https://www.piteaif.se/libs/autosize.js?050d6e56eda31a3e450636f8212fa618

1/*!
2	Autosize 3.0.5
3	license: MIT
4	http://www.jacklmoore.com/autosize
5*/
6(function (global, factory) {
7	if (typeof define === 'function' && define.amd) {
8		define(['exports', 'module'], factory);
9	} else if (typeof exports !== 'undefined' && typeof module !== 'undefined') {
10		factory(exports, module);
11	} else {
12		var mod = {
13			exports: {}
14		};
15		factory(mod.exports, mod);
16		global.autosize = mod.exports;
17	}
18})(this, function (exports, module) {
19	'use strict';
20
21	function assign(ta) {
22		var _ref = arguments[1] === undefined ? {} : arguments[1];
23
24		var _ref$setOverflowX = _ref.setOverflowX;
25		var setOverflowX = _ref$setOverflowX === undefined ? true : _ref$setOverflowX;
26		var _ref$setOverflowY = _ref.setOverflowY;
27		var setOverflowY = _ref$setOverflowY === undefined ? true : _ref$setOverflowY;
28
29		if (!ta || !ta.nodeName || ta.nodeName !== 'TEXTAREA' || ta.hasAttribute('data-autosize-on')) return;
30
31		var heightOffset = null;
32		var overflowY = 'hidden';
33
34		function init() {
35			var style = window.getComputedStyle(ta, null);
36
37			if (style.resize === 'vertical') {
38				ta.style.resize = 'none';
39			} else if (style.resize === 'both') {
40				ta.style.resize = 'horizontal';
41			}
42
43			if (style.boxSizing === 'content-box') {
44				heightOffset = -(parseFloat(style.paddingTop) + parseFloat(style.paddingBottom));
45			} else {
46				heightOffset = parseFloat(style.borderTopWidth) + parseFloat(style.borderBottomWidth);
47			}
48
49			update();
50		}
51
52		function changeOverflow(value) {
53			{
54				// Chrome/Safari-specific fix:
55				// When the textarea y-overflow is hidden, Chrome/Safari do not reflow the text to account for the space
56				// made available by removing the scrollbar. The following forces the necessary text reflow.
57				var width = ta.style.width;
58				ta.style.width = '0px';
59				// Force reflow:
60				/* jshint ignore:start */
61				ta.offsetWidth;
62				/* jshint ignore:end */
63				ta.style.width = width;
64			}
65
66			overflowY = value;
67
68			if (setOverflowY) {
69				ta.style.overflowY = value;
70			}
71
72			update();
73		}
74
75		function update() {
76			var startHeight = ta.style.height;
77			var htmlTop = document.documentElement.scrollTop;
78			var bodyTop = document.body.scrollTop;
79			var originalHeight = ta.style.height;
80
81			ta.style.height = 'auto';
82
83			var endHeight = ta.scrollHeight + heightOffset;
84
85			if (ta.scrollHeight === 0) {
86				// If the scrollHeight is 0, then the element probably has display:none or is detached from the DOM.
87				ta.style.height = originalHeight;
88				return;
89			}
90
91			ta.style.height = endHeight + 'px';
92
93			// prevents scroll-position jumping
94			document.documentElement.scrollTop = htmlTop;
95			document.body.scrollTop = bodyTop;
96
97			var style = window.getComputedStyle(ta, null);
98
99			if (style.height !== ta.style.height) {
100				if (overflowY !== 'visible') {
101					changeOverflow('visible');
102					return;
103				}
104			} else {
105				if (overflowY !== 'hidden') {
106					changeOverflow('hidden');
107					return;
108				}
109			}
110
111			if (startHeight !== ta.style.height) {
112				var evt = document.createEvent('Event');
113				evt.initEvent('autosize:resized', true, false);
114				ta.dispatchEvent(evt);
115			}
116		}
117
118		var destroy = (function (style) {
119			window.removeEventListener('resize', update);
120			ta.removeEventListener('input', update);
121			ta.removeEventListener('keyup', update);
122			ta.removeAttribute('data-autosize-on');
123			ta.removeEventListener('autosize:destroy', destroy);
124
125			Object.keys(style).forEach(function (key) {
126				ta.style[key] = style[key];
127			});
128		}).bind(ta, {
129			height: ta.style.height,
130			resize: ta.style.resize,
131			overflowY: ta.style.overflowY,
132			overflowX: ta.style.overflowX,
133			wordWrap: ta.style.wordWrap });
134
135		ta.addEventListener('autosize:destroy', destroy);
136
137		// IE9 does not fire onpropertychange or oninput for deletions,
138		// so binding to onkeyup to catch most of those events.
139		// There is no way that I know of to detect something like 'cut' in IE9.
140		if ('onpropertychange' in ta && 'oninput' in ta) {
141			ta.addEventListener('keyup', update);
142		}
143
144		window.addEventListener('resize', update);
145		ta.addEventListener('input', update);
146		ta.addEventListener('autosize:update', update);
147		ta.setAttribute('data-autosize-on', true);
148
149		if (setOverflowY) {
150			ta.style.overflowY = 'hidden';
151		}
152		if (setOverflowX) {
153			ta.style.overflowX = 'hidden';
154			ta.style.wordWrap = 'break-word';
155		}
156
157		init();
158	}
159
160	function destroy(ta) {
161		if (!(ta && ta.nodeName && ta.nodeName === 'TEXTAREA')) return;
162		var evt = document.createEvent('Event');
163		evt.initEvent('autosize:destroy', true, false);
164		ta.dispatchEvent(evt);
165	}
166
167	function update(ta) {
168		if (!(ta && ta.nodeName && ta.nodeName === 'TEXTAREA')) return;
169		var evt = document.createEvent('Event');
170		evt.initEvent('autosize:update', true, false);
171		ta.dispatchEvent(evt);
172	}
173
174	var autosize = null;
175
176	// Do nothing in Node.js environment and IE8 (or lower)
177	if (typeof window === 'undefined' || typeof window.getComputedStyle !== 'function') {
178		autosize = function (el) {
179			return el;
180		};
181		autosize.destroy = function (el) {
182			return el;
183		};
184		autosize.update = function (el) {
185			return el;
186		};
187	} else {
188		autosize = function (el, options) {
189			if (el) {
190				Array.prototype.forEach.call(el.length ? el : [el], function (x) {
191					return assign(x, options);
192				});
193			}
194			return el;
195		};
196		autosize.destroy = function (el) {
197			if (el) {
198				Array.prototype.forEach.call(el.length ? el : [el], destroy);
199			}
200			return el;
201		};
202		autosize.update = function (el) {
203			if (el) {
204				Array.prototype.forEach.call(el.length ? el : [el], update);
205			}
206			return el;
207		};
208	}
209
210	module.exports = autosize;
211});