'use strict';

Object.defineProperty(exports, "__esModule", {
    value: true
});
exports['default'] = calculateNodeHeight;
// 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';
var SIZING_STYLE = ['letter-spacing', 'line-height', 'padding-top', 'padding-bottom', 'font-family', 'font-weight', 'font-size', 'text-rendering', 'text-transform', 'width', 'text-indent', 'padding-left', 'padding-right', 'border-width', 'box-sizing'];
var computedStyleCache = {};
var hiddenTextarea = void 0;
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 name + ':' + style.getPropertyValue(name);
    }).join(';');
    var nodeInfo = {
        sizingStyle: sizingStyle,
        paddingSize: paddingSize,
        borderSize: borderSize,
        boxSizing: boxSizing
    };
    if (useCache && nodeRef) {
        computedStyleCache[nodeRef] = nodeInfo;
    }
    return nodeInfo;
}
function calculateNodeHeight(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');
        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', sizingStyle + ';' + HIDDEN_TEXTAREA_STYLE);
    hiddenTextarea.value = uiTextNode.value || uiTextNode.placeholder || '';
    var minHeight = -Infinity;
    var maxHeight = Infinity;
    var height = hiddenTextarea.scrollHeight;
    var overflowY = void 0;
    if (boxSizing === 'border-box') {
        // border-box: add border, since height = content + padding + border
        height = height + borderSize;
    } else if (boxSizing === 'content-box') {
        // remove padding, since height = content
        height = 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);
        }
    }
    // Remove scroll bar flash when autosize without maxRows
    if (!maxRows) {
        overflowY = 'hidden';
    }
    return { height: height, minHeight: minHeight, maxHeight: maxHeight, overflowY: overflowY };
}
module.exports = exports['default'];