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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,151 +1,162 @@ | ||
| /** | ||
| * @name Elastic | ||
| * @descripton Elastic is jQuery plugin that grow and shrink your textareas automatically | ||
| * @version 1.6.10 | ||
| * @requires jQuery 1.2.6+ | ||
| * | ||
| * @author Jan Jarfalk | ||
| * @author-email [email protected] | ||
| * @author-website http://www.unwrongest.com | ||
| * | ||
| * @licence MIT License - http://www.opensource.org/licenses/mit-license.php | ||
| */ | ||
|
|
||
| (function(jQuery) { | ||
| jQuery.fn.extend({ | ||
| elastic: function() { | ||
|
|
||
| // We will create a div clone of the textarea | ||
| // by copying these attributes from the textarea to the div. | ||
| var mimics = [ | ||
| 'paddingTop', | ||
| 'paddingRight', | ||
| 'paddingBottom', | ||
| 'paddingLeft', | ||
| 'marginTop', | ||
| 'marginRight', | ||
| 'marginBottom', | ||
| 'marginLeft', | ||
| 'fontSize', | ||
| 'lineHeight', | ||
| 'fontFamily', | ||
| 'width', | ||
| 'fontWeight', | ||
| 'border-top-width', | ||
| 'border-right-width', | ||
| 'border-bottom-width', | ||
| 'border-left-width', | ||
| 'borderTopStyle', | ||
| 'borderTopColor', | ||
| 'borderRightStyle', | ||
| 'borderRightColor', | ||
| 'borderBottomStyle', | ||
| 'borderBottomColor', | ||
| 'borderLeftStyle', | ||
| 'borderLeftColor', | ||
| 'box-sizing', | ||
| '-moz-box-sizing', | ||
| '-webkit-box-sizing' | ||
| ]; | ||
|
|
||
| return this.each(function() { | ||
|
|
||
| // Elastic only works on textareas | ||
| if (this.type !== 'textarea') { | ||
| return false; | ||
| } | ||
|
|
||
| var $textarea = jQuery(this), | ||
| $twin = jQuery('<div />').css({'position': 'absolute','display':'none','word-wrap':'break-word'}), | ||
| lineHeight = parseInt($textarea.css('line-height'), 10) || parseInt($textarea.css('font-size'), '10'), | ||
| minheight = parseInt($textarea.css('height'), 10) || lineHeight * 3, | ||
| maxheight = parseInt($textarea.css('max-height'), 10) || Number.MAX_VALUE, | ||
| goalheight = 0; | ||
|
|
||
| // Opera returns max-height of -1 if not set | ||
| if (maxheight < 0) { | ||
| maxheight = Number.MAX_VALUE; | ||
| } | ||
|
|
||
| // Append the twin to the DOM | ||
| // We are going to meassure the height of this, not the textarea. | ||
| $twin.appendTo($textarea.parent()); | ||
|
|
||
| // Copy the essential styles (mimics) from the textarea to the twin | ||
| var i = mimics.length; | ||
| while (i--) { | ||
|
|
||
| if (mimics[i].toString() === 'width' && $textarea.css(mimics[i].toString()) === '0px') { | ||
| setTwinWidth(); | ||
| } else { | ||
| $twin.css(mimics[i].toString(), $textarea.css(mimics[i].toString())); | ||
| } | ||
| } | ||
|
|
||
| update(true); | ||
|
|
||
| // Updates the width of the twin. (solution for textareas with widths in percent) | ||
| function setTwinWidth() { | ||
| curatedWidth = Math.floor(parseInt($textarea.width(), 10)); | ||
| if ($twin.width() !== curatedWidth) { | ||
| $twin.css({'width': curatedWidth + 'px'}); | ||
|
|
||
| // Update height of textarea | ||
| update(true); | ||
| } | ||
| } | ||
|
|
||
| // Sets a given height and overflow state on the textarea | ||
| function setHeightAndOverflow(height, overflow) { | ||
|
|
||
| var curratedHeight = Math.floor(parseInt(height, 10)); | ||
| if ($textarea.height() !== curratedHeight) { | ||
| $textarea.css({'height': curratedHeight + 'px','overflow':overflow}); | ||
