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// allows drag-dropping files into gradio image elements, and also pasting images from clipboard
function isValidImageList( files ) {
return files && files?.length === 1 && ['image/png', 'image/gif', 'image/jpeg'].includes(files[0].type);
}
function dropReplaceImage( imgWrap, files ) {
if ( ! isValidImageList( files ) ) {
return;
}
imgWrap.querySelector('.modify-upload button + button')?.click();
window.requestAnimationFrame( () => {
const fileInput = imgWrap.querySelector('input[type="file"]');
if ( fileInput ) {
fileInput.files = files;
fileInput.dispatchEvent(new Event('change'));
}
});
}
window.document.addEventListener('dragover', e => {
const target = e.composedPath()[0];
const imgWrap = target.closest('[data-testid="image"]');
if ( !imgWrap ) {
return;
}
e.stopPropagation();
e.preventDefault();
e.dataTransfer.dropEffect = 'copy';
});
window.document.addEventListener('drop', e => {
const target = e.composedPath()[0];
const imgWrap = target.closest('[data-testid="image"]');
if ( !imgWrap ) {
return;
}
e.stopPropagation();
e.preventDefault();
const files = e.dataTransfer.files;
dropReplaceImage( imgWrap, files );
});
window.addEventListener('paste', e => {
const files = e.clipboardData.files;
if ( ! isValidImageList( files ) ) {
return;
}
[...gradioApp().querySelectorAll('input[type=file][accept="image/x-png,image/gif,image/jpeg"]')]
.filter(input => !input.matches('.\\!hidden input[type=file]'))
.forEach(input => {
input.files = files;
input.dispatchEvent(new Event('change'))
});
[...gradioApp().querySelectorAll('[data-testid="image"]')]
.filter(imgWrap => !imgWrap.closest('.\\!hidden'))
.forEach(imgWrap => dropReplaceImage( imgWrap, files ));
});
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