/*
Copyright (c) 2003-2010, CKSource - Frederico Knabben. All rights reserved.
For licensing, see LICENSE.html or http://ckeditor.com/license
*/

CKEDITOR.dialog.add( 'specialchar', function( editor )
{
	/**
	 * Simulate "this" of a dialog for non-dialog events.
	 * @type {CKEDITOR.dialog}
	 */
	var dialog,
		lang = editor.lang.specialChar;

	var insertSpecialChar = function ( specialChar )
	{
		var selection = editor.getSelection(),
			ranges	  = selection.getRanges(),
			range, textNode;

		editor.fire( 'saveSnapshot' );

		for ( var i = 0, len = ranges.length ; i < len ; i++ )
		{
			range = ranges[ i ];
			range.deleteContents();

			textNode =  CKEDITOR.dom.element.createFromHtml( specialChar );
			range.insertNode( textNode );
		}

		range.moveToPosition( textNode, CKEDITOR.POSITION_AFTER_END );
		range.select();

		editor.fire( 'saveSnapshot' );
	};

	var onChoice = function( evt )
	{
		var target, value;
		if ( evt.data )
			target = evt.data.getTarget();
		else
			target = new CKEDITOR.dom.element( evt );

		if ( target.getName() == 'a' && ( value = target.getChild( 0 ).getHtml() ) )
		{
			target.removeClass( "cke_light_background" );
			dialog.hide();

			// Firefox has bug on insert chars into a element use its own API. (#5170)
			if ( CKEDITOR.env.gecko )
				insertSpecialChar( value );
			else
				editor.insertHtml( value );
		}
	};

	var onClick = CKEDITOR.tools.addFunction( onChoice );

	var focusedNode;

	var onFocus = function( evt, target )
	{
		var value;
		target = target || evt.data.getTarget();

		if ( target.getName() == 'span' )
			target = target.getParent();

		if ( target.getName() == 'a' && ( value = target.getChild( 0 ).getHtml() ) )
		{
			// Trigger blur manually if there is focused node.
			if ( focusedNode )
				onBlur( null, focusedNode );

			var htmlPreview = dialog.getContentElement( 'info', 'htmlPreview' ).getElement();

			dialog.getContentElement( 'info', 'charPreview' ).getElement().setHtml( value );
			htmlPreview.setHtml( CKEDITOR.tools.htmlEncode( value ) );
			target.getParent().addClass( "cke_light_background" );

			// Memorize focused node.
			focusedNode = target;
		}
	};

	var onBlur = function( evt, target )
	{
		target = target || evt.data.getTarget();

		if ( target.getName() == 'span' )
			target = target.getParent();

		if ( target.getName() == 'a' )
		{
			dialog.getContentElement( 'info', 'charPreview' ).getElement().setHtml( '&nbsp;' );
			dialog.getContentElement( 'info', 'htmlPreview' ).getElement().setHtml( '&nbsp;' );
			target.getParent().removeClass( "cke_light_background" );

			focusedNode = undefined;
		}
	};

	var onKeydown = CKEDITOR.tools.addFunction( function( ev )
	{
		ev = new CKEDITOR.dom.event( ev );

		// Get an Anchor element.
		var element = ev.getTarget();
		var relative, nodeToMove;
		var keystroke = ev.getKeystroke();
		var rtl = editor.lang.dir == 'rtl';

		switch ( keystroke )
		{
			// UP-ARROW
			case 38 :
				// relative is TR
				if ( ( relative = element.getParent().getParent().getPrevious() ) )
				{
					nodeToMove = relative.getChild( [element.getParent().getIndex(), 0] );
					nodeToMove.focus();
					onBlur( null, element );
					onFocus( null, nodeToMove );
				}
				ev.preventDefault();
				break;
			// DOWN-ARROW
			case 40 :
				// relative is TR
				if ( ( relative = element.getParent().getParent().getNext() ) )
				{
					nodeToMove = relative.getChild( [ element.getParent().getIndex(), 0 ] );
					if ( nodeToMove && nodeToMove.type == 1 )
					{
						nodeToMove.focus();
						onBlur( null, element );
						onFocus( null, nodeToMove );
					}
				}
				ev.preventDefault();
				break;
			// SPACE
			// ENTER is already handled as onClick
			case 32 :
				onChoice( { data: ev } );
				ev.preventDefault();
				break;