|
|
||
| // Fire the custom event resize | ||
| $textarea.triggerHandler('resize'); | ||
|
|
||
| } | ||
| } | ||
|
|
||
| // This function will update the height of the textarea if necessary | ||
| function update(forced) { | ||
|
|
||
| // Get curated content from the textarea. | ||
| var textareaContent = $textarea.val().replace(/&/g, '&').replace(/ {2}/g, ' ').replace(/<|>/g, '>').replace(/\n/g, '<br />'); | ||
|
|
||
| // Compare curated content with curated twin. | ||
| var twinContent = $twin.html().replace(/<br>/ig, '<br />'); | ||
|
|
||
| if (forced || textareaContent + ' ' !== twinContent) { | ||
|
|
||
| // Add an extra white space so new rows are added when you are at the end of a row. | ||
| $twin.html(textareaContent + ' '); | ||
|
|
||
| // Change textarea height if twin plus the height of one line differs more than 3 pixel from textarea height | ||
| if (Math.abs($twin.outerHeight() + lineHeight - $textarea.outerHeight()) > 3) { | ||
|
|
||
| var goalheight = $twin.outerHeight(); | ||
| if (goalheight >= maxheight) { | ||
| setHeightAndOverflow(maxheight, 'auto'); | ||
| } else if (goalheight <= minheight) { | ||
| setHeightAndOverflow(minheight, 'hidden'); | ||
| } else { | ||
| setHeightAndOverflow(goalheight, 'hidden'); | ||
| } | ||
|
|
||
| } | ||
|
|
||
| } | ||
|
|
||
| } | ||
|
|
||
| // Update textarea size on keyup, change, cut and paste | ||
| $textarea.bind('input', update); | ||
| $textarea.bind('change', update); | ||
| $(window).bind('resize', setTwinWidth); | ||
| }); | ||
|
|
||
| } | ||
| }); | ||
| * @name Elastic | ||
| * @descripton Elastic is jQuery plugin that grow and shrink your textareas automatically | ||
| * @version 1.6.11 | ||
| * @requires jQuery 1.2.6+ | ||
| * | ||
| * @author Jan Jarfalk | ||
| * @author-email [email protected] | ||
| * @author-website http://www.unwrongest.com | ||
| * | ||
| * @licence MIT License - http://www.opensource.org/licenses/mit-license.php | ||
| */ | ||
|
|
||
| (function($){ | ||
| jQuery.fn.extend({ | ||
| elastic: function() { | ||
|
|
||
| // We will create a div clone of the textarea | ||
| // by copying these attributes from the textarea to the div. | ||
| var mimics = [ | ||
| 'paddingTop', | ||
| 'paddingRight', | ||
| 'paddingBottom', | ||
| 'paddingLeft', | ||
| 'fontSize', | ||
| 'lineHeight', | ||
| 'fontFamily', | ||
| 'width', | ||
| 'fontWeight', | ||
| 'border-top-width', | ||
| 'border-right-width', | ||
| 'border-bottom-width', | ||
| 'border-left-width', | ||
| 'borderTopStyle', | ||
| 'borderTopColor', | ||
| 'borderRightStyle', | ||
| 'borderRightColor', | ||
| 'borderBottomStyle', | ||
| 'borderBottomColor', | ||
| 'borderLeftStyle', | ||
| 'borderLeftColor' | ||
| ]; | ||
|
|
||
| return this.each( function() { | ||
|
|
||
| // Elastic only works on textareas | ||
| if ( this.type !== 'textarea' ) { | ||
| return false; | ||
| } | ||
|
|
||
| var $textarea = jQuery(this), | ||
| $twin = jQuery('<div />').css({ | ||
| 'position' : 'absolute', | ||
| 'display' : 'none', | ||
| 'word-wrap' : 'break-word', | ||
| 'white-space' :'pre-wrap' | ||
| }), | ||
| lineHeight = parseInt($textarea.css('line-height'),10) || parseInt($textarea.css('font-size'),'10'), | ||
| minheight = parseInt($textarea.css('height'),10) || lineHeight*3, | ||
| maxheight = parseInt($textarea.css('max-height'),10) || Number.MAX_VALUE, | ||
| goalheight = 0; | ||
|
|
||
