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@@ -0,0 +1,274 @@
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+(function (global, factory) {
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+ typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
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+ typeof define === 'function' && define.amd ? define(factory) :
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+ (global = global || self, global.autosize = factory());
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+}(this, (function () {
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+ var map = typeof Map === "function" ? new Map() : function () {
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+ var keys = [];
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+ var values = [];
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+ return {
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+ has: function has(key) {
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+ return keys.indexOf(key) > -1;
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+ },
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+ get: function get(key) {
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+ return values[keys.indexOf(key)];
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+ },
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+ set: function set(key, value) {
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+ if (keys.indexOf(key) === -1) {
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+ keys.push(key);
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+ values.push(value);
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+ }
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+ },
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+ "delete": function _delete(key) {
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+ var index = keys.indexOf(key);
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+
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+ if (index > -1) {
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+ keys.splice(index, 1);
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+ values.splice(index, 1);
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+ }
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+ }
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+ };
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+ }();
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+
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+ var createEvent = function createEvent(name) {
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+ return new Event(name, {
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+ bubbles: true
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+ });
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+ };
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+
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+ try {
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+ new Event('test');
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+ } catch (e) {
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+ // IE does not support `new Event()`
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+ createEvent = function createEvent(name) {
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+ var evt = document.createEvent('Event');
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+ evt.initEvent(name, true, false);
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+ return evt;
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+ };
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+ }
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+
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+ function assign(ta) {
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+ if (!ta || !ta.nodeName || ta.nodeName !== 'TEXTAREA' || map.has(ta)) return;
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+ var heightOffset = null;
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+ var clientWidth = null;
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+ var cachedHeight = null;
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+
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+ function init() {
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+ var style = window.getComputedStyle(ta, null);
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+
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+ if (style.resize === 'vertical') {
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+ ta.style.resize = 'none';
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+ } else if (style.resize === 'both') {
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+ ta.style.resize = 'horizontal';
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+ }
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+
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+ if (style.boxSizing === 'content-box') {
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+ heightOffset = -(parseFloat(style.paddingTop) + parseFloat(style.paddingBottom));
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+ } else {
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+ heightOffset = parseFloat(style.borderTopWidth) + parseFloat(style.borderBottomWidth);
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+ } // Fix when a textarea is not on document body and heightOffset is Not a Number
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+
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+
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+ if (isNaN(heightOffset)) {
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+ heightOffset = 0;
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+ }
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+
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+ update();
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+ }
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+
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+ function changeOverflow(value) {
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+ {
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+ // Chrome/Safari-specific fix:
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+ // When the textarea y-overflow is hidden, Chrome/Safari do not reflow the text to account for the space
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+ // made available by removing the scrollbar. The following forces the necessary text reflow.
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+ var width = ta.style.width;
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+ ta.style.width = '0px'; // Force reflow:
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+ /* jshint ignore:end */
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+
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+ ta.style.width = width;
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+ }
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+ ta.style.overflowY = value;
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+ }
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+
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+ function getParentOverflows(el) {
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+ var arr = [];
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+
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+ while (el && el.parentNode && el.parentNode instanceof Element) {
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+ if (el.parentNode.scrollTop) {
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+ arr.push({
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+ node: el.parentNode,
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+ scrollTop: el.parentNode.scrollTop
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+ });
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+ }
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+
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+ el = el.parentNode;
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+ }
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+
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+ return arr;
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+ }
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+
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+ function resize() {
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+ if (ta.scrollHeight === 0) {
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+ // If the scrollHeight is 0, then the element probably has display:none or is detached from the DOM.
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+ return;
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+ }
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+
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+ var overflows = getParentOverflows(ta);
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+ var docTop = document.documentElement && document.documentElement.scrollTop; // Needed for Mobile IE (ticket #240)
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+
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+ ta.style.height = '';
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+ ta.style.height = ta.scrollHeight + heightOffset + 'px'; // used to check if an update is actually necessary on window.resize
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+
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+ clientWidth = ta.clientWidth; // prevents scroll-position jumping
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+
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+ overflows.forEach(function (el) {
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+ el.node.scrollTop = el.scrollTop;
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+ });
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+
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+ if (docTop) {
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+ document.documentElement.scrollTop = docTop;
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+ }
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+ }
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+
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+ function update() {
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+ resize();
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+ var styleHeight = Math.round(parseFloat(ta.style.height));
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+ var computed = window.getComputedStyle(ta, null); // Using offsetHeight as a replacement for computed.height in IE, because IE does not account use of border-box
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+
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+ var actualHeight = computed.boxSizing === 'content-box' ? Math.round(parseFloat(computed.height)) : ta.offsetHeight; // The actual height not matching the style height (set via the resize method) indicates that
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+ // the max-height has been exceeded, in which case the overflow should be allowed.
