/ajax/libs/jQuery.dotdotdot/1.6.16/jquery.dotdotdot.js

/*

 *	jQuery dotdotdot 1.6.16

 *

 *	Copyright (c) Fred Heusschen

 *	www.frebsite.nl

 *

 *	Plugin website:

 *	dotdotdot.frebsite.nl

 *

 *	Dual licensed under the MIT and GPL licenses.

 *	http://en.wikipedia.org/wiki/MIT_License

 *	http://en.wikipedia.org/wiki/GNU_General_Public_License

 */



(function( $, undef )

{

	if ( $.fn.dotdotdot )

	{

		return;

	}



	$.fn.dotdotdot = function( o )

	{

		if ( this.length == 0 )

		{

			$.fn.dotdotdot.debug( 'No element found for "' + this.selector + '".' );

			return this;

		}

		if ( this.length > 1 )

		{

			return this.each(

				function()

				{

					$(this).dotdotdot( o );

				}

			);

		}





		var $dot = this;



		if ( $dot.data( 'dotdotdot' ) )

		{

			$dot.trigger( 'destroy.dot' );

		}



		$dot.data( 'dotdotdot-style', $dot.attr( 'style' ) || '' );

		$dot.css( 'word-wrap', 'break-word' );

		if ($dot.css( 'white-space' ) === 'nowrap')

		{

			$dot.css( 'white-space', 'normal' );

		}



		$dot.bind_events = function()

		{

			$dot.bind(

				'update.dot',

				function( e, c )

				{

					e.preventDefault();

					e.stopPropagation();



					opts.maxHeight = ( typeof opts.height == 'number' )

						? opts.height

						: getTrueInnerHeight( $dot );



					opts.maxHeight += opts.tolerance;



					if ( typeof c != 'undefined' )

					{

						if ( typeof c == 'string' || c instanceof HTMLElement )

						{

					 		c = $('<div />').append( c ).contents();

						}

						if ( c instanceof $ )

						{

							orgContent = c;

						}

					}



					$inr = $dot.wrapInner( '<div class="dotdotdot" />' ).children();

					$inr.contents()

						.detach()

						.end()

						.append( orgContent.clone( true ) )

						.find( 'br' )

						.replaceWith( '  <br />  ' )

						.end()

						.css({

							'height'	: 'auto',

							'width'		: 'auto',

							'border'	: 'none',

							'padding'	: 0,

							'margin'	: 0

						});



					var after = false,

						trunc = false;



					if ( conf.afterElement )

					{

						after = conf.afterElement.clone( true );

					    after.show();

						conf.afterElement.detach();

					}



					if ( test( $inr, opts ) )

					{

						if ( opts.wrap == 'children' )

						{

							trunc = children( $inr, opts, after );

						}

						else

						{

							trunc = ellipsis( $inr, $dot, $inr, opts, after );

						}

					}

					$inr.replaceWith( $inr.contents() );

					$inr = null;



					if ( $.isFunction( opts.callback ) )

					{

						opts.callback.call( $dot[ 0 ], trunc, orgContent );

					}



					conf.isTruncated = trunc;

					return trunc;

				}



			).bind(

				'isTruncated.dot',

				function( e, fn )

				{

					e.preventDefault();

					e.stopPropagation();



					if ( typeof fn == 'function' )

					{

						fn.call( $dot[ 0 ], conf.isTruncated );

					}

					return conf.isTruncated;

				}



			).bind(

				'originalContent.dot',

				function( e, fn )

				{

					e.preventDefault();

					e.stopPropagation();



					if ( typeof fn == 'function' )

					{

						fn.call( $dot[ 0 ], orgContent );

					}

					return orgContent;

				}



			).bind(

				'destroy.dot',

				function( e )

				{

					e.preventDefault();

					e.stopPropagation();



					$dot.unwatch()

						.unbind_events()

						.contents()

						.detach()

						.end()

						.append( orgContent )

						.attr( 'style', $dot.data( 'dotdotdot-style' ) || '' )

						.data( 'dotdotdot', false );

				}

			);

			return $dot;

		};	//	/bind_events



		$dot.unbind_events = function()

		{

			$dot.unbind('.dot');

			return $dot;

		};	//	/unbind_events



		$dot.watch = function()

		{

			$dot.unwatch();

			if ( opts.watch == 'window' )

			{

				var $window = $(window),

					_wWidth = $window.width(),

					_wHeight = $window.height();



				$window.bind(

					'resize.dot' + conf.dotId,

					function()

					{

						if ( _wWidth != $window.width() || _wHeight != $window.height() || !opts.windowResizeFix )

						{

							_wWidth = $window.width();

							_wHeight = $window.height();



							if ( watchInt )

							{

								clearInterval( watchInt );

							}

							watchInt = setTimeout(

								function()

								{

									$dot.trigger( 'update.dot' );

								}, 100

							);

						}

					}

				);

			}

			else

			{

				watchOrg = getSizes( $dot );

				watchInt = setInterval(

					function()

					{

						if ( $dot.is( ':visible' ) )

