--- /dev/null
+/*!
+ Autosize v1.18.1 - 2013-11-05
+ Automatically adjust textarea height based on user input.
+ (c) 2013 Jack Moore - http://www.jacklmoore.com/autosize
+ license: http://www.opensource.org/licenses/mit-license.php
+*/
+(function ($) {
+ var
+ defaults = {
+ className: 'autosizejs',
+ append: '',
+ callback: false,
+ resizeDelay: 10
+ },
+
+ // border:0 is unnecessary, but avoids a bug in Firefox on OSX
+ copy = '<textarea tabindex="-1" style="position:absolute; top:-999px; left:0; right:auto; bottom:auto; border:0; padding: 0; -moz-box-sizing:content-box; -webkit-box-sizing:content-box; box-sizing:content-box; word-wrap:break-word; height:0 !important; min-height:0 !important; overflow:hidden; transition:none; -webkit-transition:none; -moz-transition:none;"/>',
+
+ // line-height is conditionally included because IE7/IE8/old Opera do not return the correct value.
+ typographyStyles = [
+ 'fontFamily',
+ 'fontSize',
+ 'fontWeight',
+ 'fontStyle',
+ 'letterSpacing',
+ 'textTransform',
+ 'wordSpacing',
+ 'textIndent'
+ ],
+
+ // to keep track which textarea is being mirrored when adjust() is called.
+ mirrored,
+
+ // the mirror element, which is used to calculate what size the mirrored element should be.
+ mirror = $(copy).data('autosize', true)[0];
+
+ // test that line-height can be accurately copied.
+ mirror.style.lineHeight = '99px';
+ if ($(mirror).css('lineHeight') === '99px') {
+ typographyStyles.push('lineHeight');
+ }
+ mirror.style.lineHeight = '';
+
+ $.fn.autosize = function (options) {
+ if (!this.length) {
+ return this;
+ }
+
+ options = $.extend({}, defaults, options || {});
+
+ if (mirror.parentNode !== document.body) {
+ $(document.body).append(mirror);
+ }
+
+ return this.each(function () {
+ var
+ ta = this,
+ $ta = $(ta),
+ maxHeight,
+ minHeight,
+ boxOffset = 0,
+ callback = $.isFunction(options.callback),
+ originalStyles = {
+ height: ta.style.height,
+ overflow: ta.style.overflow,
+ overflowY: ta.style.overflowY,
+ wordWrap: ta.style.wordWrap,
+ resize: ta.style.resize
+ },
+ timeout,
+ width = $ta.width();
+
+ if ($ta.data('autosize')) {
+ // exit if autosize has already been applied, or if the textarea is the mirror element.
+ return;
+ }
+ $ta.data('autosize', true);
+
+ if ($ta.css('box-sizing') === 'border-box' || $ta.css('-moz-box-sizing') === 'border-box' || $ta.css('-webkit-box-sizing') === 'border-box'){
+ boxOffset = $ta.outerHeight() - $ta.height();
+ }
+
+ // IE8 and lower return 'auto', which parses to NaN, if no min-height is set.
+ minHeight = Math.max(parseInt($ta.css('minHeight'), 10) - boxOffset || 0, $ta.height());
+
+ $ta.css({
+ overflow: 'hidden',
+ overflowY: 'hidden',
+ wordWrap: 'break-word', // horizontal overflow is hidden, so break-word is necessary for handling words longer than the textarea width
+ resize: ($ta.css('resize') === 'none' || $ta.css('resize') === 'vertical') ? 'none' : 'horizontal'
+ });
+
+ // The mirror width must exactly match the textarea width, so using getBoundingClientRect because it doesn't round the sub-pixel value.
+ function setWidth() {
+ var style, width;
+
+ if ('getComputedStyle' in window) {
+ style = window.getComputedStyle(ta, null);
+ width = ta.getBoundingClientRect().width;
+
+ $.each(['paddingLeft', 'paddingRight', 'borderLeftWidth', 'borderRightWidth'], function(i,val){
+ width -= parseInt(style[val],10);
+ });
+
+ mirror.style.width = width + 'px';
+ }
+ else {
+ // window.getComputedStyle, getBoundingClientRect returning a width are unsupported and unneeded in IE8 and lower.