| // Opera returns max-height of -1 if not set | ||
| if (maxheight < 0) { maxheight = Number.MAX_VALUE; } | ||
|
|
||
| // Append the twin to the DOM | ||
| // We are going to meassure the height of this, not the textarea. | ||
| $twin.appendTo($textarea.parent()); | ||
|
|
||
| // Copy the essential styles (mimics) from the textarea to the twin | ||
| var i = mimics.length; | ||
| while(i--){ | ||
| $twin.css(mimics[i].toString(),$textarea.css(mimics[i].toString())); | ||
| } | ||
|
|
||
| // Updates the width of the twin. (solution for textareas with widths in percent) | ||
| function setTwinWidth(){ | ||
| var curatedWidth = Math.floor(parseInt($textarea.width(),10)); | ||
| if($twin.width() !== curatedWidth){ | ||
| $twin.css({'width': curatedWidth + 'px'}); | ||
|
|
||
| // Update height of textarea | ||
| update(true); | ||
| } | ||
| } | ||
|
|
||
| // Sets a given height and overflow state on the textarea | ||
| function setHeightAndOverflow(height, overflow){ | ||
|
|
||
| var curratedHeight = Math.floor(parseInt(height,10)); | ||
| if($textarea.height() !== curratedHeight){ | ||
| $textarea.css({'height': curratedHeight + 'px','overflow':overflow}); | ||
| } | ||
| } | ||
|
|
||
| // This function will update the height of the textarea if necessary | ||
| function update(forced) { | ||
|
|
||
| // Get curated content from the textarea. | ||
| var textareaContent = $textarea.val().replace(/&/g,'&').replace(/ {2}/g, ' ').replace(/<|>/g, '>').replace(/\n/g, '<br />'); | ||
|
|
||
| // Compare curated content with curated twin. | ||
| var twinContent = $twin.html().replace(/<br>/ig,'<br />'); | ||
|
|
||
| if(forced || textareaContent+' ' !== twinContent){ | ||
|
|
||
| // Add an extra white space so new rows are added when you are at the end of a row. | ||
| $twin.html(textareaContent+' '); | ||
|
|
||
| // Change textarea height if twin plus the height of one line differs more than 3 pixel from textarea height | ||
| if(Math.abs($twin.height() + lineHeight - $textarea.height()) > 3){ | ||
|
|
||
| var goalheight = $twin.height()+lineHeight; | ||
| if(goalheight >= maxheight) { | ||
| setHeightAndOverflow(maxheight,'auto'); | ||
| } else if(goalheight <= minheight) { | ||
| setHeightAndOverflow(minheight,'hidden'); | ||
| } else { | ||
| setHeightAndOverflow(goalheight,'hidden'); | ||
| } | ||
|
|
||
| } | ||
|
|
||
| } | ||
|
|
||
| } | ||
|
|
||
| // Hide scrollbars | ||
| $textarea.css({'overflow':'hidden'}); | ||
|
|
||
| // Update textarea size on keyup, change, cut and paste | ||
| $textarea.bind('keyup change cut paste', function(){ | ||
| update(); | ||
| }); | ||
|
|
||
| // Update width of twin if browser or textarea is resized (solution for textareas with widths in percent) | ||
| $(window).bind('resize', setTwinWidth); | ||
| $textarea.bind('resize', setTwinWidth); | ||
| $textarea.bind('update', update); | ||
|
|
||
| // Compact textarea on blur | ||
| $textarea.bind('blur',function(){ | ||
| if($twin.height() < maxheight){ | ||
| if($twin.height() > minheight) { | ||
| $textarea.height($twin.height()); | ||
| } else { | ||
| $textarea.height(minheight); | ||
| } | ||
| } | ||
| }); | ||
|
|
||
| // And this line is to catch the browser paste event | ||
| $textarea.bind('input paste',function(e){ setTimeout( update, 250); }); | ||
|
|
||
| // Run update once when elastic is initialized | ||
| update(); | ||
|
|
||
| }); | ||
|
|
||
| } | ||
| }); | ||
| })(jQuery); |