						{

							var watchNew = getSizes( $dot );

							if ( watchOrg.width  != watchNew.width ||

								 watchOrg.height != watchNew.height )

							{

								$dot.trigger( 'update.dot' );

								watchOrg = watchNew;

							}

						}

					}, 500

				);

			}

			return $dot;

		};

		$dot.unwatch = function()

		{

			$(window).unbind( 'resize.dot' + conf.dotId );

			if ( watchInt )

			{

				clearInterval( watchInt );

			}

			return $dot;

		};



		var	orgContent	= $dot.contents(),

			opts 		= $.extend( true, {}, $.fn.dotdotdot.defaults, o ),

			conf		= {},

			watchOrg	= {},

			watchInt	= null,

			$inr		= null;





		if ( !( opts.lastCharacter.remove instanceof Array ) )

		{

			opts.lastCharacter.remove = $.fn.dotdotdot.defaultArrays.lastCharacter.remove;

		}

		if ( !( opts.lastCharacter.noEllipsis instanceof Array ) )

		{

			opts.lastCharacter.noEllipsis = $.fn.dotdotdot.defaultArrays.lastCharacter.noEllipsis;

		}





		conf.afterElement	= getElement( opts.after, $dot );

		conf.isTruncated	= false;

		conf.dotId			= dotId++;





		$dot.data( 'dotdotdot', true )

			.bind_events()

			.trigger( 'update.dot' );



		if ( opts.watch )

		{

			$dot.watch();

		}



		return $dot;

	};





	//	public

	$.fn.dotdotdot.defaults = {

		'ellipsis'			: '... ',

		'wrap'				: 'word',

		'fallbackToLetter'	: true,

		'lastCharacter'		: {},

		'tolerance'			: 0,

		'callback'			: null,

		'after'				: null,

		'height'			: null,

		'watch'				: false,

		'windowResizeFix'	: true

	};

	$.fn.dotdotdot.defaultArrays = {

		'lastCharacter'		: {

			'remove'			: [ ' ', '\u3000', ',', ';', '.', '!', '?' ],

			'noEllipsis'		: []

		}

	};

	$.fn.dotdotdot.debug = function( msg ) {};





	//	private

	var dotId = 1;



	function children( $elem, o, after )

	{

		var $elements 	= $elem.children(),

			isTruncated	= false;



		$elem.empty();



		for ( var a = 0, l = $elements.length; a < l; a++ )

		{

			var $e = $elements.eq( a );

			$elem.append( $e );

			if ( after )

			{

				$elem.append( after );

			}

			if ( test( $elem, o ) )

			{

				$e.remove();

				isTruncated = true;

				break;

			}

			else

			{

				if ( after )

				{

					after.detach();

				}

			}

		}

		return isTruncated;

	}

	function ellipsis( $elem, $d, $i, o, after )

	{

		var isTruncated	= false;



		//	Don't put the ellipsis directly inside these elements

		var notx = 'table, thead, tbody, tfoot, tr, col, colgroup, object, embed, param, ol, ul, dl, blockquote, select, optgroup, option, textarea, script, style';



		//	Don't remove these elements even if they are after the ellipsis

		var noty = 'script, .dotdotdot-keep';



		$elem

			.contents()

			.detach()

			.each(

				function()

				{



					var e	= this,

						$e	= $(e);



					if ( typeof e == 'undefined' || ( e.nodeType == 3 && $.trim( e.data ).length == 0 ) )

					{

						return true;

					}

					else if ( $e.is( noty ) )

					{

						$elem.append( $e );

					}

					else if ( isTruncated )

					{

						return true;

					}

					else

					{

						$elem.append( $e );

						if ( after )

						{

							$elem[ $elem.is( notx ) ? 'after' : 'append' ]( after );

						}

						if ( test( $i, o ) )

						{

							if ( e.nodeType == 3 ) // node is TEXT

							{

								isTruncated = ellipsisElement( $e, $d, $i, o, after );

							}

							else

							{

								isTruncated = ellipsis( $e, $d, $i, o, after );

							}



							if ( !isTruncated )

							{

								$e.detach();

								isTruncated = true;

							}

						}



						if ( !isTruncated )

						{

							if ( after )

							{

								after.detach();

							}

						}

					}

				}

			);



		return isTruncated;

	}

	function ellipsisElement( $e, $d, $i, o, after )

	{

		var e = $e[ 0 ];



		if ( !e )

		{

			return false;

		}



		var txt			= getTextContent( e ),

			space		= ( txt.indexOf(' ') !== -1 ) ? ' ' : '\u3000',

			separator	= ( o.wrap == 'letter' ) ? '' : space,

			textArr		= txt.split( separator ),

			position 	= -1,

			midPos		= -1,

			startPos	= 0,

			endPos		= textArr.length - 1;





		//	Only one word

		if ( o.fallbackToLetter && startPos == 0 && endPos == 0 )

		{

			separator	= '';

			textArr		= txt.split( separator );

			endPos		= textArr.length - 1;

		}



		while ( startPos <= endPos && !( startPos == 0 && endPos == 0 ) )

