43 lines
1.0 KiB
JavaScript
43 lines
1.0 KiB
JavaScript
let externalLibLocation = null;
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let loadedExternalLibs = new Set ();
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export function SetExternalLibLocation (newExternalLibLocation)
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{
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externalLibLocation = newExternalLibLocation;
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}
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export function GetExternalLibPath (libName)
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{
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if (externalLibLocation === null) {
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return null;
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}
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return externalLibLocation + '/' + libName;
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}
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export function LoadExternalLibrary (libName)
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{
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return new Promise ((resolve, reject) => {
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if (externalLibLocation === null) {
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reject ();
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return;
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}
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if (loadedExternalLibs.has (libName)) {
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resolve ();
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return;
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}
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let scriptElement = document.createElement ('script');
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scriptElement.type = 'text/javascript';
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scriptElement.src = GetExternalLibPath (libName);
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scriptElement.onload = () => {
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loadedExternalLibs.add (libName);
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resolve ();
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};
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scriptElement.onerror = () => {
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reject ();
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};
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document.head.appendChild (scriptElement);
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});
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}
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