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- Committer: a11patfr at his
- Date: 2013-03-28 14:56:16 UTC
- mto: (4.7.6 GammaBear)
- mto: This revision was merged to the branch mainline in revision 6.
- Revision ID: a11patfr@student.his.se-20130328145616-7otkydi3v47zwg30
Fixed formatting. trunk/svg Converter/SVG_httpAjax.js
- files modified:
- trunk/svg Converter/SVG_httpAjax.js
added
removed
trunk/svg Converter/SVG_httpAjax.js
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/*--------------------------------------------------------------------------------
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AJAX Queue
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----------------------------------------------------------------------------------*/
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var AJAXQueue = new Array;
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var AJAXServiceRunning=false;
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var AJAXReturnfunction;
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var httpAjax = false;
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function getSVG(fileName){
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paramstr="svgname="+escape(fileName);
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AjaxService("SVG_TO_CANVAS_III.php",paramstr,"returnedSVG");
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}
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/*--------------------------------------------------------------------------------
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AjaxService
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This is the only interface to the AJAX wrapper. This makes the ajax service
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browser agnostic and provides a single interface for all of the services.
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Each service uses a different url and a different parameter layout.
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----------------------------------------------------------------------------------*/
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function AjaxService(servicename,serviceparam,returnfunction){
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AJAXQueue.push(servicename);
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AJAXQueue.push(serviceparam);
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AJAXQueue.push(returnfunction);
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if(!AJAXServiceRunning){
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AJAXServiceRunning=true;
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AJAXReturnfunction=AJAXQueue.pop();
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var Aparam=AJAXQueue.pop();
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var Aservice=AJAXQueue.pop();
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AjaxServiceExec(Aservice,Aparam);
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}
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}
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/*--------------------------------------------------------------------------------
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AjaxService
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This is the only interface to the AJAX wrapper. This makes the ajax service
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browser agnostic and provides a single interface for all of the services.
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Each service uses a different url and a different parameter layout.
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----------------------------------------------------------------------------------*/
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function AjaxServiceExec(servicename,serviceparam){
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// Parameters are set, initiate AJAX engine
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if (window.XMLHttpRequest) {
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httpAjax = new XMLHttpRequest();
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if (httpAjax.overrideMimeType) {
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httpAjax.overrideMimeType('text/xml');
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}
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}else if(window.ActiveXObject){
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try{
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httpAjax = new ActiveXObject("Msxml2.XMLHTTP");
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}catch(e){
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try{
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httpAjax = new ActiveXObject("Microsoft.XMLHTTP");
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}catch(e){
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alert("Couldn�t build an AJAX instance.");
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return false;
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}
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}
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}
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// Send request to Server and initiate callback.
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try{
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httpAjax.onreadystatechange = getPage;
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}catch(e){
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alert("onreadystatechange didn�t go well!");
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return false;
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}try{
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httpAjax.open('POST', servicename, true);
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httpAjax.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;");
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}catch(e){
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alert("Couldn�t open url.");
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return false;
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}try{
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httpAjax.send(serviceparam);
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}catch(e){
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alert("Couldn�t send request.");
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return false;
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}
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return true;
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}
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/*--------------------------------------------------------------------------------
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getPage
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This is the AJAX callback function. It detects the invoking service and handles
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the reply from each service accordingly.
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----------------------------------------------------------------------------------*/
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function getPage() {
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if(httpAjax.readyState == 4){
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str=httpAjax.responseText;
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eval(AJAXReturnfunction+'(str);');
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if(AJAXQueue.length>0){
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AJAXReturnfunction=AJAXQueue.pop();
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var Aparam=AJAXQueue.pop();
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var Aservice=AJAXQueue.pop();
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AjaxServiceExec(Aservice,Aparam);
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}else{
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AJAXServiceRunning=false;
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}
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return true;
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}else{
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// If any other ready state than prepared, do nothing!
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}
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}
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/*--------------------------------------------------------------------------------
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AJAX Queue
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----------------------------------------------------------------------------------*/
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var AJAXQueue = new Array;
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var AJAXServiceRunning = false;
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var AJAXReturnfunction;
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var httpAjax = false;
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function getSVG(fileName) {
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paramstr = "svgname=" + escape(fileName);
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AjaxService("SVG_TO_CANVAS_III.php", paramstr, "returnedSVG");
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}
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/*--------------------------------------------------------------------------------
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AjaxService
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This is the only interface to the AJAX wrapper. This makes the ajax service
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browser agnostic and provides a single interface for all of the services.
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Each service uses a different url and a different parameter layout.
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----------------------------------------------------------------------------------*/
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function AjaxService(servicename, serviceparam, returnfunction) {
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AJAXQueue.push(servicename);
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AJAXQueue.push(serviceparam);
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AJAXQueue.push(returnfunction);
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if(!AJAXServiceRunning) {
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AJAXServiceRunning = true;
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AJAXReturnfunction = AJAXQueue.pop();
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var Aparam = AJAXQueue.pop();
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var Aservice = AJAXQueue.pop();
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AjaxServiceExec(Aservice, Aparam);
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}
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}
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/*--------------------------------------------------------------------------------
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AjaxService
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This is the only interface to the AJAX wrapper. This makes the ajax service
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browser agnostic and provides a single interface for all of the services.
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Each service uses a different url and a different parameter layout.
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----------------------------------------------------------------------------------*/
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function AjaxServiceExec(servicename, serviceparam) {
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// Parameters are set, initiate AJAX engine
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if(window.XMLHttpRequest) {
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httpAjax = new XMLHttpRequest();
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if(httpAjax.overrideMimeType) {
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httpAjax.overrideMimeType('text/xml');
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}
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} else if(window.ActiveXObject) {
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try {
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httpAjax = new ActiveXObject("Msxml2.XMLHTTP");
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} catch(e) {
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try {
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httpAjax = new ActiveXObject("Microsoft.XMLHTTP");
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} catch(e) {
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alert("Couldn�t build an AJAX instance.");
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return false;
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}
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}
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}
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// Send request to Server and initiate callback.
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try {
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httpAjax.onreadystatechange = getPage;
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} catch(e) {
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alert("onreadystatechange didn�t go well!");
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return false;
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} try {
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httpAjax.open('POST', servicename, true);
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httpAjax.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;");
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} catch(e) {
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alert("Couldn�t open url.");
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return false;
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} try {
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httpAjax.send(serviceparam);
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} catch(e) {
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alert("Couldn�t send request.");
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return false;
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}
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return true;
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}
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/*--------------------------------------------------------------------------------
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getPage
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This is the AJAX callback function. It detects the invoking service and handles
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the reply from each service accordingly.
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----------------------------------------------------------------------------------*/
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function getPage() {
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if(httpAjax.readyState == 4) {
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str=httpAjax.responseText;
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eval(AJAXReturnfunction + '(str);');
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if(AJAXQueue.length > 0) {
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AJAXReturnfunction = AJAXQueue.pop();
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var Aparam = AJAXQueue.pop();
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var Aservice = AJAXQueue.pop();
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AjaxServiceExec(Aservice, Aparam);
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} else {
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AJAXServiceRunning = false;
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}
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return true;
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} else {
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// If any other ready state than prepared, do nothing!
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}
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}
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