		{

			var m = Math.floor( ( startPos + endPos ) / 2 );

			if ( m == midPos )

			{

				break;

			}

			midPos = m;



			setTextContent( e, textArr.slice( 0, midPos + 1 ).join( separator ) + o.ellipsis );



			if ( !test( $i, o ) )

			{

				position = midPos;

				startPos = midPos;

			}

			else

			{

				endPos = midPos;



				//	Fallback to letter

				if (o.fallbackToLetter && startPos == 0 && endPos == 0 )

				{

					separator	= '';

					textArr		= textArr[ 0 ].split( separator );

					position	= -1;

					midPos		= -1;

					startPos	= 0;

					endPos		= textArr.length - 1;

				}

			}

		}



		if ( position != -1 && !( textArr.length == 1 && textArr[ 0 ].length == 0 ) )

		{

			txt = addEllipsis( textArr.slice( 0, position + 1 ).join( separator ), o );

			setTextContent( e, txt );

		}

		else

		{

			var $w = $e.parent();

			$e.detach();



			var afterLength = ( after && after.closest($w).length ) ? after.length : 0;



			if ( $w.contents().length > afterLength )

			{

				e = findLastTextNode( $w.contents().eq( -1 - afterLength ), $d );

			}

			else

			{

				e = findLastTextNode( $w, $d, true );

				if ( !afterLength )

				{

					$w.detach();

				}

			}

			if ( e )

			{

				txt = addEllipsis( getTextContent( e ), o );

				setTextContent( e, txt );

				if ( afterLength && after )

				{

					$(e).parent().append( after );

				}

			}

		}



		return true;

	}

	function test( $i, o )

	{

		return $i.innerHeight() > o.maxHeight;

	}

	function addEllipsis( txt, o )

	{

		while( $.inArray( txt.slice( -1 ), o.lastCharacter.remove ) > -1 )

		{

			txt = txt.slice( 0, -1 );

		}

		if ( $.inArray( txt.slice( -1 ), o.lastCharacter.noEllipsis ) < 0 )

		{

			txt += o.ellipsis;

		}

		return txt;

	}

	function getSizes( $d )

	{

		return {

			'width'	: $d.innerWidth(),

			'height': $d.innerHeight()

		};

	}

	function setTextContent( e, content )

	{

		if ( e.innerText )

		{

			e.innerText = content;

		}

		else if ( e.nodeValue )

		{

			e.nodeValue = content;

		}

		else if (e.textContent)

		{

			e.textContent = content;

		}



	}

	function getTextContent( e )

	{

		if ( e.innerText )

		{

			return e.innerText;

		}

		else if ( e.nodeValue )

		{

			return e.nodeValue;

		}

		else if ( e.textContent )

		{

			return e.textContent;

		}

		else

		{

			return "";

		}

	}

	function getPrevNode( n )

	{

		do

		{

			n = n.previousSibling;

		}

		while ( n && n.nodeType !== 1 && n.nodeType !== 3 );



		return n;

	}

	function findLastTextNode( $el, $top, excludeCurrent )

	{

		var e = $el && $el[ 0 ], p;

		if ( e )

		{

			if ( !excludeCurrent )

			{

				if ( e.nodeType === 3 )

				{

					return e;

				}

				if ( $.trim( $el.text() ) )

				{

					return findLastTextNode( $el.contents().last(), $top );

				}

			}

			p = getPrevNode( e );

			while ( !p )

			{

				$el = $el.parent();

				if ( $el.is( $top ) || !$el.length )

				{

					return false;

				}

				p = getPrevNode( $el[0] );

			}

			if ( p )

			{

				return findLastTextNode( $(p), $top );

			}

		}

		return false;

	}

	function getElement( e, $i )

	{

		if ( !e )

		{

			return false;

		}

		if ( typeof e === 'string' )

		{

			e = $(e, $i);

			return ( e.length )

				? e

				: false;

		}

		return !e.jquery

			? false

			: e;

	}

	function getTrueInnerHeight( $el )

	{

		var h = $el.innerHeight(),

			a = [ 'paddingTop', 'paddingBottom' ];



		for ( var z = 0, l = a.length; z < l; z++ )

		{

			var m = parseInt( $el.css( a[ z ] ), 10 );

			if ( isNaN( m ) )

			{

				m = 0;

			}

			h -= m;

		}

		return h;

	}





	//	override jQuery.html

	var _orgHtml = $.fn.html;

	$.fn.html = function( str )

	{

		if ( str != undef && !$.isFunction( str ) && this.data( 'dotdotdot' ) )

		{

			return this.trigger( 'update', [ str ] );

		}

		return _orgHtml.apply( this, arguments );

	};





	//	override jQuery.text

	var _orgText = $.fn.text;

	$.fn.text = function( str )

	{

		if ( str != undef && !$.isFunction( str ) && this.data( 'dotdotdot' ) )

		{

			str = $( '<div />' ).text( str ).html();

			return this.trigger( 'update', [ str ] );

		}

		return _orgText.apply( this, arguments );

	};





})( jQuery );