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+
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+ if (actualHeight < styleHeight) {
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+ if (computed.overflowY === 'hidden') {
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+ changeOverflow('scroll');
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+ resize();
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+ actualHeight = computed.boxSizing === 'content-box' ? Math.round(parseFloat(window.getComputedStyle(ta, null).height)) : ta.offsetHeight;
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+ }
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+ } else {
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+ // Normally keep overflow set to hidden, to avoid flash of scrollbar as the textarea expands.
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+ if (computed.overflowY !== 'hidden') {
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+ changeOverflow('hidden');
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+ resize();
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+ actualHeight = computed.boxSizing === 'content-box' ? Math.round(parseFloat(window.getComputedStyle(ta, null).height)) : ta.offsetHeight;
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+ }
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+ }
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+
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+ if (cachedHeight !== actualHeight) {
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+ cachedHeight = actualHeight;
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+ var evt = createEvent('autosize:resized');
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+
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+ try {
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+ ta.dispatchEvent(evt);
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+ } catch (err) {// Firefox will throw an error on dispatchEvent for a detached element
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+ // https://bugzilla.mozilla.org/show_bug.cgi?id=889376
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+ }
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+ }
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+ }
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+
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+ var pageResize = function pageResize() {
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+ if (ta.clientWidth !== clientWidth) {
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+ update();
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+ }
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+ };
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+
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+ var destroy = function (style) {
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+ window.removeEventListener('resize', pageResize, false);
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+ ta.removeEventListener('input', update, false);
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+ ta.removeEventListener('keyup', update, false);
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+ ta.removeEventListener('autosize:destroy', destroy, false);
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+ ta.removeEventListener('autosize:update', update, false);
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+ Object.keys(style).forEach(function (key) {
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+ ta.style[key] = style[key];
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+ });
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+ map["delete"](ta);
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+ }.bind(ta, {
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+ height: ta.style.height,
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+ resize: ta.style.resize,
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+ overflowY: ta.style.overflowY,
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+ overflowX: ta.style.overflowX,
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+ wordWrap: ta.style.wordWrap
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+ });
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+
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+ ta.addEventListener('autosize:destroy', destroy, false); // IE9 does not fire onpropertychange or oninput for deletions,
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+ // so binding to onkeyup to catch most of those events.
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+ // There is no way that I know of to detect something like 'cut' in IE9.
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+
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+ if ('onpropertychange' in ta && 'oninput' in ta) {
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+ ta.addEventListener('keyup', update, false);
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+ }
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+
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+ window.addEventListener('resize', pageResize, false);
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+ ta.addEventListener('input', update, false);
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+ ta.addEventListener('autosize:update', update, false);
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+ ta.style.overflowX = 'hidden';
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+ ta.style.wordWrap = 'break-word';
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+ map.set(ta, {
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+ destroy: destroy,
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+ update: update
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+ });
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+ init();
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+ }
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+
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+ function destroy(ta) {
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+ var methods = map.get(ta);
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+
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+ if (methods) {
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+ methods.destroy();
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+ }
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+ }
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+
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+ function update(ta) {
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+ var methods = map.get(ta);
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+
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+ if (methods) {
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+ methods.update();
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+ }
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+ }
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+
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+ var autosize = null; // Do nothing in Node.js environment and IE8 (or lower)
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+
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+ if (typeof window === 'undefined' || typeof window.getComputedStyle !== 'function') {
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+ autosize = function autosize(el) {
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+ return el;
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+ };
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+
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+ autosize.destroy = function (el) {
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+ return el;
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+ };
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+
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+ autosize.update = function (el) {
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+ return el;
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+ };
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+ } else {
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+ autosize = function autosize(el, options) {
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+ if (el) {
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+ Array.prototype.forEach.call(el.length ? el : [el], function (x) {
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+ return assign(x);
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+ });
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+ }
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+
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+ return el;
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+ };
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+
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+ autosize.destroy = function (el) {
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+ if (el) {
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+ Array.prototype.forEach.call(el.length ? el : [el], destroy);
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+ }
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+
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+ return el;
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+ };
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+
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+ autosize.update = function (el) {
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+ if (el) {
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+ Array.prototype.forEach.call(el.length ? el : [el], update);
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+ }
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+
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+ return el;
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+ };
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+ }
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+
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+ var autosize$1 = autosize;
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+
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+ return autosize$1;
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+
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+})));
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Lauri Ojansivu