			// RIGHT-ARROW
			case rtl ? 37 : 39 :
			// TAB
			case 9 :
				// relative is TD
				if ( ( relative = element.getParent().getNext() ) )
				{
					nodeToMove = relative.getChild( 0 );
					if ( nodeToMove.type == 1 )
					{
						nodeToMove.focus();
						onBlur( null, element );
						onFocus( null, nodeToMove );
						ev.preventDefault( true );
					}
					else
						onBlur( null, element );
				}
				// relative is TR
				else if ( ( relative = element.getParent().getParent().getNext() ) )
				{
					nodeToMove = relative.getChild( [ 0, 0 ] );
					if ( nodeToMove && nodeToMove.type == 1 )
					{
						nodeToMove.focus();
						onBlur( null, element );
						onFocus( null, nodeToMove );
						ev.preventDefault( true );
					}
					else
						onBlur( null, element );
				}
				break;

			// LEFT-ARROW
			case rtl ? 39 : 37 :
			// SHIFT + TAB
			case CKEDITOR.SHIFT + 9 :
				// relative is TD
				if ( ( relative = element.getParent().getPrevious() ) )
				{
					nodeToMove = relative.getChild( 0 );
					nodeToMove.focus();
					onBlur( null, element );
					onFocus( null, nodeToMove );
					ev.preventDefault( true );
				}
				// relative is TR
				else if ( ( relative = element.getParent().getParent().getPrevious() ) )
				{
					nodeToMove = relative.getLast().getChild( 0 );
					nodeToMove.focus();
					onBlur( null, element );
					onFocus( null, nodeToMove );
					ev.preventDefault( true );
				}
				else
					onBlur( null, element );
				break;
			default :
				// Do not stop not handled events.
				return;
		}
	});

