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PHP Cross Reference of vtigercrm-6.1.0 |
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1 // Autosize 1.13 - jQuery plugin for textareas 2 // (c) 2012 Jack Moore - jacklmoore.com 3 // license: www.opensource.org/licenses/mit-license.php 4 5 (function ($) { 6 var 7 defaults = { 8 className: 'autosizejs', 9 append: "", 10 callback: false 11 }, 12 hidden = 'hidden', 13 borderBox = 'border-box', 14 lineHeight = 'lineHeight', 15 copy = '<textarea tabindex="-1" style="position:absolute; top:-9999px; left:-9999px; right:auto; bottom:auto; -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;"/>', 16 // line-height is omitted because IE7/IE8 doesn't return the correct value. 17 copyStyle = [ 18 'fontFamily', 19 'fontSize', 20 'fontWeight', 21 'fontStyle', 22 'letterSpacing', 23 'textTransform', 24 'wordSpacing', 25 'textIndent' 26 ], 27 oninput = 'oninput', 28 onpropertychange = 'onpropertychange', 29 test = $(copy)[0]; 30 31 // For testing support in old FireFox 32 test.setAttribute(oninput, "return"); 33 34 if ($.isFunction(test[oninput]) || onpropertychange in test) { 35 36 // test that line-height can be accurately copied to avoid 37 // incorrect value reporting in old IE and old Opera 38 $(test).css(lineHeight, '99px'); 39 if ($(test).css(lineHeight) === '99px') { 40 copyStyle.push(lineHeight); 41 } 42 43 $.fn.autosize = function (options) { 44 options = $.extend({}, defaults, options || {}); 45 46 return this.each(function () { 47 var 48 ta = this, 49 $ta = $(ta), 50 mirror, 51 minHeight = $ta.height(), 52 maxHeight = parseInt($ta.css('maxHeight'), 10), 53 active, 54 i = copyStyle.length, 55 resize, 56 boxOffset = 0, 57 value = ta.value, 58 callback = $.isFunction(options.callback); 59 60 if ($ta.css('box-sizing') === borderBox || $ta.css('-moz-box-sizing') === borderBox || $ta.css('-webkit-box-sizing') === borderBox){ 61 boxOffset = $ta.outerHeight() - $ta.height(); 62 } 63 64 if ($ta.data('mirror') || $ta.data('ismirror')) { 65 // if autosize has already been applied, exit. 66 // if autosize is being applied to a mirror element, exit. 67 return; 68 } else { 69 mirror = $(copy).data('ismirror', true).addClass(options.className)[0]; 70 71 resize = $ta.css('resize') === 'none' ? 'none' : 'horizontal'; 72 73 $ta.data('mirror', $(mirror)).css({ 74 overflow: hidden, 75 overflowY: hidden, 76 wordWrap: 'break-word', 77 resize: resize 78 }); 79 } 80 81 // Opera returns '-1px' when max-height is set to 'none'. 82 maxHeight = maxHeight && maxHeight > 0 ? maxHeight : 9e4; 83 84 // Using mainly bare JS in this function because it is going 85 // to fire very often while typing, and needs to very efficient. 86 function adjust() { 87 var height, overflow, original; 88 89 // the active flag keeps IE from tripping all over itself. Otherwise 90 // actions in the adjust function will cause IE to call adjust again. 91 if (!active) { 92 active = true; 93 mirror.value = ta.value + options.append; 94 mirror.style.overflowY = ta.style.overflowY; 95 original = parseInt(ta.style.height,10); 96 97 // Update the width in case the original textarea width has changed 98 mirror.style.width = $ta.css('width'); 99 100 // Needed for IE to reliably return the correct scrollHeight 101 mirror.scrollTop = 0; 102 103 // Set a very high value for scrollTop to be sure the 104 // mirror is scrolled all the way to the bottom. 105 mirror.scrollTop = 9e4; 106 107 height = mirror.scrollTop; 108 overflow = hidden; 109 if (height > maxHeight) { 110 height = maxHeight; 111 overflow = 'scroll'; 112 } else if (height < minHeight) { 113 height = minHeight; 114 } 115 height += boxOffset; 116 ta.style.overflowY = overflow; 117 118 if (original !== height) { 119 ta.style.height = height + 'px'; 120 if (callback) { 121 options.callback.call(ta); 122 } 123 } 124 125 // This small timeout gives IE a chance to draw it's scrollbar 126 // before adjust can be run again (prevents an infinite loop). 127 setTimeout(function () { 128 active = false; 129 }, 1); 130 } 131 } 132 133 // mirror is a duplicate textarea located off-screen that 134 // is automatically updated to contain the same text as the 135 // original textarea. mirror always has a height of 0. 136 // This gives a cross-browser supported way getting the actual 137 // height of the text, through the scrollTop property. 138 while (i--) { 139 mirror.style[copyStyle[i]] = $ta.css(copyStyle[i]); 140 } 141 142 $('body').append(mirror); 143 144 if (onpropertychange in ta) { 145 if (oninput in ta) { 146 // Detects IE9. IE9 does not fire onpropertychange or oninput for deletions, 147 // so binding to onkeyup to catch most of those occassions. There is no way that I 148 // know of to detect something like 'cut' in IE9. 149 ta[oninput] = ta.onkeyup = adjust; 150 } else { 151 // IE7 / IE8 152 ta[onpropertychange] = adjust; 153 } 154 } else { 155 // Modern Browsers 156 ta[oninput] = adjust; 157 158 // The textarea overflow is now hidden. But Chrome doesn't reflow the text after the scrollbars are removed. 159 // This is a hack to get Chrome to reflow it's text. 160 ta.value = ''; 161 ta.value = value; 162 } 163 164 $(window).resize(adjust); 165 166 // Allow for manual triggering if needed. 167 $ta.bind('autosize', adjust); 168 169 // Call adjust in case the textarea already contains text. 170 adjust(); 171 }); 172 }; 173 } else { 174 // Makes no changes for older browsers (FireFox3- and Safari4-) 175 $.fn.autosize = function (callback) { 176 return this; 177 }; 178 } 179 180 }(jQuery));
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