.exec(s) != null;
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return hasBadChars && typeof encodeURIComponent != UNDEF ? encodeURIComponent(s) : s;
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}
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return {
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/* Public API
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- Reference: http://code.google.com/p/swfobject/wiki/documentation
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*/
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embedSWF: function(swfUrlStr, replaceElemIdStr, widthStr, heightStr, swfVersionStr, flashvarsObj, parObj, attObj, callbackFn) {
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var callbackObj = {success:false, id:replaceElemIdStr};
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if (ua.w3 && !(ua.wk && ua.wk < 312) && swfUrlStr && replaceElemIdStr && widthStr && heightStr && swfVersionStr) {
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widthStr += ""; // auto-convert to string
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heightStr += "";
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var att = {};
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if (attObj && typeof attObj === OBJECT) {
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for (var i in attObj) { // copy object to avoid the use of references, because web authors often reuse attObj for multiple SWFs
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att[i] = attObj[i];
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}
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}
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att.data = swfUrlStr;
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att.width = widthStr;
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att.height = heightStr;
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var par = {};
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if (parObj && typeof parObj === OBJECT) {
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for (var j in parObj) { // copy object to avoid the use of references, because web authors often reuse parObj for multiple SWFs
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par[j] = parObj[j];
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}
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}
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if (flashvarsObj && typeof flashvarsObj === OBJECT) {
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for (var k in flashvarsObj) { // copy object to avoid the use of references, because web authors often reuse flashvarsObj for multiple SWFs
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if (typeof par.flashvars != UNDEF) {
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par.flashvars += "&" + k + "=" + flashvarsObj[k];
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}
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else {
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par.flashvars = k + "=" + flashvarsObj[k];
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}
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}
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}
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if (hasPlayerVersion(swfVersionStr)) { // create SWF
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var obj = createSWF(att, par, replaceElemIdStr);
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callbackObj.success = true;
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callbackObj.ref = obj;
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}
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if (callbackFn) { callbackFn(callbackObj); }
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}
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else if (callbackFn) { callbackFn(callbackObj); }
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},
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ua: ua,
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getFlashPlayerVersion: function() {
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return { major:ua.pv[0], minor:ua.pv[1], release:ua.pv[2] };
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},
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hasFlashPlayerVersion: hasPlayerVersion,
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createSWF: function(attObj, parObj, replaceElemIdStr) {
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if (ua.w3) {
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return createSWF(attObj, parObj, replaceElemIdStr);
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}
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else {
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return undefined;
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}
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},
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getQueryParamValue: function(param) {
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var q = doc.location.search || doc.location.hash;
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if (q) {
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if (/\?/.test(q)) { q = q.split("?")[1]; } // strip question mark
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if (param == null) {
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return urlEncodeIfNecessary(q);
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}
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var pairs = q.split("&");
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for (var i = 0; i < pairs.length; i++) {
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if (pairs[i].substring(0, pairs[i].indexOf("=")) == param) {
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return urlEncodeIfNecessary(pairs[i].substring((pairs[i].indexOf("=") + 1)));
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}
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}
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}
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return "";
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}
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};
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}();
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