+ mirror.style.width = Math.max($ta.width(), 0) + 'px';
+ }
+ }
+
+ function initMirror() {
+ var styles = {};
+
+ mirrored = ta;
+ mirror.className = options.className;
+ maxHeight = parseInt($ta.css('maxHeight'), 10);
+
+ // mirror is a duplicate textarea located off-screen that
+ // is automatically updated to contain the same text as the
+ // original textarea. mirror always has a height of 0.
+ // This gives a cross-browser supported way getting the actual
+ // height of the text, through the scrollTop property.
+ $.each(typographyStyles, function(i,val){
+ styles[val] = $ta.css(val);
+ });
+ $(mirror).css(styles);
+
+ setWidth();
+
+ // Chrome-specific fix:
+ // When the textarea y-overflow is hidden, Chrome doesn't reflow the text to account for the space
+ // made available by removing the scrollbar. This workaround triggers the reflow for Chrome.
+ if (window.chrome) {
+ var width = ta.style.width;
+ ta.style.width = '0px';
+ var ignore = ta.offsetWidth;
+ ta.style.width = width;
+ }
+ }
+
+ // Using mainly bare JS in this function because it is going
+ // to fire very often while typing, and needs to very efficient.
+ function adjust() {
+ var height, original;
+
+ if (mirrored !== ta) {
+ initMirror();
+ } else {
+ setWidth();
+ }
+
+ mirror.value = ta.value + options.append;
+ mirror.style.overflowY = ta.style.overflowY;
+ original = parseInt(ta.style.height,10);
+
+ // Setting scrollTop to zero is needed in IE8 and lower for the next step to be accurately applied
+ mirror.scrollTop = 0;
+
+ mirror.scrollTop = 9e4;
+
+ // Using scrollTop rather than scrollHeight because scrollHeight is non-standard and includes padding.
+ height = mirror.scrollTop;
+
+ if (maxHeight && height > maxHeight) {
+ ta.style.overflowY = 'scroll';
+ height = maxHeight;
+ } else {
+ ta.style.overflowY = 'hidden';
+ if (height < minHeight) {
+ height = minHeight;
+ }
+ }
+
+ height += boxOffset;
+
+ if (original !== height) {
+ ta.style.height = height + 'px';
+ if (callback) {
+ options.callback.call(ta,ta);
+ }
+ }
+ }
+
+ function resize () {
+ clearTimeout(timeout);
+ timeout = setTimeout(function(){
+ var newWidth = $ta.width();
+
+ if (newWidth !== width) {
+ width = newWidth;
+ adjust();
+ }
+ }, parseInt(options.resizeDelay,10));
+ }
+
+ if ('onpropertychange' in ta) {
+ if ('oninput' in ta) {
+ // Detects IE9. IE9 does not fire onpropertychange or oninput for deletions,
+ // so binding to onkeyup to catch most of those occasions. There is no way that I
+ // know of to detect something like 'cut' in IE9.
+ $ta.on('input.autosize keyup.autosize', adjust);
+ } else {
+ // IE7 / IE8
+ $ta.on('propertychange.autosize', function(){
+ if(event.propertyName === 'value'){
+ adjust();
+ }
+ });
+ }
+ } else {
+ // Modern Browsers
+ $ta.on('input.autosize', adjust);
+ }
+
+ // Set options.resizeDelay to false if using fixed-width textarea elements.
+ // Uses a timeout and width check to reduce the amount of times adjust needs to be called after window resize.
+
+ if (options.resizeDelay !== false) {
+ $(window).on('resize.autosize', resize);
+ }
+
+ // Event for manual triggering if needed.
+ // Should only be needed when the value of the textarea is changed through JavaScript rather than user input.
+ $ta.on('autosize.resize', adjust);
+
+ // Event for manual triggering that also forces the styles to update as well.
+ // Should only be needed if one of typography styles of the textarea change, and the textarea is already the target of the adjust method.
+ $ta.on('autosize.resizeIncludeStyle', function() {
+ mirrored = null;
+ adjust();
+ });
+
+ $ta.on('autosize.destroy', function(){
+ mirrored = null;
+ clearTimeout(timeout);
+ $(window).off('resize', resize);
+ $ta
+ .off('autosize')
+ .off('.autosize')
+ .css(originalStyles)
+ .removeData('autosize');
+ });
+
+ // Call adjust in case the textarea already contains text.
+ adjust();
+ });
+ };
+}(window.jQuery || window.$)); // jQuery or jQuery-like library, such as Zepto
\ No newline at end of file
git://git.iain.cx/iain / readifood.git / commitdiff