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- // Thanks to https://github.com/andreypopp/react-textarea-autosize/
- /**
- * calculateNodeHeight(uiTextNode, useCache = false)
- */
- var HIDDEN_TEXTAREA_STYLE = "\n min-height:0 !important;\n max-height:none !important;\n height:0 !important;\n visibility:hidden !important;\n overflow:hidden !important;\n position:absolute !important;\n z-index:-1000 !important;\n top:0 !important;\n right:0 !important;\n pointer-events: none !important;\n";
- var SIZING_STYLE = ['letter-spacing', 'line-height', 'padding-top', 'padding-bottom', 'font-family', 'font-weight', 'font-size', 'font-variant', 'text-rendering', 'text-transform', 'width', 'text-indent', 'padding-left', 'padding-right', 'border-width', 'box-sizing', 'word-break', 'white-space'];
- var computedStyleCache = {};
- var hiddenTextarea;
- export function calculateNodeStyling(node) {
- var useCache = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;
- var nodeRef = node.getAttribute('id') || node.getAttribute('data-reactid') || node.getAttribute('name');
- if (useCache && computedStyleCache[nodeRef]) {
- return computedStyleCache[nodeRef];
- }
- var style = window.getComputedStyle(node);
- var boxSizing = style.getPropertyValue('box-sizing') || style.getPropertyValue('-moz-box-sizing') || style.getPropertyValue('-webkit-box-sizing');
- var paddingSize = parseFloat(style.getPropertyValue('padding-bottom')) + parseFloat(style.getPropertyValue('padding-top'));
- var borderSize = parseFloat(style.getPropertyValue('border-bottom-width')) + parseFloat(style.getPropertyValue('border-top-width'));
- var sizingStyle = SIZING_STYLE.map(function (name) {
- return "".concat(name, ":").concat(style.getPropertyValue(name));
- }).join(';');
- var nodeInfo = {
- sizingStyle: sizingStyle,
- paddingSize: paddingSize,
- borderSize: borderSize,
- boxSizing: boxSizing
- };
- if (useCache && nodeRef) {
- computedStyleCache[nodeRef] = nodeInfo;
- }
- return nodeInfo;
- }
- export default function calculateAutoSizeStyle(uiTextNode) {
- var useCache = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;
- var minRows = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;
- var maxRows = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null;
- if (!hiddenTextarea) {
- hiddenTextarea = document.createElement('textarea');
- hiddenTextarea.setAttribute('tab-index', '-1');
- hiddenTextarea.setAttribute('aria-hidden', 'true');
- // fix: A form field element should have an id or name attribute
- // A form field element has neither an id nor a name attribute. This might prevent the browser from correctly autofilling the form.
- // https://developer.mozilla.org/en-US/docs/Web/HTML/Element/textarea
- hiddenTextarea.setAttribute('name', 'hiddenTextarea');
- document.body.appendChild(hiddenTextarea);
- }
- // Fix wrap="off" issue
- // https://github.com/ant-design/ant-design/issues/6577
- if (uiTextNode.getAttribute('wrap')) {
- hiddenTextarea.setAttribute('wrap', uiTextNode.getAttribute('wrap'));
- } else {
- hiddenTextarea.removeAttribute('wrap');
- }
- // Copy all CSS properties that have an impact on the height of the content in
- // the textbox
- var _calculateNodeStyling = calculateNodeStyling(uiTextNode, useCache),
- paddingSize = _calculateNodeStyling.paddingSize,
- borderSize = _calculateNodeStyling.borderSize,
- boxSizing = _calculateNodeStyling.boxSizing,
- sizingStyle = _calculateNodeStyling.sizingStyle;
- // Need to have the overflow attribute to hide the scrollbar otherwise
- // text-lines will not calculated properly as the shadow will technically be
- // narrower for content
- hiddenTextarea.setAttribute('style', "".concat(sizingStyle, ";").concat(HIDDEN_TEXTAREA_STYLE));
- hiddenTextarea.value = uiTextNode.value || uiTextNode.placeholder || '';
- var minHeight = undefined;
- var maxHeight = undefined;
- var overflowY;
- var height = hiddenTextarea.scrollHeight;
- if (boxSizing === 'border-box') {
- // border-box: add border, since height = content + padding + border
- height += borderSize;
- } else if (boxSizing === 'content-box') {
- // remove padding, since height = content
- height -= paddingSize;
- }
- if (minRows !== null || maxRows !== null) {
- // measure height of a textarea with a single row
- hiddenTextarea.value = ' ';
- var singleRowHeight = hiddenTextarea.scrollHeight - paddingSize;
- if (minRows !== null) {
- minHeight = singleRowHeight * minRows;
- if (boxSizing === 'border-box') {
- minHeight = minHeight + paddingSize + borderSize;
- }
- height = Math.max(minHeight, height);
- }
- if (maxRows !== null) {
- maxHeight = singleRowHeight * maxRows;
- if (boxSizing === 'border-box') {
- maxHeight = maxHeight + paddingSize + borderSize;
- }
- overflowY = height > maxHeight ? '' : 'hidden';
- height = Math.min(maxHeight, height);
- }
- }
- var style = {
- height: height,
- overflowY: overflowY,
- resize: 'none'
- };
- if (minHeight) {
- style.minHeight = minHeight;
- }
- if (maxHeight) {
- style.maxHeight = maxHeight;
- }
- return style;
- }
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