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59 lines
902 B
59 lines
902 B
export class DataFile {
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constructor( value ) {
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this.isDataFile = true;
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this.value = value;
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this.url = null;
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}
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setValue( value ) {
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this.value = value;
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this.url = null;
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}
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isURL( uri ) {
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const pattern = new RegExp( '^((ft|htt)ps?:\\/\\/)?' + // protocol
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'((([a-z\\d]([a-z\\d-]*[a-z\\d])*)\\.)+[a-z]{2,}|' + // domain name and extension
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'((\\d{1,3}\\.){3}\\d{1,3}))' + // OR ip (v4) address
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'(\\:\\d+)?' + // port
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'(\\/[-a-z\\d%@_.~+&:]*)*' + // path
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'(\\?[;&a-z\\d%@_.,~+&:=-]*)?' + // query string
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'(\\#[-a-z\\d_]*)?$', 'i' ); // fragment locator
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return pattern.test( uri );
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}
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getURL() {
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let url = this.url;
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if ( url === null ) {
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const value = this.value;
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if ( value instanceof File ) {
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url = URL.createObjectURL( value );
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} else {
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url = value;
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}
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this.url = this.isURL( url ) ? url : null;
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}
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return url;
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}
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}
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