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(function() {
const GRADIO_MIN_WIDTH = 320;
const GRID_TEMPLATE_COLUMNS = '1fr 16px 1fr';
const PAD = 16;
const DEBOUNCE_TIME = 100;
const R = {
tracking: false,
parent: null,
parentWidth: null,
leftCol: null,
leftColStartWidth: null,
screenX: null,
};
let resizeTimer;
let parents = [];
function setLeftColGridTemplate(el, width) {
el.style.gridTemplateColumns = `${width}px 16px 1fr`;
}
function displayResizeHandle(parent) {
if (window.innerWidth < GRADIO_MIN_WIDTH * 2 + PAD * 4) {
parent.style.display = 'flex';
if (R.handle != null) {
R.handle.style.opacity = '0';
}
return false;
} else {
parent.style.display = 'grid';
if (R.handle != null) {
R.handle.style.opacity = '100';
}
return true;
}
}
function afterResize(parent) {
if (displayResizeHandle(parent) && parent.style.gridTemplateColumns != GRID_TEMPLATE_COLUMNS) {
const oldParentWidth = R.parentWidth;
const newParentWidth = parent.offsetWidth;
const widthL = parseInt(parent.style.gridTemplateColumns.split(' ')[0]);
const ratio = newParentWidth / oldParentWidth;
const newWidthL = Math.max(Math.floor(ratio * widthL), GRADIO_MIN_WIDTH);
setLeftColGridTemplate(parent, newWidthL);
R.parentWidth = newParentWidth;
}
}
function setup(parent) {
const leftCol = parent.firstElementChild;
const rightCol = parent.lastElementChild;
parents.push(parent);
parent.style.display = 'grid';
parent.style.gap = '0';
parent.style.gridTemplateColumns = GRID_TEMPLATE_COLUMNS;
const resizeHandle = document.createElement('div');
resizeHandle.classList.add('resize-handle');
parent.insertBefore(resizeHandle, rightCol);
resizeHandle.addEventListener('mousedown', (evt) => {
if (evt.button !== 0) return;
evt.preventDefault();
evt.stopPropagation();
document.body.classList.add('resizing');
R.tracking = true;
R.parent = parent;
R.parentWidth = parent.offsetWidth;
R.handle = resizeHandle;
R.leftCol = leftCol;
R.leftColStartWidth = leftCol.offsetWidth;
R.screenX = evt.screenX;
});
resizeHandle.addEventListener('dblclick', (evt) => {
evt.preventDefault();
evt.stopPropagation();
parent.style.gridTemplateColumns = GRID_TEMPLATE_COLUMNS;
});
afterResize(parent);
}
window.addEventListener('mousemove', (evt) => {
if (evt.button !== 0) return;
if (R.tracking) {
evt.preventDefault();
evt.stopPropagation();
const delta = R.screenX - evt.screenX;
const leftColWidth = Math.max(Math.min(R.leftColStartWidth - delta, R.parent.offsetWidth - GRADIO_MIN_WIDTH - PAD), GRADIO_MIN_WIDTH);
setLeftColGridTemplate(R.parent, leftColWidth);
}
});
window.addEventListener('mouseup', (evt) => {
if (evt.button !== 0) return;
if (R.tracking) {
evt.preventDefault();
evt.stopPropagation();
R.tracking = false;
document.body.classList.remove('resizing');
}
});
window.addEventListener('resize', () => {
clearTimeout(resizeTimer);
resizeTimer = setTimeout(function() {
for (const parent of parents) {
afterResize(parent);
}
}, DEBOUNCE_TIME);
});
setupResizeHandle = setup;
})();
onUiLoaded(function() {
for (var elem of gradioApp().querySelectorAll('.resize-handle-row')) {
if (!elem.querySelector('.resize-handle')) {
setupResizeHandle(elem);
}
}
});
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