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Load hdf5 from buffer #2

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Load hdf5 from buffer #2

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9c91b33
Load hdf5 from buffer
minottic Jul 29, 2025
e9bf775
Add relative width
minottic Jul 30, 2025
0448f83
Add isConnected if
minottic Jul 30, 2025
ef472e3
Fix width and height
minottic Jul 30, 2025
cbb8ebb
Prevent from defining multiple times
minottic Jul 30, 2025
b6de74d
Add name to file
minottic Jul 30, 2025
2bacaeb
Use filename instead
minottic Jul 30, 2025
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15 changes: 8 additions & 7 deletions app/public/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -15,17 +15,18 @@
</head>
<body>
<h1>H5Web Web Component Test</h1>
<input type="file" id="fileInput" />
<h5web-viewer id="viewer"></h5web-viewer>

<script src="../dist/h5web.bundle.js"></script>
<script>
document.getElementById('fileInput').addEventListener('change', (event) => {
const file = event.target.files[0];
if (file) {
document.getElementById('viewer').file = file;
}
});
fetch('http://backend.localhost/api/v3/datasets/PID.SAMPLE.PREFIX%2Fukri_ds3/attachments')
.then(response => {
if (!response.ok) throw new Error('Network response was not ok');
return response.json();
})
.then(buffer => {
document.getElementById('viewer').base64Data = buffer[0].thumbnail;
})
</script>
</body>
</html>
26 changes: 23 additions & 3 deletions app/src/h5-element.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@ export class H5WebViewer extends HTMLElement {
private shadow?: ShadowRoot;
private container?: HTMLDivElement;
private _file?: File;
private _fileName?: string

static get observedAttributes() {
return [];
Expand All @@ -34,9 +35,28 @@ export class H5WebViewer extends HTMLElement {
this.unmount();
}

set file(file: File) {
this._file = file;
this.mount();
set base64Data(base64Data: string) {
this._file = this.base64ToFile(base64Data);
if (this.container && this.isConnected) {
this.mount();
}
}

set fileName(name: string) {
this._fileName = name;
if (this.container && this.isConnected) {
this.mount();
}
}

private base64ToFile(base64Data: string, filename = this._fileName, mimeType = ''): File {
const base64 = base64Data.split(',')[1]
const binary = atob(base64);
const bytes = new Uint8Array(binary.length);
for (let i = 0; i < binary.length; i++) {
bytes[i] = binary.charCodeAt(i);
}
return new File([bytes], filename as string, { type: mimeType });
}

private mount() {
Expand Down
2 changes: 1 addition & 1 deletion app/src/h5-wrapper.tsx
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Expand Up @@ -11,7 +11,7 @@ function H5Wrapper({ file }: Props) {
}

return (
<div style={{ height: '100vh' }}>
<div style={{ width: '800px', height: '600px' }}>
<H5WasmLocalFileProvider file={file}>
<App />
</H5WasmLocalFileProvider>
Expand Down
4 changes: 3 additions & 1 deletion app/src/index.ts
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Original file line number Diff line number Diff line change
@@ -1,3 +1,5 @@
import { H5WebViewer } from "./h5-element";

customElements.define('h5web-viewer', H5WebViewer);
if (!customElements.get('h5web-viewer')) {
customElements.define('h5web-viewer', H5WebViewer);
}