	return {
		title : lang.title,
		minWidth : 430,
		minHeight : 280,
		buttons : [ CKEDITOR.dialog.cancelButton ],
		charColumns : 17,
		chars :
			[
				'!','&quot;','#','$','%','&amp;',"'",'(',')','*','+','-','.','/',
				'0','1','2','3','4','5','6','7','8','9',':',';',
				'&lt;','=','&gt;','?','@',
				'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O',
				'P','Q','R','S','T','U','V','W','X','Y','Z',
				'[',']','^','_','`',
				'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p',
				'q','r','s','t','u','v','w','x','y','z',
				'{','|','}','~','&euro;(EURO SIGN)','&lsquo;(LEFT SINGLE QUOTATION MARK)','&rsquo;(RIGHT SINGLE QUOTATION MARK)','&ldquo;(LEFT DOUBLE QUOTATION MARK)',
				'&rdquo;(RIGHT DOUBLE QUOTATION MARK)','&ndash;(EN DASH)','&mdash;(EM DASH)','&iexcl;(INVERTED EXCLAMATION MARK)','&cent;(CENT SIGN)','&pound;(POUND SIGN)',
				'&curren;(CURRENCY SIGN)','&yen;(YEN SIGN)','&brvbar;(BROKEN BAR)','&sect;(SECTION SIGN)','&uml;(DIAERESIS)','&copy;(COPYRIGHT SIGN)','&ordf;(FEMININE ORDINAL INDICATOR)',
				'&laquo;(LEFT-POINTING DOUBLE ANGLE QUOTATION MARK)','&not;(NOT SIGN)','&reg;(REGISTERED SIGN)','&macr;(MACRON)','&deg;(DEGREE SIGN)','&plusmn;(PLUS-MINUS SIGN)','&sup2;(SUPERSCRIPT TWO)',
				'&sup3;(SUPERSCRIPT THREE)','&acute;(ACUTE ACCENT)','&micro;(MICRO SIGN)','&para;(PILCROW SIGN)','&middot;(MIDDLE DOT)','&cedil;(CEDILLA)',
				'&sup1;(SUPERSCRIPT ONE)','&ordm;(MASCULINE ORDINAL INDICATOR)','&raquo;(RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK)','&frac14;(VULGAR FRACTION ONE QUARTER)','&frac12;(VULGAR FRACTION ONE HALF)','&frac34;(VULGAR FRACTION THREE QUARTERS)',
				'&iquest;(INVERTED QUESTION MARK)','&Agrave;(LATIN CAPITAL LETTER A WITH GRAVE)','&Aacute;(LATIN CAPITAL LETTER A WITH ACUTE)','&Acirc;(LATIN CAPITAL LETTER A WITH CIRCUMFLEX)','&Atilde;(LATIN CAPITAL LETTER A WITH TILDE)','&Auml;(LATIN CAPITAL LETTER A WITH DIAERESIS)',
				'&Aring;(LATIN CAPITAL LETTER A WITH RING ABOVE)','&AElig;(LATIN CAPITAL LETTER AE)','&Ccedil;(LATIN CAPITAL LETTER C WITH CEDILLA)','&Egrave;(LATIN CAPITAL LETTER E WITH GRAVE)','&Eacute;(LATIN CAPITAL LETTER E WITH ACUTE)','&Ecirc;(LATIN CAPITAL LETTER E WITH CIRCUMFLEX)',
				'&Euml;(LATIN CAPITAL LETTER E WITH DIAERESIS)','&Igrave;(LATIN CAPITAL LETTER I WITH GRAVE)','&Iacute;(LATIN CAPITAL LETTER I WITH ACUTE)','&Icirc;(LATIN CAPITAL LETTER I WITH CIRCUMFLEX)','&Iuml;(LATIN CAPITAL LETTER I WITH DIAERESIS)','&ETH;(LATIN CAPITAL LETTER ETH)',
				'&Ntilde;(LATIN CAPITAL LETTER N WITH TILDE)','&Ograve;(LATIN CAPITAL LETTER O WITH GRAVE)','&Oacute;(LATIN CAPITAL LETTER O WITH ACUTE)','&Ocirc;(LATIN CAPITAL LETTER O WITH CIRCUMFLEX)','&Otilde;(LATIN CAPITAL LETTER O WITH TILDE)','&Ouml;(LATIN CAPITAL LETTER O WITH DIAERESIS)',
				'&times;(MULTIPLICATION SIGN)','&Oslash;(LATIN CAPITAL LETTER O WITH STROKE)','&Ugrave;(LATIN CAPITAL LETTER U WITH GRAVE)','&Uacute;(LATIN CAPITAL LETTER U WITH ACUTE)','&Ucirc;(LATIN CAPITAL LETTER U WITH CIRCUMFLEX)','&Uuml;(LATIN CAPITAL LETTER U WITH DIAERESIS)',
				'&Yacute;(LATIN CAPITAL LETTER Y WITH ACUTE)','&THORN;(LATIN CAPITAL LETTER THORN)','&szlig;(LATIN SMALL LETTER SHARP S)','&agrave;(LATIN SMALL LETTER A WITH GRAVE)','&aacute;(LATIN SMALL LETTER A WITH ACUTE)','&acirc;(LATIN SMALL LETTER A WITH CIRCUMFLEX)',
				'&atilde;(LATIN SMALL LETTER A WITH TILDE)','&auml;(LATIN SMALL LETTER A WITH DIAERESIS)','&aring;(LATIN SMALL LETTER A WITH RING ABOVE)','&aelig;(LATIN SMALL LETTER AE)','&ccedil;(LATIN SMALL LETTER C WITH CEDILLA)','&egrave;(LATIN SMALL LETTER E WITH GRAVE)',
				'&eacute;(LATIN SMALL LETTER E WITH ACUTE)','&ecirc;(LATIN SMALL LETTER E WITH CIRCUMFLEX)','&euml;(LATIN SMALL LETTER E WITH DIAERESIS)','&igrave;(LATIN SMALL LETTER I WITH GRAVE)','&iacute;(LATIN SMALL LETTER I WITH ACUTE)','&icirc;(LATIN SMALL LETTER I WITH CIRCUMFLEX)',
				'&iuml;(LATIN SMALL LETTER I WITH DIAERESIS)','&eth;(LATIN SMALL LETTER ETH)','&ntilde;(LATIN SMALL LETTER N WITH TILDE)','&ograve;(LATIN SMALL LETTER O WITH GRAVE)','&oacute;(LATIN SMALL LETTER O WITH ACUTE)','&ocirc;(LATIN SMALL LETTER O WITH CIRCUMFLEX)',
				'&otilde;(LATIN SMALL LETTER O WITH TILDE)','&ouml;(LATIN SMALL LETTER O WITH DIAERESIS)',
				'&divide;(DIVISION SIGN)','&oslash;(LATIN SMALL LETTER O WITH STROKE)',
				'&ugrave;(LATIN SMALL LETTER U WITH GRAVE)','&uacute;(LATIN SMALL LETTER U WITH ACUTE)',
				'&ucirc;(LATIN SMALL LETTER U WITH CIRCUMFLEX)','&uuml;(LATIN SMALL LETTER U WITH DIAERESIS)',
				'&uuml;(LATIN SMALL LETTER U WITH DIAERESIS)','&yacute;(LATIN SMALL LETTER Y WITH ACUTE)','&thorn;(LATIN SMALL LETTER THORN)','&yuml;(LATIN SMALL LETTER Y WITH DIAERESIS)',
				'&OElig;(LATIN CAPITAL LIGATURE OE)',
				'&oelig;(LATIN SMALL LIGATURE OE)','&#372;(LATIN CAPITAL LETTER W WITH CIRCUMFLEX)',
				'&#374(LATIN CAPITAL LETTER Y WITH CIRCUMFLEX)','&#373(LATIN SMALL LETTER W WITH CIRCUMFLEX)',
				'&#375;(LATIN SMALL LETTER Y WITH CIRCUMFLEX)','&sbquo;(SINGLE LOW-9 QUOTATION MARK)',
				'&#8219;(SINGLE HIGH-REVERSED-9 QUOTATION MARK)','&bdquo;(DOUBLE LOW-9 QUOTATION MARK)','&hellip;(HORIZONTAL ELLIPSIS)',
				'&trade;(TRADE MARK SIGN)','&#9658;(BLACK RIGHT-POINTING POINTER)','&bull;(BULLET)',
				'&rarr;(RIGHTWARDS ARROW)','&rArr;(RIGHTWARDS DOUBLE ARROW)','&hArr;(LEFT RIGHT DOUBLE ARROW)','&diams;(BLACK DIAMOND SUIT)','&asymp;(ALMOST EQUAL TO)'
			],
		onLoad :  function()
		{
			var columns = this.definition.charColumns,
				chars = this.definition.chars;

