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/*
2022-05-22
The author disclaims copyright to this source code. In place of a
legal notice, here is a blessing:
* May you do good and not evil.
* May you find forgiveness for yourself and forgive others.
* May you share freely, never taking more than you give.
***********************************************************************
This file contains bootstrapping code used by various test scripts
which live in this file's directory.
*/
(function(){
/* querySelectorAll() proxy */
const EAll = function(/*[element=document,] cssSelector*/){
return (arguments.length>1 ? arguments[0] : document)
.querySelectorAll(arguments[arguments.length-1]);
};
/* querySelector() proxy */
const E = function(/*[element=document,] cssSelector*/){
return (arguments.length>1 ? arguments[0] : document)
.querySelector(arguments[arguments.length-1]);
};
const statusElement = E('#module-status');
const progressElement = E('#module-progress');
const spinnerElement = E('#module-spinner');
self.Module = {
/* ^^^ cannot declare that const because fiddle-module.js
(auto-generated) includes a decl for it and runs in this scope. */
preRun: [],
postRun: [],
//onRuntimeInitialized: function(){},
print: function(){
console.log(Array.prototype.slice.call(arguments));
},
printErr: function(){
console.error(Array.prototype.slice.call(arguments));
},
setStatus: function f(text){
if(!f.last) f.last = { time: Date.now(), text: '' };
if(text === f.last.text) return;
const m = text.match(/([^(]+)\((\d+(\.\d+)?)\/(\d+)\)/);
const now = Date.now();
if(m && now - f.last.time < 30) return; // if this is a progress update, skip it if too soon
f.last.time = now;
f.last.text = text;
if(m) {
text = m[1];
progressElement.value = parseInt(m[2])*100;
progressElement.max = parseInt(m[4])*100;
progressElement.hidden = false;
spinnerElement.hidden = false;
} else {
progressElement.remove();
if(!text) spinnerElement.remove();
}
if(text) statusElement.innerText = text;
else statusElement.remove();
},
totalDependencies: 0,
monitorRunDependencies: function(left) {
this.totalDependencies = Math.max(this.totalDependencies, left);
this.setStatus(left
? ('Preparing... (' + (this.totalDependencies-left)
+ '/' + this.totalDependencies + ')')
: 'All downloads complete.');
},
/* Loads sqlite3-api.js and calls the given callback (if
provided), passing it the sqlite3 module. Whether this is
synchronous or async depends on whether it's run in the
main thread or a worker.*/
loadSqliteAPI: function(callback){
const theScript = 'sqlite3-api.js';
if(self.importScripts){/*worker*/
importScripts(theScript);
if(callback) callback(self.sqlite3);
}else{/*main thread*/
new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.onload = resolve;
script.onerror = reject;
script.async = true;
script.src = theScript;
}).then(() => {
if(callback) callback(self.sqlite3);
});
}
}
};
})(self/*window or worker*/);
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