Tests.
[redakcja.git] / src / redakcja / static / js / lib / jquery / jquery.elastic.js
index 24e16f4..b225300 100644 (file)
@@ -1,6 +1,162 @@
-(function(jQuery){jQuery.fn.extend({elastic:function(){var mimics=['paddingTop','paddingRight','paddingBottom','paddingLeft','fontSize','lineHeight','fontFamily','width','fontWeight'];return this.each(function(){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,i=0;if(maxheight<0){maxheight=Number.MAX_VALUE;}
-$twin.appendTo($textarea.parent());var i=mimics.length;while(i--){$twin.css(mimics[i].toString(),$textarea.css(mimics[i].toString()));}
-function setHeightAndOverflow(height,overflow){curratedHeight=Math.floor(parseInt(height,10));if($textarea.height()!=curratedHeight){$textarea.css({'height':curratedHeight+'px','overflow':overflow});}}
-function update(){var textareaContent=$textarea.val().replace(/&/g,'&amp;').replace(/  /g,'&nbsp;').replace(/<|>/g,'&gt;').replace(/\n/g,'<br />');var twinContent=$twin.html();if(textareaContent+'&nbsp;'!=twinContent){$twin.html(textareaContent+'&nbsp;');if(Math.abs($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');}}}}
-$textarea.css({'overflow':'hidden'});$textarea.keyup(function(){update();});$textarea.live('input paste',function(e){setTimeout(update,250);});update();});}});})(jQuery);
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+/**
+*      @name                                                   Elastic
+*      @descripton                                             Elastic is jQuery plugin that grow and shrink your textareas automatically
+*      @version                                                1.6.11
+*      @requires                                               jQuery 1.2.6+
+*
+*      @author                                                 Jan Jarfalk
+*      @author-email                                   jan.jarfalk@unwrongest.com
+*      @author-website                                 http://www.unwrongest.com
+*
+*      @licence                                                MIT License - http://www.opensource.org/licenses/mit-license.php
+*/
+
+(function($){ 
+       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,'&amp;').replace(/ {2}/g, '&nbsp;').replace(/<|>/g, '&gt;').replace(/\n/g, '<br />');
+                                       
+                                       // Compare curated content with curated twin.
+                                       var twinContent = $twin.html().replace(/<br>/ig,'<br />');
+                                       
+                                       if(forced || textareaContent+'&nbsp;' !== twinContent){
+                                       
+                                               // Add an extra white space so new rows are added when you are at the end of a row.
+                                               $twin.html(textareaContent+'&nbsp;');
+                                               
+                                               // Change textarea height if twin plus the height of one line differs more than 3 pixel from textarea height
+                                               if(Math.abs($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)
+                               jQuery(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);
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