			var html = [ '<table role="listbox" aria-labelledby="specialchar_table_label"' +
						 			' style="width: 320px; height: 100%; border-collapse: separate;"' +
						 			' align="center" cellspacing="2" cellpadding="2" border="0">' ];

			var i = 0,
				size = chars.length,
				character,
				charDesc;

			while ( i < size )
			{
				html.push( '<tr>' ) ;

				for ( var j = 0 ; j < columns ; j++, i++ )
				{
					if ( ( character = chars[ i ] ) )
					{
						charDesc = '';
						character = character.replace( /\((.*?)\)/, function( match, desc )
							{
								charDesc = desc;
								return '';
							} );

						// Use character in case description unavailable.
						charDesc = charDesc || character;

						html.push(
							'<td class="cke_dark_background" style="cursor: default" role="presentation">' +
							'<a href="javascript: void(0);" role="option"' +
							' aria-posinset="' + ( i +1 ) + '"',
							' aria-setsize="' + size + '"',
							' aria-labelledby="cke_specialchar_label_' + i + '"',
							' style="cursor: inherit; display: block; height: 1.25em; margin-top: 0.25em; text-align: center;" title="', CKEDITOR.tools.htmlEncode( charDesc ), '"' +
							' onkeydown="CKEDITOR.tools.callFunction( ' + onKeydown + ', event, this )"' +
							' onclick="CKEDITOR.tools.callFunction(' + onClick + ', this); return false;"' +
							' tabindex="-1">' +
							'<span style="margin: 0 auto;cursor: inherit">' +
							character +
							'</span>' +
							'<span class="cke_voice_label" id="cke_specialchar_label_' + i + '">' +
							charDesc +
							'</span></a>');
					}
					else
						html.push( '<td class="cke_dark_background">&nbsp;' );

					html.push( '</td>' );
				}
				html.push( '</tr>' );
			}

			html.push( '</tbody></table>', '<span id="specialchar_table_label" class="cke_voice_label">' + lang.options +'</span>' );

			this.getContentElement( 'info', 'charContainer' ).getElement().setHtml( html.join( '' ) );
		},
		contents : [
			{
				id : 'info',
				label : editor.lang.common.generalTab,
				title : editor.lang.common.generalTab,
				padding : 0,
				align : 'top',
				elements : [
					{
						type : 'hbox',
						align : 'top',
						widths : [ '320px', '90px' ],
						children :
						[
							{
								type : 'html',
								id : 'charContainer',
								html : '',
								onMouseover : onFocus,
								onMouseout : onBlur,
								focus : function()
								{
									var firstChar = this.getElement().getElementsByTag( 'a' ).getItem( 0 );
									setTimeout(function()
									{
										firstChar.focus();
										onFocus( null, firstChar );
									});
								},
								onShow : function()
								{
									var firstChar = this.getElement().getChild( [ 0, 0, 0, 0, 0 ] );
									setTimeout( function()
										{
											firstChar.focus();
											onFocus( null, firstChar );
										});
								},
								onLoad : function( event )
								{
									dialog = event.sender;
								}
							},
							{
								type : 'hbox',
								align : 'top',
								widths : [ '100%' ],
								children :
								[
									{
										type : 'vbox',
										align : 'top',
										children :
										[
											{
												type : 'html',
												html : '<div></div>'
											},
											{
												type : 'html',
												id : 'charPreview',
												className : 'cke_dark_background',
												style : 'border:1px solid #eeeeee;font-size:28px;height:40px;width:70px;padding-top:9px;font-family:\'Microsoft Sans Serif\',Arial,Helvetica,Verdana;text-align:center;',
												html : '<div>&nbsp;</div>'
											},
											{
												type : 'html',
												id : 'htmlPreview',
												className : 'cke_dark_background',
												style : 'border:1px solid #eeeeee;font-size:14px;height:20px;width:70px;padding-top:2px;font-family:\'Microsoft Sans Serif\',Arial,Helvetica,Verdana;text-align:center;',
												html : '<div>&nbsp;</div>'
											}
										]
									}
								]
							}
						]
					}
				]
			}
		]
	};
} );